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16657 Uppsatser om System Reliability Analysis - Sida 29 av 1111

Att testa kvalitet : En validerande informationsinsamlingsmetod för ökad kunskapsåterföring

This master thesis has been carried out at Scania R&D at the department for Powertrain Control System Development during the winter of 2010/2011. In the thesis the writer examine and evaluate the existing method for collecting information from the tests carried out during the development of the Powertrain Control Systems software. It also contains suggestions for how a new method that enhance the validation elements could look like.The master thesis uses Vicentes theories of the ecological approach and theories of how knowledge sharing of tacit and technical information works within an organization and between the organization and its customers. First a workplace analysis at Scania R&D is carried out to see how Powertrain Control Systems work and how they test their software. Second a control task analysis, where the aims decided on after the interviews, is compared to the existing method.

Förbättrar en kvalitetssäkring skördarens dimensionsmätning?

In this study it was investigated if the adoption of a new routine for quality control could improve the precision of the dimension measurement obtained by harvesters. Data was collected from three different harvesters. First, a reference data set was collected before the new procedures had been incorporated, and then when the new methodology was implemented another data set was collected by the harvester operators, allowing the two data set to be compered. The results indicated that following the implementation of the new procedures, the reliability and the precision of the measurements has increased. All harvesters included in the study had improved regarding most of the controlled factors such as standard deviation, systematic difference and hit rate within ± 2 cm for length and ± 4 mm for diameter..

International Corporate Governance-A Comparison of the Corporate Governance Systems in Germany and Sweden

The purpose of the study is to investigate how much interest media has shown selected topics in the corporate governance systems in Germany and Sweden. The four selected aspects are: ownership structure, employee representation on the boards, disclosure of board members? compensation and female directors on the boards. The reasons for and consequences of the similarities and differences will also be discussed. The German and Swedish corporate governance systems construct the key basis of the study, emphasised on the four chosen aspects.

Småhuset ? val av bergvärme, fjärrvärme eller pellets

This thesis describes the new construction of a small house and it includes studies of three heating systems: geothermal heating, district heating and pellet. The purpose of this thesis is to project a small house which can manage Building Regulations, BBR conditions and then examine three possible heating systems for the small house. This thesis is a literature study which gives an understanding of the heating systems technical structure, properties and costs. An empirical study completes the literature study by giving a deeper understanding of district heating costs and pellet costs. The empirical study contains two interviews, one of which was conducted in a district heating corporation and the other interview was conducted in a pellet corporation.

Elasticitetsmodulen i en kalkstabiliserad vägterrass : en fältstudie

Stabilization of subgrade is an internationally common technique to improve the characteristics of a soft soil. Improving the stiffness and bearing capacity of the subgrade enables the pavement to be designed with reduced depths of subbase and basecourse aggregates. This makes the stabilization technique both economically and environmentally interesting. Both natural and stabilized soils have high inherent property variability that should be considered when the characteristic value is derived. By analyzing the spatial variability in stabilized and natural subgrades it is possible get the parameters needed for reliability?based modeling of soil properties.

Som röken följer flamman : En studie om kostnadseffektiviseringar inom räddningstjänsten

Bakgrund Storstockholms brandförsvar (SSBF) har sedan bildandet 2009 arbetat mot en mer kostnadseffektiv organisation. Detta är ett relativt nytt sätt att tänka inom räddningstjänsten. Denna typ av organisationer har traditionellt sett opererat utan kostnadsfokus. För att beskriva räddningstjänsten organisatoriskt har vi använt oss av teoribildningen kring high reliability organizations (HROs), organisationer som alltid sätter säkerheten först. Arbetet mot en kostnadseffektivare organisation beskriver vi i termer av new public management (NPM) och lean production (Lean).

Svenska elevers sjunkande matematikkunskaper : möjliga orsaker och framtida insatser

National and international studies, such as PISA and TIMSS, which are part of the national evaluation system, are carried out continuosly. Skolverket, in collaboration with researchers, are responsible for the implementation, evaluation, and analysis of the studies. National results show an increasing percentage of pupils who do not reach the goals in mathematics. The last completed international studies PISA 2009 and TIMSS 2007 show an impaired trend of knowledge, in international comparison. Moreover, studies also show that the differences between schools and also within the same school in Sweden have increased.

Torkad eller gastät lagrad spannmål till värphöns - fallstudie

Syftet med detta examensarbete var att jämföra olika system för att lagra spannmål på.Spannmål som skall blandas in i fodret till de värphöns som finns på gården där det system som jag finner är bäst skall sättas upp. Jämförelsen gäller dels helt olika system, silo tork kontra lufttät lagring och olika systeminom lufttät lagring. Jämförelsen har varit en mestadels ekonomisk jämförelse men jag har även gjort en liten teknisk jämförelse. För att få fram fakta som jag kunde basera min fallstudie på så jämförde jag fyra olika system mot varandra.Det som jämfördes var els två system med lufttät lagring, ett system med silo torkning och ett system med inköpt färdigtorkad spannmål. Jag gjorde olika investeringskalkyleroch fick fram den totala årskostnaden för varje system och dels kostnaden per kilo spannmål för varje system samt också vad foderkostnaderna blir.

Analys av tanniner : från granbarksextrakt

The objective for this master?s thesis was to test and evaluate two methods for determining the content of tannin in a pinebarkextract. The methods used at Södra for this previously have not been specific enough, only the amount of polyphenolics have been measured. One of these methods is a test based on the Stiasny test and it determines the extracts ability to form a gel with formaldehyde. When this test was carried out it showed that the extract did not contain much tannin.

Inkludering - Utopi eller verklighet?

The aim of this paper is to shed some light on to what extent the process of making reality of Inclusion, as stated in International Declarations and in Government policies, has reached the actual educational activities in the school system. My chosen method is a case study, in which I have combined a survey with interviews in order to retrieve enough data for my analysis. I have also studied a number of policy documents and relevant literature. My analysis concludes, for the school that I have chosen to study, that there is still a lot to be done before inclusion becomes a reality. There are many obstacles to overcome, for instance; a constant struggle to obtain enough resources and to reach relevant levels of competence within the personnel.

Konstruktion och penetrationstestning av VoIP-system

VoIP-system inom fo?retag blir mer vanligt. Sa?kerheten bo?r da? beaktas fo?r att undvika hot som riskerar konfidentialitet, integritet och tillga?nglighet. Denna rapport visar resultat fra?n tva? olika VoIP-systems sa?kerhet med hja?lp av praktiska penetrationstestscenarion i labbmiljo?.

Beroende i leverantörsrelationer : En studie om IT-outsourcing och organisationers storleksmässiga betydelse

This report describes the process of translating Russian financial information in accordance with Russian Accounting Standards to IFRS, International Financial Reporting Standards. The author describes the two regulatory frameworks and reveals a number of risk factors in the process. These risk factors may affect the reliability of figures from Russian companies. The conclusion states some recommendations on how these risk factors can be managed..

Design av system för distribution av larm

Inom styr- och reglerteknik är hantering av larm en viktig fråga, speciellt då fastighetsbranschen mer och mer börjat automatisera driften av fastigheterna. Det finns ett antal system på marknaden som erbjuder larmdistribution via en mängd olika transportsystem. Syftet med projektet är att undersöka om det finns alternativ till dessa som erbjuder mer flexibilitet, samt att designa en prototyp till ett system som använder denna alternativa metod. Två befintliga system analyserades och en kravspecifikation baserad på analysen upprättades. Utifrån denna designades en prototyp som sköter distributionen över Internet och en enkel implementation av en del av designen har gjorts.

Testsystem för utredning av integrerad styrning för RC-helikopter

AbstractThis report is about the creation of a test system for development of a control system for a off the shelf RC-helicopter, which can be bought for about two thousand SEK. The test system consists of both electronics for controlling the helicopter and mechanical constrainer. The constrainer is used for mounting the helicopter so that it won´t crash.A circuit board including processor and sensors was manufactured. This was used for doing test of the different control algorithms. In this way were we able to analyze the quality of the sensors chosen, and what other sensors that could contribute to the control of the system.Basic helicopter control have been studied and presented in the report.

Tryckpulsgenerering för funktionskalibrering av mätsystem

The running of gas turbines with low emissions causes high pressure pulsations to arise in the combustion chamber. These pulsations are high amplitude sound vibrations. At some frequencies these are harmful to the gas turbine. Hence these pulsations are monitored to avoid operating conditions where pulsations are specifically harmful. It is necessary to expose the system of known pulsations to verify the functionality of the monitoring process.

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