Investigating Prion Diseases Essay -- BSE Prion Mad Cow Disease

Investigation of Bovine Spongiform Encephalopathy (BSE), Sporadic Creutzfeldt-Jakob Disease (sCJD), New Variant Creutzfeldt-Jakob Disease (nvCJD), and the Controversy of the Etiological Agents Responsible for these Transmissible Spongiform Encephalopathies (TSEs) The connection between bovine spongiform encephalopathy (BSE), known conventionally as mad cow disease, and new variant Creutzfeldt-Jakob disease (nvCJD) has brought BSE to the public eye. The disease in cattle seems to have crossed the species barrier and develop into a fatal disease in humans, both belonging to the group of diseases known as transmissible spongiform encephalopathies (TSEs). Now a single cow infected with BSE raises public anxiety because of the belief that humans who ate infected meat will sicken and die because of nvCJD. But how concrete is this connection between BSE and nvCJD? Though experimental data supports the connection, many questions have still not been answered. Recently, new studies have been done to find an alternative etiological agent to these diseases grouped as TSEs, and three UK scientists have linked BSE, sporadic Creutzfeldt-Jakob disease (sCJD), and possibly nvCJD with multiple sclerosis (MS) in a surprising new claim that all three diseases ar e actually autoimmune diseases. Transmissible spongiform encephalopathies (TSEs) came into contact with the human world as early as 1732 through an Englishman's description of scrapie, a TSE that occurs in sheep and goats; there may have been even earlier cases in the 1690's if the disease dubbed â€Å"la Tremblante† in France referred to scrapie. (Ebringer et al., 2005) TSEs are â€Å"distinct from any other amyloid-based diseases in that they alone are transmissible.† (Brown, 2004, p. 335) This d... ...m encephalopathy and Creutzfeldt-Jakob disease: facts and uncertainties underlying the causal link between animal and human diseases. Neurol Sci (25), pages 122-129. Retrieved July 25, 2005 Brown, P. (2004). Mad-cow disease in cattle and human beings: bovine spongiform encephalopathy provides a case study in how to manage risks while still learning the facts. American Scientist v29 i4, pages 334-342. Retrieved July 25, 2005 Ebringer, A., Rashid, T., Wilson, C. (2005). Bovine Spongiform Encephalopathy, Multiple Sclerosis, and Creutzfeldt-Jakob Disease Are Probably Autoimmune Diseases Evoked by Acinetobacter Bacteria. Annals New York Academy of Sciences, pages 417-428. Retrieved July 25, 2005. doi:10.1196/annals.1313.093 Ï€Everbroeck, B., Boons, J., Cras, P. (2004). Cerebrospinal fluid biomarkers in Creutzfeldt-Jakob disease. Bunge Foundation. Retrieved July 25, 2005

The Role of Estrogen in Sexual Differentiation :: Biology Essays Research Papers

The Role of Estrogen in Sexual Differentiation Most, if not all, species with two sexes exhibit sexually dimorphic behavior and physical characteristics. These dimorphisms can be attributed to differences in the brain, such as size or function of structure, and these brain structures can be affected by the hormones circulated throughout the organism. It has been held that the sexual dimorphisms rely only on the presence or absence of androgen, namely, testosterone, during the critical period of development for an organism; however, new research suggests that the presence of estrogen, specifically estradiol, has an active role in sexual differentiation. Several sexual dimorphic structures in the brain have been observed in laboratory experiments. The corpus callosum in male rats is much larger than that in female rats, and this size difference is uncorrelated with total brain weight. These findings led many to investigate the relationship between human male and female corpus callosa. A paper published by de Lacoste-Utamsing and Holloway stated that the splenium of the callosum is larger in women than in men, but their finding has since been challenged by several reports stating that there exists no sexual dimorphism. Analysis done from 1982-1994 reveals a small difference of corpus callosum size in favor of males, but it is hypothesized that age, handedness, overall brain size and weight, and incorrect statistics were not taken into account. (3) There has also been controversy in the research involving the brain region INAH-3 in humans. The heterosexual male INAH-3 is larger than that of heterosexual females; the INAH-3 in homosexual males is on the average smaller than that of heterosexual males and approximately the same size of heterosexual females. The general population has attempted to use this fact as an explanation of the biological basis of homosexuality, though the differences in structure may not be causally related to the sexual orientation of the man. Because we can only observe behaviors when doing experiments with lab animals, the data cannot firmly establish a basis for sexual orientation. The traditional view on sexual differentiation is that organizational effects from hormones which occur during neonatal development are the master plan for the organisms sex and corresponding behaviors and characteristics. Exposure to androgen, namely, testosterone, would result in a male organism, while exposure to neither androgen nor estrogen would result in the default sex: female. Characteristics resulting from organizational effects include formation of genitalia and traits such as aggression. The Role of Estrogen in Sexual Differentiation :: Biology Essays Research Papers The Role of Estrogen in Sexual Differentiation Most, if not all, species with two sexes exhibit sexually dimorphic behavior and physical characteristics. These dimorphisms can be attributed to differences in the brain, such as size or function of structure, and these brain structures can be affected by the hormones circulated throughout the organism. It has been held that the sexual dimorphisms rely only on the presence or absence of androgen, namely, testosterone, during the critical period of development for an organism; however, new research suggests that the presence of estrogen, specifically estradiol, has an active role in sexual differentiation. Several sexual dimorphic structures in the brain have been observed in laboratory experiments. The corpus callosum in male rats is much larger than that in female rats, and this size difference is uncorrelated with total brain weight. These findings led many to investigate the relationship between human male and female corpus callosa. A paper published by de Lacoste-Utamsing and Holloway stated that the splenium of the callosum is larger in women than in men, but their finding has since been challenged by several reports stating that there exists no sexual dimorphism. Analysis done from 1982-1994 reveals a small difference of corpus callosum size in favor of males, but it is hypothesized that age, handedness, overall brain size and weight, and incorrect statistics were not taken into account. (3) There has also been controversy in the research involving the brain region INAH-3 in humans. The heterosexual male INAH-3 is larger than that of heterosexual females; the INAH-3 in homosexual males is on the average smaller than that of heterosexual males and approximately the same size of heterosexual females. The general population has attempted to use this fact as an explanation of the biological basis of homosexuality, though the differences in structure may not be causally related to the sexual orientation of the man. Because we can only observe behaviors when doing experiments with lab animals, the data cannot firmly establish a basis for sexual orientation. The traditional view on sexual differentiation is that organizational effects from hormones which occur during neonatal development are the master plan for the organisms sex and corresponding behaviors and characteristics. Exposure to androgen, namely, testosterone, would result in a male organism, while exposure to neither androgen nor estrogen would result in the default sex: female. Characteristics resulting from organizational effects include formation of genitalia and traits such as aggression.

What is Plagiarism?

Based on the Oxford dictionary plagiarism is the practice of taking someones work or ideas and passing them off as one's own. Plagiarism is a crime, just like stealing and fraud. Many universities do not have strong penalties, either a student is expelled or suspended. Plagiarism in the real world is different and you can see up to ten years in prison based on the amount of work is plagiarized. There are four types of Plagiarism. This was stated by Annakay Aitken and I do agrees this her but this is my take on each  Direct plagiarism – not citing some one else workSelf-plagiarism – using a previous assignmentMosaic plagiarism – using some one else work with out quoting the informationAccidental plagiarism – forgetting to give credit where a writer should or not paraphrasing the informationWhy plagiarism is bad?Destroyed Student ReputationThis will cause a student to be expelled or suspended. As a student you do not want this on your record at your college or university.Destroyed Professional ReputationA professional person plagiarism can cost them there career.This may cause you not to be able to get a good job again especially in the public eyes. Politician, writers, journalist have to be very careful when it comes to plagiarism.Legal RepercussionsCoping another person information in a research, publishing or using the information with out cit ation is a crimal offence. Plagiarism can also be considered a felony under certain state and federal laws.For example, if a plagiarist copies and earns more than $2,500 from copyrighted material, he or she may face up to $250,000 in fines and up to ten years in jail. Creutz .C (2010, June 23) How to prevent Plagiarism, Demand Media Inc. (NYSE: DMD) is a leading content and social media company that informs, entertains and connects millions of people every day. Demand Media not only has the highest level of plagiarism detection on the market today, but they have also made a significant investment in new, custom technology that puts their plagiarism detection system well ahead of that used by any other publisher. Creutz. Robert(2011, Jan 27)Seven ways to prevent Plagiarism.ParaphrasingThis is reading the information and writing it you own wordsCitingWhen coping using someone's research information from web sites, books, or articles etc you should refer to the author, website this will allow the reader to know that the information in from that authorReferencingReferencing is citing source that you receive information fromQuotingWhen repeating or coping words or speech either written or spoken by another person it should be quoted.Example â€Å"Most plagiarists, like the drone, have neither taste to select, industry to acquire, nor skill to improve, but impudently pilfer the honey ready prepared, from the hive.† – Walter Colton S ource: FamousQuotesandauthors.comBe informedOne of the most importance way to prevent plagiarism is to information student about what is plagiarism, how to prevent it plagiarism and the penalties plagiarism. Before this topic I was aware of plagiarism but I did not know it was should a serious issues.Do not write blind.When doing a research where you have to quote or use other people information , it is a good idea to make sure all quotes are check before putting in your paper. Do not submit this information with out checking citation and quotes.Use Plagiarism Checkers onlineThere are several plagiarism checkers online, you can use to make sure your work is cited and referenced properly,one of such sites is https://www.aresearchguide.com/plagiarism-checker.htmlReference6 Ways tp Avoid Plagiarism in Research PapersTurnitin, LLC (2017)http://en.writecheck.com/ways-to-avoid-plagiarism/Demand Media Leads Publishing in Plagiarism Detection and Prevention Creutz. Robert (2011, Jan 27)http ://www.ithenticate.com/plagiarism-detection-blog/bid/52940/Demand-Media-Leads-Publishing-in-Plagiarism-Detection-and-Prevention#.WqI0bujwbIU Plagiarism PunishmentRobert Creutz on Jun 23, 2010 2:37:00 PMhttp://www.ithenticate.com/plagiarism-detection-blog/bid/52974/Plagiarism-Punishment#.WqEfGXBOmaM 5 Biggest Plagiarism Stories of 2016Jonathan Bailey – January 20, 2016http://www.ithenticate.com/plagiarism-detection-blog/bid/52974/Plagiarism-Punishment#.WqEfGXBOmaM http://www.ithenticate.com/resources/6-consequences-of-plagiarism Oxford University Press (2018)https://en.oxforddictionaries.com/definition/plagiarism

Marxist, Neoclassical and Deep ecologist theories of ecological crises

According to Marxist theory the fundamental causes of environmental degradation is the mode of production that comes into contradiction with the natural processes. It is only capital accumulation that is taken into consideration, but the value of environment is given little attention. The mode of capitalist production is designed in such a manner to yield the biggest returns in terms of profits within the shortest time possible. This mode of production does not integrate the natural process.The capitalistic growth does not consider the time required for the resources to regenerate or formation. The mode of production has also been spread over the globe and does not respect the already existing social organizations (Kovel, 2007). The production and supply of energy is supposed to go ahead without interfering with the natural environment including the flora and the fauna. Marxist approaches argue that environmental degradation does not result from lack of wisdom in capitalist mode of p roduction, but result due to the logic that underline the system.The call for environmental protection that would result to qualitative growth as advocated by social democrats is stymied by the logic of capitalists (Eckersley, 2005). The flow of individual capitalist is determined by the rationality of capitalists, but the whole system become irrational due to competition among capital, innovative processes to improve on the mode of production and save on raw materials that does not materialize due to unfair competition. For this reason there is nobody who cares for the welfare of the environment and thus water, soil, air are polluted.Unfair competition has resulted to overproduction problems. This means that natural resources are overexploited into production of non profitable goods and services. Violations of environmental regulations have resulted due to this unfair competition in search of super profits (Kovel, 2007). This can be identified by such criminal behavior of use of su bstances that have been inadequately tested, use of harmful and toxic substances, dumping of toxic wastes in unauthorized places, use of chemical labels with false statement (Eckersley, 2005).Marxist theory of imperialists metropolises argue that most advanced environmental degradation resulting from economic growth is in the most developed countries. There is economic exploitation due to economic quantification of social, natural and historic substrata in these countries is governed by commodity production which has resulted to fragmentation of social processes which were used in production there is competition among owners of the centralized properties which have led to environmental problems in imperialist countries.There is much use of land to create business premises, industries, theme parks and other structures which have facilitated much traffic and commuting time, but the structure of needs have not been changed. There is much traffic congestion in these metropolitan areas d ue to traffic policing on the private cars on the use of petroleum fuel. This is a threat to these places (Eckersley, 2005). Centralization of property has demanded building of energy firms especially nuclear power stations and fossil fuels which are a threat to the air quality and are not rational in economic use of energy.In market production they see it advantageous to throw away, burn, flush out what they consider unimportant and this have contributed to waste problem (Kovel, 2007). The consequences of this is much waste in the environment a characteristic of capitalist overabundance which have resulted to environmental problems of; urban sprawl, destruction of ecological systems over congestion, air pollution, release of radioactive substances building up of toxic substances and wastes etc (Benton, 1996). The environmental failures cannot be corrected by capitalism.The environmental resources of water, air, soil, and wood are wasted polluted and degraded often without control b y capitalism these environmental resources are considered as exogenous factors in economy i. e. they are factors of making profit. The limited nature of natural resources is seen by those buyers of them but the sellers interest is to expound on them and don’t see the need to safeguard them. The current push for capitalist is deregulation that is controlling to the attempts made of controlling the exploitation of the natural resources.Otherwise they are contemplated on false premise that the good profits (environmentally friendly) and bad profits can be distinguished on the laws of value. The imperialist countries have designed their structure of the economy as to give end of pipe solution already when the harm has already been done. This has very little remedies to the environmental problems. The consumers within capitalist production have been shaped and have aggravated ecological crisis. The individual change however can contribute very little in searching for the solution of environmental degradation (Benton, 1996).Ecological problems in developing countries have been seen to be as a result of poverty. According to Marxist poverty in these countries is as a result of imperialist action and their economic policies but is not an outcome of fate. Environmental problems in imperialist countries are as a result of affluence and not due to market economy. The poor people have become the victims and agents of environmental degradation. In most developing countries there is shortage of basic commodities especially fuel, food and water.The environmental problems faced by the developing countries have the origin of capitalist production. Imperialist countries have dominated the world market and depend on developing countries for raw materials of their industry and this have contributed to overexploitation of natural resources in these countries. The imperialist countries have designed economic structure that are dependent on the world market and have imposed t hem to the developing countries. For this reason the environmental resources are chosen on this basis for export to facilitate production in the imperialist countries.The pressure falls on the poor people in their environments. The impact of exploitation of environmental resources is widely felt in developing countries than in capitalist metropolises. According to Marxist environmentally degrading dynamics and organizing contradictions of World Bank are carried to the developing countries. The actions of the World Bank are devastating and incorporable weaker forces oppose it . raw materials are exploited for world market and there is parallel development of such things like roads, power –plants etc.There is also heavy clearance of land to pave way for pasture land or farm land to produce products for export and use of pesticides, chemical fertilizers that have resulted to pollution. The action of the World Bank raise a question about the poor people since they are pushed to r egions marginalized and therefore burns forest to pave way for farming. Cutting hillsides settling in flood prone areas or in arid zones etc contributing to ecological crisis (O'Connor, 1997). According to Marxist this question about the growth of cities in the developing countries is causing environmental problems.These cities have also resulted to waste disposal problems since dump wastes in unauthorized places. There are also energy shortages in these countries. The problems of the developing countries are aggravated by debts to imperialist countries and World Bank which often mean exploitation of more resources for export and thus increase in the level of poverty capitalist countries also transfer hazardous materials into the developing world and therefore pollute their environment. According to Marxist seeking to solve environmental problems of the developing world is a serious problem that often does not materialize.Credits and debts given to them only compound the problem and what is supposed to be done is reduce depending on the imperialist countries (O'Connor, 1997). The system of bureaucratic societies has also resulted to similar environmental problems as in imperialist countries. The reason for this is that they have only overcome the capitalist laws of value only partially but they have depend on capitalist and world market dependency on technological progress of the imperialist economies has also contributed to environmental degradation. Bureaucratization was expected to develop a social economy but it eliminated democracy.The issue of environments was only addressed in small departments. Deep ecology is based on the idea that the environment is supposed to stay intact and does not exist to serve human beings. According to deep ecology species have the right to exist no matter the unfaithfulness to their human being (Orton, 1999) Deep ecology places value on biodiversity which is necessary to the flourishing of both living and nonliving. Accordin g to this approach the origin of ecological crisis can be located on the systems of human beliefs, i. e. either religious or philosophical. Human beings are seen to dominate nature (O'Connor, 1997).According to the deep ecologist the right to live for all living things is universal and cannot be quantified. Therefore even human beings cannot be excluded from biotic community. It is believed that members of biotic community are supposed to preserve its integrity beauty and stability (Orton, 1999) Deep ecology shows that the civilization of human beings has damaged the integrity of nature. Ecosystem can absorb limited amount of water only if they do not exceed the carrying capacity. Through this approach ecologist have shown that human activities have changed the biosphere from its natural state.Deep ecologist gives holistic approach to environmental problems. The field of deep ecology uses two approaches i. e. scientific and deep ecology. Scientific ecology explains the relationship between living species of the earth and the environment (Orton, 1999). The field uses four directions i. e. Spirituality, Ideas, Feelings and Action. Spirituality tries to explain our relationship with what we see as sacred. Live here is seen as being sacred and it is believed that the power of life acts through the work of the earth recovery. Ideas on the other hand are based on idea that we are parts of nature rather than outsiders of nature.As part of nature we should use the ability to develop the ecosystem rather than destroy them. We should be the stewards of the environment rather than have dominion over it. Feelings unable us to see the state of the nature since we are part of it. As stewards we act according to these feelings. As environmental stewards we act for live (Orton, 1999) Marxist, Neoclassical and Deep ecologist theories of ecological crises. Neoclassical theory originated from several abstraction i. e. individualistic utility theory, firm theory and market theory . .Neoclassical values economy more other than anything else.Ecosystem is seen as just mere elements within the economy. In contrast to Marxist theory and deep ecology, neoclassical do not recognize the physical limits of nature and therefore they support for infinite growth. They hold that he failure that have resulted to ecological crisis occur due to lack of market values. However neoclassical economics have tried to integrate environmental issues in the market systems. This is contrary to Marxist theory, where Marxist sees all the environmental issues as a result of capitalism production. Neoclassical economist believes that markets will make everything right.In reality neoclassical do little to account for value of environment (Laferriere & Stoett, 1999). According to neoclassical economics market failures occur in three instances i. e. externalities, imperfect structure and public goods. Externalities in neoclassical economic approaches, crisis results due to negative external ities that result to inefficiency in the market. In this approach what is considered to be an externality is something that is external and is not determined by the nature. An example is where waste effluent from a firm is discharged into a water course resulting to water pollution.According to neoclassical economics this only happens because the value of the community water is not accounted for in the cost of production since this value is not available in the market tot be purchased by the community (Laferriere & Stoett, 1999). . This is contrary to Marxist theory and deep ecology approach. Marxist theory argues that such ecological crisis does not arise because of lack of wisdom but money driven factor which are aimed at maximizing profit. Deep ecology on the other hand has explained our actions towards the environment using the four directions as mentioned earlier.In this approach our actions towards the environment should be that of stewardship and such actions of discharging e ffluent into water body does not support the integrity, beauty and stability of nature and therefore this is wrong. According to Marxist theory, the environment is therefore undervalued, unprotected and polluted. Even where neoclassical economics call for internalizing the externalities so that amount of pollution is obtained. It is contrary to deep ecology since deep ecology support for the integrity of nature (Plumwood, 2002).The denial that externality only results from diversions from the real world lead to structures that are irrelevant to all the living things and the environment according to deep ecology approaches to ecological crisis. This is because it is only in the real world human being and other species live and therefore the models do not prescribe solutions to the problems that already exist in it. Moreover environment is treated as a thing that can be abstracted, exploited according to this approach of negative externalities regardless of the fact that it is dynamic living component.To place value on the environmental components so that they can be internalized in market it is contrary to Marxist theory since this value is placed only due to individual preferences. Such evaluation of environmental goods is hypothetical markets, contingent market valuation etc which have resulted to interference with the integrity of nature since nature is complex and human being cannot successfully value it. In neoclassical economic methods it remains clear that environment is a commodity that can be substituted once hedonic pricing and anthropocentric allocation of prices has been successfully determined (Plumwood, 2002).The values of natural resources are not prioritized by the market mechanism and it is only the exchange value base that is considered (Laferriere & Stoett, 1999). This is in contrast to deep ecology since resources under this doctrine should be part of nature and they have value in themselves and should be allowed to pursue their own good. In contrary resources are valued if they bring environmental benefits that can be evaluated or economic benefits according to neoclassical economists.It therefore means that species with no use value which have been attached to them have no any effect on optimal allocation of resources. Human beings have limited knowledge about the biodiversity, biophysical and therefore optimal valuation of the components of the environment often leads to irrational choices. Therefore market failure is not the problem or the one that brings the conflict between environment and the economic activities. The conflict merely arises due to impossibilities of the market structure to place a reasonable value of all the components of the environment in the real world (Plumwood, 2002).Ecological crisis have resulted to irreversible changes to earth and its inhabitants. Damage to the environment has threatened many species of the earth. Initially the issue was infinite growth which cannot be supported by our f inite earth. The threats created by ecological destructions can be dealt with by altering the concepts of economic growth . this is in contrast with neoclassical approaches that support market economies and holds that the crisis are due to market failure (Foster, 1997).The ecological crises are threatening the species of the earth. According to Marxist and deep ecologist crisis result from human activities that impact on the earth. According to Marxist there is need to change the mode of production and there is no need to wait for scientific evidence of their ecological consequences. However this is contrary to neoclassical economics where some firms are still maintaining harmful production techniques with little technological innovations the technological progress instead is acting on environment and destroying it.The industrial revolution of the 19th century resulted to production of much waste that polluted the environment. The wastes had consequences of degrading the environment and also threatening the health of all human being especially occupational workers since 19th century ecological degradation has become fast and furious. Ecological degradation is an outcome of technological advancement with little care of nature. This occurred on the eve of 19th century with innovation of cars petroleum use, the rise of chemical industry and agricultural sectors with heavy use of fertilizers and pesticides.The issue of planned economics and industrialization of the third world has also contributed to qualitative leap of resources (Benton, 1996). Deep ecologist has deep understanding of the nature. Marxist on the other hand analyzed the society and excluded co-evolutionary understanding of the relationship between nature and human beings. According to deep ecology analysis of nature the two cannot be vied as separate entities or independent bodies. Rather, sees the two as co-evolutionally and they change each other in dynamic processes.The historical forces and soc ial forces forms the basis in which human beings treat the environment Marxist’s assert that historical materialism in economic degradation is designed with structures that are degrading environment systematically and are exceeding the carrying capacity of the earth (Burkett, 1999). This is contrary to the views of neoclassical economists. Therefore they have caused much environmental degradation instead of establishing a co- evolutionary relationship.For Marxist there is both crisis of nature and social crisis that have resulted to ecological crisis. The ecological crisis has resulted due to the mode of production and reproduction that are designed to exploit the resources (Burkett, 1999). Marxist theory agree that human being have become both agents and victims of the ecological crisis and this has been evidenced by; social alienation malnutrition and pollution and poisoning to the environmental components in which human being depend and also see capitalism as being as spec ific historic form.( Benton, 1996). Bourgeois society which is criticized Marxist but supported by neoclassical economics is created by capital which also results to appropriation of nature and the social bonds to the members of the society. The great civilization of man results to nature being seen as an object for human beings, which is supposed to be utilized and fail to be recognized (Burkett, 1999). The discovery of the laws of the nature is seen as merely ruse in order to subjugate it to human needs as objects of utilization or facilitate production.Bibliography Barry J, Eckersley (2005): The State and the Global Ecological Crisis. ISBN-13: 978-0-262-52435-3, MIT Press. Benton T (1996): The Greening of Marxism. ISBN 157230118X. Guilford Press. Burkett P (1999): Marx and Nature: A Red and Green Perspective. ISBN 0312219407, St. Martin's Press. Eckersley R (2004): The Green State: Rethinking Democracy and Sovereignty, ISBN 0262050749, MIT Press. Foster, John Bellamy (1997): The Crisis of the Earth. Organization & Environment (journal), Vol. 10, No.3, 278-295 DOI: 10. 1177/0921810697103003 Kovel J (2007): The Enemy of Nature, ISBN: 9781842778715 Laferriere E, Stoett J (1999): International Relations Theory and Ecological Thought: Towards a Synthesis, ISBN-13: 978-0415164795, Routledge. O'Connor J (1997): Natural Causes: Essays in Ecological Marxism. SBN 1572302739, Guilford Press Orton D (1999): Deep Ecology and Criticism, ISBN: 0-8476-8929-8, Littlefield. Plumwood V (2002): Environmental Culture: The Ecological Crisis of Reason. ISBN 0415178770, Routledge

Historical inaccuracies in Ridley Scott’s film `Gladiator Essay

In recent years the emergence of filmmakers who expressed interest in adapting historical events as wide-screen presentations has revitalized public interest on historical events. But the usual problem is that the general public’s view usually gets distorted due to contemporary filmmakers’ nasty habit of utilizing their artistic license to its full extent More often than not, adaptations of historical events like Ridley Scott’s Gladiator offers a glimpse of early civilizations but neglects the aspect of historical accuracy which in turn cannibalizes scholarly efforts to reconcile public interest in the actual historical events. The glitz and glamour of commercial cinema is in large part responsible for the historical inaccuracies of Ridley Scott’s Gladiator. Martin Winkler (17) suggests that the reason behind a historical film’s departure from its origins is that the fiction which causes the inaccuracy is what sparks viewer interest in the first place. In accordance to Winkler’s theory, the elements incorporated in Gladiator contributes to the film’s historical infidelity; its principal characters, chronology, production design, and supposed intent of exhibiting the authentic life and culture of Imperial Rome, has been diluted by the filmmakers’ aesthetics. As per what the film entails, the structure of the Gladiator’s narrative appears to be drastically shortened. Commodus’ reign was marked by numerous assassination plots, including a scheme that involved her own sister Lucilla, all accounts of murdering the treacherous emperor have neither been established nor even mentioned in the film. Historical accounts further suggest that Commodus’ reign ended 13 years later upon his assassination (Boatwright, Gargola, & Talbert 405-406), the film, on the other hand, although the time frame of events were never actually mentioned or given much attention, it illustrated that Commodus reigned no more than two years (Ward 33). The film also depicts that Emperor Commodus died in a gladiatorial duel with Maximus, obviously in a coliseum, with the intent of bringing back democracy to Rome and re-establishing the country as a republic. While the 73rd book of Cassius Dio’s eye-witness account of Roman History imparts that a wrestler who popularly went by the name Narcissus choked the life out of Commodus, and the incident happened in the emperor’s bath. The film’s characters also share an extent of inaccuracy with the actual historical personalities from which they are derived from. Evidently, from appearance to characteristics, the film’s Commodus did not reflect the Roman Emperor whom history recognized. Primarily, Commodus’, in the film, is bequeathed as a dark hared man in his mid 20s who fights with his right hand and has an underdeveloped physique (Ward 33). While the historical Emperor Commodus was and 18-year old blonde with a well developed physique and fought with his left hand (Kyle 224-227). Likewise, the actual description of Commodus’ personal traits was inconsistent with the film as the historical Commodus was notorious for his corruption, violence, and lust for blood. The film shows the aforementioned characteristics through Commodus’ fixations on sports such as beast-hunting, chariot-racing, and gladiator combat as well as his claims to have won over 1,000 battles (Ward 32). However, Scott’s incarnation contradicts the true nature of the roman emperor as he is characterized by his guiltless lack of emotion and compassion, ruthlessness, cowardice, and mental instability (Hekster 53-56). Contrary to the film’s illustration that Lucilla had an 8-year old son named Lucius Verus, Allan M. Ward’s Gladiator in Historical Perspective entails that, historically, the son who went by the name Lucius Verus died during infancy. Also, Lucilla gave birth to three children during her marriage with Lucius Verus Marcus and only one of the three children survived and grew up, an unidentified daughter who became part of the assassination scheme against Commodus. Lucilla, however, bore a son but she did so in her marriage, with Tiberius Claudius Pompeianus, and the boy’s name was Aurelius Commodus Pompeianus who was 6-years old during the time of the film’s events. Similarly, the reason behind the strained father-daughter relationship between Lucilla and Marcus was the latter’s arrangements of a second marriage for his widowed daughter. Apart from the disrespecting reality that the second marriage occurred only 9 or ten moths after Verus’ demisae as well as the tremendous gap between the couple’s ages (Lucilla was 19 while Claudius Pompeianus was approximately in his 50s), Lucilla also felt undignified by the fact that her new spouse came from a family of provincial equestrians in Antioch, Syria (Ward 33-34). However, the film did not took such event into account leaving the reason behind the cold relationships between the former emperor and former Augusta vague (Ward 33-34). The film’s central character Maximus Decimus Meridius, is a fictional character based on the archetypes of able-bodied men from the far reaches of the empire’s jurisdiction who served as the materialization of Marcus Aurelius’ persisting idea of using men beneficial to the imperial cause (Ward 38). To a similar extent, Maximus’s character is attributed to two recognizable Roman political and military personalities, Marcus Nonius Macrinus who was one of Marcus Aurelius’ closest friends and Tiberius Claudius Pompeianus who was partly responsible for the Roman triumph over Marcomannic War in the film’s beginning (Popham). George Depue Hadzsits (70) suggests that a film such as Gladiator is more likely to revive interest in the subject of history considering that scholarly efforts simply produce fragments of history which does not fulfil the human yearning for knowledge. Hadzsits furthers that despite such visual spectacles’ temporal didactic value and lack of attention on the angle of accuracy, at least the interest for the subject matter is roused (Hadzsits 71). The problem with Gladiator, conversely, is that its revival of interest in Roman History, or ancient world history for that matter, seems to delineate the supposed dissemination of ancient Roman culture and alters it with norms that the filmmaker deems right. In terms of production design, the armour and weaponry worn and yielded by the gladiators appear to have a medieval design rather than Roman. Allan Ward (39) writes that gladiators had already been placed under categories like eques or horseman, provocator which is believed to be the term for challenger, murmillo or what is considered as water combatants, hoplomachus or gladiators who wield heavy weaponry, retiarius the net fighters, and secutors or contraretriarius otherwise characterized as the light armed fighters. However, Ward (39) argues that the film does not seem to highlight the distinctions between gladiators as all of the competitors generally wore the same armour with little differences in weapons of choice. Ward furthers that each fighter category comes with a different set of weapons and armour as well as a different style in combat. The matches between two gladiators are dependent of their category and fighting abilities, a secutor, for instance was often matched with a retriarius, perhaps due to the resemblance in the nature of their weapons and battle skills. Moreover, gladiators within a similar category were not paired to pit against each other, with the exception of the horsemen and the challengers. As mentioned earlier, one of the premises tied with Gladiator is the tendency to rouse interest on the life and culture of ancient Rome, but in this context the film is also inaccurate. James R. Keller (88) implicates that Gladiator imposes the American devotion to the principles of democracy. Initially, the final confrontation between Maximus and Commodus should incite the cultural importance of gladiatorial combat in ancient Rome, however, the re-arranged plot of the film that caused the conflict between the former general and the treacherous emperor to fail in its attempt to do so. The conflict then suggests that Maximus represents every working class, freedom loving American while Commodus serves as the embodiment of the corrupt, insensitive, and inconsiderate aristocrat (Keller 88). In its inaccurate entirety, Gladiator has proven itself to be more of a costume drama adaptation rather than a re-telling of an antiquated historical tale. Despite the filmmakers’ efforts to conduct research and seek consultation for relevant information about the film’s source, the direction remained in the production people’s perspective and not with the scholarly one as the motion picture continued with the re-arranged biographical information of the characters and the reformatted events in the lives of the characters. In addition, the film simply delivered a visual spectacle rather than a knowledgeable historical fact. Martin M. Winkler (204-205) writes that film producers and other individuals concerned with marketing cultural products habitually call on scholars to guide them in marketing historical films. This is, in large part, brought about by producers’ beliefs that scholar credibility is enough to amplify the promised prestige and revenue of their product. Scholarly prestige according to Winkler is mainly vital as a marketing strategy, but a more appropriate term seems to be deceptive advertising as investing parties and supposed artists convince the public of the accuracy of their distorted historical documentation with the aid of renowned experts

Columbia River Pulp Company Inc

CORP. received refinanced approval of its long term debt from Toronto – Dominion Bank (AD Bank) amounting to $200 million based on floating rate. The floating interest rate represents the significant risk that needs to be mitigated through hedging products. There were some hedging products that AD Bank offered to CORP., swaps, caps, or collars, or some combination? There were definite trade-offs between these hedging products In terms of flexibility, interest rate protection, and true cost. Andrew Theatre, Chairman of CORP., had to decide on the amounts and maturities of the various transaction hedging offered.Issue Business Kraft Market pulp Is a truly global commodity, which prices changing quickly In response to capacity changes, inventory levels, and purchase levels. While market alp is produced in about 25 countries, historically more than two-thirds of world output has come from five northern countries : the united States, Canada, Sweden, Finland, and Norway. One major c hange in the global pulp market was the mid – sass launch of pulp futures markets . While these markets were not an immediate success, there was enough trading volume to sustain at least market, the Pulped/ Finish Options Exchange.It was hoped that futures markets, widely used to trade futures in commodity products – such as copper, aluminum, sugar, and coffee – would bring more price stability to the pulp market and even out some of the extreme price fluctuations that have plagued the global market pulp Industry. Price levels for market pulp as shown below : In 1978, CORP. had financed the original cost of the mill from a group of united States insurance companies. The insurance companies was in doubt about the quality of their loans. This was because of the cumulative operating losses over the 1982 – 1986 period which totaling $ 39. 1 million.CORP. was unable to meet the repayment schedule on the debt. So, in march 1988, CORP. approached Toronto  œ Dominion Bank (AD Bank) to refinance $200 million of its long term debt. On July 21 , 1988 CORP. received reedit approval from AD Bank Board. CORP. received rationalization financing a $200 million, seven year reducing, revolving term facility and a $25 million operating facility from the syndicate of six international banks. The floating rate borrowing options and bank lending margins were shown below : The use of floating rate debt to finance fixed assets represents significant risks If the interest rates increased.The risk can be offset through interest rate swaps, caps, and collars. In order to partially engage ten Tolling rills rate on ten mans ten Dank syndicate had included a positive covenant in the credit agreement which effectively arced the company to lock in fixed rates of interest on its debt. This covenant stated the following : within 90 days after closing, the borrower will arrange interest rate swaps or similar hedging arrangements so that a total of $100 million of debt has a term of at least three years and an interest rate not to exceed 12%.

Changes And Urban Expansion In Greater Dhaka Environmental Sciences Essay

The analysis revealed that significant growing of built-up countries in Greater Dhaka over the survey period resulted important lessening in the country of H2O organic structures, cultivated old termland, following term flora and wetlands. old termUrban land expansionnext term has been mostly driven by lift, population growing and economic development. Rapid old termurban expansionnext term through infilling of low-lying countries and glade of flora resulted in a broad scope of environmental impacts, including habitat quality. As dependable and current informations are missing for Bangladesh, the old termlandnext term usage maps produced in this survey will lend to both the development of sustainable old termurban landnext term usage planning determinations and besides for calculating possible hereafter old termchangesnext term in growing forms. Urbanization is one the most widespread anthropogenetic causes of the loss of cultivable old termlandnext term ( Lopez, Bocco, Mendoza, A ; Duhau, 2001 ) , habitat devastation ( Alphan, 2003 ) , and the diminution in natural flora screen. The transition of rural countries into old termurbannext term countries through development is presently happening at an unprecedented rate in recent human history and is holding a pronounced consequence on the natural operation of ecosystems ( Turner, 1994 ) . Although old termurbannext term countries presently cover merely 3 % of the Earth ‘s old termlandnext term surface, they have marked effects on environmental conditions at both local and planetary graduated tables ( [ Herold etA al. , 2003 ] and [ Liu and Lathrop, 2002 ] ) , including clime old termchangenext term ( Grimm, Grove, Pickett, A ; Redman, 2000 ) . Since ecosystems in old termurbannext term countries are strongly influenced by anthropogenetic activities, well more attending is presently being directed towards supervising old termchangesnext term in old termurban landnext term usage and old termlandnext term screen ( LULC ) ( Stow A ; Chen, 2002 ) . Such surveies are peculiarly of import because the spacial features of LULC are utile for understanding the assorted impacts of human activity on the overall ecological status of the old termurbannext term environment ( Yeh A ; Li, 1999 ) . LULC old termchangenext term due to human activities is presently continuing more rapidly in developing states than in the developed universe, and it has been projected that by the twelvemonth 2020, most of the universe ‘s mega metropoliss will be in developing states ( World Bank, 2007 ) . Increasing population in developing metropoliss has caused rapid old termchangesnext term in LULC and increased environmental debasement ( Holdgate, 1993 ) . The consequence of population is peculiarly relevant given that the planetary old termurbannext term population is proj ected to about duplicate by 2050 ( UN, 2008 ) . In order to extenuate the damaging effects associated with old termurbannext term growing on the environment and to keep optimum ecosystem operation ( Fang, Gertner, Sun, A ; Anderson, 2005 ) , spacial and temporal LULC forms, and the factors impacting these old termchangesnext term ( Serra, Pons, A ; Sauri , 2008 ) , are well of import in developing rational economic, societal and environmental policies ( Long, Tang, Li, A ; Heilig, 2007 ) . Bangladesh has experienced rapid old termurbannext term population growing in recent decennaries ; the population numbered 14.1 million in 1981, 22.5 million in 1991, 31.1 million in 2001 ( BBS, 2001 ) and 35 million in 2005 ( CUS, NIPORT, A ; MEASURE, 2006 ) . Rapid urbanisation has led to the transmutation of rural countries into developed countries, and it has been estimated that more than 809A km2 of agricultural old termlandnext term is converted to metropoliss, roads and substructure yearly ( BBS, 1996 ) . The lessening in agricultural activities, the largest sector of the Bangladeshi economic system, and the attendant loss of cultivated old termlandnext term is likely to lend to landlessness, nutrient deficits and endanger the economic system ( Ahmad, 2005 ) . Dhaka, the capital of Bangladesh, is expected to be the 3rd largest metropolis in the universe by 2020 ( World Bank, 2007 ) and the rapid old termurbannext term growing experienced by the metropolis in recent decennaries is one of the highest in the universe ( [ Islam, 1999 ] and [ Islam, 2005 ] ) . old termUrban expansionnext term of Dhaka was slow in the 1950s, but strong growing followed the independency of Bangladesh in 1971 ( Chowdhury A ; Faruqui, 1989 ) . The considerable growing observed in the population of Dhaka is thought to hold occurred in response to large-scale rural-previous termurbannext term migration, which has contributed, significantly to the increased rate of urbanisation ( Islam, 1996 ) . To day of the month, the environmental and socio-economic sustainability of Dhaka, which is indispensable for development planning, has received comparatively small attending. This has resulted in widespread environmental jobs across the metropolis, mostly stemming from unpla nned urbanisation, extensive old termurbannext term poorness, perennial episodes of implosion therapy, significant growing of slums, development of resources, and the misdirection of limited old termlandnext term resources ( Hasan A ; Mulamoottil, 1994 ) . Geographic Information Systems ( GIS ) and distant detection ( RS ) are powerful and cost-efficient tools for measuring the spacial and temporal kineticss of LULC ( [ Hathout, 2002 ] , [ Herold etA al. , 2003 ] , [ Lambin etA al. , 2003 ] and [ Serra etA al. , 2008 ] ) . Distant feeling informations provide valuable multi-temporal informations on the procedures and forms of LULC old termchange, following term and GIS is utile for function and analysing these forms ( Zhang etA al. , 2002 ) . In add-on, retrospective and consistent synoptic coverage from orbiters is peculiarly utile in countries where old termchangesnext term have been rapid ( Blodget, Taylor, A ; Roark, 1991 ) . Furthermore, since digital archives of remotely sensed informations provide the chance to analyze historical LULC old termchanges, following term the geographic form of such old termchangesnext term in relation to other environmental and human factors can be evaluated. Numerous old termchangenext term sensing methods have been developed to measure fluctuations in LULC utilizing satellite informations ( [ Coppin etA al. , 2004 ] , [ Lu etA al. , 2004 ] and [ Singh, 1989 ] ) . Of these techniques, the pre- and post-classification comparings have been extensively used ( [ Coppin etA al. , 2004 ] and [ Singh, 1989 ] ) . In the pre-classification attack, processs such as image differencing ( Toll, Royal, A ; Davis, 1980 ) , band rationing ( Nelson, 1983 ) , old termchangenext term vector analysis ( Johnson A ; Kasischke, 1998 ) , direct multi-date categorization ( Li A ; Yeh, 1998 ) , flora index differencing ( Townshend A ; Justice, 1995 ) and principle constituent analysis ( Fung A ; LeDrew, 1987 ; Hartter, Lucas, Gaughan, A ; Aranda, 2008 ) have been developed ( [ Hardin etA al. , 2007 ] , [ Jensen, 1996 ] and [ Singh, 1989 ] ) . The basic premiss of these processs is that old termchangesnext term in LULC consequence in differences in the pel c oefficient of reflection values between the day of the months of involvement. However, while these techniques are effectual for turn uping old termchange, following term they can non place the nature of old termchangenext term ( Ridd A ; Liu, 1998 ) . Conversely, post-classification comparings examine old termchangesnext term over clip between independently classified old termlandnext term screen informations. Despite the troubles associated with post-classification comparings ( [ Coppin etA al. , 2004 ] and [ Singh, 1989 ] ) , this technique is the most widely used for placing LULC old termchangesnext term ( [ Jensen, 1996 ] and [ Lu etA al. , 2004 ] ) , peculiarly in old termurbannext term environments ( Hardin etA al. , 2007 ) . However, one of the disadvantages associated with this attack is that the truth of the end point LULC old termchangenext term maps depends on the truth of the single categorization, intending that such techniques are capable to error extension ( Yuan, Sa waya, Loeffelholz, A ; Bauer, 2005 ) . However, such post-classification techniques are peculiarly utile for bring forthing ‘from-to ‘ maps ( Jensen, 1996 ) , which can be used to clear up the magnitude, location and nature of the old termchangesnext term shown ( Howarth A ; Wickware, 1981 ) . In add-on, the technique can be employed utilizing informations acquired from detectors with different spatial, temporal and spectral declarations ( [ Alphan, 2003 ] and [ Coppin etA al. , 2004 ] ) . RS is really effectual for exemplifying the interactions between people and the old termurbannext term environments in which they live ( Gatrell A ; Jensen, 2008 ) . Space-borne orbiter informations are peculiarly utile for developing states due to the cost and clip associated with traditional study methods ( Dong, Forster, A ; Ticehurst, 1997 ) , and these techniques have become feasible options to conventional study and ground-based old termurbannext term mapping methods ( Jensen, Hodgson, Tullis, A ; Raber, 2004 ) . Several surveies have demonstrated the pertinence of RS to developing sourcing information and for back uping decision-making activities in a broad scope of old termurbannext term applications ( [ Gatrell and Jensen, 2008 ] , [ Jensen and Cowen, 1999 ] and [ Zeilhofer and Topanotti, 2008 ] ) . In the country of old termurbannext term planning, of import RS research has been conducted to day of the month, peculiarly in old termurban changenext term analysis and the m old of growing ( [ Bahr, 2004 ] , [ Hardin etA al. , 2007 ] , [ Hathout, 2002 ] , [ Herold etA al. , 2003 ] , [ Jat etA al. , 2008 ] , [ Jensen and Im, 2007 ] , [ Liu and Lathrop, 2002 ] , [ Maktav and Erbek, 2005 ] , [ Ridd and Liu, 1998 ] , [ Yang, 2002 ] and [ Yuan, 2008 ] ) , LULC rating ( [ Alphan, 2003 ] , [ Lopez etA al. , 2001 ] , [ Xiao etA al. , 2006 ] , [ Yang and Lo, 2002 ] and [ Yuan etA al. , 2005 ] ) , and old termurbannext term heat-island research ( [ Kato and Yamaguchi, 2005 ] and [ Weng, 2001 ] ) . In peculiar, RS-based multi-temporal old termlandnext term use old termchangenext term informations provide information that can be used for measuring the structural fluctuation of LULC forms ( Liu, Gao, A ; Yang, 2003 ) , which can be applied to avoiding irreversible and cumulative effects of old termurbannext term growing ( Yuan, 2008 ) and are of import to optimise the allotment of old termurbannext term services ( Barnsley A ; Barr, 1996 ) . In add-on, accurate an d comprehensive old termlandnext term use old termchangenext term statistics are utile for inventing sustainable old termurbannext term and environmental planning schemes ( [ Alphan, 2003 ] and [ Jensen and Im, 2007 ] ) . It is hence really of import to gauge the rate, form and type of LULC old termchangesnext term in order to foretell future old termchangesnext term in old termurbannext term development. Small is known about the spacial and temporal dimensions of the LULC old termchangesnext term that have shaped the old termurban expansionnext term of Greater Dhaka. Although most developed states have both recent and extended LULC information, the comparative deficiency of geospatial informations or entree thereto, is prevailing in developing states, peculiarly in Bangladesh. For case, aerial exposure are classified for the populace. The metropolis does non hold any official statistics on old termlandnext term usage forms, and the Master Plans do non incorporate either a map or quantitative information on the bing forms of old termlandnext term usage in the metropolis ( [ Islam, 1996 ] and [ Islam, 2005 ] ) . The old termlandnext term usage forms of Greater Dhaka were officially categorized in 1991 utilizing land observation informations ( Flood Action Plan ( FAP ) 8A, 1991 and [ Islam, 2005 ] ) . Due to the easiness of entree and recent nature of nose count records, the local autho ritiess of Dhaka often use nose count informations to construe old termlandnext term use old termchanges.next term As a consequence, the kineticss of development are non clear and frequently deceptive ( Talukder, 2008 ) . Numerous factors, including fiscal restraints, restricted entree to informations, bureaucratism and deficiency of geospatial expertness in the planning bureaus account for the absence of historical and current old termlandnext term usage informations. Furthermore, every bit many as 18 ministries are involved in the development and planning of Dhaka, and there is a general deficiency of coordination between these organic structures ( Mohit, 1991 ) . This empirical survey will try to place the spatio-temporal form of LULC old termchangesnext term for Greater Dhaka utilizing geospatial informations so that both the scientific community and determination shapers can measure the assorted kineticss impacting LULC old termchangesnext term in this old termurbannext term en vironment. The aims of this survey were therefore to research the features of LULC old termchangesnext term and qualify the underlying drive forces in the Greater Dhaka country by doing usage of remotely sensed informations and socio-economic information. Specifically, the aims are: ( a ) to clarify and measure the LULC old termchangesnext term between 1975 and 2003 ; ( B ) to research the spacial and temporal features of old termurban expansionnext term in this period ; and ( degree Celsius ) to analyse the drive forces of old termlandnext term use old termchange and urban expansion.next term Study country As shown in Fig.A 1, the survey country of Greater Dhaka is located in the centre of Bangladesh between 23A °68aˆ?N ( BTM 533233.91A m ) , 90A °33aˆ? E ( BTM 619052.83A m ) and 23A °90aˆ?N ( BTM 550,952.57A m ) , 90A °50aˆ? E ( BTM 642511.56A m ) , severally. Topographically, the country is level with a surface lift runing from 1 to 14A m ( Fig.A 1 ) , with most old termurbannext term countries located at lifts runing from 6 to 8A m ( FAP 8A, 1991 ) . The metropolis is situated chiefly on an alluvial patio, popularly known as the Modhupur patio dating from the Pleistocene period. The survey country is surrounded by four major river systems: the Buriganga, Turag, Tongi and the Balu, which flow to the South, west, north and east, severally. These rivers are chiefly fed by local rainfall and besides receive overflow from the well larger Ganges, Brahmaputra and Meghna rivers. The metropolis has a humid sub-tropical monsoon clime and receives about 2000A millimeter s of rainfall yearly, more than 80 % of which falls during the monsoon season from June to September. Life-size image ( 137K ) – Opens new window Life-size image ( 137K ) Fig.A 1.A Location of survey country. River webs, embankment and administrative units are draped over a digital lift theoretical account. Brightest countries represent higher lift ; bright grey represents average lift while dark pels show the lowest lift. Position Within Article The happening of heavy monsoon rainfall combined with floodwater overflow from the rivers environing the metropolis mean that Dhaka is really prone to monsoon implosion therapy. The metropolis has experienced a figure of lay waste toing inundations in recent times, with the inundations in 1988, 1998 and 2004 being the most terrible ( Alam A ; Rabbani, 2007 ) . Quantitative appraisals of the countries inundated by these flood events revealed that in 1988, 47.1 % of greater Dhaka were flooded, while in 1998 and 2004, about 53 % and 43 % countries were inundated ( [ Dewan etA al. , 2007 ] , [ Dewan and Yamaguchi, 2008 ] and [ Dewan etA al. , 2006 ] ) . The inundations caused harm to lodging and substructure amounting to US $ 2.2A m in 1988, 4.4A m in 1998 and 5.6A m in 2004 ( Ahmed, Gotoh, A ; Hossain, 2006 ) . The badness of inundation harm was considerable, even in 2004, which was considered more moderate of the three inundations, and which was believed to be the consequence of hapl ess old termurbannext term planning and renewal and development of natural countries, such as wetlands and low-lying countries, that would otherwise hold attenuated the implosion therapy. A survey utilizing hydrological record and RS-based LULC information has shown that inundation continuance and extent has increased well as a consequence of the extended old termurbannext term development on Lowlandss and flood plains of natural river channels ( Dewan A ; Yamaguchi, 2008 ) . It has been suggested that the exposure of Dhaka to deluge harm will increase due to continued unplanned old termurban expansionnext term ( Faisal, Kabir, A ; Nishat, 1999 ) and the consequence of clime old termchangenext term ( Alam A ; Rabbani, 2007 ) , and that these in bend will increase the agony to the dwellers of Dhaka and do extended harm to belongings in the part. Data and methodological analysis Data acquisition and readying Landsat informations ( MSS, TM and ETM+ ) were acquired and used to measure LULC old termchanges and urban expansionnext term in Dhaka. Geometric rectification was performed on all the images utilizing a Landsat TM image of the same country from 1997 as mention. At least 45 land control points ( GCPs ) were used to register the images to the Bangladesh Transverse Mercator ( BTM ) system. GCPs were dispersed throughout the scene, giving a RMS mistake of less than 0.5 pels. A first order multinomial tantrum was applied and images were resampled to 30A m end product pels utilizing the nearest neighbour method. All brooding sets were used in image categorization and the thermic set was excluded. In add-on, geospatial informations including municipal boundaries, route webs, geomorphic units and lift units were used to bring forth GIS beds from beginnings such as Survey of Bangladesh ( SOB ) topographical maps ( sheet no. 79 I 5 A ; 6 ) , municipal boundary map and geomorphic map ( Asaduz zaman, Nasreen, A ; Olsen, 1999 ) . Multi-year socio-economic informations were obtained from Bangladesh Bureau of Statistics ( BBS ) and published literature ( [ Islam, 1996 ] , [ Islam, 2005 ] and [ Siddiqui etA al. , 2000 ] ) . Reference informations, which varied given the retrospective nature of the survey ( Table 1 ) , were used for both developing country choice and for the rating of map truth. In add-on to utilizing high-resolution imagination, intensive fieldwork was conducted in the survey country from 6 February to 22 March 2003 to roll up land truth information for the analysis of the 2003 image. A hardcopy false colour composite ETM+ ( RGB 432 ) image picturing different LULC types was used in the field to place bing old termlandnext term screen characteristics, with particular attending given to spectrally similar characteristics. Based on this fieldwork, a land truth map was prepared for turn uping preparation pels on the image and 200 mention informations points were collected utilizing a planetary placement system ( GPS ) . This GPS information was so overlaid with the image in GIS to choose developing countries and for accuracy appraisal ; 100 of the GPS points were used for trying and the ot her 100 were used for measuring the truth of the categorization. Table 1. Different informations types used in this survey. Sl. No. Type of informations used Scale/resolution Year 1 Survey of Bangladesh topo-sheets 1: 50,000 1973, 1991 2 CUS old termlandnext term usage map 1: 10,000 1975 3 FAP 8A old termlandnext term usage map 1: 10,000 1991 4 Landsat MSS image 79A m 1975 5 SPOT Pan image 10A m 1989/90 6 Landsat TM image 28.5A m 1992 7 Landsat ETM+ image 28.5A m 2003 8 IKONOS Pan image 1A m 2003 9 Municipal boundary informations 1: 50,000 2001 10 Geomorphic map 1: 25,000 1999 11 Drain map 1: 25,000 2000 12 City Guide Maps 1: 20,000 1991, 2002 13 Socio-economic informations Annually and decadala 1973-2005 Full-size tabular array aA Census records. Position Within Article Image categorization A alteration of the Anderson Scheme Level I method was used to measure LULC old termchangesnext term in this survey ( Anderson, Hardy, Roach, A ; Witmer, 1976 ) . Specifically, extra factors such as the major old termlandnext term usage classs within the survey country and differences in the spacial declaration of the images, which varied from 30 to 79A m, were considered in planing the categorization strategy. Six separate LULC types were identified: H2O organic structures, wetlands/lowlands, built-up countries, cultivated old termland, following term flora and bare soil/landfill ( Table 2 ) . Table 2. old termLandnext term use/cover categorization strategy. old termLandnext term use/Cover Types Description Built-up Residential, commercial and services, industrial, transit, roads, assorted old termurban, following term and other old termurbannext term Bare soil/landfill sites Exposed dirts, landfill sites, and countries of active digging Cultivated old termlandnext term Agricultural country, harvest Fieldss, fallow old termlandsnext term and vegetable old termlandsnext term Vegetation Deciduous forest, assorted forest old termlands, following term thenars, conifer, chaparral and others Water organic structures River, lasting unfastened H2O, lakes, pools and reservoirs Wetland/lowlands Permanent and seasonal wetlands, low-lying countries, marshy old termland, following term rivulets and gully, swamps Full-size tabular array Position Within Article All orbiter informations were studied utilizing spectral and spacial profiles to determine the digital Numberss ( DNs ) of different LULC classs prior to categorization. Training samples were selected from the mention informations and accessory information ( Table 1 ) . Sixty to seventy preparation sites, runing in size from 286 to 7800 pels, were used to develop the images. Training samples included 5-10 subclasses for each category except for bare soil/landfill. The preparation samples were so refined, renamed, merged, and deleted after rating of the category histogram and statistical parametric quantities. A supervised upper limit likeliness categorization ( MLC ) algorithm, antecedently demonstrated to obtain the best consequences from remotely sensed informations if each category has a Gaussian distribution ( Bolstad A ; Lillesand, 1991 ) , was so applied to each image. However, several of the categories were falsely classified in the supervised categorization of LULC, with certain old termurbannext term colonies being misclassified as landfill sites due to their holding similar spectral features. Similarly, the wetland category was merged with the lowland category as it was non possible to divide them due to similar spectral belongingss, and the wetland/lowland class and cultivated old termlandnext term were besides falsely classified. Post-classification polish was hence used to better the truth of the categorization as it is a simple and effectual method ( Harris A ; Ventura, 1995 ) . In add-on, since the old termurbannext term surface is heterogenous and composed of a complex combination of characteristics ( e.g. edifices, roads, grass, trees, dirt, H2O ) ( Jensen, 2007 ) , assorted pels are a common job when utilizing medium-spatial declaration informations such as Landsat ( Lu A ; Weng, 2005 ) . The job of assorted pels was addressed in several ways. For illustration, thematic information ( e.g. H2O organic structures, flora, and bare dirt ) was foremost extracted from the Landsat informations utilizing the V-S-W index ( Yamagata, Sugita, A ; Yasuoka, 1997 ) , before a rule-based technique utilizing thematic information and GIS informations ( e.g. DEM, municipal maps and H2O organic structures, etc. ) was employed in ERDAS spacial modeller to rectify antecedently misclassified old termlandnext term screen c lasss. Although this rule-based technique greatly improved the MLC categorization, some misclassification between wetland and cultivated old termlandsnext term was still observed, chiefly because of the geographical adjacency of these classs. GIS tools, such as Area of Interest ( AOI ) were so applied to the informations utilizing ocular analysis, mention informations, every bit good as local cognition, to divide and recode these screens so that they more closely reflected their true categories. By using these techniques, the consequence obtained utilizing the supervised algorithm could be well improved. Finally, to cut down the salt-and-pepper consequence, a 3A A-A 3 bulk filter was applied to the classified old termlandnext term screens ( Lillesand A ; Kiefer, 1999 ) . Accuracy appraisal By and large, categorization truth refers to the extent of correspondence between the remotely sensed informations and mention information ( Congalton, 1991 ) . In order to measure the truth of old termlandnext term screen maps extracted from Landsat informations, a sum of 125 graded random pels were generated for the 1975 and 1992 informations and 100 pels for the 2003 old termlandnext term screen map. Accuracy appraisal of the LULC maps was so performed utilizing field informations and the geographical characteristics on old termlandnext term usage maps, high-resolution images, and SOB topographic maps, and the consequences were recorded in a confusion matrix. A non-parametric Kappa trial was besides used to mensurate the categorization truth as it accounts for all the elements in the confusion matrix instead than merely the diagonal elements ( Rosenfield A ; Fitzpatirck-Lins, 1986 ) . The entire truth of the Landsat-derived LULC information was 85.6, 89.6 and 90 % with matching Kappa statistics of 82.7, 87.5 and 87.9 % for MSS, TM and ETM+ , severally, confirming the standard truth of 85-90 % for LULC mapping surveies as recommended by Anderson etA Al. ( 1976 ) . The application of rule-based post-classification polish was found to be effectual and improved truth by 10-12 % . The MSS image had the lowest overall truth, which may be due to its harsh spacial declaration ( Haack, 1987 ) . Yang and Lo ( 2002 ) besides noted that the jobs associated with right sorting assorted pels additions with diminishing image declaration, ensuing in spectral confusion. In this survey, spectral confusion was higher in the MSS image than in the TM/ETM+ images. old termChangenext term sensing This survey employed the post-classification old termchangenext term sensing technique, which is efficient in observing the nature, rate and location of old termchanges, following term and has been successfully used by a figure of research workers in the old termurbannext term environment ( Hardin etA al. , 2007 ) . An overlay process utilizing the GIS was adopted in order to obtain the spacial old termchangesnext term in LULC during three intervals: 1975-1992, 1992-2003 and 1975-2003. Application of this technique resulted in a bipartisan cross-matrix, depicting the chief types of old termchangenext term in the survey country. Cross tabular matter analysis on a pixel-by-pixel footing facilitated the finding of theA measure of transitions from a peculiar old termlandnext term screen category to other old termlandnext term usage classs and their corresponding country over the period evaluated. A new thematic bed incorporating different combinations of â€Å" from-to † old termc hangenext term categories was besides produced for each of the three six-class maps. LULC old termchangesnext term and kineticss of old termurban expansionnext term Spatial forms of LULC old termchangesnext term in the Greater Dhaka country for 1975, 1992 and 2003 are shown in Fig.A 2. In 1975, lowlands, cultivated countries and H2O organic structures were the dominant old termlandnext term usage types, and the way of old termurban expansionnext term ( herein referred to as the built-up class ) was northerly. In 1992, the built-up class replaced most of the H2O organic structures and depressions within the metropolis every bit good as the cultivated old termlandnext term along the peripheral zone. Surveies of historical maps and the available literature suggest that the depressions and H2O organic structures within the metropolis disappeared comparatively rapidly after independency as countries were developed for residential, commercial, academic and concern intents ( Siddiqui etA al. , 2000 ) . Between 1975 and 1992, when route transit from Dhaka to the backwoods was improved by the building of Bridgess over the rivers ( Islam, 1996 ) , old ter murban expansionnext term extended further to the North, north-west and to the West. Consequently, the country of cultivated old termlandnext term and H2O organic structures declined markedly during the period 1975-1992 ( Louis Berger A ; BCL, 2005 ) . In 2003, the forms of LULC old termchangenext term revealed that Dhaka started to spread out in all waies, chiefly at the disbursal of vegetated and wetland/lowland countries. The rate of old termurbannext term invasion ( Fig.A 2 ) on other old termlandnext term utilizations increased significantly following the readying of a new Master Plan in 1995 and the development of substructure ( Siddiqui etA al. , 2000 ) . The building of a span over the Buriganga River accelerated old termurban expansionnext term in the southern and northwesterly waies. The spacial distribution of the exposed soil/landfill class is besides seeable in the maps produced ( Fig.A 2 ) , clearly exemplifying the transmutation of lowland countries to landfills on t he outskirts of Dhaka. Life-size image ( 292K ) – Opens new window Life-size image ( 292K ) Fig.A 2.A Classified old termlandnext term use/cover maps of Greater Dhaka in 1975, 1992 and 2003. Position Within Article Three sectors, viz. the populace, private, and individual-household sectors, are responsible for all of the old termlandnext term developments in Dhaka. Most of the old development undertakings were undertaken on an ad hoc footing by the populace sector, chiefly in countries that were antecedently used for agribusiness and that were free from flood ; illustrations of such developments include Gulshan Model Town, Banani, Uttara Model Town and Dhanmondi ( Chowdhury, 2003 ) . In recent old ages, belongings development has proliferated in Dhaka, and belongings developers have developed both wetlands and agricultural countries without any consideration of the attendant environmental costs. In add-on, single families have started to develop the peripheral countries ( Islam, 1996 ) . In the fieldwork conducted in this survey, old termlandnext term guess was observed to hold had a pronounced influence on the development of suburban countries. In response to increasing old termlandnext term m onetary values and turning demand for lodging, Lowlandss and agricultural countries in the periphery zone are quickly going built-up by the person and belongings developers. While suburban development is a really complex procedure that is known to be influenced by a assortment of factors, including guess and old termlandnext term monetary values, these factors may non adequately explicate the procedure of suburban development in the survey country. A more elaborate survey is hence required in order to understand the assorted factors act uponing suburban development in the greater Dhaka country. Furthermore, hapless coordination among executive bureaus is besides responsible for the decrease observed in natural resources in the survey country. For illustration, in the Dhaka-Narayangonj-Demra ( DND ) undertaking, despite about 6000A hour angles being set aside for agricultural production in the 1960s, the country has been used by local and migratory people for residential intents sinc e 1990s without any blessing from the governments concerned. Cases such as this illustrate the deficiency of effectual coordination among the organisations involved in the planning and development of Dhaka. Analysis of the LULC old termchangesnext term in Dhaka over clip revealed a considerable addition in the built-up countries over the survey period ; built-up countries increased by 6132A hour angle between 1975 and 1992, which is an norm of more than 360A haA yra?’1. Similarly, built-up countries increased in size by 4422A hour angle from 1992 to 2003, more than 400A haA yra?’1, and the net addition of old termurbannext term countries over the survey period was 10554A hour angle ( Table 3 ) . When compared with other metropoliss in the part, such as Ajmer City in India, the rate of the old termurban expansionnext term in Ajmer City was 29.2A haA yra?’1 over the period 1977-1989 and 32.4A haA yra?’1 from 1989 to 2002 ( Jat, Garg, A ; Khare, 2008 ) . Although urbanisation is by and large related to demographic old termchangenext term and economic growing ( Li, Sato, A ; Zhu, 2003 ) , the nature of old termurban expansionnext term in the survey country may besides be associated with other factors such as topography, old termlandnext term usage, and transit. Close scrutiny of the old termchangenext term sensing statistics revealed that about 6132A hour angle of the urbanised country in Dhaka were antecedently either agricultural countries or H2O organic structures between 1975 and 1992. Conversely, 4422A hour angle of the freshly urbanized countries were antecedently flora or wetlands during the same period. By and large, two factors were observed to hold promoted old termurbannext term growing: ( 1 ) increased economic activity associated with the constitution of economic zones ( e.g. export treating zone ) and ( 2 ) redefinition of the metropolitan country. Between 1975 and 1992, reclassification of old termurbannext term countries every bit good as infrastructural development played a important function in the old termexpansion of urbannext term countries. For case, the nor’-west and southerly old termexpansionnext term of th e metropolis occurred in response to building of a inundation embankment in 1992 ( Fig.A 1 ) and a span on the Buriganga River in 2001. The spacial features of built-up countries have besides been shaped by the building of a figure of transit paths in the same period, as understood from historical map analysis and field visit. The old termexpansionnext term to the E and nor’-east led to the development of unplanned suburbs in the Lowlandss and agricultural countries that were antecedently located in those countries. Table 3. Consequences of old termlandnext term use/previous termlandnext term screen categorization for 1975, 1992 and 2003 images demoing country of each class, category per centum and country changed. old termLandnext term use/cover types 1975 1992 1975-1992 country changed ( hour angle ) 2003 1992-2003 Area changed ( hour angle ) Area ( hour angle ) % Area ( hour angle ) % Area ( hour angle ) % Water organic structures 2976.1 7.2 2492.8 6.0 a?’483.3 2050.9 4.9 a?’441.9 Wetland/lowlands 13155.1 31.7 11646.8 28.0 a?’1508.3 9124.0 22.0 a?’2522.8 Cultivated old termlandnext term 12040.8 29.0 7934.3 19.1 a?’4106.5 8466.6 20.4 532.3 Vegetation 6585.2 15.8 5686.7 13.7 a?’898.6 3992.2 9.6 a?’1694.4 Built-up 5550.5 13.4 11682.4 28.1 6131.9 16104.6 38.7 4422.2 Bare soil/landfill 1256.2 3.0 2121.0 5.1 864.8 1825.7 4.4 a?’295.4 Entire 41564 100 41564 100 41564 100 Full-size tabular array Position Within Article The GIS analysis besides revealed that the country occupied by H2O organic structures decreased by 16.2 % , wetlands by 11.5 % , cultivated old termlandnext term by 34.1 % , and flora by 13.6 % between 1975 and 1992. Another important old termchangenext term was the diminution in wetlands and flora from 1992 to 2003. In 1992, wetlands and flora occupied 28 % and 13.7 % of the entire survey country, but by 2003, these countries had declined to 21.7 % and 5.5 % , severally. Conversely, built-up countries increased in size by 37.9 % in the period from 1992 to 2003. A little addition in cultivated old termlandnext term ( 6.7 % ) was besides observed in this period. The diminution of flora and wetlands was clearly due to intensification of old termurbannext term development in the greater Dhaka country, peculiarly through the procedure of suburban development. As shown in Table 4, there has been a pronounced old termchangenext term in LULC over the 28-year survey period. Table 4. Major old termlandnext term use/cover transitions from 1975 to 2003. ‘From category ‘ ‘To category ‘ 1975-1992 Area ( hour angle ) 1992-2003 Area ( hour angle ) Water organic structures Built-up 655.7 269.5 Bare soil/landfill 71.4 82.7 Wetland/lowland Built-up 660.0 1414.7 Cultivated old termlandnext term 2007.8 2743.6 Bare soil/landfill 416.8 492.5 Cultivated old termlandnext term Built-up 3944.3 2309.0 Bare soil/landfill 794.7 391.8 Vegetation Built-up 1725.1 1069.1 Cultivated old termlandnext term 932.4 1387.5 Bare soil/landfill 333.7 287.3 Bare soil/landfill Built-up 453.8 1047.4 Full-size tabular array Position Within Article The post-classification comparing of old termchangenext term sensing was carried out utilizing GIS, bring forthing old termchangenext term maps for understanding the spacial form of old termchangenext term between old ages ( Fig.A 3 ) . Table 4 shows a sum-up of the major LULC transitions, viz. ‘from-to ‘ information, which occurred during the survey period. As indicated, the bulk of old termurban landnext term was acquired by change overing countries that were antecedently agricultural old termland, following term flora, H2O organic structures or low-lying countries, proposing the being of increased force per unit area on natural resources in Greater Dhaka to run into the increasing demand for old termurban land.next term Life-size image ( 247K ) – Opens new window Life-size image ( 247K ) Fig.A 3.A Major old termlandnext term use/conversions in Greater Dhaka ( a ) 1975-1992 ( B ) 1992-2003. Position Within Article The survey revealed that the old termurban expansionnext term in Dhaka has been comparatively rapid and has resulted in widespread environmental debasement. The procedure of old termurban expansionnext term in Dhaka was observed to change markedly over the old ages examined in this survey ; specifically, the metropolis expanded by 6131.9A hour angle during the 17-year period from 1975 to 1992 and 4422.2A hour angle in the 11-year period from 1992 to 2003. Landsat images revealed that old termurban expansionnext term in two periods examined in this survey did non happen equally in all waies ; new developments were observed along the fringe of old termurbannext term countries every bit good as in the countries that had already been urbanized. The rapid gait of urbanisation in Dhaka means that it has non been possible for the municipal authorities to supply basic old termurbannext term comfortss to the population, which has led to a broad scope of environmental jobs. For illustration, old termurbannext term development facilitated by old termlandnext term filling has been shown to hold a negative impact on natural home ground and biodiversity ( [ Alphan, 2003 ] and [ Dewidar, 2002 ] ) . Vulnerability to temblor related jeopardies has besides increased since a major part of Dhaka ‘s recent development has taken topographic point in landfill sites ( Kamal A ; Midorikawa, 2004 ) . In southern Dhaka, landfills have contributed to dirt y pollution, ensuing in reduced flora ( Khatun A ; Hoque, 1994 ) . Uncoordinated urbanisation and the creative activity of landfill sites have intensified the extent of flood in the metropolis during the moisture season ( Alam A ; Rabbani, 2007 ) , which is peculiarly critical in the western parts of Dhaka ( Maathuis, Mannaerts, A ; Khan, 1999 ) . Flood hazard potency has been elevated due to continued infilling of H2O organic structures, wetlands and low-lying countries ( Dewan A ; Yamaguchi, 2008 ) . In add-on, the speed uping growing of slums is impacting the metropolis ‘s physical and human environment. Harmonizing to CUS etA Al. ( 2006 ) , the slum population of Dhaka ( about 37 % of the metropolis ‘s population ) has doubled in a decennary, to make 3.4 million in 2006 from 1.5 million in 1996. The environment of these informal colonies is highly unhygienic as they are in close propinquity to solid waste mopess, unfastened drains and cloacas, embankments, and al ong railroad lines ( Islam, 1999 ) . Consequently, the people populating in slums are highly vulnerable to inundations ( Rashid, 2000 ) and they besides suffer from an acute deficit of drinkable H2O ( Akbar, Minnery, Horen, A ; Smith, 2007 ) . Driving forces analysis LULC old termchanges and urban expansionnext term of Greater Dhaka is governed by a combination of geographical, environmental and socio-economic factors. Although population growing is the primary cause for rapid urbanisation, the part of other causes such as economic development and physical factors besides needs to be assessed. To measure the mechanisms underlying the old termchangesnext term in LULC and subsequent old termurban enlargement, following term we performed a arrested development analysis of built-up countries utilizing selected physical and socio-economic variables ( lift, incline, population and GDP ) , and presented the consequences in Table 5. old termUrbannext term country informations were extracted from one-year BBS statistics since RS informations merely cover three old ages. To analyze the effects of incline and lift on old termurban enlargement, following term average values of incline, and lift of both developed and developing countries in the metropolis wer e calculated from a digital lift theoretical account. Socio-economic informations, such as population and GDP values were obtained from the decadal and annually one-year tabular arraies of the Bangladesh Bureau of Statistics ( Table 1 ) . Table 5. Regression analysis of factors underlying old termurban expansion.next term Driving factors Coefficients Robust criterion mistake T pA gt ; A |t| Population 1.776 0.633 2.808 0.019 GDP 0.0001 0.000 4.730 0.001 Elevation 0.549 0.295 1.861 0.092 Slope 0.028 0.057 0.494 0.404 Changeless a?’5.058 5.811 a?’0.870 0.404 Full-size tabular array R2A =A 0.947 ; ( ProbA gt ; A FA =A 0.000 ) ; Dependent variable: Built-up country. Position Within Article Census informations indicate that the old termurbannext term population of Dhaka was merely 0.34 million in 1951, increasing to 2.6 million in 1974 with an one-year growing rate of 9.32 % during 1961-1974 ( Islam, 1999 ) . By 1981, the population had reached 3.44 million. The population reached 6.92 million in 1991 and 10.7 million by 2001 ( BBS, 2001 ) . Presently, the population of Dhaka is more than 12 million with an one-year mean growing of 5 % , compared to the national growing of 2.1 % ( Bangladesh Bureau of Statistics ( BBS ) , 2005 and [ The World Bank, 2007 ] ) . The rapid growing of the old termurbannext term population has chiefly resulted from rural-previous termurbannext term migration and estimates show that more than 60 % of people in Dhaka have migrated from rural countries ( Islam, 1991 ) . Intelligibly, this addition in the population had the consequence of increasing force per unit area on the limited resource-base, and significantly contributed to the old termexp ansion of urbannext term countries by glade of natural flora and infilling of low-lying countries. Table 5 clearly shows that old termurban expansionnext term is positively related to population growing. Dhaka ‘s economic development is another factor that has contributed to rapid urbanisation. For illustration, Dhaka ‘s gross domestic merchandise ( GDP ) was about 11,312 million Taka1 in 1976, 129,665 million Taka in 1992 and 162,490 million Taka in 1995. Presently, the GDP of Dhaka is 354,240 million Taka and the metropolis ‘s portion of the national economic system is 19 % ( BBS, 2005 ) . The economic development associated with the roar in ready-made garments since the 1980s has had a important impact on old termexpansionnext term of the metropolis country. This economic activity has besides resulted in a big inflow of rural-previous termurbannext term migrators in the same period ( Islam, 1996 ) . In add-on, Dhaka supports more than 40 % of Bangladesh ‘s industry, farther suggesting that the economic development and industrialisation has led to a higher rate of old termurban expansion.next term The arrested development analysis revealed that GDP exercised positive effects on old termurban land expansionnext term ( Table 5 ) . As in other old termurbannext term centres, the way of old termurban expansionnext term in Dhaka has been extremely influenced by its physical scene, peculiarly its topography. The four major rivers, swamps and depressions within and around the metropolis have ever played a polar function in the development of built-up countries in the metropolis. Urbanization ab initio occurred in the elevated countries that were non affected by inundation. Once all the elevated places had been developed, the lifting demand of old termurban landnext term has been met by the transmutation of low-lying countries, vegetated countries and wetlands. The development of wetlands, for case, has led to a significant loss of natural resources and an addition in habitat debasement. The growing of belongings developers has accelerated invasion of old termurbannext term countries on wetlands and threatens biodiversity. Two geophysical indexs were used in the arrested development analysis ( Table 5 ) and found th at lift has major influence on old termurban expansionnext term while incline has non passed the important trial. Decisions This survey has assessed LULC old termchangesnext term and the kineticss of old termurban expansionnext term in Greater Dhaka, Bangladesh utilizing RS informations in concurrence with socio-economic variables. old termUrban expansionnext term was quantified for the last 28 old ages utilizing the post-classification comparing technique. Greater Dhaka was found to hold experienced rapid old termchangesnext term in LULC, peculiarly in built-up/previous termurbannext term countries. Analysis revealed that old termurbannext term countries increased by 6131A hour angle during 1975-1992 and 4422A hour angle from 1992 to 2003, which resulted in a significant decrease in the country of H2O organic structures, flora, cultivated countries and wetlands/lowland. The dramatic old termexpansion of the urbannext term countries of Dhaka exhibited clear spatio-temporal differences. The transition of H2O organic structures, flora and low-lying countries to old termurban landnext term has caused extende d and varied environmental debasement in the survey country, and the exposure to implosion therapy and the growing of slums have been the chief negative results associated with the rapid old termurbannext term development. old termUrban land expansionnext term has been mostly driven by lift, population growing and economic development. Integrated usage of GIS, RS and socio-economic informations could therefore be efficaciously used to understand the spatial and temporal kineticss of LULC old termchanges.next term The reading and categorization of RS informations were utile for gauging the rate and spacial form of the old termurban expansionnext term in Greater Dhaka of Bangladesh. As dependable and current informations are missing for Bangladesh, the old termlandnext term usage maps produced in this survey will lend to both the development of sustainable old termurban landnext term usage planning determinations and besides for calculating possible hereafter old termchangesnext term in growing forms.