Realism versus other Theories of International Relations

The history of world-politics has been dominated by various theories that help explain international relations. In the recent past, debate has been rife over which theory is better suited to foster sound world-politics. The world’s political forum constantly attempts to substantiate which international relations theory can successfully deal with pressing global issues such as war and peace.Advertising We will write a custom essay sample on Realism versus other Theories of International Relations specifically for you for only $16.05 $11/page Learn More In this debate, most scholars are of the view that the choice of the international relations theory has a great impact on global politics. Unlike political ideologies, international relations theories have to be proven before being instituted. The most common theories of international relations are liberalism and realism. Theories of international relations are modeled on the concept that nations usu ally act in a manner that serves their national interests. Examples of national interests include economic prosperity, military power, and self-preservation. This essay presents the argument that realism explains more about the important aspects of world politics than the other theories of international relations. Realism is an international relations theory that argues that countries only act in a manner that increases their power in relation to that of other countries. Realism claims among other things that a powerful country is best suited to outdo other relatively weaker countries. The general concept behind realism is that the world is a dangerous and harsh place. There are several theories that counter the concepts contained in realism. The most prominent counter-realism theory is liberalism. According to liberalism, the closeness between countries has nullified realism. The fact that several states have similar interests has eliminated the need to employ military power in the event of a disagreement. The other counter-realism theory is idealism. Idealism stresses on the need for nations to employ moral ethics when they are conducting their international politics. Idealism champions for the abandonment of inferior tactics such as trickery, dishonesty, and violence. Proponents of realism argue that it is formulated on the assumption that the global-politics arena is dominated by anarchy. The foundation of realism is pegged on ‘human nature’. This means that realists assume that governments like human beings are driven by self-interest. Therefore, it is unlikely that the political organizations that are formulated based on other international relations theories can be able to change human nature. The pessimistic nature of realism is often challenged by both idealists and liberalists. Although the pessimistic nature of realism seems undesirable, its central premise bears a solid argument. Many scholars concur that human beings are creatures who are self-preservative by instinct. Politics is a reflection of individual human beings albeit in a collective front.Advertising Looking for essay on international relations? Let's see if we can help you! Get your first paper with 15% OFF Learn More Realists articulate that nations are primarily reflections of collective human nature. This makes it hard to argue that the behavior of states can be different from that of individuals. The evidence of the anarchy that is characteristic of human nature can be witnessed all over the world. The events that transpire in the course of conducting global politics provide a solid backing for realism. Currently, the drive for self-preservation and accumulation of resources are prime influences of international politics. For instance, the relationship between the United States and China is dominated by the need for self-preservation on the side United States and the need to gain resources on China’s side. Most human beings wo uld concur with the premises behind realism. There are several events around the world today that are used to interpret the current state of world politics. Some of the events that help interpret global politics include ideological differences between nations, armed conflict, and possibilities of conflict. These events are a clear indication that realism is a valid theoretical concept. Even in a world where people lean towards other theories such liberalism and idealism, political events are still characterized by realistic tendencies. For instance, the political class in the United States constantly distances itself from realism and yet its actions are in line with realism. In addition, the fact that the most politically influential countries in the world are also the countries with the most military power supports realism. The anarchical mode of political operation that is proposed by realism is very similar to the current order of events in the global political arena. Even though realism is well represented in the global arena, its advocacy can steer a state towards a path of conflict. Proponents of realism blame the theory for increasing aggression, unnecessary military expansions, and conflicts. The need to foster international political unity is greatly undermined by realism. Unsatisfactory political unity can hamper free trade, peace, and cooperation among countries. The liberalists often blame realism for the collapse of the Soviet Union. In its heydays, the Soviet Union exemplified one of the strongest political units to date. Liberalists also argue that the benefits of globalization are too valuable to be ignored. Given that realism is often touted as one of the deterrents of globalization, liberalists conclude it has no place in modern day global politics. The fact that realism conveys the most important facts in modern politics can be exemplified by the fact that it is a useful reference during conflict resolution. For a conflict to be resolved, it s cause has to be understood.Advertising We will write a custom essay sample on Realism versus other Theories of International Relations specifically for you for only $16.05 $11/page Learn More Realism is best suited in scenarios where tensions and conflicts are rife. The fact that realism concerns itself with a world that is characterized by self-interest and war makes it pertinent to global politics. The last century has seen realism come under attack as an outdated international relations theory. However, events that have transpired within this same period indicate that these attacks have been baseless. For instance, the political events that transpired during the cold war era highlighted realism on a global scale. During the cold war era, constant jostling for positions of power kept both the US and the USSR in a state of near conflict. These actions point towards the anarchic political actions that are exemplified by realism. Without an in-depth un derstanding of realism, it would be hard to resolve political conflicts and acts of aggression. Realism is arguably the easiest theory to define amongst the international relations theories. All political and international relations experts concur that realism provides a measurable success rate as opposed to other theories. For instance, military superiority can be exhibited through machinery to a measurable extent. However, opponents of realism often decry the over-emphasis of military might as a measure of political superiority. There is a school of thought that is of the view that the simplistic nature of realism renders it circular in nature. For instance, realism leads to the argument that countries ‘obtain power because they obtain power’. Therefore, little attention is paid to the reasoning behind the actions of the countries that pursue realism. The hunger for power among nations can also eclipse other important developments in international politics. A lot of a ttention is paid to displays of power as opposed to other modern methods of conflict resolution. The legitimacy of realism as the most relevant international relations theory is constantly undermined by the other international relations theories. The Democratic Peace Theory for instance argues that democracy in itself can foster peaceful coexistence among nations. The efficacy of the democratic theory is however undermined by the fact that even democracies get involved in conflicts. Another backing to realism being a superior and more simplistic international relations theory is that even the other theories tend to employ realism in their operations. For example, the United States’ invasion of Iraq was said to be an attempt to foster democracy in that country. However, the invasion itself was characteristic of realism because it involved violence and military invasion. The major opposing theory towards realism is liberalism. Liberalism advocates for free trade among countries , capitalism, and democratically elected governments. Realists usually fault liberalists using the argument that liberalism is not a real-world theory. This argument is not entirely true but it is fostered by the fact that the results achieved by liberalism are less dramatic than those achieved by realism are. However, the tedious nature of liberalism makes it seem more like an ideology than a theory.Advertising Looking for essay on international relations? Let's see if we can help you! Get your first paper with 15% OFF Learn More The debate as to whether realism is the most practical and simplistic theory when it comes to international politics is set to continue. The most prominent argument for realism is that it is the only true theory and the other theories are mostly ideologies. The main argument against realism is that it is has no place in today’s globalization politics. However, the facts indicate that the relevance of realism in politics is evident and it cannot be ignored. This essay on Realism versus other Theories of International Relations was written and submitted by user Dylan George to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Essay Sample on Barrack Obama Voting for the President

Essay Sample on Barrack Obama Voting for the President Can Barrack Obama be the next President of the USA? Barrack Obama is a Junior United States Senator from Illinois, and a running candidate for the Democratic Partys nomination for the 2008 Presidential elections against Hilary Clinton, ex-First wife of Ex-President Bill Clinton. Obama already broke boundaries as the fifth and current African-American serving in the US Senate. He graduated from Columbia University and Harvard Law School. However, Obamas blackness was put in question because of his inheritance. His father came from Kenya and his mother is white American. This was put into question every time talks about America being ready for a Black president emerge. As with the pros and cons, Obamas political agendas are not any different from Clintons platform. It’s just that he is Black and male, and Clinton is white and female. Both are banking on their weakness points (Black and Female) to arouse vote sympathies and to prove that one can go beyond his or her weakness point to serve the great country of America, if he or s he would be elected President. Obama being black however rouses more questions instead of sympathies for him. Recent polls showed Clinton being 40 points higher than him. However, when it comes to black polls, Obama leads Clinton with a sweeping 24 points, but this is in the Black community. Nonetheless, a survey among Black citizens whether America is ready for a Black President showed that most of them dont believe that this is the time for it; or that they would live long enough to witness it. If Black citizens have this mindset, what more the White citizens? Part of Obamas problem with black voters is that he is viewed by whites as the first black candidate with a legitimate shot at the White House. When white America has embraced a candidate as they have with Barrack Obama there is a certain amount of distrust that goes with this among a number of African Americans, Wilson said (cnn.com). The only advantage that can be seen once Obama wins Presidential election is having an educated man with an educated list of priorities and programs that if dealt with and completed thoroughly, United States would perhaps be still the greatest nation in the world. The drawback however, is the unprepared ness, still, of most Americans, as well as abroad in dealing with a Black President. There might be an issue of bias leaning towards the favor of Blacks and Whites may see it as threat (hopefully not leading for Civil War II). Nonetheless, in terms of readiness, America is ready, actually, but to exercise clearly that readiness through voting might still be impossible. Yes, they are open but somehow theres this secret power that keeps them from making their â€Å"open-mindedness† known through voting Obama for President. So we have seen the gradual maturing of an America which now accepts that Blacks can do more than play sports and entertain them. The reality is thateven though Blacks in positions of influence owe their success to the Thurgood Marshalls, Martin Luther Kings, Fannie Lou Hamers and Jesse Jacksonsthis success is not the alternative to civil rights activism. It is the result of civil rights activism, then and now. This does not mean racism no longer exists, and it certainly does not mean that all America will embrace a Black commander in chief. But it does mean that the climate is set for an active strategic minority to mobilize the majority to victory (Sharpton, 2007).

Principles of Accounting-- ratio analysis Essay - 2

Principles of Accounting-- ratio analysis - Essay Example This report provides the financial analysis of e-Generation. Financial ratios will be used as the main approach of financial analysis. Horizontal analysis will also be provided to compare the financial performance of the business in different periods. The calculations will be provided based on the software generated financial information for the business. Although the ratios will be provided for the month of January, comparison will be made between the results at the end of January and the results on 10th of January. This analysis will be important in understanding and evaluating the performance of the business in order to acquire information necessary for decision making by stakeholders. The profit margin foe e-Generation for the month of January is 10.61%. This means that for every unit of sales the company makes 0.1061 profits (Sutton, 2004). This means that the company is making positive profit. This reflects an increase from the profit margin of 10th January which was 8.33%. Therefore, the company controlled its expenses towards the end of the moth better than at the beginning of the month. The gross profit at the end of the month of 26.3% means that the company made a gross profit of 0.263 for every unit of sales. This is a good performance. However, it is a decrease from the gross profit made at the beginning of the month (34.04%). This means that the business managed its cost of sales in period 1 (beginning of January) than period 2 (end of January). The return on assets ratio was 4.08% at the end of the month, which means that for every single unit of asset the business earns a profit of 0.0408. On 10th January the business record ROA of 0.57% which means that the company earned more profits for every unit of assets in the end of the month compared to the beginning of the month. The ROE at period 2 is 12.06% which indicates that the company made a profit of 0.1206 units for every unit of equity invested by owners. This is a good

Multi model project Essay Example | Topics and Well Written Essays - 1000 words

Multi model project - Essay Example They just want to eject the DVD out of the DVD player or flip the channel if it is on cable network. It would be interesting to take a peek into the kind of work the producers and screenwriters do to create the desired effect in the audience. The impact it makes the viewers say wow. Obviously, everyone is not interested in the technicalities of a film production. However, one should be aware of the perspective that a movie is instilling in the viewer’s mind. Film critics call this the gaze. It tells the point of view of the movie director. Hollywood action blockbusters like the James Bond and Mission Impossible series are very good examples of the male gaze. The protagonist of such movies is a crime-fighting dominant male. He has access to sports car and top female models of the world. The protagonist is living the fantasy of the majority of the male audiences; to live a carefree adventurous life full of beautiful girls and luxury cars. There is no harm in giving the audiences what they want. The problem arises when such movies become the trendsetters. The people who disagree with such fantasies should not consider themselves outcasts but sadly this is the case. Such movies define what a successful person should look and behave like. This is wrong at so many levels. The people who are living â€Å"ordinary† lives should not consider themselves less than the fantasy projected on the cinema screen. Such perspective or gaze is so dangerous that it creates a sense of loss among average people. They want to live a large life but sadly they fall short because what is projected on the screen is just a fantasy. The counter argument that movies are supposed to be fantastical so that people can momentarily get out of their mundane routines and enjoy voyeuristic pleasures, is not valid because there is a difference between confining something and making a fantasy movie. The fantasy movie Lord of the Rings does not have that usual gaze. The values shown

Pressure Sensor Controlled Valve Based Microcontroller In General Engineering Essay

Pressure Sensor Controlled Valve Based Microcontroller In General Engineering Essay A pressure sensor measures pressure, typically of gases or liquids. Pressure sensor can also be called as pressure transducers, pressure transmitters, pressure senders, pressure indicators and piezometers. Pressure sensors are used for control and monitoring in thousands of everyday applications. Pressure Sensor Controlled Valve based Microcontroller in General A pressure sensor controlled valve based microcontroller is a pressure sensing device that is capable of controlling a desired pressure up to the set point set by the user. Besides, the pressure sensing device also allows the user to monitor and control the entire process of the system by interfacing a Microcontroller with a PC Using RS232 and the PC Serial Port. Pressure sensor and valve are required to design pressure sensing device according to their task Nowadays pressure sensors can vary in design, performance, application suitability and cost. On the other hand, pressure sensors can be classified in term of pressure ranges they measure, temperature ranges of operation, and most importantly the type of pressure they measure. Valves are used to control conditions such as flow, pressure, temperature, and liquid level. The opening or closing of the valve is depend on the signals received from the controllers that compare a set point to a process variable where the value is obtain from the sensor that monitor the change of conditions. Besides, the opening and closing of the control valve is done by electrical, hydraulic or pneumatic system. A valve also can vary in design, pressure range and temperature range of the operation, application suitability and cost. Project Objective The main objective of this project is to design and construct a prototype of pressure sensor controlled valve based microcontroller. This prototype should have the following fundamental features: Able to control the pressure through the setpoint set by the user. Able to activate the alarm if the pressure is above a setpoint. Able to shutdown the whole process if the pressure is in critical pressure. Able to monitor the process of the control through PC. Upon successful implementation of these fundamental features, enhancements are added to improve the safety of this pressure sensor controlled valve based microcontroller. The first improvement is adding manual control function to make this control valve able to control by the user even the pressure sensor is fail to give a signal to the microcontroller. Besides, a backup battery is also added into the controller to provide power when there is absence of main power supply. The backup battery will power the circuit only in the event of failure. On the other hand, a temperature sensor will also be added into this pressure sensor controlled valve based microcontroller to maintain the optimum temperature of the gas. Project Overview The pressure sensor controlled valve based microcontroller is designed to control pressure either in gas or liquid medium in any suitable application. The pressure sensor will senses the pressure from the along the tube or pipe along the application. The bottom of the pressure sensor is connected with a T-Joint connector to the tube or pipe and the analog control signal from the pressure sensor will be connected to the analog port of microcontroller. The analog signal received by microcontroller will be analyzed by the microcontroller. The microcontroller will then control the control valve by with the signal received by the sensor. Besides, a temperature sensor (LM35) will also be added into the prototype to enhance the performance of the prototype. The temperature sensor will be mounted at the surface of the tube or pipe. The temperature sensor will sense the temperature of gas or liquids inside the tube or pipe and send a control signal to microcontroller. The analog control signal from the temperature sensor will be connected to the analog port of microcontroller. The microcontroller then will control the control valve according to the temperature received by sensor. Recently, serial port of computer slowly phase out from the market and to be replaced with USB. Nowadays, most developer will favor USB to serial converter to obtain virtual serial port. So, in order to for general and convenient use, a USB to UART converter (UC00A) which offers USB plug and play, direct interface with microcontroller will also be added to the prototype to create a monitoring system through PC. The Transmit Signal (TX) from UC00A will be connect to the microcontroller receiver pin (RX/RC7) . While the Receive Signal (RX) from UC00A will be connect to the microcontroller transmitter pin (TX/RC6) . Then, a GUI( Global User Interface) will be develop using Microsoft Visual Basic for user to monitor the process operation of the prototype. On the other hand, a backup battery of 24Vdc will also be connected parallel with the main power supply. This is to provide the prototype with a backup power supply when there is no power provided from main power supply .This is to prevent and protect the prototype from trip of circuit and critical shut down of the prototype that might cause damage to the hardware of the prototype. Besides, a LCD display (216 characters) is used to display the pressure and temperature measured from the sensors and indicates the condition or status of the control valve and the air compressor which useful for calibration, monitoring, debugging and testing. A buzzer is embedded in the prototype is used as an alarm when the pressure or temperature is above the setpoint set by the user. Project Scope and Methodology This project consisted both of the hardware and software implementation. According to the schedule, construction of the final prototype was ensured to achieve the projects objective. At the same time, software also designed to meet all the fundamental requirements. When the prototype that met the primary objectives was successfully constructed, the remaining projects duration was spent on enhancements of the prototype to make it more durable and reliable. In part one, projects objectives identification and planning had been done. After that, research on some the theoretical background of the project such as types of pressure sensor, temperature sensor, type and size of fittings and tube, types of control valve and the basic electric component for the controller that needed for this project. Electronic components were carefully selected to construct the prototype based of its functionality, reliability and cost. When hardware selection was finalized and decided, a layout for printed circuit board (PCB) was designed and fabricated. After that, a simple program was written to test, calibrate and debug the prototype to make it worked as described in the primary objective. In part two, further enhancements to the prototype were planned and implemented. The mechanical drawing of the prototype had been designed. The mechanical part of the hardware such as pressure sensor, tubing, fitting, control valve is joint up together and the wiring is connected to the into the main board(Controller) of the prototype. Besides, monitoring system of the operation is also embedded to the prototype to ease the user to monitor the operation using a PC in a control room. After all features, were completed, testing was undertaking to ensure the reliability of the whole system. Troubleshooting and debugging phase on software and hardware were necessary to make all the system become more reliable and safe. Structure of the Report This report is divided into six chapters. At the Chapter 1, Introduction to the project which includes Pressure Sensor Controlled Valve Based Microcontroller in general, Project objective, Project overview, Project scope and Methodology had been discussed. In Chapter 2, some theoretical background for this project will be explained and described in details. While in Chapter 3, how hardware designed of this project as well as their functions will be elaborated. Besides, Methodology used for design the hardware also will be discussed in this chapter. Chapter 4 described the Methodology for the software development of this project. Flow chart for the program will be showed and explained. Besides, equipment and tools used to design complete software also will be discussed in this chapter. In Chapter 5, results and discussion will be shown to explain how the pressure sensor control valves based microcontroller performs its operation. On the other hands, the problems encountered while designing the prototype either in hardware or software and how these problems solved will be also discussed in this chapter. Chapter 6 will be the summary and conclusion of the report whether all the fundamental requirements and objectives achieved for Final Year Project. Then, there will be a short recommendation or suggestion to further improve this project so that it can be used in various types of industry environment. Chapter 2: Theoretical Background 2.1 Introduction to Pressure Sensor A pressure sensor is one that will measure the pressure either gasses or liquids. Pressure is an expression of the force required to stop a fluid or gas from expanding, and it can be express as the equation below. [1] P=F/A Where: P  is the pressure, F  is the  normal force, A  is the area. Pressure Units can be expressed as the table below: Table 1: Pressure Unit 2.1.1 Types of Pressure Measurement Basically, pressures sensor can be classified in term of pressure ranges, temperature ranges and most importantly the pressure type. Pressure sensor can be classified in 5 types of pressure measurement which are : Absolute pressure sensor -Whereby the sensor measure the pressure relative to perfect vacuum pressure (0 Psi or no pressure) 2) Gauge pressure sensor -Whereby the sensor measure the pressure relative to given atmospheric pressure. For example when a tire pressure gauge read 0 Psi meaning to say there is 14.7 Psi (atmospheric pressure) in the tire. 3) Vacuum pressure sensor -The sensor is used to measure pressure less than the atmospheric pressure. 4) Differential pressure sensor -The sensor measures the difference between two or more pressures introduced as inputs to the sensing unit. 5) Sealed pressure sensor Whereby the sensor is used to measure the pressure relative to sea level pressure. 2.1.2 Types of Control Signal from Pressure sensor There are two types of Control signal from pressures sensor which are current output and voltage output signal. Current output normally ranged from 4-20ma while the voltage output normally ranged from 1-5Vdc or 1-6Vdc (The voltage output range mostly is depend by the manufacturer or the type of application). The current output and voltage output always start from 4ma and 1Vdc is to check whether the wiring of the pressure sensor is done correctly and to check whether there is faulty at the pressure sensor. For example, if the pressure sensor output a current below 4ma or 1Vdc, we have to check at the pressure sensor because they might be faulty at the pressure sensor. The current output control signal is widely used in many kind of industry compared to voltage output control signal. This is because there is no voltage drop when current output control signal travel a very long distance compare to voltage output control signal. When travelling at a very long distance, voltage output control signal will have disadvantage due to the resistance of the long wire will cause a voltage drop and might give an inaccurate result to the controller. So, the current output control signal tends to give a more accurate result compare to voltage output control signal. Due to limitation at PIC microcontroller which only has Analog-to-Digital Converter, so a voltage output control signal will be more suitable for the project. Types of Application of Pressure sensor A pressure sensor can be widely used in many types of application.For example: [2] 1) Pressure Sensing -The pressure is measure directly using pressure sensors. This is very useful in oil and gas industry, cars, aircraft, and other machinery that has a pressure functionality implemented. 2) Leak Testing -A pressure sensor can be used to sense the decay of pressure due to a system leak. This is done by either comparison to a known leak using differential pressure, or by means of utilizing the pressure sensor to measure pressure change over time. 3) Level Sensing A pressure sensor can also be used to calculate the level of a fluid. This technique is commonly employed to measure the level of contents in a tank (such as in a water tower). For most practical purposes, fluid level is directly proportional to pressure. In the case of fresh water where the contents are under atmospheric pressure, 1psi = 27.7 inH20 / 1Pa = 9.81 mmH20. The basic equation for such a measurement is P  =  p  *  g  *  h Where P = Pressure, p = Density of the Fluid, g = Standard Gravity, h = Height of fluid column above pressure sensor Introduction to Valve A valve is device that is used to regulate the flow of a fluid or gasses by opening and closing or partially obstructing various passageways. A valve can be operating either in manual operation or automatic operation driven by change in pressure, temperature or flow. For manual operation, the opening and closing of the valve is control by using hand wheel, lever or pedal using human force. Meanwhile for the automatic operation, the opening and closing of the valve is control using an actuator .An actuator will stroke the valve depending on its input and set-up, allowing the valve to be positioned accurately, and allowing control over a variety of requirements. Nowadays, Actuators are widely used for the purposes of automatic control such as in washing machine cycles, remote control such as the use of a centralised  control room, or because manual control is too difficult such as when the valve is very large. [3] 2.2.1 Types of Actuator in the Valve Valve can be classified on how they are actuated. Among them are: [3] Hydraulic Pneumatic Manual Solenoid Motor For a hydraulic system actuator valve is normally used to control a high pressure while Pneumatic system actuator valve is normally used to control a medium pressure in application. Meanwhile low pressure, solenoid or motorized system actuator valve can be used. 2.2.2 Application of Valve Valve can vary widely in form and application. The size of the valve is typically range from 0.1mm to 60cm. Some special valve can have a diameter exceeding 5 metres. The cost for a valve is depending on types of the design, material build, range of temperature and pressure and manufacturer. When a designer, engineer, or user decides to use a valve for an application, he/she should ensure the rated maximum temperature and pressure are never exceeded and that the wetted materials are compatible with the fluid the valve interior is exposed to. [3] The industries in which the majority of valves are used are oil and gas, power generation, water reticulation, sewerage and chemical manufacturing. [3] 2.3 Introduction to Tubing Tubing is pipe or a hollow cylinder for the transmission of fluid (liquid or gas). The term of pipe and tubing can be interchangeable although there are minor distinctions exist- basically, tubing imply tighter engineering requirements than pipe. Both pipe and tubing can be varies in different rigidity and permanence. For examples, a hose is normally portable and flexible. Besides, tubing and pipe can be specified by standard pipe size designation. Types of tubing are specified by the actual inside diameter, outside diameter and the wall thickness. [4] 2.3.1 Types of Tubing Basically, there are few types of tubing can be used in industry. Among them are: Copper Tubing Stainless Steel or Aluminium Tubing Plastic Tubing For copper tubing, there are two basic types of copper tubing, soft copper and rigid copper. Copper tubing can be joined using flare connection, compression connection, or sweat (solder). Soft copper tubing can be bent easily to travel around obstacles in the path of the tubing while a rigid copper cannot be bent and must use  elbow fittings  to go around corners or around obstacles. Soft copper is the most popular choice for refrigerant lines in  split-system  air conditioners and heat pumps while rigid copper is most popular choice for water line. [5] For Aluminium Tubing, it is sometimes used in industry because it is resistance to corrosion and solvents, and for its ductility. Besides, aluminium cannot create sparks when there is a transmission of flammable solvent and the weight for aluminium is lighter compare to steel and iron which make it suitable to use in many types of industry. [5] Aluminium tubing can be joined using flare connection, compression connection, or sweat (solder). Aluminium tubing can be used for heat transfer tubing such as in refrigerant systems. [6] For Plastic Tubing, there are few types of plastic tubing which are PVC(polyvinyl chloride) and CPVC, Polyethylene, Rigid Polypropylene, ABS (acrylonitrile butadiene styrene) and Nylon tubing. The most popular for plastic tubing is PVC. It is rigid, and uses thread or glue connections. Besides, it is available in several of pressure range. [5] Plastic tubing is widely used for its light weight, chemical resistance, non-corrosive properties, and ease of making connections. [6] 2.3.2 Types of Tube Fittings There are many types of connection methods for tubing application in industry. The four most common types of tube fttings connections are: Compression Tube Fittings Flare Fittings Bite-Type Tube Fittings Mechanical Grip-Type Tube Fittings The Compression Tube Fitting was the first tube fitting to be introduced, which consist of three components: nut, body and gasket ring or ferrule. The disadvantages of compression tube fittings was it can withstand only minimal pressure and the remake is very difficult due to the contrustion of the sealing ring. [7] CompressionTube Fitting The Flare Fitting was the another variation in tube fittings designs. The fittings is made up from a nut, sleeve and body with a flare or coned end. During installation of a tubing, a special flaring tools are usually required .The disadvantages of flare fittings is that flaring of the tubing may cause stress riser at the base of the flare or cause the axial cracks on thin tubing. [7] Flare Fitting For Bite-Type Tube Fitting , it is used to accommodate higher pressure application over the compression tube fitting design. The fittings is typically made up with a nut, body and ferrule(s) having a sharp leading edge, which give bites into the skin of the tubing to achieve griping and holding ability. There are two types of design for bite-type tube fittings which are the single ferrule and twin ferrule design. In single ferrule bite, the nose of the ferrule performs two functions. The first function is to bite into the tube to hold it and second function is to provide a sealing element for the coupling body.In twin ferrule bite, the back ferrule is used to bite and provide gripping into tube and the front ferrule is used for sealing element for the coupling body. [7] Single-Ferrule Bite-Type Two-Ferrule Bite Type Meanwhile for Mechanical Grip-Type Tube Fittings are typically two-ferrule in design. The front ferrule is used to seals by coining the surface of the tubing and coupling body. While the back ferrule is used holding action. The back ferrule grip the tube for a distance just out-board from tube holding point of the ferrule nose to enhance vibration resistance. The main advantanges of this design compare to the bite-type fittings is that break and remake of the fitting after installation can be more successfully accomplished without damage to either the fitting components or the tubing. [7] Mechanical- Grip Type 2.4 Introduction to Pipe Thread Basically ,there are two types of standard for pipe thread which are : British Standard Pipe- BSP American National Pipe-NPT/NPS Both of British Standard pipe and American National Pipe is designated by trade size rather than actual diameter. Under BSP, there are two basic types of BSP threads which are the BSPT (British Standard Pipe Taper) which is also know as R threads and BSPP (British Standard Pipe Parallel) which is also known as G threads. Both of the BSPT and BSPP have the same thread angle, shapre and pitch ( threads per inch). The only difference for BSPT and BSPP is BSPT threads are tapered and BSPP threads are straight ( parallel). BSP thread have a 55o include angle and have rounded peaks and valleys. On the other hands, for NPT, there are also two basic types of national pipe threads which are NPT ( National Pipe Taper) abd NPS ( National Pipe Straight) . Both NPT and NPS have the same thread angle, shape, and pitch (threads per inch).   However, NPT threads are tapered and NPS threads are straight (parallel).   Both threads have a 60 ° included angle and have flat peaks and valley 2.4.1 NPT vs BSP Pipe NPT thread are widely used in United State but, BSP thread are more widely used in many other countries.The actual specified outside diameters of American National Pipe is slightly different from British Standard Pipe,.NPT/NPS and BSP thread are not compatible with each another. This is due to the differences in their thread forms and pitch . NPT/NPS threads have a 60 ° included angle and have flattened peaks and valleys while a BSP threads have a 55 ° included angle and have rounded peaks and valleys As conclusion, never ever try to mate a BSP fittings with an NPT or NPS fittings if the pressure holding capability is at all critical. CHAPTER 3 HARDWARE AND SETUP DESIGN In this chapter, the hardware components used to setup the hardware would be elaborated and discussed. Each components features and its operation were studied before proceed to the hardware design. These components were tested on breadboard individually with simple program. The main purpose of this is wanted to determine components and algorithms used are work and function properly. Based on these algorithms, a complete program could be designed to make all the components work in the correct manners. The details about software methodology will be explained at next chapter. After all the hardware components passed the testing, a proper design of Printed Circuit Layout (PCB) was needed. A good and neat design of the PCB would ensure all the components work stability and properly to achieve the project primary objectives. During this stage, Electromagnetic Interference (EMI) theory had studied to prevent undesired manners such as noise or crosstalk occurred in the PCB board. Besides , the design drawing of hardware prototype is also had been studied before assembling the hardware prototype. At the last stage, the tubing, fittings, valve, pressures sensor and pressure gauge is assemble carefully in order to prevent gasses leakage from prototype. 3.1 Microcontroller Unit (MCU) A microcontroller is a computer system that runs on a single integrated circuit. It usually consists of Central Processing Unit (CPU), memory unit and Input/Output (I/O) modules. Apart from these, a MCU also contains timers, counters and interrupt scheduling circuitry. Microcontrollers are widely applied in the robotics and embedded system controllers. Different microcontroller models may offer extra peripherals and registers for some applications (eg. UART, SPI, I2C and etc.). They usually run in a fixed oscillating frequency. There are advanced microcontrollers which are 32-bits microcontroller developed nowadays. But, 8-bit microcontrollers are usually sufficient to design a small embedded controller. In this project, Microchip microcontroller had been chosen due to its extra features. For instance, PIC had built-in ADC module to ease the analog to digital signal converting and Universal Synchronous Asynchronous Receiver Transmitter (USART) module to communicate with PC. 3.2 Microchip PIC Microcontroller PIC stand for Peripheral Interface Controller. Until now, Microchip had developed and manufactured multiple families of PIC microcontroller in different packages. They are several families in a certain category such as PIC10, PIC12, PIC16, and PIC18 in 8-bit PIC microcontrollers, PIC24F, PIC24H, dsPIC30 and dsPIC33 in 16-bit PIC microcontrollers and PIC32 in 32-bit PIC microcontroller. The PIC microcontroller that is used in this project is PIC16F877A. One of the reason this PIC microcontroller was choosen because it is in 40-pin DIP package. It was also chosen because it is powerful and yet easy to program CMOS FLASH with only 25 single word instructions based 8-bit microcontroller. With the 20MHz operating frequency, the PIC only need only 200 nanoseconds to execute and instruction.

New York City Essay -- Personal Narrative Writing Descriptive NYC

New York City Every time I hear this song it makes me long to leave all of my responsibilities and head off to the city of dreams. A trip to New York has been a dream of mine since I was a little girl. I have always wanted to visit the place of tall buildings, history, and where culture is intertwined with its people. I have wanted to live the fast pace life of a New Yorker, where I could stand outside and see, smell, and taste all of the experiences that this city has to offer. I have been building and building this ideal image in my mind for so long. If I ever get to New York, will I be disappointed by the city that never sleeps? The city that is a part of almost every movie I watch. Can New York live up to the expectations I have created? In the summer of 2004 my dream of visiting New York came to life. I could hardly contain my excitement to finally live the life of a New Yorker, even if it would only be for a couple of days. The plane ride itself was torture, because of my bubbling anticipation to get to my destination. Once the captain announced the descent into the New York airport my stomach became a bundle of knots. The arrival into the city was everything I had hoped it would be. My husband and I, of course, had trouble finding our way around JFK airport. We couldn't figure out the place that we were supposed to go to get our baggage. My husband and I and everyone from our plane ended up going outside of the airport to gain access to another part of the airport. Eventually things got cleared up and we found our terminal where our luggage was supposed to be. Finally after about a half an hour of being in the airport we figured out how to maneuver ourselves through the airport. As if we had passed our first test we... ...able to see, because of time restraints. The one sight I really wanted to see, but couldn't, was Ground Zero. Heading back to the hotel in the rain was one of my favorite parts of the trip. How awesome to let your guard down long enough for that child inside to take over. My husband and I tried so hard during our walk to keep dry and duck into stores when the rain got worse. My husband and I eventually gave up all hopes of staying dry. Instead we gave caution to the wind and splashed and played in the rain. It was like taking a walk while taking a shower. I know when we both got back to our room that there wasn't any part of our body that was dry. I will forever have this memory in my head for the rest of my life. I will have many wonderful and exciting memories of my trip to New York. I know if I never go back to this city, I will always remember my experiences.

American Writers Essay

Introduction This is a kind of work that I like very much to do because of help me to remember and memorize everything that I learned and help me to broaden my vocabulary. In this journal I’m going to do a brief analysis of everything that I learned in classes, poems, films, magazines, authors, books and other things. My objectives in this journal are not only get a good mark but also, as I mencioned, learned something else. So, enjoy this travel! â€Å"Introduction to Poetry† by Billy Collins 18/09/2012. â€Å"Two Trains Running† by Tony Hoagland 18/09/2012 What is poetry? 20/09/2012 Poetry is a form of writing in which the author chooses the length of the lines, and not the publisher. Terry Eagletor â€Å"High Windows† by Philip Larkin 20/09/2012 Poems about writing poetry 25/09/2012 â€Å"Purity† by Billy Collins â€Å"I go back to May 1937† by Sharon Olds 25/09/2012 â€Å"Paradelle for Susan† by Billy Collins 25/09/2012 â€Å"Duck/Rabbit† by Billy Collins 25/09/2012 Factors that influenced interpretation 2/10/2012 Example: â€Å"The Sick Rose† by William Blake. Satan Says (Pitt poetry series): Sharon Olds (1980) 4/10/2012 â€Å"The sisters of sexual treasure† â€Å"First night† â€Å"Indictment of Senior Officers† â€Å"Satan says† â€Å"Tricks† â€Å"The language of the brag† â€Å"Night terrors† â€Å"Late† â€Å"The housewives watching morning TV† â€Å"Prayer† The Dead and the Living: Sharon Olds (1984) â€Å"Poem to my first lover† â€Å"New mother† The Unswept Room: Sharon Olds (2002) â€Å"His Costume† â€Å"Blood, Tin, Straw†- 1999 16/10/2012 â€Å"Coming of Age, 1966† by Sharon Olds â€Å"The Toilet† by Gcina Mhlophe 18/10/2012. Extract of a novel â€Å"Dirty Weekend† by Helen Zahavi 23/10/2012 Introduction to the Sherman Alexie’s book â€Å"Flight† 6/11/2012 Chapter 1 and 2 Chapters 3 to 10 of â€Å"Flight† by Sherman Alexie 8/11/2012 Magazine â€Å"Native Peoples† 8/11/2012 â€Å"Flight is supposed to be beautiful . It’s supposed to be pure. † 13/11/2012 Movie â€Å"War Party† by Franc Roddam 15/11/2012 Literary and non-literary texts J M Coetzee- â€Å"The Life and Times of Michael K† Toni Morrison- â€Å"A Mercy† Anita Heiss- â€Å"Avoiding Mr. Right† Zane Grey- â€Å"The Spirit of the Border†. Stephen King- â€Å"The wolves of the Calla† Literary texts| | â€Å"A Mercy† by Toni Morrisonâ€Å"The Wolves of the Calla† by Stephen Kingâ€Å"The Spirit of the Border† by Zane GreyThese, are literary texts because express the inner and subjective reality of the author, allows various interpretations and not intended to inform but recreate the reality. | | Feminism 18/10/2012 â€Å"In a different voice†:Carol Gilligan â€Å"Writing a woman’s life†: Carolin Heilbrun â€Å"Ariel†: Sylvia Plath â€Å"As Novas Cartas Portuguesas†: Maria Teresa Horta