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Vidareutveckling av provplattform för mätning av kosmisk strålnings inverkan på DRAM
Sammanfattning: SAAB Communication i Linköping sysslar med konsultverksamhet mot ett flertal nationella och internationella företag inom både den civila och militära sektorn. Fokus ligger på flyget med uppdrag inom telesystem, radiosystem, signaturanpassning, EMC, atmosfärisk påverkan mm. I det sistnämnda ingår även kosmisk strålnings inverkan på elektronik. Den fortsatta miniatyriseringen av elektronik, speciellt minneselektronik leder till ökad känslighet mot den kosmiska partikelstrålningen som ständigt regnar ner på jorden, därför är det extra noga att minnen testas innan de sätts i bruk vid flygburna system. Syftet med detta examensarbete är att konstruera en provplattform som registrerar fel som uppkommer i ett DDR2 SDRAM minne vid påverkan av den ovannämnda strålningen.
BIM för Hållbart Byggande
The purpose of this study is to facilitate sustainable building by the use of BIM. The goal is to determine which aspects of sustainable building, which can be analyzed mainly with BIM tools, but also other aids.The study is based on literature studies and interviews. The literature review examines aspects important for sustainable building by studying environmental certification systems applicable in Sweden, as well as the BIM tools available on the market to analyze these aspects. The literature also includes the concepts of BIM and sustainability in order to provide a clearer view of its meaning. The interviews have brought the study's overall understanding of the industry and guidance on the subject.The results are presented in a table, where the aspects relevant to sustainable building are listed.
Värderar venture capitalbolag koncerngoodwill och har värderingen påverkats av införandet av IFRS 3: en fallstudie av fyra venture capitalbolag
Goodwill är ett omtvistat ämne inom redovisning. I dagens samhälle har företag haft friheten att kunna välja vilken regel i anknytning till goodwill de vill använda och det med hänsyn till vilket resultat de eftersträvar. Våren 2004 offentliggjorde International Accounting Standard Board en ny standard, IFRS 3 för redovisning av företagsförvärv. IFRS 3 går ut på att goodwill inte längre är föremål för planenliga avskrivningar utan istället ska företag genomföra ett ?impairment test? som innebär att företagen genomför en ingående analys av goodwillvärdet årsvis.
Sambandet mellan kondition och självskattad hälsa
ABSTRACT Background: Health and ill-health are multifaceted concepts. Previous research has shown that physical activity and the level of cardio respiratory are important parts of leading a healthy lifestyle. Possibly, it?s so important that the Occupational Health Service should focus even more on this.Aim: The aim was to investigate if there was a relationship between the level of cardio respiratory fitness and self-rated health, and between the level of cardio respiratory fitness and physical and mental ill-health.Method: The study was conducted using a quantitative method in the form of a cross sectional study. Data was collected from an Occupational Health Service, containing answers to a questionnaire on work environment and health and test values ??from completed cycle fitness tests.
Relation mellan optimism, self-efficacy och självskattat hälsotillstånd hos kvinnor och män
Tidigare empirisk forskning förevisade samband mellan optimism och hälsa, likaså mellan self-efficacy och hälsa. Föreliggande undersöknings syfte var att utifrån könsskillnader mellan kvinnor och män undersöka hur optimism och self-efficacy samverkar med deras självskattade hälsotillstånd. Deltagarna var 190 högskolestudenter, varav 113 kvinnor, i Mellansverige. Statistisk analys utfördes genom t-test, multipel linjär regressionsanalys och jämförelse mellan korrelationskoefficienter. Mätinstrumenten Life Orientation Test?Revised, General Health Questionnaire och General Self-efficacy Scale, samt ett påstående om fysisk hälsa användes.
Det subjektiva välbefinnandet på arbetsplatsen : Effort-reward imbalance modellen inom handels
Följande studie avser att undersöka relationen mellan engagemang, belöning och välbefinnande på arbetsplatsen. Siegrist (1996) förklarar sambandet genom Effort-Reward Imbalance model (ERI), något som denna studie kombinerar med Dieners (1986) teori om subjektivt välbefinnande. 156 personer deltog i enkätstudien, där 97 var kvinnor. Enkäterna var utformade med påståenden där deltagarna fick skatta sina svar. Datan analyserades genom en multipel regressionsanalys, korrelationer och t-test.
Kravhantering i praktiken : Fallstudie av arbetet med kravhantering vid framtagning av nytt biljettsystem
Kravhantering a?r en viktig del av systemutvecklingsprocessen. Genom att samla in, analysera och prioritera krav skapas en tydlig bild av hur ett framtida system ska fungera. De krav som faststa?lls kan anva?ndas fo?r utva?rdering av fo?rslag fra?n leveranto?rer och senare i systemutvecklingsprocessen fo?r utva?rdering av prototyper.
En jämförelse mellan TLS och UAV-fotogrammetri : Inmätning av hårdgjorda ytor
At present day there are several different methods for measuring of paved surfaces.The most common methods today are measuring with a total station, the GlobalNavigation Satellite System (GNSS) and terrestrial laser scanning (TLS). Recently thedevelopment of unmanned aerial vehicles, known as drones, has increasedexponentially and today there are several ways of using drones for measuring surfacesby photographing and laser scanning.This thesis contains a comparison between the methods terrestrial laser scanning(TLS), and unmanned aerial vehicle photogrammetry (UAV). The measurements havebeen applied on two different test surfaces, one of asphalt and one of gravel. Thepurpose of the comparison is to investigate whether the airborne photogrammetry isequivalent accurate in its height levels as the terrestrial laser scanning. For thecomparison to be more extensive, these two methods have not only been comparedin precision but also in the areas of ease of use and economy.The precision was analyzed by comparing the height levels in randomly placed controlpoints on the test surfaces.
Visuomotorisk utveckling mätt med Bendertestet : En jämförelse mellan för tidigt födda och fullgångna barn vid 5 1/2 års ålder.
SammanfattningBarns utveckling under de sista förskoleåren är nyckeln till en bra skolstart. Visuomotorik är en av de faktorer som krävs för att tillägna sig skolans basfärdigheter. För tidigt födda barn är en grupp som enligt tidigare forskning löper risk för en sämre visuomotorisk utveckling. I den här studien mättes visuomotorik med Bender Gestalt Test med utvärderingssytem utvecklade av främst Elizabeth Koppitz (1963, 1975). I studien jämfördes för tidigt födda barns (n=175) och matchade fullgångna barns (n=125) Bender-resultat vid 5½ års ålder.
Kulturens Bokhylla
?A culture center should be visually welcoming as well as attract a diverse range of visitors with different backgrounds.? This was the client?s request for a new cultural center in Nairobi. The location is in the heart of Nairobi?s industrial area, near several existing buildings that are already in use by the culture organization known as Go Down. I have chosen to keep most of the existing buildings and to use my new building as a complement for the desired program.
Hur viktig är statens styrka för ekonomiskt välstånd?- En studie av alla världens länder
What role does the state play in economic development? This thesis seeks to investigate the relationship between a strong state and economic development. To define the concept of a strong state I focus on the relationship between the scope of state functions and the efficiency of which these functions are implemented. The concept of a strong state is in this thesis defined as the efficiency of the state functions. By using a database constructed by three economists; David Kaufman, Aart Kraay and Massimo Mastruzzi as a measurement of a strong state I test the relationship with economic development empirically.
Comparison between different freezing and thawing methods for human spermatozoa
Preservation of cells and tissues by freezing at temperatures below 70°C has led to new possibilities for the storage of germ cells for fertility preservation. During the freezing process problems might occur, the greatest being ice crystallization which can cause membrane destruction and thus cell death. To minimize this risk, solutions that reduce the freezing point can be added to reduce crystallization and increase survival rates. These solutions are called cryoprotectants. The best method for freezing is still not known.The aim of this study was to analyze the effect of various parameters on the survival rate of human semen frozen with liquid nitrogen.
Historia skriven i sten? : Bruket av Kensingtonstenen som historiekultur i svenska och amerikanska utställningsrum
The aim of this master thesis is to analyze how and why Scandinavian-American history has been used in exhibitions in both Scandinavia and the United States after the end of the Great Migration. More specifically, the thesis deals with the Swedish and American exhibitions of the controversial Kensington Rune Stone, discovered in Minnesota in 1898. Despite the fact that its authenticity has been disputed by academic expertise, it has been displayed by many prominent actors. The Rune Stone is one of many purportedly pre-Columbian artifacts found in the United States. Moreover, it is an identity marker, harboring many kinds of identity constructions. The thesis therefore focuses on the meanings that the Rune Stone has been charged with since its discovery, as historical culture and in specific exhibits, on how it has been displayed, and on why it has been exhibited at national museums in both Sweden and the United States. The principal source materials are five exhibitions of the Kensington Rune Stone.
Bland smuts och andligt förfall : Svenska Missionsförbundets Kina kring sekelskiftet 1900
The purpose with this thesis is to analyse the image of the Chinese that was constructed and maintained in the materials published in association to the Swedish Mission Covenant Church (SMF) missionary work in China between the years of 1890 to 1914.The analysed material is mainly from the periodical Missionsförbundet, the analyse also include various books, biographies and anthologies. Inspired by Michel Foucault I found my methodological starting point in his discourse term. Frome there, by the help of the texts of Torjer A. Olsen, I constructed a discourse analyses, by which I analysed my materials.The survey showed that the material associated to SMF foremost constructed a negative pictureof the Chinese as unclean, conservative, arrogant, liars, greedy, loud, bad singers and that the woman situation was seen as untenable. A more appreciative picture also emerged and the Chinese was described as polite and strong.
Utformning av ett materialflödessystem anpassat för HSP-Gripens produktion
Like many small-time companies there is a need to improve the flow of materials at HSP-Gripen AB. The company develops and manufactures hydraulic-powered grapples for the machine- and forest industry. By mapping the material flow in the current production and gathering necessary data, suggestions on how different parts of the production could be controlled is presented in this dissertation. This has been achieved by the study of relevant scientific literature. The suggested ways of controlling the production consist of 2-bin systems, hybrid material flow system as well as a cyclic product-planning.