Den tekniska utvecklingen har lett till att massiva mängder av information sänds, i höga hastigheter. Detta flöde måste vi lära oss att hantera. För att maximera nyttan av de nya teknikerna och undkomma de problem som detta enorma informationsflöde bär med sig, bör interaktionskvalitet studeras. Vi måste anpassa gränssnitt efter användaren eftersom denne inte har möjlighet att anpassa sig till, och sortera i för stora informationsmängder. Vi måste utveckla system som gör människan mer effektiv vid användande av gränssnitt. För att anpassa gränssnitten efter användarens behov och begränsningar krävs kunskaper om den mänskliga kognitionen.

The purpose of this thesis is to bring forward and discuss the American vision for space exploration found at NASA's homepage, how the vision is popularised and why. NASA's homepage is analyzed as popularized science and the theoretical perspective emanates from the field of popular science and especially the work of Johan Kärnfelt. The historical reference is made up by Howard E McCurdy and he's thoughts about space and the American imagination. The analysis is based on a number of documents that popularize the vision for space exploration and is intended for the public. These documents describe the future plan for NASA and US space exploration..

The thesis presents an optimally designed kinematic structure for a new 6-DOF haptic devicebased on TAU configuration. The configuration of the TAU-2 proposed by Suleman Khan andKjell Andersson [1] was modified and its mobility was verified by using Grübler criterion tohave a 6 DOF. Analytical kinematic models for the inverse and forward kinematics weredeveloped for the haptic TAU configuration to determine a set of optimal design parameters.Kinematic performance indices such as volume of the workspace, kinematic isotropy and payload index, were defined based on the singular values of the Jacobian matrix. The Jacobianmatrix was scaled to homogenize the physical units. The Jacobian matrix dependent on theposition and orientation of the end-effector gives local isotropy and pay load index, so globaldesign indices were defined, which represent the performance of the mechanism in the wholeworkspace.

In this thesis, it is investigated if it is possible to create a common factor of the work tasks done by an air traffic controller, which then can measure workload. This will lead to the development of a tool to measure workload at small airports. In the research project a questionnaire is created to measure the different tasks an air traffic controller has. The same questionnaire will also measure the number of environmental factors that exists around the air traffic controller. To measure the validity of the questionnaire, the authors are using NASA-TLX.

This report is a Master?s Thesis performed by Andreas Adolfsson and David Jacobsson atChalmers University of Technology. The purpose of this master?s thesis is to evaluate anew method for load-shedding, the voltage controlled underfrequency load-sheddingdeveloped by ABB. This report presents a comparison between conventionalunderfrequency load-shedding and this new method for load-shedding.

The purpose of this essay is to evaluate stock index bonds return to risk ratio in order to investigate to which degree an investor in a stock index bond take part of the underlying index return and what the investor must pay for the security of not losing his funds. In order to carry out this evaluation an average return per year and the Sharpe ratio will be calculated and a mean- standard deviation analysis will be made. All investigated stock index bonds are based on a Swedish underlying asset.The results show that the stock index bonds haven?t generated a higher risk adjusted return than its underlying asset. The stock index bonds took part of 57 % of the underlying assets return, and the loss of 10 percentage points per year for the stock index bonds compared to its underlying asset can be seen as the cost for the guarantee a stock index bond gives..

Denna uppsats syfte är att förklara den svenska elmarknadens konkurrenssituation med Lerner index och Herfindahl index. Genom att estimera priselasticiteten med en ekonometrisk modell som logaritmerats kunde dess värde skattas fram. Vidare har denna elasticitet använts för att skatta fram Lerner index. Avslutningsvis har ett Herfindahl index beräknats för att mäta marknadens koncentration. Resultatet från empirin visar existens av marknadsstyrka på elmarknaden och att den är oligopolistisk..

The aim of this study is to evaluate whether the value of occupant load is over or under estimated when the Swedish general value for department stores, 0,5 person/m2, is used for dimensioning shopping centers. The data that was analyzed derives from seven shopping centers and one department store. A conservative method was used to calculate the occupant load factor. The analysis shows that two groups can be discerned: one group that is characterized by a lower occupant load factor that does not exceed 0,3 person/m2, and one group with a higher occupant load factor. Shopping centers with a higher occupant load factor are located centrally in large urban areas.

Syftet med denna uppsats är att undersöka ett oviktat index relevans som jämförelsemått för aktivt förvaltade fonders avkastning och förvaltares förmåga att hitta vinnaraktier. Arbetet använder sig av en kvantitativ metod för framtagning av ett oviktat index (SUWX 100) som inkluderar de 100 största företagen på Stockholmsbörsen. Analysen av kvantitativa data är av induktiv karaktär, och använder sig av de Sverigefonder som finns i PPM-systemet för att dra slutsatser kring det oviktade indexet som jämförelsemått. Vår slutsats är att det finns aspekter av ett oviktat index som gör det användbart som jämförelsemått för Sverigefonder..

There are many old dams in Sweden and, since few dams are constructed today, the main task in risk assessment on the existing dams is often to reduce the risk of failure. RIDAS (Swedish Guidelines on Dam Safety) is used when designing new dams and assess the existing ones. The guidelines include stability requirements for different failure modes, e.g. overturning and sliding, which imply that the load effect from e.g. uplift and ice load need to be less than the resisting loads or moments.

In offshore oil production FMC Subsea systems use a product called cap. The cap´s mainly task is to protect hubface and seal areas on inboard hub against dirt, corrosion and mechanical damage under installation of a subsea system. A new model of a cap has been designed and analysed using finite element method. The model is called KC3-12 and has a new function, emergency release, which is a backup method for the ROV (remote operated vehicle) to release the cap from the hubface when it is placed under water. The cap KC3-12 was found to fulfil the criteria under the test load pressure, according to ASME VIII, div2.

The aim of this study was to evaluate the effects on a simulated wastewater plant regarding GHG emissions and use of energy and resources when implementing source separated wastewater systems. The effects were studied for different restrictions of effluent quality and for different temperatures on the influent. The simulation model BSM2G calibrated for Käppala wastewater treatment plant was used. The task was executed by simulating nine different scenarios with an increase in influent load from new connections equivalent to 3, 10 and 30 % of the present connections. These new connections were served by conventional, urine separated or black water separated systems.

Finansiella index är viktade genomsnitt av olika tillgångars avkastning från en bestämd tidpunkt. Traditionella index är börsvärdeviktade. Problemet med denna typ av index är att börsvärdet tidvis kraftigt kan överdrivas på grund av spekulation. Alternativa index bygger på företags fundamentalvärden. De viktas därmed efter företags faktiska redovisade siffror i balans- och resultaträkningar.

Today a lot of goods is transported on wood pallets because it?s practical and enabels a fast way to load cargo. The drawbacks with pallets are that they weight a lot, are big and are relatively expensive. Therefore IKEA has developed plastic lists that can replace the europallet in some applications. In this examwork an automatic handling equipment for plastic lists are design from a requirement specification to a finished machine.

This essay is about democracy and how a democracy index can be used as a tool to illustratethe gap between reality and ideal. The purpose of this study can be expressed by two researchquestions: Does the Economist Intelligence Unit's (EIU) democracy index illustrate thedistance between reality and the ideal of democracy presented by Dahl? and Can the EIU'sdemocracy index be modified by a) internal adjustments and b) using the variables includedin World Economic Forum?s (WEF) equality index?By using a combination of theories (Dahl?s theory of democracy, Rawls theory of justice andchosen theories critical to liberal democracy) as an analytical framework the following twoquestions have been answered:1) Which of the variables included in the EIU's democracy index have the potential to capturethe level of political equality?2) Which of the variables included in the WEF?s equality index have the potential to capturethe degree of political equality?By using a quantitative method the study?s third and last question has been answered:3) How strong is the rank correlation between the EIU?s democracy index and the WEF?sequality index, that is; how strong is the rank correlation coefficient (rho)?The data presented by the WEF?s equality index indicate that women are systematicallydiscriminated against as a group. From a democratic perspective the EIU may need tomeasure inequalities at a group level in order to capture the lack of political equality betweenindividuals. By reformulating some of the EIU?s variables, by revising the EIU?s point systemand by using the variables included in the WEF's equality index to extend EIU?s democracyindex, the chances of capturing the gap between reality and the ideal of democracy presentedby Dahl would likely increase..