Unit 4 Case Project Qeustions Coursework Example | Topics and Well Written Essays - 250 words

Unit 4 Case Project Qeustions - Coursework Example In the meeting, they became more anxious about security threats since they had recently noticed curious events occurring on the network. They also told you that another consultant told them they would have to abandon RIP to be able to use VLSM. They want a second opinion, so they have hired your company. The company does not expect significant growth of employees in the next five years, but they are interested in updating its capabilities and better secure it. Hogan Enterprises’ move to Variable-Length Subnet Masks (VLSM) is a great idea. Hogan Enterprises has Routers that support VLSM with RIP v2.VLSM addressing scheme will allow growth, and it does not entail wastage of addresses especially on point-to-point links. VLSMs enable secure control on the addressing scheme. Class C, for example, with default subnet mask when used contains 256 addresses in one subnet. VLSM allows adjustment of the subnets and addresses number depending needs of a specific network. VLSM features enable a single autonomous system that integrates networks with several subnet masks. Routing protocols that allow VLSM usage of 30-bit subnet mask for network connections (255.255.255.252); 24-bit mask in user networks (255.255.255.0),or 22-bit mask (255.255.252.0), on networks with a maximum of 1000 users. Hogan Enterprises’ idea of abandoning RIPv1, for RIPv2, is good despite it being suitable routing protocol due to its universal compatibility (supported by most IP routers). The protocol has the following limitations: The consultant was wrong for the advice on leaving RIP, Hogan Enterprises should embrace RIPv2. RIP v2 incorporates prefix routing, that allows it sending subnet data (information) with a route update. It allows use of classless routing whereby different subnets within a given network are able to utilize different subnet masks (VLSM). RIPv2

Causes and Treatments of Dengue fever

Causes and Treatments of Dengue fever Abstract Dengue fever is caused by positive-stranded RNA virus of the family Flaviviridae; genus  Flavivirus. Dengue virus is transmitted to humans by a mosquito vector Aedes aegypti belonging to genus Aedes of family Culicideae. 50 -100 million peoples are affected by dengue virus . Indian scientists have develop a vaccine for the prevention of the dengue fever. Dengue Virus Genome Contain 10 Viral Protein C,prM,E,NS1.NS2A,NS2B,NS3,NS4A,NS4B,NS5. vector population suppression ,replacement are genetic approaches for control of dengue. In the population suppression vector number is reduced to minimize disease transmission and population replacement of wild-type vector was replaced with genetically modified vector incapable of transmitting the disease. Sterile Insect Technique (SIT) is a particular type and environmentally benign way to suppress the insect population, it is based on collective farming, and radiation-mediated sterilization, and large number of male insects are release. The rel ease of insects carrying a dominant lethal (RIDL) offers a resolution to many of the weaknesses of traditional SIT which has narrow its application in mosquitoes while sustaining the efficacy ecologically friendly and specific types. RNA interference is a mechanism of gene control sequence after transcriptional selectively. RNA viruses Interference (RNAi) pathway is one of the most critical components of the innate immune system of insects that can frustrate a variety of RNA virus such as flavivirus. From all the genetic based method RIDL techniques is most advance. Introduction: Dengue fever is a viral disease transmitted by the rapid development of Aedes aegypti. (McCall and Kittayapong 2006) originally innate to West Africa and spread in the whole world (Antonelli, Clayton et al.) 50 -100 million peoples are affected by dengue virus (Wilke and Marrelli 2012). Dengue virus belongs to the Flaviviridae family. Dengue virus has four major serotypes but antigenically distinct single stranded RNA viruses . The four serotypes of dengue viruses cause disease. The severe form of the disease, dengue hemorrhagic fever (DHF) and dengue shock syndrome (DHF / DSS), can lead to internal bleeding and even death. (Malavige, Fernando et al. 2004; Olson, Alphey et al. 2006) There is no specific therapeutic drug available for dengue fever. Indian scientists have develop a vaccine for the prevention of the dengue fever animal trials of this vaccine have yielded good results but it is not yet commercialize. By Using yeast pastoris Pichia they have created a non-infectious dengue fever virus like particles made of only large DENV protein envelope to active virus-specific immunity. (Thisyakorn 2013). Dengue virus is 50-nm containing lipid membrane.180 identical copies of envelop protein is present at the surface of viral membrane short transmembrane segment. The virus genome is of about 11000 bases that translates into a single large polyprotein that is cleaved into 3 structural and 7 non-structural genes and short non-coding regions is also present on both the 5 and 3 ends The structural proteins are the capsid (C) protein, the envelope (E) glycoprotein and the membrane (M) protein. (Alcaraz-Estrada, Yocupicio-Monroy et al. 2010) (Nukui, Tajima et al. 2006) The increase of vectors in world is reason of emergence of diseases in new areas. therefore, there is need to control mosquito. Bed nets, space spraying are largely ineffective against this day biting mosquito. Therefore, there is a need to develop useful strategy to overcome dengue fever. Dengue control can be reduced or elimination of the vector population. The population vector can be reduced or eliminated based on genetic methods. There are two strategic objectives to control dengue by genetically modified mosquitoes.(McCall and Kittayapong 2006; Olson, Alphey et al. 2006) vector population suppression population replacement. In the population suppression vector number is reduced to minimize disease transmission and population replacement of wild-type vector was replaced with genetically modified vector incapable of transmitting the disease.(Antonelli, Clayton et al.) suppression techniques and replacement of population are not mutually exclusive and can be implemented in conjunction with other approaches. (Olson, Alphey et al. 2006; Organization 2009) For suppression of the vector population SIT (sterile insect technique) SIT is a specific control environment of the species method in which large numbers of sterile males are release these mate with wild female reduces the reproductive capacity of mosquito. (Coleman and Alphey 2004; Helinski, El-Sayed et al. 2006) SIT mosquito control approaches have been tense and still planned .Reduction mating competitiveness, and sterile female does not reduce the population ,fertility of irradiated males residual is the limitation of the approaches to mosquito control SIT. In SIT male mosquitoes are about liberation are not taking blood meals, and lethality performance so early larval death is density dependent reduction occur. (Yakob, Alphey et al. 2008; de Valdez, Nimmo et al. 2011; Lacroix, McKemey et al. 2012) RIDL (Release of Insects carrying a Dominant Lethal) strategy to reduce these limitations by recombinant DNA technology. In RIDL male n female mosquitoes are genetically modified approaches. (Coleman and Alphey 2004; Atkinson, Su et al. 2007; Phuc, Andreasen et al. 2007) OX513A RIDL bisex is a strain. The males are released to mate with wild females. The offspring of these mating die due to late larvae or pupae. Thus the target population can be reduced. (Wallace 2013) In female transgenic mosquitoes OX3604C that genes are present to conduct flightless female-tetracycline-repressible phenotype. flightless females can not mate with a male. (de Valdez, Nimmo et al. 2011; McGraw and ONeill 2013) And for substituting additional vector population or foreign genes are inserted to prevent the transmission vector of the disease. Foreign gene can be a gene Antipathogen, or a combination of transgenic approaches that will reduce or eliminate the transmission of disease from vectors to human.(Basu and Bhattacharya 2014) Genetic approaches leading to vector population suppression: GMV-based development of Sterile-Insect Technique (SIT): The sterile insect technique (SIT) is a specific method of species and environmentally benign control the insect population that relies on mass rearing and release of sterile insects.(Wilke and Marrelli 2012) These released insects compete for mates with wild females. Wild female pairing to a sterile male has no or fewer children, so that the population tends to decrease. If enough sterile insects are released for a sufficient period, the target population is controlled or even eradicated locally(Wallace 2013). SIT has been used successfully for over 50 years to control the entire area and / or elimination of several important agricultural pests and disease vectors, including the Mediterranean fruit fly, screwworm. (Coleman and Alphey 2004)Although conducted a series of tests in the 1970s, with some success, there is today no SIT programs on large-scale operation against mosquito species. (Yakob, Alphey et al. 2008; Lacroix, McKemey et al. 2012; Mwasunda October, 2012) Ae. aegypti is a, mosquito species fit for mass rearing. This species also appears to be reasonably uniform over large areas, without the problems of sub-species and barriers to mating. SIT has many advantages as compare to traditional strategies: it is species specific and to stay away from The harmful effects of pesticides on non-target species. The mating behavior of male insects is highly efficient as a substitute of relying on Human rights activists. wild insects Density are condensed that’s why it works better (Coleman and Alphey 2004) LIMITATION of SIT: The main problem of SIT is the loss of competitiveness mating for the wild type due to sterilization of insects by irradiation. For mosquitoes, releasing only male is considered essential, since the sterile females bite and can thus transmit the disease, while male mosquitoes do not bite. So SIT including large-scale, gender-based separation . pupal size can constantly give people male-only population for release. A key difficulty for mosquito SIT is sterilization. Irradiation of pupae appear to harm insects; irradiation as adults is less harmful but operationally much harder. Some trials used sterilizing chemicals such as thiotepa, which was effective for sterilization, but led to trace contamination with this mutagenic chemical. Another problem for mosquito SIT relates to the biology of the mosquito population. Unlike agricultural pests against which the main SIT programs are directed at present, mosquito populations can be regulated primarily by density-dependent effects, in which a very fruitful population is maintained at a level stable for limited resource constraints, others problems of SIT is fitness costs and operational difficulty of irradiation.(Coleman and Alphey 2004; Olson, Alphey et al. 2006; Wilke and Marrelli 2012) Release of Insects Carrying a Dominant Lethal Gene: Insects are designed to carry a dominant lethal genetic system can be used to replace the need for radiation sterilization in a similar SIT program. In this RIDL is replaced engineered lethal dominant. At the same time RIDL and SIT, and some or all of the descendants of people die as a result of the release of inheriting one or more dominant lethal mutations, so that the population tends to decline. (Atkinson, Su et al. 2007; Yakob, Alphey et al. 2008; Massonnet-Bruneel, Corre-Catelin et al. 2013) Mechanism: Male mosquitoes have developed genetically modified to contain lethal gene, in order to combat the spread of dengue fever. LA513 is piggyBac transposon-based non-independent from 8.4 kilobytes. Insert LA513 transposon within aeydes mosquitoes by genetic engineering techniques to produce toxins in the larvae of mosquitoes stage under normal condition, and thus cause the death of the larva. Transposon LA513 mainly containing DsRed2 gene that is to engage in the modified identify genetically by red fluorescence due to the expression of that gene. and tTAV gene (tetracycline -repressible transcriptional activator) tTAV gene is under the control of its binding site, titO, and minimal promoter of Drosophila HSP70, and 3 UTR sequence of the fruit fly FS (1) K10. tTAV bind with its binding site titOs and gives a very high level of expression of tTAV which is toxic under normal conditions. In The presence of tetracycline tTAV connect with them. This model does not bind tTAV with titO and do not even lead to the expression of more tTAV therefore this construction gives a very high level expression of tTAV in the absence of tetracycline, but gives low expression in the presence of tetracycline. The high level expression of tTAV may be due to the interaction with the VP16 domain transcription factor that provides a key to the building of this deadly system. (Massonnet-Bruneel, Corre-Catelin et al. 2013) When genetically modified mosquitoes are released in the wild and mate with wild female offspring to inherit this trait lethality. The resulting offspring die before reaching the age of majority and the local mosquito swarms fall.(McGraw and ONeill 2013) Oxitec is a British company is working to find innovative solutions to control insects using biotechnology and genetics in advance (called RIDL) placed Egyptian genetically modified Aedes this product and is named as a OX513A bisex RIDL strain. (Massonnet-Bruneel, Corre-Catelin et al. 2013) Aeydes mosquito, one of the most important carrier of the dengue fever,and decreased by 80% in the 2010 trial of these genetically modified mosquitoes in the Cayman Islands. Using genetically modified male aegypti we can reduce or eliminate the population of mosquitoes that specie, and thus we can control the transmission of dengue virus to humans, which causes dengue fever. Population replacement techniques: Population replacement techniques involve the insertion of additional or foreign genes to prevent the mosquitoes from transmitting the disease. The techniques may include inserting an antipathogen gene, an immune system upregulator, or a combination of transgenic approaches that will ultimately result in the reduction or elimination of disease transmission from mosquito to human. To assess whether a mosquito has reduced disease transmission capability, the virus titer in the experimental transgenic mosquitoes midgut and salivary glands can be measured and compared to a wildtype control. At least three genetic-transformation systems have been described and used successfully in Ae. aegypti to generate GMVs. These transformation systems are based on the Class II TEs Mos1 (Mariner), Hermes and piggyBac . Mos1 and piggyBac are the most commonly used TEs mos1 for generating GMVs. Evidence of rnai mechanism in mosquitoes: List the RNAs strategy Interference with the recurrence of dengue virus can operate Effective in mosquitoes and mosquito cells. The first evidence is recombinant Sindbis viruses having DENV-2-prM sequence was transformed in to in adult female mosquitoes. Sindbis viruses is single-stranded RNA virus. During replication it is convert in to double stranded RNA and intermediary expressing DENV-2 prM that is activate the RNAi mechanism . Combination of DENV-2 and the recombinant SINV having DENV-2-prM sequence slabs DENV replication in mosquitoes. in mosquito cell culture Expression of a dsRNA hairpin structure is a strong Catalyst of the RNAi mechnism. 567 nucleotide of the prM sequence from DENV-2 in a sense orientation and first 290 nt repeated in antisense orientation is made hairpin structure .cloned this into plasmid after transcription DENV-2 specific dsRNA is formed that stop the DENV-2 replication. transfection of C6/36 (Aedes albopictus) with dsRNA of arbovirus genome.these are the evidence which shows that Aedes species have RNAi mechanism resemble to other organisms. RNAi Mechnism : In RNAi mechanism dsRNA is integrate in The cytoplasm of the cell. RNase III enzyme Dicer is responsible to digest dsRNA in a small interfering RNA 21-23 BP (RNAs siRNAs). These double stranded siRNAs having two nucleotides over hangs at both of the 3’ends. Then siRNAs is unwounded in a single stranded by the enzyme complex called the RNA-induced silencing complex,(RISC).one strand act as RISC-targeting co-factor. siRNA having RISC binds with complementary mRNA. cleavage in the middle of the siRNA binding region by RISC is occur .then mRNA Is degrade by natural endogenous mechanisms. RNAi mechanism for dengue control: Sà ¡nchez-Vargas and collegues proved that RNAi paly a important role in the reduction of dengue infection. AAV (adeno-associated virus )siRNA infected the dendritic cells and decrease Dengue infection in human. Mosquito cell line transformed culture (C6 / 36, A. albopictus) by way of plasmid Which contain the inverted sequence of PRM gene of dengue And form dsRNA 290-BP. These transformed cells contain resistance to the dengue virus 2. When these cells are infected with dengue virus -2 viral RAN collection is not occur. These transformed mosquitoes cells Containing all the machines of RNAi. This finding proved that RNAi play a important role in reduction of dengue virus 2. Transposon ,that contain the inverted repeat sequence of prM gene of dengue virus is transformed in mosquito embryo along with carboxypeptidase A Promoter .after the intake of bloodmeal of mosquitoes dsRNA 578-BP is produce. When genetically modified Mosquito Carb 77 stuck With DENV2 having bloodmeal dsRNA is expressed along virus replication. thus preserving the Spreading of the virus from the host to the salivary Glands. RNAi mechanism is accountable for the resistance of DENV2. SiRNA-mediated silencing of receptors and Facility clathrin mediated endocytosis can prevent entry of Dengue virus .The proliferation of HepG2 cells, reducing the Virus. inhibit the dengue fever to develop into serious forms .Specified cellular genes involved in endocytosis operations And the dynamics of the cell structure, the task of infection DENV. SiRNA directing genes linked with clathrin mediated endocytosis. Villegas-Rosales et al. projected three siRNAs that have ability to silence the four DENV serotypes genome By pointing NS4B and NS5 sequences . SiRNA along with RNAi self-processing machinery have a role in the preclusion of unadorned dengue infection. In the development of new therepuetical drugs RNAI can play an imporatn role .

Who Is Responsible For Duncans Death? Essay -- essays research papers

We certainly know that the direct responsible for Duncan’s death is Macbeth. However this does not necessarily mean he is to blame, for his violent death is obviously the consequence of certain influences that forced Macbeth to perform his fatal deed. Furthermore, to unearth the truth about who is really the guilty for Duncan’s murder we must explore the influences the different characters have on Macbeth’s impulses and the overall scenario of the slaying. Firstly, we shall consider Lady Macbeth and Macbeth as they are the two who planned and performed the murder. Although after the witches told Macbeth that he was to be king and he was burning in desire to be so he, on first instance, decided that if fate had determined that he was to be the sovereign of Scotland he shouldn’t try to be reach the throne by his own actions, that it would come eventually: â€Å"If Chance will have me king, why, Chance / may crown me, / Without my stir†. However, it was Lady Macbeth who convinced him to slay the king so that he could usurp the throne: â€Å"Hie thee hither, / That I may pour my spirits in thine ear†. So we can say that Lady Macbeth has more responsibility on Duncan’s murder than Macbeth himself as she used her position as a wife and a woman to induce his husband to the sin. She knew the â€Å"adoration† Macbeth had for her (â€Å"My dearest love† referring to Lady Macbeth) and used her status of w oman to judge Macbeth a coward if he didn’t kill Duncan. Even though Macbeth holds some blame for not...

Ocean Thermal Energy Conversion Otec Environmental Sciences Essay

The oceans cover a little more than 70 per centum of the Earth surface. This makes it the universes largest solar energy aggregator and energy storage system. On an mean twenty-four hours, 60 million square kilometres if tropical seas absorb and sum of solar radiation equal in heat content to about 250 million barrels of oil. The history of world, have depended upon its ability to suppress the forces of nature, and to use these forces to function its demands. Energy engineering is surely one of the most of import factors in the outgrowth of world as the dominant species of this works. The innovation of the practical steam engine by James W, brought about development of big mills, steam ships and the steam engine. First wood was used, so coal. About the same clip, the usage of coal instigated progresss in metallurgy.petroleum from natural ooze has been used since ancient times for lighting, lubrication and sealing. The debut of boring for oil greatly increased the supply of oil. The i ndustrial revolution switches in to high cogwheel. One job is that the natural ooze is limited and in a few old ages the elements will be used. The development of atomic power was touted as the replies to all world ‘s energy sufferings. It non turned out that manner. The riddance of authorities subsidies for atomic power workss has made them rather unaffordable. When it went so bad no insure in the universe will compose catastrophe for atomic power works The construct of OTEC ( ocean thermal energy transition ) has existed for over a century as fantasised by Jules Verne in 1870 and conceptualised by Gallic physicist, Jacques arsene 500 arsonval in 1881. Despite this an operating OTEC power installation was non developed until the 1920 ‘s. 2.2 WHAT IS OTEC OTEC, ocean thermic energy transition is an energy engineering that converts solar radiation to electric power. OTEC systems use the ocean ‘s natural thermic gradient, accordingly the temperature difference between the warm surface H2O and the cold deep H2O below 600 meters by about 20'c, an OTEC system can bring forth, a significantly sum of power. The oceans are therefore a huge renewable resource ; with the potency to assist us in the OTEC procedure is besides rich in foods and it can be used to civilization both marine being and works life near the shore or on land The entire inflow of solar energy into Earth is of 1000s of clip as a great as world entire energy usage. All of our coal, oil and natural gas are the consequence of the gaining control of solar energy by life of the yesteryear. There have been, any undertakings for tackling solar energy, but most have non been successful because they attempt to capture the energy straight. The thought behind OTEC is the usage of all a natural aggregators, the Se, alternatively of unreal aggregator. 2.3 HOW OTEC WORKS Warm H2O is collected on the surface of the tropical ocean and pumped by a warm H2O pump. The H2O is pumped through the boiler, where some of the H2O is used to heat the working fluid, normally propane or some similar stuff. The propane vapor expands through a turbine which is coupled to a generator that bring forthing electric power. Cold H2O from the underside is pumped through the capacitor, where the vapor returns to the liquid province. The fluid is pumped back into the boiler. Some little fraction of the power from the turbine is used to pump the H2O through the system and to power other internal operations, but most of it is available as net power. There are two different sorts of OTEC power workss, the land based and the natation works. First, land based power workss, the land based pilot works will dwell of a edifice. This edifice will incorporate the heat money changers, turbines, generators and controls. It will be connected to the ocean via several pipes, and an tremendous fish farm ( 100 football countries ) by other pipes. Warm H2O is collected through a screened enclosure near to the shop. A long pipe laid on the incline collects cold H2O. Power and fresh H2O are generated in the edifice by the equipment. Used H2O if first circulated in to the marine civilization pool ( fish farm ) and so discharges by the 3rd pipe in to the ocean, downstream from the warm H2O recess. This is done so that the escape does non reenter the program, since rhenium usage of warm H2O would take down the available temperature difference. While, the other OTEC power workss is drifting power workss, the drifting power works works in the same mann er as the land based the evident different is that the natation works is drifting. Where really OTEC can be used, OTEC can be sited anyplace across about 60 million squares kilometers of tropical oceans anyplace there is deep cold H2O lying under warm surface H2O this by and large means between the tropic of malignant neoplastic disease and the tropic of Capricorn. Surface H2O is these parts, warmed by the Sun, by and large stys at 25 grades Celsius or supra. Ocean H2O more than 1000 metres below the surface is by and large at approximately 4 grades C.2.4 TYPES OF OTECThere are three types of OTEC designs: unfastened rhythm, closed rhythm and intercrossed rhythm.Closed rhythm Closed rhythm systems use unstable with a low boiling point, such as ammonium hydroxide, to revolve a turbine to bring forth electricity. Here how it works. Warm surface sea H2O is pumped through a heat money changer where the low boiling H2O point is vaporized. The spread outing vapor turns the turbo generator, so ball, deep saltwater pumped through a 2nd heat money changer condenses the vapor back into a liquid, which is so recycle through the system Open rhythm Open rhythm OTEC uses the tropical oceans warm surface H2O to do electricity. When warm saltwater is placed in a low force per unit area container, it boils. The spread outing steam drives a low force per unit area turbine attached to an electrical generator. The steam, which has left its slat behind in the low force per unit area container, is about pure fresh H2O. It is condensed back into a liquid by exposure to cold temperature from deep oceans H2O Hybrid rhythm Hybrid system combines the characteristic of both the closed rhythm an unfastened rhythm system. In a intercrossed system, warm saltwater enters a vacuity chamber where it is brassy evaporated into steam, similar to the unfastened rhythm vaporization procedure. The steam vaporizes a low boiling point fluid that drives a turbine to bring forth electricity2.5 ADVANTAGES AND DISADVANTAGES OF OTECThe advantages of OTEC is the utilizations OF OTEC is clean, renewable, its natural resource. Warm surface saltwater and cold H2O from the ocean deepnesss replace fossil fuels to bring forth electricity. Second, its appropriately designed OTEC workss will bring forth small or no C dioxide or other pollutant chemical Third, OTEC system can bring forth fresh H2O every bit good as electricity. This is a important adapted in island countries where fresh H2O is limited, other there is adequate solar energy received and stored in the warm tropical ocean ‘s surface bed to supply most, if non all, of present human energy demands and last the usage of OTEC as a beginning of electricity will assist cut down the province about complete dependance on imported fossil fuels. The disadvantages of OTEC is produced electric at present would be more than electricity generated from fossil fuels at theirs current costs. Second, OTEC workss must be located were a difference of about 20 ; degree Celsius occurs twelvemonth unit of ammunition. Ocean deepnesss must be available reasonably near to shore based installations for economics operation. Floating works ships could supply more flexibleness. Third, there is no energy company will set money in this undertaking because it merely has been tested in really smell graduated table and last, the building of OTEC workss and lying of pipes in coastal H2O may do localized harm to reefs and near shore Marine ecosystems.2.6 ENVIRONMENTAL IMPACTS OF OTECOTEC systems are, for the most portion, environmentally benign. Although inadvertent escape of closed rhythm working fluids can present a jeopardy, under normal conditions, the lone wastewaters are the assorted saltwater discharges and dissolved gases that come out of solu tion when sea H2O is depressurized. Although the measures of outgassed species may be important for big OTEC systems, with the exclusion of C dioxide, these species are benign. Carbon dioxide is a nursery gas and can impact planetary clime ; nevertheless, OTEC systems release one or two orders of magnitude less C dioxide than comparable dodo fuel power workss and those emanations may be sequestered easy in the ocean or used to excite marine biomass production. OTEC assorted saltwater discharges will be at lower temperatures than sea H2O at the ocean surface. The discharges will besides incorporate high concentrations of foods brought up with the deep sea H2O and may hold a different salt. It is of import ; hence, that release back into the ocean is conducted in a mode that minimizes unintended alterations to the ocean assorted bed biology and avoids bring oning long-run surface temperature anomalousnesss. Analysiss of OTEC wastewater plumes suggest that discharge at deepnesss of 50- 100 m should be sufficient to guarantee minimum impact on the ocean environment. Conversely, the nutrient-rich OTEC discharges could be exploited to prolong open-ocean Mari civilization

Culture And Second Language Learning Essay

Through the conduction of studies, it has been discovered that learning a second language, particularly in a situation where second language learning is given particular importance, requires an immersion into the lingua and cultural societies of the native speakers of the second language that is to be learned (Wan 44-45). This requirement is extremely important to be followed as the immersion on the societal components of the second language of the native speakers helps the learner to obtain more hands-on learning benefits when trying to acquire second language abilities (Wan 45). Literature Review Although numerous language specialists do conclude that culture and social groups exercise great influence on the acquisition of second language abilities, these specialists are still bound to not realize that the components that involve this situation are interconnected and are not distinct entities from each other (Wan 46). It is crucial to understand that learning a second language involves factors that cannot exist without the existence of other factors (Wan 47). Most recently, it has become a trend to become immersed in the culture of the native speakers of the second language through the use of the internet (Wan 47). Numerous second language learners browse the web in order to get immersed into the native speakers’ culture (Wan 47). Numerous second language learners can definitely learn through the utilization of this method as the web has got a lot of information from around the world to offer to the browsers (Wan 47). Methodology And Data Analysis Result of the surveys participated in by English language learner students: 3 1. Methodology: They have had difficulty forming friendships due to language barriers. Data Analysis: A little over 65 % of these people have had trouble forming friendships with English native speakers in the United States due to language differences. It is often uncomfortable to form a friendship with people whom you often encounter difficulty in conversing with. An interesting conversation turns sour when you have difficulty conversing with someone. The people who face this difficulty with English native speakers often become lonely while living in the United States if they are not able to find friends that share the same language as them. 2. Methodology: They have had difficulty achieving their academic goals than they would have if their instruction at school were conducted in their native language. Data Analysis: Although non-native speakers of English who are proficient in English are the only non-English speaker foreign students who are admitted for formal academic studies at schools in America, English proficient non-native English speakers also still encounter difficulty in their academic studies than they would have if the instruction was conducted in their own language. This is such the case as the mentioned students still are not used to the English language. These students most usually converse with their circle of influence in their native language, hence, this situation causes them to become awkward in utilizing the English language in their academic studies as well. The most objective advice that can be recommended from this situation is for the students to use the English language often even when conversing with non-native English speakers who form their circle of influence. Or, it would be better if these students would be able to find native English speaker friends who would be willing to practice conversing with 4 them in English on a regular basis. It would also be helpful for these students to practice sharpening their English language writing skills through regularly utilizing writing drills. 3. Methodology: Language barriers often make the students feel a longing to go home to their country. Data Analysis: Numerous students who experience difficulty learning English in the United States are usually not able to adjust to their social environment in the country. As a result they often feel that they are social outcasts and feel that they don’t belong in the community. Because of this situation that they may get into, they may become inclined to go back to their home country. 4. Methodology: Language barriers may have the tendency to make the students inculcate a lower self-esteem. Data Analysis: The students feel that they are not smart enough as they are not able to efficiently learn a second language. This dampens their spirits of good self-esteem. 5. Methodology: These students become the targets of discrimination pranks in the United States. Data Analysis: Numerous of these students become the victims of prank jokes just because of their limited English language abilities. They are seen as vulnerable group of people as they create a self-image of being dumb or â€Å"not smart enough† due to their limited English language abilities. 6. Methodology: These students become too dependent on an English proficient relative, family member or friend while in the United States. Data Analysis: This becomes the situation as the students may not even be able to convey simple information to strangers (e. g. , giving orders at a restaurant) due to their limited 5 English language abilities. The mentioned family member, relative or friend may eventually feel that these students are becoming a burden on them as time goes on. 7. Methodology: Numerous students are reluctant to learn English as a second language because they feel that learning it would cause them to somehow exhibit disloyalty to their own language and culture. Data Analysis: It now a common trend that people do somehow paint a picture on other people as being â€Å"colonially influenced† if they try to learn a second language. This causes these second language learners to become self-conscious when trying to learn a second language. If these people become too self-conscious to learn a second language, they may also give up the pursuance of a goal to move to another country and other goals that come with it. 8. Numerous people abandon their culture altogether and adapt the culture of the native speakers of the second language that they are learning. Learning a second language ultimately also causes one to get immersed in the culture in which that language belongs. Therefore, there are times that the culture of the learners gets totally abandoned as these learners try to learn a second language. This situation is sometimes viewed negatively by others. Results Learning a second language definitely has its ups and downs. The learners would just have to weigh in whether the advantages outweigh the disadvantages as a basis in making their decision to learn a second language. However, we can definitely see that as long as the teaching of the second language is executed properly, numerous students are able to learn the language efficiently and utilize their second language fluency in worthwhile activities and 6 and professions. Discussions Three questions need to be answered in order for specialists to improve second language teaching and learning (Conference Probes Second Language 1). These questions are the following (Conference Probes Second Language 1): 1. What are the strategies on research that need to be executed in the implementation of second language education in America (Conference Probes Second Language 1)? 2. What are the strategies on research on the execution of second language education in the United States that need to be improvised (Conference Probes Second Language 1)? 3. What are these research strategies that are deemed to be effective (Conference Probes Second Language 1)? Reading, writing and speaking fluency of a second language does not come automatically if one has acquired extensive knowledge on the language usage (Swiderski 4). A culture’s main foundation is the official language that comes with it (Swiderski 6). When one first learns a language, he/she automatically first learns its corresponding culture (Swiderski 6). A language mirrors its corresponding culture (Swiderski 6). However, the language and the culture are not exactly similar in every ways (Swiderski 6). Because when learning a language one learns all about its usage, its interconnected component, culture, is also being learned during the process of learning the language (Swiderski 6). Therefore, language and culture are still 7 Regarded as separate entities (Swiderski 6). We can really see that a language tells about what kind of culture it evolves in (Swiderski 13). For example, a classroom where an English language learning class is held comprises of styles and settings that tells about the culture of the country where the school that houses the classroom is located (Swiderski 13). Significant differences in the way that the English language is used among the native and non-native speakers of English are considerably noticeable (Lucas 59). However, there are some questions that arise from this conclusion (Lucas 73). These questions are the following (Lucas 73): 1. Do the students make requests to their professors directly or indirectly (Lucas 73)? 2. Is politeness evident in the way that the students make the requests (Lucas 73)? Conclusions Charles Hutchison, Lan Quach and Greg Wiggan wrote in their article entitled, â€Å"The Interface of Global Migrations, Local English Language Learning And Identity Transmutations Of The Immigrant Academician,† English language instructors who experience teaching students belonging to different cultures, experience the following culture shock situations: 1. Problems in differences in teaching and learning. 2. Problems in differences in curriculum and assessment. In the article entitled, â€Å"The Interface Of Global Migrations, Local English Language Learning And Identity Transmutations Of The Immigrant 8 Academician,† using the social-constructivist (and cognition) theories as references, instructors of English language classes experience changes in the way they view language through the following ways: 1. They may be forced to conform to the students and their circle of influences’ viewpoints and theories. 2. They may experience communication barriers. Furthermore, the authors state in the article that the English language instructors come to realize who they really are and their vocation objectives due to the following reasons: 1. They shape what types of people their students become and their students’ self-esteem. 2. They struggle in helping their students realize their own identity as a minority in the United States. 9 Works Cited Hutchison, Charles, Quach, Lan & Wiggan, Greg. â€Å"The Interface of Global Migrations, Local English Language Learning And Identity Transmutations Of The Immigrant Academician. † Forum On Public Policy: A Journal Of The Oxford Round Table (2006). Lucas, Sigrun. â€Å"Students Writing Emails To Faculty: An Examination Of E-Politeness Among Native And Non-Native Speakers Of English. † Language, Learning & Technology 11 (2007): 59, 73. Swiderski, Richard M. Teaching Language, Learning, Culture. Westport: Bergin & Garvey, 1993. Wan, Shun. â€Å"Second Language Socialization In A Bilingual Chat Room: Global And Local Considerations. † Language, Learning & Technology 8 (2004): 44-47. â€Å"Conference Probes Second Language Research Needs. † Reading Today August 2001.