How expectancy theory and equity theory might be used to motivate graduate trainees working in a large organisation Essay Example

How expectancy theory and equity theory might be used to motivate graduate trainees working in a large organisation Paper There are two main theories behind motivation; Expectancy theory and Equity theory. Expectancy theory, developed by Edward Tolman, is known as a cognitive theory and was brought about to dispute previous behaviourist theories. Equity theory looked at by J. Stacy Adams, is a process theory which is actually based on the idea of inequity. Motivation among graduate trainees can vary depending on the circumstances surrounding an individuals employment. If they are in a career that they are extremely passionate about, they will likely put in more effort than someone who has no real determination. Graduates are likely to be in a job for one of two reasons. They will either be there to get a foothold in the profession that they want to ultimately work in, or to make a lot of money to pay off their student debts. However in both cases, an individual will want to feel rewarded and that they are being treated fairly and in an equitable manner to their peers. We will write a custom essay sample on How expectancy theory and equity theory might be used to motivate graduate trainees working in a large organisation specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on How expectancy theory and equity theory might be used to motivate graduate trainees working in a large organisation specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on How expectancy theory and equity theory might be used to motivate graduate trainees working in a large organisation specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Although Edward Tolman and Kurt Lewin were the first people to pioneer Expectancy theory, it was Victor Vrooms (1964) studies that applied the model to workplace motivation. The theory looks at peoples choice in options left open to them and suggests that an individuals motivation is dependent on how much they want something and their likelihood of achieving it. To ensure that graduates in an organisation are motivated, the company must first recognise the components that make up motivation. These are effort, direction and persistence. Effort looks at what actually motivates an individual while direction determines what behaviours an individual chooses. Persistence examines the role in which sustaining or halting a particular behaviour is important. Once a company understands that its graduates are likely to be motivated if all these criteria are positive, they can begin to formulate plans for ensuring that their employees are happy and conducting a successful job. The expectancy theory suggests that there are three key areas that an individual must want to succeed in. These are expectancy, instrumentality and valence. Vroom suggested a formula and it implied that if an individual put no value on any of the areas they would not be motivated. It is therefore important for a company to ensure that their graduates place value on all three areas, as shown in the diagram below. 1.1 The components of Expectancy Theory While some people believe that each of the components are distinct, it has been shown that there is a link between them and that one leads to another. As the newest employees of a company, graduates will be required to show motivation and a desire to succeed in the company. However if the company provides no set targets or options for them to fulfil the above key areas, there is a likelihood that the motivation would not be shown. Therefore, in order for the company to motivate graduates according to expectancy theory, they must ensure that the more work an individual puts in, it will be recognisable in terms of output. For instrumentality, they should also make clear that the more work an individual does for a company, the quicker they are likely to achieve a promotion or a salary increase. As a graduate, it is likely that an individual will want this promotion but in a case where it might not matter and to ensure that valence is present, it would be important for the company to ensure that the benefits of the promotion outweigh the costs to the individual. In a large organisation it is likely that there will be many graduates but competition to get a place initially may be fierce. It is important for the company to enforce the fact that whilst the individual was lucky to get a place, they very much deserved it and that the company values them as a person and for their talents. This in itself will increase motivation. However, as there will be many others in the same shoes it is important for a company to distinguish between each individual to ensure that their work doesnt go unnoticed. With so many graduates, it is important that whilst distinguishing between all of them, that none are overlooked and all feel equal to one another. J. Stacy Adams (1963, 1965) statement on equity theory was perhaps the most influential of its time. He argued that we are motivated to act in situations which we perceive to be inequitable or unfair (Buchanan Huczynski, 2004). As a graduate, inequity is likely to occur when an individual believes they are receiving more or less than they think they deserve. In an instance where they may be being better rewarded than their counterparts it may not be of concern to them, but when their counterparts are receiving higher benefits than the individual there will be a great feeling of inequity and maybe inadequacy. Adams model is based on inputs and outputs and they need to be balanced and calibrated against others in the workplace in order to ensure equity as the below diagram shows. 1.2 The components of J. Stacey Adams Equity Theory Graduates are likely to not have any previous experience of being in a workplace and therefore will probably make a lot more comparisons than those higher up the corporate ladder. As seen from the above diagram, the graduates perception of rewards and outputs includes money, recognition, responsibility, praise and enjoyment. If the graduate feels that their peers are receiving a higher token in any of these output areas, they are likely to experience inequity. Their inputs will be things such as effort, commitment, time, reliability and loyalty. As an individuals outputs reduce and an inequity manifests, the individual will feel compelled to act upon this reduction. They will try to correct the inequity as quickly as possible and this may involve lowering productivity, increased absenteeism or a reduced quality of the work produced. However, the limitation with this model is that it leaves inputs and outputs open to interpretation according to individual differences. For example, whilst one graduate might place large value on pay rises, another may think that these are negligible and that promotion and climbing the corporate ladder is more important. Adams believes that there are strategies for reducing inequity though and in the case of a graduate where one was being paid more than another for doing similar jobs, then the following steps that an individual would take: 1) Change their outputs (i.e. ask for a pay rise) 2) Change their inputs (i.e. not put in as much effort) 3) Change the other partys outputs (i.e. persuade superiors to cut others pay) 4) Change the other partys inputs (i.e. leave the hard work to others) 5) Change the comparable party (i.e. compare with a different individual) 6) Change attitude to inequity (i.e. reason as to why the other is receiving more outputs) 7) Leave the job Therefore, for an organisation to use equity theory to its advantage and to ensure its graduates continue to be motivated after the first few weeks at the company, it is important to ensure that they feel that their inputs are rewarded by outputs and that their peers are not receiving more outputs than them. Obviously, there will be certain individuals who perform better than others and will deserve higher outputs. When this is the case, the company must ensure that the individuals work is definitely above the standard of their counterparts and that it is made clear to others in the organisation why the said individual received the reward. This will actually have a positive effect on the company in that the other graduates in the company will want to achieve a similar output benefit and therefore be motivated to work harder and in turn their inputs will increase. This will have a spiralling effect which will increase productivity and therefore in turn have a positive effect on the company. Both theories can be used to ensure that the graduates are happy and feel aptly rewarded in their jobs. Expectancy Theory and Equity Theory both take into account the costs to the individual and the rewards that are ultimately expected. It is important for an organisation not to pass these theories by because it may ultimately have a detrimental effect to the reputation of the company. By ensuring that those at the bottom of the firm are enjoying their work and feel aptly rewarded, it will create a positive atmosphere that will ensure that the graduates remain loyal to the organisation and are more likely to stay with them rather than defect to a rival firm.

Science Coursework Essays

Science Coursework Essays Science Coursework Essay Science Coursework Essay For my science coursework I have been asked to carry out an experiment to investigate the strengths of different sodium hydroxide solutions. By the end of my experiment I would like to find out which solution would be the best antacid to overcome indigestion. Indigestion is when acid from your stomach flows back up the oesophagus. I will be testing three sodium hydroxide (Na) solutions which have varying strengths, they are labelled A, B and C. To investigate the strength of each alkali I will use 4 different methods to measure the solutions.Phenolphthalein indicator is added to the antacid to turn it pink. Acid is added to the alkali solution to neutralise it. The amount of Acid which is added to each solution will determine the strength ness of it. Neutralisation is an irreversible chemical reaction; this is when an acid is neutralised by an alkali. This kind of chemical reaction produces reactants which are water and salt. The formula for this is: Acid + Alkali Salt + Water.The e quation for this experiment will be:Hydrochloric Acid + Sodium HydroxideHCl (aq) +NaOH (aq) NaCl (aq) +H2O (l)Apparatus:1 x 250cm3 Beaker,1 x 200cm3 Beaker,Pipette Filler,Pipette,Conical Flask,Clamp,Clamp stand,Test tube,Test tube stand,Burette,Measuring cylinder.Sodium Hydroxide solutions A, B and C,Hydrochloric Acid,Phenolphthalein (Indicator),Water.Strategy:In order to make this experiment fair I will be using 4 different methods to measure the acid used to neutralise the antacid solution. I will be using test tubes, beakers, measuring cylinders and the burette/pipette. I will test the equipment to see which method produces the most accurate results. By the end of the experiment I will be able to identify which method is the best and therefore conclude which equipment formed the most precise outcomes.Method 1 (Test Tubes)1. Pour one test tube full of the Sodium Hydroxide into a beaker.2. Add few drops of indicator to turn it pink.3. Add little amounts of HCl from the test tubes, into the solution and wait until it turned colourless.4. Record how many test tubes of HCl it took for the solution to be neutralised.Conclusion of this method:By using this method I found it difficult to record the results accurately. I was unable to control my hand when the acid was being added to the alkali. This made my result unreliable because the correct readings werent taken as the solution turned colourless. Therefore I will not be assessing this strategy as there are many defects and creates unreliable results.Method 2 (Beakers)1. Pour 100cm3 of Sodium Hydroxide in to the smaller beaker.2. Add few drops of indicator to turn pink.3. Use the larger beaker to add the acid to the alkali. Wait till the solution turns colourless.4. Record how much HCl was added to the Sodium Hydroxide.Conclusion of this method:I think this strategy was reasonably reliable as there was more acid in the beaker than the test tube, so I was able to stop as soon as the solution went colourless. Howe ver due to human error I dont think I got completely accurate results. Also as the graduations on the beaker were more spread out, me and my group couldnt tell exactly how much HCl was added to the Sodium Hydroxide. We estimated most of the results for this method. Overall I think this method is undependable as the results wont reflect the true outcomes of the experiment, therefore I will not be assessing this strategy.Method 3 (Measuring cylinders)1. Pour 100cm3 of Sodium Hydroxide into the measuring cylinder.2. Add few drops of indicator to turn pink3. Pour 100cm3 HCl into a measuring cylinder.4. Add HCl to Sodium Hydroxide until it turns colourless. Then record how much HCl was used and take it away from 100cm3Conclusion of this method:I think this method was very accurate because of the amount of graduations of the measuring cylinders. I was able to tell exactly how much acid was needed to neutralise the solutions. This slightly closed the gap for human error as the graduations were more reliable. However, it was difficult to pour acid from one cylinder to the other, sometimes a few drops of solution fell outside the measuring cylinder. This minor problem could affect the outcome of my results, therefore I will not be using this method.Method 4 (Burette Pipette)1. Pour acid into smaller beaker. Pour Sodium Hydroxide into larger beaker.2. Pour acid into the burette up to 0.003. Using the pipette and pipette filler pour 25cm3 of Sodium Hydroxide into a conical flask.4. Add few drops of indicator to turn pink5. Turn the tap of the burette to pour the Acid into the conical flask. Wait till the solution goes colourless.Conclusion of this method:Because of the amount of gradients on the burette, I believe that this is the best method. My results were extremely reliable and I was able to obtain accurate results. There was very little room for human error as the tap enabled me to stop the acid as soon as the solution went colourless. So, I have decided to use thi s method because of the amount of accuracy.Experiment:Method 4 is the overall method I will use as I consider it to be the best experiment to find out which Antacid is the strongest.Here is how to carry out the experiment, step by step:1. Collect all the equipment which is neededs of antacid brands include Rennie and Mucogel, and many of the popular antacid brands contain a mixture of more than one active ingredient. However some antacids can create some Side-effects such as diarrhoea and constipation. Also some antacids contain an ingredient called which forms a barrier that floats on the top the stomach contents to prevent reflux.Evaluation Conclusion:From my results and calculations I think my experiment went well. I did as much as I could to try and make the experiment fair and accurate however it was inevitable that a gap would be open for human errors. During my experiment my group always changed the person who was recording the amount of acid needed and the role of turning t he tap when the solution turned colourless. This may have affected our results as different people observe things in different ways. Someone may have turned the tap too early or too late which would affect the outcome of our results. Also to make my results more firm, I could have repeated the experiment a few more times in order to get a range of results.Human error makes way for things such as, not rinsing out glassware properly, misreading the burette and not detecting the end point accurately. There are other methods that I could have tried out as well such as a pH meter. A pH meter is an electronic instrument used to measure the pH (acidity or alkalinity) of a liquid. A typical pH meter consists of a special measuring probe (a glass electrode) connected to an electronic meter that measures and displays the pH reading. This would have given me more accurate readings.However I think titrations was the best strategy out of all the methods I had tried. It was extremely accurate and only little mistakes could be made. Although I did find a few outliers during my experiment. The biggest outlier I found was the first titration of the whole expermint which was a rough one, the result outcome was 24.30cm whereas the other results were between 25.00-26.00. This may be because the equipment werent cleaned put properly or the results werent read accurately. To make my results even more accurate I could have redone them, however with such a small difference I did not feel that it was not necessary. If I wanted to have strong results I could repeat these experiments where there would not be any outliers whatsoever.In conclusion, I think I chose the finest method to find out which antacid is the best solution to cure indigestion according to the equipment which was available. I tested other strategies and came to a conclusion that they werent accurate enough. Using a burette and pipette, secured my results and made them extremely reliable. My experiment was carried out carefully and precisely in order to get a fair result. Overall I believe my experiment was triumphant, and by the end of it I found out which antacid successfully combats indigestion.

Corporate Ethics from a Bottom-up View Point Research Paper

Corporate Ethics from a Bottom-up View Point - Research Paper Example In establishing an ethics program, a bottom-up approach is recommended (Brown, 2005). This entails engaging all the employees in the discussion and thinking about ethics. This makes it easier to implement as everyone in the company may feel that they had an input in deciding about ethics program. As fact, top-down nostrums are less effective in most organizations. They tend to perpetuate even further, the varied perception toward corporate ethics as perceived by the employees and the top management. Nevertheless, senior managers are known to influence the character and the scope of the organization’s corporate ethics program. They are charged with the responsibility of ensuring the integration of the ethics into the day-to-day routine of the organization. In general, senior managers have much to play in the successful implementation and management of ethics in an organization. Thus, their take and perception on ethics matters a lot. Research has evidenced that senior manager in most companies exhibit a more positive perception towards organizational ethics as compared to the lower level managers and employees. On the other hand, lower level managers and employees tend to be more cynical when it comes to business ethics in organizations. Thus, there is a clear contrast in perception towards organizational ethics between the two groups. Even so, many senior managers have proved to be ignorant of the ethical problems and matters affecting their organization. This plays a pivotal role in discouraging ethics as well as perpetuating the differences in perception towards ethics in most organizations.... Thus, there is a clear contrast in perception towards organizational ethics between the two groups. Even so, many senior managers have proved to be ignorant of the ethical problems and matters affecting their organization. This plays a pivotal role in discouraging ethics as well as perpetuating the differences in perception towards ethics in most organizations. On the other hand, a substantial number of lower level managers and employees perceive ethics programs, mission statements, codes of conducts among other ethics-related programs to be of little help or of no value to them. The employees also believe that the top managers usually are out-of-touch in matters concerning ethics. They believe that the top managers tend to avoid any discussion about ethics. According to Byron (2006), this is attributed to the fact they are too busy for ethical issues or they are just deliberately avoiding responsibility. There is also escalating tendency of cynicism of the lower level employees and the higher level managers. The lower level employees tend to psychologically distance themselves from the top managers in several instances. The positive perception towards organizational ethics as exhibited by senior management has been attributed to various reasons. Their social interaction and their role expectation is one of the reasons. Another reason is the link between the senior mangers identity and that of the organization. In this regards, senior managers usually play a significant role in the establishment of the organization reputation. According to Trevino, Weaver and Brown (2007), they tend to identify themselves strongly with the organization as well as its image. On the contrary, lower level managers and employees are less likely to identify themselves with the

Publi Pension Replacement Rates Essay Example | Topics and Well Written Essays - 500 words

Publi Pension Replacement Rates - Essay Example Even the marital status is a point of concern for some countries. The earnings level of the worker is also taken into account. This level dictates the amount of their contribution. The duration of membership of a worker in the pension plan is factored in in the replacement rate computation. Another cause of the variance is the type of employment, whether it is full-time or part-time. The public pension replacement rate was a major contributing factor in the debt burden of Greece. The average earner with a full career in an Organisation for Economic Co-operation and Development (OECD) country, of which Greece belongs, has a pension replacement rate of 58.7% of earnings (Organisation for Economic Co-operation and Development (OECD), 2007). However, in Greece, the replacement rate was at a high of 96% of earnings (OECD, 2007). This rate is considered to be very high. In 2010, Greece’s pension system had approximately 400 billion euros or $509 billion in unfunded liabilities (Oxford Analytica, 2010). The excessively high replacement rate forced the Greek government to make emergency grants to meet the pension outlays (Oxford Analytica, 2010). Nektarios describes the Greek public pension system as one which is â€Å"highly segmented and complex, containing over 300 funds, with many different regulations for pension rights† (n.d.). Because of these chara cteristic of the public pension plan, it was difficult for the government to manage. One proof that the public pension replacement rate contributed largely on the debt problem of Greece are the reforms in the pension plan that were instituted by the EU and the IMF. Some of these reforms that were dictated upon on Greece include introduction of a unified statutory retirement age of 65 by December 2013; the gradual increase in the minimum contribution period for retirement; and the reduction of pension benefits to be based on the pensioners average pay over their working lives

Design Distance Measurer Based On Fpga Information Technology Essay

Design Distance Measurer Based On Fpga Information Technology Essay There are variety applications in range finder devices. Their main use is in areas where traditional measuring devices such as rulers, tape measures and other measuring devices are impropriate. Nowadays, the traditional measuring device can be replace by modern measuring device such as distance measurer based on laser. It has been implemented in short range distance even long range distance. The idea for using laser for range finding came when we can see that contractor had many problems in measuring the distance of the building especially from the floor to the ceiling. When it came to very high ceiling, such as in hall, stadium even close sport-court, the use of rulers or tape measures really a waste of time even need very hard work. This can be classified as uses in low tech world but in the high tech world, this distance measurer based on laser can be use with binocular in military use, especially for sniper. The observer can get the real distance of the enemy where the sniper can snipe from very far distance. This project is designed to be a laser distance measurer of detecting the distance of the object (wall) up to 10 meter away. The design based on simple physics, the distance travelled between two locations can be easily calculated if the speeds of travel are known. This device calculates the time is takes for a laser travel to, rebound off and return from a stationary object 1.2 Problem Statement Before this, we measure the distance using ruler or measuring tape, so this project design is to help human being by saving time and effort so we can measure the distance faster than before. With the help of Field Programmable Gate Arrays (FPGA) and the laser sensor, the design is more advance with the one click system and we can get the distance measurement by no time. In military use, the project will help by saving the life of the sniper as well. 1.3 Objective of the Project The objective of this project is to design distance measurer based on laser using FPGA as the microcontroller of the design. 1.4 Project Scope This project paper will involve in the analysis and design distance measurer based on laser, and FPGA as the microcontroller. These concepts are: The user will press the button as input. The laser will activate and laser beam will go direct to the object or surface. Laser beam will hit the object or surface and reflected it back. The sensor will picks up the signal. The flight time from the start and end will be measured. The corresponding distance of the reflecting object or surface is displayed in digital which is in 7 segment display. A few things that need to be considered for this design are: Types of laser sensors. How the instrumentation operates. Output characteristic. Many more issues need to be taken for consideration and this issue will be approached further in the coming chapters. 1.5 Project Plan Generally, this project is divided into five main chapters; namely Introduction, Literature Review, Methodology, Results and Discussion and Conclusion. CHAPTER 1 discusses on project overview, problem statement, the objective of the project, the scope in order to achieve the objective of the project and the thesis outline. CHAPTER 2 will focus on the literature review of the theory of laser based distance measurer and its development. There are also detailed introduction of the project and the background of various types of FPGA controller, i.e. VHDL, Verilog-HDL, Altera Quartus.. CHAPTER 3 describes about the methodology that will be used in order to complete this project which include the design of laser distance measurer using FPGA as the controller. This will include the selection of the technique use to measure the distance using the laser and the program to be compile with the FPGA board. Furthermore, it also discuss about how the program work on the hardware so that the project with give the result that I want. CHAPTER 4 discusses on the simulation results obtained. The detailed discussion is made to verify the performance and characteristics of the project. It will also discuss the problems and findings throughout the design and simulation of the system. CHAPTER 5 reviews the project outcomes upon the completion. Some suggestions are also made for better improvement in the future so that if anyone want to continue this project for better performance, they will know the basic of how this project start.. CHAPTER II LITERATURE REVIEW 2.1 Distance measurement Distance is a numerical description of how the objects are apart. In physics or everyday discussion, distance may refer to a physical length, or an estimate based on other criteria. In mathematics, a distance function or metric is a generalization of the concept of physical distance (Distance, 2010). In science, measurement is the process of estimating or determining the magnitude of a quantity like length or mass, compared with a measurement unit, like a meter or a kilogram (Measurement, 2010). The measure term can also be used to refer to a specific result obtained by the method of measurement Distance measurement is a process where we need distance measuring instrument which can measure the distance if the distance is short or long. The SI unit for each measurement is the meter (m) but there are many units of length such as feet, yard, inches etc, but they are not classified as SI unit of length. Remote sensing using the light sensor is widely used for implementing mobile robot. The main attraction of the distance light detecting means is its user friendliness of how to use it without need knowledge about it. The measurement precision is somewhat limited and care must be taken to ensure that the environment is not subject to temperature changes and the sensor should not be confused by stray reflections from material adjacent to the target. Even with these limitations, laser range finder has a wide application especially when the target is far away and the action required is low. But sometimes the laser must be reflected after the laser strike any target, which means that if the laser hit a transparent material, the calculation cannot be done. But the light system based on distance measurement are inherently more accurate than ultrasound techniques because of the narrow beam angles commonly used and the restrictions of freedom inevitably fundamentally mechanical acoustic signal generation and detection. These are wide ranges of techniques that can be used to measure distance using light. These vary greatly in cost and function of the laser distance measuring system is very expensive in cost compared to the system for measuring distance using ultrasonic. 2.2 Optical Distance Measurement 2.2.1 Introduction Wide variety of industrial, commercial and research use optical sensor for distance measurement. Most sensors use visible or infrared laser beam to project a light spot on a target, the surface on which distance should be measured, the distance from the place back in the light detecting portion of the probe is measuring several ways There are several factors to consider when specifying a laser distance sensor. They include maximum range, sensitivity, target reflectance and specularity, accuracy and resolution and sampling frequency. 2.2.2 Definition Some of the terms that related to optical sensing (e.g. laser or ultrasonic) and distance measurement that must be take notes as some knowledge before the measurement can be done. Some of the knowledge that must be take notes is defined and described briefly here (Glossary of Laser Sensor Terminology, 2010). Target: When a laser pointed at some surface, the light is reflected into the detector in an optical sensor. This can refer to a surface or material designed to reflect light, in which the sensor is pointed. To determine the maximum range of a sensor, reflectance target is the most important factor Cooperative Target: A target or any material designed by the manufacture to reflect the light to a sensor detector. It also provides the return signal to the receiver input higher after the laser beam and more. Cooperative target include glass cube, reflectors corner, retro reflective tape and other material made by several manufacturers. In some applications, the mirror can also be used as targets of cooperation. Figure 2.1: Cooperative Target (Module 6) Uncooperative Target: The material is not specifically designed to reflect light onto the sensor while taking the measurement. Can be generally referred to an object that scattering light. The term is used because the target in return cannot be reflected beam, this includes metal or painted surfaces, liquids and solids or loose granular Figure 2.2: Uncooperative Target (Module 6) Retro reflection: The reflection of light off a target object or surface back in the direction from which it came, for a wide range of angle of incident, either it came in 180 ° reflection or any degree as long it reflect to it sources. It can be said that the retro reflection will produce minimum scattering light. Retro reflection is achieved through multiple reflections within a retro reflector. Retro reflectors include corner cubes and retro reflective tape. A high quality corner cube retro reflector will return virtually all the light entering it to its source. Corner cubes may be used to extend range hundreds or thousands of times over ordinary surfaces. A corner cube array was left on the moon to allow accurate measurement of its distance from the earth. Some of the example item that commonly being used in many applications is retro reflective tape. It typically consists of microspheres or cubes of glass or plastic which act like many tiny retro reflectors. Figure 2.3: Retro reflection Surface (Retroreflector, 2010) Diffuse Reflection: This terms is being use when a light strikes the target and scattered over a wide angle which mean the incident ray reflected in many angles.. Plain white paper of flat (not glossy) wall paint is good diffuse materials. It can be classified as the best uncooperative targets, and may be measured to over a wide range of incident angles (up to 80 degrees for some materials). Untitled.jpg Figure 2.4: Diffuse Reflection Surface (Diffuse Reflection, 2010) Specular Reflection: It occurs when the light strikes a shiny or mirror-like surface and is reflected away in one angle which is same to the angle it reflects. Glass, liquid surfaces and polished metal are specula and generally it needs a sensor configured specifically for specula surfaces. This behaviour is described in the law of reflection where it totally follows the law itself. Figure 2.5: Specular Reflection Surface (Specular Reflection, 2010) Reflectance: The amount of light reflected from the target, expressed as a percentage of incidents light. Diffuse reflectance refers to the amount of light scattered in all directions by a diffuse target. Specular reflectance refers to the amount of reflected light is reflected for example a mirror. Reflectance depends on the target color and composition and the frequency of light is reflected. Diffuse surfaces often vary from 3% to 95% reflectance. Many surfaces such as pain and glossy coated paper are diffuse and specular components of reflection Maximum Range: The maximum distance of sensors that picks up the reflected light and to obtain an accurate measurement of the distance. The maximum range may be limited by laser power, the amount of light reflected from the target and the sensitivity of the detector. It may also be limited by the measurement method used and the distance that the sensor is accurately calibrated Laser Power: It is the optical power level emitted by the laser sensor. The power can be specified as average power or peak power and average, if the sensor output pulses of intermittent light. If all other factors being equal, the maximum range increases in proportion to the square root of laser power, if power is multiplied by four, it will double the maximum range it can achieved. Laser power is expressed in Watts Mill (mW) or watts (W). Sample Rate: The frequency of a sensor updates its output range. The sampling frequency capability of remote sensors varies widely, depending on the measurement method that being used and the design of the devices. The sampling frequency can be as low as one sample every few seconds and run a million samples per second.. Response Time: It is the delay between the time changes in target position and the time changes of the sensor output. This may be more than one sample interval, if the sensor is processing or calibration of the intermediate samples during transmission of the previous sample and then taking the next measurement. Sensitivity: A measure of the ability to obtain a reading on a dark target or with low laser power. Sensitivity decreases at long ranges. Depth of Field: The span of distance over which a measurement sensor can measure distances accurately. This may be limited by the approach of light focus collection and the maximum distance that reflect enough light to the sensor. These two factors will determine how changes in the sensitivity of the sensor with distance. 2.2.3 Performance Of Optical Sensor On Specula And Diffuse Targets All sensors require a bit of laser light to the back surface of the target to operate. The amount of light needed is a measure of the sensitivity of the device. In general, the most sensitive devices are more expensive and accurate measurement of high sampling frequency requires more thought than for lower sampling frequencies. For diffuse targets, the higher the reflectance of the target, the best performance of a sensor will be. Lightweight materials such as wood, paper or white paint is non-cooperative targets that work well at all distances. The 50 darkest carbonaceous materials feet from a rangefinder can return only one ten-millionth of the light that reaches them at a rangefinder. The maximum range and depth of field can be limited to as little as 1.5 of what is possible with ordinary, light-colours surfaces. In addition to the amount of light a surface reflects the way light is reflected can affect the performance of an optical sensor. Many surfaces are partly specula and partially diffuse. These can be difficult to measure the amount of light reflected to a sensor may vary considerably with the angle of the target surface. 2.2.4 Accuracy, Repeatability and Resolution The accuracy of a sensor is a measure of the difference can be provided between the reading of a sensor and the actual distance measured. The resolution is the smallest change in measured distance. The resolution is the smallest change in the distance a sensor can detect and is usually a value smaller than the precision error. Accuracy can be affected by reflection from the target temperature, ambient light, which will generally not affect the resolution. Repeatability is the measure of the stability of the sensor over time. Generally, the sample repeatability sample will be lower for very fast sampling rates, because less time is used for measuring average. As the sampling frequency is lowered, the repeatability will improve, but this cannot continue indefinitely. Beyond some deceleration rate of the sample, the repeatability will start to get worse as the long-term drift in the components and changes in temperature cause changes in output of the sensor. 2.2.5 Spot Size and Divergence Other specifications which may be important are the laser spot size and divergence of the beam. Some applications require a small spot for high-resolution, measurement while others require a larger diameter spot of averaging rough surfaces or for eye safety concerns. 2.2.6 Visible and Infrared Lasers Both visible and infrared (IR) laser are used in distance measurement. For some applications, the advantage of being able to see the spot is an advantage, while others do not want the place to be seen. For some sensors, they have two versions of visible and infrared. IR versions are slightly more sensitive and more accurate than the version visible and IR models have a wider range of laser powers. 2.2.7 Class of Lasers 2.2.7,1 Class I It has no possibility damaging the eye. That is because of a low power of the output (in which eye damage case is impossible, even after the hours of exposure), or because of an enclosure preventing the access of the users to the laser beam during normal operation, any individual, independently of the conditions of exposure to the eyes or the skin, No one can expect to be wounded by a laser of class I. No requirements of safety are necessary to use with the devices of laser class. The lasers of class I are apparatuses with low power which are regarded as sure of all the potential dangers. Some examples of the use of the laser of class I are as follows: the printers laser, CD-ROM devices, the geological equipment of survey and the laboratory equipment of analysis (Laser Safety, 2010). Figure 2.6: Example of Class I Application Laser Printer (Application of Laser Product, 2008) 2,2,7,2 Class II Class II laser can damage the eyes of the person if deliberately looks in the beam for one prolonged period (i.e > 15 minutes). Power of output can be up to 1 mW. This category includes the lasers that emitting a visible light. Certain pointers lasers are in this category. The lasers of class II are of low power which is less than 1mW, lasers of the visible light which could cause damage with the eyes of a person. Some examples of laser use of class II are: demonstrations in class, the pointers laser, devices of aiming and the distance measuring equipment. Avoid looking in a laser beam of class II or pointing a laser beam of class II in the eyes of another person. Avoid looking at class II of the beams laser with telescopic devices. To carry out that the light of a laser beam of class II in the eyes causes a normal reaction to divert the glance or to close the eyes (Laser Safety Policy, 2010). Figure 2.7: Example of Class II Application Barcode Scanner (Application of Laser Product, 2008) 2.2.7.3 Class IIa Laser class where it is in the low-power output of Class II ans the laser requires in excess of 1000 seconds of continuous viewing to produce a burn to the retina. Commercial laser scanners are in this subclass (Laser Safety, 2010). Figure 2.8: Example of Class IIa Application Laser Disco Light (Starfield Projector, 2007) 2.2.7.4 Class IIIa The lasers of class IIIa are from continuous wave. The lasers in this class are most of the time dangerous in combination with the optical instruments which change the density of diameter or power of beam. The power of the output is not exceeding 5 MW. The density of power of beam cannot exceed 2.5 mW/square centimetres. Many sights of laser for weapons with fire and indicators of laser are in this category of devices with intermediate output power (1-5 mW). Some examples of the uses of laser of class IIIa are identical to that laser of class II with the most popular uses being indicators of laser and modules of laser scanner. The direct viewing of the laser beam of IIIa of class could be dangerous with the eyes. Directly do not look at the laser beam of IIIa of class (Laser Safety, 2010) . Figure 2.9: Example of Class IIIa Application Military Equipment (Marushin M16A1) 2.2.7.5 Class IIIb The lasers in this class can damage if the beam enters the eye directly. This generally applies to the lasers actuated starting from 5-500 mW. The lasers in this category can damage permanent eye with exposures of 1/100th one second or less according to the force of the laser and the lasers at the end of high power of this class can also present a fire hazard and can slightly burn the skin. A diffuse reflection is generally not dangerous but the specular reflections can be like dangerous that is direct exposures. All times that occupying a control field of laser, carry the suitable protection of eye. Protective Eyewear is recommended when the direct viewing of beam of the lasers of IIIb of class can occur. Some examples of the uses of laser of IIIb of class are spectrometry, stereo lithography, and the light of entertainment shows (Laser Safety Policy, 2010). Figure 2.10: Example of Class IIIb Application Military Equipment (Azari, 1998-2009) 2.2.7.6 Class IV The lasers of class which is the majority of entertainment, industrialists, scientists, military and medical are in this category. Some examples of use of laser of class IV are surgery, research, drilling, cutting, welding, and the lasers micromachining in this class produced powers moreover than >500mW or pulsed of >10 J/cm2 in the beam and can damage considerably and permanent the eye or the skin without being magnify by optical system of eye or instrumentation. It can be dangerous to peel or observe diffuse reflexions of the laser beam in the nominal zone of risk. The lasers of class IV are devices of high power. The direct beam and the diffuse reflections of the lasers of class IV are dangerous with the eyes and the skin. The devices of laser of class IV can also be a fire hazard according to the reaction of the target once struck. Orders much larger are required to ensure the sure exploitation of this class of the devices of laser. All times that occupying a control field of las er, carry the suitable protection of eye. The majority of the damage of eye of laser occur reflected beams of the light of laser of class IV, thus maintain all materials reflective left the beam. Do not place your hand or any other part of body in the laser beam of class IV (Laser Safety, 2010). Figure 2.11: Example of Class IV Application Laboratory Equipment (Oxford, 2009) 2.2.8 Method of Measuring Distance Based On Laser Lasers can be used in various ways to measure distances or travel without physical contact. Laser length measurements allow the most sensitive and accurate records for extremely rapid and larger measurement ranges, even if these qualities are usually not combined with a single technique. According to specific requests, very different technical approaches may be appropriate. Some laser applications such as in architecture, inspection of manufacturing facilities, crime scene investigation (CSI), and the army (Paschotta D. R., 2010). 2.2.8.1 Triangular Measurement Method It exploits the ability of a laser beam to propagate in a well-collimated form (ie with small divergence) over long distances. In a typical case, the laser beam illuminates a point and the laser is essentially used as a pointer. Diffuse or specular reflections of this item are followed by a detector that is mounted in a distance from the laser beam, so that the laser source, object and detector form a triangle. The principal is same like the ship trying to find the distance from the shore (Encyclopedia of Laser Physics and Technology, 2010). Figure 2.12: Triangulation Method (B., C., D., 2010) The high detection rate, it is possible to control the position of a moving or vibrating example: part of some machines. The precision obtained is very accurate compared with other devices. For diffuse reflections, the distance may be limited by the obligation to receive a sufficient amount of reflected optical power, with specular reflection, a greater distance can be measured, but a sort of angular alignment is required (Paschotta D. R., 2010). 2.2.8.2 Time-Of-Flight Measurement Method Time of flight measurements are often used to measure a distance, used for example in an airplane, possibly in the form of laser scanning radar. Here, a device sends an optical pulse and measure short time until a reflected portion of the pulse is controlled. The distance is then calculated using the speed of light. This method usually used for measuring distance, like hundreds of meters or several miles. By using advanced techniques (involving high-quality telescopes, very sensitive photo detector, etc..) With the precision of a few centimeters, it is possible to measure e.g. the distance between Earths and to obtain an accurate profile of a dam. Over time, measures are preferably used in flight for long distances, the beam quality of laser source is crucial. For large distances, high pulse energies are required. This may raise issues of laser safety, especially if the laser wavelength is not in the eye safe region. For nanojoule to microjoule pulse energies (as required for medium distances), it is possible to use a chip laser passive Q-switched Er: Yb glass, which can generate pulses rather short (the duration of the order of 1 ns) with pulse energies of Yb: about 10 ÃŽÂ ¼J in the spectral region to eye safety (Paschotta D. R., 2010). 2.2.8.3 Phase Shift Measurement Method The method of phase shift usually use in laser rangefinders, a technique for measuring distances in the following manner. A laser beam with sinusoidally modulated optical power is sent to a target. Some reflected light (diffuse sources or specular reflections) is monitored, and phase modulation power is compared to the light sent. The phase shift obtained is 2à Ã¢â€š ¬ times the time of flight time frequency modulation. This shows that higher modulation frequencies can result in better spatial resolution. Although the phase shift is directly proportional to the duration of the flight, the length of time of flight method should be reserved for cases where one really measures a delay time more directly. Figure 2.13: Phase Shift Method (Dixon Henlich, 1997) With regard to an interferometer, the phase shift method has an ambiguity in the distance, because with the distance from the phase varies periodically. However, the frequency is much greater than in an interferometer, since the frequency modulation is much smaller than the optical frequency. In addition, ambiguity can be easily removed, for example, by measuring with two different modulation frequencies. 2.3 FPGA Field-programmable gate arrays (FPGA) are ICs that contain an array of identical logic blocks with programmable interconnections. It also can be classified as one of the programmable logic device (PLD). There are also some other type of PLD which is Simple Programmable Logic Device (SPLD) and Complex Programmable Logic Device (CPLD). The user can program the function realized by each logic block and the connections between the blocks. FPGAs have revolutionized the way prototyping and designing are done. The flexibility offered by reprogrammable FPGAs has enhanced the design process. There are a variety of FPGA products available in market now. Xilinx, Altera, Lattice Semiconductor, Actel, Cypress, Quick Logic and Atmel are examples of companies that design and sell FPGAs. 2.3.1 DE2 Board Figure 2.14: DE2 Board Model EP2C35F672C6 (DE2 Development and Education User Manual) The following hardware is provided on the DE2 board: Altera Cyclone ® II 2C35 FPGA device Altera Serial Configuration device EPCS16 USB Blaster (on board) for programming and user API control; both JTAG and Active Serial (AS) programming modes are supported 512-Kbyte SRAM 8-Mbyte SDRAM 4-Mbyte Flash memory (1 MByte on some boards) SD Card socket 4 pushbutton switches 8 toggle switches 18 red user LEDs 9 green user LEDs 50-MHz oscillator and 27-MHz oscillator for clock sources 24-bit CD-quality audio CODEC with line-in, line-out, and microphone-in jacks VGA DAC (10-bit high-speed triple DACs) with VGA-out connector TV Decoder (NTSC/PAL) and TV-in connector 10/100 Ethernet Controller with a connector USB Host/Slave Controller with USB type A and type B connectors RS-232 transceiver and 9-pin connector PS/2 mouse/keyboard connector IrDA transceiver Two 40-pin Expansion Headers with diode protection 2.3.2 Block Diagram of the DE2 Board Figure 2.15: Block Diagram of DE2 Board Model EP2C35F672C6 (DE2 Development and Education User Manual) 2.3.3 Cyclone II Altera Cyclone II FPGA density range has 68,416 logic elements (GE) and provide up to 622 usable I / O pins and up to 1.1 Mbits of embedded memory. Cyclone II FPGAs are manufactured on 300mm wafers. The low cost and optimized feature set of Cyclone II FPGAs make ideal solutions for a wide range of automotive, consumer, communications, video processing, test and measurement, and other end-market solutions. Devices that support the Fast-On feature are designated with an A in the code of the controller. The EP2C5A is only available in the class of vehicle speed. The EP2C8A and EP2C20A are only available in the category of industrial speed. The EP2C15A is only available with the Fast-On feature and is available in both commercial and industrial categories. Figure 2.16: DE2 Board Model EP2C35F672C6 (DE2 Development and Education User Manual) 2.3.4 Evolution of Programmable Logic An FPGAs has grown in the past twenty years since the introduction. In the early 1970s, Programmable Logic Devices (PLDs) had been on the market. These devices used two-level logic structures which are AND plane as the first level of logic which generally fixed while the second level known as OR plane which is programmable. Figure 2.17: Some Example Of PLD Basic Circuit (David, 2006) 2.3.5 FPGA Types Configuration Technology Technology Overview And Features SRAM Based An external device program the device on power up. It allows fast reconfiguration. Configuration is volatile. Device can be reconfigured in circuit. Anti-Fuse Based Configuration is set by burning internal fuses to implements the desired functionality. Configuration is non volatile and cannot be changed. EPROM based Configuration is similar to EPROM devices. Configuration is non-volatile. Device must be configured out of the circuit. EEPROM based Configuration is similar to EEPROM devices. Configuration is non-volatile. Device must be configured out of the circuit. 2.3.6 Advantages of FPGAs However they have compensating advantages, largely due to the fact that they are standard parts. FPGA has larger capacity, more architecture and more register than other PLD. It is because the FPGA is the evolution of the PLD before it. There is no wait from completing the design to obtaining a working chip. The design can be programmed into the FPGA and tested immediately. FPGAs are excellent prototyping vehicles. When the FPGA is used in the final design, the jump from prototype to product is much smaller and easier to negotiate. The same FPGA can be used in several different designs, reducing inventory costs. 2.3.7 Disadvantages of FPGAs FPGAs are not custom parts, so they arent good at any particular function as dedicated chip designed for that application. FPGAs are generally slower and burn more power than custom logic. FPGAs are also relatively expensive. 2.3.8Types of FPGA Reprogrammable (SRAM-based) Xilinx, Altera

Enriques Journey Essay

Just as Enrique arrives, there is tension between his mother and him. They begin to argue about how Enrique had developed bad habits such as drinking and staying out late as well as sniffing glue. These problems do not surprise me because he had been through alot on his intense journey all the way from Honduras. It hurt Lourdes to see her son do nothing but hurt himself and her family because the money he was spending on alcohol should have been sent back home to help pay for school. Enrique also put his mother down by constantly making her feel guilty for leaving and that she did not deserve to call herself his mother. Looking back at the relationship between them before she left, I thought that their relationship would have been stronger than ever after not seeing each other for years and that he would appreciate the fact that he found her unlike many of the other immigrants that search for years and are still unable to find their family members. Enriques motivation to stay in the United States is work and buy a house back in Honduras not to mention the amount of money he is making allows him to afford a lot more than he could back in Honduras. He wishes to continue working so he can support his girlfriend and his daughter back home in Honduras as well as buy a house so that he can move in with his girlfriend and daughter and finally be a family. He thinks that his girlfriend is cheating on him and he realizes that he wants to be there for his daughter and raise her before she calls someone else her father. Rather than Enrique moving back home he decides that he wants his girlfriend and the baby to move to the United States with him. I believe that there is so much conflict between Enrique and Lourdes is because Lourdes is trying to mother and discipline Enrique when she was not there raise him so he feels as if she is not his mother anymore. If she had not left and raised her family as her own they would not have any problems with their relationship and most likely Enrique would have not got himself into trouble by abusing drugs and drinking too much. I believe once Enrique begins to pick up his act and stops abusing drugs and drinking and coming home late his relationship with his mother would become better as well as eing able to function the next day and able to perform well at work so he can earn enough to visit his family back home in Honduras. I believe that Enrique made the correct decision coming to the United States, although he put his life in danger he reached his goal and finally got to see his mother after many years. Despite making the same mistake as his mother and leaving his girlfriend and daughter for a job to help pay for their needs, I believe it is necessary because if Enrique was back home there was a chance he could not have even had a job and then he would have had no way to support his family. He gained many things by coming to the United States. He had an opportunity to provide a decent living for his family as well as reuniting with his mother even though it was not easy for them at first. Enrique, on his journey, lost his sense of pride. After being harassed by so many times by the local police, he had nothing left to the point where it would have made no difference if he had died. He is in jeopardy of losing his family being many thousands of miles away from them, his girlfriend could leave him for someone who is making a better living in Honduras and would be able to be there to help raise their kids.

Quality Management for Organizational Excellence: Total Quality Pioneers Essay

In this paper, Philip Crosby will be discussed as one of the pioneers of total quality. Quality will be defined and also total quality will be discussed about how each contributed to Philip Crosby’s success. Additionally, it will be explained why quality is useful in today’s business environment. Quality and Total Quality Defined In today’s world the majority of consumers require their products and services have quality. Quality is performance to the standard expected by the customer, meeting customer needs the first time and every time, doing the right thing right the first time (Goetsch, 2010). Quality is defined as â€Å"a dynamic state associated with products, services, people, processes, and environments that meets or exceeds expectations and helps produce superior value† (Goetsch, 2010, p. 5). The dynamic state of quality will change in the future as time goes on. Total quality is the collective quality concepts pulled together as one comprehensive approach to conducting business (Goetsch, 2010). Total quality is achieved through strategy, obsession with quality, teamwork, education and training, employee involvement, and customer focus in addition to many other aspects of quality. If any element of total quality is not present, then total quality has not and cannot be achieved. Philip Crosby Philip Crosby was a director for ITT Corporation for 14 years until 1979 when he opened his own company called Philip Crosby Associates. Philip Crosby Associates was an international consulting firm on quality improvements for businesses. Crosby defined quality as conformance to requirements and was known for his theory of zero defects management and prevention. Crosby also introduced Quality Vaccine that consisted of three ingredients: 1) Determination, 2) Education, and 3) Implementation. Many companies and managers also use Crosby’s concept of â€Å"doing it right the first time† (Boti, 2011). With conformance to requirements, quality is considered customer satisfaction and compliance with certain standards is required. Crosby’s zero defect management sets the standard that errors are not tolerated, and there are no acceptable levels of non-quality; hence doing it right the first time (Boti, 2011). Prevention, as Crosby describes, is â€Å"quality should not be controlled, it must be done† (Boti, 2011, pg. 205). Last, quality measure is the cost of non-compliance with quality. Quality Today and the Future Organizations that apply Crosby’s quality management concepts to their business strategies have demonstrated they can remain successful in the business environment. Crosby’s values of understanding the importance of employee and customer education have helped to create consistency in quality, increase productivity, increase profitability, and customer satisfaction. Companies using outdated management approaches are missing opportunities for innovation and growth. Organizations that understand and embrace the dynamic element of quality management will be prepared for the ever changing environment and unknown circumstances that may arise. The future for businesses that have managed the trends in quality will have a better competitive advantage to those who do not. Conclusion Elements of quality may differ from person to person and is constantly changing. Organizational awareness of changes is essential to remain competitive and necessary to produce a better quality product. Long-term success of a business is driven by quality and an organizations ability to continuously improve the quality of its product or service.