This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.

This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.

The design of the building envelope affects the energy consumption of a building. As the energy requirements for new buildings are becoming more demanding, the performance of the building envelope must be improved. Energy efficiency and durability are important attributes to consider.This report includes investigations of the building envelope, moisture and passive solar energy. It is based on the analysis of two different buildings with different designs. These buildings stand as reference for two of the companies who are working on a new, climate smart, residential area in Uppsala, Sweden.Studies and analyses on energy consumption and moisture transportation were made.

Present master of science thesis has been carried out at the Swedish Road Administration consulting services (Vägverket Konsult) in Karlstad. The purpose of the study is to investigate how well the calculated drawdown of the groundwater table predicts the actual drawdown when the road and railway gates at the studied sites are built. For this purpose the groundwater levels at the three bridges were measured during 6 months. The bridges in question are two railway bridges situated in Ölme and Ulvåker and one road bridge crossing a pedestrian and cycling path in Lidköping.In Ölme the calculated area of influence was smaller than the measured one. It differed up to 30 meters, i.e.

Syftet med studien är att se hur socialtjänsten med sina barnavårdsutredningar kan vara en del i upprätthållandet av könsspecifika normer, förväntningar och värderingar.Våra frågeställningar är: Hur ser diskursen om pojkar ut; hur beskrivs och värderas pojkar i utredningstexten? Hur ser diskursen om flickor ut; hur beskrivs och värderas flickor i utredningstexten? Hur ser könsskillnaderna ut?Det är en kvalitativ studie med kritisk diskursanalys som metod och socialkonstruktivism samt genusteori som teoretisk grund.Materialet utgörs av 14 barnavårdsutredningar upprättade av socialtjänsten där hälften gäller flickor och hälften pojkar.I analysen framkommer att fokus i flickutredningarna till viss del skiljer sig från det som står i fokus i pojkutredningarna. Vid utredning av flickor utgör umgänge och sexuella relationer en stor del av texterna, där det senare inte överhuvudtaget finns med i pojkmaterialet. Vi finner även att skillnaderna har förändrats en del i jämförelse med den tidigare forskning vi tagit del av där det framhålls att flickor i allmänhet beskrivs som passiva objekt och pojkar som handlande subjekt. Vi har i materialet kunnat se att både pojkar och flickor görs till subjekt men också objekt beroende på situation..

The Swedish government has introduced a goal to reduce the energy intensity by 20% to the year 2020. To reach this goal actions need to be taken throughout the energy sector which includes residential and commercial buildings. This thesis considers the possibility to reduce the energy usage in a building located close to Uppsala. The analyzed building is a combined office, cafeteria and entrance and was completed about half a year before this project started. Therefore the measures presented for a more energy efficient building are presented as measures for future constructions.Simulations have been made in VIP-Energy, a dynamic energy calculation program.

It's an everyday experience shared by many that nature can be of help in relieving pain, reducing stress, support mental recovery etc. In the last three decades or so this experience has also found support in a large number of scientific investigations. Among other things the experience of nature has been shown to reduce stress and pain in patients and to boost concentration and reduce impulsive behavior in children. Most of this research however has mainly been concerned with the visual modality. In this thesis the aim has been to focus on the auditory modality in this context by trying to reveal some effects on people from the exposure of nature sounds played indoors in three different environments: a grammar school class room, a kindergarten play room and a post-surgery wake up room at an intensive care unit.

Lake lowering in sulphide-rich areas is currently a major environmental impact for surface water. This study focuses on whether there is a relationship between a gradient of lake lowering and surface water impacts in areas of sulphide-rich sediments, in order to better understand their contribution of heavy metals and sulfuric acid. Also, is it a reasonable method to use the reduced lake area in order to quantify the gradient? The survey was conducted by collecting water samples from reference lakes and lowered lakes from south to north in coastal areas within the county of Västerbotten. Water samples were then analyzed for TOC, pH, conductivity, anions, base cations, alkalinity, acidity, sulfate, Al, Cd, Fe, Mn, Cu, Zn and Pb.

This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.

The door and its surrounding, is an important part of all buildings. It often amount to a significant part of buildings total costs. The more demands of functions the largerdoes the costs grow.The purpose of this report is to analyze those demands and how to fulfill them.Another purpose is to examine of which reasons the cost grow and how to avoid it inthe best possible way. The study will be performed in collaboration with Bjerking AB. To define the demands a literature study will also be performed.

SammanfattningSyftet med examensarbetet är att utveckla en ny algoritm för att bedöma förarens framförhållningsförmåga. I arbetet ingick att undersöka vilka produkter som finns på marknaden idag, hur en förare kan påverka bränsleförbrukningen samt vilka principerna för Heavy EcoDriving är och hur de kan användas i de IT-lösningar som examensarbetets uppdragsgivare Fleetech utvecklar och säljer.Av två möjliga inriktningar, backkörning och accelerations- och bromsanalys, valdes det senare för utveckling av algoritmen. Tre olika koncept togs därefter fram:? Koncept 1: Utrullningskvot Där tiden som föraren använder motorbromsen(utrullning) loggas och ställs i relation till den tid som bromsen används.? Koncept 2: Accelerations- och bromskvot Där den hastighet som bromsas bort ställs i relation till den hastighet som har accelererats upp för att ge ett mått på bortbromsad energi.? Koncept 3: Framförhållning Detta koncept är tredelat. Antalet korta stop, tiden mellan broms och nästa acceleration samt hur mycket utrullning en enskild inbromsning innehåller.Koncepten modellerades och simulerades varefter de omsattes till kod.

The purpose of this study is to examine which factors played an important role in the food price crisis of 2007-2008. Theories used are Microeconomic theory, explaining changes in supply and demand, and Macroeconomic theory, explaining the impact of changes in exchange rate on prices. A theory regarding speculation is also used to explain the impact of speculative activities effects on price. The method used is multiple regression analysis in order to determine the effects which ethanol production, oil price and dollar exchange rate had on the surge in the price of corn, rice and wheat.The data used is in monthly observations during the period 2005-2008. However, other factors are taken into consideration during the study, such as production quantity, stock size, economic growth, speculative activity and population growth.

This is an examination that investigates how daycare during nights, evenings and weekends, so called ?nattis?, is produced in media with restriction to three big Swedish newspapers during 2004-2012. The main intention and the base to this work is to see how media chooses to produce daycare during nights. As a help to find a result to this main intention there are four questions. These questions are which similarities and differences that can be shown in the articles, which main arguments that can be shown, if it?s a positive or negative picture that the articles are producing and which patterns and themes that can be shown.                      The method to find an answer to these questions and the main intention were an investigation of 21 articles.

The global climate-change means increasing mean-temperature and higher precipitation in Sweden, which leads to shorter periods of frozen ground in the forest. At the same time the harvesting machines are getting bigger and more powerful. The forest industry aim at an even wood flow, and the ground damage has to be as low as possible. The two biggest causes for ground-damage is the bearing capacity of the forest ground and the ground-pressure of the harvesting machines. The aim of this study was to find out some rules for the machine choice considering ground pressure, when harvesting on ground with low bearing capacity.A field study, using a Valmet 890.3 forwarder, was carried out where different ground pressures and their effect on the ground were tested on two different types of ground.Additionally, an inventory of damaged harvesting grounds was made.

Background: Previous research demonstrates that negative stress in the current situation is common among nurses working in emergency care. The stress is demonstrated to be associated with poorer provided care for patients and impaired health of nurses. Aim: The purpose of the study was to highlight nurses' perception of stress and their work for a good nursing care on an emergency care department. Method: An empirical design with qualitative approach has been used. Five semi-structured interviews were conducted with nurses and forms the basis of the results of the study.