Comfort analyses regarding human induced vibrationsIt is not too common among civil engineers in Sweden to perform comfort analyses considering the vibrations caused by human activities. In addition, the Swedish standards lack requirements to be used for comfort analyses in design of floor-systems. The demand for large spans in combination with slender slabs, is today a reason to investigate the floor-system constructions, in order to prevent disturbing vibrations and oscillations.The purpose of this thesis is to create a guide for how a comfort analysis, considering vibrations, should be implemented. Göran Svedenbjörk who is an expert in structural dynamics has been interviewed where he presents his latest project Värtaterminalen and answers some questions about vibrations due to human activities.Floor-systems, consisting of concrete slabs supported by steel or concrete beams, have been investigated with simulations in the finite element program Abaqus. In the simulations, the influence of various factors on the natural frequency of floor-systems and the acceleration level caused by dynamic loads, is studied.

The power system modelled in this thesis work has been developed for simulationwhen e.g. the production in some part of the power system is changed. The powersystem has been modelled according to the swing mass of the system, the frequencydependency of the load and the turbine governor. The model determines the systemfrequency, the period of regulation and the power exchange between the differentsubsystems in the Nordic synchronized system.In this model the system frequency is assumed to be the same in all different parts ofthe power system and the voltage conditions in the power system are neglected. Forthat reason power swings does not occur between different subsystems in the powersystem, which usually occur as a result of the swinging connection between thetransmissions line.

Passive houses are a relatively new concept in Sweden and by that it is meant a house without a traditional heating system. The most acknowledged passive house project is the terrace houses in Lindås, Gothenburg, which we have used as a reference. This project concerns a square apartment block. So far, no square apartment block has been built as a passive house in Sweden.The common opinion in the construction industry is that it is not economical to build extremely energy efficient houses. With Peab as commissioner our task was to investigate if that is true, if regarding the construction of a multi storey house as a passive houseMidroc, now owned by Peab, constructed in the block of Preussen in Jönköping during 2004-2005 four houses, with 132 apartments distributed on seven floors.

In this essay I will analyze how the poor relief was used in Eskilstuna during the years of 1883 to 1913. In the records over who took allowance from the authorities it will also be mention the year of birth, which block the person lived in, sometimes if that person had any children, and if the person was a women it was often written down what profession the (often dead) husband have had when he was alive, or as an alternative what the fathers profession had been and finally its notified how much the person had every month in allowance.I want to see how the poor relief changed over time. I will do four close checkups, i choose the years 1883, 1893, 1903 and 1913. I will read in the records and compare how many it was that needed the poor relief for that year and further on I will mark out where these people was living in Eskilstuna city. For that propose I will use a map from 1890 and mark out every block in town that received the allowance.

Between 1965 and 1974, the Swedish Parliament decided to build one million dwellings, called Million Program. The million program buildings were erected with new, untried design solutions, in a short range of time, and at low cost. The residential buildings from that time are now greatly in need of renovation. The municipal housing company, Gavlega?rdarna, renovates and improves the energy efficiency at some of it?s apartment buildings in the district Sa?tra, Ga?vle.

The trend in the transport sector is moving towards eco-friendly, fast and convenient transportation,this results in higher demands on railway transports. To meet the demand and quality requirements,the Swedish railway network will have to expand. The cheapest way is to expand little by little butwhat impact do these small steps actually have on the capacity?This thesis examines the interactions of different improvement for the capacity on a single-trackrailway. Through simulations in the software tool RailSys this report studies what effect block signals,extra meeting stations and rebuilding existing two track passing loops to three track loops have onthe capacity.

Syftet med denna studie var att undersöka skiftavlämning i tre kontrollrum på kärnkraftverket OKG utifrån attityder, tillit och procedurer. OKG beskriver sin säkerhetskultur som att all personal kan känna sig bekväma med att ifrågasätta och där hög tillit skall verka för att skapa ett öppet klimat. Tidigare forskning har visat att relationen mellan säkerhetsklimat och inställningen till avlämning är beroende av tillit (Kath et al., 2010). Studiens mål är att resultatet skall ge förslag till förbättringar eller förändringar till dagens arbetssätt kring skiftavlämning.Studien är genomförd som en fallstudie av explorativ samt jämförande karaktär och har en innesluten multipel enhets design. Datainsamlingen utfördes genom observationer samt semistrukturerade intervjuer.

The development in photogrammetry has created possibilities for new methods in aerial images acquisition. Remotely-controlled imaging from an unmanned helium zeppelin is a new and relatively unexplored acquisition. The purpose with this degree project is to evaluate the accuracy of this kind of low-height photographing system, a task given from the consultant company WSP, in Sweden. Landbadet in Uddevalla municipality was chosen as a test field for the zeppelin. Seventeen images distributed over three strips were acquired from the flying height of 80 m.

Background: Infectious Diseases Institute points out that the potential of various viraldiseases possibly can block each other. It is said that the virus that causes common cold,Rhinovirus, may have saved many people from the flu. If this assumption proves true, itwould explain why some viral diseases in some countries have been slow to take off and pointto a new way to struggle influenza. Objective: The main purpose of this study, based onreported cases of RSV and influenza type A, type B and H1N1, investigate whether viraldiseases can block each other, i.e. difficult season of flu may delay and / or mitigate thespread of RSV in Sweden.

Uppsats för avläggande av filosofie kandidatexamen iKulturvård, Bebyggelseantikvariskt program15 hpInstitutionen för kulturvårdGöteborgs universitet2013:23.

Examensarbetet har utförts vid Boliden Mineral AB dagbrott i Aitik under perioden 2011-03-28 till 2011-06-01. Syftet med examensarbetet var att göra en utvärdering av pallsprängning lutande borrhål för att se om fragmenteringen förbättrades. Dessutom studera andra effekter som påverkas av fragmentering, t.ex. antal icke hanterbara block (stenar större än 1m3), flöde i primär krossanläggning och grävbarhet. Studien genomfördes genom att en försökssalva sprängdes, där en del av borrhålen var vertikala och den andra delen bestod av lutande borrhål.

Syftet med denna uppsats är att undersöka hur säkerhetsinformation kan presenteras så att operatörerna snabbt skall kunna upptäcka och urskilja den. Olika färg-kombinationer kommer att jämföras för att komma fram till om någon kombination är mer effektiv för den initierande uppmärksamhetsprocessens visuella sökning än någon annan kombination.Ett fältexperiment utfördes på Ringhalsverket block 2 där 24 operatörer fick köra ett testprogram som visade olika skillnader i färgnyans. När försökspersonen kan urskilja det specifika målet på testbilden trycks mellanslagstangenten ned. Det är reaktionstiden som mäts från det att testbilden kommer fram tills tangenten trycks ned. Det förväntade resultatet att de stora nyansskillnaderna var effektivare än de mindre får inte fullt stöd ifrån resultatet.

Syfte: Syftet med denna systematiska litteratur?versikt var att unders?ka om intaget av probiotika minskar symptomen vid diagnostiserad atopisk dermatit (AD) m?tt med SCORing Atopic Dermatitis (SCORAD), hos individer sex m?nader till 19 ?r. Metod: Litteraturs?kningen genomf?rdes i databaserna PubMed och Scopus. S?kningen genomf?rdes som en avancerad s?kning med fyra s?kblock. Block ett riktades mot populationen, block tv? mot AD och block tre mot probiotika.

The aim of this study is to find a method to incorporate the energydemand of a building in the investment cost estimate.The study is based on an actual apartment block. The significant energyaspects are identified, and changed to more energy efficient options.These are then simulated using the energy calculation program VIP+.The calculated energy need is used in the investment cost estimate, andthe simulated alternatives are compared in regards to their economicalprofitability.Depending on the focus, different alternatives are the most advantageous.Since this study aims to show which alternative is the mosteconomically profitable, the annual profit is the parameter of mostimportance. This means that individual measuring of heating and hotwater use is the recommended change of the original house. A changeof the windows to new ones with a U-value of 1,0 as well as 0,8W/m2K also results in a positive change of the annual profit comparedto the original house..

Fjärrvärmebranschen i Sverige har sedan mitten av 1990-talet varit i en stagnationsfas, där mängden producerad och förbrukad energi i stort sett varit konstant, trots stora investeringar i fjärrvärmenätet. Samtidigt har den höga andelen återvinning gjort att det råder brist på avfallsbränsle till energiåtervinning i Sverige. I kombination med hög konkurrens om avfallsbränslet har detta medfört att aktörerna på marknaden tvingats se sig om efter nya vägar att tillfredsställa behovet av bränsle, vilket lett till att det idag importeras stora mängder avfall för energiåtervinning från utlandet. Vid Vattenfalls fjärrvärmeverk i Uppsala har det mellan åren 2006-2013 återvunnits i snitt drygt 360 000 ton avfall per år. En stor del av detta hämtas in från lokala kunder, både kommuner och privata aktörer, men man har på senare tid även behövt börja importera avfall för att tillfredsställa energibehovet.