The aim of this study was to investigate whether a dietary change, physical activity or a combination of both gave the best result when treating obesity, concerning weight loss and BMI. Excessive weight and obesity are today a big health-issue and it is estimated that 10 % of the men and 12 % of the women in Sweden have a BMI over 30, i.e. are suffering from obesity. The corresponding number for children is 3 %. No one can say for sure what causes obesity but there are many theories.

This thesis examines the extent to which segmentation and categorization in the context of direct marketing is an efficient way for a company to enhance its marketing effectiveness. The thesis is built on social identity and categorization theory, and tested by using statistical analysis. The conclusion is that segmentation and categorization is indeed an effective way of conducting marketing campaigns..

A clean and affordable energy source for cooking is deficient in developing countries. People rely on fuels that contribute to environmental, social and health problems.Biogas is an alternative energy source and an increased investment in small-scale biogas production can in several developing countries be found. Several projects have started to use the technology in developing countries because of the benefits with biogas. Some cases in the establishment of biogas plants have succeeded and some have not. The study is a literature review supplemented by two field studies.

Storage of biomass is often associated with problems such as heat development, dry matter losses and reduction of fuel quality. The rise in temperature can potentially cause a risk of self-ignition in the fuel storage. Moreover, emissions from storage piles can cause health problems in the surrounding. The dry matter losses and reduction of fuel quality can have economical effects. The aim of this thesis project is to develop guidelines on how to store large amount of biomass at Vattenfalls heat and power plants in an optimal way.

Byggandet av passivhus har ökat kraftigt under 2000-talet i Sverige. Dock har det inteutformats och byggts några studentbostäder i passivhus form ännu. Denna studie går ut påatt försöka utforma studentbostäder som uppfyller de svenska kraven för passivhus. Genomatt välja ut lämpligt material och komponenter, t ex. väggtyper, platta på mark ochfönstertyper redovisas olika beräkningar för energiförbrukning.I metoden till beräkningarna som genomfördes, där resultaten hamnar i jämförelse medvarandra, användes VIP-energy samt PHPP.

Följande projekt går i korthet ut på att avgöra om användning av kylsystemet i en transformatorstation är relevant, om det minimerar temperaturhöjningen orsakad av effektförlusterna som transformatorn avger. Arbetet ska resultera i förslag på val av transformatorer samt beskriva dess egenskaper. Vidare vill vi finna lösningar kring problemet med överhettning i transformatorstationerna och att de generella kraven såsom låg ljudnivå och tillräcklig ventilation (för att ta bort den värmeförlust som de inre komponenterna avger) skall uppfyllas.  För att kunna ge olika förslag på val av transformator i transformatorstationerna har vi på Holtab AB utfört olika beräkningar som visar skillnad för pris, kvalitet, livslängd och egenskaper (effektförluster, energiförluster)..

Purpose: To examine how IR-related press releases affect share price for stock companies, and to explore how said companies practice Investor Relations.Methods: The study was conducted using an event study as well as e-interviews. The event study has a quantitative deductive research approach where the market model is used for calculating the abnormal return based on press releases. The e-interviews have a qualitative research approach and follow a semi structured interview guide. The study includes all listed stock companies within the Swedish construction industry and includes press releases from the last decade.Theory: The study is based on the efficient market hypothesis and its semi strong form, theories within Investor Relations and previous research.Results: The event study shows a significant negative abnormal return during a four day period starting the day after the press release event. The negative abnormal return could derive from investor relations being used by companies as damage control, or that the investors? expectations are too high as a result of IR.

Vobbla Racing is a racing team who has an online sales department that is in need of an upgrade to be more efficient and easier to use. Before this study their present homepage was anything but structured. The products were sorted in an illogical order which made it difficult for the customer to find a wanted product. The customer had to summarize the products, transport sums and other costs. The order had to be e-mailed or phoned in to Vobbla Racing Produkter.

AbstractThe tests work is about the subject "synergism of steel and concrete."The construction sector is in a strong competition and the different companies in the PrefabMarket has ever tried to develop new design solutions that are efficient and environmentallyfriendly.The purpose of this report is to highlight different aspects of interaction and size up a columndimension and to examine its efficiency and load capacity as Eurocode 3 and Eurocode 4. A sizing chart that describes the relationship between the torque and normal force shouldalso be made of the interaction . .

I denna rapport undersöktes S&P 500 Energy Index genom multipel regressionsanalys. Modellerframställdes genom regression och baserades på data hämtad från börsen. Modellerna angavs iprocentuell ändring respektive absolut ändring. Validitet för varje enskild kovariat testades och en risknivå avgjorde om en kovariat skulle inkluderas i modellen eller inte. Detta ledde till två modeller med bättre kurvanpassning till den givna mängd data över det valda energiindex.

Intelligent IT-based solutions, often called Smart Grids, are considered to be the future balancers of renewable energy sources. One area within the Smart Grid concept is called demand response, which is focused on making customers more consumption flexible by making them more active in their consumption. In this thesis the aim is to analyze a business model by investigating the income potential for a demand response solution as well as its market potential. This has been done through literature studies, interviews and development of a computational model.The use of 5000 households with flexible consumption can provide a cost reduction of 17.2% or 2.4 million SEK for a balance responsible party during an average year. If the solution is used to make strategic bids on the regulation markets the study indicates that the largest potential for revenues lies within this strategy.

BIOGAS POTENTIAL IN GRASSES FROM WETLANDSMarvin MartinsThe purpose of this study has been to survey wetlands that are suitable for mowing and to analyze the biogas potential in the harvested grasses. A preformed investigation showed that there are suitable wetlands, which can be harvestable, namely those mowed formerly in traditional haymaking. The practice of traditional haymaking is dying out in Sweden today but there are several good reasons why it should to be reconsidered. Nature- and cultural values are obvious, also the unutilized energy in the grass.The suitable types of wetland that were specifically studied were the productive wetlands; meadow marshes and wet meadows. These wetlands are represented in the Swedish meadow- and pasture inventory database; (TUVA) and the Swedish national wetland inventory (VMI).

Mitt examensarbete innefattar en fönsterutredning för radhusområdet Skeppsvägen i Bålsta. Fastighetsägare är Håbohus AB och examensarbetet har skrivits för Skanska Sverige AB. Arbetet har skrivits på plats i Bålsta där Skanska Direkt AB har eget kontor och erhåller idag totalentreprenaden för renovering av Skeppsvägen. Arbetets syfte är att klart och tydligt redovisa eventuell effekt och energibesparing vid byte av befintliga fönster och altandörrar.Undersökning av fönster och altandörrar har gjorts okulärt, med värmekamera och med fuktkvotsmätare. Vid den okulära besiktningen noterades färgsläpp på fönster.

NCC has given us a commission to investigate a planned housing area in Haga, Karlstad, situated close to the traffic route Hagaleden and the railway. The housing area consists of one hundred apartments in five different houses. The houses are linked to each other by balconies with glass panels. A long carport is situated between Hagaleden and the housing area to absorb part of the noise from the road. The design of the housing area is creating a silent backyard.

Syftet med en integrerad projekteringsprocess är att information tidigt skall tas fram och att projektörer skall kunna arbeta parallellt, exempelvis genom en gemensam BIM-modell. Revit och IDA Indoor climate an energy, även kallat IDA ICE, har i denna rapport visat sig vara två mycket effektiva verktyg som tillåter att information både kan tas fram, i form av energianalyser, men även kommuniceras digitalt med hjälp av så kallade IFC-exporter. Då projektörer får möjlighet att jobba i en gemensam modell kan de arbeta parallellt vilket innebär att information kan tillföras både tidigare och snabbare i projekteringsprocessen. I Revit kan arkitekten enkelt skapa olika utformningsförslag och jämföra dessa med avseende på energianvändning. Analyser från denna studie har visat att energisimuleringar i Revit kan användas för att utforska olika utformningsalternativ och därmed finna optimeringsmöjligheter med avseende på energi och inomhusmiljö.