Computer Based Systems Essays - Systems Analysis, Diagrams

Computer Based Systems The system Development Cycle What is it? The system development cycle is a method used to create a system where none has existed before and/or modify an existing system. It is sometimes simply called System Development. It involves a number of stages representing a standard strategy for taking a problem from start to finish. Two approaches: 1. Conservative-working systematically through the steps. 2. Radical-Cycling through the cycle several times until the final result is achieved. The Steps The above diagram shows that the system development cycle is represented by 5 broad stages: -Requirements Definition. -Analysis. -Design. -Implementation. -Operation and Evaluation. Requirements Definition Also known as: Requirements analysis or.Feasibility study. -Duration is relatively short compared to the rest of the development cycle. -It is important to get it right the first time else mistakes could be costly. In the worst case a large oversight would require starting over from step one. Aim The aim of this stage is to see how the present system functions and to identify the nature of the problem (problem definition). once the problem has been identified a report is compiled called a feasibility report. that report contains - (1) Objectives of the initial study (e.g. why a mail order firm takes longer than a week to dispatch orders). (2) depth of the initial study (e.g. Were interviews conducted with staff involved). (3) recommendations including an outline of the proposed development (e.g. redesign current computer system). After studying the report management have three options - (a) get a second opinion (b) do nothing (c) follow recommendations. If the investigation confirms that there is a problem further work and study may be needed. Analysis Aim The aim of the analysis stage is to answer the questions who, what, when, why. The three main processes in system analysis are (1) Data gathering, (2) Detailed analysis, (3) Report on the above findings. Data gathering What tasks are occurring, who is performing them, when are the tasks being performed. A range if methods can be used to gather data including (1) Study current documentation. (2) Interview (3) Questionnaires (4) Observation. Questionnaires usually involve closed or open style questions. Questionnaires Closed questions limit responses e.g. tick a box, yes/no, multiple choice. Open questions allow free written response. Observations This involves a system analyst visiting the organization to view current procedures, channels of communication and the flow of data through the organization. Detailed analysis at this stage data is collated , organized and analyzed. At this stage the system analyst may have an idea as to the solution of the problem. A range of tools may be used to assist in the analyst process :- (1) organizational charts (2) Statistical graphs or charts (3) data flow diagrams (4) Flowcharts (5) Data dictionaries (6) decision trees (7) Gantt chart Organization Charts - Illustrates the structure of the organization pictorially and shows how responsibilities are allocated within the organization. Exercise: Create an organization chart for either - (1) The school (2) Some other organization you know. Statistical graphs Graphs such as a pie or bar chart are particularly useful in reporting the results of closed questions. A Pie chart is much easier to interpret than a set of numbers. Data Flow Diagrams -Illustrates the movement of data through a system e.g. Flowcharts -Similar to algorithms -It is an accepted convention that flowcharts should fit on a single page. If it doesn't it is divided into smaller modules (Stepwise Refinement.) Data Dictionaries A data dictionary is a catalogue or listening of data items used within the information system. It is used to manage information resources and is particularly useful when working with databases e.g. Decision tree table Grannt charts A grannt chart is used to illustrate the time line for the actual system developement process. Dates for specific stages are set and these are used to control the development process. Analysis Analysis examines the areas of input processing and output Input Method used to gather input: (1) frequency (2) quantity (3) accuracy (4) cost (5) who is involved? Processing (1) how data is processed (2) processing speed (3) frequency (4) quantity (5) accuracy (6) cost (7) who is involved Output Availability of output Analysis report This report should include: (1) statement of the problem. (2) summary of current procedures used by the firm. (3) summary of current problems. (4) problems solution including feasibility, requirements, cost and the effect on people involved. (5) a general specification and preliminary suggestion for a problem solution. Once again management may choose to get a second opinion

Definition and Examples of an Antonym in English

Definition and Examples of an Antonym in English An antonym is a word having a meaning opposite to that of another word, such as hot and cold, short and tall. An antonym is the antonym of synonym. Adjective: antonymous. Another word for antonym is counterterm. Antonymy is the sense relation that exists between words which are opposite in meaning. Edward Finnegan defines antonymy as a binary relationship between terms with complementary meanings. Its sometimes said that antonymy occurs most often among adjectives, but  as Steven Jones et al. point out, its more accurate to say that antonym relations are more central to the adjective classes than to other classes. Nouns can be antonyms (for example, courage and cowardice), as can verbs (arrive and depart), adverbs (carefully and carelessly), and even prepositions (above and below).   Examples and Observations You forget what you want to remember and you remember what you want to forget.Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead and that I must exert myself in order to give in the same measure as I have received and am still receiving.Opposition and ParallelismFactors that contribute to particularly good antonym pairings may relate to more than just the two items semantic oppositeness; for instance, the pairing of increase and decrease is supported by their rhyme and the perception of a parallel morphology, as well as their semantic opposition.Three Types of AntonymsLinguists identify three types of antonymy: (1) Gradable antonyms, which operate on a continuum: (very) big, (very) small. Such pairs often occur in binomial phrases with and: (blow) hot and cold, (search) high and low. (2) Complementary antonyms, which express an either/or relationship: dead or alive, male or female. (3) Converse or relational antonyms, expressi ng reciprocity: borrow or lend, buy or sell, wife or husband. The Lighter Side of AntonymsA man in the Land of the Houyhnhnms,Had a large collection of antonyms;He would say, This is great!Theyre in pairs, so they mate,Unlike synonyms, and, of course, homonyms.(W. S. Brownlee) Pronunciation AN-ti-nim Source: Tom McArthur, Antonym. The Oxford Companion to the English Language. Oxford Univ. Press, 1992. Steven Jones et al.,  Antonyms in English: Construals, Constructions, and Canonicity. Cambridge University Press, 2012. Albert Einstein, The World As I See It, 1931. Cormac McCarthy, The Road. Knopf, 2006.

Perception of China as a Tourist Country Dissertation

Perception of China as a Tourist Country - Dissertation Example The research identified that Western tourists considered China as an economical place for tourism and the main problems encountered were lack of professionalism by the hotels’ employees, unavailability of Western food and insufficient facilities for Western tourists. Hence, it is recommended that the tourism authorities of China start revamping the image of China by doing marketing activities that will attract the tourists to the country and bringing desired changes in their tourism and hospitality industries. I am pleased to submit my dissertation on â€Å"Perception of China as a tourist country: Western tourists’ point of view†. During this phase of collection of data, its analysis, writing and designing the report, I have gained very useful knowledge and experience of writing an analysis. In addition, it helped join all my skills and abilities to produce the best report. I would like to offer my appreciation to respondents who took out time for filling the questionnaires and providing me the most valuable information. Furthermore, I would like to thank University of Bedfordshire for providing me this opportunity to work on such a report where I utilized my skills and learnt all the necessary theory related to my topic. And most of all we would like to thank University of Bedfordshire for providing me the access to digital library which gave us reliable and meaningful data. In the end, I would like to express my gratitude to my advisor, MR/MS., without his help and guidance, it was not possible to accomplish and complete the report. He provided me with the necessary teachings that really facilitated me during the writing of this report. The tourism industry is one of the fastest growing industries across the worldwide and it is one of the highly contributing industries in the country’s economic growth.

Leading Retailer Case Study Example | Topics and Well Written Essays - 1750 words

Leading Retailer - Case Study Example The main aim of the company is to help people save money to help live better. The growth of the company over the years has been immense. The company pays a lot of attentions to the needs of the stakeholders and helps provide the stakeholders with the desired results. The biggest retailer in the world with over 971 discount stores, 2447 super centres, 132 neighborhood markets, and 591 Sam's clubs in the US, Wal - Mart has been able to very smoothly make its way to the top of the retailing industry. The company is spread over the 14 countries and employees almost over 2.1 million people. The company has made enormous revenue of over $378,799 million for the year - end January 2008. Being the largest retailer in the world, Wal - Mart is faced with a lot of competition and making all the happenings, issues, events etc of Wal -Mart always in the limelight (Money Central, 2008). The company works on the basic values which mainly revolve around the respect for individuals, service to customers and striving for excellence. The management of the company is said to be very efficient and the managers are known to be work by the values of the firm. However the company still faces a number of issues pertaining it employees, each of whom are known as associates in the company. The vision of the company is to become the leaders of the retail industry. This however can only be achieved by ensuring that the customers receive what they desire out of the company. The mission of the company highlights their constant need to improve the services provided to exceed customer expectations and to provide customers with reasonably priced goods of great quality. The company's basic va lues of respect for individuals, service to customers and striving for excellence speaks for itself. Wal - Mart has tried to ensure it reaches out to the majority of the American population and the major customer groups accounting to almost 23 percent belong to families where the annual income is lesser than $25,000. It was also noted that almost half of the customers of the superstore are blue-collar workers and most of the families are either unemployed or elderly (Featherstone, 2005). The Issues: Wal - Mart in some recent reports has been accused of not treating their employees fairly and making the employees work over the shift hours. The company has also been accused for paying the employees much lower than what they should receive. According to a number of reports the employees have actually disclosed the fact that they receive pays which are way below the minimum level of pay that has to be given to the employees. The company claims to give importance to the employee's growth and careers. The company's website claims to provide the employees with a competitive pay, skills development and health benefits for the employee and family. However a recent article in Business Week highlighted the fact that the company has been paying employees about $8.23 per hour, or $13,861 a year. This pay is well below the federal poverty line of $14, 630 for a family of three. Other

Dance Review Essay Example for Free

Dance Review Essay The performance, â€Å"Dance Matters† was absolutely amazing. Walking into the theater I wasn’t quite sure of what to expect and was really excited to see the show. I got even more excited seeing that this performance was directed by my professor. There were four parts in the performance. Also, each of them had its own story and full of meaning. I was surprised and learned from the performance. I appreciated to have a chance seeing this amazing show. There was one part of the performance that attracted me a lot. When the curtain was rose, I saw dancers sitting on the chairs with their hands covering their faces expect the girl who was expressing herself. The voice was strong and full of passion which grabbed my full of attention. Through her strong beautiful voice, I felt her. She had so many stories to tell. Moreover, the strong feeling was turned into the movements. All dancers started moving their bodies with energies. All of their extensions and turns and leaps were perfect and they were all in sync. I noticed one thing that we learned in class, they constantly kept their bodies flowing and moving. Every movement connected to another one. Everyone danced to their full potential, there was no lagging from the dancers. I was very impressed and enjoy watching this performance. It was perfect that all the dancers were full of energies and every movement was perfectly presented. Generally, it was an amazing performance. Somehow, â€Å"Fragmented† was my favorite part in this performance.

Essay --

Hopelessness is an intense emotion every person feels at one point in their life, a feeling closely interlinked with depression and suicide. In the poems â€Å"It was not Death, for I stood up,† and â€Å"I felt a Funeral, in my Brain,† by Emily Dickinson and â€Å"No worst, there is none. Pitched past pitch of grief,† by Gerard Manley Hopkins, the theme of the poems is hopelessness, but the authors approach the theme differently in each poem. In the poem, â€Å"It was not Death, for I stood up,† Dickinson uses words to describe the sense of hopelessness she feels as she tries to pinpoint the source of her anguish. In the first two stanzas, she uses specific sensory details to convey her chaotic feelings to tell the reader what her condition cannot be. A repetition of â€Å"it was not† (1) is then followed by a reason of why she eliminated the possibility, using the senses of sound or touch. She merges together the conditions she had eradicated and through her chaotic state, her thoughts turn toward funerals. This causes her to think about her death and her current state of mind. She feels her â€Å"life were shaven† (13), so that the only emotions left were despair and terror with the feeling of hope lost. She also â€Å"could not breathe without a key† (15); terror does not directly affect a person’s breathing, but it sometimes causes a person to feel as if he were suffocating, unable t o breathe. Her â€Å"key† that she needs is to understand what she is feeling, but she cannot figure it out (15). The last stanza in the poem expresses an overwhelming feeling of bleakness, there is no opportunity for rescue, â€Å"like Chaos— Stopless— †¦ / Without a Chance†¦ / Or even a Report of Land—† (21-23). In the last line, there is a paradox, that since there was no possibility of hop... ...er already confused and chaotic mind, her thought process leads her to thinking about death and hopelessness of being healed. Hopkins’s poem starts out differently, with him thinking that there was nothing that could be worse than what he was going through, but in the process of searching for relief, he discovers there is no relief with death. His poem comes to the same conclusion as Dickinson’s, the hopelessness of having no cure to save them. The ending to Dickinson’s second poem is similar to this that after her descent into insanity, there is no hope for her of ever going back to reality. In these three poems, imagery plays a large part with helping the author describe their thoughts and situations, which increases the feeling the reader has because it seems more lifelike. The three poems begin at various places, but end with the revolving theme of hopelessness.

Lifespan Perspective Paper

Lifespan Perspective Paper Introduction This paper will discuss lifespan development and the theories associated with the study. Humans develop according to phases throughout their lives and this paper will address these phases and what to expect and when. People learn from mistakes made in the past and apply these lessons in order to improve their quality of life. The psychodynamic and evolutionary theories will be examined in detail. Also, the significant role of nature and nurture will be addressed.Lifespan Perspective of Development Lifespan development describes the growth that happens from the time an organism is conceived to the time of its death. A human undergoes a variety of changes throughout their lifetime: psychologically, physiologically, spiritually, and socially changes all occur. A mere fetus develops heart beat at around six weeks and from that point on, develops quickly over the remainder of the pregnancy. Each step in life people develop, little by little.Lifespan development provides us with the information necessary to understand the different phases of human life and with this information we are able to better understand what to expect from each phase (Berk, 2012). For example, children often fear the dark and require a night light to sleep, but overtime, this insignificant fear becomes less and less of a concern and eventually most children are able to sleep just fine without a night light. When a child realizes there is nothing to be afraid of, like there are not any monsters under the bed, he or she is able to sleep without the security of a night light.Understanding lifespan development is crucial and allows us to grasp the phases of life. And also, understand children and their needs for security and comfort. Young children often relay on the comfort of a pacifier or a blanket to calm them down or make them feel safe. Parents are able to understand their children and their needs with the help of lifespan development studies and thus, parents feel like they are able to be better mothers and fathers. There are four recognized phases of human lifespan. One, childhood and adolescence; two, early adulthood; three, middle adulthood; four, late adulthood.Natural progressions are expected to occur as a person ages. The study of lifespan development is important because it explains how and why people develop and what reasonable expectations should apply during this process (Berger, 2008). Lifespan Development at Work The study of lifespan development is significant factor in understanding the subject and provides people with many answers and has the ability of preventing people from repeating past mistakes. Over the years humans have monitored history and have used their research to prevent making similar decisions of the past that did not work out like they were intended to (Carson, 2000).For example, sunscreen is used to protect our skin from harmful UVA and UVB rays and ultimately, decrease the possibilities of skin cancer. Before the importance and knowledge of sunscreen was available people did not know the true dangers the sun presented and mostly did not protect their skin accordingly. As a result, many people who spent a lot of time outdoors in the 1970’s and 1980’s had a significantly increased rate of skin cancer. Many of these skin cancer victims did not know the dangers the sun presented and how wearing sunscreen could have decreased their risk.If this knowledge was readily available at the time it is almost guaranteed that a large percentage of these people who have worn sunscreen and possibly eliminate their chances of skin cancer all together. Now the threats of sun damage are widely known and discussed and there are a variety of sunscreen-type products on the market for consumers (Berk, 2012). People have learned from past mistakes that the sun does present dangers and can be harmful to our skin so it is important to wear sunscreen and take other appropriate precautio ns.Lifespan development is purposed partially on extending the life of man and as a part of that jaunting task, survival is required. Humans learn from mistakes that have been made in the past, as a part of their challenge to survive. Skin cancer kills some of its victims and therefore, the knowledge that skin cancer presents is crucial and allows people to take the appropriate measures to cut down their risks. This is one simple example of how people learn from history and use inventive ways to improve the future with the information acquired (Carson, 2000).Theories of Lifespan Development: Psychodynamic Behavioral, cognitive, contextual, evolutionary, humanistic, and psychodynamic are the six widely accepted theories pertaining to lifespan development psychology (Berger, 2008). Both Eric Erickson and Sigmund Freud did expansive studies on the psychodynamic theory. In Freud’s studies he focused on the inner being of a person and the unconscious forces that create personality and behavioral traits. His beliefs are that events, like memories and feelings that occur inside of us help motivate our personality and the way in which we behave.Memories are usually positive or negative and conflicts arise from negative memories and thus, creating a feeling that something should not be repeated in order to avoid a negative outcome. The psychodynamic theory focuses on three aspects of human personality: ego, superego, and id. Along with personality, this theory focuses on psychosexual development as well (Carson, 2000). Theories of Lifespan Development: Evolutionary The Evolutionary Theory of lifespan development is another interesting take on the study originally theorized by Charles Darwin and Konrad Lorenz.This theory focuses on evolution and how it specifically relates to human lifespan development. Over the years, a process of natural selection takes place and as a result humans adapt to their environments. Traits are acquired and sometimes altered by specie s in order to thrive. Darwin and Lorenz focus on how heredity influences development and how behavior is a result of our genetic inheritance. Studies that are connected with this theory show a relationship between family members and certain diseases and illnesses (Berk, 2012). For example, mental illness often runs in family histories and can be tracked through heredity.Heredity and the Environment Nurture versus nature is a discussion commonly associated with lifespan development. Environmental factors play a role in how a person develops, but heredity is passed down through a process of inheritance. A child may be born into a poverty-stricken home and raised to live in fear. A socioeconomic situation like this can lead to a life of crime in order to make ends meet. This environment has significant affects on the development of a person, but environments can be changed, if a person is willing to take the necessary steps.Now if a child is born into a family with a history of mental illness the child has a chance of developing a related illness (Berger, 2008). For example, if the child’s mother has schizophrenia and the child demonstrates symptoms of the disease at an early age and eventually is diagnosed with the disease, this is an act of nature. It is possible to earn a degree, get a better job, and move up to a middle class area, but it is not possible to undo heredity and no longer be schizophrenic. Nature and nurture both play a significant role in lifespan development and have equal importance in the lives of people (Carson, 2000).Conclusion In conclusion, lifespan development describes the growth that happens from the time an organism is conceived to the time of its death. Throughout these years, people develop in phases that can be observed as a result of the study of lifespan development (Berger, 2008). Human beings have learned about the different phases of development and have discovered new ways to do things to guarantee a higher quality of life. Watching history and mistakes that were made in the past are one of the ways the human species thrives and is able to withstand the test of time (Carson, 2000).The psychodynamic and evolutionary theories explain specific thoughts associated with lifespan development (Berk, 2012). Nature versus nurture is controversial debate that can be seen all throughout the study of psychology and many characteristics humans develop References: Berger, K. S. (2008). The developing person through the life span (7th ed. ). New York, NY: Worth  Ã‚   Publishers. Berk, L. E. (2012). Infants and children: Prenatal through middle childhood (7 ed. ). Allyn & Bacon. Carson, R. C. (2000). Abnormal Psychology and Modern Life. Retrieved June 25, 2012, from,http://www. abacon. com, p85.