Tuesday, May 26, 2020

Writing a Thesis Topic

Writing a Thesis TopicThese works of creative writing that students take on during their advanced study and develop them based on the writings of past experts. Not all writers will have the type of experience they need to deliver on such writing, which is why they are required to write thesis essays. Theses are also called dissertations because they are similar to dissertations in other areas of study. So as the name suggests, you will be writing a dissertation.If you are looking to make a mark in a subject that you love and want to have a career objective to pursue, then this type of writing is a necessity. However, if you are a high school student or a college student or even someone that has never been to college, then this type of writing is not an option. That is why theses are not required to be taken in the college or university level.It is also not recommended that you start learning to write thesis essays from the beginning of your studies. You can not have an idea of how to get your work finished in the required time. You will have to gradually learn from there and depending on the topic that you have decided on and the research that you have done already, it may be that your thesis topics will require more than one type of essay. You might also be assigned to write an essay in more than one type of subject.These are the times when you have to keep on learning how to write thesis essays, which can be quite time consuming, and that is why it is imperative that you find some sort of guide or book that will help you to complete the assignment in the required time. There are certain types of thesis topics that you can choose from and once you have a plan on how you want to write the dissertation, it will be easier for you to find the time to do so. For example, you can decide on your career objective and get ready for that, and then find the time to write your thesis.Before you start on your research, it is always better to prepare some sort of outline or plan on how you will conduct your research on the thesis topic. It is important that you have a clear idea of what you want to find out and how you will achieve this, so that you are able to write your thesis essay. This is necessary so that you can achieve the aim and objectives of your research and achieve it at the optimum time. Also, writing your thesis should not be like cramming.There are books that you can buy and read that are written on this subject, but it is not advisable that you start with these books as this would mean that you will be getting stuck at some point. Writing theses will require more than one type of outline, depending on the type of research that you have done on your topic. If you have spent years to research on this topic, then you will have to do research again in a few years to gather more information and details that will help you write an essay on the topic.You can also take help from your family and friends when you are trying to get writing done on a topic that is new to you. This will help you get ideas of how to write your thesis and provide you with tips and tricks to writing a thesis. It is always good to get someone to write a thesis for you if you can not do it by yourself and you want to have a research paper for your dissertation.

Friday, May 15, 2020

Impact of Cell Phone Uasage on Students Acedemic...

IMPACT OF MOBILE PHONE’S USAGE ON STUDENT’S ACADEMIC PERFORMACE, SOCIAL RELATIONSHIP AND SAFETY. INTRODUCTION:- Since the commercialization of cellular phones technology, the use of this communication device has rapidly increased. This technology was first introduced by Motorola in the early 1980’s (Harman, Brittney A., 2011). Today, the global cellular phone market now stands at approximately 1.8 billion subscribers, and is forecasted to reach 3 billion by the end of 2010 (Reid and Reid, 2007). The adoption of mobile phones by young generation has been a global phenomenon in recent years. This cell phone was originally created for adults for business use (Aoki Downes, 2003). It has become an integral part of adolescent’s daily†¦show more content†¦In 2005, the number of mobile phone subscribers worldwide will reach 2 billion (Deloitte Research, 2005) and in Australia will reach 19.2 million (Fisher, 2005). Various surveys worldwide have found high rates of mobile phone use amongst young people. In Norway in 1999, 80% of 13 to 20-year-olds owned a mobile phone, while i n the United Kingdom in 2001, 90% of young people under the age of 16 did so (www.capacitybuilder.co.uk). In 2003, in Italy, 56% of children aged 9 and 10-years-old owned mobile phones and of the 44% who didn’t, all expressed a desire to own one (Guardian Unlimited, 2003), and amongst teenage girls in Tokyo, the adoption rate is almost 100% (Srivastava, 2005). In Australia in 2004, a survey by iTouch found that 50,000 children aged between 5 and 9 years of age owned a mobile phone, one third of children aged 10 to 13-years old and 45% of 13 to 15-year-olds also owned the device (Allison, 2004). Surveys have consistently shown that young people even prefer their mobile phone to television or the Internet (Enpocket, 2005; Hession, 2001). It is children’s favourite method of communication (Livingstone Bober, 2005) with younger adolescents (school years 7 to 9) more attached to their mobile phones than older adolescents (school years 10 to 12) as they reported needing to return home to collect their phone if they forget it (Matthews, 2004). Young

Wednesday, May 6, 2020

Death Of A Salesman By Arthur Miller - 1343 Words

When people think of hauntings, they think of scary ghosts or spirits; things that frighten them or cause them to stay awake at night. Although that is the most common definition for the word â€Å"haunting†, it is not what is always meant by it. A person can also be haunted by memories, things, and people from the past or present. The objective of this analysis is to explain the hauntings of characters from multiple writings, and the consequences that followed. The first character is Willy Loman, in Death of a Salesman by Arthur Miller. Willy is haunted by many people from his past and present that he cannot seem to get out of his head. To begin with, Willy keeps having memories of his brother Ben trying to convince him that he should follow†¦show more content†¦He states, â€Å"Do you know? when he died—and by the way he died the death of a salesman, in his green velvet slippers in the smoker of the New York, New Haven and Hartford, going into Boston— when he died, hundreds of salesmen and buyers were at his funeral† (Miller 1091). Willy would probably not have been so obsessed with succeeding and being the man he used to be if he did not know about David Singleman. David’s story proved to Willy that there is still a chance, since someone has succeeded in what Willy wishes he could have. One of the consequences that Willy faced due to his hauntings was losing his mind. He lost his job because he was unable to focus and became useless to the company he was working for. Another consequence was Willy becoming suicidal. He attempted suicide multiple times, until he eventually succeeded. The consequences Willy faced not only effected him, but also his family. His wife Linda was constantly worried about him before his death, knowing that he was trying to kill himself. She states â€Å"The insurance inspector came. He said that they have evidence. That all these accidents in the last year—weren’t—weren ’t—accidents† (Miller 1081). She was living day by day, hoping he would change his mind about it, but nothing she could do was enough to keep Willy sane and alive. Another haunted character is the woman in The Yellow Wallpaper by Charlotte Gilman. She is haunted by a women she believes is trapped in the wallpaper in the room sheShow MoreRelatedDeath Of A Salesman By Arthur Miller1387 Words   |  6 PagesAmerican play-write Arthur Miller, is undoubtedly Death of a Salesman. Arthur Miller wrote Death of a Salesman in 1949 at the time when America was evolving into an economic powerhouse. Arthur Miller critiques the system of capitalism and he also tells of the reality of the American Dream. Not only does he do these things, but he brings to light the idea of the dysfunctional family. Death of a Salesman is one of America’s saddest tragedies. In Arthur Miller’s, Death of a Salesman, three major eventsRead MoreDeath Of A Salesman By Arthur Miller888 W ords   |  4 PagesDeath of a Salesman† is a play written by Arthur Miller in the year 1949. The play revolves around a desperate salesman, Willy Loman. Loman is delusioned and most of the things he does make him to appear as a man who is living in his own world away from other people. He is disturbed by the fact that he cannot let go his former self. His wife Linda is sad and lonely; his youngest son Biff is presented as a swinger/player while his eldest son Happy appears anti-business and confused by the behaviorRead MoreDeath of Salesman by Arthur Miller972 Words   |  4 PagesIn the play Death of a Salesman by the playwright Arthur Miller, the use of names is significant to the characters themselves. Many playwrights and authors use names in their works to make a connection between the reader and the main idea of their work. Arthur Miller uses names in this play extraordinarily. Not only does Miller use the names to get readers to correlate them with the main idea of the play, but he also uses names to provide some irony to the play. Miller uses the meanings of someRead MoreDeath Of A Salesman By Arthur Miller1573 Words   |  7 Pagesrepresents a character with a tragic flaw leading to his downfall. In addition, in traditional tragedy, the main character falls from high authority and often it is predetermined by fate, while the audience experiences catharsis (Bloom 2). Arthur Miller’s play Death of a Salesman is considered to be a tragedy because this literary work has some of the main characteristics of the tragedy genre. In this play, the main character Willy Loman possesses such traits and behaviors that lead to his downfall, and theRead MoreDeath Of A Salesman By Arthur Miller949 Words   |  4 PagesDeath of a Salesman can be described as modern tragedy portraying the remaining days in the life of Willy Loman. This story is very complex, not only because of it’s use of past and present, but because of Willy’s lies th at have continued to spiral out of control throughout his life. Arthur Miller puts a modern twist on Aristotle’s definition of ancient Greek tragedy when Willy Loman’s life story directly identifies the fatal flaw of the â€Å"American Dream†. Willy Loman’s tragic flaw can be recappedRead MoreThe Death Of A Salesman By Arthur Miller846 Words   |  4 PagesA Dime a Dozen The Death of a Salesman is a tragedy written by playwright Arthur Miller and told in the third person limited view. The play involves four main characters, Biff, Happy, Linda, and Willy Loman, an ordinary family trying to live the American Dream. Throughout the play however, the family begins to show that through their endeavors to live the American Dream, they are only hurting their selves. The play begins by hinting at Willy’s suicidal attempts as the play begins with Linda askingRead MoreDeath Of A Salesman By Arthur Miller Essay2538 Words   |  11 PagesSurname 1 McCain Student’s Name: Instructor’s Name: Course: Date: Death of a Salesman Death of a salesman is a literature play written by American author Arthur Miller. The play was first published in the year 1949 and premiered on Broadway in the same year. Since then, it has had several performances. It has also received a lot of accordances and won numerous awards for its literature merit including the coveted Pulitzer for drama. The play is regarded by many critics as the perfectRead MoreDeath Of A Salesman By Arthur Miller1628 Words   |  7 PagesArthur Miller wrote the Pulitzer Prize winning play Death of a Salesman in 1949. The play inflated the myth of the American Dream of prosperity and recognition, that hard work and integrity brings, but the play compels the world to see the ugly truth that capitalism and the materialistic world distort honesty and moral ethics. The play is a guide toward contemporary themes foreseen of the twentieth century, which are veiled with greed, power, and betrayal. Miller’s influence with the play spreadRead MoreDeath Of Salesman By Arthur Miller1475 Words   |  6 Pagesto death to achieve their so- called American dream. They live alone and there is no love of parents and siblings. They may have not noticed the America dream costs them so much, which will cause a bigger regret later. In the play Death of Salesman, Arthur Miller brings a great story of a man who is at very older age and still works hard to achieve his desire, which is the American dream. Later, he notices that his youth is gone and there is less energy in his body. Willy Loman is a salesman, whoRead MoreDeath Of A Salesman By Arthur Miller2081 Words   |  9 Pages#1 â€Å"Death of a Salesman† by Arthur Miller is a tragedy, this play has only two acts and does not include scenes in the acts. Instead of cutting from scene to scene, there is a description of how the lighting focuses on a different place or time-period, which from there, they continue on in a different setting. The play doesn’t go in chronological order. A lot of the play is present in Willy’s flashbacks or memories of events. This provides an explanation of why the characters are acting a certain

Tuesday, May 5, 2020

Vortex Induce Vibration Essay Sample free essay sample

1. 1. Background of Study Vortex induced gesture ( VIM ) or vortex induced quiver ( VIV ) is an object quiver influenced by the whirl casting. When fluid flow across the blunt organic structure. aftermath formed behind the bluff object and ensuing in whirl sloughing. Due to the long periods of gestures. the whirl induced quiver will normally mention as whirl induced gesture. Vortex-induced gesture is an of import beginning of fatigue harm for blunt cylindrical organic structure underwater particularly for production risers. When the casting frequence matches the organic structure Eigen frequence. the organic structure will get down to vibrate and the body’s motion becomes self-sufficient. Continuing vibrating will take to material fatigue and the stuffs tend to fracture or tire. Vortex casting was one of the causes proposed for the failure of the Tacoma Narrows Bridge in 1940. During the winter of 2001. a bang drive â€Å"Vertigo† in Ohio suffered the whirl casting consequence one of the three towers collapsed. We will write a custom essay sample on Vortex Induce Vibration Essay Sample or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page On 1968. whirl casting due to high air currents caused the prostration of three towers at Ferrybridge power station. Through countless of surveies and researches. several vortex suppression methods developed designed to cut down the effects of whirl induced gesture on blunt organic structure. Normally the fairing is used in cut downing vortex casting consequence for cylindrical organic structure. Fairing will efficaciously cut down the retarding force force and aftermath generated by fluid flow. This research begins with the understanding on rules. parametric quantities and effect of whirl induced gesture ( VIM ) or vortex induced quiver ( VIV ) so follow by carry oning simulation. The analysis is simulated by CFD package which is ANSYS Fluent. The consequences obtained will be compared with the experimental consequences conducted by other research workers. 1. 2. Problem Statement In transporting out the research. several issues need to be clarified:I. The effects of moving ridges and current on Energytwo. The effects of cylinder dimension on VIMthree. The effects fairing on whirl suppressionfour. Any suppression method is more effectual than fairing 1. 3. Objective of Study The aim of survey as follow:I. To look into the influences of moving ridges and current on VIM two. To look into the influences of cylinder dimension on VIM three. To place the effects of fairing on vortex suppression four. To develop an effectual method in vortex suppression 1. 4. Significant of StudyThe of import of this research is to develop an effectual method for vortex suppression. The method will be able to stamp down the whirl casting more efficaciously compare to the other methods. Besides. this method will cut down the retarding force force and lift force generated by the whirl casting. The forces are the chief part to the material break. 1. 5. Scope of Study The Scopess of survey of this research are listed as follows:I. Investigate and understand the basic rules of VIM and VIV on round cylinder two. Analysiss VIM utilizing CFD simulationthree. Develop an effectual whirl suppression method1. 6. Research Flow Chart1. 7. Research Gantt ChartLITERATURE REVIEW ( 1st Draft )2. 1. Introduction Vortex-induced gesture ( VIM ) or vortex-induced quiver ( VIV ) is a phenomenon happens when fluid flow across a cylindrical organic structure. When a fluid flow across a cylindrical organic structure. an unsteady flow with hovering gesture formed behind the organic structure is called casting frequence. This casting frequence will associated with formation of whirls. When the whirls are non formed symmetrically around the organic structure. a clip changing non-uniform force per unit area distribution will bring forth. ensuing lift force moving on each side of organic structure. As the clip changing lift force continues moving on the organic structure. the organic structure will vibrate in inline and transverse to the flow. When the casting frequence is close or equal to the Eigen frequence of the organic structure. resonance occur and the quiver amplitude of the organic structure is maximized. This phenomenon is called lock-in and fatigue tends to go on. 2. 2. Whirls Sheding Formation As the fluid approaches the front side of the tubing. the unstable force per unit area rises from the free watercourse value to the stagnancy point value. The high force per unit area forces the fluid to travel along the tubing surface and boundary beds develop on both sides. The force per unit area force is counteracted by syrupy forces and the fluid can non follow the tubing surface to the rear side but separates from both sides of the tubing and signifier two shear beds. The inmost portion of the shear beds are in contact with the tubing surface and moves slower than the outmost portion. As a consequence. the shear beds roll up. [ 1 ] A whirl is in the procedure of formation near the top of the cylinder surface. Below and to the right of the first whirl is another whirl which was formed and shed a short period before. Thus. the flow procedure in the aftermath of a cylinder or tubing involves the formation and sloughing of whirls alternately from one side and so the other. This phe nomenon is of major importance in technology design because the surrogate formation and sloughing of whirls besides creates jumping forces. which occur more often as the speed of the flow additions. [ 2 ] Figure 2. 1: Vortex formation behind a round cylinder. [ 2 ]2. 3. Reynolds Number dependance By and large the flow form around a round cylinder can be characterized by the Reynolds figure of the incident flow and by the location of points at which the flow separates from the cylinder surface which in bend depend on the province of the boundary bed ( laminar or turbulent ) . [ 3 ] For syrupy fluids the flow form is much more complicated and the balance between inertia forces and syrupy forces is of import. [ 3 ] The comparative importance is expressed by the Reynolds figure Re defined as Re =U?Dinertial effectsviscous effects where U? is the free watercourse speed. D is the tubing diameter and ? the kinematic viscousness of the fluid. Figure 2. 2 shows the chief description of whirl casting from a smooth round cylinder in unvarying flow for the major Reynolds figure governments. Figure 2. 2 Regimes of fluid flow across a smooth tubing. [ 3. 4 ] At Reynolds Numberss below 1. no separation occurs. The form of the streamlines is different from those in an inviscid fluid. The syrupy forces cause the streamlines to travel further apart on the downstream side than on the upstream side of the tubing. [ 1 ] In the Reynolds figure scope of 5 ? Re ? 45. the flow separates from the rear side of the tubing and a symmetric brace of whirls is formed in the close aftermath. [ 1 ] As the Reynolds figure is further increased the aftermath becomes unstable and Vortex Shedding is initiated. At first. one of the two whirls breaks off and so the second is shed because of the nonsymmetrical force per unit area in the aftermath. The intermittently shed whirls form a laminar periodic aftermath of staggered whirls of opposite mark. This phenomenon is frequently called the Karman vortex street. [ 1 ] In the Reynolds figure scope 150 lt ; Re lt ; 300. periodic irregular perturbation s are found in the aftermath. The flow is transitional and bit by bit becomes disruptive as the Reynolds figure is increased. [ 1 ] The Reynolds figure scope 300 lt ; Re lt ; 1. 5 ·105 is called subcritical ( the upper bound is sometimes given as 2 ·105 ) . The laminar boundary bed offprints at about 80 grades downstream of the front stagnancy point and the whirl sloughing is strong and periodic. [ 1. 3 ] With a farther addition of Re. the flow enters the critical government. The laminal boundary bed offprints on the front side of the tubing. forms a separation bubble and subsequently reattaches on the tubing surface. Reattachment is followed by a disruptive boundary bed and the separation point is moved to the rear side. to about 140 grades downstream the front stagnancy point. As an consequence the retarding force coefficient is decreased aggressively. [ 1 ] The scope 1. 5 ·105 Re3. 5 ·106. referred to the literature as the transitional part. includes the critical part ( 1. 5 ·105 Re3. 5 ·105 ) and the supercritical part ( 3. 5 ·105 Re3. 5 ·106 ) . In these parts. the cylinder boundary bed becomes disruptive. the separation points move aft to 140 grades. and the cylinder retarding force coefficient drops suddenly. [ 3 ] La minar separation bubbles and 3-dimensional effects disrupt the regular sloughing procedure and broaden the spectrum of casting frequences for smooth surface cylinders. [ 3. 5 ] In the post-critical Reynolds figure scope ( Re3. 5 ·106 ) . regular whirl sloughing is re-established with a disruptive cylinder boundary bed. The whirl casting persists at Reynolds figure every bit high as 1011. [ 3. 6 ] 2. 4. Strouhal figure dependance When the casting frequence is near the Eigen-frequency of the construction. the resonance will happen and the construction appears to sing. A dimensionless figure. the Strouhal figure Sr. is normally used as a step of the prevailing sloughing frequence degree Fahrenheit. The definition is Sr= fsDU? where D is the diameter of a round cylinder or tubing in cross flow and U? is the free watercourse speed. The Strouhal figure of a stationary tubing or round cylinder is a map of Reynolds figure but less of surface raggedness and free watercourse turbulency as shown in Figure 2. 3. Figure 2. 3: Strouhal figure versus Reynolds figure for round cylinders. [ 4 ] Most of the Strouhal figure informations were derived from the measurings of the speed fluctuations in the aftermath. while fewer informations were derived from the lift force spectra. However. that lift force spectra are a more direct step of the force features than wake speed measurings. [ 3 ] The behaviour of the Strouhal figure is stable for a broad scope of Reynolds Numberss. except around 106 ( transitional part ) where important spread occurs in the trial information. [ 3 ] Whirls are often shed in this part and the Strouhal figure is near to 0. 2. In the transitional part. the Strouhal figure becomes scattered changing from 0. 05-0. 5. Delany A ; Sorensen ( 1953 ) found a sudden addition of their values of Strouhal figure to 0. 45 and so a lessening to 0. 3 at about the same Reynolds figure of 2 ·106. This indicates the passage to postcritical flow conditions. Bearman ( 1969 ) measured a similar value of S=0. 46. [ 3 ] Besides in the transitional scope. Achenbach and Heine cke ( 1981 ) found that smooth stationary cylinders had a helter-skelter. disorganized. high-frequency aftermath and Strouhal figure every bit high as 0. 5. Cylinders with some raggedness ( surface raggedness e/D=3 ·10-3 or greater. where vitamin E is the characteristic surface raggedness ) had organized. periodic aftermaths with Strouhal Numberss S=0. 25. [ 3 ] In the Reynolds figure scope 250 lt ; Re lt ; 2?105 the empirical expression Sr=0. 1981-19. 7Re is sometimes recommended for appraisal of the Strouhal figure. [ 2 ] It has been suggested to present a cosmopolitan Strouhal figure based on the distance between the shear beds. Over a big Reynolds figure scope a Strouhal figure of approximately 0. 2 is so valid regardless of the organic structure geometry. [ 2 ] Vortex casting from a stationary cylinder in the post-critical part does non happen at a individual distinguishable frequence. but instead wanders over a narrow set of frequences and it is non changeless along the span. An mean Strouhal figure value of 0. 25 is suggested. [ 3 ] 2. 5. Reduced Speed Reduced speed is a finding of the speed ranges where the whirl casting will be in resonance with Eigen frequence of the object. VR=U?fiD where U? free watercourse speed. fi is the ith natural frequence of the member and D is member diameter. For low decreased speeds. there exists on initial subdivision associated with a 2S whirl casting manner ( two individual whirls shed per rhythm ) and the agencies forces and cylinder response are in stage. For intermediate and larger reduced speeds there exists an upper and a lower subdivision associated with a 2P whirl casting manner ( two braces of whirls per rhythm ) . [ 7 ] Figure 2. 4: Sketch of the â€Å"three-branch† response theoretical accountHowever. really few 3-dimensional numerical consequences have been able to accurately reproduce the three-branch response theoretical account obtained from experiments. Some have successfully predicted the 2P casting manner in the lower subdivision [ 8 ] . but this consequence has merely been observed at big mass-damping parametric quantities. little facet ratio and moderate Reynolds figure. In general. the undertaking of capturing numerically the big amplitude response of the upper subdivision for low mass-damping systems with big facet ratio has remained out of range. [ 7 ] 2. 6. Raise CoefficientLift force is sinusoidal constituent and residuary force. Parameter of lift force usually is used to find the lift coefficient. CL. CL= FL12?DLV2 where FL is the time-average of the retarding force force. FL ( T ) . ? is the unstable mass denseness. D is the cylinder diameter. L is the cylinder length and V is the flow speed. Lift is the cross constituent of force happening at the whirl casting frequence. Lift will be influenced by organic structure gesture. and there is considerable grounds showing the influence of organic structure on lift force frequence and correlativity. But it is an applied force which owes its being to the character and strength of the hydrodynamic aftermath formed by flow around the organic structure. [ 3 ] Lift force besides can be expressed in the signifier of gesture as equation stated below FL=m+az+2mzz+Kz where ? is the muffling factor of the cylinder. ?z is the cylinder round natural frequence and K is the spring invariable. The clip changing lift force on the hovering cylinder may hold a stage. ? difference. Then raising amplitude will go. z=Azsin? ( 2?fst+? ) where Az is maximal gesture amplitude.Refering the fluid kineticss portion of the job the Reynolds figure Re can play an of import function here because flow separations are frequently Reynolds figure dependant. even if the organic structures have crisp borders. This has already been observed and explained for the attack span cross subdivision of the Great Belt Bridge ( Schewe A ; Larsen 1998 ) . High Reynolds figure dependance is observed from numberless of experiments and researches. The ground for this dependance is that. the province of the boundary bed has a far-reaching influence on the full flow field about a organic structure. Both the province of the boundary bed and the location of passage are frequently responsible for the formation. length. and form of separation bubbles. [ 9 ] In peculiar when the symmetricalness is broken. i. e. the cross subdivision is asymmetric or the angle of incidence ? is non zero. the behaviour of the separated flow that depends on the Reynolds figure can be different on the upper- and the lower side of the subdivision. Therefore planetary values. like the lift coefficient CL. for illustration. can be affected by the Reynolds figure. This in bend can hold a big influence on the derived functions. which are differential values and therefore sensitive to little fluctuation of the implicit in CL ( ? ) curve. the latter are. in add-on. typically nonlinear in instance of bluff organic structures. In general the derived functions and the nonlinearities are finding the type and strength of possible flow induced quivers. [ 9 ] Over countless experiments and researches. a big figure of consequences had been published to try the relationship between the lift coefficient and Reynolds figure.