CMT3321 Coursework 1 Essay Example | Topics and Well Written Essays - 2500 words

CMT3321 Coursework 1 - Essay Example The game was designed and tested with an interactive technology and a prototype mobile. Finally, the paper confirms the hypothesis dealing with technology rich modeling because the children’s feedback dealt with the realized interaction, and aspects of social and play interactions were put in real context. Methodological studies in children and interaction fields have concentrated on how children are involved in the processes of design and ways that children can offer input on interaction designs. Prominent illustrations include the participatory mechanisms to design, early design methodologies, Mission from Mars, or mechanisms that involve children during evaluation of interactive products. Previous research studies have put less attention to the tools and methods of prototyping. This paper also considers the position in the children’s game design that supports interactions that are embodied, mostly those played by children outdoors together. The papers also summarize methodological techniques in the wider Human Computer Interaction field, explain the literature of game designs approaches the topic and specifies some challenges of the present design approaches when the game is designed. A crucial theme in Human Computer Interaction methodology is concerned with prototype fidelity. The term prototype is ambiguous at its best; ranging from paper prototype, functioning, sketches, and interactive products. Prototype is used in many phases in the process of design and in various roles; for designers to look into the design space as one of the communication instrument to convey information to other stakeholders and as an analysis tool in testing the concept with users. Paper prototyping is one way to explore the space of designs without incurring design costs and to come up with early user feedback on certain aspects of action design (Lewis & Bedson, 2009). Those who support paper prototyping have argued that the software

Burberry clothing Research Proposal Example | Topics and Well Written Essays - 1250 words

Burberry clothing - Research Proposal Example One of the companies that is fast establishing itself as a force in the market is Burberry Clothing Co. which is one of the most iconic British fashion firm. The company has been in existence for more than 5 decades, making its name as one of the most proffered clothing and general fashion company. With the advent of technology, the company has managed to create online shops from where it sells its products and reaches a number of its clients located in different parts of the world. This paper presents a marketing plan that can be used by the company in reaching its new target markets and expanding its market share. Burberry Clothing, in its new approach to the targeted markets is supposed to ensure that it makes a proper description and analysis of its markets as it rolls out its products. For instance, the company often makes clothes that fit the different people that it serves; it has clothes for men, women, children and even the old people. This is a important attribute considering that clothes and fashion are products that can be consumed by all groups of people in the market. Perhaps what the company needs to realise is the different composition of these targeted populations in terms of their demographic factors. In terms of their geography, the company will have to put in place excellent mechanisms that will enable it bridge the aspects of place utility (Greenwood 76). In this regard, the company needs to establish distribution centers in strategic places that it will find effective to enable it reach its products to those markets as soon as they are needed. The company needs to have an understanding of its clients’ needs and demands so that it can meet them effectively, for instance, some people have different purchasing behaviors that are identified from their purchase preferences. Having this understanding will enable the company to reach and consolidate its markets in the best way that will give

Thermodynamics Field Can Contribute Our Daily Life Philosophy Essay

Thermodynamics Field Can Contribute Our Daily Life Philosophy Essay The research report will describe that what is thermodynamics. What are the advantage of thermodynamics. How thermodynamics will make our life easy. The research report will show different branches of thermodynamics and how it works. The report will also highlight some histories of thermodynamics .On the other hand, there are some analysis and facts relating with our daily life easier and more efficient. Justification The main reason for choosing this report is because Im interested in the thermodynamics, which is our daily exposure. I also want to specify my study in thermodynamics, which is major branch of my study which in mechanical engineering. Nowadays, thermodynamics technology are using everywhere and they make our life more convenient. So, I want to do research how thermodynamics works and how they contribute to our daily life. 1.0 Introduction Boiling water is hot. Ice is cold. The diversity between hot and cold is detected naturally ability to sense heat and its opposite. We measure heat with a thermometer and we assign it a temperature. Dictionary definition of hot and cold relate those sensation to our normal body temperature. Warm things have temperatures above our body temperature, and cold things have temperatures below our body temperature. In this way, humans are able to compare the temperatures of things and get a subjective sense of hotness or coldness. In one sense heat is a sensation in the mind. But we know that some physical process is causing our nerves to be stimulated in this way. What is happening in nature that causes us to feel these sensation of hot and cold? It isnt only human beings who respond to heat flow and changes in temperature. Heat affects all material objects and the environment as well. Temperature determines whether most substances exist in a solid. Liquid. Or gaseous state, Heating and cooling, if it changes the temperature of a substance enough, can change the state of matter. SO basic is the phenomenon of temperature that physicist consider it a fundamental property of matter. Along with volume mass, electric charge, and time. The word thermodynamics consist of thermo, meaning heat, and dynamics, which refers to movement or change. In this broadest sense, thermodynamics is about heat and how heat moves and changes. The fact that heat move at all was itself a discovery of considerable importance. Its not at all obvious. You light a campfire and it warms you. It has heat. The fire goes out, and heat seems to disappear. Common experience will not tell you that none of that heat has really disappeared. Heat is a form of energy and energy can b neither created nor destroyed. That, as you will learn, is one of the most important of the laws of thermodynamics. Thermodynamics is really all about the study of thermal energy and how it behaves. Over time, Scientists and engineers learned that heat energy is related to work. The classic example is the steam engine, in which heat energy is used to boil water, creating steam to push a piston attached to a rotary shaft. The shaft can then be used to turn a train wheels or a ships propeller of the machines in a factory. In this process heat energy is converted into a mechanical energy, Understanding what heat and temperature are and how energy is transformed into different forms in essential to understanding the modern industrial world and how we get thing done. As we shall see, much of our theoretical understanding of thermodynamics did not come about until people could examine the functioning of real machines like the steam engine. 2.0 History of thermodynamics The ancient Greeks believe that the world is built up of four basic elements: water, air, earth, and fire. However they did not understand the true nature of heat, the ancient Greeks learned to use it to operate simple mechanical devices. Little is known of the life of Hero of Alexandria. He wrote treatises on working with the simple machines, like the lever, the pulley, the wedge, the wheel, the gear, and the screw. He described a primitive steam engine called an aeolipile. It consisted of a reservoir of boiling water connected by a tube to a large, hollow sphere with open, bent tubes coming out of it. The sphere was attached to a gimbal so that it could rotate. Heated steam entering the hollow sphere caused it to spin as it blew the steam out of the bent tubes. The aeolipile was the first device known to transform heat into ratery motion in effect, Heros device was the first steam turbine The history of thermodynamics started with G.Galilel(1597) who introduced the theory of temperature and he also invented one of the first thermometers. It was G. Black (1770) who was the first to use the term Thermodynamics. In 1772 G. Wilke introduced the unit of measuring the a mount of heat a Calorie. It was W. Tompson (1859) who introduced term thermodynamics into conventional use. In the 20th century, thermodynamics became a basic independent division of Theoretical Physics dealing with the study of general properties of physical systems under equilibrium, as well as common regularities taking place with attaining equilibrium. Thermodynamics is divided into phenomenological and statistical thermodynamics 3.0What is thermodynamics? Thermodynamics is a division of natural science related with heat, energy and work it defines macroscopic variables that show material and radiation and explains how they are related and by what law. Thermodynamics shows the average behavior of , large numbers of small divisions. 3.1Braches of thermodynamics 3.1.1 Classical Thermodynamics Classical thermodynamics shows the changes of thermodynamic in terms, either of their time-balanced equilibrium states, or else of their continually repeated like clockwork processes, but, formally, not both in the same account. It uses only time-balanced, or equilibrium, small quantities that can measure in the laboratory, counting as time-consistence a long-term time-average of a quantity, such as a flow, achieved by a continuously repetitive process. Classical thermodynamics does not accept change over time as a central circumstance in its account of processes. An equilibrium state stands constantly without change over time, while a continuously repeated cyclic process runs repeatedly without change over time. In the classical field closely and purely in terms of cyclic action, the best internal of the working body of a cyclic process is not considered; the working body thus does not have a characterized interior thermodynamic state of its own because no expectation is made that it should be in thermodynamic stability; only its inputs and outputs of energy as heat and work are considered. It is of course possible, and absolutely common, for the result in terms of equilibrium states of a system to show cycles composed of indefinitely many equilibrium states. 3.1.2 Statistical Thermodynamics Statistical Thermodynamics, also called statistical mechanics, appeared with the development of atomic and molecular approaches in the second half of the 19th century and early 20th century. It shows an explanation of classical thermodynamics. It considers the microscopic cooperation between individual particles and their combined motions, in terms of classical or of quantum mechanics. Its explanation is in terms of data that rest on the fact the system is built of several species of particles or collective motions, the branches of each species individually being in some sense all alike. 3.1.3Laws of Thermodynamics The laws of thermodynamics are different from others. Therere altogether four of them. Theyre arranged from zero to four. Not because they are arranged by discovery in order but because they are numbered some especially. The second law is different from others and therere no effect on others. It has different formulas. The first law describe the quantity of internal energy of a system, which was found from kinetic energy and from its potential energy which relates to its surroundings. The first law describe the transferring of heat between closed system as work. The second law include two theories which is known as temperature and entropy. Entropy shows the limit which is known as irreversibility from the beginning, on the work that can reach to an external system by thermodynamics process. The effects of temperature, which halfway showed by the zeroth law, which has quantities in the direction of energy flow as heat between two system in thermal connection and which is known as comm on sense of hot and cold 3.2.1.Zeroth Law If the object A is thermally equal with object B, and B is thermally equal with C. So, the object A is thermally equal with object C. This is more a matter of relationship than of physics. If they have the same temperature, the two objects are thermally equal. If object A and object B has the same temperature, and the object B and C have the same temperature, then both A object and B object have the same temperature. The most important thing in Zeroth Law is that, when a hot and cold object are place in contact together, the thermal energy will flow from hotter to the colder object until their thermal energy will remain equilibrium. 3.2.2.First Law Lets consider the first law as an isolated system. That means heat and energy can neither leave or enter the circle. Such system does not done any work. But we can imagine it with a certain energy inside it, namely U, which depends on the kinetic of the molecular system and also the systems temperature. The internal energy is the same with potential energy because it has a property that does not work. But it still has the potential to do work. The first law describes that the internal energy of the system increases if heat is added to a system. The first law can just show another way of the laws of conservation of energy. As heat and work are another form of energy, if they go outside of the system, it will affect the internal energy of the system 3.2.3.Second Law The Second law is popular for its formulation of entropy. Entropy is a technical term for talking about confusion which is found in the 19th century. The same theory let us know that heat energy automatically flow cold from hot and theyre not flowing in the opposite direction. This also remind us that if the ordered system can turn easily into disordered system, But disordered system cannot turn easily into the ordered system themselves easily.3.2.4.Third Law The third law of thermodynamics states that if an object reaches the absolute zero absolute zero of temperature (-273C), its atoms will stop moving. 4.0How Thermodynamics Works? 4.0.1.Refrigerator In refrigerator, the cycle is continuous. In the following example, we will show that the refrigerator use pure ammonia to keep it cool, which boils at -27 degrees F. This is what happens to keep the refrigerator cool: The  compressor  compresses the ammonia gas and the compressed gas heats up as it is pressurized . The  coils  on the back of the refrigerator let the hot ammonia gas take its heat. When it reaches high pressure, the ammonia gas condenses into ammonia liquid at high pressure. The high pressured ammonia liquid flows through the  expansion valve. Theres an expansion valve with a small hole. On one side of the hole is high pressured ammonia liquid and the other side of the hole is a low-pressure area it is because the compressor is sucking gas out of that side. The liquid ammonia boils immediately and vaporizes. Its temperature dropping to -27 F. This makes the inside of the refrigerator cold. The cold ammonia gas is sucked up by the  compressor, and the repeats the circle. 4.0.2 Air Conditioner Still, the major parts of an air conditioner manage to freeze and move air in two directions: indoors and outside: Evaporator receives the liquid refrigerant Condenser which act as facilitates heat transfer Expansion valve which regulates refrigerant flow into the evaporator Compressor which is a pump that pressurizes refrigerant The cold side of an air conditioner contains and a fan that blows air over the freezed coils and into the room and the evaporator. The hot side contains the compressor, condenser and another fan to release hot air coming off the compressed cool to the outdoors. In between the two sets of coils, theres a expansion valve. It regulates the amount of compressed liquid moving into the evaporator. Once in the evaporator, the refrigerant experiences a pressure drop, expands and changes back into a gas. The compressor is a large electric pump that gives pressure the refrigerant gas as part of the process of turning it back into a liquid. 4.0.3 Microwave Oven Microwave oven uses microwaves to heat food. Microwaves are a type of wave that are between radio waves and infrared radiation on the electromagnetic circle. For the process of microwave ovens, the commonly used wave frequency is about 2,450 megahertz (2.45 gigahertz).Waves in this frequency range have an interesting effects. Theyre absorbed by water, fats and sugars. Once absorbed, theyre converted directly into atomic motion, heat. These waves have another interesting property too: Theyre not absorbed by most plastics, glass or ceramics. 5.0Advantages of using Thermodynamics The devices as shown above each of them have Advantages. By using refrigerator we can keep perishable food, such as, vegetables and milk for much longer periods. Refrigerators also have a freezing part that will keep frozen foods and make ice to use in beverages By using Air Conditioner, its more comfortable and we can adjust the indoor temperature. In extreme heat, air- conditioning can be a life saver, improves the air quality and most air conditioner also reduce the humidity level, which helps both comfort. For Microwave oven, it can cook many food about 1/4th of the time necessary on a gas burner. It saves time in heating frozen foods. Food gets cooked uniformly. 6.0 Disadvantages of using Thermodynamics Thermodynamics not only have advantages but also have disadvantages. By using refrigerator it costs a lot of electricity to run. They are also environmentally unfriendly the refrigerator also contain refrigerant that can be damaging to the environment because of chlorofluorocarbon (CFC) content. This material is suspected to be the cause of reduction of earths ozone layer. When we frequently use the air conditioner, the air conditioning disease will occur. It is characterized by fatigue weakness, cough or fever and so on. Air conditioners energy consumption is considerable. It will consume a lot of energy. It also release CFC, which is environmentally unfriendly. Microwaves can cook food in very short period. Due to short period of cooking, food does not become brown unless the microwave has a browning unit. Sometimes unwanted chemicals migrate to food from plastic cook ware or food packages. The short cooking time may not give a chance of blending of flavours as in conventional methods. 7.0Recommendation As a result of the research carried out, it appears to be necessary to understand all the field of thermodynamics. Future technologies are requiring new materials with unusual effects that will either be prepared by high-temperature techniques. One of the important thing that can affect the pollution to the environment easily are the new devices. Equipment using volatile fluids that can harm to the stratosphere and destroy the ozone will have to be replaced. Devices that emit sulfur oxides will have to be modified to reduce sulfur emission to very low values. The ability of solar energy used devices will have to be improved and nuclear power plants will have to be designed to make less serious accidents. So that energy production by combustion to carbon dioxide is greatly reduced. 8.0 Conclusion The research report has taken information from various sources to understand what is thermodynamics; what are laws of thermodynamics; how they works; and how they make our life easier? It shows that thermodynamics used devices are very convenient to use. If there were no thermodynamics devices in this world it would be many difficulties to pass a day. By improving the uses and devices of thermodynamics, they can make our life more convenient and can reduce the environmental reduce the environmental side effects.

Training , Development & Performance with Motivation Essay examples --

Training , Development & Performance with Motivation Training includes all forms of planned learning experiences and activities designed to make positive changes to performance and Motivation. Development approaches the individual and employees’ motivation from a different angle from that of training. While training is typically concerned with enabling the individual to contribute to meeting the objectives of the organization better, personal development is more concerned with enabling individuals to develop themselves in the way that best suits individual needs. The two, it is hoped, will come together. By helping individuals to develop themselves, they will be more inclined and better able to contribute to helping the organization meet its objectives. It is important to stress that the process of linking performance and training and development the process of appraisal and other forms of evaluation should be closely linked to training and development. If the organizations to achieve its objectives, it is essential to train and develop its people so they are best able to support the organization in working towards objectives. At the same time the individual needs to have the opportunity to be able to communicate employees’ own personal development needs to the organization through appraisal or personal development planning schemes. The Financial and non-financial can be no doubt that financial reward is perhaps the most significant factor in pe...

Gatsby, Corruption of Wealth

Cold Cash Turns to Cold Hearts The 1920s’ was a hectic time period for many young and wealthy people living in New York City. Many entrepreneurs took advantage of these economic opportunities and profited greatly. Although, some took their wealth in strife, to benefit others, some people misused their new power. In the novel The Great Gatsby, F. Scott Fitzgerald shows how money and power are often abused. Gatsby never understood the genuine value of hard work. While Tom and Gatsby are talking, Gatsby exclaimed, â€Å"After that, I lived like a rajah in all the capitols of Europe† (Fitzgerald 65). Gatsby was constantly living the life of extreme leisure and luxury, having no responsibilities, and no problems. It is almost as if Gatsby is the â€Å"king† of West Egg, with his huge palace and nice cars. As an article states, Gatsby had â€Å"his white suit, silver shirt, and gold tie-his palatial house, his grand parties, his fancy automobile, his hydroplane, and his library of real books. †(Pauly) With endless amounts of materialistic items and fake friendships what is there to live for? Although Gatsby tells people that he had â€Å"inherited† his wealth, Nick believes he made the money a different and immoral way. When Nick and Gatsby travel to the city one afternoon, they meet a shady man who claims to be good friends with Gatsby. At first, Nick mistakes him for a businessman but, Gatsby explains â€Å"Meyer Wolfsheim? No, he’s a gambler†¦ He’s the man who fixed the World Series back in 1919† (Fitzgerald 78). Gatsby appears to be an honest man, but there is a shady and crafty to side to him as well. A quote from an article proclaimed, â€Å"Jay Gatz, whose ill-gotten wealth is acquired solely to gain acceptance into the sophisticated, moneyed world of the woman he loves, Daisy Fay Buchanan† (Telgen). When people picture a sleazy gangster they see someone who is dirty, probably poorly dressed. However, Thomas H. Pauly’s article demonstrates, â€Å"Jay Gatsby effectively overturned the dated assumption that gangsters were lowlifes from the Bowery and replaced it with an upscale figure who was enviably wealthy and fashionably stylish. † Judging someone based on their appearance can have its repercussions. The squalid acts Gatsby would do just to get rich is mind-boggling, the money can bring out the most deceptive people. Some people may speculate that money can buy happiness, friends, and security. However, in the end Gatsby ended up with nothing, when he sadly discovered that money cannot buy true love. When people obtain a large amount of money, they either spend it wisely and profit or â€Å"blow† it, spending on superficial possessions they do not need. Unfortunately, with obvious disregard for morals, ethics and even the law, there is a corruption of wealth and power in the novel The Great Gatsby and in modern society as we know.

A Mistake That Taught You an Important Lesson

Chapter 1: Basic concepts and terms This chapter answers the following questions: What is a dictionary? What are the different types of dictionaries? How can we describe a dictionary? What are the elements of a dictionary? What are the different kinds of information dictionaries provide? What is a dictionary? This is the first question one encounters when learning about dictionary skills or reading any book on lexicography (the art of compiling dictionaries). Defining the term â€Å"dictionary† is important to distinguish it from other reference books, which may look similar, like encyclopedias.Etymologically, the word â€Å"dictionary† comes from the Middle Latin word â€Å"dictionarium,† which means â€Å"collection of words and phrases†. This definition relates to the basic function of dictionaries which is listing the words of a language or a particular field of knowledge. This simple fact is the basis of all the definitions proposed for a dictionary. A dictionary is a book used as a reference source which contains lists of words arranged alphabetically or thematically, with explanations of their meanings (semantic information in monolingual dictionaries) or with their equivalents (in bi-, tri-, or multilingual dictionaries).They may also include more information related to orthography (spelling, alternate spellings), morphology (syllabification, word inflections, derivative forms, morphological paradigm), phonology (pronunciation, stress pattern), etymology (word history and origin), syntax (part of speech, verb type, noun type, etc), pragmatics (usage, frequency of use, style, context), and other semantic information (related words such as synonyms, antonyms). A dictionary may variously be referred to as: word book, lexicon, thesaurus, vocabulary, glossary, and concordance.However, each one of these is slightly different in scope. For example, a thesaurus (also from Latin, and which means a treasury or a storehouse) presents sy nonyms and antonyms; a glossary usually gives a list of terms confined to a particular domain of knowledge with definitions. What distinguishes a dictionary from these different types is that none of them provides all the different kinds of linguistic information a dictionary provides. Use thesaurus in a Sentence See images of thesaurus Search thesaurus on the Web Types of dictionaries: Dictionaries vary in coverage, size, and scope.They can be classified on the basis of different criteria. Knowing the types of dictionaries available is very important to decide which ones to buy or use. The following criteria are used to classify dictionaries: 1) Number of languages: Monolingual dictionaries are written in one language only. Each word is followed by its meaning or various meanings and probably other information related to pronunciation, grammar, or word history. Bilingual dictionaries are written in two languages. Each word is followed by its equivalent or possible equivalents in an other language.Bilingual dictionaries could be uni- or mono-directional; that is, they go in one direction only, from English to Arabic or vise versa. They could also be bidirectional; that is, the dictionary is divided into two parts; the first part is from Language 1 to Language 2, and the second one is from Language 2 to Language 1. Trilingual dictionaries are written in three languages. Multilingual language are written in more than two languages. 2) Age of the users: School dictionaries are intended for school students and they are graded according to children's age: elementary, middle, and high school students.They are simplified versions of adult references. They may also be referred to as â€Å"children's dictionaries† if they are intended for very young children. Adult dictionaries, on the other hand, are intended for adults and these are the ones that translators use and they include a variety of dictionary types such as college dictionaries, current language dictio naries, and unabridged dictionaries. 3) Size of the dictionary: This has to do with how fully a dictionary covers the lexicon of a particular language. The number of words is a measure of its relative size compared with other dictionaries in the same language.According to this criteria, dictionaries can be classified into the following. a) Unabridged dictionaries which are believed to include all the words of the English language (400,000 to 600,000 words). They give full coverage to the lexicon in general use and to specialized lexicon, with examples and all other information any dictionary could give. In other words, they provide complete and authoritative linguistic information. They are impractical for desk use because of their size and expense, but they are available in libraries and are important reference sources.Examples: Webster's Third New International Dictionary (NID3), and Oxford English dictionary (OED) which has 20 volumes. Semi-unabridged dictionaries are those which include about 315,000 words such as the Random House Dictionary. b) College dictionaries include from 150,000 to 170,000 words (almost 200,000 words). Examples: The American Heritage Dictionary of the English Language, The Random House College Dictionary, Webster's New World Dictionary of American English. They are called college dictionaries because they are often used by college students. c) Desk dictionaries include from 60,000 to 100,000 words.Examples: The American heritage dictionary, Merriam-Webster's Collegiate Dictionary. They are called desk dictionaries because they are often kept on desks for frequent reference. College and desk dictionaries are often abridged versions of larger dictionaries. Some publishing houses use the term college to refer to both college dictionaries and desk dictionaries. Some other houses use the term concise to refer to desk dictionaries; e. g. Concise Oxford Dictionary, Longman Concise English Dictionary. d) Pocket size dictionaries, which inc lude from 40,000 to 60,000 words; e. g. Pocket Oxford Dictionary. 4) Scope of coverage by subject:Subject-field dictionaries are confined to a special subject, such as law or medicine. Special-purpose dictionaries are limited to one aspect of language: collocations, slang, pronunciation, etymology, synonyms, usage, offensive and taboo words, spelling, dialect, neologisms, etc. A functional classification of dictionaries: For the purpose of the present course, which ultimately aims at training students to use dictionaries as professional translators, we will adopt the following classification that is based on the functions of dictionaries. Dictionaries are divided into two types: traditional and electronic dictionaries.I. Traditional (or regular) dictionaries: Traditional dictionaries are printed dictionaries (paper /print dictionaries). They are divided into four main categories: linguistic, visual, picture, and encyclopedic dictionaries. 1) Linguistic dictionaries are dictionaries that are concerned with words and provide linguistic information and may contain some pictures or illustrations. They are further divided into four types: general, learner, children, and specialized dictionaries. a) General-purpose dictionaries deal with the common words of a language and are compiled by language experts. They may be mono- or bilingual.They may be explanatory and help readers to understand a word meaning, its pronunciation, spelling, usage, etc. They may be translation dictionaries providing word equivalents. Explanatory and translation dictionaries may be unabridged, college, desk, concise, or pocket dictionaries. General-purpose dictionaries could also be production dictionaries (alternatively called activators) which are very useful in writing; they guide you as to which words or expressions to use to express similar or different ideas. They focus on use or meaning in context and on oral usage, rather than explaining their meanings.The first production dictionary is: Longman Language Activator: The World's First Production Dictionary (1993), Longman Essential Activator (intermediate level). The lexical information is organized around approximately 1000 key terms that serve as focal points for crucial sets of concepts. b) Learners' dictionaries are aimed at students learning a language. Examples: Oxford Advanced Learner's Dictionary, Collins Cobuild English Dictionary, Macmillan English Dictionary for Advanced Learners. c) Children dictionaries are very simplified versions specifically written for children. ) Specialized dictionaries are divided into two types: subject field dictionaries and special purpose dictionaries. Subject field dictionaries are limited to the vocabulary of specific scholarly areas or fields of knowledge such as medicine, law, religion, business and commerce, literature, military affairs and politics, etc. The rapid growth and development, and specifications in all the fields of knowledge has resulted in generating of new words or specialized terms for which the general dictionaries do not provide adequate information.Therefore, it became necessary to compile subject dictionaries which are devoted completely to specific subject fields. As a result many subject dictionaries and glossaries in Humanities, Social Sciences and Science ; Technology are coming out day-by-day. They are compiled by the experts in the different subject fields. Special purpose dictionaries deal with different aspects of language such as collocations, slang, idioms, phrasal verbs, neologisms, abbreviations, language varieties and dialects, synonyms and antonyms, pronunciation, etymology, usage, grammar, word frequencies, etc. ) Visual dictionaries tend to be complete dictionaries and rely on illustrations and photos or pictures; e. g. Merriam-Webster's Visual Dictionary Online. 3) Picture dictionaries are often organized by topic instead of being an alphabetic list of words. They include only a small corpus of words because they are often intended for children. They may be mono-, bi-, or multilingual. 4) Encyclopedic dictionaries has encyclopedic features; their concern is not the words of a language but rather with facts about things, objects, or people; e. . The Hutchinson Concise Encyclopedic Dictionary. II. Electronic dictionaries: An electronic dictionary is an electronic reference resource that contains a library of words and their meanings, spellings, and etymologies. They can be 1) portable (or handheld), battery-operated devices; 2) dictionary programs (on CDs) , or software running on PDAs or computers and which allow words or phrases to be input and translated; or 3) web based dictionaries accessible via the internet.Electronic dictionaries are more convenient than paper dictionaries and much faster to search. Examples of some online dictionaries: AskOxford Compact Oxford English Dictionary of Current English, Cambridge Dictionaries Online Cambridge Advanced Learner's Dictionary, Dictionary. com Dictionary. com Unabridged v. 1. 1 and American Heritage Dictionary of the English Language, Fourth Ed, Longman Longman Dictionary of Contemporary English, Merriam-Webster OnLine Merriam-Webster Online Dictionary, Oxford University Press Oxford Advanced Learner's Dictionary DictionariesTraditional Dictionaries Electronic Dictionaries Portable devices CDs Online dictionaries Linguistic Visual Picture Encyclopedic General Learners' Children Specialized Explanatory Production (Activators) Mono, college, desk, concise, pocketExplanatory Production Translation Explanatory Translation (monolingual) (bilingual) unabridged college or pocket college or desk Terminology (religious, literary, political, scientific, medical, etc) (mono and bi) concise Collocation, slang, idioms, phrasal verbs, common errors, neologisms, abbreviations (mono) pocket Synonyms, antonyms, thesaurus, production dic or activators (mono) Pronunciation, etymologies, usage, grammar, word frequencies, (mono) Colleg e, concise, pocket monolingual college or pocket Exercise: Find the following words in your dictionary, if you can't find them think of a reason to explain that: car cumdump goo gonzo coasthenia (psy) to smell to high heaven abarticulation (med) howitzer gun (mil) schlub action agent (mil) What type should you buy or use?Dictionaries are used by native speakers, language learners, or translators. Native speakers use dictionaries to help them in writing or in understanding unfamiliar words or phrases. For this purpose they use adult (unabridged or college) monolingual dictionaries. Language learners need learners' monolingual dictionaries, whether elementary, intermediate, or advanced dictionaries depending on their level of language proficiency. Translators, on the other hand, need both mono- and bilingual dictionaries. They are advised to choose the most recent editions of college or unabridged dictionaries, as the other types of dictionaries are limited in their vocabulary covera ge.They are also advised to have different types of specialized dictionaries of: idioms, collocations, phrasal verbs, usage, specialized terminology (religious, legal, political, medical, literary, military, psychological, scientific, etc). Elements of dictionaries: The elements of any dictionary can be discussed in terms of two levels: the macrostructure and microstructure. The macrostructure is concerned with dictionary features such as the front matter, the end or back matter, entry organization. The microstructure is limited to the structure of entries and the kinds of information they provide. We will discuss these two levels in detail in the following chapter on general monolingual dictionaries.