The Scarlet Letter, By Nathaniel Hawthorne :: essays papers

The Scarlet Letter, By Nathaniel Hawthorne Nathaniel Hawthorne's background influenced him to write the bold novel The Scarlet Letter. One important influence on the story is money. Hawthorne had never made much money as an author and the birth of his first daughter added to the financial burden ("Biographical Note" VII). He received a job at the Salem Custom House only to lose it three years later and be forced to write again to support his family (IX). Consequently, The Scarlet Letter was published a year later (IX). It was only intended to be a long short story, but the extra money a novel would bring in was needed ("Introduction" XVI). Hawthorne then wrote an introduction section titled "The Custom House" to extend the length of the book and The Scarlet Letter became a full novel (XVI). In addition to financial worries, another influence on the story is Hawthorne's rejection of his ancestors. His forefathers were strict Puritans, and John Hathorne, his great-great-grandfather, was a judge presiding during the S! alem witch trials ("Biographical Note" VII). Hawthorne did not condone their acts and actually spent a great deal of his life renouncing the Puritans in general (VII). Similarly, The Scarlet Letter was a literal "soapbox" for Hawthorne to convey to the world that the majority of Puritans were strict and unfeeling. For example, before Hester emerges from the prison she is being scorned by a group of women who feel that she deserves a larger punishment than she actually receives. Instead of only being made to stand on the scaffold and wear the scarlet letter on her chest, they suggest that she have it branded on her forehead or even be put to death (Hawthorne 51). Perhaps the most important influence on the story is the author's interest in the "dark side" ("Introduction" VIII). Unlike the transcendentalists of the era, Hawthorne "confronted reality, rather than evading it" (VII). Likewise, The Scarlet Letter deals with adultery, a subject that caused much scandal when it w! as first published (XV). The book revolves around sin and punishment, a far outcry from writers of the time, such as Emerson and Thoreau, who dwelt on optimistic themes (VII). This background, together with a believable plot, convincing characterization, and important literary devices enables Nathaniel Hawthorne in The Scarlet Letter to the develop the theme of the heart as a prison. The scaffold scenes are the most substantial situations in the story because they unify The Scarlet Letter in two influential ways.

The Issue of Non-Human Intelligence :: Biology Essays Research Papers

The Question of Non-Human Intelligence Human beings have long assumed that they were at the pinnacle of the evolutionary pyramid thanks mainly to their more complex brain. They believe that this advanced brain makes them not just more intelligent but categorically different from all other organisms. Recent advances in the fields of neurobiology and anatomy have begun to chisel away at this most scared of human assumptions and demonstrate that human brains, and the intelligence associated with them, are not categorically different than other animals. Instead the research indicates that intelligence is on a continuum from "lower" animals to "higher" ones. These findings led to new fields of research which sought to gain a better understanding of intelligence and its evolution by comparing the behaviors and the brains of various organisms. Despite existing for many years and being supported by researchers in fields as varied as biology and linguistics there have been nearly as many steps backward as there have been forward. The central dilemma in studying intelligence is to come up with a universally acceptable definition of intelligence. Many researchers define intelligence as the ability to use language and create tools to manipulate the environment. While this definition may seem fairly logical, especially because humans seem to be the axiomatic example for this definition, many researchers argues that its anthropocentric nature is too limiting. By placing parameters on intelligence which only humans meet, and lower primates fit to varying degrees, it is inherently impossible to find "intelligence" in any other species. A second problem with this humanist definition of intelligence is that it is based largely on human introspection and the knowledge that we are conscious, rational, linguistic animals(1). Kenneth Marable argues "if the same criterion that are used to rule out non-human intelligence were applied to humans without the benefit of introspection, we would doubt even our own intelligence"(1 ). One of the first goals of inter-species intelligence studies was to create a quantitative scale to measure the intelligence of animals. Since the administration of IQ test to many different species seemed illogical, researchers turned to using scales which compared the size of an animal's brain to the size of its body; this value was known as the Encephalization Quotient. The Encephalization Quotient (EQ) "allows researchers to ask the question: 'Is the brain of a given species bigger or smaller than would be expected, compared with that of other animals its size?

Successful E-Business Systems: PayPal :: essays research papers

SUCCESSFUL E-BUSINESS SYSTEMS - PAYPAL ABSTRACT PayPal is an account-based system that allows anyone with an email address to send and receive online payments. This service is easy to use for customers. Members can instantaneously send money to anyone. Recipients are informed by email that they have received a payment. PayPal is also available to people in 38 countries. This paper starts with introduction to the company and its services. The information about the history and the current company situation are covered. Later some interesting and different technical issues are discussed. The Paper ends with analysis of the company and several future recommendations. KEYWORDS PayPal, Payment Systems, E-business, Money Transactions, PayPal Analyses. TABLE OF CONTENTS 1. Introduction 2. PayPal as e-Business 3. Technical Issues 4. Analysis (of PayPal as e-Business) 5. Conclusion 6. References 1. INTRODUCTION 1.1 - PayPal –A Popular Company This paper is about a company called PayPal. First I will touch the general information about the company, then provide information about several details and finish with several useful future recommendations. PayPal (formerly X.com) that was founded in 1998 belongs to an Electronic Payment Systems, more precisely to Generic Systems subgroup. It is located in San Jose and carries out services that provide the possibility of sending and receiving money by means of computers in an easy, secure and fast way using an account-based system. This can be done by anyone (a private person or legal entity) who has an email address. When the money is transferred, a message is sent to the recipient’s email address notifying about the transaction. At the same time certain security measures are taken during these operations. One can still charge his or her account without having an electronic card, using the bank transfer or a paycheck. Transferring money is as easy as sending an email for customers. Page 2 2 (Fig.1, What is PayPal, retrieved on February 15 th , 2004 From: PayPal Developer Conference Keynote, Alex Kazim, VP Marketing, 05/08/03. Data available on http://paypaldev.org/ ) In 2002, PayPal was acquired by eBay. It has quickly become popular. Today the company offers services in thirty-eight countries and has about forty million customers for today. In most of these countries it supports bank withdrawal service and is especially popular among eBay customers. Fig.1 briefly illustrates Company’s business. The system enables its users to send money, using computers. The same can be done by means of mobile phones that are support Web.

The Ethylene Propylene Diene Terpolymers Engineering Essay

INTRODUCTION AND OBJECTIVESEthylene-propylene-diene terpolymers ( EPDM ) have been widely used in industrial applications because of their first-class opposition against heat, ozone and weathering, every bit good as their unusual handiness of accepting high burden of fillers [ 1-3 ] . Support in the public presentations of gum elastic compounds, such as tensile strength, resiliency, wear opposition and flex opposition, can be achieved by lading the compounds with particulate fillers. Different classs of C black are the well-known conventional fillers used in EPDM gum elastics compounds [ 4 ] . Increasingly, mineral fillers like silicon oxide and clay have attracted more attending as they cost less and give less wellness jeopardies [ 4 ] . But due to the hapless silica-rubber bonding, the support by silicon oxide has non been to the full exploited [ 4, 5 ] . The handiness of silanised silicon oxide, which is normally obtained by pre-treating silicon oxide with Bi ( 3-triethoxysilylpro pyl ) tetrasulphane ( TESPT ) , a yoke agent, adheres silicon oxide to the gum elastic [ 6 ] . Furthermore, it is attractive that the sulphur-bearing bifunctional organosilane can besides assist to bring forth crosslinks between gum elastic ironss with the presence of gas pedals and activators at elevated temperatures, i.e. 140-240A °C [ 5-12 ] . The presence of TESPT improves the remedy procedure in silanised silica-filled EPDM gum elastics with other common vulcanizing systems. Though many research workers have made attempts to look into different remedy systems for EPDM gum elastics [ 3, 4, 13-17 ] , the inquiry on the efficiency of remedy systems for commercial production remains unfastened. That gives the aim of this undertaking which is as following: Using different remedy systems to crosslink silanised silica-filled EPDM gum elastic ; Assess efficiency of the remedy systems ; Choose the most efficient one for bring arounding the gum elastic. This literature reappraisal foremost introduces the basic background of EPDM gum elastic, including composing, chemical construction and corresponding belongingss and industrial applications in Section 2. Then a brief overview of the preparation of silanised silica-filled EPDM gum elastic compounds is given in Section 3, followed by the elaborate debut of recent plants on fillers and remedy systems for silanised silica-filled EPDM gum elastic in Sections 4, 5 and 6. Finally, the undertaking program will be discussed.BASIC BACKGROUND OF EPDM RUBBERTerpolymerisation of ethene, propene and a non-conjugated diene gives EPDM gum elastic with a concentrated ethylene-propylene anchor and unsaturation site in the side group, introduced by diene monomers [ 17 ] . Generally, ethene and propene monomers are the major constituents in an EPDM, supplying inherently first-class opposition against debasement by heat, visible radiation, O, and, in peculiar, ozone [ 18 ] . The little sum of non-conjug ated diene monomers place the reactive unsaturation sites available for sulphur vulcanization or polymer alteration chemical science, as the dienes are so structured that merely one of the dual bonds will polymerize [ 19 ] . Figure 1 EPDM ternonomers The three co-monomers used in industry are present in Figure 1. Each diene monomer incorporates with a different ability of triping long concatenation ramification or polymer side ironss, hence affect the processing and vulcanization procedure [ 20 ] . The most normally used termononer is ethylidene norborne ( ENB ) as it can integrate easier and has greater responsiveness with sulphur vulcanization [ 19 ] . The chemical construction of EPDM with ENB termonomer is illustrated as follows: Figure 2 Chemical construction of EPDM A general sum-up of belongingss of EPDM gum elastic is listed in Table 1 below. Table 1 Properties of EPDM gum elastics Polymer Properties Mooney Viscosity, ML ( 1+4, 125A °C ) 5 to 200 Ethylene Content ( wt. % ) 45 to 80 Diene Content ( wt. % ) 0 to 15 Specific Gravity ( gm/ml ) 0.855 to 0.88Vulcanisate PropertiesHardness ( Shore A Durometer ) 30 to 95 Tensile Strength ( MPa ) 7 to 21 Compaction Set B, ( % ) 20 to 60 Elongation ( % ) 100 to 600 Useful Temperature Range ( A °C ) -50 to +160 Tear Resistance Fair to Good Abrasion Resistance Good to Excellent Resilience Fair to Good Electrical Properties Excellent EPDM is the fastest turning man-made gum elastic having to its superior ozone and thermic opposition over other diene gum elastics and its burden of fillers and plasticizers to an highly high degree [ 18 ] . EPDM has found widespread applications in [ 18 ] : Automotive applications, such as seals, hosieries and profiles ; Construction applications, such as roof sheeting, profiles, and seals ; Electrical overseas telegrams and jacketing ; Moulded contraption parts ; besides is Blended with other gum elastics and thermoplastics.EPDM RUBBER FORMULATIONFillers for EPDM RubberDue to the non-crystallising nature of EPDM gum elastic, support is required for EPDM gum elastic, since the mechanical belongingss of the unfilled gum elastic are rather hapless. Carbon black is the most widely used filler for reenforcing EPDM gum elastics, but silicon oxide, clay, talc and some other mineral fillers are besides used [ 19 ] . Increasingly, more attending is being paid to silica [ 1, 2, 4, 15, 16, 21-25 ] . To accomplish full development of support by reenforcing fillers in EPDM gum elastics, C black and other fillers must be good dispersed. Good support can give EPDM gum elastics with high tensile strength, good tear opposition and improved scratch opposition. Furthermore, a well-mixed batch besides improves the processability for bulge, calendaring and modeling [ 19 ] . The reenforcing fillers and their effects on EPDM gum elastics will be discussed in item in Sections 4 and 5.Remedy Systems for EPDM RubberAs mentioned before, the incorporation of unsaturation sites allows the sulfur vulcanising of EPDM rubber. Sulphur remedy is the most widely used method, busying about 80 % of EPDM applications [ 17 ] . EPDM gum elastic can besides be vulcanised in a peroxide remedy system. Rubber vulcanised by sulfur remedy system can suit more emphasis and exhibit higher elongation at interruption, while the advantage of peroxide remedy over sulphur remedy is the formation of thermo-stable carbon-carbon bonds alternatively of thermo-labile sulphur-sulphur bonds, as the dissociation temperature and energy of sulphur-sulphur bonds is lower than that of carbon-carbon bonds [ 17, 26 ] . Hence higher effectivity of heat opposition of EPDM gum elastic can be obtained by peroxide remedy systems. The treatment of remedy systems for EPDM gum elastics will be unwrapped in Section 6.Other AdditivesOther normally used additives in EPDM rubber compounds are plasticizers, s ofteners and treating AIDSs. Naphthenic oils have been the most widely used plasticizers as they have the best compatibility with EPDM gum elastic and lowest cost. Paraffinic oils are normally used for elevated-temperature applications or in colored compounds due to the lower volatility and higher UV stableness. Stearic acid, Zn stearic and other internal lubricators are frequently used as processing AIDSs in EPDM rubber compounds. The presence of tackifier or non is dependent on if there is a demand for presenting tack as EPDM gum elastic compounds are inherently non tacky [ 19 ] . Different preparations of EPDM rubber compounds consequence in a assortment of applications. A typical formula for C black-filled EPDM gum elastic for sheeting application is shown in Table 2 below. Tiwari and colleagues [ 27 ] studied consequence of different interventions of silicon oxide on silica-filled EPDM gum elastic belongingss and the basic preparation for silanised silica-filled gum elastic is given in Table 3. Table 2 Typical formula for C black-filled EPDM sheeting [ 19 ] Components Amount ( phr ) EPDM A 100 N – 347 black 120 Talc 30 PARAFFINIC oil type 103B 95 Zinc oxide 5 Stearic acid 1 MBTS 2.2 TMTD 0.65 TETD 0.65 Sulfur 0.75 Table 3 Basic preparation for silanised silica-filled individual EPDM gum elastic Components Amount ( phr ) EPDM 100 Silica 50 ZnO 5 Stearic acid 2.0 Silane ( TESPT ) 4 Sulfur 1.04 N-cyclohexylbenzothiazole-2- sulphonamide ( CBS ) 1.5 Tetramethylthiuram disulphide ( TMTD ) 0.8 Zinc dibenzyldithiocarbamate ( ZBEC ) 1.5Fillers USED IN EPDM RUBBERCarbon Black: A Conventional FillerCarbon inkinesss are the most widely used reenforcing fillers in gum elastic industry since the find of their effectivity of bettering the physical and mechanical belongingss of natural elastomers in 1904 [ 12 ] . Different classs of C black have been used in EPDM gum elastics for industrial applications, such as roof sheeting and automotive profiles and many research workers have studied about the mechanical behavior of C black reinforced EPDM gum elastics. Ghosh and Chakrabarti [ 28 ] reported effects of different sums of C inkinesss on the physical and mechanical belongingss, ageing behavior and conduction of EPDM rubber compounds and the rheological behavior of EPDM gum elastic in bulge processing. Osanaiye [ 29 ] used sinusoidal shear flows to analyze the effects of C black, temperature and shear frequence on dynamic mechanical belongingss of EPDM rubber compounds. The effects of different sums of carry oning C black filler on thaw rheology and relaxation behavior of healing free EPDM gum elastic by cone home base viscosimeter was reported by Ghosh and Chakrabarti [ 30 ] . Abd-El Salam and colleagues [ 31 ] used inactive and dynamic analysis to analyze consequence of different vulcanizing systems on the mechanical belongingss of butyl rubber/ EPDM general furnace black. Cavdar, S. et al [ 3 ] reported a comparative survey on mechanical, thermic, viscoelastic and rheological belongingss of cured C black filled EPDM gum elastic. There are many more illustrations of research on other facets of C black reinforced EPDM gum elastics. For illustration, conductive gum elastics have been made by adding conductive C inkinesss into EPDM and its blends by Das, N. C. et Al [ 32 ] . The electrical and mechanical belongingss have been studied.Silica: A Novel FillerRecently, man-made silicon oxide is going more popular as reenforcing filler in EPDM gum elastics because they have proved to be every bit effectual as C inkinesss [ 12 ] . Furthermore, silica offers several advantages over C black: in tyre paces, a higher wear opposition and better wet-grip with a lower turn overing opposition can be obtained by utilizing silicon oxide instead than carbon black [ 1 ] . Besides, silica-filled compounds are really suited for light coloring material applications.Problem and TreatmentsThe support of silicon oxide in EPDM gum elastic has non reached the coveted degree because of the hapless silica-EPDM bonding. The surfaces of sili con oxides have siloxane and silanol groups, which make the filler acidic and polar [ 7 ] while EPDM gum elastic is non-polar. When the polar silicon oxide is assorted with non-polar and olefinic hydrocarbon gum elastics, e.g. EPDM, hydrogen-bond interactions between polar siloxane or silanol groups in agglomerates are more likely to happen than the interactions between silicon oxide and rubber [ 1 ] , ensuing in hapless compatibility of hydrocarbon gum elastics with silicon oxide. Furthermore, the acidic silanol groups interact with the basic gas pedals, spread outing the remedy times to an unacceptable degree and take downing the crosslinking denseness [ 5 ] . The polar surface of silicon oxide will besides be given to absorb wet and this influences remedy and belongingss of the cured gum elastic [ 5 ] . Additionally, the viscousness increases with increasing sum of silicon oxide filler and if the viscousness is excessively high, the processability will be reduced and inordinate w ear and tear of the processing machine will take topographic point [ 5 ] . However, the handiness of specific matching agents makes the usage of silicon oxide in EPDM rubber compounds possible. Bifunctional organosilanes are normally used to better the compatibility between silicon oxide and hydrocarbon gum elastics by modifying the surfaces of silicon oxide [ 1 ] .Silanes and Silanised SilicaBifunctional silanes can be used to chemically associate an organic stuff to an inorganic substrate. The rule purpose of utilizing silanes to respond with silica involves cut downing ablating hydrophilicity of silicon oxide and presenting a new organo – functional groups onto the silicon oxide surfaces [ 1 ] . In the instance of sulphur-cured compounds, sulphur-functional silanes perform best and for peroxide-cured compounds, unsaturated silanes such as vinylsilanes are recommended. In footings of sulphur-cure systems, the usage of Bi ( 3-triethoxysilylpropyl- ) tetrasulphane ( TESPT ) ( Figure 3 ) as a yoke agent is good established, since foremost introduced in 1991 in a practical application in green tyres by Rauline [ 33 ] .. Figure 3 Chemical construction of TESPT TESPT possesses ethoxy groups and tetrasulphane groups. The ethoxy groups react with silanol groups on the silicon oxide surfaces via hydrolysis mechanism [ 33 ] , taking to the strong covalent silica-filler bonding. The tetrasulphane groups are no-good reactive and therefore stable rubber-silica bonding can be achieved via sulfur crosslinking. Bis ( 3-triethoxysilylpropyl ) -disulphane ( TESPD ) was subsequently introduced chiefly to get the better of the pro-scorching job of TESPT, as the sulphur-sulphur dissociation energy of TESPD was lower than that of TESPT [ 33 ] . The silanisation of silicon oxides are normally obtained by two attacks. Silica and silanes are assorted preliminarily at an optimal temperature and reaction clip, or, instead, they can be mixed in situ during the commixture procedure [ 5 ] . The latter is the more normally used method [ 34 ] . A good silanisation is required as it yields best support and reduces compound indurating during storage. A certain sum of H2O can speed up the silanisation. The optimum wet content is suggested to be around 3-6 % [ 34 ] . The chief influences on the in situ silanisation of silica-silane filled compounds are summarised in Figure 4. Furthermore, if silicon oxide is used in a blend with, e.g. , C black, relatively more silane is required as silane is less likely to make the silica surface quantitatively in a given commixture clip [ 34 ] . In these instances, silanised silicon oxide obtained by the pre-treatment is advisable. Optimum silanisation And Short commixture times Release of ethyl alcohol T a† Ã¢â‚¬Ëœand T a† Ã¢â‚¬Ëœ Release of ethyl alcohol Ta† Ã¢â‚¬Ëœand ta† Ã¢â‚¬Ëœ Good silicon oxide scattering I ·a† Ã¢â‚¬Ëœas Ta† Ã¢â‚¬Å" Complete matching reaction Ta† Ã¢â‚¬Ëœ and T a† Ã¢â‚¬Ëœ Avoid pre-crosslinking T a† Ã¢â‚¬Å" and T a† Ã¢â‚¬Å" Fast transit procedures I ·a† Ã¢â‚¬Å"as T a† Ã¢â‚¬Ëœ High mobility of the silane ; little size Best rotor and blending chamber geometry Figure 4 chief influences on the silanisation reaction [ 34 ] Apart from sulphur vulcanization, the add-on of vinylsilanes is normally applied to better the mechanical belongingss of peroxide-cured compounds. The general construction of vinylsilanes is shown in Figure 5. Figure 5 generalized construction of vinylsilanes In contrast to the reasonably high dose of sulphur-functional silanes in merchandises necessitating high mechanical belongingss, a strong support can be achieved by the incorporation of merely 2 parts by weight Si 225 ( VTEO ) per silicon oxide [ 34 ] . Adding more extremist instigator or activators can ensue in higher crosslink densenesss [ 34 ] . However, the applications of silanised silicon oxide are largely focused in natural gum elastic ( NR ) , styrene butadiene gum elastic ( SBR ) , and polybutadiene gum elastic ( BR ) . Very few research works has been published on the effects of silane on EPDM gum elastics, but there are still some. Kim [ 33 ] reported consequence of TESPD on the processability and mechanical belongingss of EPDM rubber. Taikum and Luginsland [ 16 ] studied the function of silane-rubber yoke in sulfur, peroxide and metal oxide bring arounding systems for EPDM gum elastic. Das et al [ 4 ] showed that the presence of TEPST increased the content of bound gum elastic in silica-filled EPDM compounds, which was critical to the mechanical belongingss of the gum elastic.Other TreatmentsOther matching agents Besides silane, several other matching agents have been employed to modify the silica-EPDM bonding. Das et al [ 4 ] usage Bi diisopropyl thiophosphoryl disuli ¬?de ( DIPDIS ) , to modify EPDM rubber alternatively of silicon oxide by two-stage vulcanization technique. The effects of TAC ( Triallyl Cyanorate ) as a yoke agent on hardening and mechanical belongingss of silica-filled EPDM gum elastic were studied by Abtahi and associates [ 1 ] . Others methods Tiwari et al [ 23 ] treated the surfaces of silicon oxide by plasma-polymerisation with acetylene monomer and one twelvemonth subsequently, the comparative survey of plasma-thiophene and -acetylene coated silicon oxide in EPDM support was reported [ 27 ] . Tan and Isayev [ 22 ] treated silicon oxide utilizing a coaxal supersonic extruder and investigated the effects on belongingss of ultrasound-treated silicon oxide on filled EPDM gum elastic.Other fillersIn most instances, C black and silicon oxide are used to reenforce EPDM gum elastics. Some other sorts of fillers have been added to EPDM rubber matrix and their effects been investigated, affecting montmorillonite ( OMMT ) nanofiller [ 35 ] , nano-zinc oxide [ 36 ] , Sm2O3 [ 26 ] , short cyanuramide fibers [ 37 ] , ash/halloysite [ 38 ] and so on.Effects OF FILLERS ON PROPERTIES OF EPDM RUBBEREffectss of Carbon BlackAs mentioned before, research workers have studied a batch about the effects of adding C black on the mechanical belo ngingss of EPDM rubber, demoing that the belongingss were improved significantly [ 3, 28-32 ] . Cavdar and associates [ 3 ] reported that the Young ‘s modulus, Shore A hardness, and compaction force over distortion ranage increased with increasing content of C black, while the elongation at interruption reduced ( Figure 6 ) . Figure 6 Effectss of C black content on ( a ) mechanical belongingss ; and ( B ) rheological belongingss of EPDM rubber [ 3 ] . The Young ‘s modulus was most filler content medium as the value increased aggressively with sum of C black. In footings of rheological belongingss, increasing C black content resulted in higher upper limit torsion and the difference between upper limit and minimal torsion, which corresponded to relative crosslinking denseness. The optimal remedy clip decreased with increasing the filler content. Considerable research has been done to understand the mechanism of support. Two chief features of active inkinesss are their surface country and sum construction, which determine the inactive and dynamic in-rubber belongingss and therefore do it possible to orient the public presentation of gum elastic merchandises.Effectss of SilicaEffectss of silicon oxide on the mechanical belongingss of EPDM gum elasticWithout silanes The effectivity of silicon oxide as reenforcing filler in EPDM gum elastic was confirmed by Ichzo and colleagues [ 2 ] who showed that tensile strength had improved by 500 % , tear strength by 400 % and elongation at interruption at 140 % by adding 20 phr of precipitated silicon oxide. They used silicon oxide with different size and demonstrated that an increasing inclination of tensile strength can be achieved when the size of silica atom decreased. The hardness of EPDM gum elastic increased with the filler burden but it was non particle size dependant. They besides found that silicon oxide sums size distribution affected the mechanical belongingss and it deserved more attending. With silanes Das [ 4 ] indicated that the Young ‘s modulus, tensile strength and crosslinking value of silica-filled EPDM gum elastics increased well when 1-2 phr of TESPT was added, while the elongation at interruption decreased, as illustrated in Figure 7 below. ( B ) ( a ) ( vitamin D ) ( degree Celsius ) ( degree Fahrenheit ) ( vitamin E ) Figure 7 Consequence of TESPT on the mechanical belongingss of EPDM rubber compounds: ( a ) modulus at 100 % elongation ; ( B ) modulus at 300 % elongation ; ( degree Celsius ) tensile strength ; ( vitamin D ) hardness ; ( vitamin E ) elongation at interruption ; ( degree Fahrenheit ) crosslinking value [ 4 ] .Consequence of silicon oxide on treating belongings of EPDM gum elasticAs mentioned earlier, adding silicon oxide to EPDM gum elastic will do the processing more hard as the viscousness increases significantly when a large sum of silicon oxide is involved [ 5 ] . However, the handiness of silanes such as TESPT or TESPD weaken the interaction between silica atoms as the ethoxy groups in silane react with the surfaces of silicon oxide by the silanol groups, taking to a alteration in interfaces between the polymer-polymer, polymer-silica and silica-silica [ 33 ] . Hence, it reduces the viscousness and improves the processability of the gum elastic compounds [ 5 ] . Kim [ 33 ] reported that the add-on of TESPD to silica-filled EPDM gum elastic yielded lower Mooney viscousness, heat coevals and bulge force per unit area build-up through an extruder, which made treating easier.Effectss of silicon oxide on thermic belongings of EPDM gum elasticMadani [ 39 ] studied the thermic belongings of gamma radiation cured silica-filled EPDM via thermohydrometric analysis ( TGA ) and demonstrated that the presence of silicon oxide reduced the rate of debasement and the weight loss of vulcanisates. This was due to the improved adhesion between silicon oxide and EPDM rubber matrix. He besides stated that thermic belongings of silica-filled EPDM gum elastic was determined by the burden of filler, filler size and construction, filler-matrix interactions and processing technique.Consequence of silicon oxide on the ageing belongings of EPDM gum elasticAirplanes et al [ 15, 40 ] used gamma radiation to age unfilled and filled EPDM gum elastics at room temperature and at 80A °C to analyze the influence of silicon oxide on the gum elastic debasement. They evidenced that adding untreated silicon oxide accelerated the polymer stage debasement due to the formation of auxiliary groups triggered by silica irradiation. If silane-treated silicon oxide was presented, the debasement acceleration was delayed.Effectss of silicon oxide on the electrical belongings of EPDM gum elasticRaw EPDM gum elastic is an dielectric with a conduction of about 10-14 S-1 [ 39 ] . It was proved that the add-on of inorganic fillers such as silicon oxide increased the condu ction of polymer [ 39 ] . Madani [ 39 ] investigated the fluctuation of dielectric changeless ( ) of some healed EPDM and silica-filled EPDM gum elastics as a map of frequence and found that was filler content dependant: it increased up to 10 phr, and so decreased with increasing burden. He pointed that the addition was due to the polar groups present on silicon oxide surfaces, and that the lessening was due to the increasing system denseness and the extent of orientation of dipoles.Effectss of scattering of silicon oxide on the belongingss of EPDM gum elasticFiller scattering has a distinguishable consequence on the belongingss of gum elastic compounds. Poor scattering has a negative consequence on gum elastic belongingss by making structural defects [ 5 ] . Polmanteer and Lentz [ 41 ] demonstrated that some belongingss such as tensile strength and tear strength improved as the filler scattering quality increased after they examined consequence of scattering of silicon oxide on the belongingss of some sulphur-cured gum elastics. To obtain a better scattering of fillers in gum elastic compounds, increasing commixture clip is an efficient method, nevertheless, at the cost of take downing the molecular weight of polymer, which leads to the decrease in mechanical belongingss [ 5 ] . The grade of scattering of filler can be examined by microscopy methods, such as negatron microscopy and atomic force microscopy.CURE SYSTEMS FOR EPDM RUBBERSulphur Cure systemsEvery gum elastic merchandise is vulcanised with its ain specific remedy system, ensuing in assorted belongingss. As already mentioned, the incorporation of pendent unsaturation sites enables that EPDM rubber to be vulcanised by sulphur plus gas pedals. Sulphur remedy is the most widely used vulcanising method for bring arounding EPDM gum elastics, representing about 80 % of the EPDM applications [ 17 ] . Compared with peroxide-cured EPDM gum elastics, sulphur-cured gum elastic compounds are able to suit more e mphasis and exhibit higher elongation at interruption. Basically, three types of sulfur crosslinks are used in elastomers, viz. , monosuphfidic ( C-S-C ) , disulphidic ( C-S2-C ) and polysuphidic ( C-Sn-C ) . The crosslink denseness and the value of Ns are chiefly determined by vulcanizing system and procedure conditions such as remedy temperature and clip. Over the old ages three particular types of remedy systems have been established based on the degree of sulfur and the ratio of accelerator-to-sulphur applied. They are: Efficient vulcanization ( EV ) systems, Semi-efficient vulcanization ( SEV ) systems and Conventional vulcanization ( CONV ) systems. EV systems are characterised by a high ratio of accelerator-to-sulphur or even sulphurless, but incorporating sulphur-donor alternatively. They are normally used in vulcanisates which require an highly high heat and reversion opposition [ 42 ] . CONV systems are vulcanisation systems with a low ratio of gas pedals to sulfur and they can supply better flex and dynamic belongingss but worse thermal and reversion opposition. A semi-efficient remedy system has an accelerator-to-sulphur ratio in between those of the CONV and EV vulcanization systems. For SEV systems, optimal degrees of mechanical and dynamic belongingss of vulcanisates with intermediate heat, reversion and flex belongingss can be obtained [ 42 ] . The composings of CONV, SEV and EV systems are shown in Table 4. Table 4 the degrees of gas pedals and sulfur in CONV, SEV and EV systems [ 42 ] Type Sulphur ( phr ) Accelerator ( phr ) A/S ratio CONV 2.0-3.5 1.2-0.4 0.1-0.6 SEV 1.0-1.7 2.5-1.2 0.7-2.5 Electron volt 0.4-0.8 5.0-2.0 2.5-12 Increasing accelerator-to-sulphur ratio consequences in increased sum of shorter mono- and disulphidic crosslinks. As the dissociation energy of C-C bonds are larger than that of S-S bonds. Vulcanisates obtained by EV and SEV systems possess a better heat and reversion opposition than those cured by CONV systems. The general influences of the type of vulcanization systems on the construction and belongingss of the vulcanisates are summarised in Table 5. Table 5 vulcanisate construction and belongingss for different remedy systems Features Remedy systems CONV SEV Electron volt Poly-and disulphidic crosslinks ( % ) 95 50 20 Monosulphidic crosslinks ( % ) 5 50 80 Cyclic sulfide ( conc. ) High Medium Low Non-sulphidic ( conc. ) High Medium Low Reversion opposition Low Medium High Heat ageing opposition Low Medium High Fatigue opposition High Medium Low Heat construct up High Medium Low Tear opposition High Medium Low Compaction set ( % ) High Medium Low Furthermore, nitrosamine free or safe hardening bundles were developed for the replacing of remedy systems which develop nitrosamines during vulcanization. N-nitrosamines formed during vulcanization as condensation merchandises from certain gas pedals and azotic gasses and are carcinogenic [ 43 ] . They are generated from some thiuram and dithiocarbamates gas pedals, which are known as ultra-accelerators and normally used in EPDM gum elastic intensifying [ 43 ] . Traditional ultra-accelerators can be replaced by nitrosamine-free systems, but at disbursal of high costs. About all imaginable combination of bring arounding ingredients for EPDM rubber compounds have been evaluated over the old ages [ 42 ] . Five typical remedy systems are listed in Table 6. The alternate nitrosamine free or safe remedy systems are suggested in Table 7. Table 6 Five remedy systems for EPDM rubber [ 42 ] Systems ( phr ) Advantages Disadvantages System 1 Low cost Blooming S 1.5 TMTD 1.5 2-mercaptobenzothiazole ( MBT ) 0.5 System 2 Excellent physical belongingss and fast remedy Scorchy and expensive S 2.0 MBT 1.5 Tellurium diethyl dithiocarbamate ( TDEC ) 0.8 Dipentamethyl thiuram tetrasulphide ( DPTT ) 0.8 TMTD 0.8 System 3 Excellent compaction set and good heat ageing opposition Bloom and really high cost S 0.5 Zinc dibutyldithiocarbamate ( ZDBC ) 3.0 Zinc dimethyldithiocarbamate ( ZDMC ) 3.0 4,4'dithiodimorpholine ( DTDM ) 2.0 TMTD 3.0 System 4 Non-blooming Cure comparatively slow and worse compaction set S 2.0 2,2†²-dithiobenzothiaole ( MBTS ) ZDBC 2.5 TMTD 0.8 System 5 Zinc O, O-dibutylphosphorodithioate ( ZBPD ) 2.0 TMTD 1.0 N-butylbenzothiazole-2-sulfenamide ( TBBS ) 2.0 S 1.0 Fast remedy and good physical belongingss Blooming Table 7 Some NA free options for the remedy systems above [ 42 ] Systems NA free optionsSystem 1S 1.5 S 1.3 MBT 0.5 MBT 0.75 TMTD 1.5 CBS 3.8System 2S 2.0 S 1.5 MBT 1.5 ZMBT 2.0 TDEC 0.8 ZBEC 0.5 DPTT 0.8 ZBPD 2.0System 5ZBPD 2.0 ZBPD 2.5 TMTD 1.0 0 TBBS 2.0 TBBS 2.0 S 1.0 S 1.2 Besides, an activator, such as Zn oxide, is normally needed in EPDM remedy systems to maximize the efficiency of gas pedals and chemical adhesion between the filler and gum elastic.Silanised Silica: a â€Å" Crosslinking Filler †An of import issue must be considered sing the sulphur remedy systems for silanised silica-filled EPDM gum elastic is the fact that the usage of sulphur-functional silanes such as TESPT combine silicon oxide with sulfur into one individual merchandise known as a â€Å" crosslinking filler † [ 6 ] , such as silanised silicon oxide. It can non merely better the mechanical belongingss of gum elastic, but besides can bring forth crosslinks between the gum elastic ironss at elevated temperatures in the presence of gas pedals due to the sulphur-containing groups. Therefore, the vulcanization procedure can be achieved without elemental sulfur being present [ 6 ] . Research has shown that the mechanical belongingss of some vulcanisates improved signific antly in malice of the decrease in the usage of the hardening chemicals [ 6 ] . It was demonstrated that during the vulcanization procedure the formation of both rubber matrix crosslinking web and silica-rubber yoke web occurred at the same time and did non separate. In the presence of elemental sulfur, the two different crosslinking reactions compete for the added sulfur as the sulphur-functional silanes like TESPT are sulphur acceptor [ 34 ] . Therefore the crosslinking construction and the support are determined by the sums of silane and sulfur. The influence of adding different sums of sulfur and silane on the matrix and silica-rubber yoke webs is shown in Figure 8. Figure 8 consequence of the sum of ( a ) added sulfur and ( B ) silane ( TSEPT ) on the crosslinking densenesss of matrix and silica-rubber yoke [ 34 ] It is apparent that increased sum of sulfur enhances the efficiency of the silica-rubber yoke until all the silane is activated. Initially, a little grade of addition in the matrix crosslink denseness is observed, due to the ingestion of free sulfur by the activation of silane. After the full activation of silane, the matrix crosslink denseness additions much faster. With regard to the increasing sum of silane at a changeless sum of sulfur, the entire figure of silica-rubber bonds additions while the degree of the matrix crosslink denseness reduces, owing to the incorporation of sulfur by the silane [ 34 ] . Furthermore, in the instance of TESPD, a disulphide silane, the consequence is more important. Therefore it can be concluded that altering the sum of elemental sulfur and silane consequences in different ratios of the matrix and silica-rubber webs [ 34 ] . Furthermore, mechanical belongingss of silanised silica-filled gum elastic can be predicted because silica-rubber yoke domina tes the modulus and hydrophobation lowers hardness values. Some elaborate effects of silane on the mechanical public presentation of silica-filled EPDM gum elastic have been presented in Section 5.2.1.Peroxide Cure systemsOverviewCrosslinking with peroxides was foremost introduced in 1915, but did n't pull excessively much attending until the development of to the full saturated ethylene-propylene copolymers ( EPM ) [ 42 ] . Many sorts of elastomers can be vulcanised by peroxide remedy systems expeditiously, including NR, SBR, EPDM, BR, nitrile gum elastic, Silicones and fluorocarbon elastomers [ 42 ] . The unsaturation can better the efficiency of peroxide vulcanization [ 17 ] , due to the higher concentration of allylic Hs [ 42 ] . The comparative efficiency of peroxide crosslinking for different elastomers is: BR & gt ; NR and SBR & gt ; NBR & gt ; CR & gt ; EPDM The advantages and disadvantages of peroxide remedy compared to sulfur vulcanization are listed in Table 8 [ 42 ] : Table 8 Advantages and disadvantage of peroxide remedy compared with sulphur remedy Advantages Disadvantages Thermo-stable C-C bonds alternatively of thermo-labile S-S bonds, Scorch free storage of compounds, Simple compound preparation, Low compaction set even at high remedy temperature, It is possible to bring around at high temperatures without reversion, Good electrical belongingss of healed gum elastic, No stain of compounds. Low intensifying flexibleness ; Lack of flexibleness in modulating singe and optimal remedy clip Inferior tensile, tear and flex public presentation, Inferior scratch opposition Higher cost, Sensitivity to oxygen during vulcanization, Smells of peroxide decomposition merchandises.Peroxide remedy of EPDMPeroxide-cured EPDM gum elastics are being widely used for many old ages. They are normally used in window seals, automotive hosieries, roof sheeting, tanking liner, electrical insularities, steam hosieries, roll coverings moldings and so on [ 42 ] .Mechanism of peroxide remedy of EPDM gum elasticThe mechanism of peroxide remedy of EPDM gum elastic and the subsequent practical effects have been reviewed by new wave Duin and colleagues [ 17, 44, 45 ] . In the by and large accepted mechanism of peroxide remedy of EPDM, the major stairss are illustrated in Figure 9. Figure 9 Mechanism for peroxide remedy of EPDM [ 17, 44, 45 ] Thermal debasement of the peroxide initiated by procedure triggered a concatenation of free-radical reactions, taking to the formation of primary alkoxy ( ROaˆ? ) or secondary alkyl groups ( Raˆ? ) . Then the abstraction of H-atoms from the EPDM polymer outputs EPDM macro-radicals ( EPDMaˆ? ) . The following measure is the combination of two EPDM macro-radicals, or the incorporation of a macro-radical to an EPDM unsaturation. If a yoke agent, such as vinylsilanes mentioned in Section 4.2.1.1 ( TAC, trimethylolpropane or m-phenylenbis ( maleimide ) ) , is present, the peroxide remedy efficiency can be increased, as they can heighten the H-atoms abstraction and the undermentioned reactions are repressed [ 1, 17 ] : EPDMaˆ? + ROaˆ? a† Ã¢â‚¬â„¢ EPDM – RO ( No crosslinking ) EPDMaˆ? a† Ã¢â‚¬â„¢EPDMaˆ? ‘ + ( I?-Scission ) The issues of the elaborate mechanism of peroxide vulcanization of EPDM gum elastic remain unfastened, chiefly having to the complexness of the system. Several surveies have been conducted to see farther apprehension of the chemical mechanism of peroxide remedy of EPDM [ 46, 47 ] .Matching agents for peroxide remedy of silica-filled EPDM gum elasticAs antecedently stated, vinylsilanes are normally incorporated in peroxide remedy systems for silica-filled EPDM gum elastic to better vulcanization efficiency and mechanical public presentation of vulcanisates. The effectivity of TAC as a yoke agent for peroxide vulcanization of silica-filled EPDM gum elastic was investigated by Abtahi et al [ 1 ] and concluded that TAC matching agent improved some belongingss such as tensile strength, scratch and resiliency opposition with a proper preparation. They besides used SEM to hold a deep penetration in the interaction between silica filler and gum elastic in the presence of TAC and found that t he grade of support was chiefly affected by the grade of wettability.New DevelopmentsReducing the sulfur content consequences in vulcanisates with better thermal opposition throughout service life, nevertheless, this is at the disbursal of decrease in mechanical public presentations such as dynamic weariness opposition and tear opposition. This via media can be eliminated by utilizing two additives, viz. hexamethylene-1, 6-bisthiosulphate ( HTS ) , a station vulcanization stabilizer and 1, 3-bis ( citraconimidomethyl ) benzine, an anti-reversion agent [ 42 ] . Vulcanization techniques have effects on EPDM gum elastics. Das [ 4 ] studied the efficiency of one-stage and two-stage sulfur vulcanization techniques of silica- filled EPDM gum elastics and reported that alteration of EPDM gum elastic by two-stage vulcanization technique enhanced the interactions between EPDM rubber and silicon oxide. Furthermore, assorted remedy systems can besides be employed to heighten the public presentation of vulcanisates.Undertaking PlanThe overall purpose of this undertaking is to prove some sulfur and peroxide remedy systems to bring around silanised silica-filled EPDM gum elastic to bring forth a gum elastic with good mechanical belongingss utilizing a suited hardening system. The undertaking programs are: Prepare silanised silica-filled EPDM gum elastic compounds with peroxide and bring around the gum elastic with gas pedal and activator via the sulfur in the silane ; Use C black and silanised silicon oxide nanofillers in EPDM gum elastic to measure their effects on the mechanical belongingss of the gum elastic ; Remedy and step the mechanical belongingss of filled EPDM gum elastic to set up consequence of the bring arounding systems and fillers on the gum elastic belongingss.

Romanticism in Why Do I Love You, Sir?

Romanticism in â€Å"Why do I love You, Sir? † Many know of Emily Dickinson reclusive behavior, but very few know about her brief engagement to George Could, a student at Amherst College. Unfortunately, her wealthy father broke their engagement off because he was Just a poor student. It is believed that this disappointment triggered her initial withdrawal from society and the start of her life as a writer. She lived without marrying and devoted a significant amount of time to writing poetry and letters during a time now known as theAmerican Romanticism movement. This movement affected Emily writing and is evident in much of her poetry. Emily Dickinson displays many of the characteristics of the American Romantic period in her poem â€Å"Why do I Love You, sir? † First, an obvious connection to American Romanticism in this poem is Emily unconventional punctuation, short lines, and capitalization. Formerly, poems were structured strictly to fit into heroic couplets. In di verging from the ordinary, Emily used romanticism to destroy the authoritarian structure and give way for allowing he poet and reader to feel the way that each individual felt.With no guidelines, one is allowed to be free and let things flow into their ideal shape of religion. For example, the very first stanza, envoy do I love' You, Sir? † is oddly punctuated. The narrator is seemingly repeating a question that has been questioned of her which is suggested by the quotation marks around â€Å"why do I love. † This leads way that the narrator is quoting someone. Secondly, Emily use of nature to explain her simple answer â€Å"Because—† is also characteristic of the American Romantic poets.Romantics love nature because of its sensibility and connection to basic emotions. Nature's design is straightforward. Built to survive and reproduce are its only goals. There are there Just because. Emily first simplistic response is â€Å"The Wind does not require the G rass/ To Answer— Wherefore when He passes/ She cannot keep Her place†. Emily likens herself to blades of grass that are quivered by the wind. Just as when Sir passes she is shaken with Joy Just by his presence. Additionally, the wind does not solicit the grass to tell why it was affected.However, the wind did so inquire the answer would be because. Just as simple as can be Just like nature intended. Later on in the poem, Emily brings up lightening another major player in Mother Nature to further emphasize her argument. Lightening also doe not question why it's impulsive flash of brightness causes an eye to close, â€Å"Because He knows it cannot speak—â€Å". Still if it could express its feeling it will answer because. Thirdly, individualism is key to romantic poets. Her feelings are evident for however this Sir is and she is free in expressing her emotions.Whether Sir is God or secret crush, the reader's own interpretation is vital in this decision. The capit alization of he is significant in the fact that she is most likely referring to God. It is almost impossible to explain why someone has an affinity for a certain someone. Only nature can explain most simply and it answer is â€Å"Because—â€Å". Either way you cannot explain factually why you believe in God or why you had a love at first sight moment. Ultimately nature decides it all. It is as simple as â€Å"The Sunrises—Sire completely Me—/Because He's Sunrise—and I see?/Therefore—Then—/l loveIn conclusion, red is to a rose as Emily Dickinson is to Romantic poet. Emily encompasses all that is Romantic. She was original by revoking the structure of everyday poems of times before, using nature to explore feelings, and use nature as ways to exemplify the things we do. She also made the individual important and the main character to her poems. Overall, this poem is a great example of the legacy Emily Dickinson left to American literature. W orks Cited Dickinson, Emily. â€Å"Why Do I Love You, Sir? â€Å". Poem Hunter. Poem Hunter. N. D. Tuesday. 9 July 2013

A Career as a Finance Officer

Every company desires good business. Their primary goals are to earn money, spend in intelligent ways that will increase the company value, and have enough money left to stay clear of debt. It is critical that a company have good financial management in order to attain these goals. Without the proper direction and implementation of solid financial strategies, few companies will survive.Upon completion of my degree, I am planning to work in the field of financial management as a finance officer.A finance officer directs the company budget toward their financial goals, oversees investments, and the financial objectives of an organization. They may also deal with acquisitions and mergers. I am very interested in finding a position as a finance manager, where I am able to use my education, skills and enthusiasm for finance to promote a company’s interests.It is necessary for a finance officer to be well educated, with at least a bachelor’s degree. The entry market is highly competitive and any additional experience or education obtainable is an advantage. Many companies prefer to hire financial managers with an advanced degree or some experience.As I begin my job search, I will research each company of interest to determine their criteria for hire. I understand that some companies require entry exams or a certificate program through their company for prospective employees.Also, it may be necessary to take a position with less responsibility or compensation in order to obtain the experience necessary to advance. My education in computers is will be an advantage since all financial and inter-office interaction is typically computer based.My excellent communication and people skills will assist me in a position as a finance officer. Since most managers will be directly overseeing other employees, being able to direct projects, assign responsibilities and lead others towards desired goals is critical. It is also important to be able to work in a team envi ronment and to be able to explain complex financial information in a clear way. I believe that these are some of my strong points.A successful finance officer is one who is willing to constantly learn and grow in their field. They must change in response to technological developments and data analysis techniques. They must stay on top of the current trends and information in the financial field and they need to be aware of current tax laws governing their industry.Various seminars and workshops are available for continuing education, which may or may not be required, but are always a good idea. The Internet provides much of the current information in the finance world, but trade journals deliver cutting edge information.The Financial Management Association International, based at the College of Business Administration at the University of South Florida in Tampa (http://www.fma.org/) publishes a quarterly and a bi-annual journal (http://www.fma.org/jaf.htm), and the Association for F inancial Professionals in Bethesda, Maryland (http://www.afponline.org/), offers a monthly publication.Both of these regularly have articles about current research, software development, and information of interest to those in finance fields. They post meeting minutes and notifications of available workshops as well.

Teaching Competency of English Language Teachers

COMMUNICATION AS AN IMPORTANT SOFT SKILL IN LANGUAGE TEACHING Mrs. N. Mahalakshmi D. T. Ed. , M. A. , M. Ed. , NET. , PGDACE. Research Scholar Department of Education Annamalai University ————————————————- [email  protected] com Abstract ————————————————- English is being taught as a second language in our Indian schools. As it is our national language, much importance is given to this language in our education system. The language teachers are expected to be more competent to develop the basic skills of the language so as to develop the communicative competence of the learners.Now-a-days, soft skills are considered as another important aspect of the teachers for efficient teaching. Regarding the soft skills, communication skill is the most important one that is needed by the language teachers to optimize the learning experience of the students. This paper tries to reveal the need of Effective Communication Skill as one of the important soft skill for the language teachers. The concept of soft skills Soft skills can be said to incorporate all aspects of generic skills that include the cognitive elements associated with non-academic skills.Soft skills are identified to be the most critical skills in the current global education and the era of technology. The reorientation of education for sustainability also relates the importance of these soft skills. Soft skills in Education Vast research and expert opinions have been sought in the effort to determine the specific soft skills to be implemented and used in higher institutions of learning. Based on the research findings obtained, seven soft skills have been identified and chosen to be implemented in higher education as: * Communicative skills * Thinking skills and problem solving skills * T eam work force Life-long learning and information management * Entrepreneur skill * Ethics, moral and professionalism and * Leadership skill The important soft skill needed for the language teacher Communication is as important aspect of language teaching. Effective communication skills are required for effective language teaching. Teachers of English are expected to have good command over the language and possess excellent communication skills. Communication skills include – using the target language effectively, the way of speaking, body language and facial expressions, pitch and tone of voice and interpersonal skills.It is possible that they have some presuppositions about communication and communication skills which are considered to be one major factor in becoming an effective teacher. According to Dettmer, Thurston, and Dyck (1996), West and Cannon (1988), and Carl Rogers (1962) communication is among the most important skills for educators to possess. The role of commu nication is emphasized also by Lunenburg & Ornstein (1996, p. 176) as: â€Å"Communication is the lifeblood of the school; it is a process that links the individual, the group, and the organization†.A gap in meaning between the intended and the received message can cause problems in the outcome of even the best teaching decision. Poor listening skills, ambiguous use of verbal and nonverbal language, poor semantics, and differing values are all items that can distort a message. To become effective communicators, educators must be aware of these potential problems and consciously work to eliminate them from their classroom interactions. They must also become knowledgeable about the importance of language in the learning process which gives a vital role to language teachers.Body language of the teacher In the communication skill, the body language and the facial expression of the teacher is of much importance which arrests students’ participation. The ‘presence†™ that a teacher has in the classroom is crucial in determining ‘how much’ learning takes place and ‘how well’ learning takes place. A tension free atmosphere is extremely important in language learning classroom. More than what behaviour reveals, it is the non-verbal behaviour that is of significance. Self respect, confident behaviour and tone and eye contact are some positive indicators.Some of the ways in which body language can improve the desired atmosphere within the class are: * Keeping eye contact with the student you are talking to, and with every student in the class; * Standing ‘tall’ and walking in with head held high, instead of shuffling in, head bowed; * Having a calm, relaxed face – smiling and laughing easily; * Using facial expressions that show you are listening and responding to what the student is saying; * Smiling and nodding when a student is saying something; Linguistic competence versus Communicative competence Language is a tool of communication.One can communicate ideas, thoughts, feelings, opinions, attitudes, information and even misinformation through language. Different people express the same idea in different words. Language is a tool serving four main functions. These important functions are important for effective communication in the language classroom. The important functions of the language are: * Social function * Informative function * Expressive function * Directive function Keeping in mind these four important functions of language, let’s examine if our students are effective communicators in English.Most of our graduates are good at writing beautiful and very literary answers to questions on Shakespeare, Wordsworth and other great writers. However, their literary competence isn’t enough for them to be able to communicate effectively and efficiently in everyday situations. The ability to communicate requires us to use language to perform interpersonal functi ons such as starting a conversation, joining and leaving a conversation, making the hearer feel comfortable, giving options, and so on. Mere linguistic competence isn’t sufficient.Of course, there’s no denying the value of linguistic mastery, which is the basis for communicative competence. Without words and grammar patterns, one can’t think of building communicative competence. However, rules of use are more essential than rules of grammar. Many graduates don’t know how to introduce themselves and how to introduce others; they don’t know how to ask for information politely, how to disagree tactfully, how to offer suggestions, etc. This is one very significant aspect that we need to pay attention to. Secondly, their English is bookish.They don’t know that choice of syntax and vocabulary depends on the topic, the occasion, and the relationship between the speaker and the listener. It’s important to know what to say, when, to whom and h ow. Thirdly, the students need to be told that the vocabulary and syntax of spoken English are different from vocabulary and grammar of written English. They seem to be unaware of the fact that the words and grammar of spoken English are simpler than those of written English. As a result, they don’t use contracted forms and question tags while conversing and their English sounds bookish.Developing the communication skills of the learners In language teaching developing the skill of listening, speaking, reading and writing  skills should be given importance. These language skills are the foundation of communication skills. A good communicator is a keen and interested listener. Even a good listener cannot be an effective speaker. In order to be a good speaker, one has to master the accent, the rhythm and the intonation of the English language. Also one has to mind the tone of voice and make an effective use of facial expressions, gestures, eye contact, and posture.An excellen t communicator uses verbal and non-verbal language to achieve the best effect. In order to develop good communication skills of the students, the language teacher need to * develop the listening, speaking, reading and writing skills * to be able to use language to perform various functions * master the rhythm, accent and intonation of the language * understand the differences between spoken and written language * remember the difference between meanings and messages Conclusion To remedy this situation we need to connect literature teaching with life outside.In language teaching, the academic world and the real world should not stand apart as islands. From the standpoint of the learner, the great waste in the school comes from the learner’s inability to utilize the experiences he gets outside the school. To fill up this gap, the communication skill should be given importance in language teaching. Developing communication skills of the learners requires the efficiency of langua ge teachers. So, the communication skill should be given primary importance both at the pre-service and in-service level of the language teaching.REFERENCE * Applbaum, L. et. al. , 1973, Fundamental Concepts in Human Communication, Confield Press, London * Brown, H. D. 1981, Principles of Language Learning & Teaching, Prentice Hall, Enlewood Cligts. * Corner, J. et. al. , 1993, Communication Studies:An Introductory Reader, Edward Arnold, London. * Dickinsen L. and Carver D. J. 1980. Steps Towards Self-direction in Foreign Language Learning in Schools. ELT. Vol. 35:1-7. * Dickinsen L. 1987. Self-instruction in Language Learning. Cambridge, Cambridge University Press.