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2293 Uppsatser om Open-source - Sida 46 av 153
Småskalig säsongslagring av solenergi för uppvärmning av bostäder : Simulering av lagerutformning och konsekvensen av adderade uppvärmningsbehov motsvarande en pool och ett atrium
The sun is a huge energy source with great potential of providing energy to the heating of homes and other buildings in an environmentally sustainable manner. In order to provide buildings with energy from the sun it is necessary to transfer the energy supply over time to when the demand arises. By storing the heat in a seasonal storage, solar energy from the summer can be used in the winter when the demand for heating is greatest.Today's existing plants are mainly in Europe and particularly in Germany. These facilities are designed to supply heat demands greater than 400 MWh and covers about 40-50 % of this need which consists of energy for space heating and domestic hot water. How much of the heat demand that is covered, the solar fraction, is partly due to losses from the storage which in turn is connected to the surface area of the storage.
Fordonsgas från deponier : en potentialstudie i Biogas Öst-regionen
The demand for biogas as vehicle fuel has risen sharply and there is a great need for increased production. A possible addition of vehicle gas can be produced by upgrading landfill gas which is formed by degradation of organic waste. This thesis investigates the potential of producing vehicle fuel from landfill gas in the region of Biogas Öst.In 2008, an amount of 32 million Nm3 landfill gas was extracted in the region. This level can be maintained for another ten years if the efficiency of gas extraction is improved. The annual production will decrease with time since landfills aren?t allowed to receive more organic waste.
Motiven bakom en investering i crowdfunding
It is well known that small businesses and entrepreneurs in the initial phase has difficult to gain access to external capital and bank loans. With the background of the problems that entrepreneurs face when they ask for capital has since the financial crisis the phenomenon of crowdfunding developed and evolved. Crowdfunding is an alternative source of funding for entrepreneurs to fund their ideas through small or medium-sized capital contribution from a larger amount of investors, often investors who have any kind of relationship with the entrepreneur or to the very idea. This study examined the factors that motivate and guide an investor's decisions when they select their projects. The results of the study show that the motives of the various existing forms of crowdfunding is big.
Skönlitteratur ett läromedel? : - Sju författare och en litteraturpedagog resonerar om skönlitteraturens betydelse i skolan
The essay concerns the role of fiction in school. The research questions is; what is ?readable?, what does the authors think of teacher's task to develop students' literacy skills through fiction and how do the authors think of the teachers' task of using fiction in school. The questions give a basis that describes the role of fiction in school today based on the authors' perspective. We have chosen to use the open surveys as a method.
Att fylla tidningarna med kris : En studie av kriskommunikation, nyhetsmedier och deras källor
The purpose of this study is to discover and explain the influences of media coverage of organizational crises on crisis communication, and vice versa. The study also shows how mediated crises develop, and how media framing and news sources affect this development.Carried out as a case study of three Swedish mediated crises, the methods used are quantitative and qualitative content analysis of media content from four Swedish newspapers and four organizations' press releases from the studied crises.Mediated crises develop through their specific pattern regardless of, but not independent from, the organizations' crisis communication. The crisis communication is used as an elite source in media reporting from the crises, but it can not control the mediated crises. However, it influences framing, and the possibilities to influence media reporting are better in the pre-crisis phase and the culmination..
Barns upplevelser av högläsning och boksamtal
What drove me to write this paper is the will to examine if there is a philosophically and scientifically viable alternative foundation for an objective morality other than what we like to refer to as "God". The American philosopher and neuroscientist Sam Harris presents in his book The Moral Landscape a thesis for an objective morality based on science in which he states that science can determine human values. The purpose of this paper is to perform a theoretical trial of The Moral Landscape, examining Harris' thesis and it's relations to the philosophical obstacles that stands in its way, these being mainly the famous philosophical principle "Hume's Law" and G.E. Moore's "Naturalistic Fallacy and Open Question Argument" and thus will serve as my main theoretical foundation. The results of my study was not conclusive since Harris in fact doesn't succeed in bridging the gap between facts and values on a scientific ground.
En sen ADHD-diagnos : Individers upplevelser av en ADHD-diagnostisering i vuxen ålder
The purpose of this study was to investigate how an ADHD diagnosis late in life as an adult can have effected childhood and adult life. It is a qualitative study executed by interviewing four adults, two men and two women. The individuals in the study had all experienced difficulties in their childhood and in school and had all felt different from the rest of the ambient. None of the interviewees were on medication for ADHD but most were open for trying. Support from school or other settings had been minimal.
Ny princip för spänningsreglering i Fortum Distributions mellanspänningsnät i Stockholm.
The voltage regulation in Fortum Distributions medium voltage network in Stockholm does not work satisfactory. This results in too high distribution voltages with many customer complaints as a consequence. The reason is the model responsible for compensating for voltage drops in the distribution network. Despite several adjustments Fortum has not been able to find the source of the high voltages and has therefore appointed an investigation in the form of a thesis work.The aim of this investigation is to locate the error and to produce a proposal regarding the solution of this error using the existing system, common industrial knowledge, state of the art research and the option to use voltage readings from the different substations.The conclusion of this master thesis is that the largest contribution to the high voltage levels is made by the large compensation for distribution loses. Furthermore an additional error in the model has been found.
Landsbygdsutveckling i Östergötland : - tre aktörsperspektiv och deras konsekvenser för landskapet
Rural development in Southeast Sweden- three different views and their consequences for the agrarian landscapeThis paper deals with the future for the rural areas of the southeast province of Östergötland, Sweden. The aim is to unveil, analyse and compare different views on rural development and their consequences for the agrarian landscape. Three views are considered, namely that of the different levels of Governments and their departments, that of the farmers and landowners and, finaly, that of the inhabitants of the rural areas.Differences in the views upon rural development is reflected in differences in the ways of thinking of landscapes. Is the open, and actively cultivated, landscape the ideal for all? Who is to decide what needs or ought to be done to achieve certain desired values and/or goals ? and who pays for it? The one thing that is, and should be, clear from the beginning is that all development, whether positive or negative in an area, bears consequences for the landscape.
Näringsretention i återskapad våtmark på betesmark : studier av en mad vid Bornsjön
It is important to construct or recreate different types of wetlands and study their retention of nutrients, since knowledge of their effectiveness in this matter is poor. In 2003 a wetland was constructed on an old meadow on the western shore of Lake Bornsjön in central Sweden. The main purpose of the wetland was to reduce the amount of phosphorus entering the lake, which is the back-up water supply for Stockholm when the city cannot obtain water from Lake Mälaren. Large areas around Lake Bornsjön consist of agricultural land and the nutrient concentrations in the inflows to the lake are usually relatively high (approx. 1 mg/l total nitrogen and 0.05-0.1 mg/l total phosphorus).
FACEBOOKFLICKOR : En kvalitativ studie om unga flickors påverkanav sitt eget och andras Facebook-användande
Title: Facebook girls, a qualitative study of social medias and Facebooks impact on young girlsNumber of pages: 32Author: Mirja LarssonTutor: Amelie HössjerCourse: Media and Communication studies CPeriod: Autumn 2010University: Division of Media and Communication, Department of Information and Media,Uppsala UniversityPurpose/aim: To discover any possible difference between young girls and older girls in their wayof using Facebook.Material/method: Personal interviews, literature, electronic sources, Internet sources.Main results: The younger girls are not as aware as the older girls of their exposure on Facebookand the possible down-sides of their frequent Facebook-usage. Young girls in general use Facebookas a source to form their identity.Keywords: Facebook, identity, young girls, Cooley, Elza Dunkels, Altman and Taylor.
"Dom är ju också människor. Precis som du och jag." : En kvalitativ studie om socialsekreterares syn på långvarigt narkotikamissbruk
The aim of this study is to investigate a number of social worker views on long -term drug abuse and how they feel that this group of individuals should be treated. Our purpose is also to examine these social worker discretion in terms of decision-making under the Socialtjänstlagen (SoL) and Lag om missbrukare i vissa fall (LVM ).We conducted two focus group interviews and assumed a number of open questions. Our empirical data have been categorized by the study's purpose and issues and by recurring themes in our individual stories.Our results shows that all social workers believe that one should always look at the big picture in estimates related to drug users. They also believe that the process of long -term addicts occasionally feels hopeless. Social workers felt that their room for maneuver in terms of decision-making was fairly limited.
Uppdelning av ett artificiellt neuralt nätverk
Artificiella neurala nätverk (ANN) har många användningsområden inom
datavetenskap. Några av dessa är mönsterigenkänning, robotik, processkontroll,
optimering och spel. Detta examensarbete kommer att handla om hur en alternativ
lösning på den traditionella arkitekturen av hur ett neuralnät kan se ut. Jag
kommer att undersöka om man kan ta ett stort och komplext neuralnät och bryta
ned detta till mindre neuralnät utan att förlora kvaliteten på botarna i en
spelmiljö kallad Open Nero. Detta för att försöka minska beräkningshastigheten
av neuralnäten och förhoppningsvis även göra så botarna lär sig ett bra
beteende snabbare.
Mitt examensarbete kommer att visa att min lösning av arkitekturen för ett
neuralt nätverk inte fungerar speciellt bra då botarna inte lärde sig
tillräckligt fort.
En fallstudie om hushållens källsortering i Augustenborg (A Case Study on Waste Management in Augustenborg)
Hållbar utveckling är en vision som hela världen eftersträvar att uppnå. Hushållsavfallshanter-ing är ett sätt för att uppnå en hållbar samhällsutveckling. Bra kunskap, information och sam-verkan mellan olika aktörer är ytterst nödvändigt för att kunna uppnå en hållbar samhällsut-veckling. Syftet med fallstudiet är att kartlägga en del av stadsdelen Augustenborg i Malmö för att se över hur hushållsavfallshantering fortskrider. Det är även vårt syfte att identifiera möjligheter och hinder för en ökad källsortering i området.
REX DVD : Om framställningar av kung David spelande på stränginstrument i bilder från tidigmedeltida manuskript
The purpose of this work was to investigate the early medieval view of the Bilical king David through the analysis of ten illuminations found in early medieval manuscripts in which he is depicted playing string instruments. First, a description of medieval manuscripts and king David and string instruments was presented, second, an analysis and a discussion of images as source material and an interpretation of the mythic and symbolic significance that is based on ideas presented by Paul Ricoeurs and Roland Barthes of the ten illuminations followed. The results showed that king David often was portrayed as a musical king, a dancer and a prophet that incarnated wisdom and justice; that king David served as a role-model for the Western regents, and that he was portrayed in an idealised and estethically appealing manner..