The purpose of this study is to examine which factors played an important role in the food price crisis of 2007-2008. Theories used are Microeconomic theory, explaining changes in supply and demand, and Macroeconomic theory, explaining the impact of changes in exchange rate on prices. A theory regarding speculation is also used to explain the impact of speculative activities effects on price. The method used is multiple regression analysis in order to determine the effects which ethanol production, oil price and dollar exchange rate had on the surge in the price of corn, rice and wheat.The data used is in monthly observations during the period 2005-2008. However, other factors are taken into consideration during the study, such as production quantity, stock size, economic growth, speculative activity and population growth.

The global climate-change means increasing mean-temperature and higher precipitation in Sweden, which leads to shorter periods of frozen ground in the forest. At the same time the harvesting machines are getting bigger and more powerful. The forest industry aim at an even wood flow, and the ground damage has to be as low as possible. The two biggest causes for ground-damage is the bearing capacity of the forest ground and the ground-pressure of the harvesting machines. The aim of this study was to find out some rules for the machine choice considering ground pressure, when harvesting on ground with low bearing capacity.A field study, using a Valmet 890.3 forwarder, was carried out where different ground pressures and their effect on the ground were tested on two different types of ground.Additionally, an inventory of damaged harvesting grounds was made.

Background: Previous research demonstrates that negative stress in the current situation is common among nurses working in emergency care. The stress is demonstrated to be associated with poorer provided care for patients and impaired health of nurses. Aim: The purpose of the study was to highlight nurses' perception of stress and their work for a good nursing care on an emergency care department. Method: An empirical design with qualitative approach has been used. Five semi-structured interviews were conducted with nurses and forms the basis of the results of the study.

Purpose: We will understand and explain Dell?s value gap through an extended intellectual capital theory. This will be done by deriving the value to the different parts of the intellectual capital value scheme. We will also use value scheme to describe the ongoing strategy shift. Methodology: The qualitative method and an abductive reasoning have been employed during the progress.

The following report comprises my bachelor´s thesis in Industrial design, 30 hp. It is executed in collaboration with Bonum senior housing, who has been the client and assignment- maker of this project.The goal was to design a bench for their entrances, which could represent not only the needs of the target group but also Bonum as a trademark. The work is done with great care for both human kind and the environment, with sustainability as beacon.The design process has been followed.Initially, you will find the definition of a bench for entrances, the framework including inclusive as well as sustainable design, a function- and market analysis followed by the inspiration part of the project. Getting to know the target group and their specific needs has been essential for this work.Investigations about what senior house living and senior products are and what the target group thinks and feels, has been done. As a result, two ?personas? has been developed.With the help of a purposely chosen group of people, surveys and ergonomic studies has been executed, as well as prototype-testing.The fact-finding has formed the stable and unavoidable foundation of this project, which later on gets more creative and idea based.

Projektets utgångspunkt är ett nytt konstmuseum i Uppsala, i området bakom Uppsala centralstation, som nyligen genomgått ett ansiktslyft.Museets långsmala karaktär har hämtats från det intilliggande godsmagasinet och från tomtens form. Genom byggnaden har ett diagonalt stråk öppnats, för att ge möjlighet åt fotgängare att passera genom byggnaden och för att skapa liv och rörelse på platsen.Genom fönstren i passagen kan förbipasserande få en skymt av vad som händer inuti muséet. I passagen ligger museets entré, den pedagogiska verksamheten och ett kafé för allmänheten.Museets fasad är inspirerad av den arabiska mashrabiyan. Byggnaden har fönster längs hela fasaden, som i sin tur är täckta av skärmar tillverkade av sträckmetall. Ljuset tillåts komma in i byggnaden samtidigt som sträckmetallen täcker fasaden och bevarar något av museets hemligheter för förbipasserande.Museets inre väggar består av massiva betongskivor, placerade i ett rutnät som fått sin riktning av passagen genom huset.

Due to stress, the workplace is a setting where actions of health promotion are of great importance in the perspective of public health. Stress is caused by heavy workload, low control of organizing their tasks and lack of support from colleagues and supervisors. This can lead to cardiovascular disease, depression and insomnia. Due to the health problems that this causes, it is important to examine how senior immigration offices perceive their psychosocial work environment.The aim of this thesis is to examine how the senior immigration offices at the Migration Board perceive their psychosocial work environment. The study is based on a qualitative approach with deductive content analysis and the data has therefore been collected through interviewing six people based on a semi-structured interview guide.The result has shown that the senior immigration offices are pleased with their work environment and that their workload is constantly changing.

Biogas is a renewable fuel that can be extracted from anaerobic digestion of many differentsubstrates, for example biological household waste. An alternative handling of the waste is tomix it with other wastes and incinerate it in a combined heat and power (CHP) plant. Thisstudy uses life cycle assessment to investigate which type of waste handling that is betterfrom an environmental point of view, anaerobic digestion with biogas production orincineration. The results are based on a case study of a biogas production plant owned by thecompany Ragn-Sells in Vänersborg. The alternative is incineration at a CHP plant inGothenburg.

This thesis work is the last part of the Master of Science education inmechanical engineering at KTH, Stockholm.The aim of this project was the development of a Multi-zone modelfor NOxformation in Diesel engines. Because of the stringent emissionlegislations, great effort is made to decrease the fuel consumption and theharmful emissions of internal combustion engines. Computer simulationsplay a decisive role in this context because they substitute the expensiveand time-consuming laboratory tests.The model is based on a multi-zone approach and uses the wellknownExtended Zeldovich Mechanism which gives a relation to calculatethe NO formation rate using the concentration of different gas speciesinvolved in the process.All the most important phenomena involved in the Diesel combustionhave been modelled. A special attention is then paid to the equilibriumconcentration calculation; this is a significant part of the model whichstrongly influences the following steps.A Simulink model has also been developed. This second version isbased on the previous model and it is made especially to allow theconnection with other external softwares, GT-power in this case.

Abstract The subject of this thesis is the priority rules that apply in connection with mining activity. Already back in the 1800s, there were rules in the so-called Lego Charter concerning protection of workers, mainly servants. When the first modern trade union was founded in the 1870s, also developed a collective agreement. These agreements were the order of priority clauses had to intend to ensure employees' working lives. Exceptions had to be done by ensuring that individual employees' dependents. In 1974 the Act on employment entry and had intended to protect older workers.

The Swedish industrial society has left several areas with contaminated soil and water which today is of danger for the environment and human health. One of these areas with contaminated soil and water is the region where the former Glava glassworks operated during 1859 to 1939. The main object in this study has been to study the responsibility for the contaminations according to the Environmental Code. The method used is a qualitative content analysis of relevant literature to answer the following questions:What types of contaminations can be found in the area of Glava glasswork and what health issues can these cause?What kind of activity has been conducted in the area that have caused the contaminations in soil and water?According to law, what are the responsibilities for the contaminations in soil and water at Glava glassworks?The contamination in the region has been confirmed to originate from the glasswork due to the environmental engineering survey made in the area in 2009.

Hålningsprocessen är det inledande bearbetningssteget vid varmvalsning av sömlösa rör. Det är en tvärvalsningsprocess i vilken ett cylindriskt ämne valsas mellan två dubbelkoniska val¬sar över en plugg. Valsarna är snedställda med en viss mat¬ningsvinkel, vilken ger upphov till en axiell drivkraft genom ver¬ket. Hela denna pro¬cess är roterande. Detta i kombination med bl.a.

The company Olofsfors AB manufactures drive belts for forest machinery, known as ECO-Tracks, and abrasion-resistant steel and cutting edges for graders, excavators and tractors, known as Bruxite and SharqEdges. Manufacturing these products requires the steel to be heated and molded, then submerged in water and hardened. The water used in the hardening of steel is pumped to the process from pits below the floor and then pumped back to the pit after it?s been used. Since the temperature of this water rises after being used to harden the steel the temperature of the pumping pit needs to be adjusted to maintain its setpoint of 21°C.

Bipolar disorder is a severe, affective illness which causes a person to alternate between episodes of pathologically elevated mood (mania) and depression ? in between these episodes the mood is normal. The length and intervals between the episodes are highly variable among the ill, as are the severity which is divided into two major subgroups: bipolar I and II. Bipolar I disorder is the most severe because of the patient?s inability to realize that he or she is currently in a manic phase, in the case of bipolar II disorder, the patient is aware that he or she has an abnormally raised mood, a state which is called hypomanic state instead of manic.

By doing this thesis I want to open up farmers and tractor drivers mind to see that there is several risks with their work. There is a number of risks that everybody probably already know about, and hopefully I will, with this work, help them to see a lot more risks, to make them be more careful in the future. I?ve interviewed seventeen farmers in middle and south of Sweden. I?ve also asked them for their opinion and what kind of changes they looking forward to.