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3586 Uppsatser om Current feedback operational amplifier - Sida 32 av 240

Utvärdering av fjädrande statorfötter : Nytt koncept i vattenkraftgeneratorer

This thesis is an evaluation of a new design concept for statorfeets in Gallejaur hydro power plant. Founder of the work is Vattenfall AB Vattenkraft. During the 70- and 80´s nuclear power began to be phased in to the Swedish grid, which meant that hydropower became an important source of rules. The generators began running in so called intermittent operations instead of basic operations, which meant 300-600 start/stop per year instead of one-ten numbers start/stop per year. In order to deal with the thermal forces that arise at every start and stop suppliers began to mount so called sliding joints, which is to take advantage of these forces and maintain the stator shape.

Förstudie av Fysisk aktivitet på Recept. : Ett projekt mellan vårdcentralen Ankaret och Friskis & Svettis i Örnsköldsvik - ur ett hälsoperspektiv

Förstudie av Fysisk aktivitet på Recept- ett projekt mellan vårdcentralen Ankaret och Friskis&Svettis i Örnsköldsvik. - ur ett hälsoperspektiv (Pilot study of exercise on prescription, a project between the health center Ankaret and Friskis&Svettis in Örnsköldsvik - from a healthperspective) Bachelor Essay in Swedish. Umeå: Umeå university, Department of Education.Physical activity is a growing problem in Sweden. To improve the situation a working method called FaR was developed. FaR is physical activity on recipe that primary health care providers can prescribe their patients.The aim of this study was to investigate how a project in which, FaR patients are prescribed by the health center to a wellness facility may succeed.

Energieffektivisering i kommun

AbstractThe Municipality Council decided in 2010 to develop a comprehensive energy efficiency strategy with financial and methodological support from Energimyndigheten (The Swedish Energy Agency). The strategy should include 3 major parts: an inventory of the 2009 energy use defining the current situation, the 2014 and 2020 goals for energy use, and an action plan for goal achievements. According to Energimyndigheten, the strategy must include all municipal administration premises, vehicles, and all majority-owned companies (as Laholmshem, the municipal housing company).The report describes the inventory work in order to obtain the 2009 energy use and the sources of information used. The inventory values are used as the base year values for the 2014 and 2020 goals. The inventory showed that information about the vehicles is dispersed in the municipal administration and no clear structure exists with respect to mileage and fuels used.

Inställning till och val av livsmedelsprodukter bland personer som är över 55 år

Data retrieved from airborne laser scanning represents a new source of forest data. Today, the technology has matured so that it can function in an operational environment. The aim of this study was to compile areas of application of laserdata in forestry. Moreover to analyze costs and accessibility of laserdata. The goal was to provide private forest owners information to support assessments of possible benefits of laserdata.

Upplevelser hos socialsekreterare som arbetar med barn och unga inom myndighetsutövning : - En studie av kritiska incidenter

AbstractWorking with child and youth welfare is one of the most difficult challenges a social worker might face in the field of social work. Those who work with child and youth welfare are more exposed to stress and burnout than other comparable human service occupations. Research links the prevalence of stress and burnout to several key variables, such as demographics, working conditions and personality factors. In contrast, even though social workers in this field face many negative work-related problems they report a high job satisfaction. The aim of this study is to examine how uplifting and straining experiences affect social workers, who work with child and youth welfare, through the use of The Critical Incident Technique and interviews.

Samordnad varudistribution : Jämförelse mellan två logistikmodeller med nuläget i Sundsvalls Stenstad

As the cities are becoming more crowded, the urban distribution has become a major logistical challenge. Some commonproblems in the inner cities arelimited accessibility and idling. Many of Sweden's municipalities are above the limit values for PM10limit set by the EU.Sundsvall is one of these municipalities and has the vision to create a sustainable city and region. Sundsvall LogistikparkAB is part of an EU project, SMARTSET, which is collaborationbetween several cities in Europe. SMARTSETSundsvall is about to develop a market-based sustainable model for city logistics.

Feedback, bearbetning och formativ bedömning i skrivprocessen - Elever i årskurs 6 skriver faktatexter

Detta examensarbete undersöker hur lärare och elever använder sig av formativ bedömning i skrivprocessen för att bearbeta och förbättra elevtexter. Utgångspunkten för detta arbete har varit att ta reda på hur elever tar till sig den formativa bedömningen i den fortsatta skrivprocessen och på vilka grunder lärare gör sina val av kommentarer i den formativa bedömningen. I undersökningen har jag följt fem elever i årskurs 6 och deras lärare under fem dagar för att främst se hur de arbetar i skrivprocessens sista fas där bearbetningen av texten sker. Jag har observerat lärarens och elevernas arbete i skrivprocessen samt intervjuat läraren och de fem eleverna. Elevtexterna använder jag som konkret exempel på vilka kommentarer läraren ger till eleverna och vilket fokus hon lägger i sin bedömning samt hur eleverna bearbetar sina texter utifrån kommentarerna.

Från ett socialt problem till kult : En studie av raggarkulturen förr och nu

Youth culture and social problems associated with youth groups have existed for decades. We have chosen an explorative case study design to highlight young people's revolt against parents and society and how society has dealt with social problems of youth and how those were perceived. ?Raggare? were considered a major social problem in society. The material in the study comes from eight qualitative interviews and literature of previous research of the current youth culture.

Utvärdering av Hultdins prototyp för portabel bro (drivningsbro) :

Stronger demand has been put on forestry to show environmental considerations during harvesting. This is especially for crossings of brooks with sensitive elements and great care should be observed when they are to be crossed during harvesting by logging machines. For that reason Hultdins has constructed a portable bridge that can be used for those occasions. The bridge has been developed in accordance with wishes from SCA forest, since they have a great deal of brooks in their forests and in private forests from where they buy part of their wood supply. The aim for this report is to investigate if this portable bridge can be of interest for the forestry market. The research has been made at SCA skog in Medelpad and Norrskog in Medelpad.

KRAMI ? EN ARENA F?R F?R?NDRING En Kvalitativ Studie om Samverkan som F?rebygger ?terfall i Brott

Till f?ljd av den utmaning som Sverige st?r inf?r g?llande den v?xande kriminaliteten v?cktes en nyfikenhet kring ?terintegreringsprocesser som ska f?rebygga och minska ?terfall till brott. Med ett pedagogiskt intresse syftar denna studie d?rmed till att unders?ka det enskilda Kramikontorets centrala roll i ?terintegreringen f?r klienter till arbetslivet. Krami ?r en arbetsmarknadsinsats best?ende av tre samverkande myndigheter, vilka ?r Kriminalv?rden, Arbetsf?rmedlingen samt kommunen. Studien ?mnar till att framst?lla de anst?lldas perspektiv p? Krami ?s arbete f?r att kunna synligg?ra hur v?l verksamheten upplevs bidra till ?terintegreringen till arbetslivet.

Informera, interagera och engagera - en kvalitativ studie som undersöker hur tre svenska kommuner bedriver sin kommunikation på Facebook.

Syfte och frågeställningar: Syftet är att undersöka och jämföra tre kommunerskommunikation på Facebook, men också fenomenet Facebook och dess komponenteri form av exempelvis gilla-markeringar. Studien bygger på två huvudfrågor.1. Vilken typ av kommunikation bedrivs via kommunernas Facebooksidor?2. Hur skiljer sig kommunikationen åt mellan de tre kommunerna?Metod och material: Intervjuer och netnografiska observationer.Huvudresultat: Facebook är en viktig kommunikationskanal för kommunerna.Intervjuerna visar att mycket av det som kommunernas kommunikatörer säger sigkommunicera stämmer in på det som de netnografiska observationerna visat och attde huvudsakligen lever upp till sina uttalade syften.Något som kan konstateras är att oberoende av hur många följare eller hur mycketfeedback en kommuns Facebooksida får så gör det ingen större skillnad i hur de bedriverkommunikationen.

Mätning av axiella magnetiska läckflöden i vattenkraftsgeneratorer

This thesis describes a method of measuring axial magnetic leakage flux in an operational hydropower generator. Axial magnetic leakage flux is the magnetic flux at the ends of a rotating generator, which goes through the stator parallel to the rotor axis. This flux can cause circulating currents in the stator iron, giving rise to losses, and can in the worst case overheat a generator, causing it to melt down. To measure the axial flux, and how it affects the generator temperature, a measurement system was constructed on behalf of Vattenfall. The system consists of search coil sensors and a signal-processing unit with amplifiers and active filtering.  To confirm the behaviour of the axial leakage flux and the functionality of the measurement system, a test installation was made.

Ung? Var god dröj! En diskursanalys kring ungdomsarbetslöshet och fördröjd etablering på arbetsmarknaden

Youth unemployement in Sweden is at an all-time high, a fifth of all university and college students live in poverty and the number of young on welfare is increasing. This study attempts to answer the question of how youth deprivation has been made possible as a consequence of political action, focusing on youth unemployment. I critically examine the role of the Swedish government, the Swedish Labour Organisation (LO), and the various government departments through text analysis, in order to answer the question of how the current discourse on youth position in the labor market. Because youth unemployment is not an isolated phenomena the analysis covers several policy areas, such as education policy, labor market regulation and housing policy. I use discourse theories drawn from Laclau and Mouffe to expose how language is used as an instrument of political power. I conclude that the current situation is a result of policy choices where the young have fallen behind due to lack of political organization. Their situation is not problematized to the required degree and is often explained on an individual level rather than on a structural level. .

Elektronisk publicering: vetenskapliga dokument med åtkomst via webben

The aim of this master thesis is to study electronic publishing, and our main purpose is to examine different strategies of publishing such as: markup languages and page description formats. We examine in what context these strategies are used for publishing, when it comes to scholarly documents produced by Swedish universities and university colleges during the spring of 2002. We apply a sociological perspective as the theoretical framework for to identify the main purposes for scientists to publish their work. We also discuss properties belonging to the different formats: XML, HTML, PDF and PostScript. By doing a content based survey of the websites at Borås University College and at Gothenburg University, we have found that the most common form of electronic publishing, regarding scholarly documents, are lists with bibliographical information on publications and presentations of current research.

Digital Kommunikation inom Radiologi ? En litteraturstudie angående för- och nackdelar

Bakgrund: Röntgensjuksköterskor arbetar inom en högteknologisk miljö, där utvecklingen har gått snabbt. När röntgensjuksköterskans arbete övergick till digital arbetsmiljö och dataskärmsarbete, blev kommunikationen mellan radiologer och röntgensjuksköterskor hämmad och arbetsmiljön förändrades. Nya ansvarsområden tillkom och lämnade utrymme för fler självständiga arbetsuppgifter. Syfte: Syftet med detta arbete är att kartlägga vilka för- och nackdelar som den digitala kommunikationen har medfört för röntgensjuksköterskor och radiologer. Metod: En litteraturöversikt genomfördes via systematiska sökningar i databaserna Cinahl, PubMed och Scopus.

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