Sensors and Control Systems (Electrical and Electronic Engineering) Lab Report

Sensors and Control Systems (Electrical and Electronic Engineering) - Lab Report Example Rotating a DC electric motor’s rotor like tacho generators will produce electricity and voice-coil speaker can also act as microphones. It consist of a nickel wire of 0.5-1 mm diameter kept stretched between the poles of a permanent magnet and having a small stylus rigidly attached to it at the mid-point. The wire is prestressed by twisting it, before being installed into the position. Two pick-up coils of fine wire are wound round the wire on either side of the mid-point. Any displacement of the stylus to one side or the other increases the torsion on the side and decreases it by an equal amount on the other side. This results in an increase of magnetic flux in one-half and a decrease in the other half. The corresponding induced emfs are in phase opposition and are processed by suitable networks as in the case of linear variable differential transformer. It is used as phonograph pick-up and is designed to have flat frequency response over 150 Hz- 15 kHz frequency range. Due to the nonlinearity and hysteresis in the performance, it is normally limited for use when time- varying torsions of small amplitude are to be measured. It was discovered in 1879 and belongs to one of the galvanomagnetic phenomena in which the interaction between the magnetic field and the moving electrical charges results in the development of forces that alter the motion of the charge. When an external magnetic field is applied to the current carrying hall element perpendicular to the current flow a Lorentz force acts on the current due to which a voltage called hall voltage is generated perpendicular to both the current and the magnetic field. This voltage is so small and needs amplification. If an electric current flows through a conductor in a magnetic field, the magnetic field exerts a transverse force on the moving charge carriers which tends to push them to one side of the

Malcolm X and Martin Luther King Jr Essay Example for Free

Malcolm X and Martin Luther King Jr Essay The PBS video, â€Å"Malcolm and the Civil Rights Movement† is important in showing the varying views of both Malcolm X and Martin Luther King Jr. The video makes it well evident that both men were striving for the same end result, which was â€Å"defeating white racism and empowering African Americans. However, as the video explains, while both men had the same destination in mind, they both sought different journeys to get there. Through an analysis of the PBS video, Martin Luther King Jr.’s â€Å"I Have a Dream† speech, and several passages from The Autobiography of Malcolm X, it can be concluded that while the two men wanted the same thing, they both had different views and beliefs; Malcolm X was angry, bitter and vengeful, while Martin Luther King Jr. was only concerned with fixing the issue at hand. Early in the PBS video, it is explained that while King wished to mend and strengthen a family bond that already existed, Malcolm X viewed himself and black Muslims as an outside party. This is evident through the public denial that Malcolm X was even an American due to his opposing view of the suggestion of â€Å"integration with white America.† (â€Å"Malcolm and the Civil Rights Movement†, The American Experience. PBS. Video Transcript) This belief that Malcolm X was completely angry and against white America is aided though a passage in his autobiography coming from page 292 of the fifteenth chapter. In the first provided passage of Malcom X’s autobiography, Malcolm X shows marked bitterness and hatred in his choice of words to describe the situation. This can best be attributed to the quoting of the his words saying â€Å"the antebellum white slavemaster even devilishly manipulated his own woman.† This phrasing by Malcolm X speaks volumes to how he views the relationship of the white male to the rest of society. Through the using of the word â€Å"devilishly† he is portraying his inner thoughts that the white man is evil and c orrupt in his judgments. Then by using the words and â€Å"manipulated† and â€Å"own†, Malcolm X is expressing his belief that the white man is power hungry and sees the world as a game for his bemusement and handling. Furthermore by saying â€Å"his own woman†, this would suggest that Malcolm X believes that the white slave owner sees himself the master of not only black men but also white females. (Malcolm X, p. 292) To the slave owner, everything but himself is property and assets to be owned and managed. The passage then goes on to explain that Malcolm X strongly holds a general stereotype of slave owners copulating with their slaves to be unquestioned fact about all slave owners. His remarks that the slave owner has conned his wife into letting him procreate with the slaves allows valuable insight into Malcolm X’s thoughts that white male is purely a trickster and untrustworthy. The final two paragraphs of the first passage provided from The Autobiography of Malcolm X offer perhaps the most profound description of Malcolm X’s beliefs surrounding the relationship between blacks and whites. Through the anecdote of the girl traveling all that way to try and make amends for something that not even herself has been proven guilty of showcases how impenetrable Malcolm X’s beliefs are. While the girl asks Malcolm X if he believes â€Å"there are good white people†, Malcolm X explains that only actions can change his thoughts. The girl then offers, â€Å"What can I do?† at which Malcolm X responds that there is nothing she can do (Malcolm X, p. 292). This effectively renders the argument that Malcolm X firmly believes that the previous and current disrespectful actions whites have shown blacks are unforgiving. This belief and anger strongly contradicts with the first part of Martin Luther King Jr.’s â€Å"I Have a Dream† spee ch. Martin Luther King Jr. begins his speech with a preface of â€Å"let us not wallow in the valley of despair,† which he uses to say that the past does not need to define the feelings of the future. King then addresses that by moving on from the past quarrels, brotherhood can be established and the nation’s creed of â€Å"all men are created equal† can be recognized (â€Å"Martin Luther King: I Have a Dream† 1963. Speech). Paralleling this theme of the past not defining the future, King speaks of the state of Mississippi’s current and previous mishaps and how it can change as long as the past is left in the past. In the second provided passage of Malcolm X’s autobiography, which is pages 250 and 251 of the fourteenth chapter, it becomes increasingly clear that Malcolm X does not believe that whites and blacks can live happily on the same level. He then makes a unique distinction between the words segregate and separate. Through a reference to Elijah Mohammed, Malcolm X explains that segregation implies that one side –blacks– are inferior to the other side, while separation suggests that both sides have mutually agreed to part ways and keep distance without one holding significant power or influence over the others. To round out the passage, Malcolm X makes an analogy to a mother and her child stating that unless the baby is separate at birth then both the mother and baby will ultimately die (Malcolm X, p. 250-1). Interestingly, in the third provided passage, which is also found in the fourteenth chapter on pages 260 and 261, Malcolm X makes an interesting comparison of the black people being pets of the white society. This shows that Malcolm X believes that blacks are being trained for the benefit of whites and even mentions the word â€Å"brainwashing† to describe how whites have affected blacks. This passage continues the thought from the second provided passage from earlier in the chapter that blacks should be given the chance to be their own people, away from the influence of white society (Malcolm X, p. 260-1). This analogy suggests that Malcolm X sees the black peoples as independent people that deserve the chance to grow and mature on their own terms. Differing strongly from Malcolm X is King’s speech which showcases his believe that separation is not needed and that he envisions both races coming together as a family. This is illustrated through the line â€Å"black boys and black girls will be able to join hands with little white boys and white girls as sister and brothers.† With reference to his reverend background, King makes a suggestion that religion can be a unifying factor for the two races and that â€Å"the Lord shall be revealed and all flesh shall see it together.† (â€Å"Martin Luther King: I Have a Dream†, 1963. Speech) This is in direct contrast to Malcolm X and his autobiography, which puts significant emphasis on his Muslim beliefs being in direct opposition to white society. With the religious tone set, King’s speech then continues to explain how the previous grievances and tragedies of yesterday can be removed for tomorrow beginning with the phrase â€Å"with this faith†. This explains that King was looking to mend fences while Malcolm X saw the situation as â€Å"us versus everyone† and that everyone was out to victimize them. Finishing his speech, King expands the current situation to encompass the hardships of all other situations in the United States. Through this, King is able to offer that uniting of the black and white races can be a foundation for freedom of all parties in the United States. This helps to explain the difference between the views King and Malcolm X most clearly. While Malcolm X believes that unless separation is achieved the two races will destroy each other, King believes that if the two races come together then great achievements and progress in freedom for all can be accomplished. The PBS video then explains that Malcolm X did not want the black Muslim people to viewed as â€Å"defenseless† and thus, he was opposed to a strategy of non-violence (â€Å"Malcolm and the Civil Rights Movement†, The American Experience. PBS. Video Transcript). Because of the differing views on violence, religion was brought into play and Malcolm X insinuated that King was following the white man’s religion and still being controlled by him. While physical violence was avoided by King’s strategy, so was verbal assault as King often avoided criticizing Malcolm X and his comments. The video then explains that Malcolm X’s unique position then became less dominant in his mind as he felt let down from Elijah Muhammad after the death of Ronald Stokes. At the same time Malcolm X was looking to cause physical pain to the other side, King was making legislative and social gains in his movement (â€Å"Malcolm and the Civil Rights Movement†, The American Experience. PBS. Video Transcript). This helps to explain that King largely wanted a fix to the problem, while Malcolm X wanted revenge. Through an analysis of the PBS video, Martin Luther King Jr.’s â€Å"I Have a Dream† speech, and several passages from The Autobiography of Malcolm X, it can be concluded that while the two men wanted the same thing, they both had different views and believes. Malcolm X can be concluded to be angry, bitter and vengeful, with no believe that the relationship between blacks and whites could be salvaged. While differing greatly, Martin Luther King Jr. can be said to be guided by faith, optimistic, future oriented and only concerned with fixing the issue at hand. Works Cited 1.King, Martin Luther. Dr. Martin Luther King: I Have a Dream. March on Washington for Jobs and Freedom. Lincoln Memorial, Washington D.C. 28 Aug. 1963. Speech. 2.Malcom and the Civil Rights Movement. The American Experience. PBS. 5 May 2005. Television. Transcript. 3.Malcolm X. Chapter 14. The Autobiography of Malcolm X: As Told by Alex Haley. Alex Haley. New York: Random House, 1964. 250-1, 260-1. Print. 4.Malcolm X. Chapter 15. The Autobiography of Malcolm X: As Told by Alex Haley. Alex Haley. New York: Random House, 1964. 292. Print.

Report on Long-term Financing Policy :: essays research papers

Work Teams: Dispute Resolution Abstract Can conflict among work teams or individual employees be avoided? This and other conflict resolution issues will be addressed in this paper along with a couple of hypothetical workplace disputes and the viable solutions that can be applied to resolve the conflict(s). Work Teams and Conflicts   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"The use of work teams has become a popular strategy for increasing productivity and worker flexibility in the United States. Seventy-eight percent of U.S. organizations report that at least some of their employees are organized into work teams. In those organizations that utilize teams, an average of 61% of all employees is members of teams† (Bishop, Scott, and Burroughs, 2000). â€Å"A team is a group of people who are interdependent with respect to information, resources, and skills and who seek to combine their efforts to achieve a common goal† (Thompson, Aranda, and Robbins 2000, p9).   Ã‚  Ã‚  Ã‚  Ã‚  In most cultures and most global organizations, individuals have been paired or grouped into teams that are required to work together towards the completion of set goals. Today’s employees come from diverse cultural backgrounds with diverse attitudes and values. This can be good in that it can provide an organization with new and innovative ideas for positive and profitable direction in a global economy that is dominated by many of the same types of businesses. However, when employees are placed in groups or work teams, conflict can, sometimes, arise. Types of Hypothetical Workplace Disputes   Ã‚  Ã‚  Ã‚  Ã‚   Conflict can be good or bad for an organization. It is good or functional when it causes a team to perform effectively. However, conflict can be bad for an organization when it causes a group or team to perform inefficient and ineffective work that keeps the team from achieving its desired goals and objectives in the specified timeframe. Some conflicts support the goals of the group and improve its performance; these are functional, constructive forms of conflicts. There are also conflicts that hinder group performance; these are dysfunctional or destructive forms (Robbins 2001, p262-263). What Causes Conflicts   Ã‚  Ã‚  Ã‚  Ã‚  Several factors can lead or contribute to the escalation of conflict among groups or teams in the workplace. Some factors include but are not limited to: communication barriers, lack of good interpersonal skills, and poor ethical behavior. Desired Outcomes   Ã‚  Ã‚  Ã‚  Ã‚  Ã¢â‚¬Å"Conflict is constructive when it improves the quality of decisions, stimulates creativity and innovation, encourages interest and curiosity among group members, provides the medium through which problems can be aired and tensions released, and fosters an environment of self-evaluation and improvement† (Robbins 2001, p269).

Written Rational of Negotiating with Learners

Written rational of negotiating with learners, understanding inclusive learning, how to integrate functional skills and how communication can be delivered to the learner Teaching is based on many different ideas which all come to gether to help create and deliver a session to a group of learners. It is important to understand how, communication, inclusive learning, functional skills and negotiating with learners can lead to effective learning.Planning teaching and sessions can enable all learners to have the same opportunities to learn equally and will help the teacher to achieve their learning objectives. Negotiating with learners Assessment should be used for teachers as well as learners Life long learning UK (2007) Assessment is a valuable tool for both Teachers and learners to assess how and whether learning has occurred, according to Scales (2008) The principle purpose of assessment is to help people to learn; it should not be about testing people to see at what point they will fail.It is a method of elevating learners to a higher level of learning Everett (2012) Initial assessment occurs at the beginning of the course or precourse to obtain information about the learner’s skills and knowlage to date. Formative assessment helps the teacher to see how learners are progressing before moving on to other topics. It includes the effectiveness of the teaching and learning-taking place. Summative assessment is carried out at the end of the module or the course to assess whether the learning objectives have been achieved this can be via an exam.Other Methods of assessment include the following, *Observation * Simulation * Project and assignment * Portfolio * Written questions (essays and short answers) * Verbal or oral questions * Professional * On going assessment * Questions and answers * Assignments * Debates and discussions Initial assessment should help agree goals between the learner and the teacher; it is god process to help ensure the learner feels supported and happy. Inclusive learningInclusive learning Is about recognising that each learner is if different and each learner will require different information or aids to help them learn, it is about understanding that no one learner should be excluded from any activities within any session. In terms of learning this is where the teacher can really empower their students. According to Petty (2009) Inclusion, diversity, entitlement, differentiation, ensuring equal opportunities and personalized learning require teachers to treat students as individuals.When planning sessions it is important that the teacher plans for inclusion, an effective way to do this is to make sure session plans are written beforehand and â€Å"includes methods that appeal to visual, auditory, and kinaesthetic learners† Wilson (2009) Sessions should follow a structured style, that includes a introduction, middle and end, it should also include lots of interaction between the teacher and the class, b ut also make sure there are lots of things to do such as quizzes, visuals (PowerPoint) and games.The teacher should also analyze the class as it progresses to make any needed changes but also make an effort to make sure everyone in the class feel included. â€Å"Support your less able learners and stretch the imagination of the gifted ones† Wilson (2009)The Use of different resources to help each learner get the most from the session is important, aim to be creative with your learners, if there is a lot of talking in a planned session create hand outs to aid visual learners to help them follow, a great way to invite kinaesthic learners to learn is to give them hand outs and ask them to fill in blank words as they go though the session, by making sure the session is varied and has lots to do ensures that the needs of VAK are being met.Great resource openers, fillers and closers include word searches, quizzes, and crosswords can be given to those learners who are quick to finis h or for those who need an alternative exercise. Communication Communication is a means of passing on information from one person to another; it can be verbal, non-verbal or written Gravells (2008) Communication is generally in one of three ways; 1. Written – this can be long hand, short hand, text, images 2. Verbal – spoken, direct face-to-face or indirect on the telephone 3.Non-verbal, also know as body language – dress, facial expression, Proximity, and touch. In any communication exchange, the teacher should ensure that what has been offered has been understood. Pausing to summarize the things that have been spoken and heard can do this, and by asking questions to get feedback from learners to make sure they have understood and comprehended the topic. The key with any communication understands the message, which is being conveyed which can be done via questions and answer sessions, quizzes, questionnaires, feedback sessions.For communication to be effective the teacher needs to understand the intrinsic barriers to effective communication these can include the following: * Jargon and specialist terminology – write specialist words or info On the board so learners understand * Level of language depends on age of the learner be mindful when Developing hand outs so learners understand * Language and accent- speak clearly and slowly * Noise background noise can be distracting, fans, computers outside Noise * Listening and writing some people can not write and listen at the Same time, time should be given for note taking Talking and listening- speed, timing and allow for thinking time Integrating functional skills Functional skills are an initiative that was devised by the government to standardize qualifications in English, maths, and ICT. Functional skills are also known, †¢ Basic skills †¢ Common skills †¢ Key skills †¢ Core skills However they are now known as functional skills and these refer to the mastery of English (lit and language), maths (numeracy) ICT (info technology) These are the skills that underpin all learning and without them learners will struggle to meet the needs and demands of their chosen qualification, work and life skills.Government 14-19 education and skills white paper employers have identified functional skills as vital skills to learning, and functional skills can be taught in any class setting. English/ Literacy – spelling competitions – Discussions – Presentations Maths – – real life skills – Calculations – Interpreting and presenting results ICT – finding and selecting information – Entering and developing information.Embedding functional skills means that English, maths and ICT are delivered within any session in a clear concise way with out the learner realising it is being taught. â€Å" Integrating functional skills into your teaching means that you will set activities which meet the literacy, or numeracy standards; they may or may not be in context. By incorporating functional skills into every activity they will become embedded† Wilson (2009) Integrating functional skills is essential for helping learners to achieve and succeed in the future.Learning should engage, motivate and enthuse each learner on an individual basis, this means the learners individual needs should be considered and language, literacy, and numeracy skill levels should be considered, teachers should make sure each learner is taught in a way that they feel engaged, respected, safe, secure, and valued. Teachers should seek to use communication strategies that are within the learner’s range of understanding to motivate them.Wilson (2009) suggests that teaching and learning strategies should vary according to how the teacher will engage and support the learners within the time allowed, by using a range of learning methods, materials and resources each learner will feel included and supporte d with in the learning environment. Reference page Life long leaning UK (1997) Inclusive learning approaches for literacy, language, numeracy and ICT Scales. P. (2008) life long learning sector. Wilson. L. (2009) Practical teaching, a guide to PTLLS and DTLLS,

Human Impact of Climate Change Essay

Climate change concerns to a statistically momentous deviation in either the mean state of the climate or in its variability, remaining for an extensive period (normally decades or longer) (What is climate change, 2001). Climate change is term that adverts to any major and long-term change in average weather in a specified region or whole Earth. Fundamentally important variability of average weather over longer time period can be depicted as climate change. Climate change is due to natural internal procedures or external pressures, or to relentless anthropogenic alterations in the composition of the atmosphere or in land utilization. Earlier in the beginnings of Earth’s history climate changes were normally induced by different vibrant processes on Earth but recently it is caused by human activities. This is the reason that in our everyday talks the term climate change refers to climate change caused by global warming. The most disposed signs of climate change are glaciers that are presently melting at rapid level which entails climate change has already began. This time, climate change is only due to the recent human activities and had resulted in global warming process. Today, Global warming has become synonym for climate change due to its role in climate change. Undue emission of injurious greenhouse gases into atmosphere is causing a raise in average temperature that in turn is affecting the climate on Earth (What is climate change, 2001). The use of fossil fuels as a dominant aspect is continuing to emit CO2 and other greenhouse gases into atmosphere that is causing even more grave effects to climate change. With the rise in temperature globally effects like severe changes in weather patterns, climbing sea levels and increasing frequency and intensity of extreme weather is been experienced. The world’ most susceptible areas are around Earth’s poles and Africa and these areas had already started experiencing momentous increase in average temperature. The depressing fact is that one can’t stop climate change and can only make attempt to adjust to it and not making it worse with its own activities. Our own activities induced global warming and at this time all of us are confronted with the climate change as our most prominent environmental challenge. Although, all of us are already aware of climate change but still lacking in our activities to stop further increase of greenhouse gases in the atmosphere. For dealing with this present environmental challenge, there is a need to work vigorously for a global agreement to control climate change and to take possible domestic actions to attain satisfying diminutions in our own contribution. Discussion Significance & Scope of the Issue The management of the severe environmental challenge is essential as otherwise it could direct us towards drastic results. Already climate change is responsible for 300,000 deaths a year in accordance to former UN secretary general Kofi Annan’s think tank, the Global Humanitarian Forum. The study generated by the Global Humanitarian Forum also claims that approximate 300 million people in a year are affected by the outcomes of climate change (The Human Impact of Climate Change, 2009). Climate change is not only an all-encompassing menace but it is also an arbitrary threat-multiplier. With the affects of climate change a number of vulnerable communities of this planet can get destroyed (2009 Forum-Human Impact of Climate Change, 2009). The devastating effects of our development and measures for national, regional and global security are not measurable presently, but slowly or gradually its affects will start appearing along with destruction. The different studies done in this field projects that the increasing severity of events, like flooding and storms due to climate change will be accountable for approximately 500,000 deaths a year by 2030. Currently climate change is stimulating losses of over $125bn a year that is greater than the last year total of world aid. Anticipations exhibit that by 2030, losses could be around $600bn a year. With this weather related disasters problems like hunger, disease, poverty and lost livelihoods can increase (The Human Impact of Climate Change, 2009). If within coming 25 years, emissions are not brought under control the 310 million more people will start suffering with unfavourable health consequences connected to temperature gains, 20 million more people will fall under poverty and 5 million more people will be expatriate by climate change (The Human Impact of Climate Change, 2009). These statistics regarding the effect of climate change demonstrates that in present this is most significant environmental challenge that the world is facing. This need to be managed as soon as possible for everyone as otherwise it could lead to pressurize food production, decrease sanitation, and block economic development and degradation of ecosystems. Specific causes of Climate Change Climate change is the result of both the natural and human factors, but from some past decades it is mainly due to the subsequent human factors: †¢The most prominent reason of climate change is releasing of greenhouse gases and aerosols into the atmosphere. From last two hundred and fifty years, the concentrations of greenhouse gases and carbon dioxide have increased due to the burning of fossil fuels for energy production. The more the countries are moving towards industrialization and development, the more they are affecting their environment, which is resulting in the climate change (Climate Change, n. d. ). †¢Another prominent reason of climate change is deforestation, which is related with agriculture and urban development and harvesting timber for fuel, construction and paper. When the ecosystems are altered and vegetation is either burned or took out, the carbon stored in them is relinquished to the atmosphere as carbon dioxide (What causes global climate change, 2005). †¢Sulphate Aerosols and Black Carbon are other two crucial instances of anthropogenic forcings. Current industrial activities have recently increased the concentration of sulphate aerosols and black carbon in the atmosphere that is making imperative effect on our climate in the form of drastic weather events. Critical Analysis & Evaluation of Environmental and Ecological Consequences Earlier, the Earth’s atmosphere was changed very little. The temperature and the equilibrium of heat-trapping greenhouse gases were appropriate for humans, animals and plants to stay alive but presently everyone is confronting problems in maintaining the balance due to increasing industrialization and development activities. For our own comfort of life and economic development, all of us are making increasing use of fossil fuels from heating our homes to creating energy. This is adding more and more greenhouse gases to the atmosphere that in turn is raising the warming potentiality of the natural greenhouse effect. This enhanced greenhouse effect is causing environmental and ecological concerns as it has the potency to warm the planet at a range that has never been went through in human history. This warming of the climate is resulting in more extreme weather patterns, chances for several ecosystems to adapt naturally are decreasing, sea levels are rising, glaciers are melting, ocean acidification is increasing and agricultural outputs are ailing resulting in hunger. All these consequences are related with the use of fossil fuels that is the significant reason for CO2 emissions. The use of fossil fuels in turn is closely linked to economic growth, lifestyle and our culture. In present every human being is contributing to the CO2 concentrations in the atmosphere (Climate Change, n. d. ). Though, the person’s lifestyle and culture determines the amount emitted by him. The more flourishing a country’s economy is the superior is its fossil fuel consumption, ensuing in higher greenhouse gas emissions. Success of Solutions’ Proposed & Applied Climate change is affecting the whole world. Number of developed and developing countries are working together to discover the solution of environmental challenge of climate change. From the time, this issues has emerged a number of efforts had been done some of which had attained success and some had failed. In June 1992, 154 countries signed the United Nations Framework Convention on Climate Change (UNFCC) that corresponded to alleviate the amount of greenhouse gases in the atmosphere at levels that would not cause destruction. In Kyoto, in December 1997, Japan, Canada and 160 other industrialized nations committed to cut down their greenhouse gas emissions, as component of an international agreement on climate change identified as the Kyoto Protocol. This eventually came into force throughout 2005. Till the time these efforts had not attained immense success but with these efforts modest emission reductions had been encountered from industrialised countries. Countries are trying to reduce their emissions as now they had become aware with its severe results. Conclusion With the detailed discussion it can be said that in present climate change is with us. A decade ago, it was only an assumption but currently the future is unveiling before our eyes. Canada is experiencing it in the form of vanishing Arctic ice and permafrost. Latin America and Southern Asia is seeing it in lethal storms and floods whereas Europeans are experiencing it in melting glaciers, forest fires and disastrous heat waves (Pearce, 2006). All these experiences of different countries disclose that the consideration regarding this environmental challenge is imperative as otherwise more and more countries of the world will start experiencing its effects. The present rastic change in the climate needs to be controlled for assuring an appropriate level of CO2 concentrations in the atmosphere as otherwise it could bring unpredictable changes in our environment and ecological system. For controlling this environmental challenge staying educated about climate change and supporting attempts to deliberate its progress are the things that everyone can do and should do. Our ef forts regarding the climate change could make our economy more internationally competitive by creating expansion and jobs while raising less waste, pollution and greenhouse gases.

Its a Mans World Essays

Its a Mans World Essays Its a Mans World Essay Its a Mans World Essay Where do women stand in a mans world? It is a mans world. Men are higher paid, have more options and are overall more noticed in the world than women. But this is not to say that women are left flailing away helplessly at the bottom of the gender food chain or hidden somewhere in the shadows or mans success, because many would argue those mens lives are greatly dependent on women. It is a well known fact that men in general have been known to achieve to a much higher standard than women in the financial world. The top 15 billionaires are all ale except for one female who inherited the money from her belated husband. While these men sit comfortably at one end of the spectrum, many women are located at the complete other end of the extremes occupied by unpaid work. Unpaid work is known to women all over the world from women collecting wood and walking kilometers to find water in Africa to cooking and cleaning in households Just like our own. However, because this type of work does not produce any financial profit alone it is often considered economically redundant and worthless. The truth is that this mind of work is essential for the workings of the rest of society and the existence of the paid work force itself. In 1999 unpaid work was calculated to be valued at 40 million dollars which was equivalent to 39% of the NZ gross domestic product and in 2006 a New Zealand survey showed that women are still more likely to do unpaid work than men. This type of work may be taken up time that could be used to do paid work, but it is this kind of work allows others to get out of the house and do paid work which is why mens financial success is greatly dependent on women.

Past-Tense Regular Verb Pronunciation Guide

Past-Tense Regular Verb Pronunciation Guide A language thats always changing and adding new words, English is a challenging one to learn, as it is full of quirks and exceptions. The construction of regular past-tense verbs, at least, is pretty straightforward. It is generally done by adding -d or -ed to the verb, and it doesnt change form based on the subject of the verb: I asked, he agreed, you accepted- the verbs in these instances all look alike, ending in -ed. What does differ between them, though, is the  pronunciation of the ending. For some verbs, its a voiceless sound like T, as in asked; in some, its a voiced sound of D, as in agreed; and in some, its pronounced like ID, as in accepted. The lists that follow are three groupings of regular past-tense verbs, based on their pronunciation of the ending.   Note:  When you are looking at sentences to find the verbs to change to past tense, be certain you have found the verbs.  Theyre the action words. Group A:  Voiceless Last Sound of the Infinitive If the infinitive of the verb has a voiceless sound at the end of it, such as p, k, s, ch, sh, f, x, or h, you pronounce the ed ending as a T. (Note the pronunciation in parentheses. Its the sound that determines the group that a word belongs to, not always the written letter. For example, even though dance ends with a -ce, its sound is that of an s, so its in this voiceless group.) Example: Ask, asked ask(T) -ed as â€Å"T† askedbakedbrushedcookedcrackedcrasheddanced (da:ns) tdresseddroppedescapedfinishedfixedguessedhelpedhikedhopedjokedjumpedkissedknockedlaughed (là ¦f) tlockedlookedmissedmixedpackedpassedpickedpressedpronouncedpushedrelaxedshoppedslippedsmokedstoppedtalkedtypedwalkedwashedwatchedworked Group B:  Voiced Last Sound of the Infinitive If the last sound in the  verb is a voiced one, such as in l, v, n, m, r, b, v, g, w, y, z, and vowel sounds, or diphthongs, then pronounce the -ed ending as D. (Note the pronunciation in parentheses. The sound determines the group that a word belongs to, not always the written letter. For example, even though advise ends with an -se, its sound is that of the voiced z sound, keeping that word in this voiced sound group.) Example:  Allow, allowed allow(D) -ed as â€Å"D† advised (ad’vaiz) dagreedallowedansweredappearedarrivedbelievedbelongedburnedcalledcarriedchangedcleanedclosedcoveredcrieddamageddescribeddieddriedearnedencouragedenjoyedenteredexplainedexploredfilledfollowedhappenedimaginedinterviewedjailedkilledlistenedlivedlovedmeasuredmovedopenedplannedplayedperformedpulledrainedrealizedrememberedrepairedsavedsharedshavedshowedsignedslammedstayedsnowedstudiedtraveledtriedturnedusedwelcomedwhisperedworriedyawned Group C:  T or D as the Last Sound of the Infinitive If the last sound in the infinitive verb is a t or d, pronounce the -ed ending as â€Å"ID.† Example:  Need, needed need(id) -ed as â€Å"ID† acceptedaffordedarrestedattendedcollectedcontactedcounteddecideddefendeddemandeddividedendedexpandedexpectedexportedfloodedgraduatedhatedhuntedincludedinventedinvitedlandedneededpaintedplantedpresentedpretendedprintedprotectedprovidedrentedrepeatedreportedrespectedrestedscoldedshoutedskatedstartedtreatedvisitedwaitedwantedwasted The past simple form is often confused with the present perfect. Review  present perfect versus past simple to  help you test your understanding of when to use the present perfect or past simple tense.

Where to Find Privacy and Quiet Time in College

Where to Find Privacy and Quiet Time in College As much fun as it is to always have such interesting and engaging people around you in college, even the most outgoing of students need some privacy from time to time. Unfortunately, finding privacy on a college campus can be more of a challenge than you might think. So just where can you go when you need a few moments (or even an hour or two) to escape from it all? Here Are Some Ideas 1. Rent a carrel in the library. At many larger schools (and even some smaller ones), students can rent a carrel in the library. The cost usually isnt too high, especially if you consider how much youll pay a month for a quiet place you can call your own. Carrels can be great because you can leave books in there and know that theres always a quiet place to study without being interrupted. 2. Head to a large athletic facility when its not in use. Consider checking out the football stadium, track, soccer fields, or another athletic facility when there isnt a game going on. A space you might traditionally associate with thousands of people can be blissfully quiet when no events are planned. Finding a little nook for yourself in the stands can be a great way to get some time to just sit and reflect or even catch up on your long-overdue reading. 3. Cozy up in a  large theater facility when theres nobody there. Even if there is no play or dance performance scheduled until later this evening, chances are the campus theater is open. See if you can go inside for a great place to get some privacy as well as some comfy chairs to do your homework in. 4. Try your house or residence hall during mid-morning or mid-afternoon. Think about it: When are you least likely to be hanging out in your hall or house? When youre in  class, of course. If you want some privacy in a place that is familiar, try heading home during the mid-morning or mid-afternoon when everyone else is off in the academic buildings- if you dont have a class, of course. 5. Head to a far corner of the campus. Download the campus map from your schools website and look at the corners. What places dont you usually visit? Those are probably the places most other students dont visit either. If you have some time, head to a corner of campus that never gets any visitors and find a little corner of the world to call your own for a while. 6. Reserve a music studio. First and foremost, however: Only do this if youre sure theres plenty of extra studio space at that time- never steal this vital resource from the students who really need it. If there isnt much demand for space, consider reserving a music studio for an hour or two a week. Whereas other students will be practicing their violins and saxophones, you can put some headphones in and get some quality relaxation or meditation time. 7. Hang out in an art studio or science lab. If there arent any classes in session, art studio and science labs can be a funky place to get some privacy. You can have a phone conversation in private (provided theres no one else around to annoy)  or let yourself enjoy your creative side (sketching, painting, or maybe writing poetry?) while in a relaxing, calm environment. 8. Check out the dining hall during non-peak hours. The food court itself may not be open, but chances are you can still go and snag one of the comfy booths or tables (not to mention get a Diet Coke refill when you need it). Consider bringing your laptop so you can have some privacy while catching up on emails, Facebook, or other personal tasks that are hard to do with a ton of people around. 9. Wake up early and explore an entirely new part of campus.   It sounds horrific, but waking up early every now and then can be a great way to get some privacy, spend some time in self-reflection, and gain perspective. After all, whens the last time you had a few moments by yourself to go for a great morning run, do some morning yoga outside, or just go for a quiet walk around campus? 10. Stop by a campus chapel, temple, or interfaith center. Heading to a religious location may not be one of the first things that comes to mind when you think of where to go for privacy, but campus religious centers have a lot to offer. Theyre quiet, open most of the day, and will provide you with some time to reflect and process on whatever you need to for as long as you need to. Additionally, if youd like to get any spiritual counseling while youre there, theres usually someone you can talk to.

Describe the research methods and findings of one sociolinguistic Essay

Describe the research methods and findings of one sociolinguistic research project undertaken by Labov.( NOT the New York Department store study) - Essay Example The aim of descriptive research is to verify formulated hypotheses that refer to the present situation in order to elucidate it. Descriptive research is thus a type of research that is primarily concerned with describing the nature or conditions and degree in detail of the present situation (Landman 1988. p. 59). Descriptive Research also aims to show what already exists in a population or group of people. For example, an opinion poll that is conducted to determine the most popular Presidential candidate in an upcoming election, or the type of research used in this paper. Here are the results of an interview carried out in a New York City school. During the interview, a black boy enters a room where there is a big, friendly white interviewer. The interviewer puts a fire engine or a block on the table between them, and asks the boy to describe what he can about the object. In the conversation below, the remarks in parentheses are the interviewer's Here we can see the same kind of monosyllabic and defensive behavior and way of speech which produces a situation in which the child is in an asymmetrical situation where anything he says can, literally, be held against him, as Bereiter reported in his work. The child has seems to have acquired a number of devices to avoid saying much in a situation like this, and he strives quite hard to achieve this end. If one takes this interview as a measure of the verbal capacity of the child, it must be as his capacity to defend himself in a hostile and threatening situation. But unfortunately, thousands of such interviews are used as evidence of the child's total verbal capacity, or more simply his verbality: it is argued that this lack of "verbality" explains his poor performance in school. (Labov, W 1972 p. 8) The verbal behavior that is shown by the child in the interview above is not as a result of ineptness on the part of the interviewer. Rather, this is the result of regular sociolinguistic factors that are in operation both on the child and the adult in this asymmetrical situation. In urban ghetto areas, it is usual to encounter such behavior. Clarence Robins has worked with a group of boys ten to twelve years old, known as the Thunderbirds, and who dominated the preadolescent group in a low-income project in Harlem. In an interview involving a few younger brothers of the Thunderbirds aged between eight and nine years old, the question and answer approach was utilized, but this old approach did not work. Below is an extract from the interview between Clarence and Leon, an eight year old boy. CLARENCE: What if you saw somebody kickin' somebody else on the ground, or was using a stick, what would you do if you saw that LEON: Mmmm. CLARENCE: If it was supposed to be a fair fight-- LEON: I don'

Final Exam Assignment Example | Topics and Well Written Essays - 1500 words

Final Exam - Assignment Example oup faces an ethical dilemma on whether to provide a minimal support of food, clothes and water or return to the base camp and provide the Sadhu with a proper care. One individual decides that the journey was more important than the welfare of the stranger while another member tried to help him as much as he could. When the two individuals meet up, one of them asks the other How he feels about contributing to the death of the Sadhu. Nobody was sure whether Sadhu was dead or alive and no one was willing to accept total responsibility of the Sadhu but they did what they could to their convenience. The ethical issues brought in the parable are that of self interest, compassion and the issue of passing a burden to others. The issue of fulfilling self interest is portrayed by one member of the group who states that the journey as more important than helping a needy Sadhu.This show that he does not care of those in need and this is an ethical problem.The ethical issue of compassion which is presented in the virtue approach of ethical thinking is clearly shown by a member of the group who takes the burden of helping the sadhu although in the end of the journey he does not know whether the sadhu survived o died but he can be credited for trying to provide means in which the sadhu can get better. Passing on of burden from one person to the other is also an ethical issue raised within the parable as one member of the group passes the burden of Sadhu to the others. This occurs mostly in the society as people tend to pass stressful issues to other in order to escape the stress accompan ying the issue. Corporate social responsibility is a corporate self regulation that is incorporated into a business model. The built in self regulation by businesses ensures they adhere to the law, international norms and ethical standards. Under corporate social responsibility, businesses have big responsibility for the impact of the activities on the consumers, environment, communities,

McDonald's in the McSpotlight Case Study Example | Topics and Well Written Essays - 750 words

McDonald's in the McSpotlight - Case Study Example This can clearly be understood from the figure provided below (Botticell, Pucevich, Scriptunas, & Thurston, 1999). In the case of McDonalds, the company could have clearly reduced the performance expectation gap by avoiding the case and could have worked a way out with Morris and Steel by negotiating for an out of court settlement. This would have saved the company a whole lot of time and would have also ensured that the company and the stakeholders are not affected by the trial (Hartman & DesJardins, 2007). The trial for the company has been one of the longest and most expensive trials and this could have been easily avoided if the company used good negotiation techniques. Also, if McDonalds had implemented a stronger argument at the start of the case rather than allowing a slack in the performance, then the company would have been able to save up on time and also would have saved a lot of costs as well. The public issues life cycle consists of four main steps, a) changing stakeholder expectations, b) political action, c) formal government action, and d) legal implementation (Botticell, Pucevich, Scriptunas, & Thurston, 1999). With the start of the public issues life cycle the company was faced with a concern that was building regarding the healthiness of the food that the company served. The leaflets acted as the drivers of the issues and this brought out the problems into public. Also, the website that Steel and Morris had developed as a protest against the company also added to the driver and led the company to be faced with higher levels of problems with the stakeholders. As an executive of McDonalds, I would personally recruit and develop a team which would consist of people with excellent negotiation skills. Also, an attempt will be made to include people with a strong financial expertise and a law expertise. The staff of this team, irrespective of their expertise, should

Critically analyze the arguments against corporate power in Joel Essay

Critically analyze the arguments against corporate power in Joel Bakans book (The Corporation) - Essay Example akan’s famous book â€Å"The Corporation† vividly visualizes these negative demeanors of the corporations and suggests the ways and means to have tighter control over them, mainly to make them to engage in more corporate social responsibility activities. This research essay reviews the above book and details the Bakan’s important critiques and suggestions to make the corporations around the world to be law-abiding citizens. Joel Bakan’s book â€Å" the Corporation â€Å" is a book about the corporate form of business , it salient features as of today , the manner it functions and the impact it has on people and also deals with the so-called corporate social responsibility, and it brings to the front core about various corporate frauds and malpractices together its insulting demeanor. Joel Bakan argues that corporations are facilitated by law to work for their interests than that for others, thereby exploiting others without least respect for moral turpitude or legal frameworks. The so-called doctrine Corporate Social Responsibility (CSR) in the majority of the cases functions to camouflage its true identity or color thereby discarding public interest and enriching self-interest. Bakan is of the opinion that corporations which function as institution , which have the self-drafted mandate to work for its own self-interest and hence , these corporations are nothing but pathological organization, and they are now regarded as the most dangerous organization toothed with extraordinary powers through laws. In Chapter 1, Bakan is of the view that recent corporate scandals like Enron, WorldCom, Tyco, Satyam, etc. is not a new phenomenon, but it existed from the inception of corporate form of business. People now started to concern about the mammoth size of multinational companies, and the authority that these companies veil on the gullible public which has made a concomitant demand of introducing harsher regulations to control and manage these corporations. Bakan

The Education System Essay Example | Topics and Well Written Essays - 1750 words

The Education System - Essay Example What measures are we willing to take in order to achieve it What system are we going to introduce to our education so that we could produce individuals fit for this society Are we willing to sacrifice and violate some values such as the values of privacy and freedom just to attain this so called "perfect society" And if we do, will it be worth it What would have become of us as human beings Education is one way to implement discipline or a desired behavior of any sort. After all, it is undeniable that a nation's education system greatly influences the kind of citizens it has. The people's discipline, values, and way of living are all affected by the kind of education they were able to attain, since we all know that, before being exposed to the real world where we have to work, we have to go through education. Unless we are home schooled and aside from outside influences, we learn everything else in school: manners, culture, academics. If the education system of a society can be altered and controlled by one person, there is a great chance that he will gain control over all of the society. In Paulo Freire's "banking theory of education" from his book Pedagogy of the Oppressed, he argues that society uses education to avoid people from intervening in what they have created as the perfect society. They have come up with a system that does not allow students to think; rather they are only receptacles of teachings or deposits. He said that "the banking concept of education regards men as adaptable, manageable beings. The more students work at storing the deposits entrusted to them, the less they develop the critical consciousness which would result from their intervention in the world as transformers of that world". In this concept, students receive what the teachers give. They don't have a perception or an opinion of their own. They are only to record, memorize, and repeat without thinking. (Freire, Chapter 2). This way, it will be sure that no one stands up to change anything in the system. "The more completely they accept the passive role imposed on them, the more they tend simply to adapt to the world as it is and to the fragmented view of reality deposited in them". Thus his idea of the students being the "oppressed" and the education system being oppressive because the system has removed the students' ability to think creatively and at the same time, be contributors to the learning process so they don't only listen. Michael Foucault's concept of Panopticism, on the other hand, introduces a mechanism that involves instruments, techniques, and procedures to be able to suppress and control people's minds to make sure that discipline "reigns over society as a whole" (Foucault, Part 3: Discipline). Although this is a completely separate idea, the concept of gaining power and control is the same with Freire's "banking concept". In Foucault's book Discipline and Punish, Part Three, he compares panopticism with a plague affected town. The plague can be an illness, or a symbolic disorder of rebellions, crimes, and vagabondage. In order to contain this plague and avoid any "contagions", a system was built to supervise each and every citizen in all their movements. The town was closed and they were prohibited to leave town in pain of death. All events were under surveillance and everything was recorded. From this concept, Foucault discusses a style of architecture from Jeremy Bentham's idea wherein

Freedom of Goods of the European Union Article Example | Topics and Well Written Essays - 2000 words

Freedom of Goods of the European Union - Article Example Included in the main goals of the said organization are foreign trade interaction, democratization, human rights, pluralism and the rule of law.1 The focal point of the objectives is the establishment of a Common Market which can enable a coherent activities related to the economy towards development and expansion. This will enable the free movement of goods in the member countries by preventing different forms of national restrictions in terms of processes such as importation, exportation and other forms of product movement. The main issue that is the focus of the study is the governing law on the basis of the movement of the goods and products across borders. The implementation of the EC Treaty and Law can be considered important due to the question of its maximum applicability until the present era. Due to the fact that the European Union can be perceived as a single unit in the economic society, the process of trade of products and goods can be predicted to be relatively more complicated. The governing law then can be considered as the key concept that can be studied. Although the European Community (EC) has different specified objectives, the participation and control of the international trade can be considered as the main goal. ... It the view of the system can be considered confusing, this is due to the fact that although the member nations of the EC has independent governing laws, the incorporation of the EC Law can be considered as a necessity and requirement. But due to the fact that the organization requires full-pledged cooperation and dedication, the EC Law is applied by the national courts. This is important to be able to determine the applicability of the rules in the member nations. The EC Justice is the law governing unit that cooperates and transcends the member nations.2 In the trade and freedom of goods there are dynamics that are needed to be given attention. These are the provisions of the EC Law in terms of the importation process, exportation process, and other issues. The EC Law that governs the importation of goods from member countries is under the Article 30. One of the important captions is in relation to the quantitative restrictions in the importation process between Member nations. This also includes related processes within the member nations and the governing body.3 The governing law is under the duties, charges and taxes. Article 23 is a related part of the EC Law that pertains to the "prohibition of the tariffs and other related measures." One of the related cases is that of the Social Foonds and SA CH. BRACHFELD that involved the importation of Belgium of diamonds. The product was charged with 0.33% duties which are prohibited by the EC Treaty. The charges that are involved upon crossing a frontier can be considered as one of the hindrance for the proliferation of the movement of goods. Under the EC Law the member states are not allowed to charge such fees and taxes.4 Upon consideration of the effect of

The Education System Essay Example | Topics and Well Written Essays - 1750 words

The Education System - Essay Example What measures are we willing to take in order to achieve it What system are we going to introduce to our education so that we could produce individuals fit for this society Are we willing to sacrifice and violate some values such as the values of privacy and freedom just to attain this so called "perfect society" And if we do, will it be worth it What would have become of us as human beings Education is one way to implement discipline or a desired behavior of any sort. After all, it is undeniable that a nation's education system greatly influences the kind of citizens it has. The people's discipline, values, and way of living are all affected by the kind of education they were able to attain, since we all know that, before being exposed to the real world where we have to work, we have to go through education. Unless we are home schooled and aside from outside influences, we learn everything else in school: manners, culture, academics. If the education system of a society can be altered and controlled by one person, there is a great chance that he will gain control over all of the society. In Paulo Freire's "banking theory of education" from his book Pedagogy of the Oppressed, he argues that society uses education to avoid people from intervening in what they have created as the perfect society. They have come up with a system that does not allow students to think; rather they are only receptacles of teachings or deposits. He said that "the banking concept of education regards men as adaptable, manageable beings. The more students work at storing the deposits entrusted to them, the less they develop the critical consciousness which would result from their intervention in the world as transformers of that world". In this concept, students receive what the teachers give. They don't have a perception or an opinion of their own. They are only to record, memorize, and repeat without thinking. (Freire, Chapter 2). This way, it will be sure that no one stands up to change anything in the system. "The more completely they accept the passive role imposed on them, the more they tend simply to adapt to the world as it is and to the fragmented view of reality deposited in them". Thus his idea of the students being the "oppressed" and the education system being oppressive because the system has removed the students' ability to think creatively and at the same time, be contributors to the learning process so they don't only listen. Michael Foucault's concept of Panopticism, on the other hand, introduces a mechanism that involves instruments, techniques, and procedures to be able to suppress and control people's minds to make sure that discipline "reigns over society as a whole" (Foucault, Part 3: Discipline). Although this is a completely separate idea, the concept of gaining power and control is the same with Freire's "banking concept". In Foucault's book Discipline and Punish, Part Three, he compares panopticism with a plague affected town. The plague can be an illness, or a symbolic disorder of rebellions, crimes, and vagabondage. In order to contain this plague and avoid any "contagions", a system was built to supervise each and every citizen in all their movements. The town was closed and they were prohibited to leave town in pain of death. All events were under surveillance and everything was recorded. From this concept, Foucault discusses a style of architecture from Jeremy Bentham's idea wherein

The Discussion of Future Career Goals Essay Example | Topics and Well Written Essays - 750 words

The Discussion of Future Career Goals - Essay Example Firstly, the service that I hope to deliver will be fabricated upon the increasing levels of tourism that my native country has experienced with regards to the number of individuals that are currently traveling abroad for vacation. Although a litany of different travel agencies exists which can facilitate the process of booking tickets and planning hotel stays, a full-service travel industry does not exist. As such, providing cultural integration, analysis of any needed medical examinations or shots prior to going to a country, a crash course in etiquette, and an emphasis upon the specific activities that individual hope to engage in while they are on vacation will serve as new integration with the service industry. Accordingly, the tenure goal of this particular service plan will be to open at least one travel service agency within a population center in excess of 4 million people. I further twenty-year plan will be to expand this industry and have it represented within at least 3 t o 5 different locations around the country; with a 25-year plan of appointing a manager and director to oversee the coordinated efforts that these entities can engage. Further, a specific positioning strategy will be predicated upon the fact that the current level of service offerings that exist within the specific sphere are incapable of meeting the needs or demands of the population in question. Moreover, due to the fact that more and more individuals are traveling each and every year and the projected growth within the tourism industry is set to exceed 30% within the next five years, it only makes logical sense to engage with this market as a means of promoting my own career and servicing the professional needs of individuals within the economy. Further, the Four P’s of marketing, price – promotion – place – and product, can be utilized as a means of marketing this service and increasing the level of engagement by the society or population. Firstly, be fore engaging with an understanding of price, promotion, or product, the place is a definitive portion of the marketing mix that must first be analyzed.  

Competitor Analysis Essay Example for Free

Competitor Analysis Essay Tata Nanos competitors can be classified on three scales Economy, Performance and Convenience. Based on Economy Though Tata Nano was launched as the 1 Lakh car, its exact price range varies between Rs.1.59 lakhs to Rs.2.23 lakhs in the market at present. With this price range, in the four wheelers category there is Maruti 800, Maruti Suzuki OMNI, Maruti Alto 800 and Hyundai Eon which has a price lesser than Rs. 3 Lakh. Being the cheapest car available in India, they also have competitors in the two and three wheeler segments. Tata Nano would be the next best option for this segment of customers if the budget limit is in this range. Tata Nano positions itself to be a family car available to those who can afford a bit more than they would spend for a two wheeler. Based on Performance Tata Nano has a 624 cc engine and has a maximum power of 37.4 bhp. Compared to its counterparts in the same price range, Tata Nano has a disadvantage on its engine capacity and maximum power. Mileage is also a crucial factor for consumers in India who look for Value for Money products. Tata Nano claims a mileage of 22.2 Kmpl for its base model and this compromises on its engine capacity and other performance characteristics. Most of the other features of the probable competitors of Tata Nano are almost at parity with it. Based on Convenience During the planning stages of Tata Nano, the team of engineers who designed the vehicle faced the toughest challenge of releasing a car that was both attractive as well as cheap. Tata Nano is 8% shorter and has 21% more interior space than Maruti 800. Tata Motors Limited have given due importance for the design of this low budget car to not lose out in the market just because of it being unattractive. It has the best in class maneuverability lowest turning circle diameter. The weight of the vehicle is just 600 kg which is also comparatively lesser than Maruti and Hyundai Cars. This could be taken as both an advantage as well as a disadvantage. But in this case, the light weight of the vehicle contributes to some of the crucial distinguishing features of the car mentioned above. Some of the major launches by competitors that are specially focused to give competition to the Tata Nano are Bajajs RE60 and Renault has also announced that it would be releasing a new car in this category. None of the launches against Nano could disrupt Tata Nanos market share significantly. Tata Nano is also planning to bring in variations to its initial model to get in line with its re-launching scheme of focusing on a the youth segment than the family segment. Comparison of Specifications of Tata Nano and its closest competitors Top 10 best-selling cars in India

Advantages and Disadvantages of Ambient Occlusion Shader

Advantages and Disadvantages of Ambient Occlusion Shader This dissertation is to simplify the ambient light in contact shadow using Maya embedded language (MEL) which can be useful for all lighting artists to get a global illumination effect in simple steps and to reduce process of render time and they can connect and disconnect the ambient shader and adjust using GUI (graphical user inter phase) all the buttons will be in GUI itself. These are simple techniques but if one needs the old fashioned moves he’s got to go to the control set up tools. But these are simplified here and all can be achieved in simple clicks which is easy to navigate. All actions present in the GUI area all are present in my interface and one reason its better as its simple. This has been focused in a manner to anticipate all professional or not its easy to all. This helps all and even helps to navigate better through the GUI controls better. Chapter 1 INTRODUCTION Ambient Occlusion is a lighting technique that which is used to cast shadows on objects. This is a technique used in lighting which is misunderstood as this method casts shadows on objects where light does not reach. This method gives out a good render to the object with normal modes in the output. Ambient occlusion creates or casts soft shadows around the object which gives out a molded look. In technical terms ambient occlusion is a global illumination method and is commonly referred to as a cheap trick for alternative method of global lighting method. To be more specific in answering the above is each person has his means of working and all processes differ from one another. This is where ambient occlusion comes into being as some calculate the intensity of the light setup for every work file but most don’t and the best way to overcome is to use ambient occlusion where this does all the calculation and gives a better quality render more than we can accept. On aspects to other global illumination methods ambient occlusion does calculate in it manner but regarding other properties in the scene file. Where it has to go according to all shapes in the scene file to calculate the light setup to generate a global light effect which seems less complex than the regular lighting aspect in the software. This specialty makes ambient occlusion very well accepted among game developers and level designers and in various levels of production animation. Here I am going to simplify the Ambient Occlusion shader to get ambient light in all contacted shadows. Connecting the ambient occlusion to all the shader is a big process as we have a number of shader in a single scene file. I am going to develop a separate user interface in Maya for the user to manipulate my tools. By using my tools all the shader can be connected to the ambient shader with the single click and also can disconnect all the ambient shader in a single click. 1.1.AIM To simplify the ambient light in contact shadows using Maya embedded language (MEL) 1.2.OBJECTIVES Study the advantages and disadvantages of ambient occlusion shader To study about the real world light properties To implement natural lights using software Developing a MEL for simplifying ambient occlusion shader Developing an user interface in Maya for user to manipulate the tool(GUI) 1.3.STATEMENTS OF THE PROBLEM To connecting the ambient occlusion shader to all the other shader is a big process if there is number of shader are available in single scene file 1.4.RESEARCH QUESTIONS What is ambient occlusion? What r the different techniques for creating indirect lighting How shadows variation in time what are the advantages and disadvantages in ambient occlusion texture How to simplify the ambient occlusion texture node 1.5.SIGNIFICANCE OF STUDY When we are connecting ambient occlusion texture to number of shader most of them are facing the problem like connecting with shader one by one some time we may miss some shader while connecting and also it will take time to connect to lot of shader Here am going to do this dissertation for solving these problems. Here I am going to simplify the ambient occlusion texture by MEL script 1.6.Hypothesis The hypothesis of this project is to simplify the ambient occlusion texture using Maya embedded language (MEL) Chapter 2 Literature Review 2.1.Literature: Mastering Maya 2009 Eric Keller, Eric Allen and Anthony Honn 2009 This book speaks about how ambient occlusion forms form indirect light rays and ambient occlusion effect can bring from Final Gathering and it will take more render time when u create in Final Gathering The above information help to get some knowledge and information about ambient occlusion. 2.2.Literature: Mental ray for Maya 3ds max and XSI Livny Boaz Ambient occlusion adding realism and produce more details in the output and render will be fast when we compare to Final gathering and Globule illumination how ambient occlusion works and explain detail about ambient occlusion attribute and also tell about what are the different between occlusion and ambient occlusion 2.3.Literature: Introducing Maya 2011 Dariush Derakhshani We can take ambient occlusion as separate render pass that to help add more depth in models and later we can adjust in compositing. Ambient occlusion give great contact shadows 2.4.Literature: Maya Visual Effects: the innovator’s guide Eric Keller Ambient occlusion is the easy and quick way to get Global illumination and tell how ambient occlusion note works in texture. Ambient occlusion produce soft shadows as like real world. when two models are placed near certain amount of light will be block and u will get soft shadows at the corner of the object 2.5.Literature: Rendering with Mental ray 3Ds Max Joep Van Der Steen There are different types of shadow in 3ds max like normal 3ds max shadows and ray trace shadows .but normal shadows wont work in mental ray. If u need to get accurate shadows go for ray trace but render time will be increases when compare to normal shadows. Bounce light gives u realistically feel as like real life lighting. In real life light wont stop travel when its hits the ground it will hit and bounce for certain distance till its die and ambient occlusion also the one form of creating bounce light or indirect lighting for the scene but ambient occlusion wont be physically correct lighting when compare to FG(Final Gathering ) and GI (Globule illumination ). Ambient occlusion give reflective occlusion where we wont get in normal occlusion. 2.6.Literature: Writing Mental ray shader: perceptual Introduction Andy Kopra This book tells about how ambient occlusion rays are calculating in the scene and tell about how Technically ambient occlusion works in MEL scrip this book gives me clear idea how to develop my scrip in MEL 2.7.Literature: Rendering Techniques 2006 Tomas Akenine-Mà ¶ller   Ambient occlusion shadow produce form ambient light. Ambient light emits form all direction and produce soft shadows. Most of the production companies using ambient occlusion for lighting for time saving in lighting and rendering. 2.8.Literature: Maya: secrets of the pros John L. Kundert-Gibbs, Dariush Derakhshani Ambient occlusion techniques in production are used in two ways are backing of ambient occlusion texture and taking of ambient occlusion passes in render. In backing of ambient occlusion we cant tweak while compositing but In ambient occlusion render pass we can tweak and bring new effect in compositing. 2.9.DVD:Digital Tutors Mental Ray Nodes Library This Tutor helps me what are the uses of the ambient occlusion how to connect ambient occlusion texture node in shader and explain clearly about the Attribute Editor of ambient occlusion to get good output. Chapter3 METHODOLOGY This document consists of a quantitative and qualitative method by Survey and gathering information from Internet, Books, tutorials , articles, books, paper and videos. 3.1.POPULATION: The people who are suitable for this population is texturing artist, lighting artist, rendering artist. They were questioned regarding the ambient occlusion shader and its uses in production field. The population of this research work carries the production experienced person. 3.2.SAMPLING: Judgment Sampling 3.3.SCOPE AND LIMITATIONS: This research is limited to the ambient occlusion shader. Chapter 4 Lights in CG 4.1 Overview 4.2 Types of lighting Chapter 5 Indirect lighting in CG 5.1Introduction 5.2 Final Gathering (FG) and Global illumination (GI) Chapter6 Ambient occlusion 6.1 overview 6.2 How it works 6.3 Advantages of ambient occlusion Chapter 7 Rendering 7.1 Mental Ray rendering 7.2 occlusion render over mental ray Chapter 8 MEL 8.1 Introduction to MEL 8.2 Creating GUI Chapter 4 Lights in CG 4.1.Introduction Lightning in computer graphics (CG) is nothing but giving special effects to the scenes to improve the quality of animation. Lightings available for all kind of occasions, all we need to do is just adjust the parameters. Most of them will not give more importance for lighting while creating there images or animations. Lighting plays very important role in computer graphics (CG), we can easily find the talented and untalented person in computer graphics (CG) by looking at the light effects given in the image or animation .Though we already know something about lightings in photography, film and video. We are just trying to bring the reality to computer graphics (CG). Lighting is used for creating a 3D effect by differentiating the foreground from background or else we can combine both to create 2D effect. This effect (Lighting) is mainly used to impress the viewer. Lighting is the most powerful tool in the computer graphics because this is the only tool which makes the viewer to feel. If your lighting perfectly fits for your image or animation then the final output will be much good to impress the viewer. Lighting can be expressed in two ways by being illuminated and a process of illumination. Lighting is defined globally by means of object which can be visible through the source illuminant application. Bouncing off lights or shiny objects can be made by the manipulation of light. If natural light is unavailable artificial lights can be used instead. Lighting is used everywhere and anywhere. Light is never said to be the same because of its variability, so lighting also changes. The natural sun light that we see in day to day life varies in a short period of time but the quality does not vary. The term state of lighting could in term mean intensity, its direction, its texture and form. This means something emotional. lighting is also a process of purposeful planning and design in which the light is to illuminate in an object. When lighting is necessary, the ligh ting position and placement are to be in considering, once deciding the intensity. Lighting process also refers in analyzing the light quality as it strikes the subject. 4.1.ADDING LIGHT SOURCES: Adding lights to the scenes can be done in several ways and also different kinds of lights available in lighting effects. Some kind of lights are used to highlight the background, foreground, character etc., we must choose the light which is highly suitable for the cases so that the people could not able to find which effect is used. There are several types of adding lights effects available POINT(OMMIDERECTIONAL)LIGHTS SPOTLIGHTS DIRECTIONAL LIGHTS AREA LIGHTS Site accessed on 27th sep Pixel Cinematography: A Lighting Approach for Computer Graphics (SIGGRAPH 96 Course 30) SPHERICAL AREA LIGHTS FLAT AREA LIGHTS LINEAR LIGHTS MODELS SERVING AS LIGHTS 4.2.1POINT(OMMIDERECTIONAL)LIGHTS Point lights are also called as omni or omnidirectional lights, because it transmit in all directions, like any other lights e.g. bulb, sun etc The main thing in giving this effect is checking the shadows it should not spread in all directions. In real life, u can see more uniformly omnidirectional lights. Most of the times point lights are similar to real light bulbs for example, bulb lights spread allover the particular empty place, if a opaque thing (metal, wood etc.,) is kept in that place the shade will form behind that thing and side and size of the shade is depend on the location of the bulb. Though it is likely as omnidirectional we can spread it by using throw-pattern that is uneven. if you want to focus more light on some particular direction then you must do this action texture map to the light else by grouping the light with 3D object that produce shadows This light rays stimulated out from one infinitely small point in space, Its illumination and shadows passes out form the light in all direction. It is difficult to find a light which is uniformly omni directional in nature. Many light sources emit some amount of light in some directions. Uneven point lights can be used as a throw pattern, like a real bulb to emit more light in some direction rather than in other direction. This is done by applying a texture to the light or else by grouping the light with the 3d object which will cast shadows. 4.2.2.SPOTLIGHTS: Spotlights is the major light effect which is commonly used in computer graphics (CG).This light effect is used by major computer graphics (CG) specialist because it can be used to focus on a specific target. Spotlight is also similar to point light sometimes but it slightly differs in pointing the target there are some limitations for spotlights are it should not exceed.we can determine the focus aim by rotating the spotlight. You can also fix a target for your focus so that the focus will always on that particular target. Spot Lights are the most used light in the lighting design of computer graphics. Most of the popular artist prefer spotlights to light a scene because, this light can be controlled in any times to aim light at a selected target. The emition of spotlight is light radiation from a point, same as like the point light. The illumination in the spotlight is controlled through a cone angle or a beam of the light. The rotation of the spotlight will determine where the beam is aimed. Objects can also be linked to light to stay in the same orientation position. A spotlight has more controls and options which is not found in other type of lights, some options like projecting a image map from the light, creating fog, etc†¦ With the help of spotlight the falloff which is the softness of the cone, allows the intensity of light diminish more gradually in the edges of the beam. 4.2.3.Directional Lights Directional light is an infinity source of illumination from a distance. These lights are variously known as distant, direct or infinite light. This light sets a single vector for its entire illumination object from the same angle, doesn’t matter the object’s position. The shadows emitted by the directional light are in same direction and they are orthogonal projections of each 3d object’s shape. The matter in placing the directional light is which way it’s pointed. The directional light is not so easy in aiming to a preferred local area like point and spot light. A set of lights constituting from different angles can be used to produce fill light, even in the individual lights in all angles in a low intensity. These lights can fill very large areas with illumination appearing as ambient, like filling the daylight from the sky giving a quick effective global ambience. it deals with the light position where it is placed and it is all about the direction of the object, shadow and lit falls depend on the light location. However the sunlight is the major source of light we need some more light effects to impress the viewer most probably directional light is used. The directional light which needs some specific angle to present a proper lighting so that the person should concentrate more on angles. 4.2.4.Area Lights The lights like point and spot emits light from a infinity source into space, which is not simulating the size of physical light source in real life. Point light cannot be scaled in any dimension. To get more accurate simulations of the real light, this area light have definable scale, so the all the rays of light are not emitted exactly from the same point. If the light is scaled small, the illumination will appear similar to a point light. The larger scale of area light, make the light appear softer, shadows appears to soft and the illumination in nearby objects. The amount of shadows and light achieved with area light makes the scene excellent in realistic rendering. The source of the light comes from some long gap like windows etc, is said to be area lights. This effect is important when the image or animation dealing with the room setup for example if there is a room there might be some windows so we must implement the area lights. It matches the situation than any other lighting techniques 4.2.5.SPHERICAL AREA LIGHTS: Spherical area light is also like area light it will spread in all directions. It is also called spherical light, spherical region of space is the source for the spherical light, this is mainly used in the case where the large light source. The spherical light has omni directional so the light does not have effect on our output. you can also replace the spherical light to point light when the illumination needs more concentration on light to cast soft edged shadows 4.2.6.FLAT AREA LIGHTS: Area light also available in flat shapes such as discs and rectangles. Light emitted from two dimensional areas can use less rendering time than three dimensional areas. The number of samples used to adjustable either approach. A rectangular area light is same as illuminated ceiling panel, a plane width and height that illuminates with naturally soft, diffused light. Light from ceiling is the major use of flat area light simulating the reflected illumination brightly lit walls and ceiling providing a soft. Aiming or rotating light changes your result, light from the edge of the flat area light is same as creating sharper shadow and also dimmer. 4.2.7.LINEAR LIGHTS: Linear light has same functionality as florescent tube and also scaled in one-dimension.it has a length soften the shadows and extend its illumination in one direction. How linear light affects the output. The shadow objects along the length of the light are very soft, but shadows from the end of the light are focused. We can use linear lights from fluorescent tubes, laser blasts. Line shape is not specifically needed, linear lights and it is used for general soft lighting scene they will not add as much as you’re rendering time as other types. It is similar as spherical area light . 4.2.8.MODELS SERVING AS LIGHTS: Light effect by model serving as lights is a 3dimensional model in your scene sort of area light source. By using this model we can make a nontraditional shape of light like neon sign, it is also used as a true light sources, as shown in figure. However, bright looking objects can be made by rendering the neon sign,and also by positioning other kind of light to the surface rounding area. Chapter 5 Indirect lighting in CG 5.1Introduction The indirect illumination simulates caustics, global illumination and final gathering.the specification of light energy is required. To allow color the light energy is as a RGB triple. But the values of the RGB are usually much higher than the range for color. In the preprocessing step the number of photons stored from the light source is determined by STORE and the number of photons emitted is determined by EMIT. The photon emission stops when either of the limit is reached. Using the power law of 1/r(exp) energy from the light source decreases as the square of the distance increases from the source. The physical correctness is lost when the exponent is other than 2. During caustics preprocessing The number of caustics photon stored can be specified by the caustic photon value which controls it. Likewise global photon value can be specified for global illumination. The value ranges from 10,000to 100,000.by increasing the value the accuracy increases and the bluriness decreases. In i ndirect lighting the lights sources are invisible by default. As the number of visible lights are increased the performance is reduces. 5.2 Final Gathering (FG) The estimation of global illumination is done by a technique called Final gathering. It can be illuminated by either sampling a number of direction over the hemisphere or by averaging the total final gather points nearby. To improve the quality of global illumination final gathering is used. Without final gathering computation on a diffused surface is made by the photon intensity near that point. With final gathering the new rays of light is are made to hit the sample hemisphere for the determination of incident illumination. Using illumination from the globillium photon map and the illumination at the points of diffused surface is computed. Some rays hit a specular surface and their contribution for final gather color is zero. Tracing each ray utilizes lot of time so it is done when it is necessary. For purely diffuse scene final gathering eliminates low frequency noise and dark corners. As the final gather averages over many values of direct illumination fewer photons are needed. F inal gathering can support only a single bounce. And multiple effect have far less impact on the image. The final gathering can perform these if the shaders can adjust the trace depth, otherwise it will be performed by photons by default. To control the photons coming from distant source of light final gathering is used and is good for film production. For CAD related applications photon mapping is used. Final gathering can be turned on or off in the options. In each final gathering the number of ray shot can be changed. The maximum distance at which the ray can be used depends on the scene extent. Decreasing the scene extent can reduce the noise but increase the render time. 5.2.1.Global illumination: Global illumination simulates the light bouncing of an object. It has two steps process. the photon emitting light emits photon in to the scene. A photon map is created to store the intensity and place of the photon in three dimensional space. Then the surfaces are illuminated. It is based on the intensity of the photon. In global illumination diffusive value is a must. In the second part of the image the actual process is rendering of the image. The energy value is averaged and these values are interpolated to get the image as the light is bouncing of the diffused surface. After perfecting the in this method, the photon map can be saved and reused. Thus we can save the time of rendering each frame, provided the scene is static. This is the calculation of more complete light transfer model said to be global illumination. This accounts for the indirect reflected light transfer in the scene. There are two types of global illumination, one simulates the behavior of the light of perfect specular light, and the second behaves in perfect diffuse light. These are most commonly referred to ideal specular, which hold ray tracing. Perfect diffuse reflections are called an ideal diffuse reflection, which is calculated using radiosity. This technique was developed in enhancing the realism in computer images in mimicking the light transfer. In periods it developed like image synthesis (photorealism) to simulation (photo accuracy). The radiosity is computed first and the ray tracer is computed to calculate the direct illumination the same way the reflection and refraction. 5.2.3.Local Illumination This is the direct illumination from a light source, this means a method of lighting which come form the direct visible source. This will not take full light in account; it only shows how the light affects the object that it calculates in the scene. Local illumination neglects the reflections and light propagations as its’ bounced around the environment. The light transfer simulation in local illumination computes the light only produced from its light source itself to the object that it illuminates and stops there. In a sense an incomplete light transfer’s model because it computes only the effect of direct light and cheats by the environmental lighting settings as glow to make it as reflected.[9][10] Local and Global 5.2.4.Ambient Light This is a light with constant intensity setting on the scene which serves as the sum of all in the direct illumination reflections in the scene. When describing this in effect ambient light is a kind of self-glowing illumination that mimics the object-to object light reflection. It is an independent intensity for all the objects in the scene. This light was invented to fake the direct illumination interobject reflection so the image will not be dark. This setting is adjusted globally through a scene parameter or per object. The preferable setting for ambient light in most scenes in set to be zero or low unless the object is producing light. This setting makes the fill light and the secondary lights influence in your scene more visible. Site accessed on 19th oct [http://:jmsoler.free.fr//tutor/lumiere_cornell_en.htm] Chapter 6 Ambient occlusion 6.1.Overview: Ambient Occlusion is a lighting technique that which is used to cast shadows on objects. This is a technique used in lighting which is misunderstood as this method casts shadows on objects where light does not reach. Ambient occlusion creates or casts soft shadows around the object which gives out a molded look. In technical terms ambient occlusion is a global illumination method and is commonly referred to as a cheap trick for alternative method of global lighting method. This technique is to get ambient light in all contacted shadows. This is where ambient occlusion comes into being as some calculate the intensity of the light setup for every work file but most don’t and the best way to overcome is to use ambient occlusion where this does all the calculation and gives a better quality render more than we can accept. 6.2.How ambient occlusion works: Ambient occlusion is a technique which adds visual realism to the image without being physically correct. The ambient occlusion result can be used to darken concave areas, which human eye perceives as indirect illumination shadows, or  contact shadows. The advantage of ambient occlusion is its computational speed. As it may be computed with very short rays and as no additional shader evaluations are required, the performance may be significantly higher than for  final gathering. 6.3.Ambient occlusion gains render time: Ambient occlusion is enabled by default. However, no actual computations will happen until requested by further settings or by shaders. The ambient occlusion cache is set  off  by default. In this mode, only shaders which  call for ambient occlusion  values will initiate computation on demand. If no such shaders exist in the scene, there is no overhead compared scenes rendered with ambient occlusion turned off. In case the ambient occlusion caching is enabled then mental ray will perform some computations before rendering starts, to fill the cache. The global defaults for ambient occlusion settings can be specified as  scene options  or on the mental ray  command line. Most of these values can be overwritten by a shader. The  ambient occlusion caching  may be enabled for the current rendering to gain overall speed. In this case, several preprocess passes will be computed. In the first pass, some ambient occlusion points are created on a coarse grid. Subsequent passes refine the grid adaptively. The density of the grid is determined by the  ambient occlusion cache density  setting which gives the  upper bound to the number of ambient occlusion points per pixel. Site accessed on 19th oct http://download.autodesk.com/us/maya/2009help/mr/manual/ao.html 6.4.Results better than indirect light: Ambient occlusion is the easy and quick way to get Global illumination and tell how ambient occlusion note works in texture. Ambient occlusion produce soft shadows as like real world. when two models are placed near certain amount of light will be block and u will get soft shadows at the corner of the object Ambient occlusion adding realism and produce more details in the output and render will be fast when we compare to Final gathering and Globule illumination Ambient occlusion refers to a type of shadowing that occurs when the ambient light in an environment is occluded (blocked) from reaching a surface by other nearby objects or other parts of the same object. You can see ambient occlusion effects in the photograph .The darkness that occurs in the cracks and crevices in the plaster design on an overcast day are a perfect example of ambient occlusion. Ambient occlusion effects are seen in many renders created using Final Gathering. that the ambient occlusion that occurs in a Final Gathering render lacks a certain amount of detail. Unless you increase the number of Final Gathering rays, detailed ambient occlusion shadows are difficult to achieve, and the more rays you emit into a scene, the longer the render time will be. This latter method is the most common approach and offers the most flexibility: the occlusion pass can easily be modified in the compositing software. Eliminating the need to re-render the entire scene if a change needs to be made. In this way you can use the ambient occlusion texture to augment the shadowing of a render pass that uses Final Gathering or as a substitute for rendering with Final Gathering Literature: Mental ray for Maya 3ds max and XSI Livny Boaz Literature: Maya Visual Effects: the innovator’s guide Eric Keller Literature: Mastering maya 2009- Eric Keller Chapter 7 Rendering 7.1 Mental Ray rendering Mental ray rendering is capable of producing a realistic and quality image. It can render just with a single processor machine. It is achieved by advanced and proprietary acceleration technique. It achieves better performance using parallelism on multi processor machine and also on network machines. Mental ray can be used on wide range of application, such as in full length movies, games, architectural design and on virtual models. Mental ray rendering is used as a standalone application for efficient rendering on local machines and as a software library on 3D content creation and CAD systems. Mental ray has a number of standard shaders which range from basic illumination to typical materials for architectural and design, car paint to physical sun and sky lighting. Mental ray has a built-in standard models for best rendering performance and quality cover. 7.2.Rendering Ray tracing is an option on mental ray. Ray tracing is used for rendering very complex lighting. Ray tracing software is based on ray tracing architecture which allows for the flexible implementation of lighting effect. It includes reflection, global illumination, refraction. To speed up the ray intersection calculation it uses advanced tree algorithms. From an on-demand loading of geometry it can adjust to dynamic scene manipulation. Ray trace is used to produce shadows of an object. Without the ray trace is turned on there will be no shadows. In ray tracing, the light path is tr Advantages and Disadvantages of Ambient Occlusion Shader Advantages and Disadvantages of Ambient Occlusion Shader This dissertation is to simplify the ambient light in contact shadow using Maya embedded language (MEL) which can be useful for all lighting artists to get a global illumination effect in simple steps and to reduce process of render time and they can connect and disconnect the ambient shader and adjust using GUI (graphical user inter phase) all the buttons will be in GUI itself. These are simple techniques but if one needs the old fashioned moves he’s got to go to the control set up tools. But these are simplified here and all can be achieved in simple clicks which is easy to navigate. All actions present in the GUI area all are present in my interface and one reason its better as its simple. This has been focused in a manner to anticipate all professional or not its easy to all. This helps all and even helps to navigate better through the GUI controls better. Chapter 1 INTRODUCTION Ambient Occlusion is a lighting technique that which is used to cast shadows on objects. This is a technique used in lighting which is misunderstood as this method casts shadows on objects where light does not reach. This method gives out a good render to the object with normal modes in the output. Ambient occlusion creates or casts soft shadows around the object which gives out a molded look. In technical terms ambient occlusion is a global illumination method and is commonly referred to as a cheap trick for alternative method of global lighting method. To be more specific in answering the above is each person has his means of working and all processes differ from one another. This is where ambient occlusion comes into being as some calculate the intensity of the light setup for every work file but most don’t and the best way to overcome is to use ambient occlusion where this does all the calculation and gives a better quality render more than we can accept. On aspects to other global illumination methods ambient occlusion does calculate in it manner but regarding other properties in the scene file. Where it has to go according to all shapes in the scene file to calculate the light setup to generate a global light effect which seems less complex than the regular lighting aspect in the software. This specialty makes ambient occlusion very well accepted among game developers and level designers and in various levels of production animation. Here I am going to simplify the Ambient Occlusion shader to get ambient light in all contacted shadows. Connecting the ambient occlusion to all the shader is a big process as we have a number of shader in a single scene file. I am going to develop a separate user interface in Maya for the user to manipulate my tools. By using my tools all the shader can be connected to the ambient shader with the single click and also can disconnect all the ambient shader in a single click. 1.1.AIM To simplify the ambient light in contact shadows using Maya embedded language (MEL) 1.2.OBJECTIVES Study the advantages and disadvantages of ambient occlusion shader To study about the real world light properties To implement natural lights using software Developing a MEL for simplifying ambient occlusion shader Developing an user interface in Maya for user to manipulate the tool(GUI) 1.3.STATEMENTS OF THE PROBLEM To connecting the ambient occlusion shader to all the other shader is a big process if there is number of shader are available in single scene file 1.4.RESEARCH QUESTIONS What is ambient occlusion? What r the different techniques for creating indirect lighting How shadows variation in time what are the advantages and disadvantages in ambient occlusion texture How to simplify the ambient occlusion texture node 1.5.SIGNIFICANCE OF STUDY When we are connecting ambient occlusion texture to number of shader most of them are facing the problem like connecting with shader one by one some time we may miss some shader while connecting and also it will take time to connect to lot of shader Here am going to do this dissertation for solving these problems. Here I am going to simplify the ambient occlusion texture by MEL script 1.6.Hypothesis The hypothesis of this project is to simplify the ambient occlusion texture using Maya embedded language (MEL) Chapter 2 Literature Review 2.1.Literature: Mastering Maya 2009 Eric Keller, Eric Allen and Anthony Honn 2009 This book speaks about how ambient occlusion forms form indirect light rays and ambient occlusion effect can bring from Final Gathering and it will take more render time when u create in Final Gathering The above information help to get some knowledge and information about ambient occlusion. 2.2.Literature: Mental ray for Maya 3ds max and XSI Livny Boaz Ambient occlusion adding realism and produce more details in the output and render will be fast when we compare to Final gathering and Globule illumination how ambient occlusion works and explain detail about ambient occlusion attribute and also tell about what are the different between occlusion and ambient occlusion 2.3.Literature: Introducing Maya 2011 Dariush Derakhshani We can take ambient occlusion as separate render pass that to help add more depth in models and later we can adjust in compositing. Ambient occlusion give great contact shadows 2.4.Literature: Maya Visual Effects: the innovator’s guide Eric Keller Ambient occlusion is the easy and quick way to get Global illumination and tell how ambient occlusion note works in texture. Ambient occlusion produce soft shadows as like real world. when two models are placed near certain amount of light will be block and u will get soft shadows at the corner of the object 2.5.Literature: Rendering with Mental ray 3Ds Max Joep Van Der Steen There are different types of shadow in 3ds max like normal 3ds max shadows and ray trace shadows .but normal shadows wont work in mental ray. If u need to get accurate shadows go for ray trace but render time will be increases when compare to normal shadows. Bounce light gives u realistically feel as like real life lighting. In real life light wont stop travel when its hits the ground it will hit and bounce for certain distance till its die and ambient occlusion also the one form of creating bounce light or indirect lighting for the scene but ambient occlusion wont be physically correct lighting when compare to FG(Final Gathering ) and GI (Globule illumination ). Ambient occlusion give reflective occlusion where we wont get in normal occlusion. 2.6.Literature: Writing Mental ray shader: perceptual Introduction Andy Kopra This book tells about how ambient occlusion rays are calculating in the scene and tell about how Technically ambient occlusion works in MEL scrip this book gives me clear idea how to develop my scrip in MEL 2.7.Literature: Rendering Techniques 2006 Tomas Akenine-Mà ¶ller   Ambient occlusion shadow produce form ambient light. Ambient light emits form all direction and produce soft shadows. Most of the production companies using ambient occlusion for lighting for time saving in lighting and rendering. 2.8.Literature: Maya: secrets of the pros John L. Kundert-Gibbs, Dariush Derakhshani Ambient occlusion techniques in production are used in two ways are backing of ambient occlusion texture and taking of ambient occlusion passes in render. In backing of ambient occlusion we cant tweak while compositing but In ambient occlusion render pass we can tweak and bring new effect in compositing. 2.9.DVD:Digital Tutors Mental Ray Nodes Library This Tutor helps me what are the uses of the ambient occlusion how to connect ambient occlusion texture node in shader and explain clearly about the Attribute Editor of ambient occlusion to get good output. Chapter3 METHODOLOGY This document consists of a quantitative and qualitative method by Survey and gathering information from Internet, Books, tutorials , articles, books, paper and videos. 3.1.POPULATION: The people who are suitable for this population is texturing artist, lighting artist, rendering artist. They were questioned regarding the ambient occlusion shader and its uses in production field. The population of this research work carries the production experienced person. 3.2.SAMPLING: Judgment Sampling 3.3.SCOPE AND LIMITATIONS: This research is limited to the ambient occlusion shader. Chapter 4 Lights in CG 4.1 Overview 4.2 Types of lighting Chapter 5 Indirect lighting in CG 5.1Introduction 5.2 Final Gathering (FG) and Global illumination (GI) Chapter6 Ambient occlusion 6.1 overview 6.2 How it works 6.3 Advantages of ambient occlusion Chapter 7 Rendering 7.1 Mental Ray rendering 7.2 occlusion render over mental ray Chapter 8 MEL 8.1 Introduction to MEL 8.2 Creating GUI Chapter 4 Lights in CG 4.1.Introduction Lightning in computer graphics (CG) is nothing but giving special effects to the scenes to improve the quality of animation. Lightings available for all kind of occasions, all we need to do is just adjust the parameters. Most of them will not give more importance for lighting while creating there images or animations. Lighting plays very important role in computer graphics (CG), we can easily find the talented and untalented person in computer graphics (CG) by looking at the light effects given in the image or animation .Though we already know something about lightings in photography, film and video. We are just trying to bring the reality to computer graphics (CG). Lighting is used for creating a 3D effect by differentiating the foreground from background or else we can combine both to create 2D effect. This effect (Lighting) is mainly used to impress the viewer. Lighting is the most powerful tool in the computer graphics because this is the only tool which makes the viewer to feel. If your lighting perfectly fits for your image or animation then the final output will be much good to impress the viewer. Lighting can be expressed in two ways by being illuminated and a process of illumination. Lighting is defined globally by means of object which can be visible through the source illuminant application. Bouncing off lights or shiny objects can be made by the manipulation of light. If natural light is unavailable artificial lights can be used instead. Lighting is used everywhere and anywhere. Light is never said to be the same because of its variability, so lighting also changes. The natural sun light that we see in day to day life varies in a short period of time but the quality does not vary. The term state of lighting could in term mean intensity, its direction, its texture and form. This means something emotional. lighting is also a process of purposeful planning and design in which the light is to illuminate in an object. When lighting is necessary, the ligh ting position and placement are to be in considering, once deciding the intensity. Lighting process also refers in analyzing the light quality as it strikes the subject. 4.1.ADDING LIGHT SOURCES: Adding lights to the scenes can be done in several ways and also different kinds of lights available in lighting effects. Some kind of lights are used to highlight the background, foreground, character etc., we must choose the light which is highly suitable for the cases so that the people could not able to find which effect is used. There are several types of adding lights effects available POINT(OMMIDERECTIONAL)LIGHTS SPOTLIGHTS DIRECTIONAL LIGHTS AREA LIGHTS Site accessed on 27th sep Pixel Cinematography: A Lighting Approach for Computer Graphics (SIGGRAPH 96 Course 30) SPHERICAL AREA LIGHTS FLAT AREA LIGHTS LINEAR LIGHTS MODELS SERVING AS LIGHTS 4.2.1POINT(OMMIDERECTIONAL)LIGHTS Point lights are also called as omni or omnidirectional lights, because it transmit in all directions, like any other lights e.g. bulb, sun etc The main thing in giving this effect is checking the shadows it should not spread in all directions. In real life, u can see more uniformly omnidirectional lights. Most of the times point lights are similar to real light bulbs for example, bulb lights spread allover the particular empty place, if a opaque thing (metal, wood etc.,) is kept in that place the shade will form behind that thing and side and size of the shade is depend on the location of the bulb. Though it is likely as omnidirectional we can spread it by using throw-pattern that is uneven. if you want to focus more light on some particular direction then you must do this action texture map to the light else by grouping the light with 3D object that produce shadows This light rays stimulated out from one infinitely small point in space, Its illumination and shadows passes out form the light in all direction. It is difficult to find a light which is uniformly omni directional in nature. Many light sources emit some amount of light in some directions. Uneven point lights can be used as a throw pattern, like a real bulb to emit more light in some direction rather than in other direction. This is done by applying a texture to the light or else by grouping the light with the 3d object which will cast shadows. 4.2.2.SPOTLIGHTS: Spotlights is the major light effect which is commonly used in computer graphics (CG).This light effect is used by major computer graphics (CG) specialist because it can be used to focus on a specific target. Spotlight is also similar to point light sometimes but it slightly differs in pointing the target there are some limitations for spotlights are it should not exceed.we can determine the focus aim by rotating the spotlight. You can also fix a target for your focus so that the focus will always on that particular target. Spot Lights are the most used light in the lighting design of computer graphics. Most of the popular artist prefer spotlights to light a scene because, this light can be controlled in any times to aim light at a selected target. The emition of spotlight is light radiation from a point, same as like the point light. The illumination in the spotlight is controlled through a cone angle or a beam of the light. The rotation of the spotlight will determine where the beam is aimed. Objects can also be linked to light to stay in the same orientation position. A spotlight has more controls and options which is not found in other type of lights, some options like projecting a image map from the light, creating fog, etc†¦ With the help of spotlight the falloff which is the softness of the cone, allows the intensity of light diminish more gradually in the edges of the beam. 4.2.3.Directional Lights Directional light is an infinity source of illumination from a distance. These lights are variously known as distant, direct or infinite light. This light sets a single vector for its entire illumination object from the same angle, doesn’t matter the object’s position. The shadows emitted by the directional light are in same direction and they are orthogonal projections of each 3d object’s shape. The matter in placing the directional light is which way it’s pointed. The directional light is not so easy in aiming to a preferred local area like point and spot light. A set of lights constituting from different angles can be used to produce fill light, even in the individual lights in all angles in a low intensity. These lights can fill very large areas with illumination appearing as ambient, like filling the daylight from the sky giving a quick effective global ambience. it deals with the light position where it is placed and it is all about the direction of the object, shadow and lit falls depend on the light location. However the sunlight is the major source of light we need some more light effects to impress the viewer most probably directional light is used. The directional light which needs some specific angle to present a proper lighting so that the person should concentrate more on angles. 4.2.4.Area Lights The lights like point and spot emits light from a infinity source into space, which is not simulating the size of physical light source in real life. Point light cannot be scaled in any dimension. To get more accurate simulations of the real light, this area light have definable scale, so the all the rays of light are not emitted exactly from the same point. If the light is scaled small, the illumination will appear similar to a point light. The larger scale of area light, make the light appear softer, shadows appears to soft and the illumination in nearby objects. The amount of shadows and light achieved with area light makes the scene excellent in realistic rendering. The source of the light comes from some long gap like windows etc, is said to be area lights. This effect is important when the image or animation dealing with the room setup for example if there is a room there might be some windows so we must implement the area lights. It matches the situation than any other lighting techniques 4.2.5.SPHERICAL AREA LIGHTS: Spherical area light is also like area light it will spread in all directions. It is also called spherical light, spherical region of space is the source for the spherical light, this is mainly used in the case where the large light source. The spherical light has omni directional so the light does not have effect on our output. you can also replace the spherical light to point light when the illumination needs more concentration on light to cast soft edged shadows 4.2.6.FLAT AREA LIGHTS: Area light also available in flat shapes such as discs and rectangles. Light emitted from two dimensional areas can use less rendering time than three dimensional areas. The number of samples used to adjustable either approach. A rectangular area light is same as illuminated ceiling panel, a plane width and height that illuminates with naturally soft, diffused light. Light from ceiling is the major use of flat area light simulating the reflected illumination brightly lit walls and ceiling providing a soft. Aiming or rotating light changes your result, light from the edge of the flat area light is same as creating sharper shadow and also dimmer. 4.2.7.LINEAR LIGHTS: Linear light has same functionality as florescent tube and also scaled in one-dimension.it has a length soften the shadows and extend its illumination in one direction. How linear light affects the output. The shadow objects along the length of the light are very soft, but shadows from the end of the light are focused. We can use linear lights from fluorescent tubes, laser blasts. Line shape is not specifically needed, linear lights and it is used for general soft lighting scene they will not add as much as you’re rendering time as other types. It is similar as spherical area light . 4.2.8.MODELS SERVING AS LIGHTS: Light effect by model serving as lights is a 3dimensional model in your scene sort of area light source. By using this model we can make a nontraditional shape of light like neon sign, it is also used as a true light sources, as shown in figure. However, bright looking objects can be made by rendering the neon sign,and also by positioning other kind of light to the surface rounding area. Chapter 5 Indirect lighting in CG 5.1Introduction The indirect illumination simulates caustics, global illumination and final gathering.the specification of light energy is required. To allow color the light energy is as a RGB triple. But the values of the RGB are usually much higher than the range for color. In the preprocessing step the number of photons stored from the light source is determined by STORE and the number of photons emitted is determined by EMIT. The photon emission stops when either of the limit is reached. Using the power law of 1/r(exp) energy from the light source decreases as the square of the distance increases from the source. The physical correctness is lost when the exponent is other than 2. During caustics preprocessing The number of caustics photon stored can be specified by the caustic photon value which controls it. Likewise global photon value can be specified for global illumination. The value ranges from 10,000to 100,000.by increasing the value the accuracy increases and the bluriness decreases. In i ndirect lighting the lights sources are invisible by default. As the number of visible lights are increased the performance is reduces. 5.2 Final Gathering (FG) The estimation of global illumination is done by a technique called Final gathering. It can be illuminated by either sampling a number of direction over the hemisphere or by averaging the total final gather points nearby. To improve the quality of global illumination final gathering is used. Without final gathering computation on a diffused surface is made by the photon intensity near that point. With final gathering the new rays of light is are made to hit the sample hemisphere for the determination of incident illumination. Using illumination from the globillium photon map and the illumination at the points of diffused surface is computed. Some rays hit a specular surface and their contribution for final gather color is zero. Tracing each ray utilizes lot of time so it is done when it is necessary. For purely diffuse scene final gathering eliminates low frequency noise and dark corners. As the final gather averages over many values of direct illumination fewer photons are needed. F inal gathering can support only a single bounce. And multiple effect have far less impact on the image. The final gathering can perform these if the shaders can adjust the trace depth, otherwise it will be performed by photons by default. To control the photons coming from distant source of light final gathering is used and is good for film production. For CAD related applications photon mapping is used. Final gathering can be turned on or off in the options. In each final gathering the number of ray shot can be changed. The maximum distance at which the ray can be used depends on the scene extent. Decreasing the scene extent can reduce the noise but increase the render time. 5.2.1.Global illumination: Global illumination simulates the light bouncing of an object. It has two steps process. the photon emitting light emits photon in to the scene. A photon map is created to store the intensity and place of the photon in three dimensional space. Then the surfaces are illuminated. It is based on the intensity of the photon. In global illumination diffusive value is a must. In the second part of the image the actual process is rendering of the image. The energy value is averaged and these values are interpolated to get the image as the light is bouncing of the diffused surface. After perfecting the in this method, the photon map can be saved and reused. Thus we can save the time of rendering each frame, provided the scene is static. This is the calculation of more complete light transfer model said to be global illumination. This accounts for the indirect reflected light transfer in the scene. There are two types of global illumination, one simulates the behavior of the light of perfect specular light, and the second behaves in perfect diffuse light. These are most commonly referred to ideal specular, which hold ray tracing. Perfect diffuse reflections are called an ideal diffuse reflection, which is calculated using radiosity. This technique was developed in enhancing the realism in computer images in mimicking the light transfer. In periods it developed like image synthesis (photorealism) to simulation (photo accuracy). The radiosity is computed first and the ray tracer is computed to calculate the direct illumination the same way the reflection and refraction. 5.2.3.Local Illumination This is the direct illumination from a light source, this means a method of lighting which come form the direct visible source. This will not take full light in account; it only shows how the light affects the object that it calculates in the scene. Local illumination neglects the reflections and light propagations as its’ bounced around the environment. The light transfer simulation in local illumination computes the light only produced from its light source itself to the object that it illuminates and stops there. In a sense an incomplete light transfer’s model because it computes only the effect of direct light and cheats by the environmental lighting settings as glow to make it as reflected.[9][10] Local and Global 5.2.4.Ambient Light This is a light with constant intensity setting on the scene which serves as the sum of all in the direct illumination reflections in the scene. When describing this in effect ambient light is a kind of self-glowing illumination that mimics the object-to object light reflection. It is an independent intensity for all the objects in the scene. This light was invented to fake the direct illumination interobject reflection so the image will not be dark. This setting is adjusted globally through a scene parameter or per object. The preferable setting for ambient light in most scenes in set to be zero or low unless the object is producing light. This setting makes the fill light and the secondary lights influence in your scene more visible. Site accessed on 19th oct [http://:jmsoler.free.fr//tutor/lumiere_cornell_en.htm] Chapter 6 Ambient occlusion 6.1.Overview: Ambient Occlusion is a lighting technique that which is used to cast shadows on objects. This is a technique used in lighting which is misunderstood as this method casts shadows on objects where light does not reach. Ambient occlusion creates or casts soft shadows around the object which gives out a molded look. In technical terms ambient occlusion is a global illumination method and is commonly referred to as a cheap trick for alternative method of global lighting method. This technique is to get ambient light in all contacted shadows. This is where ambient occlusion comes into being as some calculate the intensity of the light setup for every work file but most don’t and the best way to overcome is to use ambient occlusion where this does all the calculation and gives a better quality render more than we can accept. 6.2.How ambient occlusion works: Ambient occlusion is a technique which adds visual realism to the image without being physically correct. The ambient occlusion result can be used to darken concave areas, which human eye perceives as indirect illumination shadows, or  contact shadows. The advantage of ambient occlusion is its computational speed. As it may be computed with very short rays and as no additional shader evaluations are required, the performance may be significantly higher than for  final gathering. 6.3.Ambient occlusion gains render time: Ambient occlusion is enabled by default. However, no actual computations will happen until requested by further settings or by shaders. The ambient occlusion cache is set  off  by default. In this mode, only shaders which  call for ambient occlusion  values will initiate computation on demand. If no such shaders exist in the scene, there is no overhead compared scenes rendered with ambient occlusion turned off. In case the ambient occlusion caching is enabled then mental ray will perform some computations before rendering starts, to fill the cache. The global defaults for ambient occlusion settings can be specified as  scene options  or on the mental ray  command line. Most of these values can be overwritten by a shader. The  ambient occlusion caching  may be enabled for the current rendering to gain overall speed. In this case, several preprocess passes will be computed. In the first pass, some ambient occlusion points are created on a coarse grid. Subsequent passes refine the grid adaptively. The density of the grid is determined by the  ambient occlusion cache density  setting which gives the  upper bound to the number of ambient occlusion points per pixel. Site accessed on 19th oct http://download.autodesk.com/us/maya/2009help/mr/manual/ao.html 6.4.Results better than indirect light: Ambient occlusion is the easy and quick way to get Global illumination and tell how ambient occlusion note works in texture. Ambient occlusion produce soft shadows as like real world. when two models are placed near certain amount of light will be block and u will get soft shadows at the corner of the object Ambient occlusion adding realism and produce more details in the output and render will be fast when we compare to Final gathering and Globule illumination Ambient occlusion refers to a type of shadowing that occurs when the ambient light in an environment is occluded (blocked) from reaching a surface by other nearby objects or other parts of the same object. You can see ambient occlusion effects in the photograph .The darkness that occurs in the cracks and crevices in the plaster design on an overcast day are a perfect example of ambient occlusion. Ambient occlusion effects are seen in many renders created using Final Gathering. that the ambient occlusion that occurs in a Final Gathering render lacks a certain amount of detail. Unless you increase the number of Final Gathering rays, detailed ambient occlusion shadows are difficult to achieve, and the more rays you emit into a scene, the longer the render time will be. This latter method is the most common approach and offers the most flexibility: the occlusion pass can easily be modified in the compositing software. Eliminating the need to re-render the entire scene if a change needs to be made. In this way you can use the ambient occlusion texture to augment the shadowing of a render pass that uses Final Gathering or as a substitute for rendering with Final Gathering Literature: Mental ray for Maya 3ds max and XSI Livny Boaz Literature: Maya Visual Effects: the innovator’s guide Eric Keller Literature: Mastering maya 2009- Eric Keller Chapter 7 Rendering 7.1 Mental Ray rendering Mental ray rendering is capable of producing a realistic and quality image. It can render just with a single processor machine. It is achieved by advanced and proprietary acceleration technique. It achieves better performance using parallelism on multi processor machine and also on network machines. Mental ray can be used on wide range of application, such as in full length movies, games, architectural design and on virtual models. Mental ray rendering is used as a standalone application for efficient rendering on local machines and as a software library on 3D content creation and CAD systems. Mental ray has a number of standard shaders which range from basic illumination to typical materials for architectural and design, car paint to physical sun and sky lighting. Mental ray has a built-in standard models for best rendering performance and quality cover. 7.2.Rendering Ray tracing is an option on mental ray. Ray tracing is used for rendering very complex lighting. Ray tracing software is based on ray tracing architecture which allows for the flexible implementation of lighting effect. It includes reflection, global illumination, refraction. To speed up the ray intersection calculation it uses advanced tree algorithms. From an on-demand loading of geometry it can adjust to dynamic scene manipulation. Ray trace is used to produce shadows of an object. Without the ray trace is turned on there will be no shadows. In ray tracing, the light path is tr