Käppala wastewater treatment plant situated on the island of Lidingö northeast of Stockholm is running a project during 2004 and 2005 with the purpose to map out the capacity of anaerobic digestion in the digesters that treat primary and excess sludge. The purpose of this thesis work, which is part of that project, was to characterize the present anaerobic digestion process and to investigate its capacity to treat other organic wastes such as restaurant waste and waste from water works. To decide the potential of both methane and biogas production from different substrates batch laboratory tests were carried out. To imitate the anaerobic digestion process at Käppala continuous tests with small scale reactors were carried out. These reactors were later fed with restaurant waste.The batch laboratory tests showed that primary sludge had a potential biogas and methane production of 0,62 and 0,35 Ndm3/g VS respectively after 40 days of digestion.

The purpose of this study is to discuss the use of social media by the Swedish Police for democratic purposes. The idea of citizen empowerment is closely related to the development of new communication technologies such as social media. Yet many studies indicate that governmental institutions rarely make use of the assumed potentials of social media.In this study, the democratic potential of social media is derived from Habermas normative concept of deliberative participation. Operational definitions emphasize discursive equality, interactive reciprocity and external impact. The analytical framework is combined with qualitative text analysis to highlight the conditions of interaction between representatives of the Police and citizens.In conclusion: the democratic potential of social media, from a Habermasian point of view, is to a significant extent neglected at the expense of its strategic advantages.

The purpose of this article is to describe the discourse in which public-private partnership (PPP) resides, within the Swedish parliament, in the field of infrastructure. I have chosen to look at the latest three years deliberation where PPP appears in parliament bills.This case study is based upon discourse as a qualitative method. Five indicator signs which is history, comparison, geographic location, vision of growth potential and solution controls the context of PPPThe result of the analysis was that a clear discourse was unravelled. A first rather surprising conclusion shows that it is possible to disconnect the discourse from PPP. PPP is not important by itself, the result shows that it only play the part of possible solution to the problems related to the discourse and does not have any value in its own.This result lead the conclusion that PPP is no more than a tool for politicians to get as much out of their infrastructural aims as possible, as rational vote-maximizing actors.

Various electromagnetic (EM) treatments has been investigated for their potential in improving crop productivity over the past century. There is today an increasing amount of scientists advocating EM treatments as an organically compatible method for improving plant growth and yield. However, failure to produce repeatable effects and defining causal mechanisms has made it a study of much controversy and debate. The subject requires indepth interdisciplinary knowledge, making it inaccessible for the majority of biologists, horticulturists and growers. In this combined literature review and pilot study, these issues are addressed by providing a comprehensive introductory review of the topic plant bioelectromagnetics and its potential horticultural usability.

I uppsatsen analyseras representationer av den groteska kvinnliga kroppen i feministisk konst. Alltfler konstnärer väljer att i sin konst utforska gränslanden i uttryck, så som det karnevalistiska, hysteriska och motbjudande. Utifrån en fallstudie som fokuserar på tre nutida konstnärer vilka arbetar med det groteska uttrycket vid framställningar av kvinnliga kroppar studeras intentionerna bakom deras verk. Kropparnas emancipatoriska potential problematiseras därefter utifrån postkoloniala teorier, feministisk konstvetenskap och queerteori. Att använda representationer av en kropp som definieras som kvinnlig är inte ett ofarligt projekt.

As the Swedish governments long term goals include a reduction of fossil fuel dependency, increasing pressure is placed upon energy companies to create and develop new solutions for renewable energy. The following case study was done in collaboration with the company Sydved Energileveranser AB and one of their contractors, Enarssons Skogsentreprenad AB. The objective of the study is to examine the bioenergy situation in region of Skåne and evaluate the potential solutions in the region for a forest-fuel assortment, based on a bioenergy-cutting-system. As a part of this study I have compared ordinary manual cuttings done with a chain saw and cuttings made using the new ?bio- energy cutting system?. The cuttings made under both systems were tested in areas near agricultural fields or pasture land in order to maintain an open landscape.

Augmented reality is an interesting technology which has increased in popularity the last couple of years. Even though we see more and more of this technology the use of it doesn?t match up to its true potential. This paper aims to investigate the possibilities of this technology and illustrate how companies can use it in their business to reach out to customers in a new and exciting way. The study consists of three parts.

The purpose of this study is to discuss the use of social media by the Swedish Police for democratic purposes. The idea of citizen empowerment is closely related to the development of new communication technologies such as social media. Yet many studies indicate that governmental institutions rarely make use of the assumed potentials of social media.In this study, the democratic potential of social media is derived from Habermas normative concept of deliberative participation. Operational definitions emphasize discursive equality, interactive reciprocity and external impact. The analytical framework is combined with qualitative text analysis to highlight the conditions of interaction between representatives of the Police and citizens.In conclusion: the democratic potential of social media, from a Habermasian point of view, is to a significant extent neglected at the expense of its strategic advantages.

Most of the city of Uppsala rests on postglacial clay with a varying content of sulphur. The sulphur occurs naturally in the clay in reduced form as sulphide and the clay is for that reason usually called ?sulphide clay?. Excavation during construction activities gives rise to large amounts of excavation material, of which the sulphide clay is a considerable part.When the clay is exposed to air and water, an oxidation of the sulphides occurs which may produce an acid leachate and the mobilisation of heavy metals bound in the clay or underlying material. The aim of the work has been to improve our understanding of the behaviour of sulphide clays and produce a basis for risk assessment in the future handling of excavation material with high sulphide content.

Oestrus in dairy cattle has changed over the last decades, the duration has decreased and the intensity of oestrus has declined. A possible explanation can be their high and increasing milk production. Heifers ability to show oestrus is probably not affected to the same extent. The aim of this study was to estimate and compare oestrus duration and strength in heifers of the Swedish Red and Holstein breeds. Standing oestrus has been the primary oestrus sign during many years.

En hörselnedsättning är en kommunikationsstörning som starkt påverkar en bebis utveckling på många områden, inte bara ljudperception och talad kommunikation. I Sverige screenas idag alla bebisar redan på BB, för att så tidigt som möjligt upptäcka medfödda skador. Dessa metoder har dock informationsbegränsningar angående hörselnedsättningens grad och frekvensberoende. När bebisar är ett halvår gamla kan den observerande audiometriska metoden Visual Reinforcement Audiometry (VRA) användas för att utreda hörselnedsättningen. Metoden baseras på att en audionom gör en subjektiv bedömning om bebisen reagerar och vänder huvudet till följd av presenterade ljudstimuli med känt frekvensinnehåll och känd ljudtrycksnivå.

I det här arbetet undersöks och jämförs två olika sökalgoritmer när de används för implementation av AI-spelare till brädspelet Pentago. De två algoritmerna som användes var alfa-betabeskärning och en nyare algoritm som kombinerar genetiska algoritmer och minimax, kallad genetisk minimax. Utvärderingen av resultaten visar att alfa-betabeskärning passar bättre vid implementation av en AI till Pentago än genetisk minimax. Alfa-betabeskärning med ytterligare optimeringar har potential att lämpa sig väldigt väl för implementation av spelare till Pentago. Ytterligare visar resultaten att genetisk minimax inte är en passande algoritm för AI till Pentago.

Om man vill skapa ett realistiskt hav inom Computer Graphics är det viktigt att man har snygga övergångar till andra material. Ett exempel på detta är stränder och det är precis där fokusen på den här studien har legat. Studien gick ut på att hitta en enklare lösning på att visuellt förbättra stränder inom Computer Graphics. För att göra detta så testade två olika metoder i olika experiment. Den ena tekniken som testades var att simulera partiklar för att få fram en bättre strandlinje och de andra var att skapa en shader för att förbättra den.

The subject of this thesis is the history of the library at The Göteborg Museum of Art. The aim of the thesis is to depict and analyze the emergence and the expansion of the library?s holdings until 1939. To fulfill the aim, two questions are asked. The first question is: Is it possible to argue that the library?s holdings were collected to document the entire world of art? The question is formulated in relation to a comment by Susan Wyngaard.

The purpose of this essay is to examine the consequences following an adaptation from literature to video game formatby comparing Alice's Adventures in Wonderland and Through the Looking Glass with American McGee's Alice and,primarily, Alice: Madness Returns. In order to answer this, aspects of both game theory and literary critique are takeninto consideration, regarding for example the narrative potential of the game medium and the gameplay's possibleresemblance with Wolfgang Iser's theory of the reading process.The analysis shows in what ways the original narrative has been altered in order to fit its new medium. Some of thebooks' main ingredients are simply retold in the games' so called information spaces, i.e. text and video sequenceswhere the otherwise playable character is not controlled. Others, instead, have undergone a ludolization or ergodizationwhere the story events are experienced as playable elements in the games' action spaces.