Despite the fast growing development of IP-telephony services, only a small number of people in Sweden use them. Of the total amount of fixed telephony subscriptions, maximally five percent are based on IP-technology. Through an exploratory study, the main purpose with this thesis is to identify factors that influence the use of IP-telephony on the consumer market, and the factors? internal relationships. The thesis also has two sub-purposes: firstly, chart the supply of IP-telephony services and secondly, discuss what IP-telephony services that are requested by today?s customers in the future.

In today?s World is climate change an important and hot topic. Climate scenarios for Sweden show a warmer climate, especially during the autumn, winter and spring. The same climate scenarios also show that the precipitation will increase during this part of the year, however, during the summer the opposite is expected to occur. The purpose of this essay is to examine how future climate change will affect Stockholm especially the expected increase in precipitation, which may lead to a rising level of the Lake Mälaren. During 2000/2001 was Stockholm hit by a flood. This flood nearly resulted in major consequences and showed that there were significant risks for the city of Stockholm and increasing precipitation will result in even more water in the drainage systems of Lake Mälaren. The results presented here show that it is important to increase the drainage capacity of Lake Mälaren in order to reduce the risks of flooding in the central parts of Stockholm.

This essay aims to explain the fluctuations in the Swedish transition rate to higher education between 1923 and 2002. With theories of human capital, and screening, as points of departure, seven variables are selected and their correlation with the transition rate investigated by use of graphs and tables. The variables are unemployment, youth unemployment, the supply of academics, cohort size, number of high school graduates from programs preparing for ensuing studies, relative wage trends for worker categories with differing levels of education, and structural phase. Results show that no single variable nor the theories of human capital or screening can explain the fluctuations in transition rate in full. Instead I propose a theoretic model which amalgamates the above and places risk aversion as the driving force behind the individual?s educational decision.

As the information society becomes increasingly flooded with digital images, the need for efficient image retrieval systems increases as well. To handle the vast amounts of data involved, the indexing process needs to be run automatically, using content-based descriptors extracted directly from the digital image, such as colour composition, shape and texture features. These content-based image retrieval systems are often slow and cumbersome, and can appear confusing to an ordinary user who does not understand the underlying mechanisms. One step towards more efficient and user-friendly retrieval systems might be to adjust the weight placed on various descriptors depending on which image category is being searched for. The results of this thesis show that certain categories of digital images would benefit from having extra weight assigned to colour, texture or shape features when searching for images of that category..

AbstractPurpose ? The purpose of this study is to investigate possible reasons for long lead-time in a customer driven production, and how the lead-time can be reduced. To fulfil the purpose the study has been broken down into two questions.1. Whichfactorsaffectthelead-timeinacustomer-drivenproduction?2.

The purpose of this case study is to demonstrate how societal mechanisms can impact on asylum seekers and influence their individual identity. The information for this case study was collected through comprehensive interviews with a group of asylum seekers from Söderhamn whereby the individuals expressed their perception of their current situation. From the gathered material we could see a pattern emerge which gave us the framework and the foundation for our theoretical approach. The similarity we discovered when analyzing the material was the powerlessness the individuals experienced e.g. the individuals had no possibility to influence their current situation and worse, it was impossible for the individuals to enter society even when they had the willpower to do so.

ABSTRACTBackground: To be stricken with a cardiac infarction is among other things linked to different risk factors.  Many studies show that the participants in cardiac rehabilitation programs learn to deal with the risk factors, increase their quality of life and lessen the risk for re-infarction.Objective: To describe the lifestyle and perceived quality of life of the individuals after having participated in cardiac rehabilitation program and to see if they had maintained their results up to a year after having a cardiac infarction.Method: The 19 individuals who had participated in cardiac rehabilitation in 2010 after having had a cardiac infarction were asked to participate in the study. Everyone agreed to participate. The study was made analyzing the surveys, one a locally made, that the individuals had filled out four and eight months after cardiac infarction, and the other the generic Quality of life questionnaire EQ-5D, that the individuals had filled out two and twelve months after cardiac infarction. Result: The individuals have not changed their lifestyle after having participated in cardiac rehabilitation which can be interpreted that they have followed existing recommendations. The mean weight increased with one kilogram, no depression is shown and they stress less.

Denna rapport ingår tillsammans med en muntlig presentation som examination i kursen Examensarbete i ADB, 20p vid Högskolan i Skövde. Kursen ingår som slutmoment på det systemvetenskapliga programmet.Undersökningen, vilken genomfördes i samarbete med företaget Arthur Andersen, hade som syfte att utvärdera verktyg och metoder för riskanalys av verksamheters informationssäkerhet.Medelst intervjuer av 5 experter inom området, samt med en dokumentstudie, utvärderades problemställningen kvalitativt. Resultatet blev en analys av existerande verktyg och metoder för riskanalys, med avseende på deras olika fördelar och nackdelar, samt deras resultat..

We have the tradition in Sweden to build villas and houses with a wooden framework. It has become natural for us because we have so much forest in our country. Building with wood has advantages, it is easy to process, but also disadvantages, as it is sensitive to moisture.Finland has long made use of the thermal blocks to build villas. It is a type of bricks that are a bit like a sandwich element, with a core of EPS and concrete on both sides of the core material. The concrete is hollow, so that after the walls has been bricked up you pour concrete into the hollow bricks.The issue of this report is to find out if concrete can be an alternative to wood as framework material in villas.

The increased interest in a sustainable environment puts pressure on companies in the manufacturing industry. Rexcell Tissue & Airlaid AB (Rexcell) in Skåpafors produces paper to be converted into tabletop and hygiene products. Rexcell is certified according to the environmental management system ISO 14001, gaining competitive advantages by showing that the company works toward a sustainable environment and that they follow current legislation. The activities at the company are classified as hazardous to the environment according to the Environmental code. Every year, the activities are inspected by an independent inspector.

The purpose of the present essay, as part of the project Self esteem and Life circumstances among teenagers, was to investigate the rate of both deliberate self-harm (DSH) and risk behaviour related to eating disorders in 14-year-old swedish adolescents, gender differences in DSH, and possible correlations between DSH and risk behaviours related to eating disorder. In addition, the effects of expressive writing (Pennebaker & Beall, 1986) on DSH and risk behaviours related to eating disorders were investigated. Data from two pilot studies are included. In total, 198 14-year-olds from four different schools in southern Sweden participated. For the purpose of measuring the rate of DSH, a simplified version of Gratz's (2001) Deliberate Self-Harm Inventory (DSHI) was used.

This is an examination of the Swedish unemployment insurance system and the effects it has on the Swedish long-term unemployment. A search model is explained to give an understanding to the incentives of the unemployed. Different mechanisms that create unemployment and that could create long-term unemployment are investigated, but primarily the unemployment insurance is in focus.The Swedish unemployment insurance has undergone several changes the last fifteen years that have improved its efficiency. The introduction of a finite duration of unemployment insurance entitlement was an important step and so was the decrease in the replacement ratio. Even so, I assess that there is still room for improvements of the incentives to search for work among the unemployed.

Laws and regulations govern the school kitchens in Sweden. The municipality controls how well the school kitchens obey those laws. An annual fee covers the municipality?s expenses for the public control of the school kitchens. To be able to calculate this annual fee, a risk evaluation needs to be done.

To reduce emissions of carbon dioxide (CO2) Carbon Capture and Storage (CCS) technologieshave been developed. Chemical Looping Combustion (CLC) is a CO2 capture technologywith the CCS framework, and at Chalmers University of Technology in Gothenburg,Sweden, a 100 kW chemical looping combustor has been built.This project aimed to investigate to what degree air can replace helium as the uidizinggas for uid dynamical studies in a CLC cold ow model of the above mentioned 100 kWfacility. Experiments were performed using air and helium separately as uidizing gas andpressure data were obtained, which formed the basis for the comparison. The project alsoaimed to investigate uid dynamics in the uidized bed and study when the risk of sluggingoccuring was greatest. The results were presented in the form of figures and tables dividedinto pressure, concentration and standard deviation of the pressure.The results obtained showed that air as uidizing gas did not create the same uid dynamicsas helium over the entire fuel reactor.

Denna studie har undersökt om momentumeffekt existerar på Stockholmsbörsen ochhur bolagsstorlek har en inverkan i momentumportföljer. Studien har baserats påJegadeesh och Titmans strategier där månatlig aktieprisdata från Stockholmsbörsenunder åren 2000-2013 har inhämtats. Aktieprisdatan användes för att bygga åtta olikamomentumportföljer. Genom att applicera momentumstrategier på olikabolagsstorlekar fann vi att man kan öka avkastningen mot en lägre accepterad risk vidval av rätt bolagsstorlek. Samtidigt erhåller momentumportföljer en genomgåendehögre risk än både de jämnt viktade och värdeviktade jämförelseindexen.