When traffic in large cities increases, it becomes more vulnerable to disturbances such as accidents, stalled vehicles or construction; therefore, traffic jams are more likely to occur. For better control of the traffic at a disturbance the Swedish National Road Administration (SNRA) has traffic equipment which can be controlled from a command centre. This traffic equipment consists of gates and signs with variable messages. This report will discuss the system used for traffic control in Stockholm. It will present proposals designed to improve it.

This thesis concerns how the power quality in the grid is affected by the connection of wind power plants. As things are at present, Fortum Distribution AB has a number of wind turbines and wind parks connected to the own grid. As the pressure on building and connecting additional wind power is increasing, so is also the interest of how the already existing wind power generation affects the power quality in the nearby distribution grids. The study is performed by direction of Fortum Distribution AB and is limited to the 10 kV/40 kV-grid in Bohuslän, Sweden. The methods for calculation of power quality are compared to the results of a number of measurements.

The purpose of the study is to investigate the possible effects of an unstable ventilation system and its influence on energy use and thermal comfort. The report also explores how qualified personal working with HVAC view and handles system control.In order to meet the requirements in energy efficiency and a comfortable indoor climate control regulation is a prerequisite. With optimized increased complexity of the climate systems, it becomes more challenging to control the system and the risk of unstable control increases. No previous studies about what affect an unstable system can have on energy use and thermal comfort have been found.The report is based on several tests were the controlling variable has been increased until the system becomes unstable. Two different types of unstable systems have been investigated.

Ett högt ohälsotal i arbetslivet innebär stora kostnader för samhället, arbetsgivare och även för de anställda. Forskningen inom detta område har flyttat fokus från att studera ohälsa till att istället studera hälsa och vilka faktorer som befrämjar hälsa i arbetslivet, de så kallade friskfaktorerna. Föreliggande studies övergripande syfte var att studera om upplevelsen av organisationsrättvisa och personlighets¬faktorn work locus of control predicerar upplevd hälsa hos kollektivanställda män och kvinnor. Studien genomfördes utifrån ett kvantitativt perspektiv med 103 deltagare som besvarade en enkät. Svarsfrekvensen var 22,5 % och resultatet visade att work locus of control predicerar upplevd hälsa för männen och procedural rättvisa predicerar upplevd hälsa för kvinnorna.

In this thesis, a computer program that in a simple way can calculate the performance of control loops at the refinery Preemraff Lysekil has been created. The computer program has been adapted to the environment at Preemraff Lysekil. Theories for evaluation has been studied in aspect of reliability and of automatic implementation. The evaluation has been carried out from data collected directly from control loops at the refinery and from simulated control loops with implemented errors. Among the studied methods are Harris index and Stattin´s oscillation index.

People with certain types of disabilities have the legal right to ask for an individual plan. The idea is that the plan should be a tool for the disabled to get more power and influence over the planned actions that involves their lives. The aim of this thesis was to study the individual circumstances of interpersonal power and influence in the work of individual plans. The study was done with a qualitative approach, where three executing officers and three individuals were interviewed. The results show that the conditions for the individual?s influence are far more complicated than at first glance.

Powdery mildew is a serious problem in both field and greenhouse cucumber production and can cause serious infection and radically reduced yields. Today, powdery mildew is the main disease in greenhouse produced cucumber. Disease control should preferably be both efficient and environmentally friendly, which is not easy to achieve at all times. Alternatives to chemical control of powdery mildews are biological control, physical control, non-fungicide control and cultivation of resistant or tolerant varieties. Biological control can be described as the suppression of damaging activities inflicted of a harmful organism by one or more other organisms, which are called antagonists or natural enemies. In Sweden, there are currently no registered biological control products available to control cucumber powdery mildew. The aim of this study was to investigate the effect of two biological control products in order to evaluate their ability to prevent or reduce powdery mildew infection to an acceptable level in greenhouse produced cucumber. In the experiments, different application regimes were also studied.

Mergers and acquisitions are common phenomenon in today´s society in order to increase shareholder value. Two years ago a fusion of Sweden´s two largest companies in the industry of real estate took place and even though three out of four mergers and acquisitions financially fail this certain case turned out highly successful. The aim of this thesis is to examine how the organizational structure and the management control have been designed and characterized the organizational performance and furthermore what are the success factors of the integration. By studying an acquisition and its potential effects on organizational structure and management control parallel to a model that describes the best practice guidelines for managers to successfully deliver value from their acquisitions, it can be shown that an acquisition has direct effects both on the acquirer and the acquired company and thus the new organizational structure. The main results, thus, is that through active leadership, increased specialization, and more decentralized and thus efficient management control a new organization has emerged consisting of the best features of two separate worlds..

The aim of this research is to find out what environmental impact a wave power park has on the Swedish west coast by creating a consultation paper (?Samrådsunderlag?) for the Lysekilproject at Uppsala University. To highlight the complexity of the problem a system analytic approach was used and illustrated by a Causal Loop Diagram.The overall assessment of the Lysekilprojects wave power park at the Swedish west coast is that it will have a low impact on the environment. This is due to the relative small size of the wave power park and some technical solutions made with the environmental aspect in mind. Artificial reefs and a sanctuary for marine species are effects created by the wave power park and in the longer term the impact will give access to an untapped source of renewable energy, wave energy.

Municipalities must establish budget annually but they are free to decide how the governance should be designed, this can lead to lack of consistency and measurability within and between municipalities. The purpose of this thesis was to present a proposal for a unified and more measurable financial structure of a municipality where this was lacking. In our theory we describe the issues of traditional management control and we introduce an alternative control with non-financial ratios included, called the Balanced Scorecard. In the empirical data it is investigated how the governance of a municipality could be designed, according to the respondents. In the analysis the information gathered to reach the answers to what are considered to be useful governance in municipality, are examined. In the conclusion, we design Balanced Scorecards with both financial and non-financial ratios to the councils of the municipality..

The aim of the thesis is to highlight external factors to explain why the EMU was created. The external factor considered here is the monetary policy of the United States, which often conflicted with European interests. The statistical data in the thesis, as well as previous research, show that even though the EU economically in many ways had become an equal partner of the US during the second half of the 20th century, the union still faced US influence and dependence.The results of the thesis can be explained with neorealist theories on power measured as an actor's distribution of capabilities and balancing of power. An actor that is equipped with the world's leading currency is more independent from others. Other actors, on the other hand, become increasingly dependent on the major currency and the policy of its owner.

Political realism is a general theory within political science focusing on the principle interest defined as power. The theory?s mutual standpoint is that states are inspired by power politics meaning that military and economic power or security stands in the centre while moral and ethics are placed in the periphery. This essay?s purpose is to analyze realism which helps to understand the development and change of the perspective.

In January 2007 the Öresund committy changed its statutes to become a more politically oriented lobby organization. This change can be interpreted as one part of a continuously evolving process where the Öresund region is emancipating itself from the national states in a multi-level European environment. By focusing on this latest development the thesis puts forward the importance of political institutions, as well as politicians and civil servants as actors in them, as crucial factors in the process where the region is gaining political power. The thesis shows how the political cross-border cooperation in the Öresund region is being institutionalized which affects its power relations to other levels in the multi-level system, predominantly the national states. In other words, there is a connection between power and institutionalization.The Öresund committee has by gaining better access to policymaking agendas on the national levels proven that the organizational change has already started to bear fruit.

The aim of this study is to increase the understanding of the causes of the first war between Russia and Chechnya. Empirical data consists of four half-structured interviews with former Russian and Chechen war participants that tell about their perspective of the causes of the war between Russia and Chechnya. The study used narrative method and the theoretical framework consists of International Relations theories such as Realism, Geopolitics, Liberalism and Marxism. Geopolitics sees the geostrategic interest, territory as a cause of war. According to realism warfare occurs because of the state?s endeavor after power and influence in term of territory.

The purpose of this study is to examine how adolescents can participate and have influence in the society, by making obstacles and opportunities that are considered central for their possibilities to power visible. National and international research indicates that adolescents opportunities to participation and influence are limited by the structures of society. A qualitative method was chosen, in which group interviews were made with 14 youths in development areas in Örebro. Theories are presented which constitute tools for analysis of the obtained results and has been chosen based on power- and participation perspective. An analytical model has been used to illuminate what kind of participation adolescents have in different parts of the society, where the concepts from the theoretical perspectives, power and participation are inserted.