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2603 Uppsatser om Constant current regulator - Sida 12 av 174

Utformning av sidoområden med hänsyn till vägens livscykelkostnad

Single vehicle accidents are one of the most common types of accidents that occur on the Swedish road network. Depending on the design of the road, the presence of a crash barrier and embankment on the roadside, the outcome of a roadside collision can lead to serious injuries and even deaths.The aim of this project is to investigate the possibility of improving road safety by designing the optimal roadside area based on the results of a life cycle cost analysis (LCC).The questions that have been answered during the duration of this project are:1) Describe the current technical solutions for roadside area design and the various barrier types used in Sweden.2) Complete an existing mathematical model that has been developed by Hawzheen Karim, for calculating life-cycle costs for various roadside areas.3) Calculate and compare the life cycle costs for the side area with a barrier and without a barrier.By performing an analysis of the documentation on the current guidelines and rules for shaping the roadside, was it possible to describe the current technical solutions for the formation the roadside as well as the current roadside barriers in use today. A mathematical model for calculating the life cycle costs of different barrier types had already been developed by Hawzheen Karim. This model was supplemented so that it could calculate life-cycle costs of the roadside region with and without a barrier. After the model was completed, an analysis was performed to obtain life-cycle costs of a roadside with and without a barrier.The result showed that there is a clear relationship between the slope inclination, fill height, and the rate at which the costs rise.

Dagens Agora : En kritisk granskning av Internets möjligheter och begränsningar

The time we live in now is significant for its many ways of spreading information- it is indeed the era of communication. The Internet is the main reason for this evolution, where you can reach out to any corner in the world in less then a second. Information is flowing over us and we get more and more used to being in a constant accessible state. The individual might spread his own word as he wishes. From a democratic point of view this should give a great opening for everyone into the public spheer.

Vad kostar det?: Fallstudie av en banks kostnadsallokeringssystem

This paper investigates the internal product costing system in one of the Swedish banks with the purpose to evaluate the quality of its product costs and possible implications on decision making. The study shows that the current system distorts product costs by, among other things, using relative allocation of costs and time and by allocating all costs to individual units of products. We therefore propose an alternative product costing system, which mainly draws on ABC theory but is also adapted to the specific needs of service companies and of the Bank. This proposal is intended as a solution in this particular case and not to be generalized in other contexts. We hope however to add to the understanding of why more complex costing systems, such as the ones based on ABC theory are, according to previous studies, not widely used in practice.

Energianalys av Svensk Växtkrafts biogasanläggning i Västerås

Svensk Växtkraft is the owner of the biogas plant in Västerås. The company is planning to increase their treatment capacity at their biogas plant. In connection to this work it is also possible to make some energy saving changes to the biogas plant. The objective of this study was therefore to make an electricity and heat survey of the biogas plant, a detailed study of the heat consumption in the sanitation step and also a comparison of energy consumption with the present sanitation method and an alternative strategy where the waste is treated in 55 °C during 10 hours (the current method is heating to 70 °C during 1 hour). The energy survey was conducted in close collaboration with staff at the biogas plant. The current during normal operation was measured, power was calculated and multiplied by the time of usage to obtain the energy consumed.

Ökad kapacitet i Stockholms kollektivtrafik - Kan T-Centralen med enkla finansiella medel öka sin kapacitet

By conducting interviews, studies as well as scanning the current scientific landscape, this paper examines the opportunities of increasing current capacity within the public transportation system in Stockholm with simple financial means for the benefit of the travelers. The paper focuses on the central station of the subway system and how adjustments of processes carried out in relation to the turnstiles could increase performance within areas of interest, given the preferences of the travelers. The theoretical framework of the paper includes models from the field of capacity management as well as theories related to the pedestrian behavior. Applying these theories and models to the collected data, the paper derives some main conclusions. First of, people using the public transportations system, and especially the subway, consider speed and dependability as the most important performance objectives for the caretakers of the public transportation system, SL and MTR to master.

Vuxenstuderande med funktionsnedsättning

More and more people in our society take part in adult education. In this study, eight students in adult education, the majority with a diagnosis such as ADHD and/or reading- and writing disorders/dyslexia,have been interviewed about their current study situation. The interviews have so party treated topics related to earlier schooling and the future. Earlier studies and available literature is to a large extent written from the perspective of children?s and adolescents? study situation and the question is if this is applicable to students in adult education.

Användning av IT som resurs i sjukvården : En studie om interoperabilitet i vårdens eHälsosystem

Today significant resources are provided to improve the digital work environment within the Swedish healthcare to create efficiency, good work environment and patient safety. Despite this, major flaws are shown by the lack of communication between the eHealthcare systems. This becomes a stress factor among healthcare professionals because of increased administration and decreased physical contact with patients. The purpose of this study is to create a understanding of the concept of interoperability at different levels in the eHealthcare systems. This has been conducted through a qualitative interview study at a healthcare center where the respondents have been describing their digital work environment and the way it works today.

Gemensamt arbete inom IT mellan kommuner ? fördelar och nackdelar. En fallstudie på Göteborgsregionens kommuner

We are currently in the midst of the current information revolution and it is increasinglyimportant to allocate and utilize the resources spent on IT. To accomplish this, one solutioncould be to work together with IT. For municipalities, this can be a complicated process whenyou are dependent on the resources that are given and subject to laws regarding procurement,this places great demands on the Swedish municipalities.One solution could be to work collaboratively with IT across municipal borders, this studyexamines the advantages and disadvantages of this. The study was conducted using interviewand survey of various municipalities in the Gothenburg region. The study shows that there isjoint work across municipal boundaries but that communication sometimes fails, this provesamong other things that some communities feel they have a partnership with a municipality,while the other sees that they have no partnership.With the results from the study are discussed and problematized the current conditions thatexist between the municipalities today, and how they could change.

Dynamisk modellering av VSC-HVDC : En statisk och dynamisk modelldesign o?ver VSC-HVDC fo?r implementering i ARISTO

This thesis treats the subject of a complete steady state and dynamic model of the VSC-HVDC covering both the AC and DC system-side of the converter. The topology of the model is recreated after the scheduled transmission line in the south of Sweden, called SydVa?stla?nken. The topology covers both a simple two terminal connection as well as a multi-terminal one. This model is to be implemented in the power system simulation program ARISTO.

Sensing social media: En studie om sociala medier som informationskälla på en organisation

Titel Sensing social media: En studie om sociala medier som informationskälla påen organisationFörfattare Johan LarssonHandledare Bengt JohanssonUppdragsgivare Current Model Quality, Volvo Personvagnar ABKurs Examensarbete i medie- och kommunikationsvetenskapInstitution Institutionen för journalistik, medier och kommunikation, Göteborgs UniversitetTermin Höstterminen 2013Sidantal 48 (exklusive bilaga)Antal ord 19 365Syfte Att undersöka och kartlägga Volvo Current Model Quality:s arbete med sociala medier idag och utifrån detta samt relevant teori och tidigare forskning ge förslag på framtida arbete med sociala medier sominformationsintag.Metod Kvalitativ respondentintervjuMaterial Sex (6) intervjuer med individer anställda vid Volvo Current Model Quality som till en högre grad använder sig av sociala medier i arbetet. Förinförskaffandet av övergripande information kring sociala medier på Volvo Personvagnar AB och Volvo Personbilar AB utfördes också fyra (4)informantintervjuer.Huvudresultat Sociala medier arbetas med till en högre grad av sex av trettioen anställda inom ?Teknisk support och produktuppföljning?. Dessa sex individers arbete varierar i form och användningsområdena som ses för sociala medier varierar också stort. De sex individerna är innovators för sitt arbete med sociala medier och har sina egna förståelser för vad sociala medier är.

Livstillfredsställelse : Föränderlig på grund av exponering för negativ respektive positiv information?

Livstillfredsställelse är vår kognitiva bedömning av vårt liv. Studier har visat att affekter påverkar vår kognition, samtidigt ses livstillfredsställelse som en stabil disposition. Syftet med denna studie var att undersöka om vår bedömning av vår livstillfredsställelse tillfälligt förändras efter att ha exponerats för negativ respektive positiv information. Hypotesen var att vi uppskattar vår livstillfredsställelse olika högt beroende på om vi exponeras för negativ eller positiv infomation.Satisfaction With Life Scale delades ut till 50 studenter på en högskola efter exponering av negativ respektive positiv information under en föreläsning. Resultatet visade att det inte fanns någon statistiskt signifikant skillnad mellan negativ och positiv information med avseende på livstillfredsställelse.

I samhällets väntrum : Om asylsökande och den långa väntan på att få komma in

The purpose of this case study is to demonstrate how societal mechanisms can impact on asylum seekers and influence their individual identity. The information for this case study was collected through comprehensive interviews with a group of asylum seekers from Söderhamn whereby the individuals expressed their perception of their current situation. From the gathered material we could see a pattern emerge which gave us the framework and the foundation for our theoretical approach. The similarity we discovered when analyzing the material was the powerlessness the individuals experienced e.g. the individuals had no possibility to influence their current situation and worse, it was impossible for the individuals to enter society even when they had the willpower to do so.

Effekter av landskapets sammansättning på humlearters förekomst

The species in the genus bumblebees (Bombus) are important pollinators. In the world there are 250 bumblebee species and there are 34 species in Norway. The purpose of this study is 1) to assess changes in the species composition of bumblebees in twenty different places in Norway that have been inventoried first one time between 1939-1960 and the second time in 2012, and 2) to relate species richness and distributions to current landscape composition with the aid of orthophotos. In this study, I have used regression analyzes on the different bumblebee species that were present or absent at the inventory, using the premises of the following variables: low or high altitude, latitude, longitude and seven different types of land use (farmland, building/plots, open land/pasture, forest, wetland and open or snow-covered ground above the tree line) to see if there was any relationship between each species and the different variables. I have not analyzed what the landscape looked like at the first inventories and therefore we cannot say whether it has changed and if that is why species number has decreased. This would be interesting to study further and to see if there is any relationship between landscape changes and bumblebee?s species decline.

Faktoranalys av EU: s strukturella indikatorer

This paper describes a factor analysis applied at the data of the European Union structural indicators. These are the official indicators for wealth and economic development in the European Union with main use to evaluate the outcomes of the year 2000 Lisbon goals for making the European Union the world?s strongest economy by 2010. The purpose of the data is to serve for comparing and ?learning by doing?-policies, but have, due to size and format, so far been hard to use for a good compare between member countries.

Dammsäkerhetsanalys via stabilitetsberäkningar för Långströmmens kraftverk : En jämförelse mellan olika dimensioneringsmetoder

A detailed dam safety evaluation (in Sweden called FDU) was performed in 2009 by WSP where stability control was performed for Långströmmen power plant with associated spillways. This evaluation concluded that stability could not be ensured, and risk of sliding occurred. The evaluation is based entirely on the recommendations outlined in RIDAS, the power companies guidelines for dam safety, and it is clear that extensive renovations are necessary to stabilize the dam.In this work, the stability will also be checked with guidance through new proposals on guidelines for concrete dams sliding stability, ELFORSK?s report 08:59. This report considered the guidelines in RIDAS as oversimplified, both from an international perspective, but also with regard to the current state of knowledge regarding dam safety.

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