Sökresultat:
5615 Uppsatser om Potential field - Sida 41 av 375
Val av teknik för hastighetsmätning i kallvalsverk
An often encountered problem when implementing a mass flow regulator in a rolling mill is the one with measurement of speed. The most widely used solution is to fit a pulse counter to a wheel that is in contact with the strip. Common problems with this design are for instance scratch marks on the strip and problems with the flatness measuring system. One way of circumventing the aforementioned problems would be a non-contact measuring system. The market of today only offers systems based on the Doppler principle.This report evaluates three different systems for non-contact speed measurement. Important areas in the evaluation have been the ability to operate under normal rolling conditions, integration in existing control system and how well the sensor can be fitted to the rolling mill.
Konsekvenser av ny teknik på en sjukhusmottagning
An often encountered problem when implementing a mass flow regulator in a rolling mill is the one with measurement of speed. The most widely used solution is to fit a pulse counter to a wheel that is in contact with the strip. Common problems with this design are for instance scratch marks on the strip and problems with the flatness measuring system. One way of circumventing the aforementioned problems would be a non-contact measuring system. The market of today only offers systems based on the Doppler principle.This report evaluates three different systems for non-contact speed measurement. Important areas in the evaluation have been the ability to operate under normal rolling conditions, integration in existing control system and how well the sensor can be fitted to the rolling mill.
Den svenska biblioteksersättningen ur författarnas perspektiv
rspective [123][pdf.gif] The aim of this thesis is to study the Swedish Public Lending Right PLR from the authors perspective. I investigate what the Swedish authors of today think about the system for distributing the money in the Authors trust Författarfonden, and in what ways they want to change it. I also try to distinguish the authors thoughts about how the scolarships from the Authors trust are distributed. What kind of authors do they think are favoured when the money is distributed and what kind of authors are treated unfairly. Finally I investigate how the money is shared out in reality by using some of the literature sociologist Johan Svedjedals theories of the distribution, and compare these facts with the authors thoughts about how the money is distributed.
Staden - fara eller frihet för kvinnor?
This report studies how the divergence between men and women is manifested in the physical space and how the representation of room recreates this divergence. Spaces are coded and women have traditionally been associated with private space and men with public space, leading to that the home is encoded as female space and public squares as male space. Thereby women lack a natural place in public space. The National Board of Housing, Building and Planning (Boverket) wants to change this situation by enforcing safety-creating measures based on gender equality theories.I have studied what potential risks the project initiated by Boverket as well as discuss the potential problems with representation. Can representation be used without freezing the space? I also search for methods for working with a gender perspective without reproducing gender stereotypes and roles and avoiding encoding the private as female and public as male? Also I use a public seminar with urban planners, artists and architects to retrieve how we work with these issues today.I conclude that city planning needs to incorporate new strategies of thought that does not divide space, e.g.
"Jag skulle vara där en natt och så blev det 14 år" - en kvalitativ studie om hur socialsekreterare förhåller sig till sammanbrott i dygnsvården av unga
Swedish and international research indicate that many measures made by social services, concerning children and adolescents who are taken from their homes to an institution, are interrupted prematurely for different reasons. The word "breakdown" is used when a measure granted by the social service is broken before the projected time has passed. Research concerning how social service employees are influenced by measures being interrupted prematurely is very limited. The aim of this qualitative study is to examine how social service employees in Malmö are influenced by the premature interruption, "breakdown", of measures concerning children and adolescents who are taken from their homes to an institution. The theoretic basis for the study is Symbolic interactionism, especially the theory of Stefan Morén concerning conditions for change.The study is based on interviews with social employees, relevant material from research in this field and an examination of the theoretical basis.
Folkets park i Lund : sedd ur ett landskapsvetenskapligt perspektiv
Stadsdelen Väster i Lund har dålig tillgång till grönytor och en tydlig avsaknad av ett ordentligt stadsdelscentrum. Här finns dock stadens gamla Folkets park med potential att bli en grön mötesplats. Syftet med detta arbete är att göra en analys av Folkparkens potential och se till hur parken skulle kunna bli en mer attraktiv och funktionell samlingspunkt. Delvis baseras arbetet på empiriskt material i form av observationer och en enkätundersökning för att få fram vad Folkparkens besökare har för vanor och önskningar för området delvis baseras arbetet på kommunala dokument, tidigare inlämnade förslag, en jämförelse med andra fungerande parker och tidigare gjorda arbeten som berör planering av stadsrum vars teorier jag applicerat i mitt arbete. Resultatet av mitt arbete är utformat som en sammanfattning av inhämtat underlag, vilken jag sedan baserar min diskussion på.
Är plöjningsfri jordbearbetning bättre än konventionell plöjning? :
The background of this study is the fact that it nowadays is more common to grow wheat after wheat. Usually we plow every autumn to remove the straw, and we wanted to study the effect of alternative methods to do it. We have done this experiment to answer the question if no tillage is better than conventional plowing. The results of the field experiment indicate that there is a link between plant establishment and the choice of equipment, but also a higher weed pressure in experimental plots with only ground tillage. The equipments which left much straw on the top of the ground the problems with fungi were more severe.
The effect of new raw materials on pellet prices
As demand for renewable energy is increasing rapidly, the market for biomass pellets
is expected to continue to grow in the near future. Most of the new raw materials that
are discussed for pellet production have one thing in common; the production costs
will increase compared to using traditional raw materials such as sawdust and planer
shavings. The aim of this thesis is to investigate to what degree increased use of new
raw materials for pellet production will affect the general pellet prices in Sweden and
to survey what plans Swedish pellet producers have concerning new raw materials.
To investigate the raw material situation of the Swedish pellet producers an industry
survey was performed. Literature studies were also made on previous research in the
subject field. Calculations of the production costs for pellets were done for the raw
materials sawdust, wet sawmill chips and energy wood respectively.
New raw materials are already used by the large-scale pellet producers in Sweden.
Solenergi och värmelagring i kvarteret Lagern
Humanity stands before a huge challenge to lower its emissions of carbon dioxide and its use of energy at the same time as the global population is rising and the developing countries are being industrialized. A lot of newly built buildings are due to this challenge, designed to be more energy efficient but also use renewable energy resources instead of pollutant fossil fuels .Solar energy is one of the purest forms of energy that exists in abundant amounts, which is why it is most likely that it could come to play a major part in the future energy market. The main purpose of this report is to investigate the possibility to implement a sustainable energy system with solar thermal heat and heat storage as main sources of energy in the neighborhood ?kvarteret Lagern?, which is the area where the old football stadium ?Rasunda Stadion? was located. New developments within different heat storage techniques have opened up new approaches to enable buildings an all year round heat supply from solar energy. This report will focus on heat storage in boreholes. At the present here is only a preliminary plan of how the neighborhood is supposed to be designed.
Smålands Musikarkiv: att samla och förmedla
This study examines the cultural factors which necessitated the establishment of The Music Archives of Småland in 1991 in the city of Växjö. I wanted to know the importance of the local music tradition and the role of those people who worked to create an institution such as this. In order to do this I interviewed the chief collector of early folk music, Magnus Gustafsson, and made use of literary sources to devise questions and evaluate the results of the exercise. In this study I have made use of a model of a musical culture in a society, created by Lundberg and Ternhag, based on the theory of cultural fields by Pierre Bourdieu. According to this model, the stature of a musical culture gives different forms of musical expression certain roles, but these roles can be remodelled, reflecting perhaps political or ideological influence.
Akademiska studier - En väg in på arbetsmarknaden?
Our society has become a society of knowledge. The answer to the question of how to reduce unemployment has become more and more unified: education. In this case, higher education, meaning college and university. With this disposition in our society, how does it affect the students? How does this change of society and our universities affect the students of these institutions?
In this study we have chosen to examine the choices of students in universities in several Swedish cities.
Debatten kring en litterär kanon: En diskursanalys av artiklar på dagstidningarnas kultursidor
Literary debates about canon occur regularly. In the summer of 2006 such a debate took place in Sweden. The aim of this Master thesis is to examine the debate to identify the different discourses and what they reveal about ideas concerning the role of literature in society. The empirical material used for the analysis consists of 46 debate articles from three important newspapers. The combined theory and method applied is the discourse analysis described in Ernesto Laclau?s & Chantal Mouffe?s discourse theory.
The mobility of employees within the EU, and the Eures Network
En sammanfattning av uppsatsen på maximalt 8000 tecken.This thesis is mainly dealing with the mobility of the employees within the borders of the European Union. Legislative framework from the EU is favourable and the Commission has set as one of it goals to promote the migration. Globalisation trends and contemporary business concepts need people who are mobile on the other hand. But migration numbers are still low within Europe. The purpose of this thesis is to find out how much the legal uncertainties, and the different culture mentality in the workplace of another country act as barriers in the minds of the people who wish to work abroad.
APU:ns betydelse för elevernas studier på hotell- och restaurangprogrammer
The usage of location in mobile applications is becoming more explored as a field, but the ability to implement location-specific data has often been limited and the applications mainly focusing on having information location liked. This thesis aims to explore how to make a mobile application that lets users share and take part of each other?s memories. As well as finding an appropriate balance between location based and location linked messaging..
Social taggning: En studie av en webb 2.0 tjänst i OPAC
The aim of this thesis is to study social tagging in an OPAC by looking at the tags of Ann Arbor District Library?s catalogue. In this thesis I analyse the possibilities of social tagging. The main questions to be answered are what is the distribution of tags in different categories, what are the differences between fiction and non-fiction and how do the social tags differ from the terms of the professional indexing practice. Studying 500 tags I find that subject matter was the most frequent category for tags assigned to fiction and non-fiction.