The aim of this thesis is to investigate the electric solar potential on the Swedish island Gotland. The Gotlandic habitations have been divided into four house categories. For each category energy demand, roof area, geographic orientation androof tilt have been decided. Solar radiation data have been collected from the Swedish solar radiation model STRÅNG (STRÅNG, 2012).The buildings characteristics and the solar radiation have been used as input values in common solar formulas, the solar potential for each building category have been summed up to a total electric solar potential for the region.The electric solar potential on Gotland was calculated to 242 GWh/year with solar data from 2010. Gotlands largest city, Visby, is marked as cultural heritage by UNESCO (UNESCO, 2012).

Syftet med detta arbete var att studera skillnader mellan de tre energi- och klimatsimuleringsprogrammen IDA Indoor Climate and Energy (IDA ICE), VIP-Energy (VIP) och IES Virtual Environment (IES) med avseende på funktioner, användarupplevelse och simuleringsresultat.Av dessa tre olika alternativ för jämförelse lades störst vikt vid simuleringsresultat. En byggnad ritades upp i programmen med samma indata så långt det var möjligt där resultaten för byggnadens specifika energianvändning (BSE), enligt definition av Boverkets Byggregler (BBR), och årlig energianvändning kartlades. Utöver denna simulering gjordes en känslighetsanalys av indata där flera parametrar ändrades stegvis och resultat för BSE jämfördes med grundsimuleringen.  De parametrar som testades var bl.a. U-värden för klimatskalets samtliga delar, rumstemperatur, ventilationsflöden samt även programspecifika inställningar.Resultat från simulering av årlig energianvändning visade att IDA ICE och VIP båda räknade med en total energianvändning på ca 129 MWh per år med jämlik fördelning både för tillförd och avgiven energi. IDA ICE beräknade BSE till 101,4 [kWh/(m2 år) Atemp] medan VIP räknade med 102,9 [kWh/(m2 år) Atemp].

In this thesis we study four groups of students in grade 8, 9 and 10 when they try to solve a classical mathematical problem: Which rectangle with given circumference has the largest area? The aim of the study was too see how the students did to solve a mathematichal problem?The survey shows that students have rather poor strategies to solve mathematical problems. The most common mistake is that students don?t put much energy to understand the problem before trying to solve it. They have no strategies.

Our modern society is in many ways built with and dependent on fossil fuels, which are used for energy production as well as for transporting humans and goods. Without the oil, many of the things we take for granted would not be possible. During the last century, the use of oil has increased steadily and will probably keep increasing as the world population and the economic well-being for many people increase. Since the oil is a finite resource, we will have to find other fuels that can replace it if we want to keep the same rate of development in the future as the availability of petrol fuels will decrease with rising prices as a result. Furthermore, fossil fuels have the disadvantage that they produce harmful emissions when combusted and thus affect the climate and air quality locally and globally.

This report consists of two parts, out of which the first deals with the planning and designing ofa small house in the Swedish city of Huddinge, using the weather conditions of the Swedish cityof Malmö. The house has to be in accordance with the Swedish building- and constructionregulations, as well as with the limitations in energy consumption given.The house itself has to consist of at least two bedrooms, and blueprints of the house, variousconstructional elements, ventilation, sanitation and electricity have to be drawn. Calculations ofthese aspects also have to be made, to ascertain that the different parts function as they should,and that the dimensions are sufficient.The second part is called ?Allergy free home?, and investigates how indoor climate affects us,and whether it has changed during the last few decades. It also makes an effort to see whetherthe increase of allergies and asthma is correlated with possible changes in indoor climate, andwhether technical solutions might help to handle or even decrease the issues arisen.

A wastewater treatment plant has the task to refine the wastewater from substances that should not be released into the environment. The decomposition process can, in a simple way, be described as follows: micro-organisms breathe oxygen and eat unwanted substances. The environment in which the micro-organism lives is known as sludge and the correct amount of oxygen available in the sludge is important for the decomposition to be effective. The oxygenation of the sludge alone stands for about 30% of the plant?s energy consumption.

Abstract The global average temperature has increased by 0,74°C over the last 100 years. Most probably, the explanation is due to increasing use of fossil fuels and the agricultural expansion of land use. The new life stile of mankind leads to increasing concentrations of greenhouse gases in the atmosphere. Food consumption contributes with approximately a quarter of the total greenhouse gas emission per person and year, why it is an important task to reduce these. The aim of this work is to quantify energy use and greenhouse gas emissions for (Swedish) herbs produced in Swedish greenhouses. The study is based on a LCA (Life Cycle Assessment) and collected data from participating companies producing herbs in pots.

The structure of the thesis is based on opportunities to attract businesses to the region, the need of establishments in the region and benchmarking with establishment strategies of other cluster initiatives. The identified opportunities are the local business relationship with ABB, the prerequisites of life quality in the region and the availability of financial support. Further on has a number of opportunities to be developed been identified; diversification of the existing businesses, an expansion of the cooperation with universities and to simplify the contact with local authorities. Challenges that HVV is facing is: creating a more dynamic labor market, secure long-term labor supply, spread the image of the brand HVV and finally putting HVVs geographic scope. Two of the identified needs of establishments are strategically important: to establish a third-party logistician and commercializing systems for distributed generation and energy storage.

I arbetet undersöks hur kunskap om systemtänkande och ekosystemtjänster kan användas vid utformning av ett produktionslandskap ansluten till fjärrvärme i området Elleholm i Karlshamns kommun. Anledningen till arbetets fokus är slutsatser om utbyggnad av resurshushållande växthussystem i Elleholm som drogs under masterkursen Energy Landscapes, våren 2014. Målet med examensarbetet har varit att bidra med djupare analys av växthusutbyggnad utifrån teori och att med en landskapsarkitektonisk vinkling rekommendera placering och utformning av utbyggnad inom ett avgränsat projektområde. Systemtänkande och ekosystemtjänster undersöktes först teoretiskt i en litteraturstudie och applicerades sedan praktiskt i en fallstudie. Litteraturstudien visar att systemtänkande baseras i en vetenskaplig teori, systemteori, som influerat flertalet discipliner och även påverkat teori inom landskapsarkitektur. Landskapet kan ses som ett komplext och öppet system med flera subsystem och systemnivåer. Begreppet ekosystemtjänster (ekosystemens direkta och indirekta bidrag till människors välbefinnande) har i sin tur uppkommit för att försöka påverka och styra samhällsplanering mot beslut som möjliggör ekosystem att fortsätta ?ge? människan ekosystemtjänster. Ekosystemtjänster kan ses som komponenter i ett landskapssystem. I fallstudien applicerades teori kring landskapssystemets nivåer och ekosystemtjänster för att få kunskap om system inom projektområdet i Elleholm.

The interest for wind power has increased in Sweden. Northern Sweden is especially interesting due to that a new wind resource map shows that there are areas in northern Sweden that have more potential for wind power than what have been known before. Therefore E.ON Vind is interested in finding out if, and where, there are suitable places for establishment of wind power in northern Sweden. The purpose of this master thesis is therefore to perform an inventory of northern Sweden for suitable places for wind power. The master thesis is performed at E.ON Vinds office at Vasagatan in Stockholm.

Composting is a process in which organic matter is mineralized by microorganisms. In January 2005 landfilling of organic waste was prohibited in Sweden. With this prohibition composting has become an important alternative to handle the produced organic wastes. One problem with continuous small-scale composting is the production of organic acids that will inhibit a further composting process. The aim of these theses was to study what effects temperature and dry matter content had on the production of organics acids, and what effect the organic acids had on the mineralisation of the substrate as well as the stability during storage of the product.

Sleep has a substantial effect on health status where good sleeping habits proves positive on learning. The aim of the present study was to map the views and perceptions of sleep and its effects on health and school performance on 12-year olds. The goal is to visualize these views to give teachers the possibility to better plan the education in concordance with the students? abilities. The study is based on qualitative semi-structured interviews where 12 students aged 12 have partaken.

Energi är en resurs som måste användas effektiv för att undvika onödig negativ miljöpåverkan och utgifter. Återmatning från nedåtgående malmtåg till uppåtgående malmtåg leder till en effektivisering i energiutnyttjande. Beräkningen av den återmatade energin utgår ifrån tågets lägesenergi och förlusterna från räls, lutning, vind och kurvor. Totalt kan återmatning av energi ge en besparing på 20 % för enkelspår och 20 % respektive 21 % för dubbelspår. Dubbelspår kan ha mer trafik än enkelspår men förhållandet mellan konsumerad och återmatad energi är i princip den samma.

The urban heat island is an area restricted to a city center where the temperatureis higher than its surrounding environment. The greatest temperature difference isfound at night when the weather is calm and the sky is clear of clouds. There are twomajor causes behind this phenomena and the first one is the use of energy forheating of houses. The heat leaks through the walls of the buildings and warms upthe surrounding mass of air. The second one is the use of building material whichstore the suns radiation on daytime and releases the heat during night.

Matematikundervisningen behöver utvecklas för att stärka svenska elevers kunskaper och samtidigt bryta trenden av nedåtgående resultat. Examensarbetet ger förslag på uppgifter som stödjer och utvecklar samtliga elevers matematiska förmåga. Uppgifterna samlas in i en förorts­skola i södra Sverige, när skolan planerar en utökning av undervisningstiden i matematik. Examensarbetet utgår från psykologen V. A.