Thursday, October 31, 2019

Chinese Journalism Essay Example | Topics and Well Written Essays - 2000 words

Chinese Journalism - Essay Example In the earlier days, printed media forms were generally used for publishing journals however based on the current trend of technological upliftment, the publishing style in the current days has shifted towards the implication of digital media. For instance, in the present days, almost every type of journal articles can be found on the World Wide Web (WWW). Apart from these, the concept of professionalism finds significant level of importance when it comes to safeguarding the integrity of the journalist. As a matter of fact, any individual can post or write about anything. However, the level of attention which that online written content will attain mainly depends on its writing quality and the quantity of justifiable facts which have been included into it. The objective of this report will be to understand the factors which have resulted in the lack of professionalization within Chinese journalism on the basis of aspects which include Political Neutrality, Objectivity and Autonomy. The comparisons will be made in context to that of the North American ideals. The foremost part of the discussion will comprise facts that will reflect the trend of Chinese journalism. The present topic describes that the journalism trend followed in China is highly unprofessional in comparison to that of the North American journalism ideals. As projected by Zhaoc, Chinese journalism is acquainted of being instrumentalized and regulated by bureaucracy and the political pressure. In simple words, the concept of independence within work appears to be less preferred within China (143-174). Besides, multiple instances seemed to have occurred where the concept of paid journalism has been put to practise for reasons such as data enclosement or negative reviewing of multiple business processes. For instance, according to the legal obligation mentioned in the ‘Article 35’ of Chinese Constitution, every individual within this nation has the

Tuesday, October 29, 2019

International Production and Trade Essay Example | Topics and Well Written Essays - 750 words - 1

International Production and Trade - Essay Example As a result of this shift, the United States and much of Western Europe aligned itself with a free market capitalist system whereas the Soviet Union and many parts of the remainder of the world aligned themselves with socialist communism. As a result of this bipolar powershift, the capitalist nations throughout the world realize that one of the only ways to ensure that wealth generation and sustained growth could proliferate was by engaging in a system of capitalism that prized reductions in trade barriers and liberalize nations in trade. The authors further specify the fact that this desire to reduce trade barriers and liberalize trade was ultimately the impetus which helps to give rise to such global entities as GATT, WTO, and the World Bank. Yet rather than each and every nation throughout the world integrating their economies and seeking to provide goods and services with little to no trade barriers, a somewhat different dynamic has been realized. As such, the difference between theory and practice is denoted by the authors with respect to the way in which different trade blocs and trade alliances have developed between the regions and entities throughout the globe. As such, whereas the world might have been previously defined based upon religion and/or ideology, nationality, ethnicity, or any other litany of different qualifiers, the modern world has largely been defined with regards to which nations agreed to a level of unimpeded trade. What this has ultimately affected is a situation through which the world has come to be redefined based upon trade and not based upon many of the other qualifications that had previously constrained and defined the way in which nations have interacted historically. After the collapse of the Soviet Union, this particular trend has only been increasing as more and more nations throughout the globe seek to develop their own trade blocs and alliances in something of a macro form of protectionism. Evidence of this can of course be seen with regards to the way in which the EU, NAFTA, and ASEAN treaties now exists which helped to promote trans regional trade and block the advances of true international liberalism that might otherwise helped to differentiate and grow these respective economies. As a result of this particular approach, the authors discuss the way in which this dynamic shift has encouraged specialization with regards to different industries and regions/economies. Moreover, as well has been generated and regions of the world have come to supply the raw material for finished goods and services in other parts of the world, the authors note the fact that many individuals view this as something of a neo-mercantilist system. Although this is not quite the case, the comparisons are nonetheless existence and should not be dismissed out of hand. As the more wealthy nations, represented by powerful trade alliances and blocs are able to outsource their unskilled labor and raw material extraction to poore r nations, the benefits of these inputs are realized on both entities. Whereas the neo-mercantilist would point to the fact that these nations are being taken advantage

Sunday, October 27, 2019

Development of Sustainable LED Lighting for Offices

Development of Sustainable LED Lighting for Offices CHAPTER 1 INTRODUCTION 1.1: Study Background Climate change is rapidly increasing in our environment due to an increase in gases such as carbon dioxide and methane produced by humans and animals in the Earths atmosphere. As humans we have a moral responsibility to control and save the environment. The built environment is one of the major impacts towards greenhouse gas emissions. Designers are now pressured to design sustainable buildings that have less impact on emissions that damage the environment. The term sustainability means to save natural resources for future generations. Many buildings indirectly use resources such as fossil fuels which are converted into energy. Lighting systems in buildings consume some of this energy. Lighting accounts for around 15% of the energy bill in most homes, and around 25% in commercial buildings. It is supplied by electrical power plants using fossil fuels, and is responsible for a significant percentage of carbon dioxide emissions (Marshall 2009) To help combat how we as consumers use electric lighting an alternative can be achieved via sustainable lighting. Sustainable lighting can be defined as, Lighting that meets the qualitative needs of the visual environment with the least impact on the physical environment. (Service Lamp Corp. 2001) Light is an electromagnetic radiation, which means it is partially electric, magnetic and radiates.   Light starts off from atoms (electrons that orbit the nucleus). When energy is absorbed by an atom the electrons shift up to a bigger orbit. When the atom loses the energy the electrons shift back down to the original orbit, while the electrons shift back down they emit light in the form of electromagnetic radiation. (Sarlina 2009) This document will review material on lighting systems in the office environment. The document will start with a brief history of the light bulb and then go on to how humans interpret light. The document will discuss how LED technology would be utilised more in offices and discuss the importance of migrating to LED lighting systems in offices for a more sustainable environment. The thesis will include three known case studies on LED lighting installed in offices to gather and compare data in order to evaluate how LED lighting would suffice in real life environments. 1.2: Brief History The history of modern lighting starts off with the invention of the arc light in 1810 by Humphrey Davy. This worked by connecting a battery to a strip of charcoal using two wires. The strip of charcoal was charge with electricity and glowed. (Jacks 2003) In 1820 Warren De La Rue used a piece of platinum placed inside a tube.   A current was passed through the tube and the platinum lit well but the bulb did not go into production because platinum was very expensive. (Jacks 2003) A chemist and physicist Joseph Wilson Swan produced a workable electric light in 1860 which he patented as an incandescent light bulb with a filament made from carbonised paper within a partial vacuum. J. W. Swan improved on the invention in 1875 he changed the filament to a compressed and carbonised fibrous cotton thread filament. (Jacks 2003) An inventor called Thomas Alva Edison bought Josephs Swans patent from a company who owned the patent.   Thomas Edison worked on the light bulb to increase the life span. In 1880 Thomas Edison invented his Bamboo fibre filament lamp which lasted for 1200-1500 hours. (Jacks 2003) In 1903 Willis Whitnew invented the tungsten filament lamp (commonly used today). The tungsten lamp had a carbon filament with a metal-coating. This stopped the problem with the bulb turning dark as Thomas Edisons bulb did. (Jacks 2003) Technology today has advanced to new methods of lighting. Light emitting diode (LED) technology is now at the centre point of attention as LED lighting has many advantages with being very energy efficient, long lasting and produces less heat compared to standard incandescent or halogen bulbs. 1.3: Dissertation Structure The dissertation is divided into a sequel of five chapters. The first chapter focuses on climate change and the need to for a more sustainable built environment, a brief history into the light bulb, aims and objectives of this dissertation and the logic behind the dissertation. Chapter two is a detailed literature review which focuses on the effects of lighting on building occupants followed by government legislation, then comparing different types of lighting and leading onto research on LED technology. The information gathered is sourced from websites, government documents, books and scientific journals. Chapter three follows on from the literature review. This chapter focuses on the structure for the dissertation; firstly explaining the reason for using a literature review and then drawing on three major case studies have been chosen and all cases deal with LED lighting systems within office spaces. From the case studies the author has analysed and interpreted information.   The primary data gathered will be in the form of a qualitative questionnaire sent to lighting experts (via email) who have been involved with the case studies. The Answers have been analysed and compared to get a wide knowledge from accredited professional opinions. The fourth chapter researches into the three chosen case studies, all case studies are analysed and compared to give an overview of how effective having an LED lighting system is in an office environment. The fifth chapter discusses the results gathered from the findings. This would give an overview to the dissertation and show the key findings into answering the key questions. The final chapter will draw up conclusions as to the impact of LED lighting in office environments. The chapter addresses the original research question in the context of the findings and provides final conclusions on LED lighting and making use appropriate references where necessary. 1.4: Aim and Objectives The author has chosen sustainable LED lighting as the subject area in this dissertation. The question the author would like to propose will be: Why arent there enough office buildings using LED lighting systems? Also what effects do LED lighting have on users working in an office environment; would LEDs be beneficial for health and comfort on a psychological basis? To address the question the author will explore this main aim: The aim of this study is to research into the sustainability of LED lighting systems and how lighting can affect building users within an office environment. The author will aim analyse case studies on LED lighting systems in offices. What are the advantages and disadvantages? How would an LED lighting system be best suited for the office environment in terms of efficiency, comfort, reliability and short long term costs? The author will interview people from case studies drawn to gather primary qualitative information to reach a final conclusion. The actions the author will take to help answer the research question are listed below: Literature review, take into account of the building regulations, effects of artificial lighting on building occupants, types of artificial lighting and researching into books, case studies, reports, journals and websites related to LED lighting and other sustainable lighting systems. Research case studies on LED lighting systems that have been installed in offices. This would give the author an insight on how LED lighting systems have been successful in a real life environment. Interview researchers from case studies. Ask questions about how LEDs are designed to fit in a working office environment. Any issues that have occurred within the buildings. 1.5: Hypothesis In the United Kingdom there are very few offices if any that use an LED lighting systems to light up an office space. This could be due to lack of awareness, economic climate, social environment and lack of technology available to solve prob lematic conditions. 1.6: Key questions 1. How does light effect building users in terms of health? 2. How would LED lighting benefit offices and the environment? 3. Why isnt there many offices using LED lighting systems? 4. What is the current market like for LED lighting? Would there be a future for more LED lighting in offices? CHAPTER 2 LITERATURE REVIEW 2.1: Introduction This chapter researches into the effects of lighting on buildings occupants, legislation, different types of lighting and LED technology in detail. The aim for this literature review is to obtain information on how light is transcribed in the circadian system and the effects of light on human health. Legislation is a key issue for lighting. it regulate on the amount of light required for the appropriate tasks usually attained in different buildings, by learning legislation it would give the author an understanding into what requirements an office would need for good lighting. All information collated are from secondary and tertiary sources; for this literature review the information is found in books, journals, web pages, and government documents. 2.2: Effects of lighting on building occupants Lighting affects all building occupants on the way they perform tasks. There are different levels of lighting in different environment; the colour of light used in offices would tend to have a blue-white colour to promote concentration and light used in public areas would be a warmer yellow colour so building occupants would feel more relaxed in this type of environment. Too much light can cause health problems such as increased stress levels, headaches and higher blood pressure to the building occupant. (H.E.S.E, 2009) (Boyce, 2003 pp. 160) stated that Most apparently visual tasks have three components; visual, cognitive, and motor. Every task is unique in its balance between these components and hence in the effect lighting conditions have on task performance. (Boyce, 2003 pp. 160) also stated that Lighting conditions can affect task performance throught three systems, the visual system, the circadian system, and the perceptual system. the impact   of lighting conditions on the visual system and hence on visual performance is determined by the size, luminance contrast, and colour difference of the task and the amount, spectrum, distrbution of the lighting. The point that   (Boyce, 2003) makes is that light sent to the visual system affects the performance of the information relayed in the brain.   (Cuttle, 2008 pp. 5-6) stated The optical system of the human eye focuses an inverted image onto the retina, shown in Figure 1. This image is constantly changing with movements of the head and the scanning movements of the eyes. It is often said that the eye is like a camera, but the only similarity is that it forms a focused image in which, for every pixel, there is a corresponding element in the luminous environment. The distribution of luminance and colour that comprises the retinal image is modified by light losses that occur in the optical media of the eye, and these losses are not constant as they increase significantly with age. (Cuttle, 2008) Both books express points about how light is interpreted in the human brain differently but they both correlate how light can affect a building occupant. They both state how light is interpreted in the visual system. A research journal on Light Much More Than Vision written by Mark. S. Rea (Ph.D.) Discuses how lighting can affect the circadian system in building occupants. The journal questions if offices, school and homes are providing good lighting practises. The journal begins with an abstract on the impact of light on the circadian system The amount of light, its spectral composition, spatial distribution, timing and duration needed for vision is so different from that needed for circadian functioning, that generalizations about good lighting will have to be assessed by two very different sets of criteria in the future. (Mark. S. Rea, 2007) The journal continues on how light is interpreted in the human circadian system Light is presently and formally defined as optical radiation entering the eye that provides visual sensation. An international system of photometry has been developed and institutionalized to quantify, measure and communicate the properties of light as it affects the human vision. (Mark. S. Rea, 2007) This statement explains how light is communicated in human vision.   Practical sources of light allow humans to read material, move around spaces, drive cars, create social interaction between other users and allow user to do other activities. Under spatial distribution the journal states Through optical refraction by the cornea and lens in the eye and by neural-optical enhancements by in the retina, the spatial distribution of objects and textures in the environment can be processed by the visual system. Arguably accurate rendering of the spatial distribution of light in our environment by our retina is essential to our survival because   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   patterns of light and dark provide information needed by the visual system (Mark. S. Rea, 2007) The journal concludes with So, Are we providing healthy light in our offices, schools and homes? Probably the answer is No, we are not. Certainly we are not providing or specifiying the ideal lighting technologies and applications for the circadian regluation (Mark. S. Rea, 2007). This would bring on the question as to wether LED lighting would provide the answer to good lighting. LED has been evolving for years, they have been specifically modified to provide comfortable lighting levels for which a user could carry out certain visual functions. 2.3: Legislation The Kyoto agreement is a protocol made by the United Nations Framework Convention on Climate change. This main aim of the protocol is to stabilise greenhouse gas emissions. There are four greenhouse gases that the protocol focuses on (carbon dioxide, nitrous oxide, methane, sulphur hexafluoride). The United Kingdom Government is legally tied to the Kyoto agreement and has set out targets to meet emission rates. A document on The Kyoto Protocol by British-Energy states The UKs commitment under the protocol is for a reduction in greenhouse gas emissions of 12.5% from 1990 levels by 2008-2012. This implies an 8% reduction in CO2 emissions over this time period. The UK government also has an aspirational target for itself of a 20% reduction of CO2 emissions by 2010, demonstrating the importance of this issue for the current government.(British Energy, 2009) Offices contribute towards the CO2 emissions given off around the planet. A lot of the energy used in offices is mainly caused by office lighting. The new advancements in LED lighting could reduce the amount of energy used because LED lighting is the most sustainable type of artificial lighting. This could help aid the efforts of the Kyoto Protocol and help meets emission targets. Approved Documents Part L of the building regulations is split up into four documents. Part L1A and L1B focuses on conservation of fuel and power in domestic buildings, part L2A and L2B focuses on conservation of fuel and power in non domestic buildings. As of 6th April 2006 the revised Building Regulations Part L Conservation of Fuel and Power came into effect. The updated regulations would improve energy standards by 40 percent from that of the 2002 Building Regulations (ODPM, 2006). There are four approved documents published by the Office of the Deputy Prime Minister (ODPM, 2006): Approved Document L1A: Conservation of fuel and power (New dwellings) (2006 edition) Approved Document L1B: Conservation of fuel and power (Existing dwellings) (2006 edition) Approved Document L2A: Conservation of fuel and power (New buildings other than dwellings) (2006 edition) Approved Document L2B: Conservation of fuel and power (Existing buildings other than dwellings) (2006 edition) L1 Domestic buildings Conservation of fuel and power in dwellings. Limiting heat loss through fabric of dwelling from hot water pipes used for space heating. Limiting heat loss through hot water vessels and service pipes. Use control systems on space heating and hot water systems so that energy can be used efficiently. Use control systems on lighting systems so that energy can be used efficiently. L2 Buildings other than dwellings Conservation of fuel and power in non domestic buildings. Limiting heat loss through fabric of dwelling from hot water pipes used for space heating. Limiting heat loss through hot water vessels and service pipes. Use control systems on space heating and hot water systems so that energy can be used efficiently. Providing lighting systems with sufficient controls so that energy can be used efficiently. Limiting exposure to solar heat gains. Use control systems on air conditioning and mechanical ventilation systems so that energy can be used efficiently. Commissioning the building engineering services so that they make efficient use of energy and recording their performance. Approved Document L2A: Conservation of fuel and power highlights what is required for lighting efficiency in offices, industrial and storage areas in all building types. The document states For the purposes of this Approved Document, office areas include those spaces that involve predominantly desk-based tasks, including classrooms, seminar rooms and conference rooms, including those in schools. Reasonable provision would be to provide lighting with an average initial efficiency of not less than 45 luminaire-lumens/circuit-Watt as averaged over the whole area of these types of space in the building. (ODPM, 2006 pp. 19) LED lighting has the potential to excel past the average guide for initial efficiency of 45 lumens per watt. A breakthrough from the lighting company CREE states LED efficacy test results that set a new benchmark for the LED industry. Cree reported results of 131 lumens per watt white LED efficacy, confirmed by the National Institute of Standards and Technology in Gaithersburg, Maryland. Tests were performed using prototype white LEDs with Cree EZBrightâ„ ¢ LED chips. (CREE Inc, 2009) The CIBSE Lighting Guide 7: Office Lighting gives a guidance of how to layout lighting systems within an office to give the maximum efficiency of lighting and how much light is required for different types of office spaces. The guide states There are many ways to light an office space: with direct light down from above, from indirect light bounced from the ceiling, or from a combination of both. Many factors will dictate or influence the choice of which technique to use.   (Ruffles, 2005 pp. 7) There are many different building types and each office would need a lighting system that is individually specified. There are different types of lighting systems that give off different light intensities. The lighting guide states that a typical office space would need 500 lux (illuminance) for building users to take on paper-based or mixed tasks comfortably and 300 lux for any screen-based work. (Ruffles, 2005) Figure 2 shows the required amounts of light need for building user to work within different types of offices spaces, taken from the office lighting guide. The figures suggest that each typical office space would need 300 lux for screen based tasks, normal meetings and reception administrative tasks and 500 lux for more intense tasks such as paper-based, reading documents and writing. In a more deep-plan area the office space is required to have 500-750 lux throughout to perform multiple tasks comfortably. This is due to the fact that deep-plan areas are more towards the middle of office spaces or more than six meters away from windows; they would require a more constant flow of artificial light. This is where LED lighting may be at best because of the amount of electricity LED lighting systems take are very minimal and could deliver the required amount of light depending and the type of fixture. In normal deep-plan areas artificial lighting systems are on for longer periods because natural lighting coming in from windows would not penetrate throughout the office spaces. The corporation Philips suggests that a higher powered LED light would deliver up to 220 lumens. This type of LED would typically consume four watts. A typical deep-plan office space would require three high powered LED lights to deliver a comfortable amount of light for a user to perform various tasks, which would still consume less electricity compared to other office lighting systems. 2.4: Types of lighting There are many types of lamps that are currently used in different environments. These lamps include the incandescent lamp, compact fluorescent lamp, fluorescent lamp, halogen lamp, metal halide lamp and light emitting diodes. Incandescent lamps An incandescent lamp is a glass (See figure 3) bulb containing a thin filament. A current is passed through the filament, which heats up the filament until light is produced. (Philips, 2000 pp.49-50) stated The earliest filament lamps as developed by Swan in the United Kingdom and Edison in the United States had a short life of only 150 hours and a low efficiency of 2.5 lumens per watt, but they were thought of as a magic light source to replace gaslight. Filament lamps were clean, had greater flexibility, better colour and, with the development of available sources of power, better long-term economics. Now, a century later, the light bulb is still the preferred lamp for domestic use due to its cheap cost. Phillips (2000) continues to state that The life of a filament lamp depends upon its light output, with a greater output giving a shorter life. A life of 1000 hours with a light output of 12/14 lumens per watt was established as being a reasonable compromise and one which has stood the test of time. (Bean, 2007 pp. 139) explains that a compact fluorescent lamp is the introduction of smaller diameter tubes using high efficiency triphosphors bought with it the posibility of folding the tubes to produce compact single ended lamps. A 12W compact fluorescent lamp gives the same output as a 60W tungsten GLS lamp. Fluorescent Lamps (Fielder, 2005 pp. 28) states that Fluorescent lamps are built using a tubular glass envelope coated on the inside with a mix of phosphors. Inert Gas and a small amount of mercury is introduced into the tube to provide the atoms for photoluminescence. the tube is slightly pressurized, and the ends of the tube are capped with electrodes, which contain a cathode to generate and arc. Fluorescent lamps are 8 times more efficient than incandescent lamps and have a long life span, but fluorescent lamps contain mercury shown in figure 5. Mercury in lamps is harmful for the environment if not disposed of appropriately. Halogen Lamps The Interior Lighting for Designers book articulates that The tungsten-halogen   (or halogen)   lamp is an incandescent lamp with a selected gas of the halogen family sealed into it. As the lamp burns, the halogen gas combines with tungsten molecules that sputter off the filament and deposits the tungsten back on the filament   (Gordon, 2003 pp. 73). Figure 6 below shows an example of what a typical halogen lamp looks like. Metal Halide Lamps Metal halide lamps produce white light of a good colour quality and are available in many sizes, from compact lamps that can be used in track lighting and table lamps to huge lamps for lighting stadiums. Standard metal halide lamps tend to have a colour temperature of 3700 to 4100K and appear cool and slightly greenish. Their CRI is 65 to 70. Standard metal halide lamps typically are used where colour is not critical, such as sports arenas, parking lots, landscape lighting, and building floodlighting. (Benya, 2004 pp. 9-10) Light Emitting Diodes (LEDs) An LED is a semiconductor device that emits light when a voltage is surged through the semiconductor.   LED solid-state lighting is becoming more in use because of the energy saving benefits and long term costs. The main types of light bulbs used in offices are fluorescent lamps, incandescent tungsten filament (halogen lamps) and metal halide lamps. Fluorescent lamps are the main types of light sources used in offing lighting; the table states that the fluorescent tubes has a lamp efficiency of 32-86 Lm/W (Lumens per watt) this has a higher efficiency compared to incandescent tungsten filament lamp which have an efficiency of 7-14 Lm/W. Also fluorescent lamps can last more than ten times longer than incandescent tungsten filament lamps, but the tungsten filament lamps has a colour rendering index of 99 which means that the light intensity is much higher and would provide light that is closer to natural daylight compared to fluorescent lamps. Tungsten lamps are mainly used for executive offices to give an office a more professional looking environment. Metal halide lamps are used for desk lamp for more detailed important task where more light may be required for analytical reading and writing /complex drawing tasks. 2.5: LED technology LED technology is a fast growing lamp replacement solution in the lighting industry. LEDs contain semiconductors which are atoms of arsenic, phosphorus, germanium or other elements found in the periodic table. When electricity passes through the semiconductor visible light is emitted. Placing a number of LEDS side by side increases the increases the strength of the brightness. LED lights are also dimmable so the user could control the light intensity in a given area. The advantages of using LEDS are that they have a 50,000 to 100,000 hour life span, they consume very little electricity, they instantly light up, LED lights do not emit UV rays, they are durable to   vibrations they do not contain any mercury and LED emits light from any part of the light spectrum. The disadvantages of using LED lighting are that light is distributed directly instead of evenly compared to incandescent and fluorescent bulbs; it is very expensive to buy LED lights, they could cause light pollution in an environment because LEDs produce a lot of white light and LEDs are sensitive to heat. LED lighting is still currently being researched today to find out better methods to utilise the light from LEDs. An article from The Independent newspaper states The Indian government hopes to remedy this situation, which affects 112,000 rural villages across the country, over the next decade. The solution is a combination of light-emitting diodes (LEDs) and solar power. The former are more efficient than light bulbs the power required to light one conventional 100W bulb can now light an entire village and the latter allows electricity to be stored in batteries and provides lighting where there is no grid supply. Both LEDs and solar panels can also take the rough and tumble of village life: having few moving parts, they are very durable. (Independent, 2006) It is evident to see from this statement that the progress of utilising light from LEDs is positive; however this is not something that can be generalised to a greater population at this current time due to economics. A journal published from the Philips Research Centre shows an experiment on LED light sources and modelling for practical control systems for LEDs. (Subramanian Muthu, 2002) states The recent improvements in high-power light emitting diodes (LED) technology with 100+ lumens per LED chip and efficacy exceeding that of incandescent lamps brings the solid-state lighting close to a reality. An LED light source made of Red, Green and Blue (RGB) LEDs can provide a compact light source with unique features such as instant colour variability. In this paper, we highlight the issues that introduce the variability in the colour point and present feedback control schemes to overcome these problems. (Subramanian Muthu, 2002) The journal concluded with: RGB-LEDs have enormous potential in lighting applications. The major issue to be resolved is control and maintenance of the white point. This issue arises from the variation in LED wavelength and lumen output with temperature, drive current and time. Further complications arise due to the wide spread in the performance parameters of nominally identical LEDs. In this paper we have presented solutions to these issues using electronic feedback control of the light output of the LEDs. (Subramanian Muthu, 2002) A journal on Fundamental Analysis for Visible-Light Communication System Using LED Lights states LED is more advantageous than the existing incandescent in terms of life expectancy, high tolerance to humidity, low power consumption, and minimal heat generation lighting Our group has proposed and optical wireless communication system that employs white LEDs for indoors wireless networks (8)-(11). (Nakagawa, 2004) The journal concludes In visible-light communication system, the LED lights are distributed within a room and the irradiance of light is wide for function of lighting equipment. Therefore, the intersymbol interference depended on the data rate and the FOW of receiver.   (Nakagawa, 2004) A technical report on Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications from the U.S. Department of energy focuses on the energy performance of LED lighting systems within different sectors such as, residential lighting, traffic lighting, retail lighting and office under shelf lighting. the document states that A type of task lighting, LED office undershelf lighting systems have been introduced on the market as replacements for T12 and T8 fluorescent products used in the commercial offices. LED office undershelf lights have the potential to save 1.37 TWh/yr if the entire market shifted to 2007 LED technology, equal to 14.8 TBtu/yr of primary energy consumption. This amounts to about 20% of the annual consumption of one large (1000 MW) electric power plant or the annual electricity consumption of one hundred thousand U.S. households.(U.S. Department of Energy, 2008 pp. 50) The report also states that fluorescent lamps, T8s, and T12s are the types of lamps that are commonly used in an office environment. These fluorescent lighting systems have a fixture efficiency of less than 40%.   This follows on to the average number of hours artificial lights operate for. Office undershelf lighting systems operate for an average of 2000 hours per year, amounting to about 5.5 hours per day or 8 hours per work day. (U.S. Department of Energy, 2008 pp. 51) This would bring on maintenance costs for the building owner due to bulb replacements. The life span of LED lighting systems is far greater than fluorescent lamps, which in turn would reduce regular maintenance. The annual energy comsuption for 53 million office undershelf lighting systems consume 3.43 TWh/yr of electricity in the U.S. At the moment LED lighting systems are still new to the market and have not penetrated the market enough to calculate the actual energy savings; however LED lighting systems have the potential to save 1.37 TWh/yr of electricity if LED lights completely replaced fluorescent lighting systems. (U.S. Department of Energy, 2008 pp. 52) (DiLouie, 2006) Points that LEDs are solid state devices that produce light by passing a current through semiconductor chips which are housed in a reflector, which is Development of Sustainable LED Lighting for Offices Development of Sustainable LED Lighting for Offices CHAPTER 1 INTRODUCTION 1.1: Study Background Climate change is rapidly increasing in our environment due to an increase in gases such as carbon dioxide and methane produced by humans and animals in the Earths atmosphere. As humans we have a moral responsibility to control and save the environment. The built environment is one of the major impacts towards greenhouse gas emissions. Designers are now pressured to design sustainable buildings that have less impact on emissions that damage the environment. The term sustainability means to save natural resources for future generations. Many buildings indirectly use resources such as fossil fuels which are converted into energy. Lighting systems in buildings consume some of this energy. Lighting accounts for around 15% of the energy bill in most homes, and around 25% in commercial buildings. It is supplied by electrical power plants using fossil fuels, and is responsible for a significant percentage of carbon dioxide emissions (Marshall 2009) To help combat how we as consumers use electric lighting an alternative can be achieved via sustainable lighting. Sustainable lighting can be defined as, Lighting that meets the qualitative needs of the visual environment with the least impact on the physical environment. (Service Lamp Corp. 2001) Light is an electromagnetic radiation, which means it is partially electric, magnetic and radiates.   Light starts off from atoms (electrons that orbit the nucleus). When energy is absorbed by an atom the electrons shift up to a bigger orbit. When the atom loses the energy the electrons shift back down to the original orbit, while the electrons shift back down they emit light in the form of electromagnetic radiation. (Sarlina 2009) This document will review material on lighting systems in the office environment. The document will start with a brief history of the light bulb and then go on to how humans interpret light. The document will discuss how LED technology would be utilised more in offices and discuss the importance of migrating to LED lighting systems in offices for a more sustainable environment. The thesis will include three known case studies on LED lighting installed in offices to gather and compare data in order to evaluate how LED lighting would suffice in real life environments. 1.2: Brief History The history of modern lighting starts off with the invention of the arc light in 1810 by Humphrey Davy. This worked by connecting a battery to a strip of charcoal using two wires. The strip of charcoal was charge with electricity and glowed. (Jacks 2003) In 1820 Warren De La Rue used a piece of platinum placed inside a tube.   A current was passed through the tube and the platinum lit well but the bulb did not go into production because platinum was very expensive. (Jacks 2003) A chemist and physicist Joseph Wilson Swan produced a workable electric light in 1860 which he patented as an incandescent light bulb with a filament made from carbonised paper within a partial vacuum. J. W. Swan improved on the invention in 1875 he changed the filament to a compressed and carbonised fibrous cotton thread filament. (Jacks 2003) An inventor called Thomas Alva Edison bought Josephs Swans patent from a company who owned the patent.   Thomas Edison worked on the light bulb to increase the life span. In 1880 Thomas Edison invented his Bamboo fibre filament lamp which lasted for 1200-1500 hours. (Jacks 2003) In 1903 Willis Whitnew invented the tungsten filament lamp (commonly used today). The tungsten lamp had a carbon filament with a metal-coating. This stopped the problem with the bulb turning dark as Thomas Edisons bulb did. (Jacks 2003) Technology today has advanced to new methods of lighting. Light emitting diode (LED) technology is now at the centre point of attention as LED lighting has many advantages with being very energy efficient, long lasting and produces less heat compared to standard incandescent or halogen bulbs. 1.3: Dissertation Structure The dissertation is divided into a sequel of five chapters. The first chapter focuses on climate change and the need to for a more sustainable built environment, a brief history into the light bulb, aims and objectives of this dissertation and the logic behind the dissertation. Chapter two is a detailed literature review which focuses on the effects of lighting on building occupants followed by government legislation, then comparing different types of lighting and leading onto research on LED technology. The information gathered is sourced from websites, government documents, books and scientific journals. Chapter three follows on from the literature review. This chapter focuses on the structure for the dissertation; firstly explaining the reason for using a literature review and then drawing on three major case studies have been chosen and all cases deal with LED lighting systems within office spaces. From the case studies the author has analysed and interpreted information.   The primary data gathered will be in the form of a qualitative questionnaire sent to lighting experts (via email) who have been involved with the case studies. The Answers have been analysed and compared to get a wide knowledge from accredited professional opinions. The fourth chapter researches into the three chosen case studies, all case studies are analysed and compared to give an overview of how effective having an LED lighting system is in an office environment. The fifth chapter discusses the results gathered from the findings. This would give an overview to the dissertation and show the key findings into answering the key questions. The final chapter will draw up conclusions as to the impact of LED lighting in office environments. The chapter addresses the original research question in the context of the findings and provides final conclusions on LED lighting and making use appropriate references where necessary. 1.4: Aim and Objectives The author has chosen sustainable LED lighting as the subject area in this dissertation. The question the author would like to propose will be: Why arent there enough office buildings using LED lighting systems? Also what effects do LED lighting have on users working in an office environment; would LEDs be beneficial for health and comfort on a psychological basis? To address the question the author will explore this main aim: The aim of this study is to research into the sustainability of LED lighting systems and how lighting can affect building users within an office environment. The author will aim analyse case studies on LED lighting systems in offices. What are the advantages and disadvantages? How would an LED lighting system be best suited for the office environment in terms of efficiency, comfort, reliability and short long term costs? The author will interview people from case studies drawn to gather primary qualitative information to reach a final conclusion. The actions the author will take to help answer the research question are listed below: Literature review, take into account of the building regulations, effects of artificial lighting on building occupants, types of artificial lighting and researching into books, case studies, reports, journals and websites related to LED lighting and other sustainable lighting systems. Research case studies on LED lighting systems that have been installed in offices. This would give the author an insight on how LED lighting systems have been successful in a real life environment. Interview researchers from case studies. Ask questions about how LEDs are designed to fit in a working office environment. Any issues that have occurred within the buildings. 1.5: Hypothesis In the United Kingdom there are very few offices if any that use an LED lighting systems to light up an office space. This could be due to lack of awareness, economic climate, social environment and lack of technology available to solve prob lematic conditions. 1.6: Key questions 1. How does light effect building users in terms of health? 2. How would LED lighting benefit offices and the environment? 3. Why isnt there many offices using LED lighting systems? 4. What is the current market like for LED lighting? Would there be a future for more LED lighting in offices? CHAPTER 2 LITERATURE REVIEW 2.1: Introduction This chapter researches into the effects of lighting on buildings occupants, legislation, different types of lighting and LED technology in detail. The aim for this literature review is to obtain information on how light is transcribed in the circadian system and the effects of light on human health. Legislation is a key issue for lighting. it regulate on the amount of light required for the appropriate tasks usually attained in different buildings, by learning legislation it would give the author an understanding into what requirements an office would need for good lighting. All information collated are from secondary and tertiary sources; for this literature review the information is found in books, journals, web pages, and government documents. 2.2: Effects of lighting on building occupants Lighting affects all building occupants on the way they perform tasks. There are different levels of lighting in different environment; the colour of light used in offices would tend to have a blue-white colour to promote concentration and light used in public areas would be a warmer yellow colour so building occupants would feel more relaxed in this type of environment. Too much light can cause health problems such as increased stress levels, headaches and higher blood pressure to the building occupant. (H.E.S.E, 2009) (Boyce, 2003 pp. 160) stated that Most apparently visual tasks have three components; visual, cognitive, and motor. Every task is unique in its balance between these components and hence in the effect lighting conditions have on task performance. (Boyce, 2003 pp. 160) also stated that Lighting conditions can affect task performance throught three systems, the visual system, the circadian system, and the perceptual system. the impact   of lighting conditions on the visual system and hence on visual performance is determined by the size, luminance contrast, and colour difference of the task and the amount, spectrum, distrbution of the lighting. The point that   (Boyce, 2003) makes is that light sent to the visual system affects the performance of the information relayed in the brain.   (Cuttle, 2008 pp. 5-6) stated The optical system of the human eye focuses an inverted image onto the retina, shown in Figure 1. This image is constantly changing with movements of the head and the scanning movements of the eyes. It is often said that the eye is like a camera, but the only similarity is that it forms a focused image in which, for every pixel, there is a corresponding element in the luminous environment. The distribution of luminance and colour that comprises the retinal image is modified by light losses that occur in the optical media of the eye, and these losses are not constant as they increase significantly with age. (Cuttle, 2008) Both books express points about how light is interpreted in the human brain differently but they both correlate how light can affect a building occupant. They both state how light is interpreted in the visual system. A research journal on Light Much More Than Vision written by Mark. S. Rea (Ph.D.) Discuses how lighting can affect the circadian system in building occupants. The journal questions if offices, school and homes are providing good lighting practises. The journal begins with an abstract on the impact of light on the circadian system The amount of light, its spectral composition, spatial distribution, timing and duration needed for vision is so different from that needed for circadian functioning, that generalizations about good lighting will have to be assessed by two very different sets of criteria in the future. (Mark. S. Rea, 2007) The journal continues on how light is interpreted in the human circadian system Light is presently and formally defined as optical radiation entering the eye that provides visual sensation. An international system of photometry has been developed and institutionalized to quantify, measure and communicate the properties of light as it affects the human vision. (Mark. S. Rea, 2007) This statement explains how light is communicated in human vision.   Practical sources of light allow humans to read material, move around spaces, drive cars, create social interaction between other users and allow user to do other activities. Under spatial distribution the journal states Through optical refraction by the cornea and lens in the eye and by neural-optical enhancements by in the retina, the spatial distribution of objects and textures in the environment can be processed by the visual system. Arguably accurate rendering of the spatial distribution of light in our environment by our retina is essential to our survival because   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   patterns of light and dark provide information needed by the visual system (Mark. S. Rea, 2007) The journal concludes with So, Are we providing healthy light in our offices, schools and homes? Probably the answer is No, we are not. Certainly we are not providing or specifiying the ideal lighting technologies and applications for the circadian regluation (Mark. S. Rea, 2007). This would bring on the question as to wether LED lighting would provide the answer to good lighting. LED has been evolving for years, they have been specifically modified to provide comfortable lighting levels for which a user could carry out certain visual functions. 2.3: Legislation The Kyoto agreement is a protocol made by the United Nations Framework Convention on Climate change. This main aim of the protocol is to stabilise greenhouse gas emissions. There are four greenhouse gases that the protocol focuses on (carbon dioxide, nitrous oxide, methane, sulphur hexafluoride). The United Kingdom Government is legally tied to the Kyoto agreement and has set out targets to meet emission rates. A document on The Kyoto Protocol by British-Energy states The UKs commitment under the protocol is for a reduction in greenhouse gas emissions of 12.5% from 1990 levels by 2008-2012. This implies an 8% reduction in CO2 emissions over this time period. The UK government also has an aspirational target for itself of a 20% reduction of CO2 emissions by 2010, demonstrating the importance of this issue for the current government.(British Energy, 2009) Offices contribute towards the CO2 emissions given off around the planet. A lot of the energy used in offices is mainly caused by office lighting. The new advancements in LED lighting could reduce the amount of energy used because LED lighting is the most sustainable type of artificial lighting. This could help aid the efforts of the Kyoto Protocol and help meets emission targets. Approved Documents Part L of the building regulations is split up into four documents. Part L1A and L1B focuses on conservation of fuel and power in domestic buildings, part L2A and L2B focuses on conservation of fuel and power in non domestic buildings. As of 6th April 2006 the revised Building Regulations Part L Conservation of Fuel and Power came into effect. The updated regulations would improve energy standards by 40 percent from that of the 2002 Building Regulations (ODPM, 2006). There are four approved documents published by the Office of the Deputy Prime Minister (ODPM, 2006): Approved Document L1A: Conservation of fuel and power (New dwellings) (2006 edition) Approved Document L1B: Conservation of fuel and power (Existing dwellings) (2006 edition) Approved Document L2A: Conservation of fuel and power (New buildings other than dwellings) (2006 edition) Approved Document L2B: Conservation of fuel and power (Existing buildings other than dwellings) (2006 edition) L1 Domestic buildings Conservation of fuel and power in dwellings. Limiting heat loss through fabric of dwelling from hot water pipes used for space heating. Limiting heat loss through hot water vessels and service pipes. Use control systems on space heating and hot water systems so that energy can be used efficiently. Use control systems on lighting systems so that energy can be used efficiently. L2 Buildings other than dwellings Conservation of fuel and power in non domestic buildings. Limiting heat loss through fabric of dwelling from hot water pipes used for space heating. Limiting heat loss through hot water vessels and service pipes. Use control systems on space heating and hot water systems so that energy can be used efficiently. Providing lighting systems with sufficient controls so that energy can be used efficiently. Limiting exposure to solar heat gains. Use control systems on air conditioning and mechanical ventilation systems so that energy can be used efficiently. Commissioning the building engineering services so that they make efficient use of energy and recording their performance. Approved Document L2A: Conservation of fuel and power highlights what is required for lighting efficiency in offices, industrial and storage areas in all building types. The document states For the purposes of this Approved Document, office areas include those spaces that involve predominantly desk-based tasks, including classrooms, seminar rooms and conference rooms, including those in schools. Reasonable provision would be to provide lighting with an average initial efficiency of not less than 45 luminaire-lumens/circuit-Watt as averaged over the whole area of these types of space in the building. (ODPM, 2006 pp. 19) LED lighting has the potential to excel past the average guide for initial efficiency of 45 lumens per watt. A breakthrough from the lighting company CREE states LED efficacy test results that set a new benchmark for the LED industry. Cree reported results of 131 lumens per watt white LED efficacy, confirmed by the National Institute of Standards and Technology in Gaithersburg, Maryland. Tests were performed using prototype white LEDs with Cree EZBrightâ„ ¢ LED chips. (CREE Inc, 2009) The CIBSE Lighting Guide 7: Office Lighting gives a guidance of how to layout lighting systems within an office to give the maximum efficiency of lighting and how much light is required for different types of office spaces. The guide states There are many ways to light an office space: with direct light down from above, from indirect light bounced from the ceiling, or from a combination of both. Many factors will dictate or influence the choice of which technique to use.   (Ruffles, 2005 pp. 7) There are many different building types and each office would need a lighting system that is individually specified. There are different types of lighting systems that give off different light intensities. The lighting guide states that a typical office space would need 500 lux (illuminance) for building users to take on paper-based or mixed tasks comfortably and 300 lux for any screen-based work. (Ruffles, 2005) Figure 2 shows the required amounts of light need for building user to work within different types of offices spaces, taken from the office lighting guide. The figures suggest that each typical office space would need 300 lux for screen based tasks, normal meetings and reception administrative tasks and 500 lux for more intense tasks such as paper-based, reading documents and writing. In a more deep-plan area the office space is required to have 500-750 lux throughout to perform multiple tasks comfortably. This is due to the fact that deep-plan areas are more towards the middle of office spaces or more than six meters away from windows; they would require a more constant flow of artificial light. This is where LED lighting may be at best because of the amount of electricity LED lighting systems take are very minimal and could deliver the required amount of light depending and the type of fixture. In normal deep-plan areas artificial lighting systems are on for longer periods because natural lighting coming in from windows would not penetrate throughout the office spaces. The corporation Philips suggests that a higher powered LED light would deliver up to 220 lumens. This type of LED would typically consume four watts. A typical deep-plan office space would require three high powered LED lights to deliver a comfortable amount of light for a user to perform various tasks, which would still consume less electricity compared to other office lighting systems. 2.4: Types of lighting There are many types of lamps that are currently used in different environments. These lamps include the incandescent lamp, compact fluorescent lamp, fluorescent lamp, halogen lamp, metal halide lamp and light emitting diodes. Incandescent lamps An incandescent lamp is a glass (See figure 3) bulb containing a thin filament. A current is passed through the filament, which heats up the filament until light is produced. (Philips, 2000 pp.49-50) stated The earliest filament lamps as developed by Swan in the United Kingdom and Edison in the United States had a short life of only 150 hours and a low efficiency of 2.5 lumens per watt, but they were thought of as a magic light source to replace gaslight. Filament lamps were clean, had greater flexibility, better colour and, with the development of available sources of power, better long-term economics. Now, a century later, the light bulb is still the preferred lamp for domestic use due to its cheap cost. Phillips (2000) continues to state that The life of a filament lamp depends upon its light output, with a greater output giving a shorter life. A life of 1000 hours with a light output of 12/14 lumens per watt was established as being a reasonable compromise and one which has stood the test of time. (Bean, 2007 pp. 139) explains that a compact fluorescent lamp is the introduction of smaller diameter tubes using high efficiency triphosphors bought with it the posibility of folding the tubes to produce compact single ended lamps. A 12W compact fluorescent lamp gives the same output as a 60W tungsten GLS lamp. Fluorescent Lamps (Fielder, 2005 pp. 28) states that Fluorescent lamps are built using a tubular glass envelope coated on the inside with a mix of phosphors. Inert Gas and a small amount of mercury is introduced into the tube to provide the atoms for photoluminescence. the tube is slightly pressurized, and the ends of the tube are capped with electrodes, which contain a cathode to generate and arc. Fluorescent lamps are 8 times more efficient than incandescent lamps and have a long life span, but fluorescent lamps contain mercury shown in figure 5. Mercury in lamps is harmful for the environment if not disposed of appropriately. Halogen Lamps The Interior Lighting for Designers book articulates that The tungsten-halogen   (or halogen)   lamp is an incandescent lamp with a selected gas of the halogen family sealed into it. As the lamp burns, the halogen gas combines with tungsten molecules that sputter off the filament and deposits the tungsten back on the filament   (Gordon, 2003 pp. 73). Figure 6 below shows an example of what a typical halogen lamp looks like. Metal Halide Lamps Metal halide lamps produce white light of a good colour quality and are available in many sizes, from compact lamps that can be used in track lighting and table lamps to huge lamps for lighting stadiums. Standard metal halide lamps tend to have a colour temperature of 3700 to 4100K and appear cool and slightly greenish. Their CRI is 65 to 70. Standard metal halide lamps typically are used where colour is not critical, such as sports arenas, parking lots, landscape lighting, and building floodlighting. (Benya, 2004 pp. 9-10) Light Emitting Diodes (LEDs) An LED is a semiconductor device that emits light when a voltage is surged through the semiconductor.   LED solid-state lighting is becoming more in use because of the energy saving benefits and long term costs. The main types of light bulbs used in offices are fluorescent lamps, incandescent tungsten filament (halogen lamps) and metal halide lamps. Fluorescent lamps are the main types of light sources used in offing lighting; the table states that the fluorescent tubes has a lamp efficiency of 32-86 Lm/W (Lumens per watt) this has a higher efficiency compared to incandescent tungsten filament lamp which have an efficiency of 7-14 Lm/W. Also fluorescent lamps can last more than ten times longer than incandescent tungsten filament lamps, but the tungsten filament lamps has a colour rendering index of 99 which means that the light intensity is much higher and would provide light that is closer to natural daylight compared to fluorescent lamps. Tungsten lamps are mainly used for executive offices to give an office a more professional looking environment. Metal halide lamps are used for desk lamp for more detailed important task where more light may be required for analytical reading and writing /complex drawing tasks. 2.5: LED technology LED technology is a fast growing lamp replacement solution in the lighting industry. LEDs contain semiconductors which are atoms of arsenic, phosphorus, germanium or other elements found in the periodic table. When electricity passes through the semiconductor visible light is emitted. Placing a number of LEDS side by side increases the increases the strength of the brightness. LED lights are also dimmable so the user could control the light intensity in a given area. The advantages of using LEDS are that they have a 50,000 to 100,000 hour life span, they consume very little electricity, they instantly light up, LED lights do not emit UV rays, they are durable to   vibrations they do not contain any mercury and LED emits light from any part of the light spectrum. The disadvantages of using LED lighting are that light is distributed directly instead of evenly compared to incandescent and fluorescent bulbs; it is very expensive to buy LED lights, they could cause light pollution in an environment because LEDs produce a lot of white light and LEDs are sensitive to heat. LED lighting is still currently being researched today to find out better methods to utilise the light from LEDs. An article from The Independent newspaper states The Indian government hopes to remedy this situation, which affects 112,000 rural villages across the country, over the next decade. The solution is a combination of light-emitting diodes (LEDs) and solar power. The former are more efficient than light bulbs the power required to light one conventional 100W bulb can now light an entire village and the latter allows electricity to be stored in batteries and provides lighting where there is no grid supply. Both LEDs and solar panels can also take the rough and tumble of village life: having few moving parts, they are very durable. (Independent, 2006) It is evident to see from this statement that the progress of utilising light from LEDs is positive; however this is not something that can be generalised to a greater population at this current time due to economics. A journal published from the Philips Research Centre shows an experiment on LED light sources and modelling for practical control systems for LEDs. (Subramanian Muthu, 2002) states The recent improvements in high-power light emitting diodes (LED) technology with 100+ lumens per LED chip and efficacy exceeding that of incandescent lamps brings the solid-state lighting close to a reality. An LED light source made of Red, Green and Blue (RGB) LEDs can provide a compact light source with unique features such as instant colour variability. In this paper, we highlight the issues that introduce the variability in the colour point and present feedback control schemes to overcome these problems. (Subramanian Muthu, 2002) The journal concluded with: RGB-LEDs have enormous potential in lighting applications. The major issue to be resolved is control and maintenance of the white point. This issue arises from the variation in LED wavelength and lumen output with temperature, drive current and time. Further complications arise due to the wide spread in the performance parameters of nominally identical LEDs. In this paper we have presented solutions to these issues using electronic feedback control of the light output of the LEDs. (Subramanian Muthu, 2002) A journal on Fundamental Analysis for Visible-Light Communication System Using LED Lights states LED is more advantageous than the existing incandescent in terms of life expectancy, high tolerance to humidity, low power consumption, and minimal heat generation lighting Our group has proposed and optical wireless communication system that employs white LEDs for indoors wireless networks (8)-(11). (Nakagawa, 2004) The journal concludes In visible-light communication system, the LED lights are distributed within a room and the irradiance of light is wide for function of lighting equipment. Therefore, the intersymbol interference depended on the data rate and the FOW of receiver.   (Nakagawa, 2004) A technical report on Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications from the U.S. Department of energy focuses on the energy performance of LED lighting systems within different sectors such as, residential lighting, traffic lighting, retail lighting and office under shelf lighting. the document states that A type of task lighting, LED office undershelf lighting systems have been introduced on the market as replacements for T12 and T8 fluorescent products used in the commercial offices. LED office undershelf lights have the potential to save 1.37 TWh/yr if the entire market shifted to 2007 LED technology, equal to 14.8 TBtu/yr of primary energy consumption. This amounts to about 20% of the annual consumption of one large (1000 MW) electric power plant or the annual electricity consumption of one hundred thousand U.S. households.(U.S. Department of Energy, 2008 pp. 50) The report also states that fluorescent lamps, T8s, and T12s are the types of lamps that are commonly used in an office environment. These fluorescent lighting systems have a fixture efficiency of less than 40%.   This follows on to the average number of hours artificial lights operate for. Office undershelf lighting systems operate for an average of 2000 hours per year, amounting to about 5.5 hours per day or 8 hours per work day. (U.S. Department of Energy, 2008 pp. 51) This would bring on maintenance costs for the building owner due to bulb replacements. The life span of LED lighting systems is far greater than fluorescent lamps, which in turn would reduce regular maintenance. The annual energy comsuption for 53 million office undershelf lighting systems consume 3.43 TWh/yr of electricity in the U.S. At the moment LED lighting systems are still new to the market and have not penetrated the market enough to calculate the actual energy savings; however LED lighting systems have the potential to save 1.37 TWh/yr of electricity if LED lights completely replaced fluorescent lighting systems. (U.S. Department of Energy, 2008 pp. 52) (DiLouie, 2006) Points that LEDs are solid state devices that produce light by passing a current through semiconductor chips which are housed in a reflector, which is

Friday, October 25, 2019

Characteristics of an Exceptional Manager :: MBA College Admissions Essays

Characteristics of an Exceptional Manager    Describe the characteristics of an exceptional manager. Illustrate how his or her management style has influenced you.    In management consulting, strong analytical skills are valued as much as, if not more than, effective managerial and leadership skills. Unfortunately, for some consultants, these characteristics, at times, are mutually exclusive. I was fortunate, however, to work with [name] on my first major project at [consulting firm]. As my project-manager, he demonstrated a superior combination of leadership, managerial, and communication skills. As a result of our interaction, I learned several important lessons and tools that I used on subsequent projects to improve my effectiveness as a team leader.    To begin, [name] is a true leader who exhibits courage and dedication. A powerful trait rarely found in the realm of business, courage is unique in its ability to unify and motivate people. Moreover, his courage is balanced appropriately with professionalism, strong values, and humility. He is sensitive to others' feelings and recognizes that different people require different types of direction and treatment. Although he often works with diverse and difficult groups, he always seems able to reach consensus and create a shared vision and purpose. Furthermore, he excels at establishing priorities and proactively setting direction.    As an effective manager, [name] also is able to translate his broad direction into discrete, tangible tasks. Since consultants often use difficult or creative analytical approaches, clearly articulating tasks and defining outputs is very important. In addition, he exercises the appropriate level of supervision. Rather than micro-managing his team members, [name] establishes clear accountabilities and expectations and pushes work down to the correct level. As a result, he creates a strong sense of ownership and leverages the skills of his team members. Furthermore, he excels at creating a supportive environment and, when necessary, coaching team members to help them develop new skills.    Finally, [name] is a masterful communicator. He is the only project manager I have had who gave me consistent and constructive feedback, importantly, both positive and negative. Such feedback not only provides clear developmental objectives, but also signals to others that he values their contributions. This type of balanced and open communication quickly forms the foundation of mutual trust and respect. Furthermore, [name] excels in the art of negotiation and debate. He states his points with remarkable precision and is expert at remaining objective and recognizing all sides of an argument.

Thursday, October 24, 2019

Compare the Love Language Used in ‘Quickdraw’ Essay

Quickdraw is a poem about the end and break down of a relationship. Specifically an argument between the speaker and their other half and the feelings felt by the speaker in the poem. It has many similarities and differences with In Paris with You a poem about a very negative relationship with the speaker who is desperately in love with someone who is just using them. The poem uses a play on words and anytime the words Paris and love are mentioned you have to switch them, so Paris means love and love means Paris. These poems have similarities and difference and these can be explored through language techniques and key themes. Both Quickdraw and In Paris with You explore negative sides to a relationship. In Quickdraw the negative side is the pain of the break up at the ending of the relationship â€Å"hear me groan You’ve wounded me† this shows the pain the speaker is going through during the breakdown and end of their relationship. In In Paris with you they explore a different side of a negative relationship, the love the speaker feels for someone and the way they are being used by that person â€Å"Yes I’m angry at the way I’ve been bamboozled†¦ I’m in Paris with you† this shows that although the speaker is angry at being used, she is still in love with them (I’m in Paris†¦ = I’m in love†¦ ). In In Paris with You the speaker expresses their love for the other person â€Å"I’m in Paris with You† (meaning â€Å"I’m in love with You) is repeated throughout the poem. But they also have differences such as, some other aspects of their structure, some of the themes of the poems. In Paris with You and Quickdraw both explore negative relationships, a relationship between a person absolutely besotted over someone who is using them and doesn’t feel anything back for them or the argumentative end to a relationship where both of them are hurling insults at the other and breaking u their relationship.

Wednesday, October 23, 2019

Relationship Between Critical Thinking and Decision Making Essay

In the corporate environment critical decisions must be made, sometimes quickly, whether because of changes in market conditions, corporate profits, or corporate performances. The decision-making process is vital to good management in today’s work environment. This paper will examine the relationship between critical thinking and the decision making process, explain what the textbook authors believe, and relate how both apply to today’s workplace. Critical thinking involves the ability to weigh evidence, examine arguments, and construct rational bases for generally accepted beliefs. In order to establish a theoretical basis for studying critical thinking, a great quantity of research has been done. Critical thinking is not only the ability to reason and construct arguments, but also the ability to examine the reasoning processes involved and being able to evaluate their appropriateness and effectiveness. This â€Å"judgment† aspect is what makes critical thinking more than just problem solving. It is not sufficient to be able to apply problem-solving strategies to a particular problem; a true critical thinker must be able to choose appropriate strategies and even create new ones when necessary. In dealing with most complex problems in today’s work environment, there may be more than one good answer to a problem. The question then becomes one of picking the best answer; this is called decision-making. Weighing the consequences of these possible solutions based on our understanding of their potential outcomes is the job of the manager. A good manager does not distinguish between â€Å"critical thinking† and â€Å"decision-making† when working. He uses both to arrive at a solution. It is only when analyzing how to come to a specific decision that he must employ critical thinking skills so that he does not allow personal prejudices, emotions, or stress to affect his thinking processes. According to the authors of Whatever It Takes – The Realities of Managerial Decision Making, the six steps to critical thinking and decision making are:  Ã¢â‚¬Å"1) a problem is defined and isolated, 2) information is gathered, 3) alternatives are set forth, 4) an end is established, 5) means are created to achieve the end, and 6) a choice is made.† The authors say when applied in today’s business environment, the six steps are mostly ineffective because â€Å"executive decision-making is not a series of single linier acts.† It is the interference of many other factors (such as murky information, poor information input, and multiple problems intersecting) that makes scientific study of real-life decision-making difficult. (McCall & Kaplan, 1990, pg xvii – xviii) Therefore, the authors suggest case study and specific dissection of past decisions is the best way to learn how to make future decisions. In my field of work (currently training of teaching personnel), decisions must be made as to time management, importance of curriculum vs. methodology, and allocation of skill acquisition importance. In addition, two corporations are my superiors; each with different hierarchies as to who tells me which jobs should be done. My decisions, therefore, must not only be politically correct, but must be ones that make the most people happy. When three different departments from three different divisions ask me to begin a project, someone has to be told to wait. It is at times like these that critical thinking becomes important to justify my decisions when responding to their requests. Critical thinking is used both to justify my decisions and to clarify my thinking. Reference McCall, M. W., & Kaplan, R. E. (1990). Whatever It Takes – The Realities of Managerial Decision Making (2nd ed.). Upper Saddle River, New Jersey: Prentice Hall.

Tuesday, October 22, 2019

Essay on Stereotypes - WritePass - Free Essay Example

Essay on Stereotypes Conclusion Essay on Stereotypes WritePass Example Essay StereoTypes IntroductionTo modify or extend this essay or to get pricing on a custom essay Contact Us TodayConclusionTo modify or extend this essay or to get pricing on a custom essay Contact Us TodayRelated StereoTypes Introduction Stereotypes are a part of our everyday life. We hear stereotypes every day and everywhere. Sometimes we can find ourselves in a situation where we make stereotypes for a large group of people. Every person, young or old, is labelled with either positive or negative stereotypes. Stereotyping is a way that people group each other. Each group is called by name, that doesnt really fit to everyone in that specific group. Stereotypes affect people’s social lives, emotions, and how people interact with their environment. There are times that you are not so open to the idea of meeting new people, and making new friends. You don’t want to go outside, because we have put our own set of rules in this world. We know that we get criticized about what we wear every single day! We are criticized in which music we listen to, how we look like, how we act, and who we hang out with. We are also criticized on every other personal trait and imperfection we have. We have put the bar way up high, maybe too high for our potentials. Stereotype Essay What we really know? We cannot afford all the stereotyping that is going on between us. After we come and we say to people to just be who they are. If we say to a person that he or she is a hippie, just from the way they are dressed, that is just totally wrong. Hippie is someone who rejects the culture, not just the one who has long hair and wears beads. We are using the words in the wrong way. There are many people that have no friends, because they are tired of their critique. Leave everything behind and don’t let stereotypes ruin your social life. Stereotypes have an enormous impact of how we feel. That makes people have no motivation; therefore they won’t have good performance at any level in their life. For instanceif a kid is stereotyped as black and obese, how can these words make him feel good, so that he/she can move on to the next level? This can create psychological pressure. Other people face stereotypes as a threat. For example there is a stereotype that says that women are bad drivers. It puts even more pressure on how they feel, not only being around people who are labelling them, but being around people that they trust. They will try to prove to them that this is just a stereotype and it does not exist. In addition, this occurs in situations where people worry for their performance and how they look like. Besides that people don’t want their poor performance to lead to negative stereotypes. To modify or extend this essay or to get pricing on a custom essay Contact Us Today Members of stereotyped groups worry of what they are doing, and this makes them stressed, because they think that they have to be perfect, in all aspects of their lives! People get tired of being criticized all the time. When there is no one able to close people’s mouths, they start to become isolated. In the same way they don’t talk, because they are afraid to say something wrong, so that they won’t look silly. They are afraid of failure. For example, people seem surprised when they see men cry or being emotional. They think that men are not allowed to express their feelings, or men have no feelings at all. Men are not unconscious, they have feelings, but that is just a stereotype and a generalization from our society. It is easy to see that with are actions and sayings we are trying to kill emotions and thoughts! We should learn how to control our feelings and emotions, instead of letting stereotypes control them. In addition, your surroundings can be affected as well. If you had a bad day because someone just stereotyped you, when you go home or to your friends you are going to be really anxious. In addition you would probably get irritated or feel sad at the same time. You just go to your room or sit alone in a corner. When your loved ones see you like that they are not going to feel any better, because your emotions are now in control, and you just pass them around. In other words you broadcast your feelings to others. Furthermore there are times teachers question their students â€Å"Did I create a good environment, so that you can be able to talk and share ideas with the rest of your class?† Well, sometimes teachers cannot change this situation. The only people that can create a comfortable and happy atmosphere are us the students. They are many stereotypes going in and out of every classroom. That’s why sometimes students can be afraid to share ideas, because before they were stereotyped as nerds. These days’ people are afraid to be themselves, because they fear other people. They don’t want people to think something bad for them. Secrets, thoughts, and ideas, are all held down. Stereotypes can be an obstacle as to how open you are with people and how you make people feel when you are with them! Conclusion Instead of focusing on all the mistakes of each person, we should start paying more attention of how unique each person is. Stereotype causes people to feel lonely and even sometimes depressed. It’s also harmful for their environment and their social life. We should keep stereotypes out of the picture, even though sometimes we can be victims ourselves. Stop judging people before you even get to know them. You may also like reading Dissertation Examples Methodology Essays Dissertation Example To modify or extend this essay or to get pricing on a custom essay Contact Us Today

Monday, October 21, 2019

Red Light Prostitution Area of Lahore the Inside Details.

Red Light Prostitution Area of Lahore the Inside Details. AcknowledgementI would like to extend our gratitude to Miss Rabia Munir for the help and support she has provided us. Without her guidelines and supervision this project could not reach completion. Furthermore, I would like to thank my parents for their perpetual encouragement. Lastly, me fellows Osman Bucha, Uzma Bucha, Dr. Iffat Omer, Hamza Mir, Rashid Saleem, Hamid and Daniyal Gulzar Butt for lending us a hand in the Herculean task of interviewing the Naikas and sex workers at Heera Mandi; and also for providing comic relief during trying times. Had it not been for the aforementioned people this research would not have not been possible.AbstractThe narrow alley and intertwined roads behind the majestic Badshahi Mosque in the city of Lahore cradle people that are looked down upon as social outcasts, the inhabitants of Heera Mandi. Though these workers provide services to many, they are stuck in a profession that is not rewarding financially or socially.Tiles2 cocoo's den lahoreFor these people there is no way out as society is not willing to accept them into mainstream. Our research aims to draw comparisons between the past and present of this district also highlighting their lives and what is the stance of our government and society on this issue. We also wish to highlight reasons for the existence of prostitution and recommend solutions how to overcoming it may be possible.HistoryA red-light area is a neighborhood where prostitution and other businesses in the sex industry flourish. The term "red-light district" was first recorded in the United States around 1890, and derives from the practice of placing a red light in the window to indicate to customers the nature of the business. Some say the origin of the red light comes from the red lanterns carried by railway workers, which were left outside brothels...

Saturday, October 19, 2019

Call of the Wild Book

He is disciplined by the Law of Club and Fang. The man in the red sweater takes Buck out of the cage and repeatedly beats him. Buck continues to try to attack until he is to week to fight. He then learns the law of Club and Fang. Buck is sold and put on a sled team. He learns to dig a hole in the snow to stay warm. He has a fierce rivalry with the lead dog Spitz. Spitz then kills one of Buck’s best friends Curly by ripping Curly’s face up. Buck ends up having multiple fights with Spitz. One of which where Spitz takes Buck sleeping hole and tries to keep it. Spitz gets whipped and sent back to his own hole. Buck and Spits end up in a fight in which Buck is determined to kill Spitz and end the rivalry for good. He then does what he was determined to do and kills Spitz. Buck then takes the lead dog position and gains trust from his team. The team is then taken over by Hal, Charles, and Mercedes. They are amateur sled runners and don’t quite know what they are doing. They end up shooting a dog (Dave), because he was too weak to go on. Buck then leads the team into John Thornton’s little camp setup. Hal was advised by John not to go across the ice but he decides to do it anyway. Hal starts beating Buck and John Thornton threatens to kill him with his rifle. John then takes Buck to be his own. They all fall through, including the team. They are killed and John takes care of Buck, the only survivor. Buck then saves john Thornton’s life a couple times. John and Buck develop a special bond. John decides to search for gold. Buck is in part of a bet made by john Thornton that says he can pull a sled with a fairly large amount of weight. Buck then shocks everybody and pulls the sled 100 yards and wins John Thornton $1000 ($1600 in the book). John is out in the search of gold. He comes across a Yeehat tribe and builds up hate for them. Buck scares away the Yeehats once. They the com back later and kill John Thornton by shooting him with a bow and arrow. Buck then kills multiple Yeehats out of anger. He is then left with the decision to live by himself in the wild. Differences In the movie, Buck was never sold to Francois and Perrault. He was never a part of their team and he did not steal any bacon from Francois. In the movie, Buck started out going to John Thornton’s team, stolen by Black Burtons bandits, claimed by a dog auctioneer, sold to Hal and his crew, brought across Johns Thornton’s camp and is returned to him. Buck was never sold from Francois and Perrault to a Scotch half-breed man that was very hairy. It did not tell the names of other dogs in the movie. In my eyes, the movie portrayed John Thornton’s friend, Pete, more than in the book. In the movie John Thornton is attracted to a girl at a bar. A man named Black Burton doesn’t like John so he has his team stolen by some of his thugs. They then take the team to a town. On the way a man falls down a hill and is killed. When the dogs get to the town, the only guy left on the sled is frozen solid and killed. A man then claims the dogs on the spot and auctions them off to Hal, Charles, and Mercedes. They plan to take the team to Dawson city (where John Thornton is). On the way a dog (Dave) is shot by Hal because he can’t go on. They come across John Thornton’s camp. John takes Buck back and the others drowned. John then takes more care of buck and heals him up. The book stated that Buck had killed a Moose by wearing it out and then attacking it. That never happened in the movie. In the book, Mad Dolly was a dog that raged and tried to kill Buck. The movie showed Mad Dolly as a horse. The movie shows more dialect and perspective of john Thornton rather than Buck. It made the movie almost more about John than it did about Buck. John and Buck found a cabin in the woods that had a gun in it that said E. K. W. on it. That wasn’t in the book. Because of all of the similarities and differences that I have written, I believe that the book was way better than the movie. The movies didn’t have much anything that was the same in the book. The worst part was that it left me guessing about who E. K. W. was. It didn’t even give a hint about who he or she was. That should not ever happen in a movie. Call of the Wild Book He is disciplined by the Law of Club and Fang. The man in the red sweater takes Buck out of the cage and repeatedly beats him. Buck continues to try to attack until he is to week to fight. He then learns the law of Club and Fang. Buck is sold and put on a sled team. He learns to dig a hole in the snow to stay warm. He has a fierce rivalry with the lead dog Spitz. Spitz then kills one of Buck’s best friends Curly by ripping Curly’s face up. Buck ends up having multiple fights with Spitz. One of which where Spitz takes Buck sleeping hole and tries to keep it. Spitz gets whipped and sent back to his own hole. Buck and Spits end up in a fight in which Buck is determined to kill Spitz and end the rivalry for good. He then does what he was determined to do and kills Spitz. Buck then takes the lead dog position and gains trust from his team. The team is then taken over by Hal, Charles, and Mercedes. They are amateur sled runners and don’t quite know what they are doing. They end up shooting a dog (Dave), because he was too weak to go on. Buck then leads the team into John Thornton’s little camp setup. Hal was advised by John not to go across the ice but he decides to do it anyway. Hal starts beating Buck and John Thornton threatens to kill him with his rifle. John then takes Buck to be his own. They all fall through, including the team. They are killed and John takes care of Buck, the only survivor. Buck then saves john Thornton’s life a couple times. John and Buck develop a special bond. John decides to search for gold. Buck is in part of a bet made by john Thornton that says he can pull a sled with a fairly large amount of weight. Buck then shocks everybody and pulls the sled 100 yards and wins John Thornton $1000 ($1600 in the book). John is out in the search of gold. He comes across a Yeehat tribe and builds up hate for them. Buck scares away the Yeehats once. They the com back later and kill John Thornton by shooting him with a bow and arrow. Buck then kills multiple Yeehats out of anger. He is then left with the decision to live by himself in the wild. Differences In the movie, Buck was never sold to Francois and Perrault. He was never a part of their team and he did not steal any bacon from Francois. In the movie, Buck started out going to John Thornton’s team, stolen by Black Burtons bandits, claimed by a dog auctioneer, sold to Hal and his crew, brought across Johns Thornton’s camp and is returned to him. Buck was never sold from Francois and Perrault to a Scotch half-breed man that was very hairy. It did not tell the names of other dogs in the movie. In my eyes, the movie portrayed John Thornton’s friend, Pete, more than in the book. In the movie John Thornton is attracted to a girl at a bar. A man named Black Burton doesn’t like John so he has his team stolen by some of his thugs. They then take the team to a town. On the way a man falls down a hill and is killed. When the dogs get to the town, the only guy left on the sled is frozen solid and killed. A man then claims the dogs on the spot and auctions them off to Hal, Charles, and Mercedes. They plan to take the team to Dawson city (where John Thornton is). On the way a dog (Dave) is shot by Hal because he can’t go on. They come across John Thornton’s camp. John takes Buck back and the others drowned. John then takes more care of buck and heals him up. The book stated that Buck had killed a Moose by wearing it out and then attacking it. That never happened in the movie. In the book, Mad Dolly was a dog that raged and tried to kill Buck. The movie showed Mad Dolly as a horse. The movie shows more dialect and perspective of john Thornton rather than Buck. It made the movie almost more about John than it did about Buck. John and Buck found a cabin in the woods that had a gun in it that said E. K. W. on it. That wasn’t in the book. Because of all of the similarities and differences that I have written, I believe that the book was way better than the movie. The movies didn’t have much anything that was the same in the book. The worst part was that it left me guessing about who E. K. W. was. It didn’t even give a hint about who he or she was. That should not ever happen in a movie.

Friday, October 18, 2019

Internal analysis Essay Example | Topics and Well Written Essays - 1500 words

Internal analysis - Essay Example However, the IBIS report provides that the customers can be further--- categorized in terms of the products sought by them. The main categories of the restaurant customers catered to buy the industry include the retail POS software customers, the food service POS software customers, the hospitality POS software customer and other general POS software customers. The products provided by vendors in the industry are differentiated in terms of their use, the product’s price as well as their respective functionality. The Abacus Business Solutions is company that is privately owned and operated. The company has been operating since 1974. Its main objective is to provide POS solutions to players in the hospitality industry. The company has its headquarters in Fort Lauderdale in Florida, United States. The main product that is sold by the company is the Aloha POS software system. This system is sold by Abacus Business Solutions to the customers in the market through a proposition of multiple hardware platforms. The two main types of Aloha POS that are sold by the company in the market include the TableService POS that is based on the windows platform using touch screens, an open architecture, and the QuickService for the fast food customers in the hospitality industry. In addition to the product itself, the company provides value added services to its clients. For instance, the organization offers servicing and installation facility as well as support and training for the Aloha POS for its customer s in the market. The company highlights that its mission is to make the businesses of its customers more productive as well as profitable. The organization has set high standards for operation where it not only targets customer satisfaction but also seeks to provide business wide integrated POS solutions for any type of hospitality and restaurant business in the industry. The main customers of the company include the likes of Lime Fresh Mexican Grill, Green

The Accounting Treatment and Disclosures Related To Three Types of Com Essay

The Accounting Treatment and Disclosures Related To Three Types of Compensation and Other Benefits - Essay Example These services generally have many beneficial impacts on the organization. As such, it is important to reward the employees adequately in the form of compensation and other benefits. The compensation benefits include a set of programs which are aimed at attracting capable employees to a company. The compensation benefits help to motivate the employees to perform better and also help to retain more skills within the organization. A satisfactory compensation will help in reducing the attrition rate in a company and also contribute significantly to human resource management in a business. The three types of compensation benefits considered in this report are share-based compensation which includes stock options and restricted stocks, pension plans and regular base compensation. Share-based compensation is becoming more popular among the local as well as multinational organizations. The benefits of share-based compensation are many. The most noticeable advantage of share-based compensation is that it gives a sense of inclusion to the employees as the share-based compensation is associated with privileges of equity ownership. The main purpose of the share-based compensation benefits is to support the interests of the shareholders, employees as well as the management of the company. If the employees have a stake in the company through the ownership of certain shares, it is highly likely that the employees will perform better to ensure that the sales and profit level of the company is increased. An increase in the profitability and revenue generation of the company would result in an increase in the share prices of the company. If the employees are given share-based compensation benefits, an increase in the share prices would mean benefit for the employee as well. Thus, this acts as a win-win situation for the managers, investors as well as the employees of a business. Share-based compensation is common to both established companies and startup companies.  

Developing a Database System Essay Example | Topics and Well Written Essays - 500 words

Developing a Database System - Essay Example Retailers involved in the sale of PCs are also included for data source. Vendors are another source of data for designing of a database for PC Store. Sales reports kept in manual registers or files are the significant data source for PC Stores database design. Regarding the audience of the inventory management system linked to sales order system include the staff of inventory management, order placement staff, invoicing department, sales management, suppliers, manufacturers, and customers. Requests made by sales department on specific forms are verified by the inventory management staff. Required numbers of items or parts are processed by the order placement staff. Sales’ department collects the customers’ requirements on a specific order forms. Managers manage the day to day activities and analyze the reports and head the meetings to solve the issues. In order to build the inventory management system, information about every product of PCs, customers on every outlet are required to be managed. Customers’ information contains the attributes of name, address, phone number, email, and past transactions. Company can rank its customers on previous purchases of company’s products (Kotler et al., 2009). Product as an entity of database includes information about product name, date of arrival of product, color or model, price, and manufacturer information. It becomes easier to search the information about a product from model, price range, or date. When all data sources have been identified then a developer starts designing the database. Customer, vendor, sales department, suppliers, manufacturers, product, employees; staff and manager are necessary tables. These tables have relations such as customer to sales department, employees to sales department, suppliers to product etc. Some of the constraints like primary key, foreign key and candidate key are also used for tables. After all tables are created, and relations established, then a developer requires

Thursday, October 17, 2019

American Occupation in Japan Essay Example | Topics and Well Written Essays - 1250 words

American Occupation in Japan - Essay Example On a realistic echelon, the prime intention of this occupation was to defuse the military, restructure the educational scheme, grant power to the local level, and offer suffrage to women. To commence with, the tremendous success of this occupation was primarily the constitution (Tsutsui 268). The writing of the Japanese constitution occurred during this occupation and presently, it remains wholly unchanged. It is imperative to state that this served as the initial step of the occupation in democratizing Japan. The greatest predicament in the Meiji constitution (Tsutsui 270) was that it did not comprise a system of balance and checks since every component of the government would perform prior to the emperor’s name. Therefore, the constitution had to delineate the roles of the government with apparent responsibility lines. There was the creation of the House of chancellors, the House of Representatives, the cabinet, and judiciary with conventional purposes and responsibilities. The emperor reduced to a rank of common citizenship and the Japanese could no longer be submissive to him (Tsutsui 272). It is worth denoting that this was another mode of democratization. Moreover, this occupation attempted to reorganize the authority relationships in Japan. The Americans strived to break up bureaucracy, develop a sturdy labor movement and union, and finally reallocate resources throughout the economy (Tsutsui 275). Another goal of this occupation was social liberalization. The Americans strived to inculcate the human rights values into Japanese politics and societal ideas. It is imperative to state that the Japanese citizens had a fuzzy idea of human rights, but the Americans strived to delineate them in terms of liberty to dialogue and political freedom. It is worth denoting that this occupation founded a democratic model for Japan and laid the basis for many institutions. It was a successful operation as it ensured an indefinite excellent relationship between Ja pan and America (Tsutsui 278). However, this occupation had some limitations. Some points arise particularly from the American relationship with Japan. Despite the persistent application of mutual pressure by America on the policymakers of Japan, it is debatable on the extent of achievements. Concerning the wide adoption of American norms and practices, the record proves to be ambiguous as the market-oriented reform has been partial and inadvertent. Sino-American relation This relation mainly involved the Sino-American crises, mainly related to military affairs. They include the prime crisis that precipitated the involvement of the two nations in the Korean War, and the Taiwan crises in the 1950s (Swaine & Zhang, 133). A principal distinctive feature, of these crises is that they happened at a time when there was antagonism in the Sino-American relations. The nonexistence of any prime crisis during this lengthy interval clearly outlines that both Beijing and Washington saw a similar threat and did not view each other as latent adversaries. Moreover, they could reach a prompt understanding in order to prevent the emergence of another crisis, but these two sides hardy took management measures (Swaine & Zhang 133). The consistent invoked enemy image is another feature of the Sino-American crisis. Both sides shaped each other’s image before the Korean War in 1950 (Swaine & Zhang 134). The leaders in both countries immensely shared this