Argentine Market Essay Example for Free

Argentine Market Essay The current status of the Argentine Market has remained open to foreign investments. The Argentine market offers a wide array of opportunities which serve as a great factor for attracting American and other foreign investors to invest (â€Å"Argentina,† 2007). To invest in the Argentine market, foreign business entities must always be keen the position held by Argentine economists and business people in entering into partnerships with foreign corporations. The government of Argentina, along with the local business entities within the country, has always been protective of the economic status of the Argentine market. As such, in order to enter the Argentine market and to be able to convince local business entities in forging business partnerships, foreign corporations must realize the need to stress the advantage which can be gained by local Argentine corporations. One of the most important concerns that are to be taken into account is the Argentine government’s policies for protecting its economy. Over the past years, the government of Argentina has worked hard enough to ensure the stability of the Argentine peso as against the United States currency. This move was made to protect local corporations against hyperinflation. In addition to this, the government has also adopted an intensive market-based policies which opened its economy towards a more comprehensive and competitive market (â€Å"Argentina,† 2007). On the other hand, aside from economic concerns, foreign business entities must also become aware of the cultural and social aspects that are inherent to the Argentine market. In order to successfully penetrate the Argentine market, local producers and consumers as the primary actors in the economy must be regarded with great importance in making deals in the Argentine market. A brief example of taking into consideration the social and cultural aspects of the Argentine market is the strategy employed by Walt Disney in venturing in the Latin American market. In entering the Latin American market, the Walt Disney Company penetrated the Latin American audience by understanding the people through their culture. As such, Disney produced stories and movies that are relevant to the Latin American culture and those which reflected the lives of the Latin American people (â€Å"Disney Latin America,† n. d). In general, to be able to capture the consumers in the Argentine market, it is important for foreign business enterprises to forge contacts with local entrepreneurs which can briefly guide foreigners in handling local issues and to be able to know the relevant details necessary to understand the culture and needs of the local consumers in Argentina. 2. Identify two of Argentina’s most successful companies and provide an explanation for their successes. Compare and contrast the strategies of those two organizations (and with a US company if you wish). Two of the most prominent and successful companies in Argentina are Razzani – Vera S. A and the Comidas Gaucho. Both companies are locally owned and operated and at the same time, both were able to sustain the growth of the company with very minimal help from foreign entities until such a given time. Razzani – Vera S. A was an Argentine company founded in 1952 by an Italian immigrant, initially as a supplier of candies and cigarette product into â€Å"kiosks. † After several years of operation, the company consistently grew and the need for reinvestment and expansion became more attainable. Since the inception of the company in 1952, the owners and partners of Razzani – Vera S. A operated independently. Instead of accepting assistance from banks and other companies which viewed Razzani as potential clients and partners, Razzani stood independently, refusing offers for financial assistance. In 1994, under new management, Razzani remained to adhere to the company’s old policies thus avoiding incurring scarce debts. In this way, Razzani was able to successfully grow and maintain the business with a good credit reputation which allowed satisfactory collection for the company (â€Å"Razzani – Vera S. A,† n. d). However, in 1996 at the new changes in the company’s management, the new management resorted to more aggressive plan. In order to administer the new plans set forth by the new management and to fund technology investments, the company availed of mortgage loans from the United States (â€Å"Razzani – Vera S. A,† n. d). Alongside the growth of investments in the company, a deficit was also experienced by the new management. However, Razzani – Vera S. A was still able to cope with such difficulties and were able to procure an alternative solution to strengthen the company’s business. On the other hand, Comidas Gaucho is a local beef processor in Argentina. Comidas Gaucho operated the same way as the start of the Razzani – Vera S. A. Comidas Gaucho opted to run its business with the least intervention and aid possible from foreign entities. The company also showed its reluctance to let foreign enterprise penetrate their business by making ties and alliances. Gaucho’s decline in the offer by American company Great Plains Food as a business partner is an indication that Gaucho rather chose to operate independent from foreign firms (Rarick, n. d). Despite Comidas Gaucho’s refusal to make partnership with the American company Great Plains Food, nonetheless Gaucho was able to maintain the stability of its business by adhering to the old customs and policies that were inherent to the corporation. 3. What are the challenges facing private firms in Argentina? Are there any advantages for private firms in Argentina? What are the advantages/disadvantages for state-owned firms in Argentina? The Argentine market offers a vast set of opportunities both for foreign and local business enterprises. However, in order for foreign corporations to make successful business launch in Argentina, there are certain factors that should be given ample consideration by entrepreneurs. One of the most important things that foreign businessmen should do before investing in Argentina is to study the historical background of the Argentine government and market which is essential in determining matters that are crucial to the people in Argentina. One of the challenges that will be encountered by foreign investors wishing to enter the Argentine market is to penetrate the laws and policies set forth by the government. Dating back from the earlier years, the Argentine government has always been protective of its local economy (Di Tella and Vogel, 2004). Thus in order to penetrate the Argentine market, foreign investors must provide the government, local entrepreneurs and consumers opportunity for growth and a glance to the possible benefits that can be attained from foreign partnerships. In addition to Argentina’s political background, foreign investors must also be keen in understanding the culture innate with the people in Argentina. For investors to be able to gain the trust of the consumers, they must cope with the customs, beliefs and experiences that are of great importance to the people. Though these factors provide tough challenges for foreign investors, once the Argentine market is penetrated, there are numerous opportunities open to be tapped and developed that are beneficial not only to investors, but as well as the consumers. In Argentina, investors can penetrate various business aspects including franchising, security services, specialized services, legal services, transportation, aviation, education and training, engineering and architectural fields, finance, insurance, healthcare and the tourism services. Within these fields, there is a vast room for development which can greatly benefit consumers and local and foreign business entities. However, although foreign involvement in the Argentine business sector may be greatly advantageous to the country’s economy, state-owned business enterprises also hava advantages. State control over business corporations can standardize business process thus eliminating excessive competition among various privately owned business entities. This in turn may provide the people and the market with vast opportunity for improvement. However, on the disadvantage, in state-owned and controlled corporations, the state will shoulder the entire expenses needed to finance development and growth projects in order to maintain the stability of the company (Hill, 2007, p. 493). Failure to provide the financial needs of the company, the state may resort in acquiring debts from international organizations. And in such cases, the government may reach the point of dependency towards in international financial institutions, which in the long run may become detrimental to the growth of the company and the country as well. 4. What are the mechanisms for foreign investment in Argentina? Is there an ideal strategy for foreign investment there? During the past years, foreign investment has always remained open in Argentina. As such, the growth in Argentina’s Gross Domestic Product in the past years can be attributed to foreign investments made with the Argentine market. In the old Argentine decree governing the market and economic policies of Argentina, foreign investors have been made to enter the Argentine market freely with fewer restrictions imposed. In addition to this, foreign and local investors were provided with equal rights in establishing independent businesses and equal rights in the acquisition of new business enterprises (â€Å"Argentina,† 2007). However, changes in the policies implemented in Argentina provided more restrictions which resulted to a decrease in foreign investment. One of the changes enacted was in June 2003 when the government of Argentina passed a legislation which limited foreign business enterprises from owning â€Å"cultural goods. † These â€Å"cultural goods† included the media sector and Internet providers (â€Å"Argentina,† 2007). Nonetheless, despite these controls that were set by the government, deregulation in the economy and privatization boosted the foreign investment in Argentina (â€Å"Australia – Argentina Relations,† 2008). The vast richness of raw opportunities waiting to be tapped was the attraction of foreign entrepreneurs in investing in Argentina. The prospect of diversification lured most of investors to penetrate Latin American countries, Argentina in particular. In addition, market inefficiencies during past Argentine governments became an asset rather than a liability to the Argentine market. These market inefficiencies practiced by previous governments was seen as raw resources waiting to be tapped and developed (Deal and Rosso, 2001). Nearly during the last two decades, alongside the changes made by the government in Argentina’s trade and import policies, the Argentine market made a significant improvement in reducing economic barriers. New trade policies were able to decrease confusion for foreign investors, which resulted to an increase in foreign investments. In particular, during 2003 import exchange controls were abolished and restrictions on certain aspects of foreign trade were removed. Such actions helped in stabilizing the Argentine currency and kept it in pace with other foreign currencies (â€Å"Argentina: Foreign Trade Barriers,† 2004). However, there are no such things as â€Å"ideal† in foreign investment. To become successful in venturing in foreign investments, it is only essential to know the necessary details and the factors inherent within the local economic arena. It is important that both foreign and local business entities are adept in understanding market behavior and learn how to adopt in the society and culture of the consumers involved. 5. What challenges would Argentine firms likely face when attempting to build brands at home (or abroad)? What challenges will overseas firms face when trying to build brands for the Argentine market? In every business enterprise, there are different challenges that are inevitable to foreign and domestic business investors. In the international arena, the competition among different emerging markets is innate and necessary. In order to expand businesses and firms, tough competition must be faced and surpassed (Grosse, 2003, pp. 2-4). In a globalized competition, market expansion is always a step taken by emerging countries. However, success in expanding the market is dependent on certain factors. First, the type of industry that is pushed for expansion should be relevant and in demand for most countries. Second, the country itself is important in determining the success of market expansions. For example, more developed and powerful countries are more likely to succeed in expanding their market towards less developed countries compared to the possibility that smaller and less able countries will be successful in competitively expand their market towards other foreign territories. Third, the target market for expansion is also relevant in assessing the necessity for expansion (Grosse, 2003, p. 3). Argentina, being a rather less powerful country in the international arena is more likely to have difficulties in penetrating foreign markets. There are more technologically advanced service providers and producers that are more competitive than Argentina, coupled with the reality that politics is an integral factor in gaining an upper hand in the economic playing field. However, in terms of building branches locally, Argentina will relatively gain an advantage as compared to foreign investors entering the Argentine market. Given the distinct economic, political and social background of Argentina, local consumers will become rather more comfortable and enthusiastic to patronize the brands that they have been accustomed with. In addition, Argentine enterprises are more focused on retail sales and small to middle enterprises which people in Argentina can afford better. Thus, Argentine business enterprises can be more successful in building local branches rather than penetrating foreign markets. On the other hand, for foreign investors wishing to enter the Argentine market, same challenges will apply. The social and cultural background of the Argentinean consumers will serve as distinct barriers in entering the Argentine market. Although in the past years, foreign investments in Argentina have been successful, it will still be relatively harder for foreign entities to penetrate the Argentine market as long as there are still local small enterprises that can cater better to the needs of the local consumer more affordably. In addition, local enterprises can better cope to the cultural needs and preferences of local consumers. References Argentina. (2007). U. S Department of State. Retrieved August 27, 2008, from http://www. state. gov/e/eeb/ifd/2007/80675. htm Argentina: Foreign Trade Barriers. (2004). Office of the United States Trade Representative. Retrieved August 28, 2008, from ustr. gov/assets/ /2004_NTE_Report/asset_upload_file568_4735. pdf Australia – Argentina Relations. (2008). Australian Government: Department of Foreign Affairs and Trade. Retrieved August 28, 2008, from http://www. dfat. gov. au/geo/argentina/argentina_country_brief. html Deal, M. and Rosso, C. (2001). Foreign Investment in Latin America Real Estate. (Diss. ) Massachusetts Institute of Technology. Di Tella, R. and Vogel I. (2004). The Argentine Paradox, Economic Growth and the Populist Tradition. Harvard Business School. Disney Latin America. (n. d). Escuela de Direccion Negocios. Grosse, R. (2003). The Challenges of Globalization for Emerging Market Firms. Latin American Business Review. Vol 4 (4) 2003. Hill, C. W. L. (2007). International business (6th ed. ). New York

A Major Application Area Of Thermodynamics Engineering Essay

A Major Application Area Of Thermodynamics Engineering Essay A major application area of thermodynamics is refrigeration, which is the transfer of heat from lower temperature region to a higher temperature one. The devices that produce refrigeration are called refrigerators, and the cycles on which they operate are called refrigeration cycles. The most frequently used refrigeration cycle is a vapour-compression refrigeration cycle in which the refrigerant is vaporized and compressed alternatively and is compressed in the vapour phase. There are number of refrigerants which can be used in here, but the most commonly used on a commercial scale is a R12 (used in this experiment as well). The thermodynamics of ideal vapour compression cycle can be analyzed on a temperature versus entropy diagram as depicted in Figure 1. At point 1 in the diagram, the circulating refrigerant en- ters the compressor as a saturated vapour. From point 1 to point 2, the vapour is isentropically compressed (i.e., compressed at constant entropy) and exits the compressor as a superheated va- pour. From point 2 to point 3, the superheated vapour travels through part of the condenser which removes the superheat by cooling the vapour. Between point 3 and point 4, the vapour travels through the remainder of the condenser and is condensed into a saturated liquid. The condensation process occurs at essentially constant pressure. Between points 4 and 5, the saturated liquid refrigerant passes through the expansion valve (throttling device) and undergoes an abrupt decrease of pressure. This process results in the adia- batic flash evaporation and auto-refrigeration of a portion of the liquid (typically, less than half of the liquid flashes). The adiabatic flash evaporation process is isenthalpic (i.e., occurs at con- stant enthalpy). Figure 12 Temperature Entropy diagram 1 www. wikipedia.org/wiki/Refrigeration 2 http://upload.wikimedia.org/wikipedia/commons/f/f7/RefrigerationTS.png UMAR DARAZ Page 3 of 22 Thermodynamics Lab 2 Between points 5 and 1, the cold and partially vaporized refrigerant travels through the coil or tubes in the evaporator where it is totally vaporized by the warm air (from the space being refrigerated) that a fan circulates across the coil or tubes in the evaporator. The evaporator operates at essentially constant pressure. The resulting saturated refrigerant vapour returns to the compressor inlet at point 1 to complete the thermodynamic cycle. The area under the process curve on T-s diagram represents the heat transfer for internally reversible processes. The area under the process curve 5-1 represents the heat absorption in the evaporator, the area under the process 2- 4 represents the heat rejection in the condenser. In the ideal vapour compression refrigeration cycle all the heat losses and disruptions are being ignored, but in actual refrigeration cycle, we need to take these losses into consideration as they have been mentioned in this report later. The Hilton refrigeration laboratory unit R714 is capable of following entities;  · Investigation of the variation in refrigerator duty or cooling ability for various condens- ing temperature and the heat delivered to the cooling water with variation in condensing temperature. We can also investigate the variation in refrigeration coefficient of per- formance for the various condensing temperature.  · Investigation of the variation in coefficient of performance based on electrical, shaft and indicated power, determination of the overall heat transfer coefficient for the condenser cooling coil and performance of the thermostatic expansion valve.  · Investigation of the heat delivered to the cooling water with variation in condensing tem- perature, coefficient of performance as a heat pump for various condensing temperature, as well as power input based on electrical, shaft and indicated power. The important aspect of this report is to demonstrate the two laws of thermodynamics i.e. first and second law of thermodynamics. The first law is simply an expression of the conservation of energy principle, and it asserts that energy is thermodynamic property. Qout = Wnet + Qin Equation (1) In this experiment the Qin is provided by input voltage, this input is used to do the net work done on the refrigerant by compressor and motor, and the result of this produces the heat which is being removed by the condenser i.e. Qout. The second law of thermodynamics asserts that energy has quality and quantity, and actual processes occur in the direction of decreasing quality of energy. UMAR DARAZ Page 4 of 22 Thermodynamics Lab 2 Aims and objectives: The Hilton refrigeration laboratory unit R712 has been designed to allow students to fully investigate the performance of a vapour compression cycle under various conditions of evaporator load and condenser pressure. The main objectives of this laboratory are listed below;  · The demonstration of application of the First and second law of thermodynamics.  · The introduction of to refrigeration plant and calculate the various coefficient of perform- ance.  · Investigation of system losses, this includes motor, compressor, evaporator and con- denser losses. These losses (friction, heat losses) occur only in practical/commercial refrigerator, there are no losses in ideal vapour compressor refrigerator. UMAR DARAZ Page 5 of 22 Thermodynamics Lab 2 Apparatus The figure shown below looks like a refrigeration laboratory unit R712 (not exactly it) and it consists of the following components; Figure 23 Refrigeration laboratory unit Panel: High quality glass reinforced plastic on which the following components are mounted. Refrigerant: R12 Digital Thermometer: A device that measures temperature. Wattmeter: Allows measurement of the power input to either evaporator or motor. Voltage Controller: To vary evaporator load. Variable Area Flow meters: Variable area types to indicator R12 and H2O flow rates. Pressure Gauges: To indicate R12 pressure in evaporator and condenser. Spring Balance and Tachometer: These two together allow measurement of power required to drive the compressor. Expansion Valve: Thermostatically controlled type i.e. throttling device. Evaporator: Electrically heated device i.e. heat exchanger Compressor: (Internally mounted) Twin cylinder belt driven unit, along with spring balance force system. Condenser: A device or unit used to condense vapor into liquid. It is also called heat exchanger. Motor: A machine that converts electricity into a mechanical motion. 3 www.p-a-hilton.co.uk/English/Products/ Refrigeration__2_/refrigeration__2_.html UMAR DARAZ Page 6 of 22 Thermodynamics Lab 2 Procedure4 In prior performing an experiment the most important things to do are, to measure the atmos- pheric pressure, which would be added to the gauge pressure to get an absolute pressure for both condenser and evaporator, and to balance the two tips of the spring balance force, being applied on the compressor. In failure to do these things would cause a sufficient amount of error in the final results. In this experiment the condenser pressure is being kept constant i.e. 900KPa. Step-1 Turn on the refrigeration plant using one of the control breakers, and setting the evaporator voltage i.e. 40 100 volts, at the same time balancing the two tips of compressor load and set the condenser pressure to 900KPa, using rota-meter. Step-2 Record the following values; Evaporator Amps (1-2.42A), from wattmeter, compressor speed using tachometer, water and refrigerant flow rate using flow meter. Step-3 Record the spring balance force, reading directly from the scale. The hot water is in the tubes is indicated by red and cold water is indicated by blue sign in the refrigeration plant. Step-4 The flow rate is controlled by a throttling device (valve), the small changes in opening and closing the valve, effect the condenser pressure. Step-5 The temperature values of the refrigerant at different stages in the whole cycle at constant pressure is given by temperature dialler. Now we had all the values we needed, now we changed evaporator Amps value, recorded rest of the values as mentioned earlier and repeated the whole experiment for three to four times. The Refrigeration Laboratory Unit has three controls. Firstly a combined miniature circuit breaker and switch turns on both the compressor motor and the supply to the electrically heated evaporator. A combined variable area water flow meter and valve allow control of the condenser pressure and a panel mounted voltage controller allows control of the evaporator load from zero to full power. Refrigerant R12 vapour is drawn into the compressor from the evaporator mounted on the front of the panel. Work is done on the gas in the compressor and its pressure and temperature are raised. This hot, high pressure gas discharges from the compressor and flows into the panel mounted water cooled condenser, where heat is removed from it. This liquid then flows through a thermostatic expansion valve. Here it passes through a controlled orifice, which allows its pressure to fall from that of the condenser to that of the evaporator. The refrigerant has a satu- rated vapour phase at this point. The voltage across the heater elements may be varied from zero to that of the mains supply voltage by adjustment of a voltage controller situated on the front panel. Measurement of the power is carried out by a panel mounted digital wattmeter. 4 http://www.p-a-hilton.co.uk/R714-Edition-2-GREY.pdf UMAR DARAZ Page 7 of 22 Thermodynamics Lab 2 Results The observation table below shows all the values of different components in the refrigeration plant along with input indices and output indices, enthalpy of the cycle and losses in the system. The calculations required to get those results (to complete the table) are also listed after this table below. 1 Condenser pressure (gauge) Pc KNm-2 900 900 900 2 Evaporator pressure (gauge) Pe KNm-2 -20 20 40 3 Condenser pressure (Abs) Pc KNm-2 1001.663 1001.663 1001.663 4 Evaporator pressure (Abs) Pe KNm-2 81.663 121.663 141.663 5 Compressor suction t1 0 C -23.5 -22.6 -5.2 6 Compressor delivery t2 0 C 59.9 68.5 69.4 7 Liquid leaving condenser t3 0 C 31.6 34.8 33.8 8 Evaporator inlet t4 0 C -32 -23.6 -19.1 9 Water inlet t5 0 C 23.8 21.6 21.4 10 Water outlet t6 0 C 41.2 38.6 39.5 11 Water flow rate Mw g s-1 1.5 5.0 6.0 12 R 12 Flow rate Mr g s-1 0.7 1.5 1.9 13 Evaporator Volts Ve V 40 70 100 14 Evaporator Amps Ie I 1 A 1.70 A 2.42 A 15 Motor Volts Vm V 235 232 232 16 Motor Amps Im A 3.6 3.6 3.6 17 Spring balance Force F N 5.5 7.5 8.2 18 Compressor speed nc rpm 477 474 473 UMAR DARAZ Page 8 of 22 Thermodynamics Lab 2 19 Motor Speed = 3.17 ÃÆ'- nc Nm rpm 1512.09 1502.58 1449.71 20 h1 KJ/Kg 340 345 360 21 h2 KJ/Kg 385 400 420 22 h3 KJ/Kg 225 240 250 23 h4 KJ/Kg 160 170 180 24 Qe,Elec = Ve ÃÆ'- Ie W 40 119 242 25 Qe, R 12 = Mr(h1 h4) W 126 262.50 342 26 Wc = 0.0172ÃÆ'-FÃÆ'-Nm W 143.043 193.832 204.467 27 Power factor at shaft (power Wc) pf 0.43 0.48 0.52 28 Wm = Vm. Im. pf W 363.78 400.89 434.31 29 Wc = Mr (h2 h1) W 31.5 82.50 114.0 30 Q cond = Mr (h2 h3) W 112 240 323 31 Qw = Mw ÃÆ'- 4.18 (t6 t5) W 109.09 376.20 428.87 32 CoPnet = Qe, Elec / Wm 0.109 0.296 0.557 33 CoP R12 = (h1 h4)/(h2 h1) 4.0 3.1818 3.00 34 t41 can be found by (t1 t4) 0 C 8.5 1.00 13.9 35 CoP (te-t2) = t41 / (t2-t41) 0.165 0.015 0.250 36 Motor loss = Wc Wm W -220.73 -207.06 -229.84 37 Compressor loss = Wc-Wc W -111.54 -110.33 -90.47 38 System loss = Qcond Qw W 2.91 -136.20 -105.87 39 System loss = Qe, R12 Qe,Elec W 86 143.50 100.0 UMAR DARAZ Page 9 of 22 Thermodynamics Lab 2 Figure 3 A graph represents the relationship between net CoP and evaporator temperature Figure 4 A comparison of different losses of the system in one graph against Evaporator temperature The fluctuation and randomness in the graphs is because of the poor calibration and less number of repeated results (less tests provide less information), and most of the recorded results are based on guessed values. Calculations To find absolute pressure, we need an atmospheric and gauge pressure of the component. Now for two individual components,  · Condenser As we know Patm = à Ã‚ gh = 13600 kg/m3 ÃÆ'- 9.81 m/s2 ÃÆ'- 762 ÃÆ'-10-3m = 101.663ÃÆ'-103 Kg / ms2 = 101.663 KN/m2 Hence Pgauge,cond = 900 KN/m2 Pabs,cond = Patm + Pgauge,cond = 101.663 + 900 = 1001.663 KN/m2  · Evaporator As Patm = à Ã‚ gh = 13600 kg/m3 ÃÆ'- 9.81 m/s2 ÃÆ'- 762 ÃÆ'-10-3m = 101.663ÃÆ'-103 Kg / ms2 = 101.663 KN/m2 i. Pgauge,Evap = -20 KN/m2 Pabs,Evap = Patm + Pgauge,Evap Therefore = 101.663 + (-20)= 81.663 KN/m2 ii. Pgauge,Evap = 20 KN/m2 Pabs,Evap = Patm + Pgauge,Evap = 101.663 + (20)= 121.663 KN/m2 iii. Pgauge,Evap = 40 KN/m2 Pabs,Evap = Patm + Pgauge,Evap Therefore = 101.663 + 40 = 141.663 KN/m2 To find Qw (Heat removal from condenser) As we repeated the experiment three times, so water flow rate have three different values, hence we need to find Qw at three points, Qw = Mw ÃÆ'- 4.18 (t6 t5) When Mw = 1.5 gs-1, t6 = 41.2 0C, t5 = 23.8 0C Qw = 1.5 ÃÆ'-4.18 (41.2 23.8) = 109.098 W UMAR DARAZ Page 11 of 22 Thermodynamics Lab 2 As Qw = Mw ÃÆ'- 4.18 (t6 t5) When Mw = 5.0 gs-1, t6 = 39.6 0C, t5 = 21.6 0C So Qw = 5.0 ÃÆ'-4.18 (39.6 21.6) = 376.2 W Qw = Mw ÃÆ'- 4.18 (t6 t5) When Mw = 6.0 gs-1, t6 = 38.5 0C, t5 = 21.4 0C Qw = 6.0 ÃÆ'-4.18 (38.5 21.4) = 428.87 W To find Wc (work done by the compressor or a shaft loss) The work done by the compressor depends on spring balance force and motor speed, hence to get more work done out of the compressor we need to increase any of the above mentioned parameters. Therefore Wc = 0.0172ÃÆ'-FÃÆ'-Nm i. Wc = 0.0172ÃÆ'-5.5ÃÆ'-1512.09 = 143.043 W ii. Wc = 0.0172ÃÆ'-7.5ÃÆ'-1502.58 = 193.832 W iii. Wc = 0.0172ÃÆ'-8.2ÃÆ'-1449.71 = 204.467 W To find Wm (work done by the motor on a shaft to rotate) The work done by the motor is a product of voltage provided, amount of current flowing the motor and power factor of the shaft, which gives us the following values; Wm = Vm ÃÆ'- Im ÃÆ'- pf i. Wm = 235 ÃÆ'- 3.6 ÃÆ'- 0.43 = 363.78 ii. Wm = 232 ÃÆ'- 3.6 ÃÆ'- 0.48 = 400.89 iii. Wm = 232 ÃÆ'- 3.6 ÃÆ'- 0.52 = 434.31 UMAR DARAZ Page 12 of 22 Thermodynamics Lab 2 To find CoPnet (Total coefficient of performance of refrigerant) CoPnet = Qe, Elec / Wm By substituting different values of electric input heat energy (artificial input energy) and the work done by the motor, we get net coefficient of performance of the cycle, i. CoPnet = 40 / 363.78 = 0.109 = 11% ii. CoPnet = 119 / 400.89 = 0.296 = 30% iii. CoPnet = 242 / 434.31 = 0.557 = 56% To find CoP (te-t2) This is the coefficient of performance of ratio of temperature values at point 1-4 and difference of it, to the temperature of the refrigerant after compression, so we get following CoP (te-t2) = t41 / (t2-t41) i. CoP (te-t2) = 13.9 / (69.4 13.9) = 0.250 = 25% ii. CoP (te-t2) = 8.5 / (59.9 8.5) = 0.165 = 16% iii. CoP (te-t2) = 1.0 / (68.5 1.0) = 0.015 = 1.5% To find Qe, R 12(Heat removal from Evaporator) The given equation is à ¢Ã¢â€š ¬Ã‚ ¦ Qe, R 12 = Mr (h1 h4) By substituting different values of enthalpy, which we recorded from a pressure enthalpy diagram, so we get i. Qe, R 12 = 0.7 (340 160) = 126.0 ii. Qe, R 12 = 1.5 (345 170) = 262.5 iii. Qe, R 12 = 1.9 (360 180) = 342.0 UMAR DARAZ Page 13 of 22 Thermodynamics Lab 2 To find Wc (Input work done or compressor work loss) The input work done by the compressor can be calculated by finding flow rate of the refrigerant R12 and the difference of enthalpy of refrigerant before and after the compression. Wc = Mr (h2 h1) Substituting all three values of the above parameters (variables), we get i. Wc = 0.7 (385 340) = 31.5 ii. Wc = 1.5 (400 345) = 82.5 iii. Wc = 1.9 (420 360) = 114 To find Q cond (Heat loss by the condenser) Similarly heat loss by the condenser is a product of refrigerant flow rate to the difference of enthalpy values of it, before entering and leaving the condenser, we get Q cond = Mr (h2 h3) Now, using above stated equationà ¢Ã¢â€š ¬Ã‚ ¦ i. Q cond = 0.7 (385 225) = 112 ii. Q cond = 1.5 (400 240) = 240 iii. Q cond = 1.9 (420 250) = 323 To find CoPR12 (Coefficient of performance of refrigerant) CoP R12 = (h1 h4)/(h2 h1) Coefficient of performance of refrigerant is a ratio of all the enthalpy values in the cycle, here note that for ideal vapour compression refrigeration cycle h3 = h4 Hence we get i. CoP R12 = (340 160) / (385 340) = 4.00 ii. CoP R12 = (345 170) / (400 345) = 3.1818 iii. CoP R12 = (360 180) / (420 360) = 3.00 UMAR DARAZ Page 14 of 22 Thermodynamics Lab 2 Systems losses Motor loss = Wc Wm = 143.043 363.78 = -220.75 = 193.832 400.89 = -207.06 = 204.467 434.31 = -229.84 Compressor loss = Wc-Wc = 31.5 143.043 = -111.54 = 82.5 -193.832 = -110.33 = 114 204.467 = -90.47 System loss = Qcond Qw = 112 109.09 = 2.91 = 240 376.20 = -136.20 = 323 428.87 = -105.87 System loss = Qe, R12 Qe,Elec = 126 40 = 86.00 = 262.5 119 = 143.50 = 342 242 = 100.00 UMAR DARAZ Page 15 of 22 Thermodynamics Lab 2 Discussion of Results The observation table of results has been listed on page 8 9, and it is followed by all the calculations required to complete the table or to get the results. The experiment has been repeated three times, so all the results (values have been listed three times. In the calculation section the system losses and heat energy are shown as negative val- ues, its because the work is done on the system and heat is being removed from that particu- lar system, in this case its condenser. The positive values of system loss and heat energy shows that heat is being add in the system and work is done by the system, and in this case its evaporator. The condenser pressure i.e.900 KPa, was not exactly 900 KPa. As we were set- ting the pressure manually, so in the whole experiment the pressure was 900 KPa  ± 10%, it was because of the fluctuation in the gauge needle, so we assumed the considered pressure. The compressor pressure applied by spring balance force, affected the work done of the com- pressor on the refrigerant R12, because to get an accurate compressor work done, the two tips of the spring balance should be in balance (level), but during an experiment we were getting random values (results), so then I realised that something is wrong, so I looked at all the components of the refrigeration plant, and I found that the two tips of the spring were not bal- ance. Hence to get right results we had to redo the experiment. The throttling device or valve has a huge impact on condenser pressure, because by opening or closing i.e. changing a flow rate make a considerable amount of difference on condenser pressure and evaporator tem- perature. Motor loss refers to the consumption of electrical energy not converted to useful mechanical energy output, but in this case energy loss means less input energy to the compressor, which means a refrigerant would be less compressed by a compressor, so less heat would be re- moved by the condenser, and even after passing through the valve the refrigerant would still have a high temperature and pressure, hence less refrigeration would occur in a vapour com- pression cycle. Therefore we need to take into account power losses in the electric motor. In order to study this process more closely, refrigeration engineers use this pressure en- thalpy diagram shown in Figure 5. This diagram is a way of describing the liquid and gas phase of a substance. Enthalpy can be thought of as the quantity of heat in a given quantity, or mass of substance. The curved line is called the saturation curve and it defines the boundary of pure liquid and pure gas, or vapour. In the region marked vapour, its pure va- pour. In the region its marked liquid, it is a pure liquid. If the pressure rises so that we are considering a region above the top of the curve, there is no distinction between liquid and va- pour. Above this pressure the gas cannot be liquefied. This is called the Critical Pressure. In the region underneath the curve, there is a mixture of liquid and vapour. UMAR DARAZ Page 16 of 22 Thermodynamics Lab 2 3 2 4 1 Figure 65 Pressure Enthalpy diagram Evaporator Pressure line Condenser pressure line stage (Not a straight line) Isobar Condensation stage sion valve R12 Evaporation process 5 http://www.mvsengineering.com/chapter18.pdf UMAR DARAZ Page 17 of 22 Isentropic Compression R12 passing through Expan- Thermodynamics Lab 2 At the inlet of the compressor the temperature (t1) is the same as temperature of refrigerant R12 at the outlet of the evaporator. So we go straight from that temperature of left side of the doom (saturated liquid) to the right side of the doom (saturated vapour line), and then following the temperature gradient line, we go down and record the enthalpy value at that temperature and pressure. Similarly for the stage 2, we find h2 on x-axis. When the refrigerant leaves the condenser, it obtains a saturated liquid phase (left side of the doom), so taking the reference of condenser pressure line (red line), we take a straight line parallel to the y-axis, and wherever it meets the x-axis gives a value of enthalpy (h3) at stage three. In actual refrigerant plant, enthalpy at stage 3 and stage 4 is not same, but for the sake of calculation we assume that its an ideal condition and enthalpy at these two points is same. Test 1 As Compressor suction = t1 = -23.5 0C and condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h1 = 340 KJ/Kg Compressor delivery = t2 = 59.9 0C and Condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h2 = 385 KJ/Kg Here Liquid leaving condenser = t3 = 31.6 0C And Condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h3 = 225 KJ/Kg As mentioned earlier that h3 = h4 (Ideal condition) Hence the enthalpy h4 = 225 KJ/Kg But using temperature at evaporator inlet, t4 = -32 0C, we get Actual enthalpy value, h4 = 160 KJ/Kg Test 2 As Compressor suction = t1 = -22.6 0C and condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h1 = 345 KJ/Kg (from above p-h diagram) Compressor delivery = t2 = 68.5 0C and Condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence using Figure 4, we get enthalpy h2 = 400 KJ/Kg Here Liquid leaving condenser = t3 = 34.8 0C And Condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h3 = 240 KJ/Kg UMAR DARAZ Page 18 of 22 Thermodynamics Lab 2 As mentioned earlier that h3 = h4 (Ideal condition) Hence the enthalpy h4 = 240 KJ/Kg But using temperature at evaporator inlet, t4 = -23.6 0C, we get Actual enthalpy value using figure 4, h4 = 170 KJ/Kg Test 3 As Compressor suction = t1 = -5.2 0C and condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h1 = 360 KJ/Kg Compressor delivery = t2 = 69.4 0C and Condenser Pressure (Abs) = Pc = 1001.663 KNm-2 Hence the enthalpy h2 = 420 KJ/Kg Here Liquid leaving condenser = t3 = 33.8 0C And Condenser Pressure (Abs) = Pc = 1001.663 KNm-2, Evaporator Pressure = 40 KPa Hence the enthalpy h3 = 250 KJ/Kg As mentioned earlier that h3 = h4 (Ideal condition) Hence the enthalpy h4 = 250 KJ/Kg But using temperature at evaporator inlet, t4 = -19.1 0C, we get Actual enthalpy value at this stage, h4 = 180 KJ/Kg 6However the expansion of the high pressure liquid, process 5 1 above is non reversible. Notice that Expansion is a constant enthalpy process. It is drawn as a vertical line on the P-h diagram. No heat is absorbed or rejected during this expansion, the liquid just passes through a valve, like water coming out of a tap. The difference is that because the liquid is saturated at the start of expansion by the end of the process it is partly vapour. Point 1 is inside the curve and not on the curve as described in the Evaporation process. At point 4 it starts to condense and this continues until point 5 when all the vapour has turned into liquid. Point 5 is saturated liquid. If more heat is removed, the liquid cools. It is then called sub-cooled liquid. Hence h4 is on a saturated liquid line (left side of the doom), and does not appear in a vapour compression cycle, and this is the case in all three tests. 6 http://www.alephzero.co.uk/ref/vapcom.htm#ph UMAR DARAZ Page 19 of 22 Thermodynamics Lab 2 As there is no moving part in the whole refrigeration plant apart from motor shaft of a compressor, so work done by them is zero, i.e. w = 0 So using steady state energy equation, we get W Q = h2 h1 Equation (2) As W =0, so equation (1) becomes Q = h2 h1 Or Q = h1 h2 Equation (3) The coefficient of performance or COP (sometimes CP), of a heat pump (i.e. refrigerator) is the ratio of the change in heat at the output (the heat reservoir of interest) to the supplied work.To find Cop value of refrigeration plant as well as for the refrigerant is a good practice, because this will illustrate that how much efficient of these two are. 7It takes a lot of heat to evaporate liquid. In other words a small amount of liquid circulating in a refrigerator can perform a large amount of cooling. This is one reason why the vapour compression cycle is widely used. The refrigeration system can be small and compact. Also from a practical point of view heat exchange is much better when using change of state evaporation and condensation. However the expansion of the high pressure liquid, process 5 1 above is non reversible. And so the efficiency of this cycle can never even approach Carnot efficiency. 7 http://www.alephzero.co.uk/ref/practcop.htm UMAR DARAZ Page 20 of 22 Thermodynamics Lab 2 Conclusion 8The vapour-compression cycle is used in most household refrigerators as well as in many large commercial and industrial refrigeration systems but the efficiency of this cycle can never even approach Carnot efficiency, because of its low coefficient of performance. In the refrigeration plant the operating parameters can be varied by adjustment of condenser cooling water flow and electrically heated evaporator supply voltage. Components have a low thermal mass resulting in immediate response to control variations and rapid stabilisation. Instrumentation includes all relevant temperatures, condenser pressure, evaporator pressure, refrigerant and cooling water flow rates, evaporator and motor power, motor torque and com- pressor speed. The most of components of refrigeration plant used in this experiment (R712) are manually calibrated scales (not digital), and based on this poor calibration all the recorded results are being guessed on the base of individual judgment, which is wrong most of the time. Anyway a small amount of liquid circulating in a refrigerator can perform a large amount of cooling. This is one reason why the vapour compression cycle is widely used. The enthalpy values which are being recorded directly from enthalpy pressure diagram (Figure 4), and based on how unclear that diagram is, I would say it is not a great source of information, but still we use this to find enthalpy. The system (refrigeration plant) has some losses, which have described earlier in this report, this includes motor loss, condenser and evaporator loss. In conclusion, I would like to say that by doing this experiment I learnt a great amount of knowledge, about refrigeration plant, and how it works, what kind of cycle more often use for this, how much efficient is this and how to calculate the different losses in this system. I would say by understanding the operation of this small scale refrigeration plant, I think I would be able to operate on an industrial scale refrigeration plant, because the basic principle is same. 8 http://www.alephzero.co.uk/ref/vapcomcyc.htm UMAR DARAZ Page 21 of 22 Thermodynamics Lab 2

Patients With Post Stroke Dysphagia Health And Social Care Essay

Patients With Post Stroke Dysphagia Health And Social Care Essay This chapter deals with discussion, summary and conclusions drawn. It clarifies the limitations of the study, the implications and recommendations given for different areas in Nursing practice, Education, administration and research. DISCUSSION The present study was designed to assess the effectiveness of Selected Nursing Interventions among patients with Post Stroke Dysphagia at KMCH, Coimbatore-14. The researcher carried out the study among 30 patients and adopted pre-experimental research design with single group pre test post test design. The researcher used non probability purposive sampling technique to select the 30 subjects. The researcher conducted this study to assess the effectiveness of Shaker Exercise and Hyoid Lift Maneuver on Swallowing and Feeding Performance among patients with Post Stroke Dysphagia. DEMOGRAPHIC DESCRIPTION OF SUBJECTS The demographic variables included in the study were Age, Sex, Education and Habits. The mean Age of the subjects was 60. Half of the subjects were in the Age group 50-70 years. Almost equal numbers of subjects were in the 30-50 and above 70 years Age groups and it was about 23 and 27 percent respectively. Regarding the Sex, nearly equal numbers of subjects were in the male and female Sex group and it showed 53 and 47 percent respectively. On the basis of their Educational Status, 67 percent of the subjects were studied up to secondary Education. About 33.33 percent of the subjects completed any one of the graduate degree course. In accordance with their Personal Habits, 53.33 percent had no bad Habits like Smoking and Alcoholism. Ten percent of subjects had the habit of Tobacco use. Seven percent of subjects were consuming Alcohol. Thirty percent of the subjects had the habit of both Tobacco and Alcohol consumption. CLINICAL DESCRIPTION OF SUBJECTS The clinical variables include Type of Stroke and Co-morbid Illness. In consistent with the Type of Stroke, 10 percent of the subjects had Stroke due to the problem in anterior circulation, 40 percent of the subjects had Stroke due to problem in middle circulation and 50 percent of the subjects had Stroke due to problem in the posterior circulation. With reference to the Co-morbid Illness, 13.33 percent of the subjects had No Co-morbid Illness. About 10 and 40 percent of the subjects had the complaints of Diabetes Mellitus and Hypertension respectively. Remaining 36.67 percent of the subjects had both Hypertension and Diabetes Mellitus. The major findings of the study were discussed according to the objectives: The first objective was to assess the Swallowing and Feeding Performance of patients with Post Stroke Dysphagia. In the pre test assessment of the Swallowing Performance using GUSS Score indicates 23.33% of the subjects had Mild Dysphagia, 40% of the subjects had Moderate Dysphagia and 36.67% of the subjects had Severe Dysphagia. The post-test assessment of Swallowing Performance explains that 16.67% of the subjects were improved to the No Dysphagia stage with good Swallowing and Feeding Performance. About 26.67% of the subjects had Mild Dysphagia and 23.33% of the subjects had Moderate Dysphagia. Remaining 33.33% of the subjects had severe Dysphagia with various improvements in the Swallowing Performance. The pre test and post test Feeding Performance Score using FOIS describes equal number of subjects in the Tube Dependent (36.67%) and Total Oral Intake category (63.33%). Despite the result revealed an equal number of subjects in the pre and post test assessment, the subjects had an improvement in the Feeding Performance during the post test assessment from no oral intake level to tube supplement with consistent oral intake level in the Tube Dependent category. Likewise, subjects showed an improvement from the intake of single consistency to the total intake with no restriction in the Total Oral Intake category. The present study was supported by Trapl et al., who conducted study in 2002 and described that out of 30 patients, 30 to 50% had Severe Dysphagia and showed significantly higher risk of aspiration with liquids compared with semisolid textures (p=0.001). Therefore they confirmed the subsequent sequence of GUSS. The second objective was to determine the effectiveness of Selected Nursing Interventions on Swallowing and Feeding Performance in patients with Post Stroke Dysphagia. With reference to the Swallowing Performance based on the GUSS Score, the mean pre-test SwallowingS among subjects was 12.50 and the mean post-test Swallowing Score was 13.87 based on the GUSS tool. Paired t test was used to compute the mean difference. The t value for this mean difference between pre and post test Swallowing Score was 6.150. The t value obtained at .001 level of significance and at 29 degrees of freedom. Hence there is a significant difference exist between the mean pre and post test Swallowing Scores. It further implies that the Swallowing Score in the post test was higher than the pre test Swallowing Score. This improvement was due to the Selected Nursing Interventions such as Swallowing Exercises and Positioning while Swallowing. So the Swallowing Exercises such as Shaker Exercise and Hyoid Lift Maneuver found to be effective in improving the Swallowing Performance in Stroke patients. The final result concluded that 22 subjects (73.3%) expressed improvement after the treatment. Remaining 8 subjects (26.7%) had no changes in their Swallowing Performance after the therapy. The median of pre-test Feeding Score among subjects was 5 and the median of post-test Feeding Score was 6.5. Sign test was computed to find out the difference between the pre and post test median Scores of Feeding. The sign test Score showed the p value 0.000 which was significant at .001 level. It showed that, a significant difference present between the pre and post test Feeding Scores. It further implies that the Feeding Score in post test was higher than the pre test Feeding Score. This improvement in the Feeding Performance was due to the Selected Nursing Interventions. So the Swallowing Exercises were effective in improving the Feeding Performance in Stroke patients having Dysphagia. Median test was used to compare the effect between the pre test and post test group instead of mean as because the FOIS was a 7 point likert scale. As the variables did not follow the normality and the highest Score was 7, parametric test was not applicable. Hence non parametric sign test was adopt ed which is equivalent to paired t test to find out the effectiveness. The result of the present study was substantiated with a study conducted by Mepani et al., in 2005 on augmentation of deglutitive thyrohyoid muscle shortening by the Shaker Exercise. The study involved the effect of 6 weeks shaker exercise in 11 dysphagic patients; six patients were randomized to control group and 5 patients to the Shaker Exercise group. After the therapy the change in thyrohyoid distance among Shaker Exercise group was significantly greater compared to the control group (p=0.034), this subsequently improve the swallowing function of the patients. Association of the Swallowing and Feeding Performance with selected Demographic and Clinical variables among patients with Post Stroke Dysphagia The Fisher exact test was used to associate the selected Demographic and Clinical variables with the Swallowing and Feeding Performance of the patients with Post Stroke Dysphagia. The calculated p values for the association between the Swallowing Performance of Post Stroke patients with the selected Demographic and Clinical variables such as Sex, Habits, Type of Stroke and Co-morbid Illness were not significant and hence there exist no association between them. The calculated p values for the association between the Feeding Performance of Post Stroke patients with selected Demographic and Clinical variables such as Sex, Habits, Type of Stroke and history of Co-morbid Illness were not significant and hence there is no association between them. SUMMARY The aim of the present study was to assess the effectiveness of Selected Nursing Interventions on Swallowing and Feeding Performance among patients with Post Stroke Dysphagia, for which the following objectives were formulated; To assess the Swallowing and Feeding Performance of patients with Post Stroke Dysphagia. To determine the effectiveness of Selected Nursing Interventions on Swallowing and Feeding Performance in patients with Post Stroke Dysphagia. To associate the Swallowing and Feeding Performance with selected Demographic and Clinical variables. The study was based on Ernesteine Wiedenbachs helping art of clinical nursing theory (1970). The research design applied for the study was pre experimental single group pre test-post test design. Study was conducted in KMCH. 30 samples were selected by non probability purposive sampling technique. The tool used for data collection consists of Demographic and Clinical variables, Gugging Swallowing Screen (GUSS) and Functional Oral Intake Scale (FOIS) to assess the Swallowing and Feeding Performance in Post Stroke Dysphagic patients. The data were collected for a period of 6 weeks. Descriptive and inferential statistics were used in statistical analysis, to assess the effectiveness of Selected Nursing Interventions among patients with Post Stroke Dysphagia. Fisher exact test was used to find out the association between the selected Demographic and Clinical variables with the Swallowing and Feeding Performance in patients with Post Stroke Dysphagia. Major findings of the study On the basis of Gugging Swallowing Screening (GUSS), the investigator observed the degrees of improvement in Swallowing difficulty after the therapy among patients with Post Stroke Dysphagia. About 16.67% of the subjects had No Dysphagia, 26.67% had Mild Dysphagia, 23.33% had Moderate Dysphagia, and 33.33% had Severe Dysphagia. In accordance with the Functional Oral Intake Scale (FOIS), 36.67% of the subjects were in Tube Dependent category and 63.33% were in Total Oral Intake category with sustained improvement in the Feeding Performance. The mean pre test score of the Swallowing Performance using Gugging Swallowing Screening (GUSS) tool was 12.50. The mean post test Score of the Swallowing Performance using GUSS evaluation tool was 13.87. There was a significant difference between the mean pre-test and post-test Swallowing Performance Score. The t value obtained was 6.150 which is significant at 0.001 level and at 29 degrees of freedom. The final result explained that, 22 subjects (73.3%) expressed Swallowing improvement after the treatment. Remaining eight subjects (26.7%) had no changes in their Swallowing Performance after the therapy. Median test was used to compare the Feeding Performance Score of the pre and post test groups. The median pre test Feeding Performance of the patients with Post Stroke Dysphagia was 5 with a range of 1 to 6 and that of post median test was 6.5 with a range of 1 to 7. The non parametric sign test was used to find out the effectiveness of the therapy on Feeding Performance. The obtained p value was 0.000 at 0.01 level of significance. This revealed a significant improvement in the Feeding Performance of Post Stroke Dysphagic patients. The final result revealed that 24 respondents (80%) showed an improvement in their Feeding Performance after the therapy and was assessed by FOIS scoring. But remaining six respondents (20%) showed no changes in the Feeding Performance when assessed by FOIS. There was no significant association exist between the Swallowing and Feeding Performance of the Post Stroke Dysphagic patients with the selected Demographic and Clinical variables. CONCLUSION The study was tested and accepted the hypothesis that there is a significant difference in Swallowing and Feeding Performance before and after the implementation of Selected Nursing Interventions in Post Stroke patients with Dysphagia. The result concluded that the study group had better outcome than the others. There was a significant improvement in the Swallowing and Feeding Performance of the Post Stroke Dysphagic patients after the Exercise and Positioning therapy. The participants had reduced the risk of aspiration and aspiration related complications after the therapy. Hence, Selected Nursing Interventions such as Swallowing Exercises like Shaker exercise and Hyoid Lift Maneuver and positioning during Swallowing can be recommended for the patients with Post Stroke Dysphagia. IMPLICATIONS The present study has its own implications in nursing practice, nursing education, nursing administration and nursing research. Nursing practice: Dysphagia is one of the major complications among Post Stroke patients. This study implies the effectiveness of Selected Nursing Interventions in the improvement of Swallowing and Feeding Performance among the Post Stroke Dysphagic patients. This study creates awareness among the nursing personnel about the importance of the various complications after the Stroke and its various evidence based management. The present study shows that the exercise intervention for the Post Stroke Dysphagic patients can prevent the risk of aspiration and aspiration pneumonia. The result shows that, Selected Nursing Intervention for the Post Stroke patients can reduce the risk of malnourishment. Nurses can gain skill for providing Swallowing Exercises in the Post Stroke Dysphagic patients to improve their quality of life. Nursing Education: The nurse educator can create awareness among the health care professionals about the complicated effects of Stroke and its various evidence based management. The nurse educator can arrange in-service Education programs to update their knowledge regarding the new techniques and modalities to manage the Post Stroke Dysphagia. The nurse educator can teach the students about the present study findings and its implication in patients with Post Stroke Dysphagia. This will help to improve the knowledge of the students on Swallowing Exercises. The nurse educator can motivate the nursing personnel and students to use this Swallowing Exercises and positioning in the improvement of Swallowing and Feeding Performance and in the reduction of aspiration risk in Post Stroke Dysphagic patients. Nursing administration: Nurse administrator should aware of the problem experienced by the clients after the Stroke. Nurse administrator can provide continuing education or short term courses in the clinical area for preparing the nurses with competence in managing the after effects of Stroke especially Dysphagia. Nurse administrator can plan and organize seminars, workshops and conferences about Selected Nursing Interventions for the improvements of Swallowing and Feeding Performance among patients with Post Stroke Dysphagia. Nurse administrator can formulate protocol to incorporate the study findings in nursing intervention. Nursing research: This study provides a basis for further studies. The findings of the study can be a foundation for conducting the study on large sample to strongly support the efficacy. The implications of the study can be used as a motivation for nurses to conduct research in India, where the health care system is advancing. This study helps to update the knowledge and proper utilization of resources in the field of nursing practice. LIMITATIONS OF THE STUDY The study was limited to small sample size of 30 subjects. The study was limited to a single setting. The study was conducted using a single group. RECOMMENDATIONS A similar study can be conducted with large number of subjects to generalize the research findings. A study can be conducted at different settings. Similar study can be undertaken using different Swallowing and lingual exercises. This study can be conducted with experimental and quasi experimental design. A comparative study can be conducted between different types of Swallowing Exercises in Post Stroke Dysphagic patients. A similar study can be done to assess the effectiveness of Swallowing Exercises among patients with Dysphagia who are receiving head and neck radiation for cancer. ABSTRACT The present study entitled Effectiveness of Selected Nursing Interventions on Swallowing and Feeding Performance among patients with Post Stroke Dysphagia at KMCH, Coimbatore-14. This study was undertaken during the year 2012-2013, in partial fulfillment of requirement for the degree of Master of Science in Nursing at KMCH College of Nursing, Coimbatore, which is affiliated to the Tamilnadu Dr. M.G.R. Medical University, Chennai. Objectives: 1.To assess the Swallowing and Feeding Performance of patients with Post Stroke Dysphagia. 2. To determine the effectiveness of Selected Nursing Interventions on Swallowing and Feeding Performance in patients with Post Stroke Dysphagia. 3. To associate the Swallowing and Feeding Performance with selected Demographic and Clinical variables. Research Design: Pre experimental design with single group pre test-post test design. Setting: Neuro inpatient and outpatient department of Kovai Medical Center and Hospital, Coimbatore. Samples: All Post Stroke Dysphagic patients. Sample Size: The sample size was 30. Sampling Technique: Non probability purposive sampling. Conceptual framework: Ernestine Widenbachs Helping Art of Clinical Nursing Theory (1970) was adopted. Intervention: Selected Nursing Interventions such as Swallowing Exercises and Positioning during the swallowing were incorporated. The clients were instructed to do the Shaker Exercise and Hyoid Lift Manoeuvre 3 to 6 times a day for a period of 6 weeks. The subjects were instructed to elevate or down the chin and tilt the head towards stronger side while Swallowing. Outcome Measures: Swallowing and Feeding Performance was assessed by Gugging Swallowing Screen (GUSS) and Functional Oral Intake Scale (FOIS) respectively. Results: The mean difference between pre and post test Swallowing Score was 6.150 and which was significant at 0.001 level. The p value obtained for Feeding Score was 0.000 at 0.001 level of significance. The result showed a significant improvement in the Swallowing and Feeding Performance. Conclusion: This study proved that the implementation of Selected Nursing Interventions rather than the other conventional treatment will improve Swallowing and Feeding Performance among Post Stroke patients with Dysphagia. Hence the Swallowing Exercises and Positioning can be recommended in clinical practice to improve the Swallowing and Feeding Performance in Post Stroke Dysphagic patients.

Analysis of To Kill a Mockingbird by Harper Lee Essay -- To Kill a Moc

Analysis of To Kill a Mockingbird by Harper Lee â€Å"To Kill a Mockingbird† by Harper Lee is a story of national magnitude that contains complex characters. Harper Lee deals with the emotions and spirits of the characters insightfully. A few of these characters display courage at one point or another in the story. These flashes of courage come during turbulent times of the story, and often led to success. Atticus Finch displayed courage on numerous occasions. Without his wife he had to raise Jem and Scout alone for most of their lives. Because he knew he had to set an example for his children to follow, Atticus tried never to let his emotions get the best of him. He stated on several occasions that he would not be able to tell his children one thing and do another. He believed in teaching by example, and his methods worked. Scout views her father as the bravest person she ever knew when he was cordial to Mrs. Dubose, despite her gibes. In front of the jail, Atticus was reading to Tom Robinson, a Negro he was defending in a rape case. The black versus white mentality was like a wildfire through almost all of Maycomb’s white residents during this case. As he was reading Atticus was approached by a group of men wanting to get at Tom. â€Å"’He in there, Mr. Finch?’ ‘He is and he’s asleep. Don’t wake him up.’ ‘You know what we want. Get aside from the door, Mr. Finch’ ‘You can turn around and go home again, Walter.’†(151) Atticus stood strong against an entire mob due to his strong values. He would not budge, even though he was outnumbered. His voice was cool and collected throughout the entire encounter, proving once more his courage. Atticus was also courageous when he aimed to defend Tom Robinson instead of just allowing the guilty verdict. â€Å"’Lemme tell you somethin’ now, Billy, you know the court appointed him to defend this nigger.’ ‘Yeah but Atticus aims to defend him. That’s what I don’t like about it.’†(163) In those times many lawyers did not attempt to defend black men against white men. They were biased against their own clients. But Atticus, however, would not do such a thing. He stuck to his beliefs and continued the trial even though he knew that he could never win with a biased jury. To use his own words for him, Atticus was licked before he began but he began anyway and saw it through to the end. Jem is another character that displays... ... his reading. Then an alarm clock would sound and Jem and Scout would be shooed away by Mrs. Dubose’s maid Jessie. â€Å"’Mrs. Dubose was a morphine addict. She tood it as a pain-killer for years. The doctor put her on it. She’d have spent the rest of her life on it and died without much agony, but she was too contrary†¦She said she was going to leave this world beholden to nothing and nobody†¦She said she meant to break herself of it before she died, and that’s what she did†¦I wanted you to see what real courage is, instead of getting the idea that courage is a man with a gun in his hand. It’s when you know your licked before you begin but you begin anyway and you see it through no matter what. You rarely win, but sometimes you do. Mrs. Dubose won, all ninety-eight pounds of her. According to her views, she died beholden to nothing and nobody. She was the braves person I ever knew.†(112) Atticus would have made Jem read to her anyway just to realize how courageous she really was. Mrs. Dubose knew that she would be in great pain but stuck to her ideals and came out on top. She was very old and sickly yet still conquered her morphine addiction. As Atticus said, she possessed real courage.

Maya Angelo Essays -- biographies bio biography

If I could have the honor of meeting that one person it would be Maya Angelo. She was an inspirational and phenomenal woman of her decade. Not only was she an actress and poet, she was a mother too. Maya Angelo was a beautiful black woman in her time that stood for what was just. She experienced slavery, and even endured it. Her legacy and history is passed on through many of her books like â€Å"I know why the caged bird sings†, or through her poems such as â€Å"A raisin in the sun† and â€Å"phenomenal woman†. Thanks to her tenacity and considerateness this younger generation that I am growing up in can visit the past time and time again through her magnificent writings. Maya Angelo style of writing was very different from the many black authors I had read in the past. I say that because her choi...

Open Polytechnic Nz Operations Management Assignment 1 T3 2012

| 71232 Operations Management| Assignment 1| | Matt Hinkley 3319696| 12/10/2012| | Contents Question 1: Operations management role2 Question 2: Types of production4 Question 3: Environmental factors5 Question 4: Strategic options [case provided]6 Case question 1 (customers)6 Case question 2 (competitors)6 Case question 3 (strategic decisions)6 Case question 4 (expansion issues)7 Question 5: Measures of quality8 Question 6: Types of quality management9 Works Cited10 Figures Figure 1: Company structure2 Tables Table 1: Quality characteristic measurements8Part A: Nature of operations management Question 1: Operations management role I would imagine that my role would be to ensure the profitable and reliable running of services. A bus service is a continuous service which runs to a schedule on a predetermined route. Our customers base their movements around our schedule and will expect us to adhere to those times. Figure 1 below is an indication of the simplified assumed structure of the company essay writers world reviews. I have not allowed for maintenance workshops and such like and have assumed that these functions are outsourced to suppliers.Figure [ 1 ]: Company structure The interactions between the departments are on a two way information route and feedback is gathered from the customer by the frontline staff. This could also include the drivers or ticket staff. The long term strategies of the company would be managed by the CEO and their senior team which would then be fed down to the operations manager for the day to day management to deliver these goals. Operations would see to the efficient running of the services and provide any early warning signs in their reports to the senior management.An interface with the customer would also be recommended by way of an occasional MBWA (management by walking about) style. This enables a personal interaction with both the staff and the customer. Close relations with suppliers should be kept with the finance side of the relationship being managed by the accounts department. Maintaining this degree of separation enables the ‘good cop bad cop’ kind of relations which can be of great benefit when bills come due. Question 2: Types of production The bus company is a transportation operation, as it transports people. It works as a mass services production process type.This is demonstrated in the fact that it has many customer transactions, involving limited contact time and little customisation (Nigel Slack, 2011). It does not store stock but you could argue that resources are stored in the form of bus spares and fuel should they have their own depot rather than outsourcing these items. The customers are queued in as much as the wait to be picked up on the route but they are not defined in a customer list or database. Question 3: Environmental factors As with any business there are more than one company vying for the limited number of consumers.Running busses you will have very little s cope to be better than your competition so you need to be very careful how you do it. There will be a couple main reasons why your customer chooses you which will be price, route, condition of vehicle and convenience. Breaking the four task environments down and assuming that there is a counter to each of the factors, we can reduce the impact as follows: Competitors: You could be cheaper or more regular than the competition, perhaps have newer buses which don’t smoke so badly as the others.Try to offer services on the routes which the competitors would struggle to compete on. Customers: The customer is king (or Queen). The most effective way to encourage New Zealand customers is by price. Kiwis love a bargain (Edmunds, 2012). Be it the one day special or concessions for demographic or regular users. But your price will not matter if the route is in the wrong place so location is a major factor when looking for the target customer. I’d probably hit high density student areas, they have low income and require transport regularly.Suppliers: The suppliers in this case would be our vehicle manufacturers, stationary suppliers and most probably land to operate from. You can enter into long term contracts with the suppliers and bulk order to reduce costs. But as with every business we are our suppliers’ customer so shop around. The only restraint is location. Buses are easy to buy direct from Japan with parts sourced just as easily. Suppliers will cause your variable costs to change and as such will have a greater impact on your margin which needs to be passed on to your customer.Building good solid relationships is imperative. Labour market: â€Å"The central bank expects unemployment of 7. 1 percent in the March 2013 year, falling to 5. 9 percent in 2014 and 4. 9 percent in 2015, according to forecasts in the MPS. That's more pessimistic than the 6. 4 percent, 5. 3 percent and 4. 9 percent forecasts in September† (BusinessDesk. co. nz, 20 12). With unemployment predicted to be falling and the labour market choosing to head to Australia in droves it makes the pickings slim.A business like the bus company will require skilled trades people to service the busses unless it out sources this and clerical people to administer the day to day operations. This is on top of the drivers and management team. Labour is a large cost for the company and retention is a big cost reducer, by keeping training and trained staff within the organisation. I fly to PNG where I work on a mine site, every time I get into a conversation with the bus driver taking me between international and domestic they ask if I can get them a job as a driver on the mine site.Question 4: Strategic options [case provided] Case question 1 (customers) Currently the customer base for HollyRock is teens and school aged youths. They have been referred to in the article as â€Å"Young people†. There may be some parents who also attend the restaurant but I wou ld assume from the way the article reads this would be in accompaniment of younger people. Case question 2 (competitors) From the article we can see that there are two possible current competitors in the area.These are the pizzeria which serves similar food to HolyRock in as much as Pizza and Robb’s restaurant which opens Friday evenings also. Although neither of these are competing for the same demographic as HolyRocks but they do have similarities in goods and services. It is also mentioned in the article that fast food chains had had difficulty in the past gaining approval to operate but, in time these may be able to move into the area. Case question 3 (strategic decisions) To fully answer this question we should look at the details for each component: 1.Structural. a. Location: Large old house in the middle of a retail area 15mins walk from the schools. b. Capacity: Ample parking and facility to seat 75. c. Technology: Low to mid technology level. 2. Infrastructure d. Wor k-force: 3 staff, cook, counter staff e. Quality Management: Nothing is mentioned regarding the Quality Management but I would assume this would be handled on a customer feedback system. f. Organisation design: A flat structure with an owner manager. Compact enough to manage easily and able to adapt to its target audience easily. . Policies and procedures: There was no mention of policies. Procedures are simple with food orders being taken with the issue of a number, empties and waste is collected on a continuous service system. Events seem to managed by the customer with a board in place for bands to volunteer to play. The initial concept was for the local young people to have somewhere safe to be able to gather and ‘Hang out’. The structure of the business would support the initial concept in that it is simple to manage and adapt to the needs of the client.It has furniture that is moveable to accommodate the groups at the time and the venue offers enough space to cate r for the needs of the customer. If the organisation were to grow past the current system then other changes would need to be brought into place which would then mean tighter management would be needed which would most likely mean a change in infrastructure. I would therefore say that the decisions do support each other and that of the overall strategy of HolyRocks. Case question 4 (expansion issues)The proposed enhancements would step completely outside of the current company structure. Although the base idea is similar in so much as it is a supply of food to customers the demographic is vastly separated. Some of the issues to consider are as follows: * Direct completion with Robb’s restaurant. An already well-established lunch and breakfast coffee time shop. * Is the location right for the stay at home mum? We note that it’s close to the high school, but there is no mention of other facilities which would attract the new client base. * Interior decor.Do rock posters and picnic tables attract stay at home mums looking for a coffee, a chat and some finger food? * With younger children coming onto the premises are there implications to the high school kids being turned off the idea of it being a ‘Hang out’? * Suppliers for the different food types will possibly differ, so more contracts need to be administered and accounts. * Extra equipment will be needed for coffee production and the storage and display of finger foods. As these are generally uncooked foods they need to be stored separately from the other food types.Different skills/personalities of staff required. Although there may be more intricate details regarding food, health and hygiene legislation the main points to consider are the local competition and the site suitability for the operation. It may be worth considering the option but at another location and sponsoring the new location with some brand attachment. Part B: Quality management Question 5: Measures of quality Us ing the table system as shown in the set text, the quality characteristics which we can measure would be the following: Quality characteristic| Variable| Attribute|Functionality| Number of meals served| Was the food acceptable| Appearance| Number of seats and layout| Were they clean in a timely manner| Reliability| Bands playing or meals delivered on time| Were there any complaints| Durability| Is the venue keeping up with the times| Are the trends of the young people being followed| Recovery| Meals rectified or bands removed| Did the customer feel the staff acted accordingly and timely| Contact| The extent that customers feel well treated by staff (1 to 5 scale)| Did the customers feel that the staff were helpful (yes or no)| Table [ 1 ]: Quality characteristic measurementsWe could easily apply functionality, appearance and contact to this business with contact being our quantitative measure. Functionality would be measured on the number of meals served against the number returned due to poor quality. Appearance would be a general measure by the management as to the tidiness of the venue throughout the shift. Contact could be measured through a quick and easy 2 question tick slip with the customer at the end of their visit. This could be a voluntary measure as people with high opinions are certain to leave feedback if it is made easy for them. Question 6: Types of quality managementThere are a range of available approaches such as TQM, Six Sigma and ISO 9000. Briefly each of the systems are as follows. Total Quality Management (TQM) is a comprehensive and structured approach to organizational management that seeks to improve the quality of products and services through ongoing refinements in response to continuous feedback. TQM requirements may be defined separately for a particular organization or may be in adherence to established standards. TQM can be applied to any type of organization; it originated in the manufacturing sector and has since been adapted for use in almost every type of organization, TQM is based on uality management from the customer's point of view (Rouse, Total-Quality-Management, 2005). Six Sigma is a management philosophy developed by Motorola that emphasizes setting extremely high objectives, collecting data, and analyzing results to a fine degree as a way to reduce defects in products and services. The Greek letter sigma is sometimes used to denote variation from a standard. The philosophy behind Six Sigma is that if you measure how many defects are in a process, you can figure out how to systematically eliminate them and get as close to perfection as possible.In order for a company to achieve Six Sigma, it cannot produce more than 3. 4 defects per million opportunities, where an opportunity is defined as a chance for nonconformance (Rouse, Six-Sigma, 2006). ISO 9000 is a series of standards, developed and published by the International Organization for Standardization (ISO), that define, establish, and mainta in an effective quality assurance system for manufacturing and service industries. The ISO 9000 standard is the most widely known and has perhaps had the most impact of the 13,000 standards published by the ISO.It serves many different industries and organizations as a guide to quality products, service, and management (Rouse, ISO-9000, 2005). From the three approaches above only two would lend themselves to our diner environment, these are the TQM and the ISO-9000 approaches. The Six Sigma philosophy is extremely complex to implement and can take years to show any real savings from a financial perspective. It is also not appropriate to our scenario as it better suits mass production or production line businesses. Of the two which are left I would use the TQM approach.It has a far better management system and would suit this small close knit workforce. The customer feedback would be available as to monitor the results and give indicators to the improvement strategy. The ISO-9000 sys tem is a more formal and managerially implemented system which would detract from the empowerment of the employees in this case, although there may well be some standards within the ISO-9000 that could be used in the TQM structure. Works Cited BusinessDesk. co. nz. (2012, December 6). NZ official unemployment rate overstates labour market woes, RBNZ says. Retrieved December 10, 2012, from www. sharechat. co. nz:

Mayans, Incas, and Aztecs

The Three Great American Cultures Central and South America is said to have been first discovered in the late fifteenth century; however, to say that the land before this time was unknown to all of humanity would be a fallacy and a great insult to the three great ancient cultures that ruled before their European conquest. The Aztecs, Incas, and Mayans were three distinct groups of people that thrived in the Americas prior to their â€Å"discovery† and all have a diversely rich background full of people, tradition, and culture. Recorded Aztecan history begins at the start of the twelfth century when the Aztec people first moved out in search of a new homeland. In 1325 they founded their new home with the creation of Tenochtitlan, a large city which is now the location of common-day Mexico City. The life of the Aztec people was multifaceted – filled with school systems, laws, clothing fashions, and traditional food. They had different scholastic buildings in place for children depending on their economic and noble rank among the people. Noble children would attend a school called a calmecac that would teach them history, religion, and the ways to govern. Meanwhile, the common children could go to a telpochacalli where they would learn aspects of war and trade work, but if a child showed enough promise and intelligence he or she could be sent up to one of the calmecacs to prepare for a higher future career. Crime and punishment was a severe topic for Aztecs; the breaking of many of their laws resulted immediately in death, some of which included: adultery, treason, theft, drunkenness, and even cutting down a living tree. Interestingly as well, if a commoner were to wear cotton clothing (something reserved only for nobility) they too would be put to death. Nobles dressed most lavishly among their people, opting for the brightest colors, and often used bird feathers to make headdresses that indicate their high status. The staple food for the Aztecs was corn. They also ate tomatoes, avocadoes, and tamales. Aztecs ruled for hundreds of years up until their peak in 1502 under their ruler Moctezuma II. The Spanish first arrived in 1519 with the conquistador Hernando Cortez, and by 1522 all the Aztecs once celebrated in Tenochtitlan was destroyed. Toward the south during the same time as the Aztecan people, the Incas were also in their peak from 1200 until 1535. They lived in what is now Peru and Chile, and before their fall had massed the largest Native American society. Part of the reasoning behind why the Incas became such a large tribe comes from their dominance in battle and their desire to conquer the neighboring tribes. During their peak, the Incan army had over forty thousand troops, patrolling in their lands. Living in the Andes mountain range also made for some interesting architecture. The Incas made large fortresses on the sides of steep mountains in order to protect their people and also see enemies if they were attacking from afar. Arranged as they were on the sides of mountains, Incan cities lead themselves to be hierarchically and religiously symbolic. The tallest point of their cities were reserved for religious practices, often in adoration for their sun god Along with their buildings, the Incas had advanced drainage systems used for irrigation to grow many of the crops the Aztecs did such as tomatoes, corn, cocoa, and cotton. Sadly the Incans shared more with the Aztecs than just their mutual crops; in 1535 they too were conquered by Spanish forces. While the Aztecs and Incas had much in common, perhaps the most different of the three great American societies were the Mayans found in the southern tip of common day Mexico and Guatemala. Unlike their neighbors to the north and south, the Mayans did not govern its people under a single ruler. Instead, the Mayans were comprised of smaller local city-states that ruled independently of one another. Each had its own ruler that was believed to be a descendant of the gods. But while they were independently ruled, the city-states all shared a common written language, religious beliefs, and a calendar system. The Mayans are the only known Native American culture that developed a written language, of which there are four existing books along with countless murals and wall writings. Much like the Aztecs and Incas, the Mayans practiced human sacrifices. Because they believed that their nobility were decedents of the gods, it was customary for a city-state’s ruler to partake in ritual bloodletting along with sacrificing rival neighboring nobles. They also followed their ritual calendar that was comprised of a thirteen month and twenty day cycle. It marked the passing of planets, stars, and allowed the people to know when the proper time was to plant and harvest. Perhaps these calendars helped them predict other things as well because unlike the Aztecs and Incas, the Mayans were never conquered by Spain because of their mysterious disappearance around the sixteenth century. Works Cited The Ancient Aztecs. Think Quest. 1999. Web. 1 February 2010. Criscenzo, Jeeni. The Maya. Jaguar Sun. 2000. Web. 1 February 2010. Inca. Minnesota State University. Web. 1 February 2010.