Which Research Paper Topic Is Best Organized With A Comparison-And-Contrast Structure
Sunday, January 26, 2020
Renewable Energy Sources In Malaysia
Renewable Energy Sources In Malaysia Today, energy challenge turned out to be a grave threat to sustainable development in developing countries since their energy needs is increasing more quickly than advanced countries. On the other side, fossil fuel combustion cannot maintain longer in the foreseeable future because of the environmental impact and the reduction of resources. Malaysia is experiencing dramatic growth of population and the economy and need to search for options energy sources in support of its inhabitants and business energy needs. Fourth-largest energy source in the world is biomass and was rich in the countries. Malaysia blessed with the tropical forests and moist climate all the year round which is a wonderful opportunity for full exploitation of agricultural and tropical rain forests possible. Term of waste-to-wealth has been started at the end of 1990, and it has become common. This idea is based on undesirable waste that is converted into useful energy while minimizing waste generation and to increase the economic-impact used primarily for cooking, for heating and electricity. Presently, coordinated attempts and different biomass energy plans are persuaded by the government for growth, commercialization and demonstration. This studys purpose to this present state and perspectives of the biomass use and strategy promoted to the future development of Malaysia. Keywords: Renewable Energy biomass potential Policy Sustainable Malaysia Introduction Malaysia covers a landmass of 329,847 square kilometers which consist of two regions; Peninsular Malaysia and Malaysian Borneo which are separated by the South China Sea [1]. With its population growth of 1.7% 1.6% per annum [2], Malaysia is heading to its governments vision to become a humane industrialized country by year 2020 and with such ambitious vision, the growth of Science and Technology is continuously developing hence contributing to increase need of energy [3]. Malaysia relies on non-renewable energy and is currently venturing into renewable energy. There are a number of identified renewable energy sources ; for example solar power, hydro power, oil palm biomass and waste materials [4] which are being used and further studies are being conducted to improve its quality and performance. The usage of renewable energy has contributed to reduced pollutions to the environment, cost saving cheaper source of energy [5], and does not reduce the natural sources [6]. As a developing country, Malaysias population continues to grow and live increasingly energy dependent lives the future of energy supply is growing. This paper is revised the present potentials of energy resources especially biomass and then the future contributions to the national energy generation in Malaysia. Information Analysis Energy crisis is becoming a serious threat to sustainability mainly in developing countries and communities of the last decades. Between 1990 and 2000, the Asia Pacifics developing countries met 27% increase in conventional energy consumption whereas the consumption of world energy was 11% [7]. Growing in the energy demand is predicted to continue in the future. Fossil fuels have been the main source of energy since first sparks of technology appeared in mankind lives, however, depletion of fossil fuel reserves as well as significant environmental impacts, leads the governments and authorities to focus on renewable energy resources. In most recent years, demand for petroleum-derived fuels is increasing as a result of grow in population and economy [8]. The contemporary Malaysian economy is a net energy exporter with 11% of export income in 2004 derived from crude oil, LNG and petroleum products [9]. The final energy demand of Malaysia is expected to grow at 2.9% per year, reaching 69.39 MTOEÃ [1]Ã in 2020, nearly double the 2002 level. The industry sector will have the highest growth rate of energy demand at 3.38%, followed by transport at 2.74%, residential at 1.86% and commercial at 1.14%, as shown in Fig.1 [10]. Fig.1. Predictions of Malaysian energy demand by sector (1980-2020) [11] Energy position in Malaysia Malaysia produces and utilizes both conventional and renewable sources of energy. The largest conventional energy resource found in Malaysia is petroleum (i.e. oil and gas). According to the Oil Gas Journal (OGJ), Malaysia held proven oil reserves of 4 billion barrels as of January 2010, and its oil reserves are reported to be the third highest in the Asia-Pacific region. Malaysia was the worlds tenth largest holder of natural gas reserves in 2010 and the second largest exporter of liquefied natural gas after Qatar in 2009. OGJ states that Malaysia held 83 trillion cubic feet (Tcf) of proven natural gas reserves as of January 2010. Coal deposits can also be found in Malaysia. However, only a small percentage is being mined [12]. Malaysia is a significant oil and natural gas producer and is strategically located amid important routes for the seaborne energy trade. Malaysias oil reserves are the third highest in the Asia-Pacific region after China and India. Fig.2. The electric power generated by different sectors in Malaysia (in 2009) (Source: trading economics) [13] It is evident that Malaysia is still very much dependent on fossil fuels in all its commercial energy demand and electricity generation (Table 2). Table2. Percentage of electricity generation based on fuel types [14] Year Coal (%) Petroleum (%) Gas (%) Hydro (%) 1994 9.30 22.30 51.70 16.70 2000 15.00 5.00 70.00 10.00 2010 18.00 2.00 50.00 30.00 2020 29.00 1.00 40.00 30.00 The most important sources supplies were crude oil and petroleum products and then followed by the natural gas. It can be stated that the total supply of energy is increased gradually from 1978 to 2013 (Fig.3). In 2013, the percentage of crude oil and petroleum products descending to under 10 % but the percentage of natural gas is ascending to just over 62 %. Although crude oil and petroleum had contributed the largest percentage of total amount supply, an increase in the usage of coal and coke had reduced the annual growth rate of oil supply. The contribution of the other sources whereas had remained the same. The cost effective, quality, reliability, and security supply need to be considered to produce optimal energy mix from domestic sources. The international market price of crude oil is projected to remain high so that alternative approaches need to be make to reduce the dependency on petroleum products. Fig.3. Fuel mix trend in power generation in Malaysia [15] Renewable energy resources The most important sources of renewable energy in Malaysia are biomass and solar and sustainable use of energy has been emphasized in the countrys development plans and supported by Government initiatives. Under the 10th Malaysia Plan, the Government will be introducing the feed-in tariff (FiT) of 1% to be incorporated into the electricity tariffs of consumers to support the development of renewable energy (Fig.4). 330 MW Biomass Biogas Mini-hydro Solar PV Solid Waste 100 MW 290 MW 65 MW 200 MW 41.5 23 X 2015 2009 5.5 % % of total electricity generated Planned increase in renewable energy capacity Fig.4. Moving towards renewable energy replaces the need for fossil-fuel power plants [16] Solar power The RE sector is fast gaining ground as a new growth area for many countries with the potential it presents environmentally and economically. It plays a major role in meeting energy needs, making it possible for businesses to reap energy cost savings while combating global warming. Currently, Malaysia is world the third largest producer of solar cells after China and Germany (Fig.5). Malaysia already has companies across the entire value chain, from silicon production to solar cell manufacturing and module assembly. With the committed amount of fund for the rolling out of the first FiT incentive for 2012 2014, Malaysia is on the right direction to achieve a targeted revenue of at least RM70 billion from the private sector by 2020. Fig.5. Predicted solar manufacturing from 2006 to 2020 by different regions [17] Predicted to be a clean energy of the future, solar energy has been at the forefront of power development in the developed countries and a possible source of energy for developing countries similar to Malaysia. This paper introduces Malaysias solar energy or solar photovoltaic development prospects. The study was carried out by first searching in the countrys energy policy linked to solar power. Key players in solar power development as government organizations are presented. Initial solar energy programs and key projects entitled Malaysia Building Integrated Photovoltaic (MBIPV) and the successful initiatives will be submitted. Measures that adopted by the government of Malaysia include appealing incentives to promote solar photovoltaic development, solar energy potentials of the country, foreign investment and the future direction and the feed-in tariff plan will be submitted with a length provide a wide range of solar power development in Malaysia. The prospects were positive and the country was actively promoting solar as alternative energy sources and aware of the benefits it bring for economy development in future [18]. Hydropower Hydropower is the only renewable energy technology that is presently commercially viable on a large scale. It has four major advantages, namely it is renewable, it produces negligible amounts of greenhouse gases, it is the least costly way of storing large amounts of electricity, and it can easily adjust the amount of electricity produced to the amount demanded by consumers. Hydropower accounts for about 17% of global generation capacity and about 20% of the energy produced each year [19]. Malaysia has a total land mass of 332,000 km2 and its mean elevation is about 300m. The average rainfall is slightly more than 2,600mm per year. The total gross hydro potential is 414,000 GWh/year, of which about 85,000 GWh/year is available in Peninsular Malaysia. Hence, whilst Peninsular Malaysia has 39% of the land area, its share of hydropower resources is only slightly more than 20% [20]. Tenaga Nasional Berhad operates three hydroelectric schemes in the peninsular with an installed generating capacity of 1,911 megawatts (MW). They are the Sungai Perak (1249 MW), Terengganu (400 MW) and Cameron Highlands (262 MW) hydroelectric schemes with 21 dams in operation. A number of Independent Power Producers also own and operate several small hydro plants. At present, hydro power is the only renewable energy source in Malaysia that is considered to be economically viable on a large scale. As for future hydro development in Peninsular Malaysia, several projects have been identified and studied at feasibility and pre-feasibility levels. These potential projects have to compete with alternative energy sources such as coal and gas in terms of economic viability. Wind The potential for wind energy generation in Malaysia depend on the availability of wind resource that varies with location. Understanding the site specific nature of wind is a crucial step in planning wind energy project. Detailed knowledge of wind on site is needed to estimate the performance of wind energy project. Average wind speeds are low in Malaysia and harnessing wind energy is only practical on remote islands or east coast states of peninsular Malaysia where the wind may reach 30 knots or more during periods of strong surges of cold air from the north. 30 knots is equivalent to about 15.4 m/s, which is about 55 km/h. However, application of wind energy at Malaysia can be used widely if the turbine can operate in country average wind speed which is 3-5 m/s. There was some study [21] done successfully to produce the electricity that suitable with wind condition of Malaysia, classified as low wind speed wind turbine. The northwest coast of Sabah and Sarawak region also potential to application of wind energy due to strength wind that reach 20 knot or more [22]. Due to maximum wind can be obtained during monsoon season which is between Octobers to March, the hybrid system of wind energy is feasible to compliment electricity supply during monsoon season. The first wind farm in Malaysia was set up on Terumbu Layang-Layang Island, Sabah. A Universiti Kebangsaan Malaysia study in 2005 has shown that the use of 150 kW turbine on the island has shown a good degree of success [23]. This study mentioned that Terumbu Layang-Layang Island has the largest wind energy potential compared to other places in Malaysia. Tidal energy is also promising renewable energy source available in Malaysia. Until recently, a preliminary study was carried out to explore the potential of ocean energy for electricity generation in Malaysia [24]. Study by Ref. [25], identified that Pulau Jambangan, Kota Belud and Sibu are the locations with great potential for tidal energy extraction. The total amount of electricity that can be generated on those locations is about 14.5 GWh/year. Biomass Nowadays, biomass is regarded as one of the primary sources of energy in the developing and developed countries. Malaysia with a large quantity of biomass waste as a source of power generation is considered as one of the possible countries in this area [26]. Oil palm is one of the main economic plants in the large number of countries. Malaysia alone generates about 47% of the global palm-oil supplies and can be regarded as the worlds leading manufacturer and exporter of oil palm. Malaysia also produces great quantities the oil palm biomass as oil coconut stems, oil palm leaves, blank product bundles, shells and fibres as waste from palm-oil product harvesting and oil extraction treatment. At now there is a constantly growing interest in the use the oil palm biomass of the source of cleaner energy. One of the main interests is hydrogen fuel from oil palm biomass. Hydrogen from biomass is clean and effective source of energy and is expected to make a major role in the future energy needs because of the raw material availability [27]. There are different types of thermo-chemical processing to convert the oil palm biomass to hydrogen wealthy petrol. Fig. 6 shows the cultivated area for oil palm in Malaysia (divided into three categories, i.e. Peninsular Malaysia, Sabah and Sarawak) within 34 years. The total oil palm planted area in the country increased by 4.5% to 4.69 million ha in 2009 [28]. In Sabah and Sarawak, the drastic increase in the 1990s can be attributed to the government policy in the intensification of palm oil industries in East Malaysia [29]. Malaysia produces about 15 million metric tonnes of palm oil per year. One tonne produces about 414 kg of biodiesel. With a caloric value of about 40,000 kJ/kg, this results in a total energy supply of about 7.8 GW/year from palm oil. Cultivated areas for oil palm in Malaysia.jpg Fig.6. Cultivated areas for oil palm in Malaysia, 1975-2009 [22] While the total energy available from residues and landfill gas has been estimated as 3.1 GW [30]. Major agriculture crop in Malaysia are oil palm (43.67%), rubber (30.56%), rice (12.68%), cocoa (6.75%) and coconut (6.34%). These provide Malaysia huge of biomass resources. In fact, government of Malaysia has announced the 5th Fuel Policy that states To supplement the conventional supply of energy, new sources such as renewable energy will be encouraged and biomass resources such as oil palm and wood waste as well as rice husks, will be used on a wider basis mainly for electricity generation [31]. Currently, residue from agriculture crops like paddy, rubber and sugar are use as fuel for generation of electricity in Malaysia using the cogeneration system. However, the percentage of using this residue for electricity generation is still low. Biomass residues are the main source of energy input to the mills using cogeneration system. It has been estimated the total biomass energy potential is equivalent to 2-3% of total power production in the country [32]. Report from [33], about 14 mills already used agriculture waste for energy demand, both for steam and electricity wit h total capacity amount 1567.2 MW. The increasing amount of paddy production make highly potential in CHP technology to convert the paddy husk residue for energy purpose. Around 20% of paddy is husk, rice husk in turn contains 16-22% ash, and 90-96% of the ash is composed of silica (silicon dioxide, SiO2). According to [34], by 2020 Malaysia will produce 768,290 tonnes of rice husk. As refer to [35], 1.5 kg of rice husk can generate 1 kWh, this mean by 2020 Malaysia can produce 512 TWh using rice husk residue. Some example of cogeneration project based on rice husk installed in Pendang Kedah Darulaman, which uses a steam boiler, 6.5 tonnes/h, 30 bar, saturated, connected to a 450 kW back pressure turbine and heat exchanger [36]. Electricity produces use for their owned consumption. Other example of rice husk project cogeneration that connected to system grid is installed at Titi Serong Rice Mill [37]. In Malaysia, the annual production of sugarcane bagasse reaches a number of million tonnes [38]. Nearly 30% of that number will turn into bagasse when it is crushed in a sugar factory [39]. Sugarcane baggase is the fibrous waste that remains after recovery of sugar juice via crushing and extraction. A ton of bagasse (50% mill-wet basis) is equal to 1.6 barrels of fuel oil on energy basis. The total of sugarcane energy content on dry basis, excluding ash (around 2-3% of weight) can be divided into three main parts. Malaysia produces 274,620 tonnes of sugarcane for 2009, with a moisture content of 50%. This means we can get 150,000 tonnes of dry bagasse annually. The caloric value for dry bagasse comes to be 17.33 MJ/kg, which make to total energy potential of 0.421 million boe per year. At the time, all the bagasse is being used as boiler fuels in sugar mills operating in the country. Most agriculture crops in Malaysia can be used to generate electricity. If all crops are fully utilize can help reduce the dependency on fossil fuel sources. Conclusion Biomass could be Remarkable as a stable and suitable replacement for fossil energy in Malaysia that cover appropriates 76% of land by thick and compact kind of tropical agricultural and forest. Currently, high motivation of biomass consumption in order to generate energy, sustainability of bio-sources, economic impact and environmental aspects are considered. Therefore, improving technologies related to bio-power and bio-fuel is continued. Recycling and using residues of forest and agriculture are valued in order to convert to useful energy and by product. Establishing biomass projects such as CDM by Malaysian Government is prominent in order to allocate subsidy to this kind of projects. Allocated subsidy is one common way of support biomass project. However, still there are many obstacles such as , knowledge development of biomass in Malaysia, risky situation for applying new technology, cost-benefit with financial indicators in comparison with conventional energy, energy demand in market place, speed of commercialization, feasibility of knowledge transferring, and the policies of government still are not successful to persuade and encourage industries to use biomass and efficient communication and negotiation with suitable strategy including integration, alignment and balancing situation between government and industries concern based on win-win is considered. Outlook of using biomass depends on the total cost of producing biomass energy in compared with fossil fuels. Using biomass instead of fossil energy with the decreasing cost of biomass is achievable and it can respect to environment.
Saturday, January 18, 2020
Doctor Faustus Review
On the 14th November 2012 we went to the Roseââ¬â¢s Theatre in Tewkesbury to watch Scene Productions perform the tragedy ââ¬ËDoctor Faustusââ¬â¢ which was filled with disappointment and unexpected aspects. However, it did bring forward a message throughout the play which is showed clearly and effectively. This message was that people who give into temptation because of greed get punished; this is based on a religious concept. At first we got told the whole performance was going to be an hour, this straight away made me have doubts about the play and allowed me to think that it was going to be rushed which I felt like happened. Despite this, there were some promising scenes which made me as the audience have a mixture of emotions. When I first arrived into my seat, the first thing I noticed was the set placed on stage. It seemed like a very simple set, but also very effective. It clearly showed the time the performance was set and allowed us to have a personal interpretation of the character Doctor Faustus without even meeting him. Whilst the lights were still on and people were coming into the theatre, it seemed like the production started as we are first introduced to two characters walking around in a sinister sort of manor, whether it was because people were late into the theatre or it was planned, it was a huge distraction and it was hard to focus on the dilemma which is occurring on stage, as I kept on turning my head to the loud talking of people arriving, not only this the harsh lights were still on which helped me to not focus on the characters on the stage whatsoever. The character of Doctor Faustus played by Ben Elder was introduced as a puppet, this was effective as it allowed us to realise that compared to hell he was seen as vulnerable and small. It also helped to distance the audience and showed to us that we are not watching reality; it was simply an interpretation of an urban legend. However, I also felt that it would have been much more effective if it was an actual actor performing because then perhaps we as the audience would be able to view his acting skills. The music throughout the play was purposely sinister to reflect on the major theme of the production which was death. The music helped to build the climax, create atmosphere and to determine the audienceââ¬â¢s emotion. The constant screaming and howling in the soundtrack helped to portray hell as a dangerous and horrific place to be. The music started to begin before the play even started this was effective as it allowed us to have an interpretation on the whole play and gave off an eerie atmosphere beforehand. There were a few mistakes made in the whole performance which disheartened me and made it seem messy and disorganised. When organising props and having costume changes behind the actual set, it became distracting if ever a noise was made or the sheet was accidently knocked. This decreases its effectiveness as it clearly distracted me from the performance. Small incidents were made, from tripping up the stairs whilst getting on the stage, to a door not opening fully for Faustus to get through backwards. However these little mistakes were acceptable but it brought up climaxes for nothing. They developed Doctor Faustusââ¬â¢s thoughts by presented them as an angel and a devil on either side trying to convince him to go onto their side. They were seen as a black card with wings on either side and hid their bodies. The persistent flapping of their wings showed their persevering and their urge to not give up. Though sometimes the angel and devils got a bit stupid They also interacted with the audience which effectively broke the fourth wall, as it engaged the audience and it felt like we were part of the play. The use of the sign saying ââ¬Ëclapââ¬â¢ or ââ¬Ëgaspââ¬â¢, I thought was a quite over exaggerated as it completely distracted you from the entire play. It also brought a comical feel to the whole performance which changes the whole theme, did they intend to make you laugh or feel sympathy for Faustus? They made a member of the audience feel uncomfortable and separating the performer both physically and verbally. This makes the audience member feel apprehensive about going on stage due to the distinctive and eerie atmosphere, however this can easily be criticised as I felt that due to this I was watching more of a pantomime rather than a dramatic performance which I thought it was going to be as it struggled to create a powerful meaning, although it helped to patronise the audience which created a scary atmosphere, breaking t he conventions of a normal and evil play. The lighting throughout the play was effective as it demonstrates the major motif which is morally evil. I was constantly engaged when the arrogant protagonist who makes a pact with Lucifer to gain forbidden power and outstanding knowledge. He then finds himself getting dragged into the murky mist of hell. The low budget performance consisted of a mass of creativity, as the set didnââ¬â¢t change throughout the whole thing. There were small candles used to illuminate the stage and set which cleverly symbolized the heat that burns in life and death. The Candles also represented beauty which is highly ironic, as hell is an evil and sinister place, and is nowhere near beautiful. In conclusion, I felt that the narrative was creative but the way they presented it was filled with disappointment, perhaps without the humour it would be classed as a dramatic play which is what it is originally supposed to be. I myself would not go see it again as it did not appeal to me whatsoever; it got exhibited as a pantomime and made me feel like a child. Though I would recommend this production to the older generation as it is filled with complexities and enigmas, though it would also engage children as they get attracted the humour.
Thursday, January 9, 2020
Top Research Paper Format Reviews!
Top Research Paper Format Reviews! Next you prefer to look at developing your topic. Reading published papers that are very similar to yours will likewise provide you a bit of insight into the proper layout. If you are able to discover an essay associated with your subject, you might rewrite it to accelerate the process. Before you begin your essay or research paper, you should get familiar with some overall APA rules. Research Paper Format Options For everyone that are beginning to compose essays, you will see specific rules or advice that may allow them to make a perfect essay. All individuals who comprehend the best method to compose an essay can write an awesome essay by allowing for lots of the vital points. If you're still exploring your topic whenever you are writing your paper and you cannot even form a question and offer and answer you're going to be graded accordingly. If you're interested in your research paper topic and have some essay suggestions to implement i t's possible to even receive an actual pleasure whilst working on it. Voila, very quickly you will realize your paper coming together. Then write the abstract part of your paper only after you're completely finished writing your paper. There are several different strategies to begin organizing a paper. You cannot submit a paper that's merely a string of quotes from assorted sources. Research Paper preparation means handling a great deal of information. It is not a task for one day. An individual should realize that every Research Paper is a sophisticated writing because it must contain distinctive research and distinctive idea. A research paper is a lengthy sort of written document connected with the definition of results from a person's extensive research about a specific topic. The aim of the paper needs to be stated at the start, followed by a description of the issue, the way of solution, and any other information needed to properly qualify the results presented and the conclusions. Personal information is one other way to acquire information. You should beware of using information on the internet that isn't cited as there's no system of peer review and data can be quite inaccurate. A template is a kind of design that's already formatted in your document so you can get started writing on opening it. By being aware of what format to use at the beginn ing, it is going to help save you lots of time because revisions are going to be at a minimum. Checking the format is normally a massive job for those editors. There's a format for all to follow for the simplicity of understanding. Your document may have a complicated structure, especially in the event the main body will be big. A rigid format ought to be used especially if you're required to hand in your outline. There you may learn to construct the structure and its elements. In the event the structure of the principal body has many levels, it is preferable to use different numbering styles. You might be accustomed to writing papers in another format like MLA or Chicago style, so it may take a while to find the hang of writing in APA format. APA format is well-known among students as a result of its simple guidelines and approach. It will help you to organize your paper well. Utilizing APA format means you're following an internationally acceptable writing style to whi ch a lot of the readers are extremely familiar also. Writing research paper isn't just merely a compilation of related literature that could support the argument you're trying to raise, the findings you're trying to get, or the question you're attempting to reply. The aim of your research paper is to give a solution to your research question. You are able to also describe the reach of your research. You may also have to get the proper documentation, like a research visa, if you're intending to do research in another nation.
Wednesday, January 1, 2020
Experience of World War One Portrayed by Siegfried...
Whilst patriotism and romanticism initially called men to war in 1914, by 1918 the idealism soon changed with the reality of trench warfare. Soldiers from across Europe, and indeed the world, first entered World War One with innocent enthusiasm. The expectations of the young men who joined, however, were shaped by the culture of age. It was the romantic mood of the time which essentially reinforced the hope that war would be won in honorable battle and ââ¬Ëbe over by Christmasââ¬â¢. These expectations were far from reality. The experience of war at the Western front was marked with the realities of modern warfare. Indeed, the old methods of fighting yielded to a static war of attrition, characterized by great battles, such as that of the Sommeâ⬠¦show more contentâ⬠¦So understandably, ââ¬Ëthe first contact with warââ¬â¢, as one French soldier reflected, ââ¬Ëwas a terrible surpriseââ¬â¢ with regard to the expectations with which soldiers entered in 1914. He c ontinued, ââ¬Ëwe could only see war through a rosy patriotic haze, and since we had left Paris the Bulletin des Armà ©es had been keeping up these silly illusionsââ¬â¢ . It was quickly realised therefore, by those who fought the war, that the ideals with which they embraced it were soon reshaped by the reality of experience. Indeed, the reality of life in the trenches brought on experiences far removed from the romanticised images of war the soldiers had seen in the newspapers of the time. The cavalry charges they expected gave way to the reality of stalemate fighting in trenches with new and terrifying methods. And essentially, it is this new method of warfare which most severely affected the individualsââ¬â¢ experience at the front. As summarised in the novel All Quiet on the Western Front the war experience of soldiers between 1914 and 1918 is so distinct from other wars in that soldiers ââ¬Ëdo not fightââ¬â¢, but rather ââ¬Ëdefend [themselves] against annihilationââ¬â¢. This experience of war is characterised in the battles of Verdun or the Somme in 1916. It is here that the soldiers experienced first hand the new role of technology.Show MoreRelatedEssay about The Beginning of World War I1494 Words à |à 6 PagesSynthesis Essay Bruce Lee once said, ââ¬Å"Mistakes are always forgivable, if one has the courage to admit themâ⬠(ââ¬Å"Bruce Leeâ⬠). During World War I, the mistake of Serbia killing the archduke was neither admitted nor forgiven. A series of events brought together the European continent into a bloody and unprecedented war. WWI depicts that a small error or miscommunication leads to a bigger issue and suffering of people as portrayed through the aftereffects of the death of Archduke Franz Ferdinand. At the
Tuesday, December 24, 2019
Charlotte Perkins Gilmans Cupid in the Kitchen - 1276 Words
Charlotte Perkins Gilmans Cupid in the Kitchen As a reader in the 1990s its tempting to see Charlotte Perkins Gilmans Cupid in the Kitchen as revolutionary and ahead of its time. She proposes the complete professionalization of the nutritive and execretive functions of society, a radical, if not revolutionary notion. However, in the light of the fin-de-siecle birth of the modern feminist movement, Gilman is but one voice in many crying for economic and social justice for women. In effect, the rhetorical situation of 1898 demanded and created this discourse as it does all discourse (Bitzer 5). Gilmans Cupid is a natural and elegant response to the conditions which created it: the continuing surplus of unmarriedâ⬠¦show more contentâ⬠¦This event also inspired Gilmans work. In this respect, Gilmans Cupid is neither revolutionary nor ahead of its time. That it bemoans the status of women in society and demands new opportunities for employment makes this piece more typical than remarkable. That is not to say that it is trivial. Gilmans book was both topical and significant in 1898. But whats most interesting in the 1990s is how her work differs from that of her contemporaries. What makes it stand out? How is it revolutionary, and why has it been anthologized? To answer these questions, the reader must follow the work to where the energy in the prose leads. This calls for a close examination of the most striking feature of her work, the proposal itself. Gilmans vision is revolutionary, and in some respects, prophetic. She proposes that the domestic chores of cleaning and nutrition be professionalized. Because they are so important, she argues, these tasks should be performed by well educated and trained professionals. She suggests that urban families living in flats and apartments could eat at a central, professionally staffed kitchen. In the suburbs, several houses could be linked by a kitchen in a similar way (Gilman 217-19). Her system offers several advantages. Obviously, peoples nutritional requirements could be better met by a centralized, professionally-staffed kitchen. In allShow MoreRelatedEssay on The Comparative Advantage of Sexual Divisions of Labor5471 Words à |à 22 Pagesshe saw as a virtuous and noble woman. Virginia Woolf, however, decried what she saw as the deplorable poverty of women in A Room of Oneââ¬â¢s Own. Her solution, however, only served to further separate the spheres of men and women. Finally, Charlotte Perkins Gilman similarly objected to the state of women in Women and Economics and ultimately proposed a society that abolished any division of labor along sexual lines. None of these authors seem to contest the presence of a comparative advantage
Monday, December 16, 2019
Artificial Intelligence and Learning Computers Free Essays
Artificial Intelligence Learning Computers Presented by: S. DEEPAKKUMAR Abstract The term artificial intelligence is used to describe a property of machines or programs: the intelligence that the system demonstrates. Among the traits that researchers hope machines will exhibit are reasoning, knowledge, planning, learning, communication, perception and the ability to move and manipulate objects. We will write a custom essay sample on Artificial Intelligence and Learning Computers or any similar topic only for you Order Now Constructing robots that perform intelligent tasks has always been a highly motivating factor for the science and technology of information processing. Unlike philosophy and psychology, which are also concerned with intelligence, AI strives to build intelligent entities such as robots as well as understand them. Although no one can predict the future in detail, it is clear that computers with human-level intelligence (or better) would have a huge impact on our everyday lives and on the future course of civilization Neural Networks have been proposed as an alternative to Symbolic Artificial Intelligence in constructing intelligent systems. They are motivated by computation in the brain. Small Threshold computing elements when put together produce powerful information processing machines. In this paper, we put forth the foundational ideas in artificial intelligence and important concepts in Search Techniques, Knowledge Representation, Language Understanding, Machine Learning, Neural Computing and such other disciplines. Artificial Intelligence Starting from a modest but an over ambitious effort in the late 50ââ¬â¢s, AI has grown through its share of joys, disappointments and self-realizations. AI deals in science, which deals with creation of machines, which can think like humans and behave rationally. AI has a goal to automate every machine. AI is a very vast field, which spans: à ·Many application domains like Language Processing, Image Processing, Resource Scheduling, Prediction, Diagnosis etc. à ·Many types of technologies like Heuristic Search, Neural Networks, and Fuzzy Logic etc. à ·Perspectives like solving complex problems and understanding human cognitive processes. à ·Disciplines like Computer Science, Statistics, Psychology, etc. DEFINITION OF INTELLIGENCE TURING TEST The Turing Test, proposed by Alan Turing (1950), was designed to provide a satisfactory definition of intelligence. Turing defined intelligent behavior as the ability to achieve human-level performance in all cognitive tasks, sufficient to fool an interrogator. Roughly speaking, the test he proposed is that the computer should be interrogated by a human via a teletype, and passes the test if the interrogator cannot tell if there is a computer or a human at the other end. His theorem (the Church-Turing thesis) states that ââ¬Å"Any effective procedure (or algorithm) can be implemented through a Turing machine. ââ¬Å" Turing machines are abstract mathematical entities that are composed of a tape, a read-write head, and a finite-state machine. The head can either read or write symbols onto the tape, basically an input-output device. The head can change its position, by either moving left or right. The finite state machine is a memory/central processor that keeps track of which of finitely many states it is currently in. By knowing which state it is currently in, the finite state machine can determine which state to change to next, what symbol to write onto the tape, and which direction the head should move. Requirement of an Artificial Intelligence system No AI system can be called intelligent unless it learns reasons like a human. Reasoning derives new information from given ones. Areas of Artificial Intelligence Knowledge Representation Importance of knowledge representation was realized during machine translation effort in early 1950ââ¬â¢s. Dictionary look up and word replacement was a tedious job. There was ambiguity and ellipsis problem i. e. many words have different meanings. Therefore having a dictionary used for translation was not enough. One of the major challenges in this field is that a word can have more than one meaning and this can result in ambiguity. E. g. : Consider the following sentence Spirit is strong but flesh is weak. When an AI system was made to convert this sentence into Russian then back to English, following output was observed. Wine is strong but meat is rotten. Thus we come across two main obstacles. First, it is not easy to take informal knowledge and state it in the formal terms required by logical notation, particularly when the knowledge is less than 100% certain. Second, there is a big difference between being able to solve a problem ââ¬Å"in principleâ⬠and doing so in practice. Even problems with just a few dozen facts can exhaust the computational resources of any computer unless it has some guidance as to which reasoning steps to try first. A problem may or may not have a solution. This is why debugging is one of the most challenging jobs faced by programmers today. As the rule goes, it is impossible to create a program which can predict whether a given program is going to terminate ultimately or not. Development in this part was that algorithms were written using foundational development of vocabulary and dictionary entries. Limitations of the algorithm were found out. Later Formal Systems were developed which contained axioms, rules, theorems and an orderly form of representation was developed. For example, Chess is a formal system. We use rules in our everyday lives and these rules accompany facts. Rules are used to construct an efficient expert system having artificial intelligence. Important components of a Formal System are ââ¬â Backward Chaining i. e. trying to figure out the content by reading the sentence backward and link each word to another, Explanation Generation i. e. generating an explanation of whatever the system has understood, Inference Engine i. e. submitting an inference or replying to the problem. Reasoning It is to use the stored information to answer questions and to draw new conclusions. Reasoning means, drawing of conclusion from observations. Reasoning in AI systems work on three principles namely: DEDUCTION: Given 2 events ââ¬ËPââ¬â¢ ââ¬ËQââ¬â¢, if ââ¬ËPââ¬â¢ is true then ââ¬ËQââ¬â¢ is also true. E. g. : If it rains, we canââ¬â¢t go for a picnic. INDUCTION: Induction is a process where in , after studying certain facts , we reach to a conclusion. E. g. : Socrates is a man; all men are mortal; therefore Socrates is mortal. ABDUCTION: ââ¬ËPââ¬â¢ implies ââ¬ËQââ¬â¢, but ââ¬ËQââ¬â¢ may not always depend on ââ¬ËPââ¬â¢. E. g. : If it rains , we canââ¬â¢t go for a picnic. The fact that we are not in a position to go for a picnic does not mean that it is training. There can be other reasons as well. Learning The most important requirement for an AI system is that it should learn from its mistakes. The best way of teaching an AI system is by training testing. Training involves teaching of basic principles involved in doing a job. Testing process is the real test of the knowledge acquired by the system wherein we give certain examples test the intelligence of the system. Examples can be positive or negative. Negative examples are those which are ââ¬Ënear missââ¬â¢ of the positive examples. Natural Language Processing (NLP) NLP can be defined as: ? Processing of data in the form of natural language on the computer. I. e. making the computer understand the language a normal human being speaks. à ·It deals with under structured / semi structured data formats and converting them into complete understandable data form. The reasons to process natural language are; Generally ââ¬â because it is exciting and interesting, Commercially ââ¬â because of sheer volume of data available online, Technically ââ¬â because it eases out Computer-Human interaction. NLP helps us in à ·Searching for information in a vast NL (natural language) database. Analysis i. e. extracting structural data from natural language. à ·Generation of structured data. à ·Translation of text from one natural language to other. Example: English to Hindi. Application Spectrum of NLP à ·It provides writing and translational aids. à ·Helps humans to generate Natural Language with proper spelling, grammar, style etc. à ·It allows text mining i. e. information retrieval, search engines text categorization, information extraction. à ·NL interface to database, web software system, and question answer explanation in an expert system. There are four procuring levels in NLP: 1. Lexical ââ¬â at word level it involves pronunciation errors. 2. Syntactical ââ¬â at the structure level acquiring knowledge about the grammar and structure of words and sentences. Effective representation and implementation of this allows effective manipulation of language in respect to grammar. This is usually implemented through a parser. 3. Semantic ââ¬â at the meaning level. 4. Pragmatic ââ¬â at the context level. Hurdles There are various hurdles in the field of NLP, especially speech processing which result in increase in complexity of the system. We know that, no two people on earth can have similar accent and pronunciations. This difference in style of communicating results in ambiguity. Another major problem in speech processing understands of speech due to word boundary. This can be clearly understood from the following example: I got a plate. / I got up late. Universal Networking Language This is a part of natural language processing. The key feature of a machine having artificial intelligence is its ability to communicate and interact with a human. The only means for communication and interaction is through language. The language being used by the machine should be understood by all humans. Example of such a language is ENGLISH. UNL is an artificially developed language consisting universal word library, universal concepts, universal rules and universal attributes. Necessity of UNL is that a computer needs capability to process knowledge and content recognition. Thus UNL becomes a platform for the computer to communicate and interact. Vision (Visibility Based Robot Path Planning) Consider a moving robot. There are two things, robots have to think and perform while moving from one place to another: . Avoid collision with stationary and moving objects. 2. Find the shortest distance from source to destination. One of the major problems is to find a collision free path amidst obstacles for a robot from its starting position to its destination. To avoid collision two things can be done viz 1) Reduce the object to be moved to a point form. 2) Give the obstacles some extra space. This method is called M ikownski method of path planning. Recognizing the object and matching it with the contents of the image library is another method. It included corresponding matching and depth understanding, edge detection using idea of zero crossing and stereo matching for distance estimation. For analysis, it also considers robot as a point body. Second major problem of path planning is to find the shortest path. The robot has to calculate the Euclidean distance between the starting and the ending points. Then it has to form algorithms for computing visibility graphs. These algorithms have certain rules associated with. OJoin lesser number of vertices to reduce complexity. ODivide each object into triangles. OPut a node in each triangle and join all of them. OReduce the unnecessary areas because they might not contribute to the shortest path. OCompute minimum link path and proceed. This problem of deciding shortest path prevails. Robot might be a bulky and a huge object so canââ¬â¢t be realized as a point. Secondly a robot is a mechanical body which canââ¬â¢t turn instantly so it has to follow the procedure of wait-walk-wait-turn-wait-walkââ¬â- which is very time-consuming and so not feasible. Therefore shortest distance should have minimum number of turns associated with it. For path planning the robot has to take a snap shot of the area it is going to cover. This snap shot is processed in the above mentioned ways and then the robot moves. But then the view changes with every step taken. So it has to do the calculation at every step it takes which is very time consuming and tedious. Experts decided to make the robot take the snap shot of the viewable distance and decide the path. But this again becomes a problem because the device used for viewing will have certain limitation of distance. Then these experts came to a conclusion that the robot be given a fixed parameter i. . take to take the snap shot of a fixed distance say 10 meters, analyze it and decide the shortest path. Neural-networks Neural networks are computational consisting of simple nodes, called units or processing elements which are linked by weighted connections. A neural network maps input to output data in terms of its own internal connectivity. The term neural network derives from the o bvious nervous system analogy of the human brain with processing elements serving as neurons and connection weights equivalent to the variable synaptic strengths. Synapses are connections between neurons ââ¬â they are not physical connections, but miniscule gaps that allow electric signals to jump across from neuron to neuron. Dendrites carry the signals out to the various synapses, and the cycle repeats. Let us take an example of a neuron: It uses a simple computational technique which can be defined as follows y= 0 if ? Wi Xi ? Where ? is threshold value Wi is weight Xi is input Now this neuron can be trained to perform a particular logical operation like AND. The equivalent neural network simulation for AND function is given on the left and its equation format on the right. Perceptron training convergence theorem Whatever be the initial choice of the weights, the PTA will eventually converge by finding the correct weight values provided the function being trained is linearly separable. This implies Perceptron Training Algorithm will absorb the threshold with negative weight. ? Wi Xi + (-1) ? ? 0 A B Y 0 0 0 0 1 0 1 0 0 1 1 1 0 W1 + 0 W2 =0 ( ? ) 0 W1 +1 W2 =0 ( ? ) 1 W1 +0 W2 =0 ( ? ) 1 W1 +1 W2 =1 (? ) 0 W1 + 0 W2 =0 ? 0 W1 +1 W2 =1 ? 1 W1 +0 W2 =1 ? 1 W1 +1 W2 =0 ? Conclusion AI combined with various techniques in neural networks, fuzzy logic and natural language processing will be able to revolutionize the future of machines and it will transform the mechanical devices helping humans into intelligent rational robots having emotions. Expert systems like Mycin can help doctors in diagnosing patients. AI systems can also help us in making airline enquiries and bookings using speech rather than menus. Unmanned cars moving about in the city would be reality with further advancements in AI systems. Also with the advent of VLSI techniques, FPGA chips are being used in neural networks. The future of AI in making intelligent machines looks incredible but some kind of spiritual understanding will have to be inculcated into the machines so that their decision making is governed by some principles and boundaries. References 1. Department of Computer Science Engineering ââ¬â Indian Institute of Technology, Bombay 2. AI ââ¬â Rich Knight 3. Principles of AI ââ¬â N J Nelson 4. Neural Systems for Robotics ââ¬â Omid Omidvar 5. http://www. elsevier. nl/locate/artint 6. http://library. thinkquest. org/18242/essays. shtml How to cite Artificial Intelligence and Learning Computers, Essay examples
Sunday, December 8, 2019
El Museo Nacional de Culturas Populares abrio sus Essay Example For Students
El Museo Nacional de Culturas Populares abrio sus Essay puertas el 24 de septiembre de 1982. Su fundador fue el antropologo Guillermo Bonfil Batalla. Es un museo abierto a la diversidad en donde se fomenta el dialogo intercultural a partir de acciones que favorecen el conocimiento, y respeto por la diversidad de diferentes artistas de nuestro pais. Su proposito fundamental es documentar, difundir y estimular las iniciativas de los creadores de las culturas populares de Mexico, en ambitos tanto rurales como urbanos, a traves de exposiciones hechas por artistas y productos de origen 100% mexicano. El arte popular mexicano se nutre de vivencias historicas, tradiciones, pero tambien de creencias, inventos para explicar cosas y hechos que no tienen logica, Obedece a propias maneras de sentir, actuar y pensardel mexicano. Su objetivo es comunicar ideas o sentimientos, pero tambien conmover al espectador, despertar el dialogo, la reflexion y, tal vez el temor. Por ellos en el arte popular mexicano predomina la imaginacion desbordada, la alegoria, la metafora, la fantasia y la magia, tal vez con el deseo inutil de descifrar lo indescifrable, para esconder el verdadero ser, huir de cosas inexplicables. Las 4 cosas que mas me gustaron del museo fue la exposicion de Alegorias y fantasias del arte popular, en donde se representan pensamientos complejos, experiencias reales e irreales, analogias de la vida. Podemos ver el ingenio y creatividad del artesano mexicano. La segunda cosa que mas me gusto fue la exposicion de alebrijes, que son seres fantasticos, pintados con vibrantes y llamat ivos colores, las cuales combinan animales diversos. Su invencion se atribuye a Pedro Linares, artesano cartonero de la Ciudad de Mexico, quien creo hasta su muerte estas mezclas extranas de distintos seres, que le susurraban al oido alebrije. La tercera cosa que mas me gusto fue la exposicion de textil mexicano, donde se mostraban diferentes tipos de textiles trabajados con distintas formas de tejido, y materiales; se mostraban cuerdas largas, y algunos atuendos de ropa, y unos rosarios hechos a mano. La cuarta cosa que mas me gusto fue la exposicion Metaforas de Luna, esta exposicion proyecta el espiritu de los creadores indigenas que han hurgado en lo mas profundo de sus culturas para compartirnos sus suenos y sus realidades a traves de colores, espacios, tiempos, lugares y nombres renovados. El arte indigena contemporaneo aparece en estos creadores como expresiones vanguardistas. Opinion personal:Las obras de arte que se encontraban en el museo me dieron un sentimiento de fascin acion por cada una, porque por el simple hecho de que haya estado en manos de un artista me emociona. Tambien me gusto porque se pueden ver los diferentes tipos de cultura, o hasta diferentes etapas de la historia representadas en un simple objeto, lienzo o esculpida de una forma u otra. center14795500 Trabajo Museo Museo Nacional de Culturas Populares Ana Christina Vos Garcia de Alba 2B N,L#24 Profesora: Rosario LopezTolsa 22/02/16
Subscribe to:
Posts (Atom)