Leadership Style Essay Example for Free

Leadership Style Essay The main focus of any organization is viability or productivity (Mastrangelo, Eddy and Lorenzet, 2004). This is further heightened by the increasing changes in product market activities (Chartered Institute of Personnel and Development (CIPD), 2001). The fact that consumers now have a better and affordable access to market information has brought about an increase in their market power and the resultant effect is a more challenging and competitive market especially in the private sector. The public sector on the other hand is under increasing pressure for a more effective utilization of public funds. Consequently, the quest for a competitive advantage and increasingly better performance is becoming a major factor for consideration in virtually all organizations. In this light, the CIPD (2001) emphasized on the role of leadership as a major factor essential for an enhanced organizational performance. Taormina (2008) supported this in stating that in leadership is vested the ability to decide how organizations will be run and it plays a major role in influencing the organization to success. The CIPD (2001) further added that leadership (or people management) is the main element harnessing other success factors in an organization for effectiveness. A number of authors have also supported the foregoing discussions on the leader-success relationship (e. g Harris and Kuhnert 2008; Mastrangelo, Eddy and Lorenzet, 2004). Furthermore, research works have identified certain pointers to high performance leadership. A major one among these is leadership behavior or leadership style (Mastrangelo, Eddy and Lorenzet, 2004; Taormina, 2008). Leadership Style and Organizational Success: Drawing a Correlation Leadership style is one of the major traits that may be used to draw a line of difference between high performance and low performance organizations (Adeyemi-Bello, 2001). Since the management in an organization has a great impact on how it will be run, the style of leadership within the management cycle has a way of dictating the direction that such an organization will go. Taormina (2008) buttressed this point in his work. He established the fact that leadership behavior go along way in determining the culture or the prevailing atmosphere in an organization and this will in turn affect employees’ attitude towards performance and ultimate success of such an organization. A number of dichotomies on leadership behavior have been presented. However, leadership style can be broadly categorized into two – ‘People-Centered’ leadership and ‘Task-Centered’ leadership (Adeyemi-Bello, 2001 pg 150; Taormina, 2008 pg. 87). ‘People-Centered’ leadership Versus ‘Task-Centered’ leadership Various progressive attempts have been made at investigating leadership from the behavioral angle. However, a remarkable point was reached in the 1950s with the introduction of ‘Ohio State model’ which talked about ‘task-oriented’ and ‘people-oriented’ leadership (Taormina, 2008 pg. 87). These two categories seem to have been a perfect one that describes leadership behaviors because it is still being referred as at present. According to Adeyemi-Bello (2001), task-oriented style emphasizes on production and organizational goals. This leadership style is concerned about how the organizational goals may be implemented. People-oriented leaders on the other hand show great concern for the followers (Adeyemi-Bello, 2001). They create a warm environment within the organization and foster a strong positive relationship among members of the organization. While this style offers a system that respects the personality, feelings and opinions of the employees and gives them a feeling of empowerment (Taormina, 2008), task oriented approach is thirsty for achievements sometimes at all cost (Adeyemi-Bello, 2001). Subsequent studies after the initial presentation of these leadership models have made attempts at differentiating between them. The intention was to determine which one should be preferred above the other. However, Adeyemi-Bello (2001) explained that current researches have shown that preferences for any of the two styles depend on the current situation within the organization. There are cases where one style will fail to impact a good result, not because it is less effective but because the situation at hand does not create an environment conducive for its functionality (Mastrangelo, Eddy and Lorenzet, 2004). Furthermore, Jacques, Garger and Thomas (2008) remarked that the recent behavioral theory of leadership took the studies a step further by suggesting that the two behavioral approaches will be more effective when adequately blended under any given situation. Their paper revealed that graduates of project management performs better in leadership than those from another management related courses because of their ability to blend the two leadership styles; a training that the other group did not receive. Adeyemi-Bello (2001) had earlier presented this fact in her work. The result of her survey on 29 Baptist church leaders shows a better result when the two styles were combined in church leadership than when each one was singly adopted. She concluded for the extension of these results into leadership in other realms of human activities. The implications of these results are quite obvious. A paradigm shift in the content and delivery of leadership training programs has become very necessary. The current training inculcating strategic planning and tasks-focused practices should pave way for a more balanced approach in management training. People managers should also learn to engage in a better interpersonal relationship with those under them, create a warmer environment conducive for a healthy work relationship, and engage in strategies that will give employees a feeling of empowerment (Adeyemi-Bello, 2001; Monstarangelo, Eddy and Lorenzet, 2004; Taormina, 2008). The case of Kleine Plastics in the UK presented by Ludlow (1987) serves as a good example in driving home the points that has been raised so far (in Tyson and Kakabadse eds. ). The work contrasted between the leadership attributes of Joseph Kleine, the founder of Kleine Plastics and that of David, his son at a particular time during the early stages of the company’s development. It reviews Joseph Kleine’s attitude as ‘a charismatic leader with whom his managers and work force wish to identify’ (pg. 23). He engages a style that trusted and respected his employees and empathizes with their situations. To him, these people were his main assets. This, coupled with his result oriented tendencies, propelled the work force towards a high performance level. However, David Kleine could not maintain this approach when he had to stand in during his father’s absence. He wanted result at all cost without due regards for his team members. Objections to his propositions by his managers were downplayed no matter how genuine they may be. Though work was still progressing, enthusiasm and productivity level dwindled. The return of Joseph was welcomed with protests from every quarter. David style was found to be less effective because of its lack of ‘human face’. Conclusion Leadership style is an issue that will still continue to be a subject of interest among research workers. The world is ever changing and people are becoming increasingly dynamic in attitude and thinking. This calls for a leadership approach that will keep up with the pace of the changes. A dynamic leader is one that is better equipped to respond to changes and easily enlist the cooperation of people in managing them effectively towards a greater level of production performance.

Wine Manufacturing Processes in India

Wine Manufacturing Processes in India INTRODUCTION In India wine industry develop as a new emerging field. The consumption of wine in India is very large have a great economy. Due new emerging field wine industry have a lot of opportunity also have challenges to show your talent. Now in days servicing drinking of wine become status symbol. The challenges come out due to different rules taxation in each state of India. Each state government has their own rule taxation policy for wine business. The challenge also still occurs due to Indian culture tradition because servicing drinking of wine assume as a western culture so marketing of wine in domestic region become a hard challenge. Cost quality of wine firstly decide for business in domestic region. In urban area people accepted the western culture servicing of wine in parties vocation become style statement but to develop wine market in rural area is a big challenge because rural people assume as a bad tradition to drink wine. At the tourism places multicity like Mumbai, Delhi, Kolkata, Karnataka, Varanasi, Lucknow city in up many tourists comes they wants to drink fine good quality of wine so growth in tourism sector is correlated with growth of wine industry. In current scenario due to accepting western culture becoming style statement the market of alcoholic beverage changes globally. A lot of new market comes out redefining distribution method helping the wine market to reach the potential customer. In between last 10 year it has been seen that middle class people accepted the western culture contribute into the consumption of wine at a faster rate. Through the use of internet, television cinema drinking of wine increase widely all over India. Indian wine industry organizes many events club to getting the coverage of media to reach the people attract them for joining to the industry. This event organizes only for advertisement attracts huge number of customer. The product offered by vintner to the customer from regular brand in minimum affordable price. The growth rate of Indian market for wine industry is 25-30%. The researcher showing that 100 million people in next five year will be legally allowed to drink alcohol. In biotechnology field manufacturing of wine is done by the biological tools such as microbes bacteria. According to Indian market the cost of wine should be low quality must be fine this is the basic funda of biotechnology. The use of biological tools means to get brilliant quality quality means fitness for purpose so for a biotechnologist wine industry has a great opportunity good career. WINE MANUFACTURING Formation or manufacturing of wine is known as Vinification. Wine making process is ordinary categories into two groups one is still wine production i.e. without carbonation other second is sparkling wine production i.e. with carbonation. The wine making technology is known as Oenology wine maker is called Vintner. RAW MATERIALS FOR WINE PRODUCTION Grapes fruit, berries, apple many other sugar rich fruit are raw material for wine production. PROCESS OF WINE PRODUCTION Quality of wine is decided by selection of grape fruits. Good quality of grape means good quality of wine. Minerals nutrient in soil, its ph, weather, time of harvesting affects the quality of grape. Collectively these effects in the term of grape fruits are known as grape’s terroir. Grapes are growing in vineyard. Harvesting i.e. picking of grape for wine production from vineyard is done by mechanical or by hand. Mechanical harvesting take short time cover large area while hand harvesting take more time but the advantage of hand harvesting is that we can pick only ripe cluster of grape. Vitis vinifera species of grape is more preferable for wine production. FORMULATION OF MUST OR PULP Squeezing is next process after the selection of grape. Grape fruit squeeze normally by which the content of fruit release. The releasing content of grape is called must or pulp. In the vine industry vine made at a large scale so far squeezing is done by crusher known as destemmer.For the manufacturing of red vine stem from the bunches of grapes removed because these stem contains high tannin and give an undesirable smell. These smell is due to 2-Methoxy-3-isopropyl pyrazine.The color of red vine comes from skin of grape. On vini fera vines are the execption.It contains malvidin 3, 5-Diglucoside anthosyanin which is a dark pigment. White vine initiate without squeezing and avoid removing the skin. Avoid to removing skin is so for the flavor. Adding of potassium ion precipitate to the skin protein into the bitartrate which increases the pH of juice. In the production of rose vine grape fruits squeezed and dark skin left with must of grape for a long period to extract the desirable color of vine. BASIC FERMENTATION On the surface of grapes yeast are present in the white powdery form. These are the natural yeast and basic fermentation is done by natural yeast. In the basic fermentation one problem occur that some sugar of grape must remains unfermented. This unfermented sugar makes vine sweet so culture yeast are often added into yeast. Yeast ferments the sugar into alcohol and CO2 . Temperature affects the rate of fermentation. For red vine production temperature should be 22-25 C* and for white wine 15-18 C*. From one gram of sugar half gram of alcohol is produce so far to get 8% concentration of alcohol most should be contains 16% concentration of sugar. After Basic fermentation secondary or malolactic fermentation start. This process is done by lactic acid bacteria. STABILZATION OF WINE There are two processes for stabilization or clarification of wine. Cold Stabilization – This process is used for remove to tartrate crystal. This tartrate crystal is formed by adjoining of tartaric acid and potassium ion. This crystal appears as clear sand in the wine. These are known as wine crystal or wine diamond. For the separating of this crystal the temperature of wine decreases at the freezing level and put it for one to two weeks. By this process crystal stick on the wall of the holding vessels. Wine is ejected from the vessels and crystal left behind it. Heat Stabilization – For the removing of unstable protein from wine heat stabilization is done. Heat stabilization prevents the precipitation of this protein. SECONDARY OR MALOLACTIC FERMENTATION Lactic acid bacteria (LAB) are responsible for the malolactic fermentation. To shape the wine from the oxidation it kept in air lock system. Secondary fermentation takes places in large steel vessels. Wine also kept in oak barrel. For the desirable change in test, Wine put in to oak barrel. One is notable that use of LAB cans undesirable change in the flavor of wine which is undesirable. Types of lactic acid bacteria LAB— Leconostoc Pediococus Lacttobasilus These are gram +ve bacteria, Wine LAB are microaerophili i.e these bacteria can grow in low O2 containing material. Due to their microaerophilic nature they catalyzes whole sugar, acid and other material present In container of wine that is not only at the surface of container, SOURCE OF LAB The main source of LAB is layer of grape fruit and grape leaves. Contaminated equipment as like pumps, walves and storage container wooden barrels are also the source of LAB. At the stage of alcoholic fermentation population of LAB decreases because yeast competes with this bacteria and form ethylalcohol and SO2. At the period of fermentation number of LAB increases rapidly and reaches up to 106 to 108 cell/ml. Generally leuconostoc grow in this condition and carry out malolactic fermentation but when pH of wine is high that is 3.5, pediococcus and lactobasillus also carry the malolactic fermentation. When the pH of wine is more than 3.5 and sulpherdioxide level is insufficient fluff causing LAB develop into the wine and wine become bubble. After the malolactic fermentation wine should be preserved very carefully. DIFFERENT WAY OF SPOILAGE (BUBBLING) OF WINE BY LAB Sugar Fermentation – Malolactic fermentation done by LAB. LAB catalyzes to sugars like glucose and fructose into lactic acid and CH3COOH. The vinegar like smell comes out due to acetic acid. This is the reason for bubbling of wine and takes places in must with fast fermentation or with high concentration of sugar in wine. Due to fermentation lactic and acetic acid decreases the pH of wine and resulting low growth of microorganism. Glycerol Degradation – LAB catalyzes glycerol into lactic acid, acetic acid and acrolein. Due to presence of acrolein test of wine become bitter. Tartaric Acid Fermentation – Tartaric acid are fermented into lactic acid, acetic acid % CO2 by LAB. This is done at low acidity and high pH. This acidity further catalyzes and vinegar likes aroma and bad test. Citric Acid Fermentation – Amount of citric acid decreases in wine at time of fermentation. This amount is depending on type of LAB and pH of wine. Ropiness – Some specific genera of leuconostoc produces dextran slime and musilaginous substance and resulting wine appears oily and do not have high volatile acidity. The very bad smelling of wine s due to lactic spoilage and known as mousy and geranium like aroma. The mousy aroma in wine is due to formation of acetyl tetrahdyropyridine. Lactobacillus is responsible for production of these compound. Geranium like aroma in wine is produced by formation of 2-ethoxyhexa-3, 5-diene from the catalyzing of sorbic acid by the LAB. Presence of this compound, wine become undrinkable. To prevent this aroma from wine growth of LAB must be handled. METHOD OF PREVENTION OF WINE SPOILAGE For the prevention of wine spoilage 3 factors are responsible. Composition of wine/must Practices of vinification Interrelationship with other organism Composition of wine/must – The growth of LAB is affected by the pH of wine. The Initiation and duration of malolactic fermentation is affected by the pH of wine. Growth of LAB and malolactic character is also determined by the pH of wine. According to researches malolactic fermentation decreases with increase in pH. The research report show that at pH 3.15 malolactic fermentation take 23.4 weeks while at pH 3.84.This process complete in 2 weeks.pH pf must also decide the type of LAB for malolactic fermentation. At below 3.5 pH, malolactic fermentation is done by leuconostoc and at above 3.5 pH pediococcus and lactobacillus carry out the malolactic fermentation. Controlling the pH of wine is best method for preventing from spoilng. For controlling the growth of harmful bacteria SulpherDioxide is uses. It’s a very effective germicid. In wine sulpherdioxide exist as free or bound form. It affect the pH of wine. The free from of sulpherdioxide is increases by decreases in pH of wine, so maintaining low pH of wine is profitable. In forming sulpherdioxide which is most effective tool for controlling the LAB. Sulpherdioxide bound with certain carbonyl compound like acetyldehide. This form of sulpherdioxide is known as bound sulpherdioxide. When LAB catalyzes this carbonyl compound sulpherdioxide releasea and works as free sulpherdioxide.which restricted the growth of bacteria. The molecular sulpherdioxide at the concentration 0.8ppm works very effectively to controlling the growth of LAB. Lactobacillus trichods and alcoholic bacteria which contains 20% alcohol. pH and storage temperature of wine determine the tolerance of wine. As before describe that due to microareophilic nature of LAB oxyzen does not require for the growth of LAB but the evidence show that small amount of oxyzen is require for well growth of LAB. Carbondioxide also influences growth of LAB. PRACTICES OF VINIFICATION Many condition like fruit condition, clarification, fermainting conditions, must treatment, lease contact, skin contact tme(in case of red vine) and winery hygine use for controlling of LAB, Use of fresh clean and healthy fruits for wine making reduce the number of microbes. Sulpherdioxide is added at crushing time to reduce the high growth of LAB. The pH and acidity of wine can be adjusted by use of tartaric acid before fermentation. At the time of stuck fermentation LAB fermented to sugar compound and increases the volatile acid level in wine. Before reaching at dryness of wine controlling of fermentation of wine is good method to preventing the growth of LAB. To put the fresh wine on te lease for a long time will be face down to malolactic fermentation. This is because of releasing nutrients by yeast and decreases carbondioxide concentration. Clarification means filtration of wine with very fine approximate 45 micron membrane filter to reduce the growth of LAB. INTER RELATIONSHIP WITH OTHER ORGANISM At time of alcoholic fermentation the growth of LAB in wine decreases or LAB do not perform very well because of presence of yeast which inhibitory effect on the LAB. The factor that affect the performance of LAB is competition consumption of nutrient by the yeast. Yeast is also form ethanol SO 2 which are inhibitory compound for LAB. Some other microorganism like Botrytis cineria acetic acid bacteria activate function of LAB. Acetic acid bacteria show symbiosis with LAB. Many researches show that Bacteriophage are isolated from wine ruin the LAB. DIRECTION FOR WINE MAKER Since LAB participate in malolactic fermentation wine spoil aging both so for some key points are mentioned for vintner to control the LAB. Always use fresh, healthy, high acidic fruit. Add few amount of SO2 at time crushing of grape fruit. Malolactic fermentation at the range of pH 3.3-3.5. This level of pH is most favorable for LAB to malolactic fermentation. Malolactic fermentation increases the pH so it is suggestible that ph of wine should be low by which after malolactic fermentation wine attain desirable pH. Low ethanol, low SO2 high temperature fermentation are favorable for malolactic fermentation. Take precaution to avoid a stuck fermentation. Fermentation by yeast for improving wine quality selected yeast are preferred by wine maker. Sacchromyces cerevisiae a commercial yeast are used for improving  wine quality. Volatile thioles are uses for changing smell of wine at cold temperature. New researches show that microbes present on the layer of grapes are varies from one vine yard to other vine yard. By the use of short amplicon sequencing technique(a dna sequencing technique) researcher determines the varieties of unique microbes present on surface of grape in a vine yard. If microbes like yeast and bacteria are determine of a vine yard ten use of bacteria and yeast for fermentation of particular vine yard grape by which quality of wine can be improved.

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

Morality of Population Control of Bangladesh Essay -- Bangladesh World

Morality of Population Control of Bangladesh ABSTRACT: The rapid rate of population growth in the last half of the present century causes anxiety about the future of humanity because the amount of resources needed to satisfy basic necessities is extremely large. Correspondingly, the satisfaction of basic needs cannot be the sole criterion of the good life. Human beings have a right to live a life composed of things that make life go best. The case of Bangladesh shows that the majority of people live a life barely worth living, a life morally undesirable. One major reason is the rapid increase in population. Bangladesh covers an area slightly less than that of the state of Illinois, but has a population that is roughly half of the total population of the United States. The quality of life is inexorably linked to population growth. Further, human welfare and the quality of life are closely linked to the availability of resources. Rapid increases in population growth reduces resource availability and often degrades the environment . At some point, regulation is needed to limit population growth in Bangladesh in order to maximize opportunities for living worthwhile lives both by present as well as future generations. I develop a moral viewpoint that justifies population control in Bangladesh. Bangladesh is one of the least developed countries of the world. Rapid increase of population causes government to declare it as the number one problem and major impediment to economic development and progress. With an area of 1,47,570 sq km — a size little less than that of the state of Illinois, USA the country’s population has almost tripled to the present 125 million from the 1951 figure. In education, health and housing sectors, the ... ...tab, F.U. and Karim, Z, "Population and Agricultural Land Use: Towards a Sustainable Food Production System in Bangladesh" in Ambio Vol 21, No. 1, Feb 1990, p-50. (9) These rights are stated in the unofficial document of the Untied Nations Preparatory Committee for the International Conference on Population and Development, pp:11-12. (10) Cf. Hartmann, B, Reproductive Rights and Wrongs: The Global Policies of Population Control and Contraceptive Choice, Harper and Row; New York, 1987. (11) Parfit, D, "On Doing the Best for Our Children", in Ethics and Population ed. Bayles, M.D., Schenkman Publishing Co. Inc., Cambridge, Mass, 1976; pp:100-115. (12) Vide. Kavka, G.S., "The Paradox of Future Individuals", in Philosophy and Public Affairs, Vol 11, No-2., 1981; pp-93-113. (13) Parfit, "Overpopulation", pp-145-164. (14) Parfit, "Overpopulation", p:146.

Alexander The Great :: essays research papers

Alexander the Great(Alexander III) (356-323 BC) â€Å"My son, ask for thyself another kingdom, for that which I leave is too small for thee.† (King Philip of Macedonia, 339 BC) From victory to victory, from triumph to triumph Alexander created an empire that marked history and brought him eternal glory. Alexander brought Greek ideas, culture and mentality to the conquered countries and assured expansion and domination of the Hellenistic Culture which together with the Roman Civilization and Christianity presents the fundaments of what is now called Western Civilization. -Born in Pella, Macedonia, 356 BC, parents were Olympias and Philip II (legends of Alex having gods for parents: Zeus and Olympias) Olympias supposedly is an ancestor of Achilles, While Philip’s is Hercules 12 yrs old: only child able to tame horse Buecephalus(Ox head), who would later carry him in all his conquests until his death in India(city of Buecephala) 13-16 yrs old taught by Aristotle 340 BC Philip goes on expedition to Byzantium, leaves Alexander, prince regent to rule Macedonia. During this time, Alexander conquered the Maedi, a troublesome Thracian tribe. Made Alexandropolis 337 BC Philip II is assassinated; Alexander takes over, not all approve of him -Only half Macedonian -Did not care, and proceeded to kill all allegedly linked to father’s murder 335 BC takes Thebes 334-333 BC Phrygia- cuts Gordian knot, which could only be undone by the man who was to rule Asia. Battle of Issus- Victory- Crushes Darius II of Persia Darius flees- left behind entire family, and tent filled with 3000 talents of gold (today in U.S.- 1.2 billion $) gains most of western Asia Minor 332- reaches Egypt, Egypt welcomes him as their great liberator Founded Alexandria 331- Battle of Arbela- crushed Darius again, Babylon recognizes Alexander as King of Asia Alexander enters Susa and Persepolis uncontested 329-328- defeated Scythians(nomads who had murdered Macedonians) at Jaxartes 327-326 Invasion of India – capture of Porus

Global Forces of Change Essay

1. From the case facts, describe how globalization and technology have influenced the business directions of GE Medical Systems. Technology Since new requirements in healthcare business had been emerged, in the market it is required to implement personalized medicine to support specific client – not mass population. Moreover, trend on find the way to prevent sickness is more concerned than to heal. This is massive challenge to medical equipment manufacturers whether which company can find the best technology to support these requirements. GE believed that the best technology would always win in the marketplace so they responded to these requirements by investing more on R&D and also product design. As the result, corporate R&D invented some new products which replace need of existing product, for example, digital detectors for X-ray machines that would replace the need for X-ray film. Globalization Globalization increases connectivity and interdependence of the world’s markets and businesses. Emerging middle-classes of Asia, Eastern Europe and Latin America is also an opportunity for healthcare company like GE to expand their markets, increase sales and profits. Beside of sales side, GE can also reduce their manufacturing cost by shifting manufacturing from high-cost countries to low-cost countries. This would increase their competitive advantage. 2. Identify possible projects by which a company dealing in Healthcare and Medical Diagnosis like GEMS can profitably ride the waves of globalization, liberalization and technology. * Shifting manufacturing base from high-cost countries to low-cost countries in order to reduce production cost. * To develop healthcare IT system, this is to manage necessary data systematically such as patient data, treatment record etc. This is also helpful for diagnosis. * To apply Free Trade Agreement with emerging countries in order to facilitate access of healthcare products. * Even general needs of customers in healthcare in each country is same but there are some specific requirements which are required individually so GEMS should not neglect R&D in each local market. Hiring local staffs is an effective alternative since local people might understand needs in their society well. * R&D is vital since technology changes every day. GEMS should keep investing on find out the way to increase effective ness of their equipment and also invent new products which can replace existing one. 3. Describe the world do you envision in 2050, especially with China and India likely to take center-stage? Touch on the economic, political, social and cultural adaptation that you think can take place. According to many reports show that over the next 50 years China and then India’s economies will overtake US. Large and growing market opportunities in China and India are widely seen and understood as evidenced by the large flows of foreign direct investment to China, both for the domestic market, but also to use China as a low cost platform for exports to the rest of the World. China is communist. Due to their political characteristics, control in a repressive way substantial part of the economy, especially the financial sector that brought about massive imbalance. A centralized decision-making process, although discretionary would presumably ease political action by by-passing all types of necessary approvals from a parliament or congress in a democratic system. So changing of Chinese government would possibly change the world. About social and culture, as foreign companies would base their manufacturing in China, learning local culture would be very important in order to have smooth operation and avoid any conflict. China language will become as vital as English. On the other hands, due to growing of China economic dominance, Chinese people will also spread over the world. Their culture will unavoidably absorb to everywhere. We have no choice but adapt with it.

General Electric

Factors affecting Demand of Pepsi( Cold drink) (1)Changes in the Price (2)Changes in consumers’ Income spent on goods and services (3)Changes in the Tastes/Preferences of consumers for goods/services (4)Changes in the Prices of related goods and services: Substitutes and Complements 5) changes in interest rates and the general availability of credit. Many households finance consumption through borrowing. If interest rates rise, demand contracts for many goods and services; particularly housing. 6) Natural disasters (storms, hurricanes, earthquakes, tornadoes, floods etc) ) Advertising can have a market effect on demand. Indeed, producers of PEPSI that are close substitutes generally spend large amounts on advertising, reminding consumers that their product is †better† than the opposition's product. (Whether or not this is reality true, of course is another matter). 8) Seasonal changes. For example, demand for Cold drinks rises in warmer weather, and falls in the co lder months of the year. If price only changes, the demand curve for a good or service will not shift. Instead, there will be a movement along the demand curve.If price rises, demand will contract; less will be purchased in a given period of time. If price falls, demand will expand, and more will be bought in a given period of time. The demand curve will shift to the left or right, if other factors, other from price, change. Factors Affecting Supply Of a Product . * Expectation of future price * When producers expect higher prices in the future commodities, the tendency is to keep their goods and release them when the price rises. * ? Change in the price of related goods * Changes in the price of goods have a significant effect in the supply of such goods. Government subsidies * Subsidies or the financial aids/assistance given by the government reduces cost of production which encourages more supply. * Number of firms in the market * An increase in the number of firms in the market leads to an increase in supply of goods and services. Nature of elasticity in terms of Income The degree to which a demand for a good changes with respect to a change in income depends on whether the good is a necessity or a luxury. The demand for necessities will increase with income, but at a slower rate.This is because consumers, instead of buying more of only the necessity, will want to use their increased income to buy more of a luxury. During a period of increasing income, demand for luxury products tends to increase at a higher rate than the demand for necessities. Nature of elasticity in terms of Price Price elasticity of supply measures the relationship between change in quantity supplied and a change in price. If supply is elastic, producers can increase output without a rise in cost or a time delay If supply is inelastic, firms find it hard to change production in a given time period. Major competitors ;Type of market (structure) it competes in (give reasons as to your op inion) Major Competitor is COCA COLA and all other different Soft drinks made locally It competes in many products as compare to Coca cola its products are * Aquafina * Pepsi * Mountain Dew * Sierra Mist * Sobe * Lipton Brisk Tea * MUG Root Beer * Slice * Gatorade * Dole Juice * Tropicana Pepsi is purely a Monopoly One seller dominates the market with no close substitutes. Natural Monopoly – efficient production by a single supplier PRICING STRATEGY OF â€Å"PEPSI† In Pakistan Pepsi cola is being operated by Pakistan Beverages.Pepsi is available in the majority of  stores, outlets, restaurants, and hotels. It has a huge market of customers. Basically it is segmented for theyounger generation of Pakistan but because of its customized offerings it is being consumed by differentage groups in our society. The company has offered Pepsi in different quantities and prices in our market. Its market oriented statement is â€Å"Dare for more†Ã‚   PRICES QUANTITY 12 Rs25 0ml 20Rs 300ml 20 Rs500ml 40Rs1. 5 lit 55 Rs2. 25 lit. In our society Pepsi often reduces its prices during the holy month of Ramadan and at the time of Eid.In this way they adopt promotional pricing strategy. Even if you notice on their offerings they are using  product-line pricing strategy as they are offering different quantities with different amount of money. Indifferent sectors Pepsi have also adopted segmented pricing strategy as its prices are much higher in luxurious hotels and other sectors. Its main competitor is Coca-cola when it comes to soft-drinks. Coca-cola have also made various efforts through different pricing strategies and offerings but Pepsi have alsoresponded effectively towards their actions through initiating price cuts at the right time for example.In the month of Ramadan whenever Coca-cola reduces their prices Pepsi also responds through price cuts and then eventually after that period it rises its prices. However buyer’s reactions have not been much affected the company in the long-run. Pepsi have always operated their sales through promotional and  phsycological pricing strategy and the great example for this can be their recently offered deal which is 2. 25 litre in 50 Rs.