Whist is one of the most played card games of the world. Though there have been many studies made in the field of game theory, whist is still somewhat of an unchartered territory. In this thesis some methods to obtain an optimal strategy for whist are discussed. Whist belongs to a group of games called logical games. For this group there exists algorithms which result in an optimal strategy.

Concrete is a very common construction material. It´s characteristics are strength, durability and formablility. Superplasticizer is a common admixture, which changes the properties of concrete. Today (spring 2007) there are no certian mathematical methods to calculate the required percentage of this admixture needed to give the necessary set slump flow in the overall concrete recipe. Concrete batching companies must therefor experiment with different amount of superplasticizer in order to meet the specified slump and strength. The purpose og this report is to investigate if any mathematical relation can be established between the amount of superplasticizer used and the slump flow achieved. After carrying out some practical experiments using four different superplasticizers a direct relationship can be establish between the percentage of admixture used and the slump/flowability achieved. Unfortunatly at present due to the numerous variables, the calculation of mathematical formula can not be achieved..

Soil organic carbon (SOC) stocks and fluxes in forest ecosystems are influenced by natural and human disturbances. In the tropical regions the highest impacts on disturbance in forest C cycles are related to human activities such as conversion of natural lands to cropland and pasture areas and to forest plantations. The disturbances in the forest C cycles will release CO2 emissions to the atmosphere triggering global warming. In this study the focus was set in subtropical soils in Brazil, south extreme region of Bahia. The aim of the study was to investigate whether reforestation of Eucalyptus plantations under former pasture areas will help mitigate climate change through carbon sequestration.

Conqueror for Indigo is production treated with an active chemical to maximize the ink adhesion.ArjoWiggins has found that another chemical, the candidate compound, would improve the propertiesof the paper. ArjoWiggins therefore wish to replace the current compound. To strengthenthe patent requirements for ink adhesion needs to be determined. A theory is developed to whychemicals with certain properties maximize the ink adhesion. Experiments are performed but theresults are inaccurate.

The goal of this project was to make the requirement process at the Swedish Coastguard more effective. The first step to achieve this was done by locating bottle necks in the process with value stream mapping method. The result of this study showed that the biggest restriction in the requirement process was while examining older requirement documents to understand what elements were suitable for the particular project. This was followed by a study of literature, interviews and theory of Lean Production with the ambition to investigate how the requirement process was handled on other companies and how to improve the process on the Swedish coast guard. This led to a number of potential enhancements of the process which later was evaluated. Requirements written by different people in different organizations were analyzed in order to sort out if there were some similarities? which could be used as standard elements in a future standardization of the process.

This thesis is basically a design project aimed to find a safe and reliable automatic safety device, which is designed to be suitable for highly automated industrial situations. This device fits with ABB / Jokab Safety?s fence systems. These are built up around machines to create safety distances. The automatic protection device assist the operator in situations when loading or going in and out of the danger zone.

I denna rapport redogör projektgruppen för resultatet i kursen examensarbete 15hp (C-nivå) utfört på maskiningenjörsprogrammet, inriktning produktutveckling och design, vid Jönköpings Tekniska Högskola.Examensarbetet har utförts i samarbete med Kongsberg Power Product Systems AB i Ljungsarp. Syftet var att utveckla en ny typ av övre teleskopfunktion till Kongsbergs modulsystem för ställbara rattstänger.Utgångspunkten i projektet var att skapa en mer ergonomisk förarmiljö, något som Kongsbergs kunder och marknaden för långsamtgående fordon allt mer efterfrågar. Kraven som ställts på projektet bestod i största del av axiella och radiella krafter som konstruktionen skulle klara av, samt den axiella förlängningen av rattstången.För att strukturera arbetet har en produktutvecklingsmetod från boken The Mechanical Design Process av David G. Ullman använts. Dessa metoder har använts i genomförandefasen för att leda fram till resultatet.Projektet har resulterat i ett koncept som löser Kongsbergs krav på förbättrad förarergonomi..

There are some key elements which distinguish a general operating system, such as Linux, from a Real Time operating system, such as OSE. The later belongs to the category of soft Real Time systems while Linux is a general operating system, with significantly improved real time properties after version 2.6. These improvements make it interesting to compare the two systems.When comparing two operating systems, there are a number of issues which have to be considered. One way to measure the performance of the systems is by studying the time consumption for the same functionality and hardware.During the study, the items that appeared as the most important for the performance of the systems, were: process primitives, system primitives, interprocess communication, context switches and interrupt latency.This work demonstrates that it is possible and reasonable to do performance testing on two different operating systems. The implemented tests cover a number of basic functionalities, which appeared to be the most crucial ones for the performance of the systems..

Climate changes today are mainly caused by anthropogenic activities and the increased emissions of greenhouse gases to the atmosphere and this has raised questions on how to reduce the usage of fossil fuels. Ethanol is a good alternative to conventional gas and has been used in Brazil since the 1970 ?s. In Sweden several newspapers has written about the poor working conditions on many farms thus making the Swedish company SEKAB design a certification for their ethanol to ensure that it can be considered to be a sustainable alternative.Furthermore WWF has developed a certification tool called Bonsucro in cooperation with Coca Cola, Ferrero group, BP and Shell. This is due to the fact that no global certification tool has been available up until now.

This thesis is basically a design project aimed to find a safe and reliable automatic safety device, which is designed to be suitable for highly automated industrial situations. This device fits with ABB / Jokab Safety?s fence systems. These are built up around machines to create safety distances. The automatic protection device assist the operator in situations when loading or going in and out of the danger zone.

In this report a study is carried out with the aim to identify added values of EPC projects implemented in schools in order to increase the interest of EPC projects on the market. The report examines how the planned maintenance, supervision, maintenance and corrective maintenance is affected, how insurance premiums and terms are affected, the indoor environment and how the tasks of the operating staff is changing. A literature study of energy savings, energy use in schools, maintenance and insurance as well as how energy efficiency improvements are related to the Swedish environmental objectives has been made. Visits were carried out in Ludvika, interviews were also carried out with operation technicians and local strategists in Ludvika as well as employees of insurance companies.Schools often have neglected maintenance and problems with ventilation and indoor environment. Schools also have a large energy saving potential due to their low utilization, mainly because they are empty parts of the year.

Concrete is one of the world?s most common construction materials and is composed of 70-80 % stone material. Today crushed stone is used as aggregate in concrete in order to replace natural aggregates due to strong environmental reasons. Stone crushing yields flaky material and in this thesis studies are made on the flaky particle shape and how it influence properties of concrete such as workability, rheology and strength. The concrete recipes used in this thesis have fixed values, the only variable is the flakiness of the crushed stone.

Arcoma is a company that develops and manufactures X-ray equipment for hospitals. One of the most crucial components is the digital detector. Due to the high cost it is made removable so it could be transferred and used in other X-ray apparatus. The detector is placed in a so called detector holder. The current detector has a rectangular shape which sometimes requires a 90 degree rotation to match the shape of the patient.

This study is primarily an account of my examination work in archival science which took place in the archive of Margareta Böttiger, the state epidemiologist at the Swedish Institute for Communicable Disease Control Stockholm. The records are from Böttigers period of work, mainly divided into three parts, polio, HIVS/AIDS and vaccination. Of these I have focused on polio with was the area she got renowned for. Moreover, owing to the uniqueness of the material this study has focused on the properties of the archive as a working-life archive which I propose as a special type of personal archive with unique attributes. To summarize, a working-life archive has in comparison with other personal archives a more fluid process of archiving where the profession is important, not the personal production of records.

Syftet med detta examensarbete har varit att införskaffa lämplig utrustning till förbearbetning och oförstörande provning. Utrustningen ska användas till rör som svetsas på insidan. Arbetsgivare är Areva Uddcomb i Karlskrona. Vi har använts oss av metoder från Fredy Olson. Detta för att få en enkel och sammansatt struktur i arbetet. Problemställningen har såvida varit att bearbeta rören på insidan för att kunna applicera en svets och att kunna lokalisera om en defekt uppkommit i svetsen.