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16657 Uppsatser om System Reliability Analysis - Sida 16 av 1111
Ett mät- och reglersystem för temperaturkompensering
An automatic control system for calibration of pressure indicators has been constructed. This control system can be used as a complement to the calibration system located at AerotechTelub, division MainPartner, in Linköping. The calibration system used today contains some not wanted pressure changes, which is compensated by hand today. The new system presented in this report automates the calibrating process and simplifies the calibration. Suitable hardware as motor, controls card and so on have been found and software in the form of Visual Basic program has been developed.
Misslyckade IT-projekt : Vilken fas i systemutvecklingens livscykel är mest bidragande
Many IT projects that have been developed in recent years are often considered to be unsuccessful. According to a study by Exido up to the 72% of all IT projects are considered to be failed. A failed IT projects means that the organizations that have ordered the new system may have higher costs or/and the system will not be ready in time. If costs are too high the new system might not be installed in the organization or if the system is not completed within the specified time frame the organization can become stagnant.In this paper we conduct an investigation of the failure of IT projects there we will examine where, in the systems development lifecycle four different phases, projects fail. We will conduct an empirical study of each phase, where we describe the key steps in the process; we will also investigate failed IT projects that are linked to the current phase.
Effektivare produktionsarbete med BIM som arbetssätt på Skanska Väg och Anläggning region Stockholm
The author of this report has created a Web-based invoice system and CRM at therequest of the company Webhouse.se. The purpose of the System is to makeeveryday tasks in the company easier. The system also needed to prevent mistakesand errors by managing orders and invoices.The system has been created with the company?s requests in focus. During thedevelopment of the system information security and interaction design have beenimportant aspects that have been taken into consideration.The system has been created using techniques such as PHP and MYSQL.
Spänningsstyrd underfrekvenslastfrånkoppling i elektriska kraftsystem
This report is a Master?s Thesis performed by Andreas Adolfsson and David Jacobsson atChalmers University of Technology. The purpose of this master?s thesis is to evaluate anew method for load-shedding, the voltage controlled underfrequency load-sheddingdeveloped by ABB. This report presents a comparison between conventionalunderfrequency load-shedding and this new method for load-shedding.
Resurssnålt kommunikationsprotokoll för små inbyggda system
Web Services har vuxit i popularitet de senast åren. Användningen av inbyggda systemökar också ständigt, och möjligheten att göra inbyggda system tillgängliga via Web Services öppnar nya möjligheter.Detta arbete visar på möjligheter och problem med standardiserade textbaserade protokoll för kommunikation i inbyggda system med små resurser. XML-RPC och SOAP studeras ur detta perspektiv. SOAP befinns vara mer komplext att implementera stöd för än XMLRPC i den begränsade testmiljön, som har 32kB internminne. XML-RPC visar sig ge fördelar över proprietära protokoll främst när det gäller underhållbarhet och återanvändbarhet..
Interaktionsloggning i Scania Interactor
Scania provides a fleet management system for hauliers who want to control their fleets in anefficient way. The system includes an onboard computer with touch screen called ScaniaInteractor where the driver can access GPS navigation, order support, message service and otherfunctionalities. The purpose of this thesis is to develop a concept for logging the user interactionon the Interactor and analyze the result which enables further development and optimization ofthe interface.A demonstration application is designed, implemented and tested for the purpose of showing thepossibilities and difficulties with logging of interaction. The result shows that logging is quiteeasy to implement and that the amount of produced data is small and therefore not expensive totransfer via GPRS to a central server where searching and analysis can be done. On the otherhand, the biggest challenge lies in the analysis and interpretation of the logged data and to applyit to the development of the interface.
Driftsäkerhet i verksamhetskritiska system
Vi har undersökt ett verksamhetskritiskt system i en större organisation för att se hur systemet är konstruerat och hur förvaltningsarbetet bedrivs för att undvika avbrott i systemet. Då det är särskilt viktigt att dessa system har hög tillgänglighet har vi försökt lyfta fram faktorer som visat sig vara särskilt viktiga för att uppnå hög tillgänglighet. Undersökningen har genomförts som en fallstudie där vi intervjuat personer med olika befattningar inom organisationen. Vi presenterar även ett antal rekommendationer som vi tror kan minska risken för avbrott i det undersökta systemet..
Ändring av befintligt ridhus : Gävle Fältrittklubb
In past decades information technology has changed the conditions of organizations, not at least within the industry. Advanced IT systems have become a fact in order to cope with rapid changes in the market and to effectively manage an organization?s knowledge. When organizations became more flexible and customized expectations from customers and stakeholders also become higher. These expectations and guidelines are documented in a company?s management system, which can be designed differently depending on what standards the company chooses to implement.
Implementation av ett Content Management System
Under de senaste åren har webbplatser blivit allt mer komplexa och informationen som ska visas och hanteras allt större. För att underlätta hantering och administration av dessa system har många CMS-system vuxit fram. Dessa system kan skilja sig mycket beträffande pris och funktionalitet, allt från mindre open source system till stora komplexa kommersiellt drivna system. Detta arbete bygger på att skräddarsy ett CMS-system för administration och hantering av innehåll på diverse artist sidor, som hanteras av ett medieföretag. Systemet använder tekniker som JavaScript, PHP, MySQL som grund för dess uppbyggnad.
"Mig finner ingen, ingen jag finner" : En studie av identitetsmarkörer i Almqvists roman Drottningens Juvelsmycke
In this examination paper I?m using the qualitative method: phenomenographic analysis to present twenty educated and working pre-school teachers opinions about being outdoors in Swedish pre-school. The purpose is to describe the variation between different pre-school teachers? opinions, not to focus on wrong or right. The paper starts with a review over the opinions presented by the literature on the subject.
Övervakning för DC-system
Examensarbete har utförts för AIAB DC Systems i Karlstad.Vår uppgift gick ut på att göra ett övervakningssystem för DC-system. Enheten skall användas för att övervaka isolerade DC-system avseende spänningsnivåer och isolation samt larma vid fel. Tidigare har man haft ett analogt system ute på marknaden men nu vill man ha ett digitalt processorbaserat system.Vi har använt oss av en 8-bitars RISC-processor. Programmeringen har gjorts i assembler med hjälp av ett utvecklings-kit och sköter logiken för övervakningen. Programmet manövreras med två tryckknappar och en display.Programmet vi har tagit fram behöver kompletteras med vissa funktioner.
Analys, design och implementering av Orbit ones dokumenthanteringssystem
This report describes the development of a system for controlling documents.
The report
starts with a problem description which the company wants an intranet-based
solution
for. The report then continues to describe the development phase for the
different parts
of the system which results in a complete system.
The company that wanted this system is called Orbit One and is located in
Ronneby,
Sweden. They have had a problem with old documents circulating in different
versions
and in different binders. Now thanks to their new system they can access their
documents easy and on demand through their intranet..
Nelson Garden AB : analys och förslag baserat på Service Management Systemet
Title: Nelson Garden AB ? Analysis and recommendations based upon the Service Management System
Course: Business Leadership within horticulture and agriculture.
Author: Annika Kirilov
Tutor: Carl-Johan Asplund
Examiner: Anders Kristoffersson, lecturer within business economics, LTJ- faculty, SLU Alnarp
Keywords: Bröderna Nelson, Nelson Garden, Service Management System, marketing, customer service, retailer
Aim: Explore how Nelson Garden AB manages to reach out to customers through positioning of their own labels, when they as a manufacturer are partly dependent on the competence and sales skill of retailers.
Methodology: E-mails were sent out to 6 different companies with a proposition for participation. Of those companies that gave a positive answer the most suited company for the diploma work was selected. Thereafter, a contact was established through telephone with the CEO of the chosen company and relevant questions to him were formulated. The second time of contact the first interview was held and half of the questions were answered.
Systemutveckling med avseende på systemförvaltning
This final year project is dedicated to investigate the problem domain of system maintenance management. The purpose is to find problems in the system maintenance management of today. Whether there is any problem that can be elicitated in the requirements engineering?s phase that could help to obtain more maintenance management friendly systems and if it is not possible to obtain more maintenance management friendly, what else can be done?It has been learned that there are many problems today in the problem domain and the most great ones are the system documentation, stress and a systemknowledge lack among developers, system managers and system users.The requirements that have been found for this problem is good documentation, and use of simple solutions in the creating of the system..
IT-systemsutvärdering för konsultverksamheter Vid val av nytt system att sälja
Konsultverksamheter har idag en stor mängd system och leverantörer att välja mellan vid
val av att bli återförsäljare till ett nytt system. Denna mängd av system kan vid vissa
tillfällen ställa till osäkerhet i form av vilket system som passar bäst in i verksamhetens
portfolio. Genom en effektiv utvärdering kan dock detta avhjälpas och det system som
passar bäst för verksamhet väljas. Uppsatsen bygger på en kvalitativ litteraturstudie där
också en intervju utförts. Vidare har de teoretiska utgångspunkterna hämtats utifrån
modeller såsom Standardsystem i Verksamheter och Välja och Förvalta Standardsystem.
Dessa modeller ligger sedermera till grund för den modell som presenteras i uppsatsen
och förenklar konsultverksamheternas problematik med att fatta ett genomarbetat val av
system till sin portfolio..