The City of Gothenburg has an urgent need to upgrade its public transport. The capacity of its light rail transit (LRT) has reached maximum capacity within the inner city limits years ago. The construction of an underground metro will be very expensive and time consuming due to the soft clay beneath the city. The apparent need of developing another type of mass rapid transit (MRT) is urgent. An elevated metro have turned out to be a success in Greater Vancouver, but is it possible for the system to operate well in Gothenburg with its narrow streets and current land use; will its route coexist with the current LRT or will the noise disturb people too much?.

Concrete floors have traditionally had no problems with annoying vibrations. However with the demand for larger spans the floors need to be made more slender with a higher degree of utilization and lower mass. Therefore new floors may have problems with vibration serviceability. This thesis studies the vibration characteristics of hollow core slabs. The analysis was made in the finite element program Ansys. The hollow core slab was subjected to a varying force simulating one person walking across the slab.

The main purpose of this study is to examine if variations in voter turnout for the European Parliament elections in each member state is affected by the rate of national party polarization on the EU-dimension of party politics. The theoretical background assumes that a high level of polarization generates higher voter turnout since more alternatives are presented to the electorate. This makes it easier for the electorate to find a party that represents their preferences. This will, in turn, increase the likelihood that they will participate in the election.This study uses a research design based on a quantitative analysis with data from each member state, except those with compulsory voting, in the European Parliament elections of 2004 and 2009. The results of the analysis indicate a relationship between high levels of party polarization and lower turnout in the European Parliament election.

Powder Metal (PM) gears are machine element components which operate under the same principle as conventional gears, but, due to their intrinsic material characteristic need to be designed slightly different, and its manufacturing process offers advantages previously unobtainable by conventional steel gear manufacturing methods. The use of PM in similar applications, such as synchronous hubs, makes them a suitable candidate for production in such material. The current master thesis work focuses on gear design using PM by utilizing finite element method (FEM) to reduce weight and inertia taking into account root bending strength and tooth deflection.First a topological optimization is used to determine feasible candidates for different web designs which have as objective to reduce volume, similar topologies were shown during different loading conditions; and hence, this topology was chosen as a suitable candidate. A shape optimization of the topological candidate was performed having as state variables root bending strength, independent for compressive and tensile side of the tooth loading; and tooth deflection, which in concept can be correlated to static transmission error (TE).Another aspect in this thesis analysed is the possibility to incorporate non-trochoid root geometry, a trochoid root is always present when machining with a hob, into the gear root and hence reduce the stress concentration here. Due to the use of PM, a non-symmetric optimized root can be achieved and hence be optimizing compression and tension.Results showed significantly lower inertia, for example certain results showed 40% reduced when compared to solid gear, with adverse effects as increase in tooth deformation and increase in maximum principal stress.

Equine cutaneous melanomas arise much more often in horses with a grey coat color than in horses of other colors. Some scientists have in different studies come to the conclusion that the melanomas are neoplasms which can be classified by examining their histological and macroscopic features. The more defined and demarcated a tumor is, the more benign it tends to be. Other scientists believe that the skin lesions are the result of a pigmentation disorder that is linked to the greying of the coat color. According to this theory, the lesions are not malignant although they have the ability to metastasize.

The changes in the Swedish meat- and meat processing industry have been substantial in recent years. These changes will alter the business environment for many companies. In order to be prepared to face new threats and new opportunities, companies should be actively working on these issues. Risk awareness and by developing of risk management strategies companies can act quickly and effectively when the conditions changes. The objective of this study is to analyse whether and why companies in the Swedish meat- and meat processing industry use various forms of risk management strategies.

Detecting small signals with a comparator demands that the total voltage offset is lower than the actual signal. The total offset includes the voltage offset in the comparator and the voltage offset that is created by the offset currents that flows thru the load at the comparators input. The goal with this comparator that has been developed has been that it will have a total voltage offset at maximum 500 uV. The comparator does not need to be extremely fast or does not need to operate in a big frequency area. To have all the flexibility that is needed a full custom technique is used.

This thesis compares political participation by the public through the Swedish Parliamentary Ombudsman (PO) and the German Petitions Committee of the Bundestag (PC). Through studies of literature and statistics I examine how citizens can participate through the institutions, how frequently they do and the likelihood of sparking a debate while participating.Using media theories as well as theories of participatory and representative democracy I study how citizens can use these institutions for purposes of control and proposition.Both institutions deal with complaints but the PC also deals with propositions for legislation, making the institution more versatile. The PO deals with more cases than the PC and has more far-reaching competences and areas of inspection, although neither institution has binding decisions. Thus the direct advantage for citizens using the institutions is the chance of reaching out to media and the public through freedom of information laws and the German online petition forum.The PC to a larger extent fits the representative model while the PO in some respects is more a legal than a political institution, being managed by lawyers instead of MPs. Neither institution meets the ideals of participatory politics although the German official petition is closer to it..

Objective: To study the evidence on physical activity (PA) as an effective preventive strategy for depression.Methods: A search of electronic databases was performed for articles between 2007 and 2012, both original research and review articles, concerning the link between PA and depression on children, youth and adults. Three reviews, five longitudinal and two cross sectional studies were included.Results:  PA reduced the likelihood of depression in many studies and a sedentary or inactive lifestyle increased the risks for mental health symptoms such as depression. One study showed that low PA in childhood increased the odds of depression as an adult and other studies on teenagers saw a connection and mediation between PA and self-esteem whereas physical fitness showed no mediating effect. Many of the studies and reviews point out the insecurity regarding the dose-response association and the difficulties in defining causality.Conclusion: PA might have a preventive effect on depression. Some evidence exist to support that PA in childhood prevents depression in adults.

The proportion of elderly people in Sweden is increasing. Many of these live at home and as their age increases so does the likelihood of health problems and the need for support, medical attention and care. Personnel working with home help provide a large part of this care, including areas of home-based care that are the responsibility of the district nurse. The purpose of this paper is to describe how home-help personnel perceive their work in the area of home-based care, as their views are an important factor in the ability to provide a care system that funktions successfully. The method employed here is phenomenografic and nine subjects from a home-help group have been interviewed.

This paper examines the consequences of membership and participation in immigrant associations on individual immigrants? political integration and indirect political participation with reference to Swedish society. The theoretical underpinnings consist of a social structural outlook on social capital, combined with the Civic Voluntarism Model, both of which focus on the potential role of social networks for moving people into political action. After a presentation of parallel qualitative data over the experiences of individual members in a Finnish and Bosnian-Hercegovinian organisation, it is suggested that immigrant associations support the political integration of their members into the host society. Firstly, the case studies indicate that members of immigrant associations gain the opportunity to augment their civic skills, which is a significant prerequisite for political participation.

PÅVERKAN GENOM REFLEKTIONKan besvarandet av ett frågeformulär förändra trafikbeteendet hos unga män?Moa LannerSyftet med denna explorativa studie är att belysa om besvarandet av ett frågeformulär kan initiera en reflektionsprocess som i sin tur leder till ett förändrat körbeteende. Uppsatsen utgår från det frågeformulär som användes i Falk & Montgomerys (manuskript under färdigställande) studie. I uppsatsen behandlas två delfrågor, 1. Kan formuläret ha initierat en reflektionsprocess bland respondenterna? 2.

This thesis discusses the possibilities to distribute digital video in a military vehicle. Today, an analogue system is used, which has a maximum capacity of eighteen video sources and the same number of monitors. The purpose of this thesis is to increase the systems capabilities regarding secure distribution and additional functions. Both software and hardware tests are made to investigate the features of the digital video standard MPEG-2. Both the coding delay and the image quality are of great interest.

Music production software has a strong tradition of two-dimensional graphical user interface (GUI), in which the time line is represented as a flat composition either horizontally (from left to right) or vertically (from top to bottom). In my degree work titled Sequi, I approach music composition from a different angle. Instead of a two-dimensional time line with only two possibly ways of progression (forward or backward) I constructed a three-dimensional GUI with the maximum of four different ways of progression from any given point in a composition. The height axis is used to describe time-intervals (the time between downbeats) and the wide and depth axes are used to describe progression from one sound to another..

Central labour market actors have come to an agreement ? Sweden is going to need labour migration. In spite of the agreement the actors disagree upon how the labour migration should be designed. This essay examines how the union organisation, LO presents labour migration in their rapports during the years 2000-2006. This is done through Laclau and Mouffes discourse theory and a merge with postcolonial theory.