Thursday, October 31, 2019

Comparative Legal System Article Example | Topics and Well Written Essays - 3000 words

Comparative Legal System - Article Example During the early centuries, the judges and justices were responsible for adapting the Writ system to meet everyday needs, and the application of a mixture of common sense and precedent in order to create a body of internally consistent law. For example, the Law Merchant began in the Pie-Powder Courts (a corruption of the French "pieds-poudr's" or "dusty feet", meaning ad hoc marketplace courts). "As Parliament developed in strength, and subject to the doctrine of separation of powers, legislation gradually overtook judicial law making so that, today, judges are only able to innovate in certain very narrowly defined areas. Time before 1189 was defined in 1276 as being time immemorial." (English law English law. http://en.wikipedia.org/wiki/English_law) According to Mary Ann Glendon, "Reception of a legal system depends upon the fusion of the local culture with that of the settling nation ... Where a cultural assimilation has occurred, the English common law has shown remarkable capaci ty for adaptation." (Mary Ann Glendon et al 1999) During the British Empire, Britain exported its legal system to various countries in the Commonwealth of Nations, including the United States, and many aspects of the British legal system have persisted since the withdrawal of the British. English law before the Independence Wars still has an influence on the law in the United States, and English law provides the basis for some American policies and legal traditions. Many states that were formerly subject to English law (such as Australia) continue to recognise a link to English law - subject, of course, to statutory modification and judicial revision to match the law to local conditions - and decisions from the English law reports continue to be cited from time to time as persuasive authority in present day judicial opinions. For a few states, the British Privy Council remains the ultimate court of appeal (English_law http://www.smso.net/English_law)Similarly, because the UK remains a strong international trading nation, "international consistency of decision making is of vital importance, so the Admiralty is strongly influenced by Public International Law and the modern commercial treaties and conventions regulating shipping" (http://www.nationmaster.com/encyclopedia/English-law) As former colonists of Great Britain, the Founding Fathers of the United States tended to adopt much of the British legal system. The United States, Great Britain and Wales all have a law that is made by courts (common law) rather than laws handed down by a monarch or some other central governmental authority such as a legislature. The jury, a panel of ordinary citizens chosen to decide a case, is an integral part of our common-law system. Use of juries to decide cases, is a distinguishing feature of the American legal system. Few other countries in the world use juries as we do in the United States. Over the centuries, many people have believed that juries in most cases reach a fairer and more just result than would be obtained using a judge alone, as many

Tuesday, October 29, 2019

Control For Induction Motors Essay Example for Free

Control For Induction Motors Essay Project paln Soft starter and soft stopping for speed control for induction motors Introduction The project is entirely on the design and development of a soft starter converter that will satisfy and implement the soft starting and soft stopping for speed control of an induction motor. Soft starters also called solid state starter are used for gentle starting and stopping of induction motors. Pumps, centrifuges, compressors, escalators, belt conveyors, mills, fans, stone crusher and saws are typical applications. If a motor is not adequately protected the sudden change in rotation torque and speed, which occurs on starting and stopping will jolt the equipment linked to it. Over the long term this can lead to increase in mechanical wear of gearboxes, clutches, transmission and conveyor systems. Abrupt starting and stopping can also damage goods being handled by the mechanical equipment. For instance, the filling and distribution of glass bottles and containers loaded on to a conveyor holds a potential for a minor disaster. One sudden jerk during starting and stopping will surely cause the entire process line to engage in a mass of broken glasses and dripping liquids or sticky product. With pumps soft starters eliminate pressure shocks in pipes and valves when the pipe pump starts or stops. This poses a particular safety hazard when the transfer of volatile and/or inflammable liquid is involved. Background Information Soft starter controllers provide the soft starting and stopping of induction motors with no beyond high maximum currents, motor heating or mechanical shocks. However this is more vital for most of large machines because there is entirely reduced starting torque and reduced impacts on mechanical parts, however this result in an increase in the equipment lifespan. Also the soft starting and soft stopping result in mass energy saving the power supply since the starting currents and voltages are low, meaning the amount of power dissipated at the start is less as compared to a normal start without a soft start. An induction motor soft starting and soft stopping inverter is a vital aspect which serves as a premier protection to the machine itself and the entire production line. The outmost need for soft starting and soft stopping is to prescribe the inrush currents that an induction motor absorb when being started from rest. This needs attention because it eventually causes the line voltages to decline, which is nevertheless a danger to such loads sensitive to low voltages. These inrush cerrents and high starting voltages are major cause to mechanical stress; when large currents enters the motor windings a larger magnetic field is being produced which can cause some parts to attract and repel Objectives The main project aim is to design and develop a soft starter converter that implements the soft starting and soft stopping of an induction motor. Specifically, the project will focus on the following objectives 1. To design and develop the hardware components of the project that features the soft starting and soft stopping of an induction motor. 2. To design and develop the software hardware that could be integrated to the hardware 3. To demonstrate the converter responses to starting and stopping operations of an induction motor. Methodology Justification soft starter controllers ensure the soft starting and stopping of induction motors without excessive peak currents, motor heating or mechanical shocks.This has a particular importance in large machines due to the power consumption in the megawatt range. The energy adsorbed by the motor winding and the shock torque have both and important impact in the mechanical parts and consequently, influences the equipment lifetime. they allow the reduction of cable section and the energy peak power from the electricity supplier. An induction motor soft starting and soft stopping inverter is a vital aspect which serves as a premier protection to the motor lifespan and http://www.ctiautomation.net/Control-Techniques-Soft-Starters.htm https://docs.google.com/viewer?a=vq=cache:srtLMpIZcMoJ:www.eaton.com/ecm/idcplg%3FIdcService%3DGET_FILE%26dID%3D428122+soft+starter/stopping+induction+motorhl=engl=mypid=blsrcid=ADGEEShf7UdxSK-mMBvBj-zftdxPnL24HsZr2T32U2sCIlpx8wZ1tKtG_L3r51v4roi7xe-vF81v_Qmww-XYxvRGlNfR5yzJBmrupuoU0b35MJVZOBjH1byAnHUh2i8OyPBR8r9Cd-bJsig=AHIEtbS1MVgMGWzC7MHbsX548ilI1M0rEQ

Saturday, October 26, 2019

Problem Based Learning Reflective Account Psychology Essay

Problem Based Learning Reflective Account Psychology Essay The Problem Based Learning (PBL) exercise was entitled The relationship to change. Each Case Discussion Group (CDG), consisting of 7 trainees, had to produce a presentation on this topic. Our CDG decided to look at the relationship of the media in changing attitudes towards mental health, with a focus on the Tripartite Model (Triandis, 1971) to explain attitude formation and Stages of Change Model (Prochaska and DiClemente, 1984, cited in Sarafino, 1998) to think about the process of change. I will reflect on the process of change since starting the PBL for both myself and the group, and how this is reflective of changes that occur in clinical practice, with consideration of these two models. The PBL exercise occurred before we started on placement; as such, there are areas that we did not consider or have time to cover; for example, the relationship of the mental health service and teams in changing attitudes towards mental health, both in the community and within services, and how attitudes about mental health influence therapy. I believe these may be important aspects to reflect upon here. Though we were all of similar ages, we had one male in our group and a variety of different individual characteristics and experiences, although we all shared apprehensions about actually doing the presentation. As the group sessions progressed, there were shifts in the extent of the contributions made by different group members. Initially, I remained relatively quiet and felt quite daunted by the process. As I felt more settled and gained more knowledge about the task in hand, I contributed to a far greater extent and felt able to put my point of view across. I believe as a group we were very respectful of one anothers needs and that this developed as we grew in confidence. There was a general consensus of the title being very vague. I felt that there was a need amongst us to get something done and have something to work on, and we became very task-focused. Having watched the other groups presentations, I realised that we remained task-focused throughout the experience in comparison to other groups who largely reflected on their experiences. This may be reflected in therapeutic interventions whereby time constraints and limited sessions mean that we become more focused on the task at hand and neglect to reflect on the therapeutic process. On reflection, however, our group formed a strong bond at an early stage, perhaps drawn together by the safe environment we created to share ideas and anxieties and the shared goal of wanting to achieve, and this formed the basis of a positive experience of this learning task. As the group evolved and held trust in one another, we felt able to hold different opinions and constructively worked through these until a cons ensus was reached. This is something I feel we would not have achieved so successfully at the beginning due to a need to be liked and please one another and therefore feeling restrained and less willing to share a differing opinion. This may be reflected in clinical practice with clients who may initially feel less able to voice ideas or disagreements with our expressed understandings of their difficulties but are more able to do so as the relationship develops. This can be vital when thinking about formulation and highlights the need to reformulate with new information. Of the six formal sessions that we met together for our CDG, three were attended by our facilitator. This had an impact on the group dynamics; due to this being our first assignment and us being new trainees, there was an inherent need for us to seek reassurance that what we were doing was right and to gain approval from the facilitator when she joined us. I was much quieter when she was present, through anxieties about being evaluated and I noticed as a group, we tended to be more restrained and tentative. Part of the role of a clinical psychologist may be to facilitate groups, both therapeutically and in other settings such as group supervision. The differences that arose in the sessions where we had a facilitator compared with those when we did not may also be reflected in other group settings. Whilst the power differential cannot be removed and the way in which people interact under different circumstances will vary, I have considered how important it is to try to make people fee l as comfortable as they can in such settings, perhaps through sharing experiences and anxieties, where appropriate. This has certainly been a helpful part of my own supervision whereby my supervisor has shared her experiences and mistakes and I have felt more empowered to talk about difficult situations I have faced. However, this is still an area that I need to become more comfortable with; accepting that it is neither required nor desirable to know everything or to get everything right. As a group, we worked productively on the task in hand, setting homework tasks for each of us and to then share these with the group at the beginning of each meeting. This is highly reflective of a CBT framework whereby we were very directive and focused on achieving the goal of getting our presentation written. Through my clinical practice, I have seen how using CBT can fit very well with what some clients want, in terms of them having identified the areas they want to change and wanting practical techniques and homework tasks to enable them to do this. However, there have been other clients I have worked with for whom I have been unsure that a CBT approach was best suited to their needs. One client in particular brought with him each week complex family difficulties. Working within a CBT focused team, I felt constrained to keep to a CBT approach but following supervision and a subsequent consultation with family therapy, alongside the CBT we addressed relational difficulties and th is appeared to bring about change within his system that constituted a shift in his depression. Thinking about how we approached our PBL task, I wonder if we neglected a more holistic approach and in our focus on getting the task done, we missed opportunities to learn from the process and engage with the relationships that were forming and changing. In subsequent CDGs, we have reflected more upon how we have formed and developed as a group but it is perhaps an area we need to remain mindful of due to our apparent need to still remain more task-focused. Models of change Our group decided to look at two models relating to our chosen focus of the relationship of the media in changing attitudes towards mental health. The stages of change model (Procheska and DiClemente, 1992) proposes five stages of change: pre-contemplation, contemplation, preparation, action and maintenance, with relapse also being a feature of the change process. In the service where I am on placement, people are required to be motivated to engage and change, and are thus usually at the contemplation or preparation stage. I was struck by the contrast of these clients and the clients I spent time with when working two shifts on an acute ward as part of my induction. Here, many of the clients were less aware of having difficulties or not wanting to make any changes. I reflected on how different therapy might be with clients at different stages and how different techniques may be employed, such as motivational interviewing, at earlier stages. However, I also considered for whom there w as a problem and whether if the client is not at risk to themselves or others and not in distress, should societys representation of normal mean that such clients are forced to change? In addition, it is important to consider what constitutes significant change. Through working with a client who checks obsessively, I have found that my expectations were different to hers and that she has achieved a reduction in checking that is sufficient for her. This enabled me to consider my own attitudes and beliefs about the distress people experience and how important it is to fully listen to clients and what their goals are. We also looked at the Tripartite model which looks at attitudes and how these are influenced and changed. It suggests that attitudes are comprised of three parts, cognitions, affect and behaviour, and that attitudes can be changed by working on any one of these parts, for example through new information, direct experience or forced behaviour. I was very motivated to look at attitudes towards mental health since I feel there is still a lot of stigma attached to mental distress and was interested in the role that the media plays in both supporting and trying to address this, whilst also being aware that this can vary depending on other factors such as culture. I was surprised during my induction on the inpatient ward by the views held by some staff towards the clients whereby some clients were seen as their diagnosis, rather than as people, and were consequently infantilised and not treated as individuals. I found myself trying to get to know more about the clients than just their diag nosis by engaging with them through activities, such as playing pool. The therapeutic relationship is a vital and influential component of therapy (Roth and Fonagy, 2005). It is interesting to think about how both the therapists and clients attitudes towards mental health difficulties impact upon the therapeutic relationship. When working with clients in a therapeutic setting, I am now more mindful of seeing beyond their distress and thinking more holistically, as well as consideration of our attitudes towards the distress and drawing upon the resources and resilience clients have already. My experiences on the ward also enabled me to think more about staff and team attitudes in general. As the role of clinical psychologists changes and they take on more consultative and leadership roles, team dynamics will be an important factor to consider and thus changing attitudes may be an important factor to consider, through increased training and supervision. Final Reflections It has been interesting to reflect on the dynamics of our group. I feel that as a group we bonded very quickly and that this was significantly aided by a shared goal of getting our presentation done alongside a common theme of feeling quite anxious about getting it right. Through the experience of shared learning, we were able to draw upon a wealth of experiences and construct a presentation that employed humour to get our message across in a format that felt safe and fun for us. This very much reflected our CDG meetings which employed humour but focused on the task at hand. It has also enabled me to think about my own use of humour and how I feel that this can be an important factor in clinical practice to aid the therapeutic alliance and to enable clients to alleviate some of their distress. As a group, I think that we moved from tentative explorations of ideas to being more empowered to express and manage differing opinions and achieving an agreed consensus following discussions. With hindsight, I believe we neglected to reflect sufficiently on the process of change for us as a group during the PBL task but that we are now more aware of our need to develop these skills further. Our presentation focused on attitude change towards mental health difficulties. I believe there is a large role for clinical psychologists, and mental health teams, to consider the attitudes we hold and to consider how we view different client groups, mental health difficulties and diversity. I believe that being aware of such attitudes is an important factor in acknowledging the need for change in some attitudes, alongside training and good supervision. I hope that as my own training and confidence develops, I will feel better equipped to be able to facilitate changes in such attitudes.

Friday, October 25, 2019

Free Will Vs. Determinism Essay -- Free Will Choosing Fate Essays Pape

Free Will Vs. Determinism I. Determinism   Ã‚  Ã‚  Ã‚  Ã‚  Before one can properly evaluate the entire debate that enshrouds the Free Will/Determinism, each term must have a meaning, but before we explore the meaning of each term, we must give a general definition. Determinism is, "Everything that happens is caused to happen. (Clifford Williams. "Free Will and Determinism: A Dialogue" pg 3). This is the position that Daniel, a character in Williams’ dialogue, chooses to believe and defend. David Hume goes a little deeper and explains in his essay, "An Enquiry Concerning Human Understanding of Liberty and Necessity," that determinism is this: "It is universally allowed, that matter, in all its operations, is actuated by a necessary force, and that every natural effect is so precisely determined by the energy of its cause, that no other effect in such particular circumstances could possibly have resulted from it" Pg. 54). No matter how deep you decide to delve into the definition, it is still the same. The idea behin d determinism is that everything has a caused and has happened because of that cause. If the circumstances were repeated exactly the same, there could be no other outcome. For a determinist, life is nothing but cause and effect.   Ã‚  Ã‚  Ã‚  Ã‚  In Williams dialogue, Daniel, who represents the deterministic ideology, gives one main argument. He states that there is an enormous number of events which science has found causes for, including events involving human behavior. This gives us good reason to believe all events are caused. If the lights in the building suddenly go out, there is a reason for it, we may not know what the reason is, but the is a cause for the failure in the lights. While this seems like a sound argument, Frederick, the free will defender, has a legitimate problem with this reasoning.   Ã‚  Ã‚  Ã‚  Ã‚  Frederick claims that science has observed and found causes for only a small portion of events. There is no record that started at the beginning of time, and most of what we know we have observed in the last few hundred years. To base an argument on this evidence is absurd. We know very little in light of the entire span of human history. Because of this, we should not infer that everything has a cause. That is as if looking at one lawn of grass that is yellow and dead, and concluding from that, that all grass is yellow. This sounds simply absurd, but... ... then why punish us for our character? It would accomplish nothing because we cannot change our character. Therefore, responsibility and determinism are not compatible.   Ã‚  Ã‚  Ã‚  Ã‚  The conflict of responsibility and determinism will only be solved if everyone could agree on one single, all-inclusive definition of determinism. There have been conflicts since the beginning of time, and conflicts will remain until the end of time. The question of free will and determinism will endure past all of the other conflicts, but to each their own. I totally agree with Hume. Edwards considers Hume’s views, "a quagmire of evasion," but I consider the idea of natural necessity and liberty coexisting very well thought out and quite comprehensible. Hume’s view takes all I believe about determinism and free will, and puts it together in a non contradicting way. We truly have the power of acting or not acting, while at the same time we work inside the regularities of the human nature. I cannot totally agree with hard determinists, nor can I agree with free willists, but Hume incorporates the two and ends up with a philosophy that explains how the evidence of both sides can coexist. To each their own.

Wednesday, October 23, 2019

A Walk in the Woods

Bill Bryson’s 1998 literary work takes its readers’ imagination, as the title suggests, to â€Å"A Walk in the Woods.†The author returning back to the United States after living for 20 years outside the country decided to the reconnect with his home landscape and hikes the Appalachian Trail. In Bill Bryson’s account of the Appalachian Trail, both historical and environmental information is received by the readers. More specifically the environmental crisis and its causes are dealt in this Bryson’s book. For some, environmental issues are quite uninteresting and dull.However, readers of this book are still compelled to continuously read it because of its humor and thought-provoking exploration of the wild. Moreover, Bill Bryson’s style and themes informs and teaches several environmental issues and concerns to its readers while entertaining them. Though, by scanning the history and events in other areas, it can be said that Bill Bryson’ s accounted environmental problems in his book does not occur solely in the Appalachian Trail, rather it is a world-wide problem.Bill Bryson accounts that the Appalachian Trail is 2200 miles, and I think he is telling the truth. Based on what I have learned (or know) about, the Appalachian Trail is a 2,147-mile-long footpath from Georgia to Maine, which follows the ridgetops of the fourteen states through which it passes.Although other people had put forth similar ideas, Benton MacKaye’s article â€Å"An Appalachian Trail: A Project in Regional Planning,† is usually looked upon as having presented the impetus for the Appalachian Trail.A regional planner, MacKaye saw in the post-World War I era an America that was becoming hastily urbanized, machine-driven and far detached from the positive reinvigorating aspects of the natural world. In addition to endowing with obvious recreational opportunities, the trail he imagined or visualized would be a linking line between a se ries of everlasting self-sustaining camps in wherein cooperation would replace antagonism, trust replaces suspicion, and emulation replaces competition.Encouraged and supported by relatives, friends, and like-minded acquaintances, MacKaye set about disseminating the idea of an Appalachian Trail to anyone who would listen, as well as officials of the National Park and National Forest Services.Particularly interested to the trail concept were members and officers of previously existing trail organizations such as the Green Mountain Club of Vermont, the New England Trail Conference, and the Appalachian Mountain Club. Not overlooking the advertising power of the press, MacKaye also solicited the help of newspaper reporters and columnists throughout the Northeast.The idea struck a chord form in October 1923, just two years after publication of his article, the first few miles of trail to be built particularly as a part of the Appalachian Trail were opened to the public in the area of Har riman and Bear Mountain State Parks in New York by the then recently formed New York-New Jersey Trail Conference.Acting upon a request by MacKaye and others, the Federal Societies on Planning and Parks met in Washington, D.C, in March 1925, for the intention of furthering action on the Appalachian Trail.There, an organization establishing the Appalachian Trail Conference (now known as Appalachian Trail Conservancy, committed to the protection and management of the trail) was adopted, and William A. Welch, of New York’s Palisades Interstate Park Commission, was named its chairman. Throughout the meeting, it was determined that the Appalachian Trail would run approximately 1,700 miles (which is 500 miles less than Bill Bryson’s measurement or the length of Appalachian Trail today) from Mount Washington in New Hampshire to Cohutta Mountain in northwestern Georgia.A northern extension was to stretch to Mount Katahdin in Maine while a southern addition would reach all of th e way to Birmingham Alabama. Among various branch routes that were also proposed, one was to follow the Long Trail in Vermont, another would extend into the Catskills, and another was to run along the Tennessee River to Kentucky.

Tuesday, October 22, 2019

Jorge Amados Gabriela, Clove and Cinnamon essays

Jorge Amados Gabriela, Clove and Cinnamon essays Jorge Amadoi ¿Ã‚ ½s i ¿Ã‚ ½Gabriela, Clove and Cinnamoni ¿Ã‚ ½ is a tale of different stories in the township if Ilhi ¿Ã‚ ½us, which is a province of the larger city of Bahai, situated in the northern Brazil. This is not a long novel, as epics go; but it is easy to place the details of the narrative: the political infighting, legal wrangles, unrequited love, romantic conquests, and the progress of women within the microcosm that was Ilhi ¿Ã‚ ½us in the early part of the twentieth century, against the back drop of the coming of capitalism and profiteering. This is also a microsm of the struggle of Latin America against the burgeoning hegemonies of the developed Western Hemisphere. (1) Despite the name of the novel, it is not only about Gabrielai ¿Ã‚ ½if indeed she is the heroine (for this novel has plenty of heroes and heroines).This essay will be written to describe the geographicali ¿Ã‚ ½cultural, political and economici ¿Ã‚ ½aspects that the novel. Ilhi ¿Ã‚ ½us is a microcosm for the third world development in Brazil, and, indeed, the rest of Latin America. The forces of capitalism take root. The drive to profits above all displaces and dispossesses people. Ilhi ¿Ã‚ ½us is not a big town. It is a mere province of one of the lesser known, but nonetheless growing cities of northern Brazili ¿Ã‚ ½Bahia. While the Ilhi ¿Ã‚ ½ans see Bahia as the center of their culture, the rest of the world might be more inclined to remember the cities of Rio de Janeiro and Sao Paolo. But Bahia does provide the backdrop against which Ilhi ¿Ã‚ ½ians measure their progress. Ilhi ¿Ã‚ ½us was created by the removal of the virginal, Amazonian rainforests in order to make way for cacao plantations to meet the growing demand for chocolate in developed parts of the world. The quest for cacao and land that cultivated it and the greed for the revenue it might generate, much like the frontiersman during the long-defunct California Gold Rush, gave rise to i ¿Ã‚ ½Colonels.i ¿Ã‚ ½ These were so...

Monday, October 21, 2019

Free Essays on The Psycholgy Of Colors

Red is extremely dominating. It Can elevate blood pressure and respiratory rate. It has the effect of stimulating people to make quick decisions and increase expectations. Red is an attention grabber. Restaurants often use red as a decorating scheme because of its appetite stimulant function. but rooms with a red accent can cause people to lose track of time, thus are favored by bars and casinos. resulting in excessive stimulation of the eyes, causing eye irritation. It also speeds metabolism. Paint a room yellow, you will make babies cry and grown-ups lose their tempers in it. Furthermore, yellow is not a good color for notepads and monitor background. Although it can alert our brain and enhance concentration, it is hurtful to our eye. A softer tint, however, will make it more pleasant to look at. Dingy yellow represents caution, decay, sickness, jealousy and duplicity. Choice of shade is important when it comes to yellow. A softer tint, however, will make it more pleasant to look at. Dingy yellow represents caution, Yellow, the cheerful sunny yellow, is an attention getter. It is the most visible color of all the colors, it is the number one attention getter. Yellow is a spiritual color that is a symbol of the deity in many religions. Blue is one of the most popular colors. To American consumers of both genders, blue is the favorite color. However, be careful when using blue in association with food - it is a natural appetite suppressant and can be repulsive in some instances. Blue relaxes our nervous system. It has a sobering effect on the mind and can cause people to be more contemplative, which is the opposite reaction as red. Peaceful, tranquil blue, which is a good color for bedrooms, causes the body to produce calming chemicals. Darker shades of blue, however, can feel cold and depressing. People retain more when reading information written in blue text. Blue represents solitude, sadnes... Free Essays on The Psycholgy Of Colors Free Essays on The Psycholgy Of Colors Red is extremely dominating. It Can elevate blood pressure and respiratory rate. It has the effect of stimulating people to make quick decisions and increase expectations. Red is an attention grabber. Restaurants often use red as a decorating scheme because of its appetite stimulant function. but rooms with a red accent can cause people to lose track of time, thus are favored by bars and casinos. resulting in excessive stimulation of the eyes, causing eye irritation. It also speeds metabolism. Paint a room yellow, you will make babies cry and grown-ups lose their tempers in it. Furthermore, yellow is not a good color for notepads and monitor background. Although it can alert our brain and enhance concentration, it is hurtful to our eye. A softer tint, however, will make it more pleasant to look at. Dingy yellow represents caution, decay, sickness, jealousy and duplicity. Choice of shade is important when it comes to yellow. A softer tint, however, will make it more pleasant to look at. Dingy yellow represents caution, Yellow, the cheerful sunny yellow, is an attention getter. It is the most visible color of all the colors, it is the number one attention getter. Yellow is a spiritual color that is a symbol of the deity in many religions. Blue is one of the most popular colors. To American consumers of both genders, blue is the favorite color. However, be careful when using blue in association with food - it is a natural appetite suppressant and can be repulsive in some instances. Blue relaxes our nervous system. It has a sobering effect on the mind and can cause people to be more contemplative, which is the opposite reaction as red. Peaceful, tranquil blue, which is a good color for bedrooms, causes the body to produce calming chemicals. Darker shades of blue, however, can feel cold and depressing. People retain more when reading information written in blue text. Blue represents solitude, sadnes...

Sunday, October 20, 2019

Mise-En-Scene Hp Essays

Mise-En-Scene Hp Essays Mise-En-Scene Hp Essay Mise-En-Scene Hp Essay Harry Potter films are great interpretations of the film element mise-en-scene. In The Harry Potter and the Deathly Hallows part two; such sub elements that relate to the mise-en-scene include the setting, costume, figure, expression, movement, lighting, color, and objects within the frame. Putting together each scene or frame to make all of the sub elements that in full make up the mise-en-scene determines the mood of both the scene and the characters in it. An audience is able to get a sense of what is happening within the scene that is used with unspoken words before the actual movie hits theatres. Harry Potter and the Deathly Hallows part two begins with showing Harry Potter standing in his doorway showing the full setting. The setting included an average styled house, which gave way to knowing who part of Harry Potter as a person is. He has grown up in his uncle’s house and being surrounded by the atmosphere where being abnormal made him isolated and unwanted. In this scene where Harry has a backpack on his back, the door ajar, and letting his owl go shows that he has grown into the man that he eventually turned out to be which is someone who isn’t afraid to step out of the box and be there for his loved ones. It’s nighttime and the mood is one that is mysterious and dark. His facial expression within this scene is one of great melancholy and sullen. His expression, objects being worn, and setting is showing that he will be setting on a mysterious adventure. Another sub element of a mise-en-scene is costume. Harry Potter is wearing jeans, a simple red t-shirt, and a jacket. This simple combination of clothing suggests the year the movie setting is taken place. His clothes suggest that he is neither wealthy nor poor, however just middle class. Lastly his glasses are his trademark, because he is always wearing them throughout each of the films. As Harry is letting his owl go, his expression is one of regret. He regrets the separation of him and his owl because ever since he first received the letter of acceptance into Hogwarts, Harry and Hedwig have been the greatest of friends. The distance between Harry and Hedwig gives a balanced shot between the two. Lighting brings out much in this scene. Harry is wearing a red t-shirt that brings much added attention to him because his entire setting around him is a neutral dark night. The red is used to draw the audience to pay closer attention to him because he is known as an important character. The red also suggests that he has much love for his owl as well as his family and friends who are compared to the conflicting internal evil that feature within the film. The overall low-key use of light within this scene is used to specifically reflect Harry Potter’s gloomy expressions. The overall use of a mise-en-scene within the Harry Potter and Deathly Hallows part two is greatly used. Mise-en-scene relates to the theatrics of space and how it is then constructed for the camera. How the space is arranged and how each actor and the objects within the space relate within it render exciting topics on film. The balance that exists between the action and the scene itself speaks louder than the actual words being said by the actors themselves. The use of each actor, the costumes, and the lighting used throughout Harry Potter made the mise-en-scene flow perfectly. The audience always understood what was happening throughout the movie whether it be to make the mood a light-hearted or serious.

Saturday, October 19, 2019

Although continued industrial development is important and Essay

Although continued industrial development is important and inevitable,companies must take care of the environment in the process - Essay Example Environment protection is the method of preserving the natural environment regarding the interests of the stakeholders, including customers, employees, government and the other influencing bodies with utmost priority. It has often been argued in this regard that the pressure of over-population (allegedly encouraged by business sector growth within a given region) and continuous industrial development acts as the main determinants of environmental degradation (Tamazian and Rao 4-6). Subsequently, such external pressures in terms of the social responsibilities of the corporate bodies have recently been motivating them to go greener by lessening their rate of environmental degradation and at the same time, ensuring continuous growth to meet the customer demand to achieve economic development. Hence, a two way prolonged approach has to be followed in parallel by companies in the modern era. By following steps like switching from non-renewable sources of energy to renewable sources, targe ting cleaner and hygienic production procedures, reusing wastes and implementing strategies that focus on environment friendly product designing, an organization can easily maintain the sustainable growth (Koh, Ghazoul, Butler, Laurance, Sodhi, Mateo-Vega and Bradshaw 67-71). THESIS STATEMENT As can be observed from the above discussion, companies are certainly witnessing pressure to consider environmental sustainability with almost equal and even at times with more importance than their profitability concerns, in the advent of continuous industrial development. This thesis will correspondingly, aim at assessing the need for taking environmental care measures by companies and the associated challenges, by synthesizing on the argument that â€Å"Although continued industrial development is important and inevitable, companies must take care of the environment in the process†. NEED FOR ENVIRONMENTAL CARE FOR COMPANIES IN CONTINUED INDUSTRIAL DEVELOPMENT The series of debates emp hasizing industrial development implications on the natural environment in the forms of deforestation, climate change as well as air and water pollution has apparently contributed to the need for environmental care within the modern organizations (Esty & Winston 7-12). From a generalized point of view, it has been argued in the recent era that as a consequence of industrial development at a rapid and a continuous rate, need for resources among companies have also increased manifolds. In order to suffice this growing need for resources, especially energy resources and natural ingredients, companies have been sourcing large amounts of these assets from the environment. Such extractions have further resulted in various environmental challenges, majorly attributed in the form of climate change, unsustainable minimization of natural resources and imbalances in the biological cycle on earth (Esty & Winston 35-40). For instance, Geist and Lambin argues that the major proximate causes of en vironmental degradation through deforestation as a consequence of industrial development are unplanned agricultural expansion, irresponsible wood extraction and infrastructural expansion through building roadways and city areas in support of urbanization as observable in Africa, Asia and Latin America (5-15). Subsequently, these risk factors have been inhibiting the stability of the

Friday, October 18, 2019

Business organisation Essay Example | Topics and Well Written Essays - 2500 words

Business organisation - Essay Example As such a firm’s response to market changes is structured by its form of capitalism, which has its own features like particular management structure, systems, culture, and legal governing bodies. Thus, success and failure of an enterprise depends on its investment strategy in different system structures and personnel. Accordingly, the British SMEs follow the personal form of capitalism. It is significant to verify how this personal form of capitalism has helped the British SMEs to flourish. Let’s consider some stats on British SMEs in this regard (Chandler [1990]. According to BT Business special report by Bourne (July 2007), importance of small businesses in British economy can be judged from the number of enterprises in the UK, which is 4.3 million, 99.3% of which have less than 50 employees on their roll. Small businesses generate about 10.3 million jobs in the UK, which is 46.8% of all jobs. Turnover of 36.4% UK businesses is above  £800 billion annually. Technology is a big reason according to BT Business report in the expansion in SME’s and it is an add-on to the smaller businesses tradition of collectively working by building further on personal relationships. By getting their business online, SMEs are trying to scale the ladder of progress. Some stats to consider: 60% businesses have online presence, 2% use the online medium for advertisement, 9% are listed on other websites, 8% have a totally dedicated online strategy and 21% have no web presence. About three-quarters of small businesses (74%) view the internet as an important tool in achieving their business targets in the approaching 5 years and 63% businesses assume that they can better compete with bigger players and varied markets through internet. Personal capital being the plus factor of British businesses, they work in the direction of personal relationship and winning the faith of their customers,

Social Effects of the War in Iraq Essay Example | Topics and Well Written Essays - 500 words

Social Effects of the War in Iraq - Essay Example The worst struck by wars are people directly involved in the war - soldiers, their families and Iraqi civilians. These individuals critically create a society. Attitude formation of Iraqi civilians towards the Americans will expectedly be very unforgiving. They will be desperate to seek revenge from them for tearing apart their homes and killing their children for no apparent reason. Even though no American was personally involved in this except for the US government and the forces, the Iraqi civilians will develop a deep hatred for all Americans as it will remind them of their perfect lives that they ruined. (Farris, 2002) Attitude measurement is a quantitative technique used to measure the change in attitude towards a certain object (Bohner & Wnke, 2002). In this particular case the attitude measurement will be to see which factors have influenced change in the minds of the Iraqi civilians about Americans on the whole and especially George Bush. As said before, it comes as no surprise that individuals directly involved in the war will develop an extremely negative impression of the Americans. But those individuals, who were not directly involved, like the American civilians, have developed a sympathetic attitude towards the Iraqi people. This is because Americans are highly aware and they are much more civilized than Iraqi people. They value life more.

Brief Case analysis Essay Example | Topics and Well Written Essays - 750 words

Brief Case analysis - Essay Example Switching cannot be done since Varsity team had an unblemished and recognized physical gain over Junior Varsity boat and could still beat the Junior Varsity team. An essential issue arises as Varsity boat is decelerating down because of employing individuals in the boats. A fundamental query worth noting is whether this was an obligatory undertaking and why it had to happen. No one was a leading light while several others were team disrupters. Rowing on the water as a team is yet another question that arises. What should the two teams do about it? Finally the last issue that arises is whether the army crew team can be likened to an organizational team. The answer is certainly no due to incapability to substitute hastily each of the team members. A good decision needs to be made by evaluating the situation at hand, assessing the different options available and coming up or deciding on a solution that will affect the long-term performance of both teams in a positive way. In regard to promoting junior team to a varsity team, one crucial question arises that needs to be addressed i.e. whether this will have an effect on the performance of the team as a whole and whether the all the junior varsity team members qualify to join the varsity team. Making a wrong decision can heavily impact negatively on the performance of the crew and as a result, special attention has to be given when deciding on this option. The junior team members cannot be promoted to Varsity team. Keeping the members in their original teams and trying to intervene to improve on the performance of both teams seems pleasant as it ensures that both teams add in serious effort towards attaining their key goals and objectives. When it comes to switching a small number of team members of each group, a significant question has to be taken into consideration before making the step i.e. which

Thursday, October 17, 2019

Marcus allius Essay Example | Topics and Well Written Essays - 750 words

Marcus allius - Essay Example Most of the expressions that Aurelius portrays in his advice to himself employ a much-defined strategy of approaching life. Accordingly, this section of the essay elaborates the manner in which he wants to live his life. Remember, the actual circumstance dictates that he loves his life as a scholar. Accordingly, the philosophy or attitude of his life considers the fate of so many things as personal. That is; it the duty of anyone, including himself, to determine what kind of life he would like to live. He believes that there are four core things besides any other form of jurisdiction. That is; there is oneself, the flesh, spirit and the reasonability level (Aurelius 6). Therefore, Aurelius does not believe in being a slave of his life. Aurelius has the guts and attitude to face issues especially as they arise. That is; issues that affect life deserve immediate attention. According to most of his arguments, he possesses numerous proposals of using formidable force to extinct what he discerns as evil and inappropriate to live. The perception of facing life on prompt dimensions and argumentative life could facilitate further action by Aurelius. For instance, his ideology of life is based on what he aims at doing in the present. For instance, he considers everything that gets done or says as paramount. The value of life to a supernatural perception is not part of his dual reasoning behind life. This ideology is one of the facilitating ideologies that boosts his attitude towards sin (Aurelius 7). Sin is an action. It could get committed on a willing or an unwilling basis. For instance, some of the sins that we commit are actually out of the urge while others are out of anger. Anger is justified to lead towards sin, such as killing. This differs from the perception of killing or even extracting sin from the society with regards to desire. There is no concept in forgiving if sin got desired (Aurelius 10). The entire philosophical interpretation of

Should Animals be Used in Medical Research Paper

Should Animals be Used in Medical - Research Paper Example When preliminary tests on animals provide promising results, only then these studies are conducted on human beings. Therefore, the use of animals in medical research has been extremely useful in understanding the human body and the changes in functions when dealing with a disease. Hence, animals provide a good testing ground to conduct medical research and should continue to be used within the limits of the code of ethics. This paper will examine the historical background concerning the use of animals in medical research and closely examine the different perspectives pertaining to it. It will also elaborate my arguments supporting the use of animals in medical research and why I feel it is especially critical to do so in this day and age. Relevant History and Background The use of animals in medical and behavioral studies can be traced back to ancient Greek writings which record that Aristotle, the Greek philosopher conducted experiments on live animals. In fact, Aristotle argued tha t, â€Å"animals, having sense perception but lacking reason, fall below humans in a natural hierarchy and are therefore appropriate resources for human purposes† (DeGrazia 3). ... Traditionally, the moral status of animals has been shaped by religion and philosophy. The Bible mentions that God created human beings in His own image and gave him authority over all that was created – including animals. According to DeGrazia, the Bible reinforces the Aristotelian view of animals of using them for human purposes (3). Christian philosophers like Augustine and Thomas Aquinas also emphasized that since animals cannot reason, they are subordinate to human beings (DeGrazia 3). However Hinduism and Islamic beliefs consider animals to have some degree of rationality and at times consider them on par with human beings (DeGrazia 3). Current medical research practices ensure only the least number of the most appropriate animal is used. Again, the U.S. federal law requires all animals to be treated humanely and that they should experience the least amount of pain and distress when used in medical research. For as long as animals have been used for medical research, the re have been people and groups fighting for animal rights through writings and peaceful protests. However, as the experimentation on animals increased over the years, so did the controversy and criticism concerning it, especially with respect to the practice of vivisection – a process which involves conducting surgery on living organisms, usually animals, for physiological or pathological investigations (DeGrazia). Overview of Different Positions on This Issue Broadly there are two opposing positions concerning the issue of the use of animals in medical research: In Favor of Animal Research: The major argument of people favoring animal research is that using animals for medical research is acceptable if the

Wednesday, October 16, 2019

Brief Case analysis Essay Example | Topics and Well Written Essays - 750 words

Brief Case analysis - Essay Example Switching cannot be done since Varsity team had an unblemished and recognized physical gain over Junior Varsity boat and could still beat the Junior Varsity team. An essential issue arises as Varsity boat is decelerating down because of employing individuals in the boats. A fundamental query worth noting is whether this was an obligatory undertaking and why it had to happen. No one was a leading light while several others were team disrupters. Rowing on the water as a team is yet another question that arises. What should the two teams do about it? Finally the last issue that arises is whether the army crew team can be likened to an organizational team. The answer is certainly no due to incapability to substitute hastily each of the team members. A good decision needs to be made by evaluating the situation at hand, assessing the different options available and coming up or deciding on a solution that will affect the long-term performance of both teams in a positive way. In regard to promoting junior team to a varsity team, one crucial question arises that needs to be addressed i.e. whether this will have an effect on the performance of the team as a whole and whether the all the junior varsity team members qualify to join the varsity team. Making a wrong decision can heavily impact negatively on the performance of the crew and as a result, special attention has to be given when deciding on this option. The junior team members cannot be promoted to Varsity team. Keeping the members in their original teams and trying to intervene to improve on the performance of both teams seems pleasant as it ensures that both teams add in serious effort towards attaining their key goals and objectives. When it comes to switching a small number of team members of each group, a significant question has to be taken into consideration before making the step i.e. which

Tuesday, October 15, 2019

Should Animals be Used in Medical Research Paper

Should Animals be Used in Medical - Research Paper Example When preliminary tests on animals provide promising results, only then these studies are conducted on human beings. Therefore, the use of animals in medical research has been extremely useful in understanding the human body and the changes in functions when dealing with a disease. Hence, animals provide a good testing ground to conduct medical research and should continue to be used within the limits of the code of ethics. This paper will examine the historical background concerning the use of animals in medical research and closely examine the different perspectives pertaining to it. It will also elaborate my arguments supporting the use of animals in medical research and why I feel it is especially critical to do so in this day and age. Relevant History and Background The use of animals in medical and behavioral studies can be traced back to ancient Greek writings which record that Aristotle, the Greek philosopher conducted experiments on live animals. In fact, Aristotle argued tha t, â€Å"animals, having sense perception but lacking reason, fall below humans in a natural hierarchy and are therefore appropriate resources for human purposes† (DeGrazia 3). ... Traditionally, the moral status of animals has been shaped by religion and philosophy. The Bible mentions that God created human beings in His own image and gave him authority over all that was created – including animals. According to DeGrazia, the Bible reinforces the Aristotelian view of animals of using them for human purposes (3). Christian philosophers like Augustine and Thomas Aquinas also emphasized that since animals cannot reason, they are subordinate to human beings (DeGrazia 3). However Hinduism and Islamic beliefs consider animals to have some degree of rationality and at times consider them on par with human beings (DeGrazia 3). Current medical research practices ensure only the least number of the most appropriate animal is used. Again, the U.S. federal law requires all animals to be treated humanely and that they should experience the least amount of pain and distress when used in medical research. For as long as animals have been used for medical research, the re have been people and groups fighting for animal rights through writings and peaceful protests. However, as the experimentation on animals increased over the years, so did the controversy and criticism concerning it, especially with respect to the practice of vivisection – a process which involves conducting surgery on living organisms, usually animals, for physiological or pathological investigations (DeGrazia). Overview of Different Positions on This Issue Broadly there are two opposing positions concerning the issue of the use of animals in medical research: In Favor of Animal Research: The major argument of people favoring animal research is that using animals for medical research is acceptable if the

World War II in Japan Essay Example for Free

World War II in Japan Essay A case of implementation of import substitution industrialization can be examined with the help of the example of Brazil. Brazil was the country which carried the policy of import substitution industrialization later than other underdeveloped countries. The economists in Brazil carefully analyzed its effects and were planning the industrial development of the country while the other countries started import substitution mainly by accident. It is important to note that Brazil initially had all the chances for success in the policy of import substitution, since its population goes up to 170 million, which makes Brazil the fifth largest country in the world. Also Brazil is the fifth largest country by its land area. And finally, Brazil is rich in forest reserves, minerals, navigable rivers agricultural land, and hydroelectric capability. The development of Brazilian economy in the period from 1950 to the 1970s confirmed the most optimistic views. Brazil with its rich resources and reserves was called â€Å"the land of the future†. In 1950 Brazil attempted to establish the largest industry of motor vehicle having practically no sufficient basis. Thirty years later aircraft of Brazil were working on commuter airlines on the United States. Brazilian shoes spread everywhere. Moreover, Brazil opened up the richest iron mine in the world and Brazilians found out the capital city on the place where previously had been a roadless jungle and built the network of roads going deep into Amazon. When the oil prices rose and began threatening the development of Brazil economy, Brazilians launched huge hydroelectric projects to operate the growing industries of the Golden Triangle, which included Sao Paulo Rio de Janeiro, and Belo Horizonte and required the new automobiles to run on rum instead of gasoline. At the beginning of the 1980s even pessimists agreed that Brazil was â€Å"the country of future†, however added â€Å"and always will be†. The growth of Brazil stopped, when it was almost close to ripening. The modern cities in Brazil coexist together with miserable shanty-towns surrounded with open sewers. The roads are shared by modern vehicles and hand carts. The wages of Brazilian executives are the highest in the world, but at the same time average workers hardly reach subsistence level. Some economists call Brazil a Switzerland within an India. Other economists consider that the case of Brazil brightly illustrates economic growth without economic development. Economist Celso Furtado characterized the state of Brazilian economy in the following way: â€Å"The Brazilian economy constitutes a very interesting example of how far a country can go in the process of industrialization without abandoning its main features of underdevelopment: great disparity in productivity between urban and rural areas, a large majority of the population living at a physiological subsistence level, increasing masses of unemployed people in the urban zones, etc. † By the 1950s the industrial development by means of import substitution had been already a planned process in Brazil. New industries were protected from the foreign competition with the help of a number of methods. Basic industries (for example, steel, electrical power, petroleum reining) became either fully owned by state or received direct subsidies. Law of Similars aimed at putting high tariffs (sometimes tariffs went up to 300%) on imported goods as soon as any domestic firm somewhere in Brazil started manufacturing something ‘similar’. The industries considered high priority always could be credited under favorable terms by a national development bank. For some period of time, the government even set multiple exchange rates in order to lower the cost of imported capital equipment while the price of imported finished goods was kept expensive. One of the growing Brazilian industries in the mid of twentieth century was motor vehicles. The government hoped that foreign financing would help to expand Brazilian firms which were already producing motor parts, bus bodies, truck and so on and soon would turn them into real vehicle manufacturers. But this approach had to be changed for the government of Brazil faced the reluctance of American government to extend loans and the disapproval of the firms from Europe and the USA who owned a critical technology. The world famous giants Fiat General Motors, Mercedes Volkswagen, and Ford were threatened to lose their markets in Brazil if they did not manufacture vehicles within the country. It is important to note that modern manufacturing, in particular the production of appliances, motor vehicles, TVs and so on is a complex process that requires substantial knowledge and skill. Final assembly became possible in Brazil since it was the last stage of production and required the least skill. So, launching modern industries Brazil could start with final assembly and gradually came to more complicated â€Å"backwards†, which included more difficult procedures. For example, Volkswagen could start importing complete parts, such as engines, wheels etc. and assemble them in Sao Paulo plant. The tariffs allowed Volkswagen to sell 1960 30% Brazilian Beetle for twice what Europeans would pay even if the quality was not that high. Eventually, most of the parts became produced in Brazil and the quality of assembly improved. Gradually, the competition from Brazilian Fiats, Fords, and Chevrolets pushed the price down. In this way, Brazilian motor vehicle industry became more and more efficient and even in the 1970s Brazil exported subassemblies and parts to America and to the European countries. By 1980 Brazil started exporting entire vehicles. When import substitution industrialization was implemented in Latin America, the drawbacks of the policy soon revealed themselves. In Brazil as well as in other Latin America countries import substitution model led to foreign ownership in all the sectors in industry except those occupied by state enterprise. When the interests of foreign firms were threatened by Brazilian taxes, environmental or labor legislation, American, German, Italian, British Japanese or French owners were quick to call on their state departments. In particular, the Department of the United States defined one of its key objects as establishing favorable business climate. This meant undermining Brazilian government. Thus, in 1964 some Brazilian generals, being encouraged by American officials, made an attempt to overthrow constitutional government of their country. Another drawback of import substitution industrialization revealed in the fact that this policy led to huge foreign debts. It was not accidental, that Brazil and Mexico ran into debts in order to cover the expenses of their infrastructure development. The development of infrastructure needs a large number of hard currency imports. If infrastructure grows and increases exports together with hard currency earnings, a country can borrow in dollars. Then, under such condition, the country has to earn dollars in order to make the interest payments. But import substitution requires borrowing in dollars for the purpose of economic development of the domestic production that will not necessarily expand exports. By the end of the seventies the countries of Latin America faced the problem: Where to go next? And the next logical step was to export the goods which had been already produced efficiently. By the middle of the eighties Brazil became the largest exporter of shoes and coffee, among ten major exports to America, six were manufactured projects. Nevertheless, the expansion of manufactured goods made Brazilian economy vulnerable to retaliatory tariffs. Moreover, in the 1980s Brazil as well as other underdeveloped countries of Latin America did not manage to pursue the next layer of import substitution ( in particular, microchips, computers, capital equipment), although they attempted to create open markets for their manufactured consumer goods. Unlike the nations of Latin America, the majority of East Asian nations rejected the policy of import substitution industrialization. Due to this, as many economists think, East Asia had its superior performance in the seventies and the eighties of the twentieth century. Generally speaking, the Asian growth had started before World War II in Japan. The process of Asian growth included three groups of countries whose economic â€Å"miracle† began at different times:

Monday, October 14, 2019

Automatic Fire Alarm System (A-FAS) Design

Automatic Fire Alarm System (A-FAS) Design ABSTRACT The safety of the environment and individuals is monitored and maintained by the important role fire alarm systems play. Although, the usability of many of the existing fire alarm systems is known by the users, however, they are produced with high cost thus not reasonable for the low-income users. The main objective of this project is to design a prototype of an automatic fire alarm system (A-FAS) with low cost. The A-FAS designed in this project contains two systems, the detection system and the alarm system. The detection system operates as the fire detector and consists of a smoke detector, heat detector and an emergency switch as a manual call point. This paper discusses the design and implementation of a microcontroller based fire alarm system. The detectors are placed in different zones and any signal from any detector at any zone will activate the alarm system. The alarm system consists of LEDs, LCD notification, buzzer and text message notifications. Furthermore, the system i s fitted with sensors at different zones to identify the presence of individuals, this feature aids the monitoring process of the system. The entire system is controlled by a microcontroller which is programmed using Arduino compiler. Upon completion of the prototype, the A-FAS detects smoke or any rise in temperature sensed by the detectors. Finally, when any of the sensors are triggered, the buzzer operates and the system sends a text message to the saved number. With the development of A-FAS, the safety of individuals and surroundings will be increased as the low cost of the system will promote users of all income levels to have one at their place or home. INTRODUCTION An overheated electrical appliance, a burning splinter or a burning cigarette or just about any of these can trigger a fire. Moreover, the presence of nylon settings and a sofa set which emanate poisonous gases if on fire, will render people helpless in a couple of minutes, before even realizing what is happening. ADT Security Service and the Chubb Alarm are the well-recognized companies that deal with security systems and have been the innovative leaders in security systems. The products offered by these companies vary from intruder alarms to highly sophisticated fire alarm systems. Furthermore, the systems built by these companies are high in cost and require a scheduled maintenance to be carried out by the companys specified authorities. Based upon the current existing high cost fire alarm systems that are available in the market, an automatic fire alarm system with low cost has been developed. The A-FAS consists of two subsystems; detection system and alarm system. The A-FAS detection system has smoke detecting capabilities as it incorporates an optical smoke detector. Moreover, it is interfaced with heat detector and an emergency switch. The system features counting capabilities based on infrared sensors to ease the determination of individuals in case of emergency. The A-FAS alarm system is associated with the detection system to ease the process of alarming individuals in the event of fire. The alarm system consists of LED and LCD notifications displaying the location of the fire. A buzzer is also incorporated in the system. The system sends text message alerts as it incorporates a GSM module. Finally, the main part of the A-FAS that controls the entire operation is the microcontroller. This thesis describes the design and operation of a microcontroller based fire alarm system that could contribute to saving lives and reduce property losses with low cost. Aim The main purpose of this project is to design and prototype an automatic fire alarm system (A-FAS) with effective and competitive usage and can be produced at a low cost. This system is designed to be easy to operate by any user and is user friendly. The A-FAS is also been designed using minimum hardware at the lower level of processing. The system is not restricted to the mentioned inputs and outputs, however, can be altered per customer needs without having to design a new system. Problem Identification The complexity of the existing fire alarm system in the market nowadays is too high in terms of design and structure. Due to the complexity of the system, regular preventive maintenance is required to be carried out to make sure that the system is operating well. Moreover, the scheduled maintenance adds to the cost of the using the system. Therefore, the proposed fire alarm system is designed with a low cost and can be used by any user for safety purposes. Project Objectives There are several objectives that are required to be accomplished in developing the A-FAS to determine the purpose and the direction of this project. This project aims to achieve the following objectives: To design a low-cost microcontroller based fire alarm system. To develop a prototype of the fire alarm system using smoke detector, heat detector, emergency switch and infrared sensors as inputs to the system. Moreover, using LEDs, LCD display, buzzer and text messages as outputs to the system. To develop a prototype with the capability of customizing the system to meet with the customer requirements with regards to the inputs and outputs, without having to redesign a new system. To develop an automatic fire alarm system to safeguard the user and their surroundings, while being user friendly to accommodate the need of the masses. Project Scope To achieve the above objectives, the project needs to be implemented as below: The heart of the fire alarm system is to be a microcontroller to control the entire operations involved. The fire alarm system is to count the number of individuals present in the locations where the infrared modules are installed. Capable of displaying the source of the alarm on the LCD display. Capable of sending SMS notifications via GSM module interfaced in the system. Project limitation Since the project is interfaced with a GSM module that needs a SIM card to send SMS notifications and thus the system is limited to the amount of credit available on the SIM. Moreover, the system includes infrared sensors that are used to count the number of people entering and exiting the zone and thus to make the system more sensitive and receive only the infrared radiation from the correct source, the infrared modules need to be placed with a minimum distance of 2 meters. Furthermore, to receive live data from the sensors to produce visual output to the user in terms of if any sensor is disconnected from the system, the system is required to have personalized sensors. System Overview Figure 1.1 defines the inputs and outputs interfaced to the microcontroller device. The A-FAS has the features of interfacing additional inputs and outputs based on customer needs. Color Type of sensor Infrared sensors Smoke detector Hear detector Emergency switch The A-FAS works in a loop checking all the input sources and acting accordingly. The smoke detector, hear detector and the emergency switch transmit a signal to the microcontroller once triggered, this notifies the microcontroller to hazard the surroundings via the output devices. A keypad is added in the system to allow the user to interface and monitor the system. The Atmega2560 microcontroller acts as the heart of the Fire Alarm System which controls the entire system. The signals being received from the sensors are being compared by the Atmega2560 to either hazard the surroundings for the existence of fire or to hazard the surroundings for the presence of a fault in the system. Moreover, the system can alert the surroundings via a buzzer and LED notifications as well as SMS notifications once the Atmega2560 microcontroller receives signals that there is fire present in one of the zones. Thesis structure This thesis is divided into six chapters. The first chapter explains the problem statement, objectives, scopes and limitations of the project. The second chapter in this thesis is the projects literature review, which is based on the detection components of the A-FAS, the ATmega2560 and a comparison between microcontrollers and microprocessors. Moreover, this chapter contains summary of several available inventories software available in todays market and previous projects developed by engineers. Furthermore, chapter three describes the phases involved in the development of the A-FAS. There are four phases involved in the production of the fire alarm system which include the research phase, the designing phase, development phase and the analysis phase. Chapter four of this thesis discusses the system design process involved and the hardware and software development. Moreover, chapter five explains the results of the system development of the A-FAS and its analysis based on the system operation and functions. Finally, chapter six concludes the project and the recommendation suggestions for the continuity of the project and future work. The sixth chapter aids to the continuity of the project by other individuals interested as they can refer to it to develop the system. CHAPTER II LITERATURE REVIEW As mentioned earlier in the previous chapter, cost factor plays a very important role in this project. Subsequently, to design a system with the objectives mentioned above requires research and studies that are described in this chapter. This chapter will include three subtopics, previous case study on fire alarm systems, hardware and software studies. Fire Alarm System: Related Work According to Bao Minzhong, Jianmei, Niihau Xiao and Wang [1], the function of the fire alarm system is to detect fire at an early stage providing sufficient time to produce high reliable judgment results. If the fire alarm system nosedives to notify the user in the presence of fire for the user to take appropriate measures, the system fails as alarm systems should cause the operator to respond. Moreover, Brown Campbell [2] suggested that for a system not to fail, it must require positive feedback from the operator. Nur Abd Aziz [3] proposed a fire alarm system consisting of three sensors, thermistor hear sensor, infrared sensors and infrared smoke sensors. The thermistor heat sensor was used to detect the rate at which temperature rises and high temperatures. The infrared sensors were used for intruder alarms to detect the presence or any motion, acting as a burglar alarm system. The infrared smoke sensors were used to identify fire in its early stages or smoldering. In the presence of fire, the water sprinklers are automatically switched on and the burglary alarm is activated. The known catalysts for fire is smoke, flame and heat but only smoke and smoke sensors have been applied and emphasized. Furthermore, when a fire occurs, the highly sensitive motion sensors will respond to normal environmental vibration which could be caused by moving cars or planes overhead. Furthermore, Chew and Ing Ming [4] proposed a similar system consisting of smoke detector, heat detector and a burglar alarm. In the event of smoke or a rise in the temperature, the system sends a signal to the microcontroller which in return operates a buzzer. Moreover, the microcontroller operates an auto redialing telephone programmed with specific number. This system. Moreover, the system is implemented with photo-electric sensor and inductive proximity switches. The photo-electric sensor is activated when transmitter cannot send light to the receiver. The inductive proximity switch is normally used for metal detection and activates when a metal is detected in the system. Once any of the sensors is activated, the microcontroller will sound the buzzer and flash LEDs. Chew and Ing Ming categorized the system proposed for industrial purposed. The complexity of this system contributes to the inability of installing such system at homes or offices. Detection components of the Fire alarm system Sensors are types of transducers that responds to a type of energy by producing another type of energy signal, usually electric [5]. Some of the sensors available include acoustic, biological, chemical and electromagnetic. These are used in many applications and are heavily used in the medicine industry and robotics as a source of detection components. The detection components of the A-FAS consist of smoke sensors, heat sensors and infrared sensors. Smoke Sensors Smoke detectors are devices designed to detect a fire while it is in its early stages or smoldering, duplicating the sense of smell. These devices have gained a wide usage in the residential and life safety applications. There is no debate that smoke detectors is the single most effective method of reducing fire damages and death. 90% to 95% of fire deaths occur in residential buildings (NZFS, 1993), targeting this will help accomplish the most cost-effective results. Studies of various types of smoke detectors, in particular photoelectric and ionization smoke detectors, illustrates that, one type of detector will be expected to perform better than the other, depending on the source of the smoke. Natarianni (1993) concludes that in flaming wood crib fires, the ionization smoke detectors activate before the photoelectric detectors. This conclusion is from simulated fires in hospital patient rooms. However, most importantly, both detectors activated before threatening the patients life. Moreover, a series of full-scale tests of smoke detectors installed in corridors and bedrooms of residential areas was conducted by Kennedy et al (1978). They concluded that inadequate warning in smoldering fires were often produced by ionization detectors. Subsequently, reducing the time available for escape once activated and the escape routes may be smoked-logged. Photoelectric smoke detectors contain a light emitting device, most commonly a light-emitting diode(LED), a smoke chamber and a photosensitive device that produced a monitored current from receiving light directly from the light source. The intensity of tech light reaching the photosensitive device is reduced by the smoke that enters the chamber. A drop in the intensity below a certain level causes a drop in the current produced by the photosensitive device, which is detected by the sensor control circuitry. Dropping the current below a preset threshold results in triggering the smoke alarm. Table 2.1 summarizes the advantages and disadvantages of photoelectric smoke detectors. The complete specification of the smoke detector used in the A-FAS can be obtained in Appendix A. Table 2.1: Advantages disadvantages of photoelectric smoke detector [6]. Advantages Disadvantages Sensitive to visual particles of smoke. Provide early warning. Detects smoldering low heat fires. Detects presence of smoke, not toxicity. Can be installed in any of the following typical locations: Office areas Clean rooms Atriums and corridors Sleeping rooms Storage closets Early contamination by dust causing reduced sensitivity. Must be cleaned on a regular basis. Has a potential for high false alarm rate, however, lower than the ionization smoke detectors. Heat Sensors A heat sensor detects abnormal rate of temperature rise or high temperatures. There are numbers of various heat detectors available in the market, which include: Thermistor. Thermocouple. Resistance temperature device. Diode based temperature sensor. There are certain features to consider while choosing the best heat sensor for any use. These features are summarized in table 2.2. Table 2.2 Features of various heat sensors [7]. Thermocouple RTD THERMISTOR SEMICONDUCTOR High accuracy and repeatability. Fair linearity Poor linearity Linearity: 1oC Accuracy: 1oC Needs cold junction compensation Requires excitation Requires excitation Requires excitation Widest Range: -148oC to +2300 oC Widest Range: -200oC to +850 oC Widest Range: 0 oC to +100 oC Widest Range: -55oC to +150 oC Low voltage output Low cost High sensitivity 10mV/K,20mV/K Typical output The LM35 temperature sensor are precision integrated circuit temperature sensors, which will be used to develop the A-FAS. This sensor is fully rated from -55 Â °C to +150 Â °C and with the linear scale factor of 10mV/Â °C. It operates from 4 to 30 V, has less than 60 ÂÂ µA drain current and has low self-heating (0.08 Â °C in still air). The control circuitry or the interfacing of LM35 is easy due to the low output impedance, linear output and precise inherent calibration. The LM35 series is available in hermetic TO transistor packages, while the LM35C, LM35CA and LM35D are available in TO-92 transistor package. The LM35D is also available in an 8-lead surface-mount small outline package and a plastic TO-220 package. [8] (Reprinted from datasheet of LM35 [8].) The LM35 can function as a basic centigrade temperature sensor sense temperature between +2 oC and +150 oC and can function as a full -range centigrade temperature sensor sensing temperature between -55 oC to +150 oC. Figure 2.1 illustrates the circuitry for using the sensor for both functions, where +Vs is the voltage supplied to the sensor. Adjusting the output voltage of the sensor enables the temperature to be obtained in degree centigrade. Infrared Sensors: There are many sensors available for obstacle detection such as infrared sensors, ultrasonic sensors, camera and laser based sensor system (LIDAR). In this thesis, infrared sensors are used to accomplish the task of counting the numbers of individuals in the placed installed. Low cost with accuracy is one of the main objectives of this project, hence infrared sensors were selected for the design. These sensors are widely used for measuring distances and obstacle detection and have faster response time than ultrasonic sensors [10]. Moreover, power consumption of the infrared sensors is lower than that of ultrasonic sensors [11]. Infrared sensors are categorized as diffuse reflection sensors and retro-reflective sensors. The latter is mainly used in harsh environment conditions and has a larger detection range than the diffuse reflective sensors [12]. Infrared sensors utilize a light sensor to detect a selective light wavelength in the spectrum. When an object obstructs the sensor, the light from the LED is broken by the object and the signal is not received by the receiver. ATmega2560 Microcontroller As defined by James L. Atonakos [13], microcontrollers are souped-up microprocessors with built-in features such as RAM, ROM, A/D, Interval timers and parallel input and output ports. Atmega2560 (figure 2.2), is a powerful flash microcontroller that contains many features in a 100-pin package. The datasheet of the ATmega2560 is attached in Appendix B. The definition of a flash microcontroller is that it can be programmed and erased instantly without the usage of ultra-violet light. The Atmega2560 is an 8-bit microcontroller with a powerful execution of instructions in a single clock cycle leading to the achievement of 1 MIPS per MHz, allowing the designer to optimize power consumption vs processing speed [14]. The internal architecture of the microcontroller is shown in figure 2.3. The central processing unit (CPU) is the brain of the microcontroller that controls the execution of the program, therefore able to access memories, handle interrupts and perform calculations. The microcontroller unit (MCU) consists of 256K bytes of in-system flash, 4K bytes EEPROM and 8K bytes of SRAM, which are used for memory. Other features include [14]: 86 programmable input and output ports. Ultra-low power consumption in active and power down mode. flexible timer/counters with compare modes and internal and external interrupts. Code protection facility, which is one of the best in the industry. Comparison between microcontroller and microprocessor The fact that microcontrollers may have one or two operational codes for moving data from external memory to the CPU, whereas, microprocessors have many operational codes, is the best way to exemplify the contrast between microcontrollers and microprocessors. Microcontrollers have many types of bit handling instructions, however, microprocessors have one or two. In conclusion, the microcontroller is concerned with rapid movement of bits within the chip, whereas, microprocessors are concerned with rapid movement of codes and data from external addresses to the chip. Microcontrollers can function as a computer with the addition of no external digital parts, however, microprocessors must have many digital parts to be operational [15]. OrCAD Figure 2.4 shows the OrCAD software used for circuit designing, testing and circuit analyzing. Generally, OrCAD is a software used to produce printed circuit board (PCB) layouts. The circuit was drawn onto the PCB board using OrCAD Capture, where footprints for each component was researched. The design rule check ensures that there are no errors present in the circuit. Arduino IDE The Arduino IDE (Integrated development environment) is a platform application from ATmega microcontrollers. Figure 2.5 shows the Arduino version used to compiling the program. Arduino IDE is used for writing, debugging, and optimizing ATmega microcontroller applications for firmware product design. Arduino programs are written in C or C++ and the software comes with a library called wiring which makes may common outputs and inputs operations much easier. Fire alarm systems available in the market There are several types of fire alarm system available in the market today. The various fire alarm systems from different developers vary in terms of implementation and functionality. Research has been carried out to investigate the technology and features used to develop each of the systems and compared them with the proposed A-FAS system. Table 2.3 concludes the results on the research, [16] [17]. Table 2.3 Manufacturers products Specifications SECURE 6000 INTELLIGUARD 2900 Developer Chubb Alarm ADT Fire and Security Fire monitoring Available Available Security monitoring system Available Available Service and maintenance Provided Provided Main features Sounding the alarm at first sign of smoke Combination of interior motion, door and window. Controlled via a remote control Plugs into telephone line to provide back to back monitoring system. Connected to signal fire condition to ADT customer monitoring center. Computer assisted reporting. Expandable used microprocessor to offer extensive flexibility. Reduce false alarm since the system can locate the origin of the alarm. Cost $2,055 $1,800 CHAPTER III Methodology This methodology chapter describes the planning and research involved in the development of the entire A-FAS system. The progress of this project was due to the division of the work in four phases; research phase, designing phase, development phase and the analysis phase. Introduction The fire alarm system described in this thesis is divided in to two sections, which are the hardware and the software sections. These sections play a vital role in the effectivity and the functionalities of the system. In order to start developing the project, there are few procedures that must be considered. Thus, earlier planning is important in designing and developing the A-FAS. The related phases have been illustrated in figure 3.1. Research phase The first phase of this methodology deals with the systems literature studies, research and analysis. Problem identification is included in the research phase. Moreover, the system objectives are determined by observations and theoretical information obtained from internet sources, journals, books and magazines. During this phase, the system requirements are determined, which include the hardware and software interfacing. Furthermore, the research and analysis conducted on the existing systems available in todays market is included in the research phase, as well as reviews on previous projects developed by organizations or individuals. A few problems have been identified based on the current research that has been done, which include: Burglar alarms are combined with the fire alarms in the same system, leading to confusion and inability to identify the source of the alarm by the user. The systems available are designed for specific purposes, providing the user with no options of customization of the fire alarm inputs and outputs. The cost of the systems is too high for low income individuals to secure their lives and properties by purchasing one. Websites and documentations were the source of reviews on analysis activities conducted in this phase. The system planning and development scheduling were then determined in this phase which suited the chosen development methodology. Upon completion of this phase, the system scopes, specifications and Gantt chart were produced. Designing Phase The second phase of the system development is the designing phase. The main objective of this phase is to translate or transform the requirements and analysis obtained from the research phase into design specifications for system implementation and construction. This phase involves a vital task for the success of the automatic fire alarm system, which is the hardware design of the system. Designing of the A-FAS hardware system The A-FAS hardware design involves detection components and the microcontroller. The detections components which are the smoke detector, heat detector, infrared sensors and an emergency switch are connected to the microcontroller. The latter is the control unit identifying the source and location of the fire if any of the input detection devices is triggered. A text message will be sent and a buzzer will be activated for individuals to evacuate the premises. Smoke sensors The system has been implanted using a Mercure photoelectric smoke detector. The system has the capability of being interfaced with most of the market available smoke detectors. However, to interface the smoke detector to the microcontroller, the smoke detector circuit is required to be altered. The smoke detector then sends a signal to the microcontroller in the event of emergency. The photoelectric smoke detector used in this project is very effective and highly recommended by users, with a low cost. These devices offer high power dissipation capability and are ideally suited for hostile environments. Heat sensors The LM35 temperature sensor has an output voltage which is linearly proportional to temperature in centigrade, thus the sensor is suitable for the project. The sensor draws very small amount of current which makes it very low self-heating. Figure 3.2 describes th

Sunday, October 13, 2019

Ophelia Essay -- English Literature Essays

Ophelia A play with great value and quality would best describe one of Shakespeare’s intriguing plays, Hamlet. Events, dilemmas, action, and the characters all contribute greatly to make the play interesting and appealing. Every event that occurs leads to the outcome of dilemmas and action. The characters personalities is what makes the action is even more exciting. Each character has got their own special significance in the roles they play. However Ophelia, the daughter of the Lord Chamberlain Polonius, allows an atmosphere of simplicity and delicacy to surround the play. Her simple nature causes inner thoughts that allow us to question her true character. From the start of the play Ophelia seems to always keep her distance and speak very little. She is very distinctive of the other characters and keeps to herself most often. Her first presence in the play takes place when her brother, Laertes, and her father lecture her about keeping away from Hamlet and not believing his love. â€Å"Hold it a fashion, and a toy in blood,† (1.3. 6) this is said by Laertes as he describes that Hamlet’s love will last for a little while then fade, which makes his love insignificant. Ophelia doesn’t argue and agrees to remember what he said, however she immediately tells him to make sure he follows his own advice, â€Å"†¦and recks not his own rede.† (1.3. 51) Having said this by her displays a quality that is not usually seen. In accepting her brother’s advice she also makes sure he understands that he needs to take his own advice too. Generally with Polonius, who also disfavors Hamlet, she is very respectful and obedient. After a long lecture from him too she says â€Å"’tis in my memory locked† (1.3. 86) and â€Å"I shall obey my lord† (1.4. 136). In spite of h er love towards Hamlet she doesn’t debate the fact that he has not allowed her to see Hamlet anymore. She tells him the truth about what Hamlet has said or what she feels. Ophelia is the kind of girl who always had her father or brother telling her what to do and what to think. She says, â€Å"I do not know, my lord, what I should think†(1.3. 104) when her father asks her if she believes Hamlet’s love. Here she seems dubious and uncertain of her feelings or what she is to do. Ophelia is seen as inexperienced and very innocent for she doesn’t look like she understands love or her emotions. Due to her inexperience and lack of g... ...as always confident that he would result with the outcome he wanted. He took advantage of every chance he got. For example the players who performed the play ‘Mouse-trap’. Whereas, Ophelia, unlike Hamlet who ‘acted’ mad, really goes mad and sings her sorrow and mourning through. She doesn’t accept to face reality, for she is now on her own and without her father’s support. This proves that she had always needed someone to tell her what to do and how to feel. And now once her father was gone, there was no one to fill the emptiness she felt. Concluding, Shakespeare’s play, Hamlet, combines a lot of themes and remarkable incidents. Specifically the roles of each character unite to form an extraordinary impression on the play. Particularly, Ophelia’s character is very perceptive and penetrating. She is described as inexperienced, vulnerable, sensitive and very frail. Leading a very protective life doesn’t result in a positive end for her. Her attitude circles the play with a sense of deep warmth and the role she plays helps express the mood of the play. Although very different from Hamlet’s determined character, she has her own urbane manner. Quotes where taken from the play.

Saturday, October 12, 2019

journeyhod Spiritual Journey in Joseph Conrads Heart of Darkness Essa

Spiritual Journey in Heart of Darkness  Ã‚   Heart of Darkness by Joseph Conrad may be a narrative about colonisation, revealing its drawbacks and corruption, but it may also be understood as a journey into the depths of one’s psyche, if taken at a symbolic level. At the beginning of the novel the reader is informed that Marlow is â€Å"not typical†, that he, contrary to stay-at-home-minded seamen, is a â€Å"wanderer†. He has no home, in a psychological sense of the word. He simply â€Å"follows the sea†. This may evoke an interpretation that the man is disturbed, that he attempts to find out about the secrets of his soul, to get to know himself. Since boyhood he had been interested in unexplored lands and especially in a long winding snake-like river with the â€Å"head† in the sea and the â€Å"tail† plunging deeply into the land, which, as Marlow admits, â€Å"charmed† him. This image resembles a map of a journey from the dark lands of the soul, the unconstrained, uncivilised core, which may be called a Freudian Id, towards light, that is Superego. Marlow desires to follow this path in the opposite di...

Friday, October 11, 2019

Outline and Evaluate Research Essay

Many eyewitnesses are called to testify because they have witnessed a crime, accident or incident. The anxiety if this may cause an affect on the reliability of their EWT. There are two main issues in this question: firstly the prediction of the Yerkes Dodson Law that as arousal increases, then so does performance weather spotting, stage performance, or memory encoding, up to an individual optimum level. However, after this optimum level it is suggested that the performance of the individual will decline, this could be triggered by terror. This theory was supported by Deffenbacher et al’s research. The second issue is the â€Å"weapons focus effect†; In Easterbrook’s research he predicted that attention will narrow to the source of the threat e.g the knife the man is holding therefore peripheral detail is lost e.g the details of the perpertrator’s face. This was supported by Loftus’s laboratory studies in an artificial environment using film and sli des, using independent groups design, where a control conditions showed the participants a similar scene without weapons. In the first group they had a scene which they believed to be a real life violent crime involving a weapon, results showed that the participants remembered the knife in great detail but no other features, such as the perpetrator’s face clothing etc. However the participants in the control conditions witnessed the same person but only in a peaceful situation and the participants were able to recognise the man when given 50 photos. When we examine real life eye witness testimony recall however, there is excellent recall of detail, and the weapons-focus effect was not supported. Yullie and Cutshall (1986) conducted a natural experiment on 13 out of 21 bystanders who had witnessed a violent shooting 4-5 months previously. There recall was detailed and accurate and they were resistant to leading questions months after the event. Therefore, this suggest that bystanders had reached the optimum level ( Yerkes Dodson Law) when they they witnessed the death of the robber who had previously wounded the owner in Vancouver gun shop before the owner killed him. Weapon focus did not influence witness recall. Therefore we need to examine witnesses to the violent crime who faced a weapon rather than a bystander to confirm the effect of weapon focus shown by Loftus. The natural experiment conducted by Christanson and Hubinette (1993) in Sweden re-interviewed 58 witnesses (customers and bank tellers) to bank robberies that occurred around Stockholm in one year. Those witnesses who faced the weapon (bank  tellers) they had better recall and accuracy of the event after a period of time rather than the bystanders. Optimum arousal is suggested but weapon focus is challenged. The ecological validity of this evidence is high although the participants cannot be randomly assigned to the experiment and there is no control condition as there would be in a laboratory experiment. However, Laboratory experiments lack the intense arousal of a real crime so the supposed weapons effect may be the effect of distinct and unexpected events distracting participants to the unusual element in the familiar. A strong point of Loftus’s field experiment and supports the weapon focus effect; is that it has ecological validity and comparison to the control condition provide strong support. A criticism is the inability of researchers fro randomly allocate participants in this study to experimental and control conditions to control individual differences.