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2603 Uppsatser om Constant current regulator - Sida 5 av 174

Varför och hur integreras medier med svenskämnet? : En kvalitativ studie av tre pedagogers uppfattning om inkluderande arbetssätt

This essay is about why and how the media is integrated with Swedish as a subject. The purpose of the study is to investigate if the teachers who use different media when teaching Swedish consider that this pedagogy develops the students? learning. I also aim to find out if there are any differences and/or similarities between the teachers.To fulfil the purpose I have done a qualitative study with three teachers who work at a school. I have focused on following issues: How, when, where and why do the teachers use media when teaching Swedish?The investigation shows that media is popular today and it is becoming more so all the time.

Quartzene i gips : Densitet och hållfasthet

A substation must be properly protected against lightning and other external effects to the equipment in the station or staff, for that we use relay protection. They should also protect against internal errors which may occur as ground faults. There are different types of protection relays, but most common are overcurrent-, distance-, residual current- and differential protection.The purpose of this thesis was to deepen our knowledge of relay protection and to use the theoretical knowledge we got from the university studies in the work process. In the process we discovered which parameters were the most essential and calculated these for all relay protections on the substation. We also carry out a comparison between two brands of relay protection, ABB and Alstom.During our work we will test and simulate the over-current relays in a program called NEPLAN, the program will also calculate the fault currents.

Storjuktan ? Rekonstruktion av ett sekels kvicksilverbelastning. : En undersökning av kvicksilverkoncentrationer i daterat bottensediment.

The aim of this study was to examine the current and historic mercury(Hg) load of the lake Storjuktan due to its recent exposure to a local potential source of Hg in form of the Sulphide mine Blaikengruvan(2006) and an earlier potential sources of Hg-load, the damming of the lake(1960s). Sediments were extracted using a HTH-sampler, freeze-dried, and analyzed for tot-Hg, LOI and activity of 210Pb and compared to samples extracted prior to the opening of the mine(2006). Constant initial concentration (CIC)-dating model was used for dating the samples. Low levels of Hg (100ng/g) were found throughout the lakes sediment. The highest levels of Hg(220ng/g) was detected at a depth of 4-5cm dating back to the mid 1970:s, suggesting that increased levels of atmospheric Hg rather than damming of the lake has caused the increase of Hg.

Regulatory approaches? influence on environmental agencies internal quality

The increasing public concern regarding the government?s priorities in spending public resources puts pressure on public organisations to address quality issues in their practice. In United Kingdom both BRTF (Better Regulation Task Force) (BIS, 2005b) and the Hampton report (BIS, 2005a) highlighted management and quality problems in public organisations in UK. These reports revealed obstacles within institutions? intent to offer recommendations and appropriate solutions for agencies working with legal enforcement and control.

Framtidens bibliotek? : Dieselverkstadens bibliotek AB

With background in the acknowledgement of the current period of major change in the characteristics of traditional Swedish foreign policy, considering the membership in the European Union, as well as the new contextual scenarios that Sweden has been situated in after the end of the cold war, this thesis aims at scrutinizing the Swedish Foreign Policy from 1991 to 2010. The purpose of the thesis is further to localize continuity and change in the ideas which Sweden has explicitly stated in its foreign policy. Based on the theory of institutionalism, the thesis also aims to bring forward plausible explanations built on the main empirical findings. This has been done by identifying different types of goals and means within realism and liberalism as well as categorizing each theory within three ideal types.The chosen research method has been a qualitative text analysis with focus on an ideational analysis. The material on which the descriptive analysis is based upon is constituted by the annual statements of government policy in parliamentary debates on foreign affairs.The results of the thesis show that the ideas that are related to solidarity, consensus and active foreign policy are constant through the period of examination.

Reglering av en biologisk reningsanläggning

Rapporten beskriver arbetet med att ta fram en regulator för dosering av närsalter i en biologisk reningsanläggning. Anläggningen som renar vatten med mikroorganismer behöver extra tillsatser av kväve och fosfor för att effektiviteten ska vara så hög som möjligt. Det har visats att variationer av föroreningar i avloppsvattnet kräver olika mängder tillsatser av kväve och fosfor. En simuleringsmodell för anläggningen tas fram för att användas till en jämförelse mellan olika regulatorer. Simuleringar visar att man kan förbättra regleringen genom att använda sig av framkoppling av mängden föroreningar i inloppsvattnet..

Exempel på användning av LabVIEW vid : mätning, reglering och signalbehandling

Arbetet handlar om hur man med hjälp av LabVIEW 8.0 kan lösa olika uppgifter. Uppgifterna löses med hjälp av ett DAQ-kort. DAQ-kortet gör det möjligt att mata in signaler, som sedan behandlas efter behov i programmet och därefter skickas ut genom DAQ- kortet till olika komponenter som man vill styra. DAQ-kortet klarar att behandla både analoga och digitala signaler. LabVIEW 8.0 och dess historia, DAQ-kortet samt de olika processerna/uppgifter beskrivs mer utförligt i arbetet..

Framtagning av reläskyddsinställningar för en transformatorstation

A substation must be properly protected against lightning and other external effects to the equipment in the station or staff, for that we use relay protection. They should also protect against internal errors which may occur as ground faults. There are different types of protection relays, but most common are overcurrent-, distance-, residual current- and differential protection.The purpose of this thesis was to deepen our knowledge of relay protection and to use the theoretical knowledge we got from the university studies in the work process. In the process we discovered which parameters were the most essential and calculated these for all relay protections on the substation. We also carry out a comparison between two brands of relay protection, ABB and Alstom.During our work we will test and simulate the over-current relays in a program called NEPLAN, the program will also calculate the fault currents.

RCC-Jordfelsskydd, mätmodul för övertonsanalys

The majority of all power cuts that affects individuals and communities are caused by earth faults on the power transmission lines at 10kV and 20kV level [1]. If these power cuts could be eliminated, less disturbances and interrupts would lead to large amounts of money savings.Swedish Neutral has developed such a protection system. When an earth fault occurs power is injected into the neutral point of the transformer. The RCC (Residual Current Compensation) protection calculates a compensation current exactly 180 degrees out of phase to the fault current. Doing this, the voltage at the fault location becomes very close to zero, without affecting the power transmission.The protection system can only compensate automatically for the fundamental frequency (50Hz), and manually for the 3rd, 5th, 7th and 9th harmonics.

Planseparerad spårtrafik i Göteborg

The City of Gothenburg has an urgent need to upgrade its public transport. The capacity of its light rail transit (LRT) has reached maximum capacity within the inner city limits years ago. The construction of an underground metro will be very expensive and time consuming due to the soft clay beneath the city. The apparent need of developing another type of mass rapid transit (MRT) is urgent. An elevated metro have turned out to be a success in Greater Vancouver, but is it possible for the system to operate well in Gothenburg with its narrow streets and current land use; will its route coexist with the current LRT or will the noise disturb people too much?.

Chefers emotionella kommunikation och dess relation till personalomsättning

It is now increasingly common for organisations to work actively with HR issues. Furthermore, it is a constant top priority for organisations to remain profitable. The purpose of this study was to investigate whether so called soft HR values, as manager?s communication skills, has an actual impact on hard values in terms of costs for the organisation. Leadership is largely characterised by emotional communication, which together with personnel costs were the main focus of the research.

Kommunikation i dubbel bemärkelse : Enkätsstudie av barnfamiljer och SL:s digitala plattformar 

As a result of a successful human development around the world an extensive urbanization of societies are taking place that are networked in various ways. In these networks, increased travel and digitization are central where individuals and organizations converge in a constant and immediate wireless and mobile technology flow. An example of this is Stockholm and its public transportation company Storstockholms Lokaltrafik (SL). Although most participate in most of the network society, SL is struggling with an audience that seldom travel with them: families with children. We intended to find out how the communication of SL´s digital platforms could get families to travel more with public transportation.

Att identifiera smärta hos personer med demenssjukdom : En litteraturstudie i omvårdnad

Background: Pain can be a constant problem in many older people's daily life, associated with particular physical and social disability, depression and poor quality of life. Dementia diseases are often associated with old age. Communication difficulties are one of the consequences of the disease, which clarifies the role of nursing staff in detecting and assessing pain. Objective: The aim was to compile knowledge about how nursing staff can identify pain in people with dementia. Method: A systematic literature review, where data were collected through manual and database searches.

En ständig balansgång : En komparativ studie kring jämställdhetsarbete på en manligt dominerad respektive en kvinnligt dominerad arbetsplats

This study, entitled A constant balance ? Gender equality work in an organisation dominated by women and an organisation dominated by men focuses on attitudes towards gender equality issues in two organisations ? one that is dominated by women and one that is dominated by men. The study is based on the Doing gender theory, which primarily means that gender is something people do, it is constantly changing and it depends on the surrounding context.The organisations in the study are both working with gender equality issues, but the attitudes towards gender equality work are ambiguous. The primary gender equality issue in both organisations is to increase the number of employees of the non-dominant gender. The gender equality work in both organisations is formally supported but it is also being met with informal resistance.

Artikelbundna instruktioner : Layout och rutiner

This thesis is carried out on behalf of watermixer manufacturer Ostnor AB in Mora.The thesis deals with the area of Article Bound Instructions (ABI) at the company'sassembly department, regarding the layout and management routines involved withthese instructions.In the current situation there are problems with no uniformity in the manner in whichthe ABI is written, then referred to both the civil structure, images and specificityrates in the text.Another problem is that operators do not make use of the ABI that are available inthe current situation, and that there are no clear procedures for who has theresponsibility to write, update and change these ABI.During this work has several people that were identified as key personnel of thethesis held in order to get a handle on how the current situation of the variousobjects of the work looks like, and to examine different desires about the future ofthese should look like from the different subjects perspectives been interviewed.During the work, a number of deficiencies, including that the current program that isused to write the ABI, Lotus Notes, do not possess near the prerequisites for being asimple program to deal with when writing the ABI, which is a condition since wishesare about to put the responsibility for the ABI generation to the departmentsoperators, since their main task is to assemble and do not bother with a program in acomputer.The result of this work has generated new layout and structure of the ABI, designedto be used continuously in the assembly for evaluation, routines regardingresponsibility of the ABI for the Department of Production Engineering (PT),procedures for how the ABI should be written regarding amount of detaileddescriptions in the text and use of pictures.In addition, proposals for further work and improvements has been developed basedon experience during the work and presented at the end of the report..

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