How to Improve and Retain Your German Fluency

Here are some suggestions to help you with your goal to improve your German.   Surround yourself in German:Label your home, your workplace with German words. And dont label with nouns only. Do colours, verbs (such as à ¶ffnen /open and schließen /close on a door), adjectives (e.g. rauh/rough, weich/soft on different textures).Paste the conjugation of verbs you have difficulties with on your bathroom mirror.Change the settings on your computer to German.Have a German site as your homepage.Learn at least one German word a day: More if you can retain them. Then practice it on someone that day or write it in a sentence, so that it becomes part of your spoken vocabulary and not just your comprehension vocabulary.Write in German every day: Keep a journal or diary, get an e pen-pal or join the one-on-one classes on our forum. Write your to-do lists in German.Read in German every day: Read, read, read!Subscribe to a German newspaper/magazine, a German-American newspaper or read German magazines/newspapers online.Use a German cookbook.Read childrens books. They expo se you to basic vocabulary, dont have much jargon and often use repetition. As your vocabulary increases, try older childrens/youth books.Read dual-language books. They give you the satisfaction of reading more advanced classic books.Listen to German every day: Challenge yourself to watch a German podcast, show etc. or listen to German music every day.Find a German buddy: If there are no Germans near where you live, pair up with someone else who is learning German and commit yourselves to speaking only German with each other.Practice wherever you go: Though limited in a non-German speaking country, with some creativity, you can get some daily German practice. Every little bit helps.Become involved in your local German club: Also try the universitys Kaffeeklatsch, the Goethe-Institute. Depending where you live, you may have the opportunity to attend German festivities, German film screenings, book clubs etc. If no such thing exists in your community, why not create your own German c lub? Even just a simple evening of German board games with two or three people will enrich your German learning experience.Take a German course: Check out your community college, university or language schools for courses. Study for a German proficiency test this year.Study/Work in Germany: Many German organizations and institutions offer scholarships or grants for a study abroad experience.Most important resolution to always keep: Believe that you can and will learn German.

As Long as there is a Profit to be Made, Discoveries will...

The question posed for this microtheme asks the difference between science and technology. This has been a question I’ve pondered in the past. My personal viewpoint is that as long as there is a profit to be made, discoveries will be exploited. Science relies on technology to pursue science, meaning more technology developed to support further pursuit. The line is very blurred for me. Are scientists merely messengers making discoveries, inadvertently helping others advance their position by exploitation? Most Americans consider Thomas Edison a great inventor and scientist, yet James Burke shows disdain for the accomplishments attributed to Edison, apparently because of the method and money made in the process. Does profit separate science and technology? Benjamin Franklin never took out a patent, believing, in the 18th century, inventions were something mankind should be as happy to share as they are to use from one another. He created technology out of science and made no profit. Does that make him a pure scientist? Andy Warhol was a similar mindset as Edison using apprentices and others to create his ideas, such as his acclaimed silk-screened image of â€Å"Gold Marilyn Monroe†. Does that mean he was a technician, not an artist? Can one be both? He surely made a profit. Galileo used collaboration to advance science in the 17th century, with written correspondence and discussions about various topics that were yet to be confirmed, or revealed, such as the vacuumShow MoreRelatedFirestone s An Civil War1410 Words   |  6 Pagesthe Firestone plantation and the exploitation of workers. The problem with this was that Firestone’s primary intention was to return and make a profit, not taking the lives and opinions of their workers into consideration. Firestone s action was immoral leading to accepting the abuse and exploitation of their workers on the necessity of making a profit. 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The Industrial1599 Words   |  7 PagesRevolution had been a positive influence on Europe or not? It was to be a succession of radical changes that effected people in the way they lived and worked. As before the Industrial Revolution everything had to be made by hand, so, people used to grow their crops, weave their own cloth and made almost everything by hand. However, this all began to change around the mid-1700 s, as people now began to use machinery instead. For example, the revolutionary use of waterpower that had come into use for allRead MoreEssay Impact of Cyber Security Vulnerability on Organizations1263 Words   |  6 Pagesfellow of an industry that uses it to get their tasks performed. The uncovered customer software side is the most importa nt cybersecurity vulnerability/ weakness that the IT community is facing nowadays. Since all the new industries (companies, non-profits or government entities) use networks and computers as the component of everyday tasks, this weakness is applied to all each and every one of them. Due to this fact, the most important cyber security vulnerability is uncovered customer software. Read MoreNebobites Ethical Dilemma1406 Words   |  6 Pagesuncomfortable with this practice, and she knows that this year’s financial statements will retain an overstated Bad Debt Expense estimate and more than likely result in an understated Bad Debt Expense estimate in 2013. 2. An ethical decision must be made by Jenny, because she is going to have to decide what is morally right or wrong. This fake presentation of increase in earnings will potentially affect every stakeholder involved with the company including their shareholders, creditors, management

Strategic Alignment and Data Management Tools - Technologies and Threat

Question: Discuss about the Strategic Alignment and Data Management Tools, Technologies and Threats. Answer: Introduction The present era is an era of digitization and technology. There has been a complete change in the technology that was used by the organizations 30 years back and the one that is used presently. Digitization refers to the process of converting the data and information in a digital format for use and for communication as well (WhatIs.com, 2016). The revolution has made it easy to access and share the information. It is necessary for the organizations to develop strategy and tools to adapt to the ever changing technology. Tools Used by the Organizations There are a number of different tools that are used by the organization to understand and analyze the competitive environment and to take a competitive edge. SWOT Analysis It is a tool which is used to analyze the strengths, weaknesses, opportunities and threats associated with the organization. It considers all the internal and external factors and represents the results in the form of a matrix with a few points under each of the four categories. It helps in understanding the current structure and the one that is necessary for gaining competitive advantage. PEST Analysis It is the tool which is used to gain a deep knowledge and understanding of the external macro-environments. It presents the political, economical, social and technological factors which may be the opportunities or threats detected in SWOT analysis (cimaglobal, 2016). Portes Five Force Model Porters Five Force Analysis It is a model or a tool which is used to understand the changing factors along with the new competition in the market, user preference, supplier specifications and many more. Value Chain Analysis It presents a list of activities for an organization which aids in the value creation process. Value Chain Analysis Data Analytics It is one of the most expanding area and the Big Data tools such as Hadoop, Hyperscale and many of the NoSQL databases are used to analyze, store and manage the data form a number of different sources. Role of Strategic Alignment Strategic Alignment is a process which is used to provide the organizations with a strategy that maps the requirements with the goals and objectives and also integrates the technology advancements in the process (Smallbusiness.chron.com, 2016). The role that the process plays is massive in terms of customer satisfaction, organizational growth, cost-effectiveness and integration of all of the processes that are associated with the system along with keeping the goals and objectives in mind. The following factors can help in the improvement of the strategic alignment: Planning Prior to the pioneers of an association can start a vital arrangement of the association, they should first investigate the condition of the association. These pioneers must choose what the objective of the association ought to be, and after that set targets that will help the association understand the objective. Organizational Unity Associations have individuals who work in various limits, working in various offices or divisions. What one individual in the association does in one office or division influences the exercises of others in the same or diverse offices or divisions. Strategic alignment ought to facilitate everybody's exercises so the association in general moves in the direction of the same objectives utilizing recommended forms. Resource Utilization How an association makes utilization of assets will decide the achievement or disappointment of the association. Representative time is not boundless, so strategic alignment ought to give workers heading and a dream of what makes a difference most in the association so they invest their energy in exercises that advance targets as opposed to concentrating only all alone objectives. Individuals from the association likewise turn out to be more aware of utilizing different assets to perform strategic objectives. Scope for adjustments An association's strategic alignment ought not stay static, but rather ought to be liquid and advance after some time. The circumstances in which the association winds up, incorporating nature in which the association capacities, changes after some time and influences how the association can and ought to work. The association likewise ought to evaluate its systems and accomplishment of objectives occasionally, making modification as required. An association may likewise understand that better methods for working exist and the association starts to embrace and execute these more powerful practices (Forbes.com, 2016). Benefits of Data Management There are a lot many advantages of an efficient data management and the same have been discussed below: There is a huge decrease in some of the additional costs that may otherwise emerge such as the cost associated with direct mail and marketing along with operational costs (oracle, 2016). It also helps in establishment of controls over data in a much better way. Data mapping also tends to becomes easier with the help of accurate data management techniques. Segmentation is the process of sectioning the data to improve the accessibility and the same is made easy through data management. Data hygiene is another important concept which includes removal of unwanted and redundant data from all the sources and the same is managed easily with the processes of data management (ANNUITAS, 2011). It also helps in easy accessibility and sharing of data (hsrc.ac.za, 2016). Importance of Web2.0 and Web3.0 for the organizations Web2.0 and Web3.0 are the technologies which are used for web application development that are user and data driven in nature. These are used to present interactive and responsive web designs to the user which are user-friendly in nature and also adapts to the user preferences. Web2.0 is important for the organizations as it provides the ability to bring forward an interactive design along with the ability to control the data. Dynamic content, scalability and rich user interface are some of the prime advantages of this technology and framework which attracts a large number of users towards the applications that are developed through it (Tekriti, 2016). Accessibility and availability are the two prime demands of the users which are catered by the organizations through Web3.0. It enables the user to access the data from any location and at any time. It makes the design not only interactive but also fit to be used for any device at any location such as on the smart phones and tablets (1stwebdesigner, 2016). Threats Introduced with Technology There are a number of security and privacy threats that are introduced with the technological advancements such as: There are increased instances of cyber crimes such as cyber stalking, cyber racism and cyber bullying (Grimes, 2016). Data breach and data loss are also two of the major risks that are seen which result in damage to the confidentiality, integrity and authenticity of the data (Power More, 2015). Attack of malicious software such as viruses, worms, Trojan horses, logic bombs and spyware also increases. It makes it easier for the intruders and attackers to flood the system with unwanted traffic and hamper the service with Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks. Malicious insider threats also increase with increase in technological advancements and the competitive edge as the motive of the organizations. There is also risk of decrease in productivity and efficiency of the employees as they tend to take time to adapt with the ingoing changes and that leads to slower processes and executions. Conclusion Technology has rapidly changes with time and the present world is the world of digital media and technological advancements. There are tools which are used to analyze and understand the required changes to being in the strategy considering the competitive environment. Some of these tools are SWOT analysis, PEST analysis, and value chain analysis and data analytics tools. Strategic alignment also plays a major role in this process as the same helps in streamlining all the processes. Data management is used by the organization to make it easy for the users to access the data and also for the organization to effectively store and manage the data. Web2.0 and Web3.0 are technologies that bring forward web development that is user and data driven and produces interactive designs. There are also a number of security and privacy threats that get introduced in the system due to changing technology. References 1stwebdesigner, (2016). [online] 1stwebdesigner.com. Available at: https://1stwebdesigner.com/what-is-web-3-0/ [Accessed 31 May 2016]. ANNUITAS. (2011). The Benefits of Data Management | ANNUITAS. [online] Available at: https://annuitas.com/2011/02/02/the-benefits-of-data-management/ [Accessed 31 May 2016]. Cimaglobal, (2016). [online] Available at: https://www.cimaglobal.com/Documents/ImportedDocuments/cid_tg_strategic_analysis_tools_nov07.pdf.pdf [Accessed 31 May 2016]. Forbes.com. (2016). Forbes Welcome. [online] Available at: https://www.forbes.com/sites/larrymyler/2012/10/16/strategy-101-its-all-about-alignment/#3512617e2257 [Accessed 31 May 2016]. Grimes, R. (2016). IT's 9 biggest security threats. [online] InfoWorld. Available at: https://www.infoworld.com/article/2614957/security/it-s-9-biggest-security-threats.html [Accessed 31 May 2016]. Hsrc.ac.za, (2016). [online] Available at: https://www.hsrc.ac.za/uploads/pageContent/2729/Benefits%20of%20Data%20Management%20and%20Sharing.pdf [Accessed 31 May 2016]. Oracle, (2016). [online] Available at: https://www.oracle.com/us/products/applications/master-data-management/roi-from-data-quality-168367.pdf [Accessed 31 May 2016]. Power More. (2015). The top 5 IT security threats for 2016 - Power More. [online] Available at: https://powermore.dell.com/technology/top-5-security-threats-2016/ [Accessed 31 May 2016]. Research.unsq.edu.au, (2016). [online] Available at: https://research.unsw.edu.au/benefits-good-data-management [Accessed 31 May 2016]. Smallbusiness.chron.com. (2016). Describe the Concept of Strategic Alignment. [online] Available at: https://smallbusiness.chron.com/describe-concept-strategic-alignment-14054.html [Accessed 31 May 2016]. Tekriti. (2016). Advantages of Web2.0 Development and Web 2.0 Development Services. [online] Available at: https://www.tekritisoftware.com/web-2.0-development-and-web-2.0-development-services [Accessed 31 May 2016]. WhatIs.com. (2016). What is digitization? - Definition from WhatIs.com. [online] Available at: https://whatis.techtarget.com/definition/digitization [Accessed 31 May 2016].

Why Software Systems Fail Essay Example For Students

Why Software Systems Fail Essay 1.0 IntroductionIn this report I will be concentrating on the failure of software systems. To understand why software systems fail we need to understand what are software systems. Software systems are a type of information system. This is because a software system is basically a means for hardware to process information. Flynns definition of an information system is:An information system provides procedures to record and make available information, concerning part of an organization, to assist organization-related activities.Humans have been processing information manually for thousands of years, but with the vast increase of demand for knowledge this century has meant that a new method of information processing has been needed. Software systems have provided a new means that is much faster and efficient. As a result a huge number of organisations have become software dependent. Some of these systems are used to safeguard the lives of many people. This means that if these systems wer e to fail they could lead to devastating consequences. Here are some examples of where software systems are used heavily and could be very dangerous if they were to fail aviation, hospitals, space exploration, nuclear power stations and communications. I will be looking at some examples of actual software failure in these fields to explain the reasons why systems fail.2.0 Reasons for Systems FailureIf software systems failure can be so dangerous why can they not be completely eliminated? According to Parnas, The main reason is that software can never be guaranteed to be 100% reliable. Software systems are discrete-state systems that do not have repetitive structures. The mathematical functions that describe the behaviour of software systems are not continuous, and traditional engineering mathematics do not help in their verification. In other words some software can be so large that thorough testing can be almost impossible and so bugs in the software can go unnoticed. An example o f this was when an Atlas-Agena rocket veered off-course when it was ninety miles up. Ground control had to destroy the $18.5 rocket. The reasons for this a missing hyphen. However there are many more reasons for software systems failure, and most of them are due to human negligence that leads to software failure. There are two types of software systems failure. These are in the design stage of the software or in the implementation of the software. These are the main reasons for systems failure.Poor software design Fundamental flaws in the design of the software.Incorrect requirements specifications The brief is inconsistent or missing vital information. Political / Commercial pressures This can lead to developers skipping parts of the system to save time or money. There are also cases of rivalry between sub-contractors, which damages the design of the system.Incorrect analysis and assumptions Predictions based on incorrect assumptions of the real world or its behaviour.Not prop erly tested software implemented in a high risk environment This is almost guaranteed to lead to systems failure.Poor user-interface Makes it difficult or even impossible for the user to operate the software system.Incorrect fit between software and hardware Incorrect specification of the hardware type in the brief, or upgrading the hardware without upgrading the software (or vice-versa).Inadequate training given to the operators The people who have to use the software are not taught properly how to use the software system or they are expected to learn on their own. Over reliance on the software system The operators expect their software system to work in all conditions and to perform miracles for them.I will be looking at these types of systems failure with examples. 2.1 Poor software design- the Denver airport automated luggage handling systemAn example of poor software design is the Denver International Airport luggage controller. In this case Jones says that the senior exec utives did not have a sufficient background in software systems and as a result accepted nonsensical software claims at face value.The airport boasted about its new automated baggage handling system, with a contract price of $193 million, will be one of the largest and most sophisticated systems of its type in the world. It was designed to provide the high-speed transfer of baggage to and from aircraft, thereby facilitating quick turnaround times for aircraft and improved services to passengers. The baggage system, which came into operation in October 1995, included over 17 miles of track; 5.5 miles of conveyors; 4,000 telecarts; 5,000 electric motors; 2,700 photocells; 59 laser bar code reader arrays; 311 radio frequency readers; and over 150 computers, workstations, and communication servers. The automated luggage handling system (ALHS) was originally designed to carry up to 70 bags per minute to and from the baggage check-in.However there were fundamental flaws identified but not addressed in the development and testing stage. ABC news later reported that In tests, bags were being misloaded, misrouted or fell out of telecarts, causing the system to jam. The Dr. Dobbs Journal (January 1997) also carried an article in which the author claims that his software simulation of the automatic baggage handling system of the Denver airport mimicked the real-life situation. He concluded that the consultants did perform a similar simulation and, as a result, had recommended against the installation of the system. However the city overruled the consultants report and gave the go-ahead (the contractors who were building the system never saw the report).The report into the failure of the Denver ALHS says that the Federal Aviation Authority had required the designers (BAE Automated Systems Incorporated) to properly test the system before the opening date on 28th February 1995. Problems with the ALHS had already caused the airports opening date to be postponed and no furth er delays could be tolerated by the city. The report speculates that delays had already cost the airport $360 million by February 1995.The lack of testing inevitably led to problems with the ALHS. One problem occurred when the photo eye at a particular location could not detect the pile of bags on the belt and hence could not signal the system to stop. The baggage system loaded bags into telecarts that were already full, resulting in some bags falling onto the tracks, again causing the telecarts to jam. This problem caused another problem. This one occurred because the system had lost track of which telecarts were loaded or unloaded during a previous jam. When the system came back on-line, it failed to show that the telecarts were loaded. Also the timing between the conveyor belts and the moving telecarts were not properly synchronized, causing bags to fall between the conveyor belt and the telecarts. The bags then became wedged under the telecarts. This eventually caused so many pr oblems that there was a need for a major overhaul of the system.The government report concluded that the ALHS at the new airport was afflicted by serious mechanical and software problems. However you can not help thinking how much the city was blamed for their part in a lack of demand for proper testing. Denver International Airport had to install a $51 million alternative system to get around the problem. However United Airlines still continue to use the ALHS. A copy of the report can be found at http://www.bts.gov/smart/cat/rc9535br.html.2.2 Political / Commercial pressures the Challenger DisasterThere are many examples of failures occurring because of this. One of the most famous examples of these is the Challenger disaster. On the 28th January 1986 the challenger space shuttle exploded shortly after launch, killing all seven astronauts onboard. This was initially blamed on the design of the booster rockets and allowing the launch to proceed in cold weather. However it was later revealed that there was a decision along the way to economize on the sensors and on their computer interpretation by removing the sensors on the booster rockets. There is speculation that those sensors might have permitted earlier detection of the booster-rocket failure, and possible early separation of the shuttle in an effort to save the astronauts. Other shortcuts were also taken so that the team could adhere to an accelerated launch sequence. (Neumann). This was not the first time there had been problems with space shuttle missions. A presidential commission was set up and the Chicago Tribune reported what some astronauts said, that poor organization of shuttle operations led to such chronic problems as crucial mission software arrived just before shuttle launches and the constant cannibalization of orbiters for spare parts. Obviously the pressures of getting a space shuttle launch and mission to run smoothly and on time is huge. However there has to be a limit on how many short cuts can be taken. Another example of commercial pressure is the case of a Fortune 500 company. (A Fortune 500 company is one that appears in a listing of the top 500 U.S. companies ranked by revenues, according to Fortune magazines classic list.) According to Jones, the client executive and the senior software manager disliked each other so intensely that they could not never reach agreement on the features, schedules, and effort for the project (a sales support system of about 3000 function points). They both appealed to their higher executives to dismiss the other person. The project was eventually abandoned, after acquiring expenses of up to $500 000. Jones reported another similar case in a different Fortune 500 company. two second-line managers on an expert system (a project of about 2500 function points) were political opponents. They both devoted the bulk of their energies to challenging and criticizing the work products of the opposite teams. Not surprisingly the project w as abandoned after costing the company $1.5 million.2.3 Incorrect analysis and assumptions the Three Mile Island accidentIncorrect assumptions can seem very obvious when they are thought about, however it does not stop them from creeping in. According to Neumann a Gemini V rocket landed a hundred miles off course because of an error in the software. The programmer used the Earths reference point relative to the Sun, as elapsed time since launch, as a fixed constant. However the programmer did not realise that the Earth position relative to the Sun does not come back to the same point 24 hours later. As a result the error accumulated while the rocket was in space. The Three Mile Island II nuclear accident, on 28th March 1979, was also blamed on assuming too much. The accident started in the cooling system when one of the pipes became blocked, resulting in the temperature of the fuel rods increased from 600 degrees to over 4000 degrees. Instruments used to measure the temperature of the reactor core was not standard equipment at the time, however thermocouples had been installed and could measure high temperatures. However after the temperature reached over 700 degrees the thermocouples had been programmed to produce a string of question marks instead of displaying the temperature. After the reactor started to over-heat the turbines shut down automatically. However this did not stop the rods from over-heating as someone had left the valves for the secondary cooling system closed. There was no way of knowing this at the time because there was no reading on the temperature of the reactor core.Operators testified to the commission that there were so many valves that sometimes the would get left in the wrong position, even though their positions are supposed to be recorded and even padlocked. This is also a case of the designers blaming the operators and vice-versa. In the end the operators had to concede reluctantly that large valves do not close themselves.Petros ki says, Contemporaneous explanations of what was going on during the accident at Three Mile Island were as changeable as the weather forecasts, and even as the accident was in progress, computer models of the plant were being examined to try to figure it out. Lots of assumptions had been made about how high the temperature of the reactor core could go and the state of the valves in the secondary cooling system. This shows that in an environment where safety is supposed to be the number one issue people are still too busy to think about all the little things all the time and high pressure situations develop that compromise the safety of hundreds of thousands of people. It took until August 1993 for the site to be declared safe. Facts are taken from Neumann and Perrow.2.4 Not properly tested software implemented in a high risk environment the London Ambulance ServiceThe failure of the London Ambulance Service (LAS) on Monday and Tuesday 26 and 27 November 1992, was, like all major fa ilures, blamed on a number of factors. These include inadequate training given to the operators, commercial pressures, no backup procedure, no consideration was given to system overload, poor user interface, not a proper fit between software and hardware and not enough system testing being carried out before hand. Claims were later made in the press that up to 20-30 people might have died as a result of ambulances arriving too late on the scene. According to Flowers, The major objective of the London Ambulance Service Computer Aided Despatch (LASCAD) project was to automate many of the human-intensive processes of manual despatch systems associated with ambulance services in the UK. Such a manual system would typically consist of, among others, the following functions: Call taking. Emergency calls are received by ambulance control. Control assistants write down details of incidents on pre-printed forms.The LAS offered a contract for this system and wanted it to be up and running by 8th January 1992. All the contractors raised concerns about the short amount of time available but the LAS said that this was non-negotiable. A consortium consisting of Apricot, Systems Options and Datatrak won the contract. Questions were later asked about why there contract was significantly cheaper than their competitors. (They asked for 1.1 million to carry out the project while their competitors asked for somewhere in the region of 8 million.)The system was lightly loaded at start-up on 26 October 1992. Staff could manually correct any problems, caused particularly by the communications systems such as ambulance crews pressing the wrong buttons. However, as the number of calls increased, a build up of emergencies accumulated. This had a knock-on effect in that the system made incorrect allocations on the basis of the information it had. This led to more than one ambulance being sent to the same incident, or the closest vehicle was not chosen for the emergency. As a consequence, the system had fewer ambulance resources to use. With so many problems the LASCAD generated exception messages for those incidents for which it had received incorrect status information. The number of exception messages appears to have increased to such an extent the staff were not able to clear the queues. Operators later said this was because the messages scrolled of the screen and there was no way to scroll back through the list of calls to ensure that a vehicle had been dispatched. This all resulted in a viscous circle with the waiting times for ambulances increasing. The operators also became bogged down in calls from frustrated patients who started to fill the lines. This led to the operators becoming frustrated, which in turn led to an increased number of instances where crews failed to press the right buttons, or took a different vehicle to an incident than that suggested by the system. Crew frustration also seems to have contributed to a greater volume of voice radio traff ic. This in turn contributed to the rising radio communications bottleneck, which caused a general slowing down in radio communications which, in turn, fed back into increasing crew frustration. The system therefore appears to have been in a vicious circle of cause and effect. One distraught ambulance driver was interviewed and recounted that the police are saying Nice of you to turn up and other things. At 23:00 on October 28 the LAS eventually instigated a backup procedure, after the death of at least 20 patients.An inquiry was carried out into this disaster at the LAS and a report was released in February 1993. Here is what the main summary of the report said:What is clear from the Inquiry Teams investigations is that neither the Computer Aided Despatch (CAD) system itself, nor its users, were ready for full implementation on 26 October 1992. The CAD software was not complete, not properly tuned, and not fully tested. The resilience of the hardware under a full load had not been tested. The fall back option to the second file server had certainly not been tested. There were outstanding problems with data transmission to and from the mobile data terminals. Staff, both within Central Ambulance Control (CAC) and ambulance crews, had no confidence in the system and was not all fully trained and there was no paper backup. There had been no attempt to foresee fully the effect of inaccurate or incomplete data available to the system (late status reporting/vehicle locations etc.). These imperfections led to an increase in the number of exception messages that would have to be dealt with and which in turn would lead to more call-backs and enquiries. In particular the decision on that day to use only the computer generated resource allocations (which were proven to be less than 100% reliable) was a high-risk move.In a report by Simpson (1994) she claimed that the software for the system was written in Visual Basic and was run in a Windows operating system. This decis ion itself was a fundamental flaw in the design. The result was an interface that was so slow in operation that users attempted to speed up the system by opening every application they would need at the start of their shift, and then using the Windows multi-tasking environment to move between them as required. This highly memory-intensive method of working would have had the effect of reducing system performance still further.The system was never tested properly and nor was their any feedback gathered from the operators before hand. The report refers to the software as being incomplete and unstable, with the back up system being totally untested. The report does say that there was functional and maximum load testing throughout the project. However it raised doubts over the completeness and quality of the systems testing. It also questions the suitability of the operating system chosen.This along with the poor staff training was identified to be the main root of the problem. The mana gement staff was highly criticised in the report for their part in the organisation of staff training. The ambulance crew and the central control crew staff were, among other things, trained in separate rooms, which did not lead to a proper working relationship between the pair. Here is what the report said about staff training:Much of the training was carried out well in advance of the originally planned implementation date and hence there was a significant skills decay between then and when staff were eventually required to use the system. There was also doubts over the quality of training provided, whether by Systems Options or by LASs own Work Based Trainers (WBTs). This training was not always comprehensive and was often inconsistent. The problems were exacerbated by the constant changes being made to the system.Facts are taken from http://catless.ncl.ac.uk/Risks, http://www.scit.wlv.ac.uk and the report of the Inquiry into the London Ambulance Service, February 1993.2.5 Poor u ser-interfaceThe last case was a good example of how a poor user-interface can lead to mayhem. Another similar case was reported to the Providence newspaper. The Providence (part of New York) police chief, Walter Clark, was grilled over why his officers were taking so long to respond to calls. In one case it took two hours to respond to a burglary in progress. He explained that all the calls are entered into a computer and are shown on a monitor. However the monitor can only show twenty reports at a time as the programmer did not design a scroll function for the screen. The programmer had some serious misconceptions about the crime rate in New York. Facts taken from: http://catless.ncl.ac.uk/Risks.2.6 Over reliance on the software systemThe Exxon Valdez oil disaster was simultaneously blamed on the drunken captain, the severely fatigued third mate, the helmsman and the system. The system refers to the auto-pilot of the ship and the lack of care the crew had on its operation. Accordi ng to Neumann the crew were so tired that they did not realise that the auto-pilot was left on and so the ship was ignoring their rudder adjustments. This example shows that even though everything was working properly, all the safety measures had a minimal effect when they were trying to override the auto-pilot. This is a very small mistake and could easily have been prevented.The Therac-25 case, a system designed to give the right amount of radiation to the patient in chemotherapy treatment also fell into a case foolproofedness. The operators did not imagine the software permitted the therapeutic radiation device to be configured unsafely in X-Ray mode, without its protective filter in place (Neumann). Such blind faith in the system resulted in several patients being given too high a dose that killed the patients.3.0 ConclusionIt is obvious to see from these examples that failures are very rarely due to one cause alone. In major system failures it can be over a dozen mistakes being made that usually results in the failure of the system. Also the mistakes have a domino effect or leads to a viscous circle of mistakes, the systems becoming worse and worse during both the design and implementation stage. In almost all large system failures there is a case of when commercial pressures are put above safety. The Paddington rail crash (5th October 1999) could have been prevented if the train had been fitted with the Train Protection Warning System. This system would physically stop the train if it went through a red signal and was recommended in the report following the train crash at Southall. However it would have cost Railtrack something like 150-200 million. The system will however now be introduced to all trains by 2004. The facts were taken from BBC online.It is obvious that the main reason for the commercial pressures is cost. The Challenger disaster might have been prevented if sensors had not been removed from the booster rockets. But the cost of some extra sensors compared to the already astronomical cost of space exploration makes it seem a little nonsensical. The cost of a space shuttle is well over $1 billion, never mind the damage it did to NASAs reputation. However it is not always cost saving that leads to system failures. In both the Denver ALHS and the London Ambulance System CAD it is more a case of money wasting. When the initial investment has been made a company finds it very hard to terminate the project. They would rather get the system working than admit defeat, whatever the cost. Sometimes the cost can be in terms of human lives. This would be why United Airlines still insist on using the Denver ALHS and twenty people died before the LAS switched their dispatching system. Proper communication and feedback between the designers and the operators will stop a lot of problems like a poor user-interface and incorrect fit between the hardware and software. It all starts with a proper brief being given to the designers. But t his can only happen if the management knows what they want. So the only way to have a successful system is to have good communications and understanding between the designers and operators, with the senior managers being kept in the know at all times. However the most important job is for someone to take responsibility for the design and operation of the system. If someone who is competent is put in charge and takes responsibility then the system is likely to be working properly before its implementation and the operators will have adequate training for using the system. With the London Ambulance System this was doubly important where patients lives are at risk. In situations like these Ethics is the key word and there has to be someone held responsible for the actions of the organisation. 4.0 BibliographyFlynn, Donal J.; Information Systems Requirements: Determination and Analysis; McGraw-Hill Book Company; 1992Parnas; 1985; taken from: Sherer, Susan A.; Software Failure Risk Measu rement and Management; Plenum Press; 1992Jones, Carpers; Patterns of Software Systems Failure and Success; Thomson computer press; 1996Neumann, Peter G.; Computer Related Risks; Addison-Wesley publishing company; 1995Petroski, Henry; To Engineer is Human; MacMillan Publishing; 1985Flowers, Stephen; Software failure: management failure; Chichester: John Wiley and Sons; 1996.Report of the Inquiry into the London Ambulance Service; February 1993. Simpson, Moira (1994); 999!: My computers stopped breathing !; The Computer Law and Security Report, 10; March April; pp 76-81Dr. Dobbs Journal; January 1997 editionhttp://catless.ncl.ac.uk/Riskshttp://www.scit.wlv.ac.uk http://www.bbc.co.uk/newshttp://abcnews.go.com/sections/travel .u58990440ce4e446788d91e3f02a21697 , .u58990440ce4e446788d91e3f02a21697 .postImageUrl , .u58990440ce4e446788d91e3f02a21697 .centered-text-area { min-height: 80px; position: relative; } .u58990440ce4e446788d91e3f02a21697 , .u58990440ce4e446788d91e3f02a21697:hover , .u58990440ce4e446788d91e3f02a21697:visited , .u58990440ce4e446788d91e3f02a21697:active { border:0!important; } .u58990440ce4e446788d91e3f02a21697 .clearfix:after { content: ""; display: table; clear: both; } .u58990440ce4e446788d91e3f02a21697 { 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; } .u58990440ce4e446788d91e3f02a21697:active , .u58990440ce4e446788d91e3f02a21697:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u58990440ce4e446788d91e3f02a21697 .centered-text-area { width: 100%; position: relative ; } .u58990440ce4e446788d91e3f02a21697 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u58990440ce4e446788d91e3f02a21697 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u58990440ce4e446788d91e3f02a21697 .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; } .u58990440ce4e446788d91e3f02a21697:hover .ctaButton { background-color: #34495E!important; } .u58990440ce4e446788d91e3f02a21697 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u58990440ce4e446788d91e3f02a21697 .u58990440ce4e446788d91e3f02a21697-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u58990440ce4e446788d91e3f02a21697:after { content: ""; display: block; clear: both; } READ: Observation of the Early Childhood Essay We will write a custom essay on Why Software Systems Fail specifically for you for only $16.38 $13.9/page Order now