This thesis is a study of residential environments and a design concept for a proposed housing area in Tierp. The industrial era created a need for the central planning of housing. The confined environments that arised in cities during the 19th century, together with modernistic and democratic ideas, led to regulations in planning and housing. Though the overall goal has been the same: to create a good standard in living, the ideas of how to achieve that have varied. The starting point for following generations has been to attend to the insufficiencies of the earlier planning periods.

A power system will inevitably be subjected to transient overvoltages, most often produced by switching operations and lightning strikes. These transient overvoltages may harm sensitive equipment without sufficient protection, but it is not an easy task to predict what transients may occur or how they affect the system. A fault occurred in a low voltage system at Forsmark 2012 and overvoltages from lightning were concluded as the probable cause. The three aims with this thesis are to develop and test a model of the power system at Forsmark 3, analyse the transient behaviour of the system when subjected to lightning surges and identify critical parameters, and lastly to provide a tool for investigating the protection of the system. The modelling and simulations were performed in the freely available simulation program LT Spice.

Simulation of different systems can be done using a graphical model description of the system based on block diagrams. The simulation software Matlab/Simulink offers a lot of possibilities to describe a huge number of systems, which can be linear as well as nonlinear. The simulation using Matlab/Simulink is done by integration based on different kinds of numerical methods.When nonlinear Simulink-models are simulated, it is often interesting to apply a Kalman filter to handle the noise that may occur within the process as well as corrupting the measurement. However, application of such a filter leads to an extensive time-consumption despite using fast computers. The reason is that the existing Matlab functions are not constructed for time optimal evaluation.

When protection zones for wells are delineated, it is important to acquire good knowledge about possible travel time from different points in the catchment area to the well. Often, simple analytical methods are used for estimating travel times and the assumption is made that the hydraulic conductivity is relatively homogenous within the aquifer. Nevertheless, many aquifers are strongly heterogeneous which may lead to differences between estimates and actual travel times. As a part of the process to develop improved methods for delineating protection zones for groundwater supply wells, a tracer experiment was performed in a glaciofluvial esker formation in Järlåsa. On the basis of the experiment, a numerical flow model was created for the test site.The purpose of this master?s thesis was to apply the flow model to an aquifer where the hydraulic conductivity shows great variability and should be described by a stochastic distribution.

Uppsalahem AB is a municipally owned real estate concern that owns and administrates housing for nearly 30 000 people. The company puts a lot of effort into reducing the energy use of their housing stock. This project is a master?s thesis in the energy systems programme at Uppsala University, carried out in collaboration with Uppsalahem. The aim of this thesis is to provide energy saving measures for fourteen student housing buildings in Uppsala, Sweden.

It is not uncommon for math difficulties and reading difficulties to occur simultaneously. Despite this, math and reading difficulties are thought to have different cognitive profiles where math difficulties are linked to number sense; an innate ability to understand, approximate and manipulate both quantities and numerical information, whereas reading difficulties are linked to phonological ability; an innate ability to understand, create representations of and manipulate phonological information. A possible link between the difficulties is that phonological abilities also could affect mathematical ability. Support for this comes from studies where comorbid math and reading difficulties are associated with more severe difficulties in arithmetic ability compared to those with isolated math difficulties. The purpose of this study is to examine whether isolated math difficulties, isolated reading difficulties and comorbid math and reading difficulties can be linked to deficits in number sense, phonological ability or both of these, and whether comorbid math and reading difficulties differ in performance in mathematical tasks compared to isolated math difficulties for children in second grade.

Heart failure is a condition where the heart is incapable of providing adequate blood supply to different organs in the body. The underlying causes of heart failure is some kind of disorder in the heart function, and require careful diagnostics. The basic symptoms that arise from heart failure is difficulty in breathing, that aggravate when lying down, and fatigue. The patients? symptoms and impaired quality of life can be in different stages depending on the severity of the heart failure.

Samarbetet inom Europeiska Unionen har inneburit ett alltmer integrerat Europa. Skapandet av den inre marknaden, en marknad utan handelshinder och med fri ro?rlighet fo?r varor, personer, tja?nster och kapital, inneba?r att privatpersoner och fo?retag i stort ska vara ofo?rhindrade att ro?ra sig o?ver landsgra?nserna. Ett bolag etablerat i en medlemsstat kan exempelvis ha intresse av att flytta till en annan medlemsstat. Av princip kan tyckas att EU-ra?tten, med ha?nvisning till etableringsfriheten, ska mo?jliggo?ra en sa?dan allokering utan att bolaget ifra?ga tvingas utsta? na?gon negativ sa?rbehandling.

Akademiska hus is a real estate company that specializes in providing Swedish universities with housing facilities for educational and research purposes. The company strives to reduce its use of energy by 40% between the years 2000 and 2025. The aim of this thesis is to determine which measures can be taken to reduce the need of purchased energy in a building that is used by theSwedishUniversityof Agricultural Sciences inUppsala.In order to determine the results of various changes to the building envelope and ventilation system, the building was modelled in the computer simulation program VIP-Energy. Other proposed changes to make the use of energy more efficient concerned water use and lighting. The need of purchased energy can also be reduced by producing electricity or heat on site, using solar energy.Results show that economically viable measures include upgrading windows and faucets, adjusting control systems for ventilation and lighting, and installing roof mounted solar panels for power production.

Vindkraftverk ansluts idag i snabb takt till elnät runt om i världen. Elnäten är ofta inte tillräckligt dimensionerade på platser där vindkraftutbyggnad är lämplig vilket leder till ett behov av nätförstärkning. Förstärkning sker konventionellt genom att övergå till en högre spänning, något som kan vara förenat med stora kostnader och ledtider. Bland annat därför har en filosofi med beteckningen smarta elnät uppstått, som handlar om hur elnätsystemet ska se ut när det är mer anpassat till de nya energikällornas karaktär och samtidigt medför ett mer effektivt totalutnyttjande. För vindkraftverk kan det då handla om att i högre grad än idag reglera produktionen och understödja nätet, t.ex.

Bergvik Skog is one of the leading forest companies in Sweden who use airborne laser scanning for forestry information. They utilize laser data retrieved by the Swedish National Land Survey to describe the forest holdings and facilitate planning for thinning and final felling operations. However, the possibility to identify stands with clearing needs by using laser scanning data has not been tested in a large scale. The data used in the current study are field data from The Swedish National Forest Inventory in combination with laser data from the Swedish National Land Survey acquired in 2009. The collected data is used to find one or several laser variables that best describe the relationship of the field measured samples with clearing needs.

Freedom of establishment statutes that restriction of citizens within the EU can not occur. A citizen should be free to establish themselves in a Member State and not be hindered if they choose to leave the State. "Citizens" also includes legal persons such as companies. Legislations in Member States which prevents the freedom of establishment shall be prohibited. When a company chooses to merge across borders and thus cease to be a Swedish company, the Swedish rules for exit taxation applies.

Småföretag utgör 99 % av totalt antal företag i Sverige, och därmed är småföretagandet viktigt för det svenska näringslivet. Banklån utgör idag den vanligaste externa kapitalkällan för småföretag som söker finansiering och då det innebär risk för bank att låna ut pengar krävs det en finansiell bedömning av bankens handläggare för att bedöma risken. Finansiell bedömning kännetecknas av informationsasymmetri, och för att kunna hantera problematiken med informationsasymmetri fordras det att handläggare samlar in och tolkar signaler från småföretag. Då det finns utrymme för bankens handläggare att tolka småföretagens signaler är det relevant att studera hur handläggares kunskapsstrukturer påverkar finansiell lånebedömning. Syftet med denna studie är att skapa förståelse för hur kognitiva kunskapsstrukturer kan tas sig uttryck i bankhandläggares finansiella bedömning av småföretags låneansökningar, detta genom att (1) identifiera centrala signaler i bankhandläggares finansiella bedömning av småföretags låneansökningar, och (2) utveckla en modell bestående av strategier för hantering av signaler i finansiell bedömning för bifall och avslag av småföretags låneansökningar.

Syfte och frågeställningarSyftet med studien var att undersöka effekten av en kortisoninjektion i bäckenligamenten på patienter med långvarig ländryggssmärta.MetodStudien genomfördes utifrån en single-subject experimental design med sex deltagare med långvarig ländryggssmärta. De utfallsmått som användes var smärtskattning (Numerical Rating Scale, NRS), skattad smärtrelaterad aktivitetsbegränsning (Oswestry Disability Index, ODI), skattad rörelserädsla (Tampa scale of kinesiophobia, TSK-SV), rörlighet (Fingertip-to-floor), funktion genom ett dynamiskt balanstest (Star excursion balance test, SEBT), funktionstest (sit-to-stand) och uthållighetsstyrketest (modifierat Biering- Sørensen), samt fysisk aktivitetsnivå mätt med accelerometermätare. Deltagarna genomförde fem testtillfällen innan och fem eller sex testtillfällen efter intervention. Vid sista besöket skattade deltagarna förändring av besvär enligt global index of change. Resultaten analyserades på individnivå genom visuell analys av trender och nivåskillnader i grafer, statistisk analys av graferna genom 2 SD-metoden, i kombination med deltagarnas subjektiva beskrivningar av eventuell förändring.

The aim of this study was to map and date glacial flutings with ice flows deviating from the predominating northwesterly ice flow direction in the southern part of Norrbotten County in northern Sweden, and also to investigate if parts of the glacial landscape are older than previously thought. The traditional view is that most landforms in the area were formed during the late Weichselian (W3). Analysis of the new high resolution elevation model (2 m grid) derived from laser scanning was performed after treating the data with a hillshade tool in ArcMap to reveal terrain features such as flutings. The analysis resulted in a map showing four main groups of deviating ice flows (N-S, NO-SV, SO-NV and S-N) and several westerly ice flows. The majority of flutings with deviating ice flows were found in low terrain.