The History Of The Waterfall Model Information Technology Essay

The History Of The Waterfall Model Information Technology Essay The waterfall model, documented in 1970 by Royce was the first public documented life cycle model. The waterfall model is a popular version of the systems development life cycle model for software engineering. The waterfall model describes a development method that is linear and sequential. Waterfall development has distinct goals for each phase of development. Because the life cycle steps are described in very general terms, the models are adaptable and their implementation details will vary among different organizations. The spiral model is the most general. There is various software development approaches defined and designed which are used during development process of software, these approaches are also referred as Software Development Process Models. Each process model follows a particular life cycle in order to ensure success in process of software development. One such process used in Software Development is The Waterfall Model. Waterfall model was first Process Model to be introduced and followed widely in Software Engineering to ensure success of the project. In The Waterfall model, the whole process of software development is divided into separate process phases. The phases in Waterfall model are: Requirement Specifications phase, Software Design, Implementation and Testing Maintenance. All these phases are cascaded to each other so that second phase is started as and when defined set of goals are achieved for first phase and it is signed off, so the name Waterfall Model. The real flow of waterfall model The stages of The Waterfall Model are: Requirement Analysis Definition: Requirements are set of functionalities and constraints that the end-user (who will be using the system) expects from the system. The requirements are gathered from the end-user by consultation, these requirements are analyzed for their validity and the possibility of incorporating the requirements in the system to be development is also studied. Finally, a Requirement Specification document is created which serves the purpose of guideline for the next phase of the model. System Software Design: Before a starting for actual coding, it is highly important to understand what we are going to create and what it should look like? The requirement specifications from first phase are studied in this phase and system design is prepared. System Design helps in specifying hardware and system requirements and also helps in defining overall system architecture. The system design specifications serve as input for the next phase of the model. Implementation Unit Testing: On receiving system design documents, the work is divided in modules/units and actual coding is started. The system is first developed in small programs called units, which are integrated in the next phase. Each unit is developed and tested for its functionality; this is referred to as Unit Testing. Unit testing mainly verifies if the modules/units meet their specifications. Integration System Testing: As specified above, the system is first divided in units which are developed and tested for their functionalities. These units are integrated into a complete system during Integration phase and tested to check if all modules/units coordinate between each other and the system as a whole behaves as per the specifications. After successfully testing the software, it is delivered to the customer. Operations Maintenance: This phase of The Waterfall Model is virtually never ending phase (Very long). Generally, problems with the system developed (which are not found during the development life cycle) come up after its practical use starts, so the issues related to the system are solved after deployment of the system. Not all the problems come in picture directly but they arise time to time and needs to be solved; hence this process is referred as Maintenance. There are some advantages of the Waterfall Model. The advantage of waterfall development is that it allows for departmentalization and managerial control. A schedule can be set with deadlines for each stage of development and a product can proceed through the development process like a car in a carwash, and theoretically, be delivered on time. Development moves from concept, through design, implementation, testing, installation, troubleshooting, and ends up at operation and maintenance. There are some disadvantages of the Waterfall Model. As it is very important to gather all possible requirements during the requirement gathering and analysis phase in order to properly design the system, not all requirements are received at once, the requirements from customer goes on getting added to the list even after the end of Requirement Gathering and Analysis phase, this affects the system development process and its success in negative aspects. The problems with one phase are never solved completely during that phase and in fact many problems regarding a particular phase arise after the phase is signed off, these results in badly structured system as not all the problems (related to a phase) are solved during the same phase. The project is not partitioned in phases in flexible way. As the requirements of the customer goes on getting added to the list, not all the requirements are fulfilled, this results in development of almost unusable system. These requirements are then met in newer version of the system; this increases the cost of system development.

The Common Traits of Successful Websites Essay -- Sell Websites Buy We

The Common Traits of Successful Websites A website is a new way to communicate without direct personal interaction. It is a place on the internet where one can post anything from personal information to commercial advertising. The major advantage of websites is the fact that they are accessible to anyone in the world. The only restriction is that the person must have a computer and a modem. From that point on, the options are immeasurable. One can read different personal homepages, visit commercial sites and do valuable research. All of these sites can be created by anyone who wishes to take the time to learn the necessary computer language. The creator of any type of website must take into account certain important guidelines in order to create an effective and successful page. The most common type of website is a personal homepage. Homepages make it possible for an internet surfer to learn about someone s/he does not even know. It is almost an invitation to one's personal home without any direct personal contact. All homepages differ greatly in their content. However, they all must have specific, necessary facets in order to be successful websites. Firstly, and most importantly, a homepage must serve a purpose. Whether this purpose is to have fun, to display artwork, or to produce an on-line resume, is irrelevant, as long as the page serves a purpose. I have visited numerous websites, and they all serve some sort of function. Three specific pages to which I will refer are Jeff Seiden's personal homepage, Emily Reith's personal page and Sarah Borcher's homepage. These three pages are all examples which represent different college students. They are of different ages: Jeff, a freshman; Emily, a sophomore; and Sarah, a s... ...commercial, must have are purpose, focus, coherence and links. Without these four necessary factors, it is nearly impossible to have a successful homepage. Works Cited Burgess, John. "Glitch Reveals the Power of the Internet." _The Washington Post_ 31 Jan. 1994, WB17. Donlin, Dennis. "Scaling New Media Mountains". _Advertising Age_ 27 March 1995: 22. Dyer, Gillian. "Advertising As Communication". New York: Routledge, 1982. Holiday Inns, Inc. Homepage Hotchkiss, George Burton, M.A. _An Outline of Advertising_. New York: The Macmilan Company, 1933. "Internet Ads: The Debate Goes On." Advertising Age 2 May 1994: 23. Rotzoll, Kim B., James E. Haefner, and Charles H. Sandage. _Advertising in Contemporary Society_. Cincinnati: South-western Publishing Co., 1990. "Web Sites Top List of Internet Advertisers." _Los Angeles Times_ 11 Dec. 1995, D3.

Nursing Managment Essay

Article Review of â€Å"A Handoff Report Card for General Nursing Orientation This article examines the strengths and weakness of the orientation process of new grads or new nurses to a unit or hospital. By the use of a 100 point score report card containing a summary of the nurses skills, knowledge, and also use of the Benner which measure clinical performance and critical thinking. The article addresses the use of a report card to better communicate the strengths and weakness of the orientees’. This report card is handed off to the next person in whom the new nurses will orient. The handoff is designed to create continuity and accuracy. An example of the type of data that would be measured by the handoff report includes items such as the nurses’ experiences and documentation of strengths and areas that need to be developed or improved. The report card is based on 3 assessments 1. The orientees own self-assessment 2. The instructor’s assessment 3. Competition of competencies From the first day on the unit, the nurse identifies his/her learning type using Benner’s Theory. This provides the nurse with a baseline of where their own individual level of development has reached, as well as, the preceptor, manager, or instructor. Secondly, the instructor assessment measures the orientees’ knowledge and performance. This report card is divided into 4 areas of measurement. The types of areas of measurement are areas such as: nursing interventions, documentation, critical thinking, nursing behaviors, clinical judgment, and several other areas. The last area of measurement is the nurses’ skill level. Several types of competencies were set up to determine if the nurse was competent to function on the unit. In conclusion, the report card was discussed with the leadership team, so that the orientation is more focused on the needs of the oreintee, based on the unit in which the orientee is being trained to work. As I was reading this article, it re minded me of an article that we had read at work. In the American Journal of Critical Care 2009, there was a research study completed to determine the best way to evaluate the new grads, new nurses, and it also evaluated the current nursing staff. In the study, most of the data that was returned was from the new grads. The suspected reasoning was the enthusiasm of the new grads. But the overall outcome, was positive, but mostly helped the management team to better evaluate the competency of their nurses. Currently, in the unit I work in we are challenged with determining the strengths and weakness of our newly hired nurses. Some of the nurses stated that they came to our unit with experience from different venues; however, their level of care has left us with many voids. I personally, enjoyed both articles and the effort of increasing critical thinking and professional behaviors on the clinical floor. Remember we all one day may be patients. Hargraves, L., Nichols, A., Shanks, S., & Halamak, L. (2010). A Handoff Report Card for General Nursing Orientation. The Journal of Nursing Administration, 40(10), 424-431. Kleinpell, R. (2009). Evidenced Based Review Discussion Points. American Journal of Critical care, 18(3), 261-262.

Writing Style in The Awakening Essay - 990 Words

Writing Style in The Awakening In her novel The Awakening, Kate Chopin is an artist who paints a picture for the reader with every word:The sun was low in the west, and the breeze was soft and languorous that came up from the south, charged with the seductive odor of the sea. (12) The inclusion of such alluring and dramatic images allows the reader to see, hear, feel, smell, and live in the scene which she creates. Chopin writes to awaken the senses, and her style is one of beauty and uniqueness. As if stroking a brush across a canvas, or playing a chord on the piano, Chopin’s use of expressive, descriptive, and poignant writing is evident throughout the novel, thus adding to its overall effect. Chopin incorporates a†¦show more content†¦It was a flaming torch that kindled desire. (83) Chopin does not simply write about a small kiss exchanged between Arobin and Edna, she expresses the passion and significance of their moment together as being a flaming torch. She later describes the heartfelt professions of love between Robert and Edna, enthralling the reader’s mind: He kissed her with a degree of passion which had not before entered into his caress, and strained her to him. ‘I love you,’ she whispered. .... Oh! I have suffered, suffered! Now you are here we shall love each other, my Robert. We shall be everything to each other. Nothing else in the world is of any consequence.’ Her seductive voice, together with his great love for her, had enthralled his senses, had deprived him of every impulse but the longing to hold her and keep her. (108-9) Chopin uses powerful adjectives and dynamic images to entice the senses of the reader and enhanc e the effectiveness of the work Chopin beautifies her novel through her many descriptions of scenes and characters: Her beauty was all there, flaming and apparent: the spun-gold hair that comb nor confining pin could restrain; the blue eyes that were like nothing but sapphires; two lips that pouted, that were so red one could only think of cherries or some other delicious crimson fruit in looking at them. (8) Chopin describes Madame Ratignolle using vibrant adjectives and lucid images in order to create a sound picture in the reader’sShow MoreRelatedThe Unique Style Of Kate Chopin s Writing1603 Words   |  7 PagesThe unique style of Kate Chopin’s writing has influenced and paved the way for many female authors. Although not verbally, Kate Chopin aired political and social issues affecting women and challenging the validity of such restrictions through fiction. 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