Physical Activity by Far Provides the Greatest Demand for Energy Essay Example for Free

Physical Activity by Far Provides the Greatest Demand for Energy Essay Physical activity by far provides the greatest demand for energy. Discuss how the intensity and duration of the exercise period and the relative contributions of the body’s means for energy transfer affect performance. In your answer mention availability of O2, food fuels used, energy threshold points, enzyme control and how the fitness of the participant affect performance. 20 marks Intensity is how hard you work for and duration is the length of time you exercise for. The energy continuum is used to show how the energy systems interact, to provide energy for the resynthesis of ATP and highlights the predominance of each of the 3 energy systems related to duration and intensity of exercise. When we look at high intensity and short duration such as 100m sprinting or 1500m we say the exercise intensity is anaerobic. This is because it takes place without the presence of oxygen. This type of exercise will use ATP/PC and LA systems will be predominant systems. A threshold represents the point at which one energy system is over by another as predominant energy systems to provide the energy to resynthesis ATP. The ATP/PC also known as the alactic system has a duration of 3-10 seconds during high intensity activities. It takes place in the sarcoplasm of the muscle cell and produces 1ATP molecule with aid of the enzyme Creatine Kinase. This is why in activities such as the 100m sprint it is predominant as it is a short duration with high intensity. The Lactic acid system uses glucose as the energy source to produce ATP from ADT and Pi, through various processes (phosphorlation dehydration and cleavage). The whole system provides 2ATP molecules with the aid of the enzyme PFK, this system also takes place in the sacroplasm of the muscle cell. This system has a maximum duration of 3 minutes, as during this process pyruvate is produced eventually leading to a build up of lactic acid. Therefore this system is most predominant during activities such as the 1500m running. During the higher intensisty exercise, lactate production will start to accumulate above resting levels and this is termed the ‘lactate threshold’. When blood lactate levels reach 4mmol/l the exercise intensity is referred to as ‘ the onset of blood lactate accumulation’ (OBLA). At this point the production of lactate has exceeded the removal rate. OBLA will continue to increase if exercise intensity remains the same/ increases eventually causing muscle fatigue. During these 2 systems it is important to allow recovery time. This is because if OBLA is exceeded. The acidity of the blood rises. This will cause efficiency of enzymes to decrease and may even cause them to denature. If this were to occur there would be a decrease in break down of energy stores and rate at which the enzymes used of the resysnthes of ATP would also slow down. This would lead to a lack of energy and in turn lead to muscle fatigue. Enzyme control is therefore important as a decrease in blood pH leads to a decrease in performance due to the inhibition of enzymes. To uses these energy systems require the uses of carbohydrates as their food fuel. As a result lack of carbohydrate stores will lead to earlier on set of fatigue therefore decreasing the duration of time that you can continue to work at a high intensity. Training is used to delay the onset of OBLA; therefore the fitter you are the later the onset of fatigue. This will therefore enable you to train harder for longer. When considering medium to low intensity activities with long duration such as marathon running, we say the exercise intensity is aerobic as it is done in the presence of oxygen. The predominant energy system will be aerobic system. This system has three sub systems; Aerobic glycolisis, kerb cycle and electron transport chain. Glycolisis involves the phosphoration of glucose (which comes from carbohydrate stores) which makes the its more reactive. The phosphate molecules come from the conversion of ATP to ADP. During the 7 steps with in glycolisis a total of 2 ATP molecules we used and 4 produced with pyruvate as the by-product. During the kerb cycle Co enzyme A is used to stimulate the reaction between the reaction pyruvate to produce 2ATP molecules and the by-products carbon dioxide and hydrogen. This reaction takes place in the matrix of the cell. Finally the electron transport chain which uses the enzyme ATPsynthase. In the respiratory chain the hydrogen atoms from NADH gradually release all their energy to form ATP. In total the aerobic system produces 34molecules of ATP and has a duration of grater than 3 mins. This is the type of system that would be used for marathon running. When exercise intensity reaches a point that anaerobic energy systems cannot supply energy quick enough, it has to use the lactic acid system to continue to provide energy for the resysnthesis of ATP. During the aerobic system availability of oxygen need to be high otherwise the performer will not bale to maintain the same intensity for a long duration. Many athletes train at altitude for endurance events. This is because altitude training allows the body to naturally increase the number of red blood cells available in the blood. It must do this in order to supply working muscles with enough oxygen as the percentage of oxygen in the air at altitude is lower. This adaption will remain when returning to sea level. For this system to work efficiently it requires the both carbohydrate stores and fat stores. Carbohydrates are used first as they are easier to use. However with training your, you can make your body use fat stores earlier. This will have an advantage for long distance and endurance athletes as it allows them to train for a longer duration of time. Enzyme control should remain constant as there is little production of lactic acid as the Aerobic energy system is predomaniant. In conclusion there is never a point at which one energy system is being used, only points where on is more prominent than another. The energy continuum shows how the ratio of energy systems in use can vary between activates. It is also important to remember that energy system can only work efficiently if the have the correct availability to oxygen, the correct food stores, energy control is maintained and good fitness levels are maintained.

Overview Of Cooling System Engineering Essay

Overview Of Cooling System Engineering Essay In order to reducing fuel consumption and meet the emission standards, many improvements has been made. The examples of the improvements are combustion strategies, fuel injection system, exhaust emission and fuel quality[1]. There are four possible sources of atmospheric pollution from the automobile. Without emission controls, a carburetor and fuel tank emits vapors, the crankcase emits blowby gases and the tailpipe emits exhaust gases that contain pollutants. The main regulated pollutant in engine exhaust are nitrogen oxides (NOx), carbon monoxide (CO), unburned hydrocarbon (HC) and smoke[2]. These air pollutants are harmful to human beings as well as plants and animals. The law now requires automotive manufacturers to install emission controls. Car that gives off excessive amount of air pollutants may not be allowed on the streets someday. Stronger laws limiting automotive air pollution and mandatory inspection and maintenance has been proposed. These laws are part of the government policy that cars must contribute as little as possible to the problem of air pollution. Each car already have three major systems for controlling pollutants from these sources that is positive crankcase ventilation (PVC), evaporative emission control and exhaust emission control. But in this study we want to focus more on engine cooling system and its effects to the emission reduction, fuel consumption and engine performance. Now, we will through about the components of engine cooling system and its functions. Engine cooling system is a system that responsible for cooling the engine by releasing heat through the cooling fins so that the carà ¢Ã¢â€š ¬Ã¢â€ž ¢s engine is not too hot or not too cold. This system helps to bring the engine up at to normal operating temperatures as quickly as possible and maintain the operating temperature for efficient function of the car engine. It is very important to keep the engine at its most operating temperature at all speeds and operating conditions. Burning fuel in the engine produces heat. Some of the heat must be taken away before it damages the engine parts. This is one of the jobs that performed by the cooling system. If the engine temperature is too low, fuel consumption will rise and if the temperature is too hot for too long, the engine will overheat. 1.2 TYPES OF COOLING SYSTEM There are two types of car cooling system which is the air cooling system and liquid cooling system. Air cooling system is a system that uses air as a cooling agent. It is commonly used in single cylinder engines such as motorcycles while liquid cooling system is known as the radiator system. It a system that uses liquid as a cooling agent and is used in a multi-cylinder engine such as cars and trucks. Radiator is the crucial components in the car cooling system. It ensures the engine is not overheating. Figure 1.1 : Cooling System Components [12] 1.3 COMPONENTS OF COOLING SYSTEM 1.3.1 WATER JACKET For operation of the cooling systems, it uses five basic parts or components to do the job in controlling the engine temperature that is water jackets, water pump, thermostat, radiator and fan. Water jackets are open spaces between the cylinder walls and the outside shell of the block and head. Coolant from the water pump flows first through the block water jackets. Then, the coolant flows up through the cylinder head water jackets and back to the radiator. 1.3.2 WATER PUMP Water pump usually known as impeller pumps. It is attached to the front of the engine and are driven by a belt from crankshaft pulley. The pump circulates as much as 28 390 L of coolant an hour. As the impeller rotates, the curved blades draw coolant from the bottom of the radiator. It forces the coolant from the pump outlet to the water jackets. The impeller shaft is supported on sealed bearings which never need lubrication. The seals prevent the coolant from leaking past the bearings. 1.3.3 RADIATOR Radiator is a heat exchanger that removes heat from engine coolant that passing through it. The heat transfer from the hot coolant to the cooler outside air. It has three main parts that is radiator core, inlet and outlet tanks. The core consists of set of tubes and set of fins that attached to the tubes. Figure 1.2 : Coolant Flow Inside Engine Cooling System [12]C:UsersFaisal Mamat.FaisalMamat-PCDesktopCapture.PNG 1.3.4 THERMOSTAT For thermostat, it is a heat operated valve that regulates the coolant temperatures. It does this by controlling the coolant flow from the engine to the radiator. The thermostat is in the coolant passage between the cylinder head and the radiator. The valve in thermostat stay open and close as coolant temperature changes. As long as the coolant temperature is below the thermostat set point, the thermostat remains closed. Once the temperature arrives at the set point, the thermostat starts to open, sending heated coolant through the radiator. The radiator then cools the heated engine coolant and the water pump forces the coolant back through the engine. The passage to the radiator is closed when the engine is cold so the engine can warms up more quickly. Engine heat stays in the engine instead of being carried to the radiator. Figure 1.3 : Closed Position of Thermostat [12] Figure 1.4 : Open Position of Thermostat [12] 1.3.5 ELECTRIC FAN An electric fan is turned on by thermostatic switch only when needed. For example, it turns on when the coolant temperature reach 93 °C and turn off back the fan if the coolant drops below this temperature. But on vehicles with air conditioning, turning on the air conditioner bypass the thermostatic switch. The fans run all the time when air conditioner is on. The fan is controlled by electronic control module (ECM) in many vehicles with an electronic engine control system. 1.4 PROPERTIES OF COOLANT 1.4.1 TAP WATER Tap water is potable water supplied to a tap inside the household or workplace. The application of technologies involved in providing clean water to homes, businesses and public buildings is a major subfield of sanitary engineering. Specific chemical compounds are often added to tap water during the treatment process to adjust the pH or remove contaminants, as well as chlorine to kill biological toxins. The use of tap water adversely affect the car cooling system. Tap water contains magnesium and calcium ions that will form the yellow precipitate (rust) when the water becomes hot. The yellow precipitate will be attached to the car engine after long time period and this will reduce the absorption of heat from the engine. If this rust become denser, it can interfere the passage of cooling liquid in the car cooling system. 1.4.2 ETHYLENE GLYCOL (EG) Ethylene glycol is an organic compound widely used as an automotive antifreeze and a precursor to polymers. In its pure form, it is an odorless, colorless, syrupy, sweet-tasting liquid. Ethylene glycol is toxic, and ingestion can result in death. Ethylene glycol is produced from ethylene via the intermediate ethylene oxide. The major use of ethylene glycol is as a medium for convective heat transfer. For example, automobiles and liquid cooled computers. Pure ethylene glycol has a specific heat capacity about one half that of water. So, while providing freeze protection and an increased boiling point, ethylene glycol lowers the specific heat capacity of water mixtures relative to pure water. A 50/50 mix by mass has a specific heat capacity of about 0.75 BTU/lb F, thus requiring increased flow rates in same system comparisons with water. 1.5 FUEL Gasoline is a transparent, petroleum derived liquid that is used primarily as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. Some gasoline also contain ethanol as an alternative fuel. A good gasoline quality should have : Proper volatility, which determines how easily the gasoline vaporizes. Resistance to spark knock or detonation. Oxidation inhibitors, which prevent formation of gum in the fuel system. Antirust agents, which prevent rusting of metal parts in the fuel system. Detergents, which keep help keep the carburetor or fuel injectors clean. Dye for identification, such as red eye which gives leaded gasoline a rust or orange colour. 1.5.1 VOLATILITY Volatility is the ease with which a gasoline vaporizes. Gasoline must vaporize quickly after it is mixed with air in the throttle body or intake manifold. Otherwise, drops of liquid gasoline enter the cylinder walls. This increases wear of the cylinder walls, pistons and rings. Gasoline that does not vaporize will not burn. It leaves the cylinder in the exhaust gas and pollutes the air. This wastes gasoline and reduces fuel economy. Volatility determines how quickly a gasoline can vaporizes. A high volatility gasoline can vaporizes quickly while a low volatility gasoline vaporizes slowly. Gasoline must have the right volatility for the climate in which it is used. 1.5.2 ANTIKNOCK QUALITY Antiknock is known as octane rating. It measure the gasoline ability to resist knock during combustion. The higher the octane rating, the greater the engines resistance to knock. The knocking in your engine occurs when the air fuel mixture detonates prematurely. Since it is the gasoline vapor that ignites, the air fuel mixture must be correct to burn smoothly. Some of the problems associated with knock are overheating of engine parts such as valves, pistons and spark plugs. 1.6 EMISSION Then we will go for the explanation about the combustion in the engine and how it resulting emission. Automotive fuels such as gasoline are made mostly of two elements that hydrogen and carbon. They have chemical symbols H and C. This type of fuel is hydrocarbon (HC). During complete combustion in the engine, these two elements unite with other element, the gas oxygen. Oxygen, usually in the form of free oxygen (O2), makes up about 20 percent of the earth atmosphere. This is the air that we breathe. During combustion process, each atom of oxygen will unites with two hydrogen atoms. Each carbon atom unites with two oxygen atoms. Oxygen uniting with hydrogen produces water (H2O). Carbon uniting with oxygen produces gas carbon dioxide (CO2). During combustion, the burning of air fuel mixture in the engine cylinder may reach 2200oC or higher. This high temperature produces pressure in the engine that makes it run and produces power. With perfect combustion, all the hydrogen and carbon in gasoline would unite with the oxygen. The exhaust would contain only harmless H2O and CO2. But combustion is not perfect in the engine. Some of the gasoline (HC) does not burn. Also, some of it only partly burns. This produces carbon monoxide (CO). This lack of oxygen prevents the formation of carbon dioxide. The unburned gasoline and partly burned gasoline (CO) exit from the engine through the tailpipe. Once in the air, it will cause atmospheric pollution. Another group of atmospheric pollutants th e engine is nitrogen oxide (NOx). About 80 percent of the atmosphere is gas nitrogen (N). High temperatures in the combustion chamber cause some of the nitrogen and oxygen to unite and form nitrogen oxide (NOx). 1.7 PROBLEM STATEMENT Nowadays the rate of fuel consumption currently going on throughout the world is quite alarming. Fuel consumption and emission rates are off the chart. This will give negative impact to the environment and increase the pollution rate. Basically the power to move a motor vehicle comes from the burning of air fuel mixture in an engine. Air pollutants from vehicles comes from the products of this combustion process. With perfect combustion process, the emission would be water (H2O) and carbon dioxide (CO2). Both of these are harmless gases. But combustion is not perfect in an engine. Some of the gasoline (HC) does not burn and some of it only partly burns. This produces carbon monoxide (CO) and nitrogen oxide (NOx). Both of these gases are air pollutants and breathing polluted air is very bad for human and animals. Then the demand for low cost car from customer that has good performance with low fuel consumption and emission also increase. Usually car that has good performance will have high fuel consumption and emission rate. In order to solve these problems, the study about engine cooling system and its effects towards engine performance, fuel consumption and emission reduction will be conducted. Two types of liquid cooling such as tap water and ethylene glycol will be used and its temperature will be checked in order to investigate the influenced to these 3 outputs. 1.8 OBJECTIVES OF THE RESEARCH To study the effect of engine cooling system and its components to the engine performance, fuel consumption and emission. To investigate the influence of percentage of ethylene glycol in the coolant and coolant temperature set point to the engine performance, fuel usage and emission rate. 1.9 SCOPE OF THE RESEARCH The scope of this researched is mainly about the variations percentage of coolant (ethylene glycol) mixed with water and its temperature effects towards engine performance, fuel consumption and emission. The percentage that will be used for ethylene glycol are 30%, 50% and 70%. For every percentage, the coolant temperature set point will be controlled using two kind of thermostat with temperature set point 80oC and 100oC. The increasing temperature in cylinder block by increasing the coolant temperature results in fuel savings and emission reduction. Boiling Point Ethylene Glycol solution (% by volume) 0 10 20 30 40 50 60 70 80 90 100 Temperature F 212 214 216 220 220 225 232 245 260 288 386 C 100 101.1 102.2 104.4 104.4 107.2 111.1 118 127 142 197 Table 1.1 : Boiling Point of Ethylene Glycol Solutions [13] Car model that will be used is Perodua Kancil 660cc (4 stroke and 3 cylinder). Then for the fuel, petrol RON 95 will be used. Three test will be conducted in investigate the engine performance, fuel consumption and emission rate. The test for engine performance is dynamometer test. A dynamometer is a device that is used for measuring force, moment of force (torque), and power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed (RPM). For the fuel consumption, we will conducted a fuel test by using a new tank provided by automotive lab. Unit to measure the fuel test is in liter/km. To measuring the emission rate, gas analyzer is used and the measurement unit is in concentration of gas which is parts per million (ppm). 1.10 SIGNIFICANT OF THE RESEARCH This study will give better understanding and exposure about the operation in the engine cooling system and how it will effects the engine performance, fuel consumption and emission. Reducing the fuel expenses by car users as the rate of fuel consumption reduced. The expected output to reducing the emission will result in increased the air quality that is harmful to humans. It also will lead in reducing the air pollution rate and provide more safer environment for people. The low cost car with good performance and low on fuel and emission rate also will be develop. 2.0 LITERATURE REVIEW 2.1 COOLING SYSTEM OPERATION A huge amount of heat is generated in the internal combustion engines. It is created when the air fuel mixture is ignited inside the combustion chamber. The explosion that occur will causes the piston to be forced down inside the cylinder, levering the connecting rods and turning the crankshaft. The temperatures of the metal parts around the cylinder can exceed 2500oC. To prevent the components such as engine oil, cylinder walls, pistons, and valves from overheating, it is necessary to effectively dispose the heat. Approximately 30% of heat in the combustion process is lost into the atmosphere through the exhaust system, 35% is converted into power to drive the vehicle and the remaining 35% lost as heat through the cylinder walls [9]. Water pump is attached at the front of the engine and driven by a belt from crankshaft pulley. The impeller rotates and the curved blades draw liquid cooling from the bottom of the radiator and force it to flow through pump outlets and water jackets. The liquid cooling will flow through passageways in the engine block and cylinder head. Temperature in the combustion chamber can around 2500oC, so cooling around this area is critical to prevent overheat. The areas around exhaust valve are especially crucial and almost all space inside the cylinder head around the valve that is not needed for structure filled with coolant. But when the engine is still cold, thermostat still close and the liquid cooling is circulated back to the engine. By closing the passage through radiator when engine is cold, the engine warms up more quickly. Engine heat stays in the engine instead of being carried to the radiator. This shortens warms up time, wastes less fuel and reduces exhaust emissions [3]. After engine already heat up, the thermostat keeps the engine running at a higher temperature than it would without a thermostat. The higher operating temperature improves engines efficiency and reduces exhaust emissions [3]. 2.1.1 EFFECT OF RADIATOR A radiator usually known as heat exchanger. The hot coolant that flows through it will transfer the heat by the air blown through the aluminium fins by fan. Nowadays modern cars use aluminium radiators. It usually made by brazing thin aluminium fins to flattened aluminium tubes. Flow of the coolant is from inlet to the outlet through many tubes that mounted in parallel arrangement. These fins will conduct the heat from the coolant inside the tubes and transfer it through the air that flowing through the radiator.[1] A type of fin is inserted into the tube called turbulator. Its function is to increases the turbulence of the fluid flowing through the tubes. If the flowing of the fluid through the tubes is smooth, only the fluid that touching the tubes would be cool directly. The amount of heat transferred from the fluid to the tubes depends on the difference in the temperature between the tube and the fluid touching it. Therefore, less heat will be transferred if the fluid that is in contact with the tube cools down quickly. To prevent that, turbulence is created inside the tube and all of fluid mixes together. Keeping the temperature of the fluid touching the tubes up so that more heat can be extracted and all of the fluid inside the tube is used effectively. 2.1.2 EFFECT OF RADIATOR FAN The function of radiator fan is to draw the air towards the radiator and helps to cool the hot coolant that flowing through the tubes. It usually has four or more blades that spin rapidly to provide sufficient air to that would cool the engine. The fan will be mounted between the radiator and the engine so that the air can easily flowing through the radiator. There are also additional fan in front of the radiator in some cars in order to draw more cool air to the engine especially when vehicle is not moving fast enough, very little cool air reaches the radiator and the engine is not cooled properly. 2.1.3 EFFECT OF PRESSURE CAP The radiator cap or also known as pressure cap actually increases the boiling point of your coolant by about 25oC. The cap is a pressure release valve and usually is set to 15 psi. When the coolant is placed under pressure, its boiling point will increase. As the engine running, the cooling system will be heated up and increase the pressure. The only place where the pressure can escape is at the pressure cap. Therefore, the setting of the spring on the cap determines the maximum pressure in the cooling system. If the pressure reaches 15 psi, it will push the valve open and allowing the coolant to escape from the cooling system. The flowing of the coolant is from overflow tube to into the bottom of the overflow tank. This kind of arrangement will keep air out of the system. After the radiator is already cools back down, a vacuum is created in the cooling system that pulls open another spring loaded valve while sucking the water back in from the bottom of the overflow tank to replace the water that was expelled. 2.1.4 EFFECT OF WATER PUMP Water pumps are impeller pumps. They attached to the front of the engine and driven by a belt from the crankshaft pulley. As the impeller rotates, the curved blades draw coolant from the bottom of the radiator[3]. The water pump only thrust to drive the circular flow of the coolant within the engine cooling system, so the inlet is the point of lowest pressure in the system and the exit point is the highest pressure. The pressure drops sharply at the inlet/outlet of the water pump during the operational of the water engines and this pressure drop will vary in proportion to the rotational speed. Water pumps in engines are prone to cavitation and air bubbles are likely to permeate in to antifreeze and will severely reducing the performance, reliability and service life of the engines[6]. Cavitation means the cavities or bubbles are forming in the liquid that have been are pumping. These cavities form at the low pressure or suction side of the pump. For the well design engine cooling sys tem, cavitation is less likely to take occur as the temperature of the coolant declines. But when the cavitation temperature is reached, the pressure of the water pumps drops abruptly and all the cooling system loses its functionality. 2.1.5 EFFECT OF THERMOSTAT The main function of the thermostat is to allow the engine to heat up quickly and keep it at its efficient temperature. It control this by regulating the amount of water that goes through the radiator. The coolant in the cooling system starts to initiate by picking up heat at the water jackets. In the coolant circuit, the pressure gradient exist and causing the hot coolant flows out from the engine to the radiator or to coolant bypass passage [2]. Once the temperatures of the coolant rises to 80oC, the thermostat starts to open. Different thermostat open at different temperatures and allowing fluid to flow through the radiator. The secret of the thermostat lies in the small cylinder located on the engine side of the device. Actually this cylinder is filled with wax that starts to melt at temperatures 80oC (depends on the thermostat). Then, a rod that is connected to the valve press into this wax. As the wax melts. It will expands and pushing the rod out of the cylinder and opening th e valve. 2.2 EFFECT OF COOLANT Coolant is the mixture of antifreeze and water in the cooling system. The commonly used antifreeze is Ethylene Glycol. This coolant will circulate through the cooling system. It will remove the waste heat from the engine and delivers the heat through the radiator hose to the radiator. It is not recommended to use only water as a liquid cooling because it would freeze if the temperature drop below 0oC. This would stop the circulation and the engine would overheat. As the water would expand 9% as it freezes, it would crack the cylinder block and head, split the radiator [3]. By controlling the engine cooling system in a flexible way as compare to the conventional cooling system, it will improve the fuel consumption rate of spark ignition (SI) engines [11]. It is known from the cold start research that the coolant and inlet charge temperature are key parameters to reduce pollutant emissions and guarantee smooth engine operation. Cold start experiment were performed with coolant temperatures of 15oC and 80oC. In the steady state operation reached after the start, the piston surface temperature was respectively 110oC and 150oC. The HC emissions were 25% lower and the NOx emissions 7% higher with the higher coolant temperature. It seems to indicate that there is an influence of the coolant temperature on the emissions through the cylinder wall temperatures [5]. In the search for greater fuel economy and reduced emission output, the engine cooling system is being targeted for further improvements to engine performance through its effects on engine frictional losses. Fuel economy improvements from the changes to the engine cooling system are derived mainly from reduced engine frictional losses with increased oil temperature by raising the engine operating temperature indirectly through the step increase in the coolant temperature. Hydrocarbon (HC) and carbon monoxide (CO) output are also shown to decrease with the increase in operating temperature [7]. There are also suggestion that higher cylinder block temperatures will reduce the frictional losses with the piston and ring pack and will lead to reducing fuel consumption [10]. But the increasing of operating temperature has a negative effect on nitrogen oxide (NOx) output as the formation of NOx in the combustion chamber can be highly sensitive to temperature changes [7]. There are some previous works in the engine cooling area focuses on to the fuel economy benefit to IC engines through the reduction engine frictional losses by raising the coolant temperature. As the coolant temperature increases, the cylinder block wall temperaturs also increases and will result in reducing the HC emissions [11]. It concentrates mainly on gasoline engines where oil temperature is relatively lower and the tailpipe emissions are HC and CO. Fuel efficiency improvements about 10% are achieved in part load conditions by raising coolant temperature [7]. METHODOLOGY 3.1 INTRODUCTION In this chapter, we will discuss about the procedures and entire activities to carry out in this whole project. The flow chart below will describe the steps that should be followed during this project. Basically there are 3 test that will be conducted that is dynamometer test, fuel test and emission test. 3.2 FLOW CHART Part Selection Select the type of liquid cooling and thermostat that will be used. Preparation and Setup Select the type of liquid cooling and thermostat that will be used. Run the experiment The experiment will be conducted to the conventional and modified cooling system. Emission Test Fuel Test Dynamometer Test Data Analysis TYPES OF METHODS 3.3.1 DYNAMOMETER TEST Dynamometer is actually a device use to measuring force, moment of force (torque) and power produced by an engine or motor. We can see the example from the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed (RPM). Nowadays dyno test become more easier to operate with the advance of the modern computer and produce more accurate results. A dyno that paired with the computer will display the power rating of a given machine as a figure below. C:UsersFaisal Mamat.FaisalMamat-PCDesktopdynamometer-test-2.1-800800.jpg Figure 3.1 : Example Graph of Dynamometer Test Actually dyno test is used for various applications but the most common one is automobile testing. Automobile manufacturers will measure the performance of a car or truck in order to market its power. Sports car will modified their vehicles with aftermarket parts in order to achieve higher power output and then run the dyno test to evaluate their modifications. Dyno tests can be run in a couple of different ways which is chassis and engine dyno. When running a chassis dyno test, the vehicle to be tested is driven onto the dyno platform that simulates resistance through the use of automated wheels. For an engine dyno test, the engine to be tested is mounted to the dyno device. These different methods produce different measurements such as brake horse power and torque from a chassis dyno and flywheel horse power and torque from an engine dyno. Power is often lost through the drive train of a vehicle so the brake measurement will typically less than the flywheel measurement. The model that will be used for dynamometer testing is Dynapack 3000. The components of Dynapack 3000 consists of computer, sensors hub adaptors controller and power absorption units. This test is a bit from other dyno test because of the elimination of the tire to roller interface on a conventional roller dyno. It eliminates this variable by using a hub adaptor that provides a direct coupling to our power absorption units. There will be no tire slip, no rolling resistance and no chance of the vehicle coming off from the dyno at high speeds. For the theory of operation. Firstly the hubs of the vehicle are directly attached to hydraulic pumps. A variable load can be applied with all of the potential holding power that hydraulic possess. Figure below show that the wheels are removed from the vehicle and the variable fit hub adaptors are bolted to the vehicle axle. The hub adaptor is then directly attached to a hydraulic absorption unit. C:UsersFaisal Mamat.FaisalMamat-PCDesktopdyno and gas analyser2t1nkVS-bVa9gQb37zp6LeNyhqyOJc4TfM-fDuqeDVw.jpgC:UsersFaisal Mamat.FaisalMamat-PCDesktopdyno and gas analyservIQiOZd6MQEKChUSE_EjDet0c_3AZX3Ykc63jQJyo1g.jpg Figure 3.2 : Hub adaptor bolted to vehicle Figure 3.3 : Monitor of Dynapack 3000 3.3.2 FUEL TEST For the fuel test, a new fuel tank is used to replace with the existing tank. The problem with the existing tank is the fuel consumption cannot be measured correctly. The new fuel tank will be connected using the hose from the fuel pump to the series of injectors at cylinder head. Gasoline or RON 95 will used in this fuel test. The example for the new fuel tank is shown in figure below and the fuel pump is already attached on top of it. C:UsersFaisal Mamat.FaisalMamat-PCDesktopdyno and gas analyser8EYHfSB7JGJ_i1gO_0dpJCrDuHDVK9bGh1xnPJzzuSQ.jpg Figure 3.4 : The new fuel tank The test will be conducted according to the gears and revolution per minutes (RPM) that already been set. It is done to control the speed of the engine to get the accurate result of the fuel consumption without affected by the changing of gear on each test. The RPM and gears can be referred in the table below. Gear RPM Distance (km) 1 3000 2 3000 3 3000 4 4000 Table 3.1 : RPM for each of the gear 3.3.3 EMISSION TEST Hydrocarbon (HC), carbon monoxide (CO) and nitrogen oxide (NOx) are measured in parts per million (ppm). For this emission test, the device that will be used is the gas analyzer 95/3. The gun of this device will be placed into the tailpipe to measure the exhaust rate. The data will be taken during the various RPM that already been set up which is 2000 rpm, 3000 rpm and 4000 rpm. The result of this test will be recorded in this device. C:UsersFaisal Mamat.FaisalMamat-PCDesktopdyno and gas analyservKBx3J-b1dLfHTA3MeaWYgo8LcKrPxDuaprQ5PBq-VY.jpg Figure 3.5 : Gas Analyzer 95/3 PROJECT SCHEDULE

Charlies Regret of Past Behaviors in Fitzgeralds Babylon Revisited :: Babylon Revisited Essays

Charlie's Regret of Past Behaviors in Fitzgerald's Babylon Revisited Charlie Wale's character seemed to get the raw end of the deal throughout the entire story. He was trying to redeem himself as a good father and a good citizen. He had many regrets of his past actions and behavior, especially those regarding his deceased wife, Helen. The events that occured during his visit to Paris, however, were detrimental to his intentions. His desire to have his daughter, Honoria, return with him to Prague, was sincere, and as a reader, I could almost feel his pain and disappointment at the disastorous end results. Marion's decision to not allow Honoria to return was merely based on Charlie's "past". Once his old acquaintances, Duncan Schaffer and Lorranine Quarrles, surfaced at the home of Linclon and Marion Peters, there was almost no chance of redemption. Marion could only see the "old" Charlie, and not the man who longed to care and provide for his daughter. Marion also seemed to hold a grudge against Charlie for the death of her sister, Helen. Charlie had begun many preparations to bring Honoria home with him. The hiring of a governess and the lease on a new apartment are just two examples of his attempt at trying to convince Marion and Licoln of his seriousness of resuming the responsibilty of being a parent. To be a father to Honoria, would also entail being a mother to her in some ways, due to the fact that Helen's death had been a part of the past Charlie was trying so hard to recover from.. Charlie's personal strentgh is shown by only having one drink a day, compared to the noted many drinks, and possibly other paraphernalia he may have encountered in his colorful past. At this point in his life, he

racism and prejudice Essay -- essays research papers

Racism and prejudice has been present in almost every civilization and society throughout history. Even though the world has progressed greatly in the last couple of decades, both socially and technologically, racism, hatred and prejudice still exists today, deeply embedded in old-fashioned, narrow-minded traditions and values. Racism is a case of ‘misplaced hate’ and ignorance, being not only discriminatory, but also seemingly foolish with disregard of all human commonsense. Why does racism still exist in today’s world? If it still occurs, has the world really progressed at all? Through extensive research methods and wide reading, it can be proven that racism is still present in the modern world. Racism is based on the belief that one’s culture is superior to that of others, and this racial superiority provides justification for discrimination. Racism begins with categorising by race, and therefore stereotyping particular cultures. A simple definition of prejudice given by St Thomas Aquinas states prejudice as â€Å"thinking ill of others without sufficient cause† (1. pg 21). Racism is a major issue in today’s society, affecting a large number of the world’s population and causing political and social turmoil. To evaluate the true meaning, effects and views concerning racism in today’s world, a number of literature sources were researched including novel, films, short stories, poetry, song lyrics, textbooks and magazine articles. â€Å"Black Like Me† written by John Howard Griffin is an excellently written novel, based on factual events experienced by the author himself. It is based in the 1950s, a time when racism was widespread throughout America. The basic outline of the story is the following of one man (Griffin) as he embarks on a journey that takes him to the ‘other side’. Griffin is a middle-aged white man, and decides to personally experience the life of a Negro. He achieves this by literally changing the pigmentation in his skin so that he is no longer white. Griffin moves to the deep southern states of America where he is subject to harsh racist treatment by the whites. By doing so, he experiences first hand the reality of racism and prejudice, almost to the point of disbelief. The story focuses on the lives of Negroes: restricted, brutal and harsh. â€Å"My skin was dark. That was sufficient reason for them to deny me those rights and freedoms without whi... ...wn comes under siege as racism rages within the community. The Klu Klux Klan is also featured in the film, a group that symbolizes hate. The eerie looking hoods in the film are a reminder of America’s dark past, and of current racist groups still present in society. Many of the characters in the film are stuck in old values and teachings, misplacing their hate towards the coloured. The film â€Å"Mississippi Burning† supports the hypothesis as it deals with society still living in the past and acting narrow-mindedly towards its fellow human beings. Within all of the texts mentioned, the theme of racism is present, just like in most of today’s societies. All of the researched sources deal with the effects of racism, the foolishness of it and the fact that it still exists in today’s modern and so-called advanced world. No matter how much social attitudes evolve, prejudice, hatred and racism will still exist within aspects of society, whether it be in the heart, in the mind or in the souls of those too ignorant to realize the damaging consequences. While technologically today’s world has advanced, if society cannot overcome issues such as racism and prejudice, it has not evolved at all.

Murder Must Advertise :: essays research papers

When advertising executive Victor Dean dies from a fall down the stairs at Pym's Publicity, Lord Peter Wimsey is asked to investigate. It seems that, before he died, Dean had begun a letter to Mr. Pym suggesting some very unethical dealings at the posh London ad agency. Wimsey goes undercover and discovers that Dean was part of the fast crowd at Pym's, a group taken to partying and doing drugs. Wimsey and his brother-in-law, Chief-Inspector Parker, rush to discover who is running London's cocaine trade and how Pym's fits into the picture--all before Wimsey's cover is blown. -------------------------------------------------------------------------------- Leserrezensionen Durchschnittliche Leserbewertung: Zahl der Rezensionen: 4 Eine Leserin oder ein Leser aus New York City, USA , 1. Dezember 1999 Bravo! Knock-out Mystery! I must preface this review by confessing a bias - I'm a huge fan of Dorothy Sayers and consider it a tragedy that she did not write more detective fiction. This is definitely one of the strongest entries in the Lord Peter Wimsey series, both for mystery and entertainment value. An interesting tactic used by Sayers is to point in the direction of the culprit about three-fourths of the way through the book and then lead the reader through the detection process that actually leads to his/her unmasking. We saw this used in "Unnatural Death", also in "Whose Body?" Surprisingly, the resulting lack of suspense at the end does not deter from the mystery at all as it is fascinating to see the patient unraveling of clues and pulling together of threads that lead to evidence against a killer. It is also a better reflection of what usually happens in reality, as opposed to a lot of detective fiction where the most unlikely person did it! While we all find whodunits interestin g, the reality is that the police and private eyes are usually smart enough to figure out the most likely candidate fairly early and thus narrow their investigations. In this book, the fun is added to by the setting in an ad agency. Sayers had worked in an ad agency at some point in her career and you can see that she really knows her stuff. The interplay between the various characters is very funny and surprisingly not dated in feel, considering the book was written 70 odd years ago! I found the cricket match scene to be the most fascinating part as well the sense the reader gets that with every page, the hangman's noose is slowly closing around the killer. Murder Must Advertise :: essays research papers When advertising executive Victor Dean dies from a fall down the stairs at Pym's Publicity, Lord Peter Wimsey is asked to investigate. It seems that, before he died, Dean had begun a letter to Mr. Pym suggesting some very unethical dealings at the posh London ad agency. Wimsey goes undercover and discovers that Dean was part of the fast crowd at Pym's, a group taken to partying and doing drugs. Wimsey and his brother-in-law, Chief-Inspector Parker, rush to discover who is running London's cocaine trade and how Pym's fits into the picture--all before Wimsey's cover is blown. -------------------------------------------------------------------------------- Leserrezensionen Durchschnittliche Leserbewertung: Zahl der Rezensionen: 4 Eine Leserin oder ein Leser aus New York City, USA , 1. Dezember 1999 Bravo! Knock-out Mystery! I must preface this review by confessing a bias - I'm a huge fan of Dorothy Sayers and consider it a tragedy that she did not write more detective fiction. This is definitely one of the strongest entries in the Lord Peter Wimsey series, both for mystery and entertainment value. An interesting tactic used by Sayers is to point in the direction of the culprit about three-fourths of the way through the book and then lead the reader through the detection process that actually leads to his/her unmasking. We saw this used in "Unnatural Death", also in "Whose Body?" Surprisingly, the resulting lack of suspense at the end does not deter from the mystery at all as it is fascinating to see the patient unraveling of clues and pulling together of threads that lead to evidence against a killer. It is also a better reflection of what usually happens in reality, as opposed to a lot of detective fiction where the most unlikely person did it! While we all find whodunits interestin g, the reality is that the police and private eyes are usually smart enough to figure out the most likely candidate fairly early and thus narrow their investigations. In this book, the fun is added to by the setting in an ad agency. Sayers had worked in an ad agency at some point in her career and you can see that she really knows her stuff. The interplay between the various characters is very funny and surprisingly not dated in feel, considering the book was written 70 odd years ago! I found the cricket match scene to be the most fascinating part as well the sense the reader gets that with every page, the hangman's noose is slowly closing around the killer.

A Personal Theory of Counseling: The Holmes Approach Essay

Perhaps nothing is as significant to the success of the therapeutic process and nothing represents the foundation of successful therapy more than one’s personal theory of counseling. All individuals in all aspects of life work from some belief system, perspective, or model of how the world works, how things are, and how things interact. Developing a deep understanding of one’s own personal theory leads to better decision-making with respect to the therapeutic process, including therapist approach and client interaction. Such an understanding also promotes a greater ability to intervene more effectively with clients whose values are in contrast to one’s own. Being aware of one’s own personal theory of the world and, subsequently, one’s view of counseling, also helps the therapist identify individual strengths and areas for improvement. The personal orientation of the therapist is a sum total of many influences such as interests, self-awareness, experience, values, and compassion for others, among many other things. Such influences have a direct impact on one’s personal theory of counseling. For instance, my Christian upbringing, experiences, and beliefs have a significant impact on my personal view of the world and others and, therefore, also on my theory of counseling. My religious beliefs and values coincide with some therapeutic approaches and not others. As clients will be most happy when the therapeutic approach is most in alignment with their own personal values, so the therapist will fill most rewarded and happiest approaching the therapeutic process from a foundation that is congruent with their own personal values. The same is true for one’s personal skills and temperament. The process of developing a personal theory of counseling is a bit like shopping for the best fitting clothes. One may find a suit jacket that fits best in an upscale designer clothing store, a shirt that fits best in a retail chain store, a pair of slacks that fit best in a seconds outlet, and a pair of shoes that fit best from a catalogue store. Likewise, one’s personal theory of counseling that fits best is often a synthesis of several different approaches. Despite finding such a fit, the therapist must remain aware of the fact that all theories work with some clients while no theory works with all clients. Such self-awareness enables the therapist to affirm that theories of counseling offer only a partial understanding of human behavior, thinking, growth, and healing and not a definitive or total one. For these reasons, a synthesis of different counseling theories offers a more effective approach. Yet despite such a synthesis or individual theory of counseling, the therapist is charged with the task of continuous, ongoing learning with respect to understanding and working with people. A comprehensive personal theory must deal with the truth that is at the base of the problem. This can be achieved by taking into account various components such as personality structure, motivation, human development, individual differences, health, illness, techniques, effectiveness and the biblical worldview which are all parts of a comprehensive counseling theory (Hawkins, 2006d). To be effective biblical counselors we must have the attitude of Crabb when he stated, â€Å"My overriding goal must be in every circumstance to respond biblically, to put the Lord first, to live in subjection to the father’s will as Christ did (Crabb, 1988, p. 20). † Counselors that get results take into consideration the whole person (e. g. mind, body, soul). Unlike secular counselors, the effective biblical counselor understands that if the counselee encounters a problem we must go back to the manufacturer, which is God who is the answer to the problem. My personal theory of counseling is, indeed, a synthesis of different influences and therapeutic approaches. Of these influence s and theories, the following are the foundation of my personal theory of counseling: Christianity, particularly the examples of the life of Jesus Christ and person-centered theory. For ease of use and future development purposes, I have labeled my personal theory of counseling the Holmes approach. Influences from various approaches form my worldview on people, behavior, thinking, growth, and healing. Within the Holmes approach to counseling, I find a form of modeling, interaction with others, and creation of an environment that most promotes growth and healing. In considering the development of a personal philosophy, several key areas are considered. First, a personal theory includes assumptions about human nature. Second, a theory addresses key concepts including personality development, learning theory, an explanation of health versus ill health, and the roles of behavior, cognition, and affect, among others. Third, therapeutic goals and objectives are considered. Fourth, a personal theory elucidates the therapeutic process which defines the role and function of the counselor, the therapeutic relationship, and the client’s experience. Finally, primary techniques and procedures are identified that are used to facilitate change. The following is an initial, sophomoric sense of my own developing personal theory. Assumptions About Human Nature The main component of my personal theory of counseling is the person-centered approach developed by Carl Rogers. This approach will be my main one for interaction with clients. The reason for person-centered theory driving my therapeutic approach is because its outlook or worldview toward individual function and interaction is most congruent with my own beliefs and values. Person-centered therapy is a humanistic therapy that focuses on individual existence and change (Corey, 2009; Leijssen, 2008; Stiles, Barkham, Mellor-Clark, & Connell, 2008; Wilkins & Gill, 2003; Ziegler, 2002). The principles of Carl Rogers’ work are founded on respect for others, demonstrated by treating everyone with empathy, honesty and giving them unconditional acceptance (Corey, 2009). Person-centered therapy makes the assumption that individuals have the natural or innate power to heal themselves (Corey, 2009). The person-centered or client-centered approach to therapy posits a client-therapist relationship geared toward encouraging these intrinsic healing abilities (Stiles et al. , 2008; Wilkins & Gill, 2003). The view that each individual has within him or her ability to grow and heal is congruent with my Christian belief that within our self is our power of strength through Christ. As 1 Chronicles 20: 10 expresses, â€Å"Wealth and honor come from you; you are the ruler of all things. In your hands are strength and power,† (NKJV). Through the reading Dr. Ronald Hawkins’ model for guiding the counseling process poses that man should be viewed as a set of five concentric circles (Hawkins, 2006). The first circle is the human spirit which portrays God but is inevitably sinful. The second circle is the soul, where the person’s feelings, thoughts, will, and conscience are included. The third is the person’s physical body. Lastly, he adds two more circles to demonstrate components or elements of influence affecting persons. One is labeled as temporal systems such as education, economy, government, society, church, friends, and family. The other is labeled as supernatural systems, mainly God, Satan, good angels, and fallen angels. Hawkins’ model focuses in on the actions of the individual. Key Concepts Genuineness, unconditional positive regard, and empathetic understanding are the main components of the stance modeled by the therapist toward the client in person-centered therapy (Leijssen, 2008). Rogers argued that these three elements in and of themselves are sufficient for promoting change and fuller functioning in clients. A main goal of the person-centered approach is to assist clients through exhibition of these aspects in coming to a fuller acceptance of self-worth (Corey, 2009; Wilkins & Gill, 2003; Ziegler, 2002). Unconditional positive regard and acceptance from the therapist promotes greater self-awareness and self-acceptance in clients (Corey, 2009). Therapy is the means by which clients will remove the personal barriers that constrain and restrict the natural power of self-growth and healing. The inherent worth of the individual forms the basis of the main ideas behind person-centered therapy, as well as Christianity (Adams, 2009; Leijssen, 2008; Reinert, Edwards, & Hendrix, 2009). The goal of accepting Christ into one’s life is similar to the goal of therapy in the person-centered approach; the need of the client for self-acceptance (Leijssen, 2008). As the goal of accepting Christ equates to being saved, a condition of worthiness, so the person-centered therapist is charged with the goal of seeking, in a non-directive manner, to assist the client in confronting feelings and beliefs that prevent the client from achieving congruence between such feelings and beliefs and self-image (Adams, 2009; Leijssen, 2008; Reinert et al. , 2009). The scripture tells us in Romans 15:1-3, â€Å"We then who are strong ought to bear with the scruples of the weak, and not to please ourselves. Let each of us please his neighbor for his good, leading to edification. For even Christ did not please Himself; but as it is written, ‘The reproaches of those who reproached You fell on Me’,† (NKJV). Our Lord and Savior wants our lives to be edified through one another. Holmes therapy, as with person-centered therapy, will enable those in the helping profession to care for our brothers and sisters in love, not by judging or trying to solve their problems, but by just being there to help carry the load and enable them to live much more freely. As with Jay Adams (1986), in this system the true goal of Christian counseling is sanctification through the power of the Holy Spirit. The change for which Christian counselors strive has a spiritual direction and their aim is to help people prosper in the right direction. All change toward God is good, and all change away from God is bad. Sanctification, change toward God is the goal of all Christian counseling,† (Adams, 1986, p. xiii). The fundamental goal of Holmes therapy is not necessar ily symptom relief. Rather, the therapy involves identifying and exploring mistaken goals and ineffective beliefs and values so that the client can make choices that are more congruent with their true self. In exploring these issues, the client will gain a more meaningful sense of who they are and come to accept that they have the freedom to control their life, but with that freedom comes the responsibility of the choices that they make. By accepting this responsibility, the client will be able to develop a more accurate identity which gives greater meaningfulness to their life and develop the tools to identify and fulfill their needs defined by this ‘new, developing’ self. Therapeutic change occurs for the client in stages as they become more and more independent from the therapist. The healed client will be one who lives without the guise of pretense and who can accurately perceive his or her needs, opportunities, and self-worth in the external environment. As individuals can actualize their innate potentiality through a relationship with Christ, the Holmes therapist assists the client in recognizing their innate potentiality. Growth, healing, and enrichment of life are all possible due to this innate ability. The golden rule of Christian faith is to do unto others as you would have others do unto you. Such interaction in person-centered therapy stems from the creation of an environment of unconditional positive regard. As one must willingly come to Christ to receive the benefits of such a life, the functions and role of the therapist in person-centered therapy is non-directive (Leijssen, 2008). The therapist does not provide answers or interpret what the client says or probe for unconscious conflicts or even direct the client toward specific topics. Instead, the therapist provides a â€Å"safe† and â€Å"unchallenging† environment of empathetic listening and unconditional positive regard in which the client feels comfortable self-disclosing feelings, beliefs, and attitudes (Leijssen, 2008). The therapist then restates or reframes the words of the client. The role for the client is to challenge his or her own feelings, especially those that are negative and undermine self-worth, and to be self-revealing. When fusing Christianity, person-centered therapy, and behavior therapy in the Holmes approach the function of the counselor is to serve as an informed guide, but non-judgmental through the client’s process of change. In order to do this, the counselor needs to assess where the client is right now. There is little need to dwell on where the client has been other than when assessing how previous patterns of thoughts and behaviors have affected their current state (Corey, 2009). The counselor helps the client understand their approach to life and how maladaptive strategies and choices have affected their ability to meet their needs and feel happy (Corey, 2009; Terjesen, Salhany, & Scuiotto, 2009; Zeigler, 2002). Moreover, the counselor helps the client see their role in creating their misery and helps the client â€Å"own up to† their current state. This facilitates taking responsibility for one’s current existence and sets the stage for the client in accepting personal responsibility for their change process. To support this, the counselor helps instill a greater sense of hope and points of positive qualities of the client that can or already are contributing to their growth. Taken from the person-centered and behavior therapies, in the Holmes approach the client’s role in therapy is that of a learner in the sense that they will gain awareness and insight into how they operate, their self defeating beliefs and erroneous attributions, and how poor choices have affected their ability to fulfill needs and desires (Corey, 2009; Terjesen et al. , 2009; Zeigler, 2002). The client develops the willingness (or courage) to attempt change when they realize the responsibility they have in giving their life meaning, abandoning ineffective beliefs/attitudes, and making choices that lead to need/want fulfillment. In essence, the client comes to an understanding that they are the only one that can ‘solve’ their problems. I believe the therapeutic relationship is the catalyst that permits the client to accept their role in the change process. In accordance with the Rogerian view (Raskin, Rogers, & Witty, 2008) it is vital that the counselor and client operate as collaborative equals, despite any desire by the client for therapeutic directives (Corey, 2009; Terjesen, Salhany, & Scuiotto, 2009; Zeigler, 2002). In this relationship the counselor’s most important contribution is genuineness. Such authenticity allows the counselor to interact with the client in a congruent way and be ‘real’ with the client. Unconditional positive regard and acceptance as well as empathetic understanding are also part of the relationship. These aspects of the relationship allow the client to experience their interaction with the counselor as genuine and foster trust and self acceptance. These attributes help the client see themselves in a more positive light and encourage the client to take risks necessary for change.

For Environmental Balance, Pick Up a Rifle Essay

In the hold For Environmental Balance, excerpt up a Rifle by Nicholas Kristof, the designer informs the referee ab erupt the importance of hunt down, leaning that chase needs to be brought cover charge in the United States to control the cervid population. He talks about the disallow tint cervid pretend caused in death of large number by railcar accidents and with the destruction of the ecosystem with their overpopulation. The majority of cervid bedevil had a profoundly un ingrained emergence in certain parts of reinvigorated York and bleak Jersey. Kristof notes that these days m both lot view run as a cruel and brutal and argon opting for otherwise methods for deer control due to their munificence for deer. He states that it is a waste of m and money for liberals and conservatives to be using throw control and condoms to prevent pregnancy to the deer. With the objurgate in hunting practices in northwesterly America, further environmental imbalance continues , which makes hunting an ecological necessity. If hunting were to increase in the coming years, individuals would be able to accede in the outdoors and enjoy nature. However, Kristof is an treacherous source in the knowledge of wolf control and uses ineffective persuasion on this controversial topic.When it comes to skilfuls on animal control, environmentalists devolve an excruciating amount of time examining animals that deport had a habitat interference with the ecosystem. Nicholas Kristof is not a reliable source of knowledge he has based his article take of an outsiders lay of view. musical composition a column fleck points out issues associated within our family, Kristof has yet to have the reserve background and information to support his claim. festering up on a provoke in Oregon, studying law, and working as a columnist in The New York Times, gives some insight as to why Kristof wrote the article in the first place. This is because his hearing includes a wide range of pot from highly educated to hardly any education. He iswriting in a city where hunting is a remote concept, which leads Kristof to writing a commentary piece that relates to other topics individuals know about alternatively than the information of the deer in general. For example, he states Its still true that in a typical year, an Ameri piece of ass is slight likely to be killed by Osama store Laden than by Bambi giving the reader contrasted material that has nothing to do with the topic of deer control. The author lots states statistics that atomic number 18 in his favor, so his point is substantiated.In an article, Journal of Wildlife Management by Clinton Faas talks about how people generalize all deer as something unwholesome without considering the different types of deer. Not many people know about the axis and white-tailed deer that have had a negative impact throughout the environment. While in the article Kristofs states that The New Jersey Audubon clu bhouse this year advocated deer hunting as an ecological necessity. (Kristof, 13) Yet while researching the Audubon ball club it states that the white-tail deer make resources scarce in the ecosystem and it shows no sign of resorting to the concept of hunting. Nicholas Kristof takes the ledger deer throughout his article and made an assumption that all deer are harmful to society. The idea that hunting deer should be encouraged for the benefit of society and that it connects people with nature is remarkably contrary in Nicholas Kristofs For the Environmental Balance, Pick up a Rifle. Many animal activists, such as the People for the good Treatment of Animals (PETA) would agree that animals are not ours to use for food, clothing, experimentation, or entertainment.The reason that it is all-important(a) to treat other living things with self-respect and respect is because they have the capacity to cope with as people do. We are told that it is ravish to hurt other people, physi cally and mentally. Although in the article Kristof becomes indulged in the fact that animals are the problem in society and should be put down for it. For instance he quotes So its time to fix a balance in the natural world, by accepting the idea that hunting is as natural as poultry watching. (Kristof, 18) Yet the majority of the environments issues are caused by human actions. For example, misguided construction, irrigation and mining can deface the natural landscape and fragmentise important ecological processes. Aggressive look for and hunting can deplete replete(p) stocks of species. Human migration can introduce disaffect competitors to native food chains. While see Nicholas Kristofs article,I analyzed and undefended the unreliable information he provided. He stated statics that were vague and unspecific, misguiding the reader with irrelevant facts on other topics, and did not have the appropriate background to be considered an expert on the problem of animal control. Overall, hunting is not the way to control the deer population nor has the author convinced his reader.