Is Software Engineering A Multi Disciplinary Field

ABSTRACT Using qualitative methods and a qualitative analytical framework, it was found that communication and cooperation are the critical factors in developing large-scale software systems. Given the importance of this observation, it is perhaps surprising that research publications using qualitative methods are still scarce. Therefore, my goal in creating this paper is to make existing qualitative methods more visible and further the understanding of qualitative research and its importance in the software engineering community. This paper presents several qualitative methods for data collection and analysis and describes them in terms of how they might be incorporated into empirical studies of software engineering, in particular how†¦show more content†¦For various reasons, systematic empirical studies employing strictly scientific methods are hardly practiced in software engineering. Thus there is an unquestioned need for developing improved and better-qualified empirical methods , for their application in practice and for dissemination of the results. e.g., for planning, performing, analyzing, and reporting such studies. A range of research approaches can generate different and richer information about a complex phenomenon such as software development. In particular, qualitative research methods have been advocated in this regard, although they still occupy a relatively marginal position in software engineering research compared to quantitative methods. The reason that qualitative methods are used so infrequently in software engineering lies in its foundations as a scientific and engineering discipline. An inherited technical interest in improving practice is associated with a preference for quantitative research approaches that lend themselves to measuring causal relationships for successful software process improvement. However, studying software engineering is a complex undertaking not just because of its technical aspects, but also â€Å"from the awkward intersection of machine and human capabilities, and from the central role of human behavior in software development† (Seaman 1999, p.557).

Essay On Nuclear Submarines Example For Students

Essay On Nuclear Submarines The Evolution of the Sumarine Due to WarThe submarine is an extreamly useful tactical tool. Bred through war, the submarine is one of the most advanced covert weapons technologies today. The submarine is a ship designed and built to travel under water. A true submarine spends the majority of time under water and is capable of staying under water indefinaltely(Rush 140). The only true submarine today is the nuclear sub. The first true submarine is the U.S.S nautilus(Rush 141). There are two main types of war affiliated submarines, attack submarines and ballistic missile submarines. The attack submarine is designed to seek and destroy enemy submarines and surface ships. The much larger ballistic missile submarine is designed to carry multiple warheads to attack enemy cities and military facilities ashore(Polmar 748). The submarine origionated over 2,000 years ago when Alexander the great went below the Mediteranian Sea in a glass barrel(Wyckoff 13). Submarines were toyed with by scientists through the years but not many uses were found for the concept of a submersable until the revolutionary war. The first attack submarine was the Turtle, designed by a student at Yale university by the name of David Bushnell, its purpose was to sink a British war ship in New York Harbor(Polmar 750). Its mission was a failure but none the less was the first attempt to sink a ship with a submersable(Polmar 750). The first success was made durring the Civil War(Polmar 750). The Confederate sub Hunley rammed the Union ship Housatonic in Charleston Harbor, and both the Hunley and the Housatonic sank(Polmar 750). The Hunleys weapon consisted of an explosive at the end of a long pole wich was to be set off when in close enough proximity to the ship it was to attack(Polmar 750). The submarine has advanced dramaticly due to war. The first major advancement in submarine technology is the invention of a gasoline and batery powered submarine by John P. Holland(Polmar 750). This ship was bought by the US Navy in 1900 and named the U.S.S Holland(Polmar 750). The U.S.S Holland was capable of speeds of 6 knots submerged(Polmar 750). The gasoline and battery powered combination allowed for submarines to run on gasoline while surfaced, and by battery power when submerged and combustion was no longer possable without wasting valuable oxogen within the submarine. The next leap in the technological development of the submarine was the periscope developed by Simon Lake in 1902(Polmar 750). The periscope allowed a submarine to site distant targets by use of a magnifying lense. A few years later the diesel and battery powered submarine was developed in Great Brittan(Polmar 751). The diesel submarine was cheeper to operate, more powerful, and produced less dangerous fumes th an gasoline powered submarines. The majority of submarines were diesel until the next revolution in submarine technology, the nuclear powered submarine. Although submarines were used extensivey durring WWI and WWII, the greatest advances were made to submarine technology,as well as other technologies due to the submarine, during WWII. The submarine was used extensively by the german military durring both WWI and WWII, and became a major threat to enemy millitary, as well as merchant, ships. This increased the rate at wich technology was developed both to aid and to destroy the submarine. An example of an advancement in technology, related to the submarine, is that of a device employed by the German military, for German submarines, or U-boats (Unterseebooten), is the snorkel(Botting 161). The idea of a snorkel had been around for quite some time however was not well devoloped until the Germans took intrest(Botting 161). The snorkel allowed for submarines to run their engines while submerged. Until the germans modified it, the snorkel was little more than a hose kept out of the water by a float(Botting 161). The germans perfected the s norkel by using a rigid telocopic pipe rather than a flexable hose and by using a float on the inlet so that if the U-Boat dipped too far under water, it would close the inlet preventing the water form entering the combustion engine(Botting 161). Two technologies wich were developed because of the threat by German U-boats are radar, allready in use by the allies to search for and track airplanes, and sonar, a new technology. To counter allied radar the Germans placed a rubber mesh acrost their snorkels to make detection more difficult(Rush 50). .u55b34566df9bdfb39612d3e314147f93 , .u55b34566df9bdfb39612d3e314147f93 .postImageUrl , .u55b34566df9bdfb39612d3e314147f93 .centered-text-area { min-height: 80px; position: relative; } .u55b34566df9bdfb39612d3e314147f93 , .u55b34566df9bdfb39612d3e314147f93:hover , .u55b34566df9bdfb39612d3e314147f93:visited , .u55b34566df9bdfb39612d3e314147f93:active { border:0!important; } .u55b34566df9bdfb39612d3e314147f93 .clearfix:after { content: ""; display: table; clear: both; } .u55b34566df9bdfb39612d3e314147f93 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u55b34566df9bdfb39612d3e314147f93:active , .u55b34566df9bdfb39612d3e314147f93:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u55b34566df9bdfb39612d3e314147f93 .centered-text-area { width: 100%; position: relative ; } .u55b34566df9bdfb39612d3e314147f93 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u55b34566df9bdfb39612d3e314147f93 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u55b34566df9bdfb39612d3e314147f93 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u55b34566df9bdfb39612d3e314147f93:hover .ctaButton { background-color: #34495E!important; } .u55b34566df9bdfb39612d3e314147f93 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u55b34566df9bdfb39612d3e314147f93 .u55b34566df9bdfb39612d3e314147f93-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u55b34566df9bdfb39612d3e314147f93:after { content: ""; display: block; clear: both; } READ: Path To Power EssayDue to submarines, some of the most incredable advanses in millitarty technology have been made. Invoked by necesity and the desire to conquer these technologies advenced at extreemy fast paces. From offence to deffence to the insurance of covert operation submarine advancements only slowed in times of peace. Many of these technologies, such as sonar, have found there ways to research ocupations. One questoins wether these advancements would ever have been achieved if not for the sake of the competition of war.Words/ Pages : 843 / 24

Microsurgery Essays - Surgery, Oral And Maxillofacial Surgery

Microsurgery A man came into the emergency ward at one o'clock. His thumb came in an hour later. The surgeon's job: get them back together. The successful re-attaching of fingers to hand requires long hours of painstaking work in microsurgery. In the operating room , the surgeon doesn't stand, but sits in a chair that supports her body. Her arm is cradled by a pillow. Scalpels are present as are other standard surgical tools, but the suture threads are almost invisible, the needle thinner than a human hair. And all the surgical activity revolves around the most important instument, the microscope. The surgeon will spend the next few hours looking through the microscope at broken blood vessels and nerves and sewing them back together again. The needles are so thin that they have to be held with needlenosed jeweller's forceps and will sew together nerves that are as wide as the thickness of a penny. To make such a stitch, the surgeon's hands will move no more than the width of the folded side of a piece of paper seen end on! Imagine trying to sew two pieces of spaghetti together and you'll have some idea of what microsurgery involves. Twenty-five years ago, this man's thumb would have been lost. But in the 1960s, surgeon's began using microscopes to sew what previously had been almost invisible blood vessels and nerves in limbs. Their sewing technique had been developed on large blood vessels over a half century earlier but could not be used in microsurgery until the needles and sutures became small enough. The surgical technique, still widely used today, had taken the frustrating unreliability out of sewing slippery, round-ended blood vessels by ingeniously turning them into triangles. To do this, a cut end of a blood vessel was stitched at three equidistant points and pulled slightly apart to give an anchored, triangular shape. This now lent itself to easier, more dependable stitching and paved the way for microsurgery where as many as twenty stitches will have to be made in a blood vessel three millimetres thick. The needle used for this can be just 70 millimetres wide, only ten times the width of a human blood cell. All this technology is focused on getting body parts back together again successfully. The more blood vessels reattached, the better the survival chances for a toe or a finger. The finer the nerve resection, the better the feeling in a damaged part of the face, or control in a previously useless arm. But the wounded and severed body part must be treated carefully. If a small part of the body, such as a finger is cut off, instead of torn, wrapped in a clean covering, put on ice and then reattached within a few hours, the chance of success is over ninety percent, as long as one good artery and one good vein can be reattached. Not only is micro surgery allowing body parts to be reattached, it's also allowing them to be reshuffled. Before 1969, nothing could be done for you if you'd had your thumb smashed beyond repair. But in the past 14 years, you would have been in luck, if your feet were intact. Every year in North America, hundreds of big toes are removed from feet and grafted onto hands. Sometimes tendons are shifted from less important neighbouring fingers to allow the thumb to work better in its unique role of opposing the other fingers and allowing us to grip. While we in North America can live without our big toes and never really miss them, people in Japan can't. They need their big toes to keep the common footwear, the clog, on their feet. So their second toe is taken instead. Farmers, labourers car accident victims and home handymen are the people most often helped by microsurgery replants. And because blood vessels are being reattached, burn victims can now benefit. Flaps of their healthy skin are laboriously reattached more successfully, blood vessel by blood vessel, to increase chances that the graft will take. Some women, whose diseased Fallopian tubes have become blocked, can have them reopened mic rosurgically. When a cancerous esophagus must be removed, it can be replaced using a

The Noble Experiment - 1920 - Prohibition Essays - Free Essays

The Noble Experiment - 1920 - Prohibition Essays - Free Essays The Noble Experiment - 1920 - Prohibition In 1920 congress began what was called The Noble Experiment. This experiment began with the signing of the eighteenth amendment of the constitution into law. It was titled by society as Prohibition. Websters dictionary defines prohibition as: A prohibiting, the forbidding by law of the manufacture or sale of alcoholic liquors. Prohibition can extend to mean the foreboding of any number of substances. I define it as a social injustice to the human race as we know it. Prohibition was designed to rid the country of businesses that manufactured, sold, and or distributed alcoholic beverages. The eighteenth amendment made it a violation of the constitution to do and of the before mentioned. This was a crime punishable up to the Supreme Court. The original idea was that Americans as a whole were unhealthy, there was too much crime and corruption, and that people were being burdened by excess taxes that poorhouses and prisons were creating. What happened? The cheap alcohol being illegally produced killed more Americans, crime and corruption went up, taxes were raised to fund the law enforcement needed to enforce prohibition, and the prisons became overcrowded. Some would have you believe that crime decreased during prohibition. Well, it did. Crime decreased, as a whole, by 37.7% during prohibition. However violent crime and other serious crimes were up. Theft of property was up 13.2%, homicide was up m16.1%, and robbery was up 83.3%. Minor crimes had decreased though- by 50%. Crimes such as malicious mischief, public swearing, vagrancy, etc. (Dr. Fairbu rn pg 75-80) The prohibition movement did have its fair share of supporters however. The most active in the movement was the Womens Christian Temperance Union. They worked hard in campaigning towards this amendment and gathered, what is now believed today, as to be biased statistics. For example one area that the WCTU attacked was the saloons and in particular the sale of distilled spirits, hard alcohol. The WCTU claimed drinking during prohibition was down 30% as opposed to pre-prohibition. However as a percentage to total alcohol sales the consumption of distilled spirits was up from 50% (pre-prohibition) to an astonishing 89% during prohibition. Most estimates place the potency of prohibition-era products at 150+ percent of the potency of products produced either before or after prohibition (qtd. In Henry Lee 202) Prohibition did not succeed at all. In order for prohibition to achieve what it was set to do it had to meet four specific guidelines. It needs to have a significant decrease in the consumption of alcohol. This did not occur. Secondly after the initial drop, it needed to maintain that low. What did happen was that after the initial drop alcohol consumption rose steadily. Next, the

Copyright Notice and the Use of the Copyright Symbol

Copyright Notice and the Use of the Copyright Symbol A copyright notice or copyright symbol is an identifier placed on copies of the work to inform the world of copyright ownership. While the use of a copyright notice was once required as a condition of copyright protection, it is now optional. Use of the copyright notice is the responsibility of the copyright owner and does not require advance permission from, or registration with the Copyright Office. Because prior law did contain such a requirement, however, the use of a copyright notice or copyright symbol is still relevant to the copyright status of older works. The copyright notice was required under the 1976 Copyright Act. This requirement was eliminated when the United States adhered to the Berne Convention, effective March 1, 1989. Although works published without copyright notice before that date could have entered the public domain in the United States, the Uruguay Round Agreements Act (URAA) restores copyright in certain foreign works originally published without copyright notice. How Is a Copyright Symbol Useful Use of the copyright notice may be important because it informs the public that the work is protected by copyright, identifies the copyright owner, and shows the year of first publication. Furthermore, in the event that a work is infringed, if a proper notice of copyright appears on the published copy or copies to which a defendant in a copyright infringement suit had access, then no weight shall be given to such a defendants defense based on innocent infringement. Innocent infringement occurs when the infringer did not realize that the work was protected. The use of the copyright notice is the responsibility of the copyright owner and does not require advance permission from, or registration with, the Copyright Office. Correct Form for the Copyright Symbol The notice for visually perceptible copies should contain all the following three elements: The copyright symbol  © (the letter C in a circle), or the word Copyright, or the abbreviation Copr.The year of first publication of the work. In the case of compilations or derivative works incorporating previously published material, the year date of first publication of the compilation or derivative work is sufficient. The year date may be omitted where a pictorial, graphic, or sculptural work, with accompanying textual matter, if any, is reproduced in or on greeting cards, postcards, stationery, jewelry, dolls, toys, or any useful article.The name of the owner of copyright in the work, or an abbreviation by which the name can be recognized, or a generally known alternative designation of the owner. Example: copyright  © 2002 John Doe The  © or C in a circle notice or symbol is used only on visually perceptible copies. Phonorecords Certain kinds of works, for example, musical, dramatic, and literary works may be fixed not in copies but by means of sound in an audio recording. Since audio recordings such as audio tapes and phonograph disks are phonorecords and not copies, the C in a circle notice is not used to indicate protection of the underlying musical, dramatic, or literary work that is recorded. Copyright Symbol for Phonorecords of Sound Recordings Sound recordings are defined in the law as works that result from the fixation of a series of musical, spoken, or other sounds, but not including the sounds accompanying a motion picture or other audiovisual work. Common examples include recordings of music, drama, or lectures. A sound recording is not the same as a phonorecord. A phonorecord is a physical object in which works of authorship are embodied. The word phonorecord includes cassette tapes, CDs, records, as well as other formats. The notice for phonorecords embodying a sound recording should contain all the following three elements: The copyright symbol (the letter P in a circle)The year of first publication of the sound recordingThe name of the owner of copyright in the sound recording, or an abbreviation by which the name can be recognized, or a generally known alternative designation of the owner. If the producer of the sound recording is named on the phonorecord label or container and if no other name appears in conjunction with the notice, the producers name shall be considered a part of the notice. Position of Notice The copyright notice should be affixed to copies or phonorecords in such a way as to give reasonable notice of the claim of copyright. The three elements of the notice should ordinarily appear together on the copies or phonorecords or on the phonorecord label or container. Since questions may arise from the use of variant forms of the notice, you may wish to seek legal advice before using any other form of the notice. The 1976 Copyright Act overturned the strict consequences of failure to include copyright notice under prior law. It contained provisions that set out specific corrective steps to cure omissions or certain errors in the copyright notice. Under these provisions, an applicant had 5 years after publication to cure omission of notice or certain errors. Although these provisions are technically still in the law, their impact has been limited by the amendment making notice optional for all works published on and after March 1, 1989. Publications Incorporating United States Government Works Works by the U. S. Government are not eligible for U.S. copyright protection. For works published on and after March 1, 1989, the previous notice requirement for works consisting primarily of one or more U. S. Government works has been eliminated. However, use of a notice on such a work will defeat a claim of innocent infringement as previously described provided the copyright notice also includes a statement that identifies either those portions of the work in which copyright is claimed or those portions that constitute U. S. Government material. Example: copyright  © 2000 Jane Brown.Copyright claimed in Chapters 7-10, exclusive of U. S. Government maps Copies of works published before March 1, 1989, that consist primarily of one or more works of the U. S. Government should have a notice and the identifying statement. Unpublished Works The author or copyright owner may wish to place a copyright notice on any unpublished copies or phonorecords that leave his or her control. Example: Unpublished work  © 1999 Jane Doe

Survey collection website Essay Example | Topics and Well Written Essays - 250 words

Survey collection website - Essay Example In terms of pricing, both websites provide free sign-up for basic features and Pro Sign Up for advanced features. In surveymonkey.com, the Basic feature is free, select feature costs $24 per month, Gold feature costs $299 per year and Platinum costs $779 per year. I designed a survey with surveymonkey.com. The template was very easy to create because it just involved answering questions by selecting one of multiple choices provided. The template was useful because it enabled me to understand the item I was surveying; hence I could make the right decision. The survey was very easy to launch because I just filled some information and submitted; and then it was launched automatically. This might be useful for me in future to survey the market and make the right decision about my target market and the kind of product or service that I can offer in that market. In order to launch the product in real life, I would have needed to complete details of my target audience and the required number of audience to be surveyed. â€Å"Survey Monkey or Zoomerang: How to Choose?† by Susan Barnes is an article that explains the features and benefits of using the two websites. One of the disadvantages of using these features is that respondents are not see n, so they may provide unreliable information. Barnes, S. (2010). Survey Monkey or Zoomerang: How to Choose? Outreach Evaluation Resource Centre, Accessed October 4, 2014 from

Marketing of Centac-200 Compressors Essay Example | Topics and Well Written Essays - 750 words

Marketing of Centac-200 Compressors - Essay Example This has resulted in a cost-benefit matrix, covering sizes and types. Capital costs, life expectancy, installation costs, operation and maintenance costs have come to play a significant role in product marketing, customers being knowledgeable and demanding. The new Centac-200 compressors of Ingersoll-Rand (IR) are meant for original equipment manufacturers (OEMs) / direct customer applications. Â  In B2B sales effort for new products, while deciding on the channel(s) of distribution, one needs to analyze the existing marketing operations, demand analysis, and buyer behavior, product segmentation, targeting, positioning, and services marketing. The decision-making process of the potential buyers, their needs and the supplier’s own expectation from the product, are also to be taken into account. At the same time, a supplier like IR has also to sustain the loyalty of the existing distributors, who may feel threatened by the new product impacting their sales, in their own territory. Â  Air compressors are industrial products with a ‘consumer twist’ in the lowest range. IR marketed the smallest compressors (under 5 hp) through its merchandising manager (MM) who in turn appointed manufacturer’s representatives for sales through well-known retail chain stores. Â  Rest of the products are marketed through three channels namely, direct sales force, independent distributors, and company-owned ‘air-centers’. Since the independent distributors also handled competitors’ products, IR followed the policy of direct marketing for the higher range and newer products. The rationale for the direct sale of large size or newer model machines is justified by the buyer behavior.