Vertical hydropower units has a rotating mass of up to 1000 tons. For the generator and turbine to work well the rotating system is required to be centered in relation to the surrounding structure. This is achieved by means of radial bearings. The dynamic characteristics of these bearings have a strong impact on the overall rotational dynamics of the total system and thus influence the vibrations in the unit. At Vattenfall Research & Development in Älvkarleby ongoing research is taking place on how the bearing parameters should be represented in the rotor dynamic calculations.

In the post-war era many European countries were recovering from the ravages of the bombings of the second world war destroying whole countries. Sweden being neutral was spared the destruction of war but instead we demolished almost as much housing all by ourselves. A social program was modeled to modernize the country and to drag the swedes out of poverty by building one million apartments in just ten years and demolishing the old, dilapidated working-class neighborhoods. The traumatic events of the demolition of large areas of both the central and the outskirts of most Swedish cities is still very much present in the collective memory of people today and the new modernistic districts are still paying the price of that, more than fifty years later. Today these modernistic districts are in need of repair, and they are often homes to groups alienated from society making their reputation even worse.

This master thesis is made of two parts. The first part concerns the method and results ofdesigning a motion control system for a piece of research-equipment called BIRGIT. Theequipment is made to be used for research on eyemovements. In the second part, a computermodel of a part of the balance organ in the inner-ear is developed. The work has been done atthe Bernadotte laboratory at S:t Erik Eye Hospital.The equipment the control system is made for is a so-called rotationchair.

I have always lived around mines and around people work­ing with mines. They are a natural part of my life and, inev­itably, a great interest of mine. When time came to make a decision for a degree project, focusing on the mine context felt as natural as breathing.In LKABs underground mines, safety in fire accidents is a great priority. Of outmost importance for the escape is to have a personal gas filter for filtration of smoke and/or gas. My design project resulted in a concept which is aimed at shortening the user journey from the start of the accident until the user has applied the personal safety solution and is ready to escape.Throughout the project I?ve been working with a context which is heavily regulated, and all problems are serious, important ones.

Arbetet har utförts på Saab Bofors Dynamics AB i Linköping och dess syfte är att undersöka möjligheten att applicera teorin för prediktionsreglering, Model Predictive Control (MPC), på guidance systemet i en missil av typen Medium Range Air-to-Air Missiles (MRAAM). Även implementering via Explicit MPC har undersökts. I tidigare studier har det visat sig att den moderna slutfasstyrningsalgoritmen Linear Quadratic Augmented Proportional Navigation (LQAPN), som återkopplar missilens acceleration och rotation, uppvisar en bättre prestanda än de mer klassiska styrlagarna. Det främsta intresset med denna studie är därför att undersöka hur tillvida en styrlag baserad på MPC kan mäata sig med dessa resultat. Fördelen med att använda MPC är framförallt att man kan ta hänsyn till styrsignalbegränsningar på ett direkt och intuitivt sätt.

Det första steget i produktionskedjan för trävaror är skördaren vars uppgift är att avverka och sönderdela träd. Sönderdelningen till stockar baseras på sågverkens beställning som innehåller information om önskad längd och diameter. Diametermätning i skördare genomförs idag med berörande teknik som i takt med att kraven för träproduktion ökar kommer vara tvungen att förbättras alternativt bytas ut.I tidigare studier har beröringsfri diametermätning med lasertriangulering genomförts som visar att en ökad mätnoggrannhet går att uppnå, men att robustheten för ett sådant system måste öka för att kunna användas i praktiken. I studierna föreslås förbättring av mätsystemets algoritm som ett naturligt nästa steg för att öka robustheten.I detta examensarbete utvecklas en algoritm som med mätdata från det ovan nämnda systemet strävar efter att göra en robust diametermätning. I algoritmen löses två delproblem där det första är att identifiera bra mätdata genom sökning och eliminering av extremvärden och det andra är att anpassa en trädmodell för att utifrån denna beräkna diametern.

Development in spin dynamic occurs in the whole world because of therising demands on fast electronic storage for example hard drivesand RAM (Random Access Memory). Measuring the spin resonance of amaterial gives you the insight of the theoretical speed for amagnetic memory. This means the maximum storage speed is below thefirst resonance. All magnetic materials have different propertiesthat will inflict the resonance frequency which brings that theconstructors of memories need to know which magnetic material theywill use to obtain best results. In the market for normal users themaximum storage speed in a RAM memory is 1.6 GHz.

This thesis scrutinises the material on post World War II Swedish architecture produced by the Swedish Public diplomacy organisation "Svenska institutet" ("The Swedish Institute") during the period of 1945 through 1976. The outset is the dilemma encountered by every such organisation: how can the projected narrative of the own nation relate to as many countries as possible, without becoming too general? And how can the organisation address specific countries, without excluding others?By employing a two-sided model of interpreting the material, where it on the one hand is interpreted from the universal properties projected on the narrated architecture, and on the other hand from the particular ideological notions related to the same, the thesis suggests that the Swedish Institute continously relates the architecture to a West-European and American context by consistently connecting its universal properties to particular ideological notions orientated towards the West.The results underline the malleability in regard to ideological notions connected to modernist architecture. Earlier research in the Swedish context has focussed on how modernist architecture in Sweden, under the local tag "funktionalism", was established in regard to a Swedish audience as a particular Swedish architecture by relating it to a alleged continuos Swedish tradition, as well as to notions of a a progressive welfare state. By studying a similar material, though aimed towards a foreign audience, the thesis suggests that these allegations constitue an elucidatory example of how national and ideological narratives can form within the framework of technological-ideological dynamics of modernist architecture.

Arkitektfirman Kolman X Boye Architects har fått uppdraget att upprätta bygglovshandlingar för ett äldreboende. Det är ännu ej bestämt i detalj hur byggnaden skall uppföras men beställaren önskar att byggnaden uppförs i träbyggnadsteknik. Äldreboendet projekteras för 54 stycken lägenheter fördelat på sex stycken våningsplan och en total bruttoarea på strax under 6000m2. Ingen lika hög träbyggnad med denna verksamhetsklass avseende brand har tidigare uppförts i Sverige.Vår uppgift och utmaning i detta arbete har varit att reda ut problematiken kring projekteringen av exteriöra detaljer för höga hus i trä. Utifrån kända problem avseende brand, akustik och fukt har sedan ett antal detaljer som påverkar det estetiska uttrycket projekterats.

Brownout-fenomenet ligger till grund för ungefär 75 procent av alla flygolyckor inom NATO. Olyckorna sker under start och landningssekvenser i torra klimat då sand virvlar upp och försämrar pilotens sikt utifrån helikoptern. Under brownout förlorar piloten visuella referenser utanför helikoptern vilket gör att denne omedvetet kan tappa kontrollen över helikoptern och således kan hamna i plötsligt drift. Därför har NATO i samarbete med bland annat Totalförsvarets Forskningsinstitut (FOI) försökt finna en lösning på problemen som uppstår vid brownout. Syftet med föreliggande studie är främst att undersöka om deltagares användning av taktila driftdisplayer leder till mindre drift än vid användning av en visuell driftdisplay samt undersöka med vilken av de taktila displayerna som leder till minst drift.

Aim: Team spirit is a concept often used in both managerial literature and in other contexts where the efficiency of a group is discussed. Despite the fact that team spirit is used as a selling point for courses, books and seminars, no unambiguous definition of the term is available. The purpose of this thesis is to clarify what team spirit means to individuals within companies and team sports. Method: The thesis has been carried out using studies of available literature, which has been compiled into a conceivable model of what team spirit may imply. From this model a poll has been made, and handed out to individuals within companies as well as team sports. After having compiled the 37 replies, correlating answers has been sought after within each group of respondents. Result & Conclusions: The result shows us that there are varying opinions of what team spirit is, and generally accepted definitions of closely related ideas like cohesion and group development has to the respondents not been able to form a satisfying description of what team spirit means.

Who will win? Popular and literary framing in media coverage of Nobel Prize in Literature by Magnus Wennerberg Autumn 2013Instructor Mats Ekström The question at issue in this essay is how does mass media frame Nobel Prize in Literature? The starting point is to study whether game framing is occuring in media coverage of Nobel Prize in Literature. Previously, game framing has been studied in coverage of politcs, contrasted against issue framing. Game framing means that media frame politics as a game, a contest between politicians about power. This kind of framing is supposed to be used by media in purpose of attracting larger audience.

I have, with a point of departure in two case studies; the artist, curator and scientist Andreas Gedin and Maria Lind, curator and director of Tensta konsthall, contextualized with a couple of respondents; the freelance curator, writer and editor Power Ekroth and the freelance curator and artist Carl Michael von Hausswolff, conducted a field analysis on curatorial and artistic practices. I have applied key concepts in order to conduct the analysis.Furthermore, the case studies and the respondents have been placed in a contemporary artworld. These components have been related to a contemporary historical segment of the artworld. This in turn, has been related to older, international cicumstances of change and various conditions in the two subfields. I have suggested certain a proximity in the artistic and curatorial practices.

Periods of hypoxia are a recurring issue in Brunnsviken. Main factors that trigger hypoxia in Brunnsviken are eutrophication  due to anthropogenic emission of nutrients, stratification in the water column due to salinity and temperature differences  that prevents mixing and a sill inlet that prevents water exchange. As an attempt to improve the oxygen levels, bottom water is pumped from Brunnsviken causing aerated surface water to flow back into the basin.  The objective of this Master?s thesis was to study the change in dissolved oxygen levels due to pumping.

Beredskapsenheten på länsstyrelsen i Värmland driver ett projekt om risk och sårbarhetsanalyser i länet som benämns ?Säkerhet i Värmland?. Detta examensarbete studerar skogsbränder utifrån ett riskperspektiv och är ett led i projektet. Målen med studien är att åstadkomma en riskmodell för skogsbränder som kan användas vid planering på lokal- och regional nivå i samhället. Studien delas upp i två delar.