Saturday, August 31, 2019
Physiological Adaption Fish Essay
Adaptation of Fish to Its Environment BIO101 March 11,2013 Physiological Adaptation of Fish to Its Environment All organisms around the world are sparsely distributed depending on the environment that best suited to their modes of survival. Organisms undergo adaptation ââ¬â an evolutionary process where they became well-suited to a particular. The process of adaptation happens through the natural selection, whereby nature selects those organisms that suit a certain habitat and sustain them for successive generation and ones that do not perish, hence the theme of survival for the fittest. The surviving species pass the same favorable features to their generation for their further survival after a progressive reproduction. Physiological adaptation of fish to their habitat depends on what the nature favors to suit them. Below is the illustration of the external and internal features of a fish (ââ¬Å"Internal Salmon Anatomy Worksheet Key,â⬠2011): Water bodies have a diversity of conditions that enable fishes to adapt to their survival. The physiological adaptation of these animals varies to a particular habitat, and it relates to how their metabolism works to counter the changing environment. Fish metabolic activities seek to regulate their body functions in any opportune change of their environment and adapt to it. To control the body temperature, fishes undergo physiological thermoregulation. The physiological and metabolic activities regulate the body temperature and maintain it by means of countercurrent exchange system. The countercurrent exchange system is one where the hot blood in the blood vessels, as a result of muscular activities, passes along and gives up some heat to the blood in the adjacent blood vessels, which is flowing to the other parts of the body. This way fishes are able to keep warm. Fish also have the survival tactics in areas where water temperatures are on the point of freezing all the year round ââ¬â like in the Antarctica region. In order to overcome the darkness due to the ice over the water surface, fish have a specialized sensory system called mechanosensory lateral line, which enables them to sense the motion of other animal in their environment and allows them to feed. However, some fish subspecies normally live in the freshwater and in seawater depending on the environmental opportunities that affects their chances to survive (WhyEvolutionIsTrue, 2012). Freshwater fish have a mechanism, which makes possible them to concentrate salt within their bodies in the environment of salt deficiency; consequently, marine fish have the capability to excrete excess salt in the hypertonic environment. The latter as well has chloride cell in their gills, which produce enzyme called gill Na+/K+ATPase that enables them to ride their plasma of excess salt build up when they drink seawater. The enzyme is applied to pump sodium out of their gills using the energy generated from the muscle. Freshwater fish have a physiological mechanism that allows them to concentrate salt and compensate their sanity environment. They achieve the balance of the body and that of the surrounding by producing very dilute, copious urine to rid them of the excess water in their body while taking ions through their gills (ââ¬Å"Fish in Their Environments: Habitats & Adaptation,â⬠2010). Their adaptation favors their capability to adjust to the changing environment. The swordfish has a modified eye muscle with a concentration of mitochondrion cells. The mitochondrion organelles perform the duty of breaking down of food to obtain energy for normal eye movement and to provide heat for blood going to the brain. The physiological system of fish also operates within a fluid environment despite the change its environment. Osmoregulation in fish aims to get a stable balance of uptake and loss of water and solutes through their excretory organs. Marine fish, for example, bony fishes, are hypo-osmotic to seawater; respond to loosing water in their bodies by osmosis and gain salt by diffusion and from the food they eat. They also take up chloride ions through their skin and gills to balance osmotic condition of their environment. In conclusion, fish, like all other animals, have their mode of adaptation to survive in their habitat regarding the circumstances that occur. They will continue to reproduce passing those adaptations to their next generation. References Internal salmon anatomy worksheet key. (2011, January 14). U. S. Fish & Wildlife Service. Retrieved from http://www. fws. ov/r5crc/salmon/workbook/homework_salmon_anatomy_internal_key. htm Fish in their environments: Habitats & adaptation. (2010, March 3). Earthguide. Retrieved from http://earthguide. ucsd. edu/fishes/environment/environment_zones. html WhyEvolutionIsTrue. (2012, April 11). Parallel adaptation in fish: Same genes used over and over. Why Evolution Is True. Retrieved from http://whyevolutionistrue. wordpress. com/2012/04/11/parallel-adaptation-in-fish-same-genes-used-over-and-over/
Mrf Tyre Suggestions
EXECUTIVE SUMMARY 0. 1 0. 1. 1 GENERAL Nylon Tyre Cord: Nylon tyre cord is made from high tenacity continuous filament yarn by twisting and plying. There are two major types of nylons used as tyre cord, i. e. nylon-6 and nylon-6,6. The properties of nylon-6 and nylon-6,6 vary marginally and are controlled by the manufacturing process, type of stabilisers and additives used. In India only nylon-6 is produced commercially for tyre cord. Thetypesofnylon-6tyrecordusedinIndiaare840/2,1260/2,1260/3, 1680/ 2 and 1890 / 2 where number indicates denier of ply / no. of plies in the cord.The denier per filament is 6. 0. 1. 2 Tyre Cord: The other materials used as tyre cord are cotton, rayon, polyester, fibre glass, steel,aromatic polyamides. Each of these materials has its own merits and demerits. The major criteria for acceptance of any material in tyre are its tensile strength, dimensional stability, durability, thermal stability, hysteresis and adhesion. Tests and actual application conditio ns have shown that although other cord materials meet one or more specific requirements, nylon by and large meets the desirable requirements for almost all the performance criteria. . 1. 3 Tyres: The tyre cord fabric provides the tyre its fundamental properties such as shape, size, load carrying capacity, abrasion resistance, fatigue resistance, etc. A tyre is a composite of cord and rubber. There are three varieties of tyres viz. bias-angle tyres, radial tyres and bias-belted tyres. They differ in the way the tyre fabric plies are laid inside the tyre. 0. 1. 4 Manufacturing Process: The manufacturing process for nylon-6 tyre cord can be broadly divided into following production steps: (a) Polymerisation of caprolactam to manufacture nylon chips. (b) Extraction and drying of chips. (c) Melt spinning of chips to manufacture nylon tyre yarn. (d) Preparation ofcordfrom tyre yarn by twisting and plying. (e) Recycling of nylon-6 waste. 0. 1. 5 Polymerisation: Nylon is made by polymerisat ion of caprolactam with certain additives like amino acids and dicarboxylic acid salts and certain heat stabiliser such as copper based organic compounds. The polymerisation process involves ring opening polycondensation and polyaddition reactions. All the three polymerisation reaction steps are equilibrium reactions.A typical process of polymerisation of nylon can be either a batch or a continuous process. The continuous process, developed after the batch process was commercialised, offers simplicity of design, ease of operation and control and high capacity. An optimal polymerisation process would involve two stages, wherein, the first stage involves pressure at high initial water concentration. In the second stage a rapid transition from high water content to a low water content is achieved by release of pressure and subsequent application of vacuum. Industrial grade nylon-6 with relative viscosity 3. 2 to 3. has higher degree of polymerisation compared to textile grade nylon-6 w ith relative viscosity 2. 2 to 2. 6. 0. 1. 6 Extrusion and Drying of Chips: The nylon chips are washed to remove water soluble impurities and then dried. The process maybe batch or continuous. 0. 1. 7 Melt Spinning: The polymer chips are melt in extruder. The molten polymer is then spun through a spinnerette. The molten filaments are quenched or cooled by a laminar flow of air. The spin finish is applied on filament and then wound on spin bobbins and drawn to make tyre yarns. In the conventional process, the spinning and drawing was done in two steps.In the spin-draw process, a step is reduced compared to 2-step conventional process. As a consequence, some sources of process disturbances are eliminated which results in improved yarn uniformity. 0. 1. 8 Preparation of Cord: Nylon tyre yarns are then twisted in S or Z direction and plied having 2 or 3 plies to form a tyre cord. 0. 1. 9 Recovery of Nylon-6 Waste: Depending on the quality of waste, any of the following method may be use d for recycling of nylon waste. Direct use of fibre waste RegrannulationPolymer Powderi) without melting ii) with melting. i) deploymerisationandfilteration i) precipitation from solutions Recovery of caprolactam by deploymerisation. Recovery of amino caproic acid. The first three processes require relatively purer and undegraded form of waste. Amongst the last two, caprolactam recovery is mostly adopted by Indian industry due to ease of purification of recovered caprolactam. 0. 1. 10 Raw Materials, (Catalysts, Additives, Spin Finish Etc. ): For nylon-6, the only major raw material required is caprolactam. Water is required as an initiator for ring opening during polymerisation. Nitrogen gas is required for blanketing, drying and conveying of polymer. 0. 1. 1 Additives/Catalysts: Aminoacids and diamine dicarboxylic add salts which provide water on condensation have been found to be useful for enhancing the rate of polymerisation. 0. 1. 12 Stabilisers: Nylon is susceptible to degrada tion by Lght, heat, oxygen etc. To make it suitable for the purpose of tyre cord, stabilisers are added. The light stabilisers used are manganous chloride + hypophosphorous add and imidazoles. Diphenylamine and acetone condensates give excellent resistance to heat. Copper complexes as halides, acetate, phosphates, salts of higher fatty adds like stearates, palmitates, laurates, etc. re quite effective as heat and light stabilisers. Spin Finish: The functions of spin finishes are to reduce friction to get proper filament cohesion and to provide static protection. Lubricants used to reduce friction are usually mineral oils, fatty glycerides. The antistats used to provide static protection are surface active organic compounds. In case of nylon tyre cord, where molten polymer is drawn in yarn stages and fabric is dipped at a very high temperatures (upto 210à ° C), preference has been towards the use of non-fuming type spin finishes. 0. . 14 Major Capital Equipments: The major capital e quipments for each section of the plant viz polymerisation, spinning, cord making and caprolactam recovery are listed in para 1. 7. 0. 1. 15 Development of Technology: The developments in technology canbe grouped into the following: Product development. Development in the polymerisation process. Development in extraction and drying. Development in melt spinning process. A. Product Development: Till 1937, cotton used to be the only tyre cord material throughout the world. Thereafter rayon became popular.Subsequently with the advent of synthetic fibres, the use of nylon increased, which continues to be used in both the developed and developing countries, Other materials used are polyester introduced in 1962, fibre glassin 1967 and steelin 1970. NTC was earlier spun as 210 d-yarn and then plied to give 840 d tyre cord. With the development of technology, now, directly 840 d yarn can be spun and then plied to get denier ranges of 1260, 1680 and 1890 tyre cord. The denier per filament ha s however remained^ fe though some attempts have been made to use 8 deniers filaments also. It has been possible to increase tenacity from 8 gpd to9. gpd. B. Developments in Polymerisation Process: In early process, a relatively crude batch autoclave reactor was used for polymerisation. The V K tube reactors for continuous polymerisation, were introduced during early 50s. Initially, V K tube reactor had capacities of 1. 5 TPD which has now been increased upto 40 TPD. Over a period of time, number of stages of polymerisation has also increased from one to seven. Continuous developments have also taken place for modifying the design of reactors to achieve plug flow condition and uniform flow and temperature gradient, improve residence time, conversion rate and quality of products.The details of some such developments are discussed in para 1. 8. C. Developments in Extraction and Drying: In this area also, batch type extraction and drying process have been replaced by continuous process es. Chips are now stored in S. S. tanks and conveyed pneumatically to spinning section. D. Developments in Spinning Process Melting of chips was done by oil heated grids in the pre-world war era, then by electrically heated grids. In the late fifties a short barrel screw extruder was introduced which is now replaced by longbarrel extruder.Another development is increase in the spinning capacity by increased number of spinning positions and also increased number of ends per spinning position. Other improvements are in yarn solidification and quenching process, spin finish application methods etc. During late seventies, the spin-drawn process was introduced to get higher productivity and better product. During the same period, high speed spinning with take up speed of 3,000 to 4,000 mtrs/min (as compared to upto 1500 mtrs/ min in case of conventional process) was developed. 0. 2 . 2. 1 STRUCTURE OF INDUSTRY AND STATE OF THE ART: Structure of Industry: Licensed and Installed Capacity T he total licensed and installed capacity of NTC in India at present is around 29,500 TPA and 22,500 TPA respectively, as per the details given in para 2. 1. 10. LOI / IL have been issued which cover capacity of 54,200 TPA. Production: The production of NTC in India started in 1971 with 595 tonnes and increased to around 23,600 tonnes in 1985. NTC has replaced rayon tyre yarn as tyre cord yarn and market share of NTC at present is 75%.Capacity Utilisation: The licensed and installed capacity is based on certain denier while production is of different deniers and the product-mix of all manufacturers varies depending on market requirements. However, the overall average capacity utilisation ofNTCinIndiahasbeenaorundl05%duringthelastfiveyears. Distribution of Units: Active NTC manufacturers are public limited companies spread almost all over India with average capacity of 4000 TP A. Performance of Industry: The production, sales, net fixed assets, net worth of all the NTC manufacturers s how an upward trend.There is a general growth rate of 20% per annum on sales turnover during last five years. Import/Export: Import of NTC increased from 1677 tonnes in 1980-81 to 5295 tonnes in 198384 The price of NTC at international level is just half of the price in India. This is mainly due to high cost of raw materials, higher conversion costs due to old technologies and small size of Indian plants as compared to the plants in developed countries. Due to this, export of tyre yarn from India is negligible. Sources of Technology and their Broad Performance: Unitika, Japan has supplied technology and plant to three out of five Indian manufacturers of NTC.The other two manufacturers started with imported plants. The details of these collaborations are given in para 2. 15. 2. Performance of all the collaborations is satisfactory. Though, indigenous technology comprising of batch polymerisation and conventional spinning process have been developed, none of the NTC plants in India ha s yet started with such indigenous technology. The latest technologies comprising of multi-stage continuous polymerisation, continuous extraction and drying of chips, spin draw technology or high speed spinning process are not yet available indigenously.The recent trend in India to look to the ââ¬Ëeast' for technology may be due to the availability of technology comparable to those available from the west at a lower know how fees and lower plant costs. 2. 2 Technological Status of Indian Industry (Unit wise): The comparison of installed capacities, actual production and capacity utilisation and financial analysis in terms of net sales, net fixed assets, net profit and net worth over the period of last five years and present specific raw materials and utilities consumptions, wastage generation and recovery etc. for the following selected units is given in para 2. . J. K. Synthetics Ltd. National Rayon Corpn. Ltd. Shri Ram Fibres Ltd. Nirlon Synthetics Fibres & Chemicals Ltd. Barod a Rayon Corporation Ltd. Details of the historical background, sources of technology, research and development efforts, results achieved, etc. for each of the above units are summarised hereunder. a) J. K. Synthetics Ltd: J. K. Synthetics Limited, pioneer in the manufacture of NTC, have absorbed to a great extent the conventional technology over the last 2 decades. The company has its own research insituteââ¬âThe Sir Padampat Research Centre (SPRC) and has recently floated a companyââ¬âJaykay Tech. hich can supply the conventional technology. As far as horizontal transfer is concerned, conventional technology developed and absorbed by J. K. has little commercial relevance. J. K. ââ¬Ës licenced and installed capacities are 6000 to 5000 TPA respectively. The company has recently entered into technical collaboration with M/s Tong Yang of south Korea for their latest Spin-Draw technology. The new unitwithacapacityofl2. 5TPDiscomingup. b) The National Rayon Corporation Ltd. (N ational Rayon): National Rayon commenced production of rayon tyre cord in 1961 and nylon tyre cord in 1976.The company has a technical collaboration for the latter with Unitika, who have supplied the technology and plant. The company had installed indigenously developed equipment for conversion of polymer waste to granules of spinnable grade. They have successfully indigenised manufacturing of all additives through in-house research as well as developing other suppliers. National Rayon's licensed and installed capacities are 5,000 and 5,250 TPA respectively. The company's performance during 1983 and 1984 had been adverse due to closure of plant because of labour problems.The production during 1985 to 1988 is more than the licensed capacity. As a part of modernisation and expansion programme they have installed spin-draw machines. The spin-draw yarn produced and made into fabric has alreadybeenapprovedbythecustomers. National Rayon have a fullfledged R centre approved by the Governme nt of India and is engaged in import substitution, technology absorption, machinery development and trouble shooting. National Rayon have developed process technology for polypropylene industrial yarn of high tenacity and has been regularly supplying polypropylene yarn for market development.It has also developed rayon industrial yarn, an industrial fabric for non tyre applications. National Rayon have recently installed, for the first time in India, air jet looms for making tyre fabrics of high quality. c) Shri Ram Fibres Limited (SRF): SRF' s plant for manufacture of nylon tyre cord and yarn was commissioned in 1974 in technical collaboration with Unitika. Company's present capacity is 6,335 TPA. SRF has a full-fledged Research and Development Laboratory and is constantly updating process methods and technology for product development.SRF have an independent research institute too. A very recent process developed and patented is that for polymerisation of nylon-6,6. d) Nirlon Synt hetic Fibres & Chemicals Ltd. (Nirlon) Nirlon commenced production of nylon filament yarn and tyre cord in 1962. The company had recently gone into technical collaboration with Zimmer for an expansion of their nylon tyre cord plant. Their present capacity is 5,000 TPA. Zimmer's design is based on multi polycondensation process and single stage spin draw process. Nirlon has a well established research and development base.The company had absorbed the conventional technology for manufacture of nylon tyre cord and is concentrating in developing and acquiring more modern manufacturing process. e) The Baroda Rayon Corporation Ltd. (Baroda Rayon) Baroda Rayon commenced production of rayon in 1962. Subsequently, the company commenced production of nylon tyre cord in 1981 in technical 8 collaboration with Unitika. Their present installed capacity is 2,000 TPA. Expansion of their plant to 4,000 TPA is under implementation and is expected to be commissionedby end 1987. f) The following new un its likely to come up in the near future.The present status / each of these projects is given in detail in para 2. 1. GarwareNylons Limited: Presently the company manufactures nylon and polyester filament yarn and is expanding its activities to manufacture nylon tyre cord, nylon tyre and industrial fabric in collaboration with Allied Corporation, U. S. A. , the largest producer of tyre cord in the world. Century Enka Limited: The company's major activity is manufacture of nylon and other man made fibres and plastics. Century Enka has a collaboration with their principals Enka International of Holland for the technology for manufacture of nylon 6 tyre cord.The production has commenced recently. Ballarpur Industries Ltd. andE. I. Du Pont Nemours & Co. of U. S. A. : They have jointly proposed to promote a Rs. 130 crores joint venture company to produce nylon-6,6 tyre cord for the first time in the country in collaboration with economic development corporation of Goa. An annual producti on of 16,700 tonnes of nylon-6,6 tyre yarn is envisaged. Kanoria Alkalies & Plastics Ltd: They have entered into collaboration for technical know-how, plant and machinery for manufacture of nylon tyre cord with Unitika which has been approved by Government of India. 0. 2. Status of Raw Material Industry: At present only Gujarat State Fertiliser Corpn. Ltd. , Baroda manufacture caprolactam with the capacity of 20,000 TPA in India. Three LOI have been issued by the government with a total capacity of 2,20,000 TPA. The demand projections for caprolactam made by the Committee for Perspective Planning of Petrochemical Industry by 2000 AD are 1,16,000,1,96,000 and 3,02,000 TPA for year 1989-90,1994-95 and 1999-2000 respectively. Hence, till the units who have LOI go into production, imports of caprolactam is unavoidable. The quality of indigenous caprolactam in terms of its permanganate no. nd also in terms of consistancy between various batches of manufacture is not comparable to that of imported caprolactam. 0. 2. 4 Status of Tyre Industry International: There are three types of tyre construction viz. , bias, bias-belted and radial. Radial and bias belted construction are more efficient than simple bias construction. In the world tyre market, radial tyres dominate. They were first inroduced in passenger cars then in commercial vehicles, buses and truck respectively. In U. S. A. market, no rapid change over from bias to radial tyres took place because of the tremendous capital investment required.Instead, belted bias tyres which could be manufactured on existing equipments were developed. The current trends in tyre design and manufacturing include: Use of fewer fabric plies in tyres by utilising larger and stronger cords. Use of special treatments in yarn manufacturing of the cord processing to reduce the creep of cords in tyre. Use of newer fibres such as polyester and modified nylons etc. 0. 2. 5 Status of Tyre Industry -Indian: The installed capacity of Indian t yre industry is 12 million nos. per annum, the estimated demands of tyres by 1989-90 and 1994-95 are around 21 and 31 million nos. espectively, as per estimates of Automobile Tyre Manufacturers' Assocation (ATM A). Preference so far has been towards bias angle, because of the practice of overloading; practically no care of tyres by owners / drivers and poor road conditions. However, some radial passenger car tyres have also been introduced in the market. Due to the higher melting point of nylon-6,6 and polyester as compared to that of nylon-6, the tyre curing temperature can be increased to 250à ° C from 210à ° C (for nylon-6). This would make curing of tyres faster and hence reduce curing cycle.This would result in higher output and also higher productivity. In practice, howevr, fast curing is not realisable in case of heavy duty tyres as the thicklayer of tread rubber will get distortedby fast curing. To take advantage of this higher productivity, the tyre manufacturers will hav e to install higher capacity curing furnaces, which will require substantial investment. Hence, before tyre manufacturers decide to install such furnaces, they would like to confirm regular availability of nylon-6,6 tyre cords at reasonable prices preferably from more than one supplier. 10The switch over from nylon-6 to nylon-6,6 would also result in more down time in tyre manufacturing. Similarly switch over from nylon to polyester requires change in dip condition, double dip processing and more downtime. Hence, whatever nylon they use, they will use it for 100 % of their requirements. 0. 2. 6 Tyre Cord and its Suitability for Various Types of Tyres: Different types of tyres require tyre cords with different properties, indicated in para 2. 12. Radial tyre or belted tyre designs take adavantage of these different requirements by placing different types of cords in the belt and in the carcass.As per the test carried out by one of the Indian radial tyre manufacturers, nylon-rayon was found to be the best combination for Indian conditions. 0. 2. 7 Status of Tyre Cord Industry -International: Major varieties of cords suitable for tyres are cotton, rayon, nylon, polyester, steel, glass fibres and aromatic polyamides. Although flat spotting shown by nylon was originally objected to strongly, nylon has continued to be the preferred tyre cord material because of its price and its superior thermal and fatigue resistance.Nylon-6 is used in Europe and other developing countries while nylon-6,6 is more prominent in U. S. A. mainly due to the manufacturing facilities established and availability of basic raw material. During the last ten to twelve years development have been largely of evolutionary nature aiming to overcome limitations of existing tyre fibres and to make them acceptable for wideruse. 0. 2. 8 Status of Tyre Cord Industry in India: Tenacity of NTC available to Indian tyre manufacturers locally varies from 8. 4 to 9. 4 with average value of 9. 2 gpd.The pres ent demand of NTC in India is around 25,000 TPA which is likely to grow to 40,000,50,000 and 61,000 TPA by 1990,1995 and 2000 AD respectively. At least for next 10-15 years, even in case of radial tyres, nylon would continue to remain as one of the components either in carcass or as belt material. With the existing manufacturing facilities, the type of vehicles in use and existing road conditions, nylon-6 will remain the material of choice except for a small quantity of radial tyres for passenger vehicles where polyester may prove to be superior.At present very little nylon-6,6 is used in India, both for textiles and industrial applications. Besides nylon-6,6 is not produced indigenously. Nylon-6,6 is costlier than nylon-6 worldwide and is likely to be more so in India. Nylon-6,6 is unlikely to be used by tyre companies for their bus and truck tyres 11 (weightage 80%) in near future, mainly due to generation of high shoulder temperature. In view of the above, establishment of fresh production capacities for nylon-6,6 industrial yarn in India may not have much scope considring interest of industry as well as the end-users. . 2. 9 State ofthe Art Scene (International) Twenty five leading manufacturers of NTC in the world are listed in para 2. 15. 1. SalientFeatures of Contemporary Technologies: The technology for manufacture of NTC is standardised as far as polymerisation process is concerned. Product characteristics of different technologies may vary marginally depending upon the type of additives and stabilisers used, design of equipment and control method of production parameters. However, design of spinning plants differs from supplier to supplier.Salient features of contemporary technologies of the following technology suppliers who have supplied/offered technologies to India are discussed in detail in para 2. 15. 2. Zimmer A . G. , West Germany. Lurgi GMBH, West Germany. Unitika Ltd. , Japan. E. I. DuPontDeNemours&Co. ,U. S. A. SniaBPD, Italy. Some importa nt features of these technology suppliers are described in subsequent paragraphs: Zimmer A. G. : Zimmer offers production of nylon-6 in continuous polymerisation operation. The specific Zimmer design allows lower water/chip ratio resulting in a high extract content in washing water, thus saving energy to caprolactam recovery plant.The company offers economic standard design for production capacities of 10 to 50 TPD for high viscosity polymer (tyre cord grade). For caprolactam recovery, Zimmer prefers batch operation for higher flexibility regarding quality and capacity. The plant is specifically designed for low caprolactam concentration in waste water, so that it can be either reused in polymerisation plant, or discharged as innocuous waste. 12 For spinning and drawing, Zimmer offers both, the two step separate process and the one step spin draw process. The former process favours production of: i) lower deniers economically i) low shrinkage yarns iii) large variety of yarn types. The one step spin draw process favours continuous production of heavier denier yarns in large capacities. It results in improvedyarn uniformity. .Lurgi GmbH: Lurgi offers both continuous polycondensation and batch polycondensation route for nylon-6 for use in tyre cord and other technical/ industrial yarn. Lurgi also offers caprolactam recovery unit deploymerisation and condensation plant and equipment for evaporation of the extracted water, treatment of concentrated caprolactam water and distillation.The company offers technology for conventional speed spinning as well as high speed spin draw process. Untika Ltd. , Japan: Unitika offers continuous polymerisation process having a pre-polymeriser coupled with continuous extraction, washing and drying of chips. It also offers caprolactam recovery process. In its polymerisation process, Unitika claims 50% saving in polymerisation time. Viscosity of melt can be adjusted as per requirement during pre-polymerisation. The spinning process offered is both conventional spinning and drawing as well as spin draw process. E. I. Du Pont de Nemours & Co. U. S. A. : Du Pont's industrial yarn process is based on nylon-6,6 salt i. e. hexamethylene diammonium adipate. The company has practised the continuous polymerisation technology and has developed conditions which maximise conversion, maintain precise viscosity control and ensure extended service life. Nylon-6,6 is produced continuously in a series of five vessels ââ¬â evaporator, reactor, flasher, separator and finisher. Streamlined design of polymer vessels and distribution system minimises gel formation, recapture of heat and diamine and hence reduces cost of operating system. 3 Preferred Du Pont technology is based on coupling the spinning machine directly to the continuous polymeriser. It also utilises coupled spindraw. The advantages are elimination of chip making, handling, drying and remelting as also provision of maximum polymer uniformity. Du Pont offers exten sively developd quality control and laboratory testing procedures and a single, specially formulated fibre finish for all products. SNIABPD: SNIA is an Italian company giving process knowhow, plants and equipments for manufacture of nylon filament yarn and tyre cord.The company has the spin draw technology. 0. 2. 10 Latest Developments in Manufacturig Process/Design of Equipment: Product Development: Recent developments have been in the areas of improved dimensional stability of the cord, higher tenacity of tyre cords and improved heat stabiliser formulations to reduce the mechanical loss due to heat generation in tyres. Improvements in Polymerisation Process: Recent developments in this area include attainment of higher molecular weight by vacuum finishing, solid phase poymerisation to get final polymer free of extractables etc. addition of chain ââ¬â coupling agents. Other significantadvances includes: For removal of unconverted monomer For lower level of water extractables in nylon polymer For improved flow and temperature distribution For transferring heat to the centre of the reactor and also to equalise flow rates Improvements in Spinning Process: The developments are directed to achieve higher spinning output upto 97% and to spin NTC of high molecular weight and melt viscosity to have high tenacity tyre cord upto 10 gpd. 0. 2. 1 Critical Evaluation of Contemporary Technology: During initial stage the technology of the synthetic fibre remained with only a 14 Falling film / spray reactors, reactorsworkingundervacuum. Organic polymer coating, internally, ofVK tube reactors. Incorporation of a tubular heat exchangerinthereactor. Provision of perforated plates and vertical aluminium partitions. few giants in the category of front line producers. Because of their conservative attitudes, no rapid technology changes were forth coming.However, the role played by the independent engineering companies which took the risks has been a great boon in the developme nt of technology. Technology suppliers can be broadly classified as front line suppliers having production back up like Unitika, Du Pont etc. and engineering companies like Zimmer, Lurgi, etc. Technology from front line producers is superior technology, requiring less time and wastage generation during production stabilisation at plant commissioning stage. However, know-how fees of these suppliers is higher compared to that of engineering companies.Engineering companies have vast experience in plant erection, basic and detailed engineering. Know-how fees of these companies are comparatively lower. The present trend is to look to the East for technology compatible with that of western countries as it is more economical, although of late, they too are becoming expensive. A project profile based on the typical offer of contemporary technology for a 6,000 TPA NTC project is placed at Annexure I. Instead of putting up many small size plants, it would be advisable to put up a few large si ze plants for economy of scale.The improvement in quality of polymer is a developmental activity which is continuous at international level. Indian companies should also endeavour to improve quality by adopting new engineering and equipment development either through their own R department or through their technical collaborations. New and better type of additives and catalysts development at international level should be incorporated by the Indian companies. Spinning plants having higher spinning efficiency and compactness, are always advisable for a country like India,to reduce the cost of production.One step process of very high spinning speed to make full drawn yarn may not be relevant in India, as at present most of the weaving and cord preparatory processes are of conventional type. So the ideal thing would be to change over to readily available higher throughput equipment. 0. 3 0. 3. 1. TECHNOLOGY ABSORPTION AND GAPS: R Efforts in National Laboratories/Institutions and Their Tie Up With Industry: Institutions like IIT, S ASMIRA, MANTRA etc. , private research institutions like 15 Sir Padampat research Centre, Shri Ram Institute of Industrial Reserach etc. nd in-house R centres of manufacturing industry are engaged in minor research projects for optimisation of production parameters or improvement of product characteristics. Developing countries like India although gradually laying more emphasis on its research and development, have not been able to catch up with their developed or advanced counterparts i. e. there is a considerable time lag between adoption of any particular process in some advanced part of the world and its commissioning in India. The efforts made to bridge this gap in the following areas are as folio ws: Indigensation of capital equipments, spares etc.Indigenisation of raw materials. Modifications and improvements in process, plant and equipments. The major constraint faced by manufacturers of indigenous equipments and spares are: non -availability of design and detailed engineering drawings. patented designs of proprietary equipments by technology suppliers, sources of capital equipments recommended by technology suppliers, limited indigenous demand of such equipments. 0. 3. 2 Indian Standards Specification: As a part of standardisation, the Bureau of Indian Standards has developed IS Specifications for methods of tests for tyre yarns as per the following details.IS:4910 Parti Part II Partlll Part IV Part V PartVI Tyre yarns, cords and tyre cord fabrics made from man made fibres, methods of tests for. Linear density. Breaking load, elongation at break and tenacity. Dippickup Heat shrinkage and heat shrinkage force. Wet contraction and wet contractive force. Definitionofterms. 16 Part VII Part VIII Part IX PartX Part XI Heat degradation. Thickness (gauge) Sampling Growth Commercial weight. The specifications of polyamide tyre cord warp-sheet for automotive tyres published by the bureau is, IS 11926:1987. The spec ifications are given in Table 4. . 3. 3 Profitability of Indian Industry and its Relationships with Technology: At present the profit margins of NTC manufacturers are fairly satisfactory, even with the present conventional technologies and small capacity plants. Interaction with user industry by NTC manufacturers is also quite good. However, the constraints in respect of technology absorption faced by Indian NTC industry are: low capacities of plant. imported capital equipments, parts and spares, non-availability of trained technological manpower, poor labour ââ¬â management relations. . 3. 4 Export Performance Due to high cost of raw materials and also higher conversion costs due to small capacity plants based on older technologies, the Indian NTC industry has not been able to contribute in the export market. 0. 3. 5 Comparison of Product Specification Between Units: In India, the product range and specifications of all the manuacturing units is almost identical. 0. 3. 6 Modern isation Need: As mentioned earlier, cost of production of Indian NTC industry is higher due to small capacity plants based on older technologies.There is an urgent need to modernise these plants to adopt most advanced technologies and a much higher level of operations. 17 However, for such modernisation substantial funds willlbe required. Financial Institutions are giving soft loans under technology development funds and industries have started taking advantage of this scheme. 0. 3. 7 Technology Gap: Technology gaps in following areas have been identified and discussed in para 3. 9 Product developments Plant capacity Polymerisation process Melt spining process Indigenous manufacture of plant and equipments Indigenous availability of raw materials, additives and spin finishes etc.Internationally, cords with yams having 8 deniers per filament and upto 3,000 deniers of cords and 11 gpd tenacity are available, while in India cords with yarns having only 6 deniers per filament and 9. 2 g pd tenacity are manufactured. The average plant capacity of NTC in India, till 1983, was 2,000 TP A against the defined economic size of plant of 6,000 TP A. Polymerisation: Since the modern continuous polymerisation, extraction, washing and drying systems are suited to large capacity, till recently only conventional batch processes were used.Further, continuous polymerisation lines eliminating chip formation (especially in nylon-6,6) and remelting are not in use at preesent, in India. Melt spinning: More efficient large capacity spinning equipments are being used in the world. These have sophisticated yarn sensing and monitoring systems and hence the quality of yarn is much better with higher throughput. Such latest spinning processes are not available in the country and such technology is now being imported. 18 Reasons for technological gaps are: seller's market situation large number of small capacity plants. otalabsence of exportmarket. good financial performance of Indian Indus try even with the available technologies. general / absence of R&D efforts and know-why exercises, limited developments in the Indian automobile industry, lackof product upgradation at tyre manufacturer's end. To bridge the technological gaps, import of latest spinning equipments and process know-how for spin draw and high speed spinning process, designs and drawings for modernisation of existing polymerisation processes are required. 0. 4. 0 SUGGESTED: STEPS TO BRIDGE TECHNOGICAL GAPThe following suggestions are made to bridge the technological gap: a) Latest technology comprising of continuous polymerisation in two stage V K Tube reactors, continuous extraction and drying of chips, spin draw technology or high speed spinning processes for fully oriented yarn may be imported and horizontally transferred in India. Although some pilot units have been installed by spinners, the industry seems to be waiting for customers' acceptance. b) Develop indigenous manufacture of selected equipm ents, wherever it is economically viable and import only latest plant and equipments on selective basis. ) Develop basic and detailed engineering expertise in Indian engineering companies to necessitate import of only design and drawings for new plants rather than package import. An engineering organisation having expertise in basic and detailed engineering should be encouraged for development and transfer of technology for NTC and related products. d) Widen R&D efforts both at industry and research institutions level with active association and close cooperation between them. e) Provide necessary incentives to indigenous development of manufacture of plant and equipment. 9 f) Permit only large sized plants. g) Provide incentives for intensified research activities at industry level with close monitoring of such incentives. Establish a central tyre research institute with facilities to test developments in new designs of tyres, new tyre cord materials and modifications in tyre cord materials. Develop skills in technical personal, by arranging training abroad or by arranging traimng programmes by institutions like IIT, S ASMIR A, etc. and constant interaction with foreign experts. 20
Friday, August 30, 2019
Biometrics Term Paper
Biometrics Meredith Thomas Strayer University 1 Biometrics, according to Foster, ââ¬Å"is the science of using technology to automatically identify an individual based on physical, biological, and behavioral characteristics. â⬠There are two classification systems in biometrics and they are: physiological and behavioral. Physiological characteristics pertain to fingerprints, facial recognition, DNA, hand geometry, the shape of your body, iris recognition, etc. Behavioral characteristics pertain to voice recognition, handwriting, the way that you walk, etc.There are also two categories for the use of this biometric information and they are: access control, and remote identification. Access control pertains to the prevention of others from gaining access to information. Remote identification helps to identify a person through fingerprints or hand geometry. According to globalsecurity. org (2000-2010) they have given biometric technologies the following characteristics: Universali ty: Every person should have the characteristic. People who are mute or without fingerprints will need to be accommodated in some way.Uniqueness: Generally, no two people have identical characteristics. However, identical twins are hard to distinguish. Permanence: The characteristics should not vary with time. A personââ¬â¢s face, for example, may change with age. Collectability: The characteristics must be easily collectible and measurable. Performance: The method must deliver accurate results under varied environmental circumstances. Acceptability: The general public must accept the sample collection routines. Nonintrusive methods are more acceptable. Circumvention: The technology should be difficult to deceive. Now letââ¬â¢s get more into biometrics! Fingerprinting is one of the most popular physiological characteristics in biometrics. No two people on this earth have the exact same fingerprint, which helps in distinguishing where a person has been, and what they have touch ed. Once a criminals fingerprints have been recorded in IAFIS (the Integrated Automated Fingerprint Identification System), then they are permanently recorded and easily traced. Another physiological characteristic is facial recognition, which is newer to the scene than fingerprints.While it may be one of the easiest to use, the environment in which it is used definitely controls it. A mug-shot is the ideal way to capture facial recognition, because it is a controlled environment. One of my favorite physiological characteristics is the use of the iris for identification. According to globalsecurity. org (2000-2010), ââ¬Å"The technology is based upon the fact that no two iris patterns are alike (the probability is higher than that of fingerprints). The iris is a protected organ which makes the identification possibilities lifelong. Criminals may be able to duplicate fingerprints, but not irises. Some behavioral characteristics associated with biometrics are, handwriting and voice r ecognition. Every person has their own unique handwriting, it is measured by the rhythm, pressure, and flow that one applies to the paper while writing. Voice verification is tough to analyze, because a personââ¬â¢s voice changes if they have a cold, or if they are over-excited, anxious, nervous, afraid. Background noise is also a factor. All of the above mentioned characteristics can be used in access control and remote identification.Iris identification is used more and more often for security purposes in passports, hospitals, high profile building access, etc. 3 There are new and emerging technologies in the biometrics field such as: vein scan, facial thermography, DNA matching, blood pulse, skin elements, nailbed identification, gait recognition, and ear shape. Vein scan is a non intrusive scan of the veins on the back of oneââ¬â¢s hands hand, they are very unique patterns that are formed before birth, and only change in size throughout oneââ¬â¢s lifetime.Facial thermog raphy is very similar to facial recognition, except an infrared camera is used. Skin elements are an interesting biometric technology because just like fingerprints or irises everyoneââ¬â¢s skin makeup is different. Gait recognition is one technology that I would have never thought of, but it makes a lot of sense. According to globalsecurity. org, ââ¬Å"A personââ¬â¢s musculature essentially limits the variation of motion, and measuring requires no contact with the person. One disadvantage to gait recognition could be loose fitting clothing, the body is hidden and you donââ¬â¢t have much to compare. Everyday new and different technologies are emerging in the biometrics field. I canââ¬â¢t wait to see what happens in the next ten years, and what I will have to look forward to working with in the future. 4 Foster, Raymond E. (2005). Police Technology. Pearson Prentice Hall. Upper Saddle River, New Jersey. http://www. globalsecurity. org/security/systems/biometrics. htm Sit e monitored by John Pike.
Indo-Burma Forests
Forestry ââ¬Å"Indo-Burma Forestsâ⬠Forests, some of the most essential ecosystems in the world, house about forty to seventy-five percent all plants and animals globally. Unfortunately, the amount of biodiversity in forests is severely at risk due to the increasing deforestation over the past four decades. It is estimated in the biological community that approximately 50,000 species are completely wiped out annually as a result of arbitration, land clearance, logging, and other human techniques.Dry. Edward Wilson, a Harvard professor, predicts that half of all of earth's species could be extinct in about 50 years, unless the deforestation rate decreases. In 2011, Conservation International (also known as C') conducted a study of the top ten most endangered forests in the world (half of them located Asia-Pacific Region). Of the ten, the Indo-Burma forests were deemed the number one most endangered forest. Encompassing approximately 2,373,000 km, the forests spreads from eastern India to Southern china.The Indo- Burma forests are considered to be one of 34 ââ¬Å"biodiversity hotshots,â⬠a term coined y Norman Myers (a British biologist), which is a biographic landscape characterized by outstanding levels of habitat loss and plant endemics. Over ninety- five percent of the region's forests have been destroyed, which leaves only about five percent of the original forest area still standing; therefore, the Indo-Burma forests are the most vulnerable forests globally. The Indo-Burma forests are positioned in the midst of floodplains, lakes, and rivers.These various waterways give off life and prosperity, allowing richness in biodiversity as well as resources. This region is home oh number of the largest freshwater fish, bird, and turtle species. There is also, an assortment of ecosystems embodied in this hotshot, comprising of dry evergreen, wet evergreen, and deciduous forests. There are also several patches of woodlands and scrubbings on karts limestone ridges, some in costal lands as well as dispersed heath forests. Additionally, a broad range of distinct, restricted vegetation developments, including seasonally flooded grasslands, lowland floodplain swamps, and mangroves.This vast biological diversity is a result of topographical interaction, soil hegemonies, climate change, and seasonal rainfall patterns. The plant species are abundantly diverse with 13,500 vascular plants estimated with about half of them being endemic. The flora of forests range from a variety of ginger and orchids (over 1,000 different orchid species found in Thailand alone) to tropical hardwood trees including Disintegrations (teak) and Dipterous (which happens to be commercially valuable).The animal species are even more widespread as Indo-Burma is continually unmasking biological treasures. In the last twelve years, [the following] six age mammals have been discovered: The Salon, the Inanimate Mountain, the Large- Antlered Mountain, the Leaf Deer, the Gre y Swanked Doc, and the Inanimate Rabbit. There are approximately 430 mammal species residing in the region; over seventy species and seven types are endemic. Over 280 amphibian species are found in the hotshot, but there is not high level of endemics outside of the genus level.The region has noteworthy freshwater fish creatures; there are over 1,260 recognized species (about 10% of the world's total freshwater fish). There are more than 1,260 bird species with over 60 being endemic. The floodplain wetlands and the rivers are absolutely essential for bird species conservation since population numbers have declined due to human expansion and hunting. The reptile population is one of the more prevalent species of the region. Almost 520 species of reptile reside there which more than 200 species being endemic and twelve genera.This Indo-Burma hotshot carries perhaps the largest assortment of freshwater turtles globally; there are exactly 53 species (57 including tortoises), signifying 2 0% of the world's species. A popular species is the Chitchatted, a striped narrow-headed turtle with a soft-shell, which can grow up to about 120 centimeters. These species are decreases in number as well, mostly due to the overexploitation on behalf of wildlife trade. Of the 22 non- marine turtle species that are endangered, almost half of them are found in the Indo- Burma region.Other prominent reptiles include the Ellipsis butterfly lizard, the Chinese crocodile lizard, and the Siamese crocodile. Humans have greatly impacted life for the animals, however, and the overall environment. Indo-Burma was actually one of the primary lands used by humans in the development of agriculture; Hereford, fire has been used more and more over the years to clear out land needed to fit agricultural needs and other human demands. As demand for agricultural goods has skyrocketed over the past years due to population and market expansion, forest destruction became widespread.Huge areas of lowland fo rests soon became replaced with tree plantations (oil palm, teak, and rubber), while hill forests and Montana were threatened by sugarcane, coffee, tea, and vegetable crop plantations. In addition to plantations, forests become endangered by mining for ores and gems, firewood collection, charcoal production, and logging. The marine ecosystem simultaneously became under great pressure in many areas due to development. Draining for the cultivation of wet rice has damaged freshwater wetlands and floodplain swamps (mainly in Vietnam, Thailand, and Manner).The damming of rivers have also become way more prevalent in efforts to generate electricity and maximize water storage to support the economic growth of the country as well as for exportation of goods and services to bordering countries to increase foreign exchange income; regrettably, damming a river not only converts that small body of eater into a large pond, but it decreases the oxygen content and overall temperature, as well as i n amplifies water turbidity down the river and river-bed erosion.The operational measures of the reservoir has resulted in sporadic or frequent flooding of sandbanks, stretches of channel assortment, sandbars, and other territory that is generally uncovered during dry season [severely impacting turtle species and nesting birds]. Mangroves in the region have been transformed to aquaculture ponds, while mudflats have been comprehensively afforested with mangrove or shed by piles of nets, which greatly effects their significance as a feeding habitat for migrating birds and other specimen.Furthermore, ecosystems of sand dunes are in severe danger due to forestation, and overfeeding along with excessive use of [destructive] fishing methods have produced a considerable problem with both the offshore and coastal aquatic ecosystems. Being that only 5% of natural habitats are left in a pristine state and 10%-25% of damaged land due to habitat loss and exploitation of resources, something had to be done to decrease the probability of omelet extinction of the forests. In the Indo-Burma hotshot, protected area structures have become the foundation of government conservation program.There is officially 236,000 km of land protected, representing nearly ten percent of the original amount of vegetation in the region. Conversely, only 132,000 km (almost six percent) is in the International Union for the Conservation of Nature and Natural Resources (ICON) protected area categories one to four. Together, the countries of Lower Mekong (Thailand, Cambodia, Vietnam, and Ala P. D. R. ) have above 13 percent f their territory contained by an arrangement of protected areas.A fine approach to ensuring that the system of protected areas effectively preserves representative biodiversity is by securing the species that face the greatest danger of extinction globally. Endangered species worldwide are shielded best by targeting preservation investment to the sites in which they are prevalen t; these areas are known as ââ¬Å"key biodiversity areasâ⬠(Kbps). More efforts towards the conservation of the Indo-Burma forests are currently in the making and there are many organizations and individuals that are eager to contribute.
Thursday, August 29, 2019
12 Angry Men
12 Angry Men Essay Many movies start with promising premises that end up only partially fulfilled, but 12 Angry Men Essay never disappoints. The rich drama with minimalist sets occurs almost completely within the confines of a jury room. The incredibly strong ensemble cast for the jury includes: Henry Fonda, Lee J. Cobb, Ed Begley, E.G. Marshall, Jack Warden, Jack Klugman, Edward Binns, Joseph Sweeney, Martin Balsam, George Voskovec, John Fiedler and Robert Webber. To further minimize distractions, we never learn most of the jurors names. We know them by their opinions, backgrounds and weaknesses. They have their juror numbers, and that is considered sufficient labeling. As the story opens, a bored judge in a capital murder case is reading his charge to the jury. When he comes to the part about a reasonable doubt, he repeats it with such an emphasis that he seems to be suggesting that any doubt they may have in their minds about the defendants guilt is probably not reasonable. Indeed everyone, including the defendant, seems to think the case is hopeless. The accused, played with big, soulful eyes by John Savoca, never speaks, but his sunken, despondent demeanor says it all. The evidence in the case is clear, and as we find out later, his attorney apparently was pretty inept. Before the jurors start their deliberation, they idle away their time arguing over whether the case was dull or not and over how well the attorneys performed. If you didnt know better, you could assume they were reviewing some movie they had seen. None of them seems to be concerned in the least that the defendants life is at stake. Into this sure and certain world comes a voice of caution, someone who is willing to demand that the jurors put a halt to their headlong rush to judgment. This voice of reason comes from a juror played by Henry Fonda, giving a resolute and perfect performance that should have at least gotten him an Academy Award nomination for best actor, but didnt. Fondas character votes not guilty on the first ballot, not because hes sure the defendant is innocent, but because he wants to get his fellow jurors to stop and reconsider the merits of the case. The other jurors are aghast that he seems to have forgotten the sure and certain facts of the case that prove the defendants guilt. Now these are facts, barks an angry juror played by Lee J. Cobb. You cant refute facts. Everyone brings their differing lifestyles into the jury room. E.G. Marshall plays a prim and proper Wall Street stockbroker. He ticks off the facts in the case as if he were reading closing stock prices from the newspaper. His studious and ever-stern glare cuts down those who disagree with him. And he is the only one who keeps his coat on the entire time-he claims he never sweats, even in the stiflingly hot jury room. His bankers glasses, one of the films few props, turn out to be key to the cases solution. With superciliousness, he bemoans slum dwellers such as the defendant, only to find out that another juror, played by Jack Klugman, grew up in the slums and resents the brokers remarks. Although most jurors are known by the intensity of their convictions, Robert Webber plays someone who works in advertising and views serving on a jury no more seriously than he would concocting a laundry soap jingle. He tries using advertising lingo such as run this idea up the flagpole and see if anybody salutes it. After ridicule and scorn by his fellow jurors, Henry Fondas character suggests a startling compromise. He will abstain from the second ballot, and if they all vote guilty, so will he. But if he has garnered any support for the defendant, then the rest of the jurors have to agree to stay awhile and discuss the case with him. After he wins that round, one by one, the other jurors begin to fall in line behind him, but even if the conclusion is obvious, the way they get there constantly surprises and fascinates. The beauty of Roses script is that we come to know each of the jurors by the end of the deliberations. Most writers would gloss over some of them to concentrate on a few, but Rose gives each a unique personality and background. extroverted marmalade salesman, who made $27,000 last year and has tickets to tonights ball game burning in his pocket. He wants to vote .
A Little Cloud typical of Joyces maturity stories Essay Example for Free
ââ¬ËA Little Cloudââ¬â¢ typical of Joyceââ¬â¢s ââ¬Ëmaturityââ¬â¢ stories Essay ? Refer to themes, language and setting. ââ¬ËA Little Cloudââ¬â¢ is the first of the ââ¬Ëmaturityââ¬â¢ stories in Dubliners, preceded by ââ¬ËCounterpartsââ¬â¢, ââ¬ËClayââ¬â¢ and ââ¬ËA Painful Caseââ¬â¢. The story is archetypal of Joyceââ¬â¢s style and embraces all the key themes of, class, materialism, escapism and above all the paralysis and struggle of Ireland. The opinion that Ireland is a country lowly in comparison to the rest of Europe is enforced at the beginning of the story when Little Chandler says ââ¬Å"it was something to have a friend like [Gallaher]â⬠because he ââ¬Å"worked for the London press. â⬠The emphasis here is on ââ¬Å"the great city of Londonâ⬠and Little Chandler has immeasurable respect for Gallaher as he has escaped the paralysis of Ireland in favour of this thriving city. The environment Chandler lives in is lacklustre and uninspiring, his writing ââ¬Å"tiresomeâ⬠the nurses he sees are ââ¬Å"untidyâ⬠and the old men dozing on benches are ââ¬Å"decrepitâ⬠. When Little Chandler thinks of his situation in Dublin ââ¬Å"a gentle melancholy [takes] possession of himâ⬠which he feels ââ¬Å"[is] useless to struggle againstâ⬠. In ââ¬ËA Painful Caseââ¬â¢ a number of adjectives are used to convey the environment, such as ââ¬Å"disusedâ⬠, ââ¬Å"sombreâ⬠and ââ¬Å"shallowâ⬠. Joyce has subtly emphasised the burden of being a Dubliner and in particular the feeling of restriction which the characters are unwilling to challenge and from which they feel escape would be futile. There are recurring references to the colour brown (not just in the maturity stories) and Maria in ââ¬ËClayââ¬â¢ wears a brown raincoat, thus inadvertently resigning herself to the drab and motionless life of Dublin. Joyce contrasts two worlds in the story; the domestic, insular and paralysed Dublin with the fast-moving, energetic, cosmopolitan London and Europe. Little Chandler desires to belong to the wider, modern world and begins to despise his life with his family in Dublin. By juxtaposing Little Chandler with the successful, exuberant Gallaher, Joyce sets up an antithesis between the two worlds which they represent. The Act of Union of Great Britain and Ireland in 1800 abolished Irelandââ¬â¢s political centre, resulting in Dublin being a city in limbo, without a clear purpose and with a confused identity. This is evident throughout Dubliners, with inhabitants such as Little Chandler and Farrington all feeling trapped by the narrowness of Dublin life. There is a pervasive feeling that to be glamorous, like Ignatius Gallaher, one has to leave Ireland. Little Chandler believes London to be the key to his dreams and that ââ¬Å"if you wanted to succeed you had to go away. You could do nothing in Dublin.â⬠The attitude of Little Chandler to social class is indicated throughout. He encounters children in the slums of North Dublin as he passes on his way to meet his glamorous friend, Gallaher. The children are described as ââ¬Å"a hordeâ⬠, ââ¬Å"grimyâ⬠and populating the street and depicted as vermin who ââ¬Å"crawledâ⬠and ââ¬Å"squatted like miceâ⬠. Little Chandler, like Duffy in ââ¬ËA Painful Caseââ¬â¢ feels himself to be ââ¬Å"superior to the people whom he passedâ⬠, above the parochial, narrow interests of Dublin. He aspires to be a poet, loved by the more affluent English people. Chandler is shallow and materialistic, obsessed with appearance and class, excited about going to Corlessââ¬â¢s because ââ¬Å"he knew the value of the nameâ⬠and the ââ¬Å"richly dressed ladiesâ⬠caught his eye. Gallaher says if he ever married, his wife must have ââ¬Å"a good fat account at the bankâ⬠otherwise ââ¬Å"she wonââ¬â¢t do for meâ⬠. If he marries he intends ââ¬Å"to play [his] cards properlyâ⬠and secure one of the ââ¬Å"thousand of rich Germans and Jewsâ⬠. He dismisses the sacrament of marriage as just ââ¬Ëbusinessââ¬â¢ that could go ââ¬Ëstaleââ¬â¢, emphasising the immorality of London. The maturity stories all contain the presence of resentment in the main characters at the inevitable situation they have resigned themselves to living in. Joyce conveys Little Chandlerââ¬â¢s anger with a number of adjectives such as ââ¬Å"trembledâ⬠, ââ¬Å"burstâ⬠, ââ¬Å"convulsivelyâ⬠and ââ¬Å"a paroxysm of sobbingâ⬠. His cheeks later ââ¬Å"suffuseâ⬠with shame which gives way to ââ¬Å"tears of remorseâ⬠at his failure not only to fulfil his dreams but for the resentment he feels towards his family for thwarting his freedom. In ââ¬ËCounterpartsââ¬â¢ there is an established mood of anger with a ââ¬Å"bell rungâ⬠, ââ¬Å"a heavy stepâ⬠and Farringtonââ¬â¢s ââ¬Å"spasms of rageâ⬠. Joyce uses the symbol of the ââ¬Ëlittle cloudââ¬â¢ as an image of entrapment, not just hope; the little cloud of unhappiness hovering over his marriage to Annie, which restricts him from being the fun-loving bachelor like his idol Gallaher. Joyce incorporates the fantasy and captivation of exoticism and wealth in the ââ¬Ëdark Oriental eyesââ¬â¢ of the Rich Jewesses. Similar to fantasies of the East Joyce uses alcoholism as a method of ââ¬Ëescapeââ¬â¢ from the stifling lives of the Dubliners and this is particularly prominent in ââ¬ËA Little Cloudââ¬â¢. Gallaher states that he ââ¬Å"drinks [his whisky] neatâ⬠and that Little Chandler, who drinks very little ââ¬Å"doesnââ¬â¢t know whatââ¬â¢s good for [him]â⬠. Sobriety is here seen as the reason why Chandlerââ¬â¢s life is so ââ¬Ëinartisticââ¬â¢ and dreary in comparison to Gallaherââ¬â¢s. Ireland is belittled and viewed as an engaging absurdity by the English when Gallaher says ââ¬Å"theyââ¬â¢ve got a great feeling for Irelandâ⬠and the English ââ¬Å"were ready to eat [him]â⬠because he was Irish. Little Chandler ââ¬Å"wishes his name was more Irish-lookingâ⬠so as to endear the British with his book he dreams about publishing in London. This is ironic as Little Chandlerââ¬â¢s wishes to flee the restraints of Ireland yet feels dependant on his heritage. The story is highly symbolic of Irelandââ¬â¢s historical state; how the rest of Europe refuses to treat Ireland with respect symbolising Gallaher continually refusing Little Chandlerââ¬â¢s invitations to come for supper and to meet his family. Gallaherââ¬â¢s visit gives rise to an epiphany within Little Chandler, a feature Joyce includes in each of his stories, an anti climax when a character realises his escape to be defective. In the ââ¬Ëmaturityââ¬â¢ series it is through the characters own personality flaw they render themselves incapable of escaping the life they constantly bemoan. In ââ¬ËA Little Cloudââ¬â¢ Gallaherââ¬â¢s visit evokes ââ¬Å"a dull resentmentâ⬠within Little Chandler; he was ââ¬Å"useless, useless! A prisoner for lifeâ⬠and he feels acutely the injustice of his life is next to Gallaherââ¬â¢s. Little Chandler believes the only way of escape is if he publishes a book in London, but he cannot complete this because ââ¬Å"the wailing of the childâ⬠permanently permeates his ear. Little Chandler projects the resentment he feels at his lack of achievement in comparison to Gallaher, onto his wife and he is ââ¬Å"repelledâ⬠by her passionless eyes and fantasises of the ââ¬Å"dark Oriental eyesâ⬠of the Jewesses which Gallaher mentioned earlier in Corlessââ¬â¢s. Little Chandler begins to feel ââ¬Å"a little disillusionedâ⬠and ââ¬Å"Gallaherââ¬â¢s accent did not please himâ⬠. London, which Gallaher hitherto represents, is now seen as ââ¬Å"gaudyâ⬠and ââ¬Å"vulgarâ⬠imprinting itself upon his original ââ¬Å"old personal charmâ⬠and his ââ¬Å"vagrant and triumphant lifeâ⬠upsets the ââ¬Å"equipoise of [Chandlerââ¬â¢s] sensitive natureâ⬠. Little Chandler believes that Gallahers alleged friendliness to him is in fact patronisation just as ââ¬Å"he was patronising Ireland by his visitâ⬠. He has been too consumed with his own anger and resentment at his own entrapment and the failure of his own dreams, to see through Gallahers version of an exotic, successful life. In ââ¬ËA Painful Caseââ¬â¢ Duffy becomes disillusioned with escaping, when ââ¬Å"Mrs Sinico caught up his hand passionatelyâ⬠and similarly Little Chandler begins to wildly question ââ¬Å"Could [I] go to London?â⬠, ââ¬Å"[is] it too late?â⬠But Duffy bids his only distraction from the paralysis of Dublin Mrs Sinico, goodbye and is blatantly scared of commitment. The reunion with a conceited Gallaher reminds Little Chandler of what he hasnââ¬â¢t achieved and he feels resentment which he thus inflicts on those around him. ââ¬ËA Little Cloudââ¬â¢ is an evident example of Joyceââ¬â¢s maturity stories in keeping with the aspect that binds them together, the charactersââ¬â¢ comprehension that all endeavours to escape are fruitless. Little Chandler and Duffy lacked conviction and ignored the opportunity that was once given to them for escape, something they blame everyone but themselves for. The characters Joyce writes of do not appreciate what they have, mourning instead for what they do not. The Dubliners are, like the city, reluctant to change and yet are embittered by the injustice of their paralysed lives. Duffy does not appreciate until the death of Mrs Sinico, that he will never have a chance of marriage, or to love, through which he could have forgotten the monotony of the city he cannot escape. Congruously, Little Chandler dismisses his family throughout ââ¬ËA Little Cloudââ¬â¢ and when his personal epiphany dawns on him he realises his failure to his family, ââ¬Å"his cheeks suffuse with shameâ⬠and he cries with ââ¬Å"tears of remorseâ⬠as much out of guilt at the egocentric way he has behaved, as for his hopeless venture of escape. ââ¬ËA Little Cloudââ¬â¢ typical of Joyceââ¬â¢s ââ¬Ëmaturityââ¬â¢ stories. (2017, Aug 28).
Wednesday, August 28, 2019
American Hospital Assciation Research Paper Example | Topics and Well Written Essays - 1000 words
American Hospital Assciation - Research Paper Example lth of individuals and the community as a whole and hence lends support to hospitals and health care systems that work for the betterment of community health. The organization which initially began as an association for hospital superintendents and addressed the concerns of hospital administrators later on provided membership access to executive officers, associates and institutions. These inclusions resulted in a change of the organizationââ¬â¢s goal from simple interchange of ideas related to hospital management and economics to promoting efficient economic and hospital management. With the inclusion of institutional membership the objective was later extended to promote the health and welfare of the community at large, along with appropriate management of hospitals and dispensaries and to obtain the support and cooperation of hospitals and health care systems which had similar goals as the AHA. With these new objectives in place, the institution called for the development of outpatient services with emphasis on education and research. The revised mission in 1987 stressed on efficient leadership in public policies, advocacy and other services. Through its advocacy in courts and halls of the Congress the AHA has become the voice of hospitals and health care systems across the country. AHA is strongly advocating for the legal issues associated with healthcare and is laying emphasis on quality and accreditation of health care units keeping in mind the final goal of providing good quality health care to people. The achievements of the organization reflect its dual role in improving both hospital organization and public health. The AHA helped the establishment of the Blue cross and funding for the Commission on Hospital Care which in turn lead to the formation of the Hill-Burton programme. It also laid the foundation for the Medicare legislation which resulted in better access to healthcare facilities for the elderly. The AHA also established the House of Delegates
Comparing between the article and the theory Essay
Comparing between the article and the theory - Essay Example These countries include US, Denmark, Canada, Finland, Norway, Russia, Iceland and Sweden (Tromso par. 1). The Arctic region is rich with natural gases and oils. The countries in the Artic Council have cooperated in missions, which would be costly for nations to embark on their own (Tromso par. 6). Such missions include joint search and rescue missions, and scientific researches. This situation is described in the Realism topic from the article on the ââ¬ËTheoretical Foundations on Global Governanceââ¬â¢. According to the article, realists are entities, which act in a unitary manner to pursue their national interest. The various countries interested in the Arctic region can be termed as realists, since they have come together to form a union and a collaboration that will enrich their individual states. Tromsoââ¬â¢s article talks of other countries such as Singapore, Italy, Japan, India and China that want to hold crucial positions in the Arctic Council. Singapore especially has applied for a position as a permanent observer, yet it is situated at the Equator (Tromso par. 1). Additionally, fears are that the economic progress at Artic could result to an oil spill, which could pollute the Artic environment for years. This situation is comparable to the topic on collective or public goods theory from the article on the ââ¬ËTheoretical foundations of global governanceââ¬â¢. The collective or public goods theory is effectively described by the ââ¬Ëtragedy of the commonsââ¬â¢ by Garrett Hardin who talks of a faction of herders who share a common grazing area. The desire by the herders to increase their livestock led to depletion of the grass and eventually they all lost in the end. Conclusively, Tromso quotes some book titles such as ââ¬ËScramble for the Articââ¬â¢ and talks of the boundary conflicts between Canada and America over Beaufort Sea (Tromso par
Tuesday, August 27, 2019
Parliamentary Vs. Presidential Essay Example | Topics and Well Written Essays - 1000 words
Parliamentary Vs. Presidential - Essay Example The government can be dissolved at will by the parliament by means of a no confidence vote or the leader of the cabinet may dissolve the parliament if it is not able to function anymore. On the contrary, a presidential government is one in which the executive branch is not accountable to the legislative branch. Both branches can check the actions of the other branch. The President and the members of Congress are elected in separate elections. The President holds office for a fixed term and his authority is not subject to direct control of the legislature. However, the President cannot dissolve government and order a new election. Clearly, there is a difference in the voting system between a parliamentary government and a presidential government. The indefinite terms of office in a parliamentary system allows a party to hold office and thus are permanent in order to provide some stability to the system. However, it may be argued that this may lead to unfavorable type of ruling for a country. This is because the possibility of the head of government holding office for life contributes towards the making of an autocrat. Especially in nations with weak democratic traditions and with executive powers concentrated in the hands of the party in power, this type of system signals dictatorship. It also does not welcome new ideas or changes that could benefit the economy of a country in the long term. For instance, the former Prime Minister of Singapore, Lee Kuan Yew, from 1959 to 1990 recently commented the decision by the current Prime Minister to open a casino in Singapore would never happen under his control. However, he welcomed the changes as fresh and different. A divided executive is one in which the relative powers vary between a Prime Minister and a President, representing two different parties and ideologies. This is important in a system where there are no dual lines of authority. A divided executive results in varied institutional forms to allow
Smart Phones Essay Example | Topics and Well Written Essays - 250 words
Smart Phones - Essay Example Previous phones only had basic functions of calling, messaging and the use of the calculator. However, smart phones have the ability to visit internet pages and even make video phone calls. Another advantage of smart phones is the fact that it is convenient. The contemporary world is laden with different issues and having a smart phone is one very reputable thing. With a smart phone, looking for information on the internet is very simple and one has the ability to solve various issues instantaneously (Stafford, 2009). There are very many disadvantages with regard to smart phones and one of them is regarding the price of the gadgets (Chen, 2011). The price of normal mobile phones is very low but since the integration of smart phones, the prices have changed. The fact that these phones have many applications makes their prices higher than that of normal phones. Another disadvantage of the mobile phones is with regard to their sensitivity. Smart phones have the reputation of being very sensitive as compared to other normal mobile phones and this leads to their ease in breakage. It is critical to understand that despite the widespread positive regards for the smart phones, they are also very
Monday, August 26, 2019
Emergency Leave Assignment Example | Topics and Well Written Essays - 500 words
Emergency Leave - Assignment Example On the other hand, the HRD requires much formality through written documentations. Clarke will definitely feel bad because his request for leave was not granted. The HRD though, will feel that upper level manager is just following the policies of the hotel in denying the request of Clarke, through a memo addressed to him. Obviously, Clarke values family over work. More specifically, he is very much concerned with his grandmotherââ¬â¢s health that he is willing to sacrifice his work just to take care of her. The HRD values the strict implementation of company policies. After reading this message, one wants Clarke to realize that it is important that he gives importance to his work. It is also essential that he realizes that written requests for leaves is part of the policy of the hotel. Clarke must recognize that the hotel does not tolerate frequent absences. The HRD must think that the denial of the request for emergency leave is justified. The information that must be included for the secondary audience is the problem of Clarke about his sick grandmother. The HRD should also be informed that Clarke is frequently absent because of this problem. The most appropriate medium for both audiences is a memo addressed to Clarke, copy furnished the HRD. This will effectively document and convey to Clarke the denial of his request for leave and it will communicate the current situation of Clarke to the HRD. I received your voice mail message last (state date of message) requesting for an emergency leave for the upcoming holiday weekend. I fully understand that your grandmotherââ¬â¢s health is one of your priorities. Taking care of a loved one is a commendable virtue and I admire you for that. As you are fully aware of, there is a conference of electrical engineers this weekend at a nearby convention center and for the first time, our hotel will be host to its attendees. This is a welcome
Weekly ass. #1 Essay Example | Topics and Well Written Essays - 250 words
Weekly ass. #1 - Essay Example My experience of the storming phase was prominent in a class grouping of a minor subject. The group was comprised of students of different fields and had little similarities, as well as academic language. It took a great deal of quarreling before we got to perform the task assigned by the instructor. Most of todayââ¬â¢s workplace require the following soft skills: 1) proactive attitude, which was described as ââ¬Å"the disposition to say yes rather than noâ⬠and marked by a willingness to ââ¬Å"help and take action;â⬠2) problem solving, which is comprised of the problem-finding and the problem-shaping phases; 3) provide services, which is a service orientation based on consistency, sincerity, and mindfulness; 4) teamwork, which is the ââ¬Å"ability to be friendly and work with others in structured groups;â⬠and 5) communication skills, which is characterized by the effectivity and efficiency in conveying ââ¬Å"ideas and informationâ⬠(Tarnogol, 2010). The significance of possessing such skills becomes evident in the interaction with or between ââ¬Å"difficult peopleâ⬠(Rao, 2010, p.
Forensic Science 2.2 Essay Example | Topics and Well Written Essays - 500 words
Forensic Science 2.2 - Essay Example Moreover, the victimââ¬â¢s car was also stolen and found dumped in the state of Illinois. The investigators collected some more latent prints from the car but however no more leads could be discovered related to the crime scene. These fingerprint evidences were searched against finger print files of local and state fingerprints but no matches were found and the case went dead. However, as the name of the article states the upgrade to better technological facility played a bigger role in solving this crime. In late 2008, the case was reopened due to an inquiry made in the ââ¬ËOmaha Police Departmentââ¬â¢. The latent prints were again searched against fingerprints of perpetrators but this time a new technology was used that didnââ¬â¢t exist in 1978 known as ââ¬ËThe ââ¬ËFBIââ¬â¢s Integrated Automated Fingerprint Identification System (IAFIS)ââ¬â¢ it consists of known records of around seventy three million criminal subjects. The IAFIS concluded possible suspects in even less than five hours and after thorough identification over a period of several days a suspect was positively identified. Another FBI official working with laboratory personnelââ¬â¢s and analysts reviewed all the original evidences collected and also possible background data on the suspect and it was found that the suspect lived only a little farther from where the car of the victim was dumped and the suspects name was found on a classified advertisement which was found in the victimââ¬â¢s apartment. Upon these discoveries the FBI ordered the suspect, who was already in prison for burglary charges, to take a DNA test and as hoped the DNA was a perfect match with the DNA recovered from the place where the crime was committed. The DNA combined with the identified finger prints lead to the suspect being convicted for murder and life long sentence in prison. (Federal Bureau of Investigation 2012). Since this was such a prolonged case a well-documented course of
BPA fetal exposures affect male and female development and quality of Research Paper
BPA fetal exposures affect male and female development and quality of life as adults - Research Paper Example In essence, early exposure to BPA, as well as other chemicals, especially in the foetal stage signifies an increase in the risk of disease later in life. This paper will examine the impact of BPA in adults following foetal exposure. Health Concerns Some of the risks involved with foetal exposure to BPA include increased risk for prostate cancer in adult men and breast cancer in both women (Okada et al 32). In addition, foetal exposure to BPA results in adverse metabolic changes, early onset of puberty and decreased fertility. Furthermore, immunological changes are also a major consequence of foetal exposure to BPA (Rubin 30). Whenever foetal exposure to BPA occurs, the chemical infiltrates the body in an active fashion. BPA binds to the bodyââ¬â¢s oestrogen receptors replicating the functions of oestrogen. Furthermore, in both male and female adults, BPA causes adverse reproductive effects, particularly in populations exposed to BPA due to their occupations. During the initial 11 weeks of gestation, which is a time when most pregnant women are unaware of their pregnancy, the internal communication systems, and organs of the foetus develop quite rapidly, thus are extremely sensitive to external pressures. Organs such as the brain and mammary glands develop during gestation, thus experience a prolonged period of vulnerability to the effects of BPA, especially since foetal development of such organs is susceptible to oestrogen fluctuations. Additionally, in certain instances, BPA has been shown to cause obesity. When BPA binds to oestrogen receptors in the human body, it causes alternative estrogenic effects, which start outside the nucleus. The alternate path caused by BPA ultimately alters lipid and glucose metabolism, resulting in weight gain (Rubin 31). This is primarily since the alternative oestrogen receptors trigger pathways that result from exposure to BPA to rework the functions of vital components that play a significant role in metabolism, for insta nce, adiposities and pancreatic B cells. In a recent study, it was confirmed that foetal exposure to BPA has the capacity to potentiate the systems inherent in the central dopaminergy. This is bound to result in marked super sensitivity to the drugs linked to abuse-induced reward implications. In essence, by affecting mesolimbic dopamine activity, BPA causes adverse effects such as attention deficits, hypersensitivity and an increased sensitivity to drugs linked to abuse. Furthermore, BPA is also known to bind to receptors of the thyroid hormone, and possibly cause certain side effects on its functions. For instance, BPA impacts triiodothyronine in adults following exposure to the chemical during the prenatal development phase (Rubin 33). Researchers now consider that there are actually two ways through which BPA interrupts the regular endocrine function (Okada et al 32). The compound can perform as a weak estrogen, which binds to the estrogen receptor. It also can, on the other han d, impede the impact of stronger natural estrogens, restraining estrogen function. They are usually considered performing in the cell nucleus via the estrogen receptors, which control gene expression. Many other ways of BPA action are considered to be related to its biological
Sunday, August 25, 2019
Summary of Molecule bonds, Amino and Nucleic Acids, Proteins Assignment
Summary of Molecule bonds, Amino and Nucleic Acids, Proteins - Assignment Example More generally, bonds may be intermolecular (between atoms in different molecules) or intra molecular (atom to atom bonds within the same molecule). Different theories (such as valence theory and molecular orbital theory) have been used to describe chemical bonds. They are viewed as being complementary with each theory best explaining certain aspects of the bonds. The use of these theories has led to the creation of different molecules through the various bonding processes. Additionally, there are means to visualize the bonding. One of the most popular bonding diagrams is the Lewis Dot Style. In this type of diagram, the chemical symbol of the atom is drawn with up to eight electrons drawn around it as dots (two on each side, top, and bottom). Bonds are displayed according to the arrangement of electrons being shared or attracted. 2. Amino and Nucleic Acids Amino acids are a class of chemicals that contain both an amine and a carboxyl (or carboxylic acid) group. All amino acids follo w a general chemical formula of H2NCHRCOOH, where ââ¬Å"Râ⬠is used as a variable to refer to one of many possible side groups. These groups can be as small as one molecule but can also grow quite large. The name and functional of amino acids are closely related to the side group. Accordingly, an alternate name for the side group is functional group. All proteins are made from a chain of amino acids. The number of amino acids contained in the protein, as well as their order, is specific to that protein and results in the proteinââ¬â¢s shape. A group of twenty amino acids are drawn from to make up all the proteins of the body. Along with amino acids, nucleic acids are a type of large molecule (macromolecule) that is extremely important for life to occur. All nucleic acids are made up of smaller structures called nucleotides (molecules with a nitrogen base, phosphate group, and a sugar group containing five carbons). The sequence of nucleotides will determine the type of nucl eic acid that is formed. Two of the most essential types of nucleic acids (as related to life) are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). These structures are responsible for containing and transcribing genetic information. This information is then used to instruct many processes within the body, including the construction of proteins. Amino and nucleic acids are robust in living creatures. Together they enable the transport, encoding, decoding, and execution of genetic processes. Certain kinds of each compound can be synthesized in the laboratory for research and various treatment purposes (both potential and realized). 3. Proteins Amino acids can form long chains known as polypeptides (partially named for the peptide bond that forms between amino acids) that can become proteins on their own or in combination with other polypeptides. Proteins are found in muscle and therefore the meat of many animals. These large molecules fill many important roles in the body, inc luding strengthening bones, acting as hormones, cellular structure, and as important participants in cellular signaling. Protein is an important part of the animal diet, as it is broken down and used to form other compounds such as the amino acids that make other proteins. Some
KIPP National Case Study Example | Topics and Well Written Essays - 750 words
KIPP National - Case Study Example The founders have the drive and passion to give children of lower income families the skills to make it through college. This passion and skill has shown success. From the very beginning the founders worked for months trying to establish the right to operate as a school. This took months of waiting from the district to approve the original proposal made by the founders. Once approval was accepted the founders were able to begin recruiting students and convincing parents that their new school would greatly help their child academically. Over the next months the founders were able to recruit enough students to get the KIPP School started. The founders had many promises to live up to and this helped guide the success as they did not want to let parents and their children down. Having enrollment grow each school year proved that what the founders created a school that was turning out to be successful. Students were excelling at a terrific rate and the option for expansion was taken witho ut hesitation. Scores were improving and the students showed the willingness to want to succeed. The growth to New York showed that KIPP Schools were not holding back and were focused on helping kids who otherwise would not have a chance in a normal school environment. There are many elements in the KIPP operational model that set KIPP apart from other schools. ... Structure and not allowing any slack in commitment makes for KIPPââ¬â¢s successful operational model and sets them apart from the rest. 2) Should the KIPP schools be replicated? Can they be? What are the major challenges KIPP will face as it expands? The KIPP schools are mainly successful because of the hard work and determination put forth by the two original founders. The two original founders make sure that teachers, parents and students are focusing and functioning how they originally promised. Replicating this type of structure and discipline would be hard to replicate. The schools would be hard to replicate because the two founders would need to make sure they have teachers that are willing to give their all like the founders have. Many examples throughout the case refer to why it was important for the founders to lead the schools in the direction they are going in. Expansion can be done but it is likely that expansion will take away from the success that the two original sc hools already have. Expanding is one thing and can be achieved by funding and hard work. Expanding and being successful is another issue. One can expand but what is the point if the expansion is not going to be successful. By reviewing the case it is obvious that success was determined on the founderââ¬â¢s hard work. Two people alone cannot be at several locations at once to make sure teachers are acting how they need to be and students are living up to their agreements. If the founders are out taking on several new ventures the two original schools will lose leadership by the founders and can slowly become unsuccessful unless proper leadership is put in place. It is obvious that
Saturday, August 24, 2019
A 2-3 page, double-spaced statement of purpose that describes your Essay
A 2-3 page, double-spaced statement of purpose that describes your background, reasons for applying to this graduate program, and your educational and career goals - Essay Example onditions of the living standard depend upon various economic measures taken by an individual and market as a whole, thus I opted for Economics in my Bachelor level education. My enthusiasm for learning more about Economics developed because of the intellectual family environment I was part of. My father was always open for discussions which encouraged me to be inquisitive about global happenings around the world. It was because of my father; I felt my opinions in the field, had a value associated with the real world. I also had the opportunity to meet two well known politicians which promoted my interest in the field of Economics and enhanced my understanding about how politicians or government can have an impact on the economic conditions of a country. My concern with global issues increased when I studied in US as well as in China. At this time, economic growth of China is the most interesting global issue for me. I realize that although China is the fastest growing economy in the world, issues related to wages and labor working standard have started to emerge. In the Masters program, I would like to further explore such questions: Is Chinaââ¬â¢s undervalued currency good for its domestic economy? How should China maintain its economic growth in the long run? What are the economic policies, China should learn from the U.S. for its further development? I believe that while my Masters program will equip me with sufficient knowledge to answer these questions, my educational background in Econometrics will enhance my capabilities of learning with quantitative analysis skills such as regression model and time-series model. This skill has guided me through casual effects and hypotheses analysis. With this knowledge, I wish to gain a hands-on experience in policy analysis and make a difference in safeguarding developing countriesââ¬â¢ economic development through research. My passion for the subject is not only related to the content of the subject but also my input
Indian religion Essay Example | Topics and Well Written Essays - 250 words
Indian religion - Essay Example Especially the Indian women always try to preserve their practice in a pure Indian traditional way. Indian women have very important role in maintain puja which Hindus name it as Dharma (University of California). In Indian religion Rajput women are famous when it is about regular religious practices especially ââ¬Å"home pujaâ⬠. Rajput women main objective is to become a good wife, a wife which is protector of her husband, as this is one major religious consideration which Indian women maintain specifically. In Indian religion especially in Hinduism women maintain entail fasting, which is to gain Shivââ¬â¢s blessing. This is weekly activity which unmarried women perform to attain a holy partner under the blessing of Shiv. This is also maintained by married women to serve their husbands in pious manner. A special fasting is maintained on Monday, which is an important religious day in Hinduism consideration (University of California). University of California. "Religion and Protection." 2004. www.publishing.cdlib.org. 26 September 2012
Friday, August 23, 2019
GUN CONTROL Research Paper Example | Topics and Well Written Essays - 1000 words
GUN CONTROL - Research Paper Example It was only last year that over twenty students in the US were brutally murdered by an unknown assailant who used a gun to spray bullets unto innocent people. This has therefore necessitated the immediate curtailing of this unlawful act. Moreover, the world today is under high alert of terrorist attacks through which the use of guns is part and parcel. Conventions and international conferences have in the past been convened to look into this matter in the international arena and strategic decisions made over the issue. However, though countries are in record of designing legislations as well as policies meant to control the use of gun, implementation has been seen to be failing. This is because the ease of movement of goods as well as information has greatly changed within the era of technological advancement and globalization. This paper therefore intends to analyze on some strategic steps that have been made in the past concerning this issue, their success as well as their failure and in conclusion recommend on some realistic steps that would adopted for the sake of success in this fight. The US has noted high number of debates as regards the ease of possession of guns as against total curtail of the same to general public but only to the security personnel. However, majority have been found to debate on the lineage of the political affiliation with these alienations more on democrats as well as the republican. With reason, some support the legislation formulation to allow the acquisition and sale of guns to the public though at monitored public showrooms through which sold guns can be tracked. They equally support the ban of sale to persons with questionable mental capabilities for the case of insanity. Nevertheless, the great concern is to how the evaluation of sanity is to be conducted. On the other hand, some people are of the opinion of absolute control of possession of guns by the public and as such support the possession of guns by only security agents . With majority of the US citizens owning guns, activism has slowly changed from the issues of gun control to the protection of gun rights. This is as revealed by a recent survey in the entire of the US (Dimock and Doherty, 2013, 1-6). The US has been seen to be very vocal on the issue of regulating guns within the states especially following the last yearââ¬â¢s mass killings by an unknown assailant in a cinema. According to a white house release, the president is in support of imposition of background checks on sale of guns in efforts to curb the availability of guns within the wrong hands. The proposition is for a centralized system through which the government will be in opposition to regulate the flow of guns within the citizens of the States. As per the report, by controlling the availability of military assaults within the market would go a long way in controlling crime with the semi automatic and other high range ammunition gadgets within the states. Moreover, the presiden t reveals commitment for his governance to oversee the proper provision of mental care for the public for the purpose if maintaining sanity which has also been seen to contribute immensely towards the criminal activities involving guns (Anon, 2013, 2-13). In a rather supportive move towards this ban of existence of guns of
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