Biogas is an expanding sector within the broad field of agriculture and animal production. Small-scale biogas offers local combined power and heating production and the substrate is transformed into high-quality biological fertilizer. This bachelor thesis focuses on a pig farm in south-western Sweden, where biogas is produced from pig manure, evaluates and suggests ways of optimizing the process and investigates whether investing in an upgrading plant would be a feasible and more cost-efficient option. The results show that the biogas plant is working well, although the production differs from the original plans. This shows in turn that planning and examining the basic conditions before making the investment is of great importance, as well as monitoring and keeping detailed statistics of the running process.

Most of the portable electronic devices use a battery as a primary power source. Nowadays, when the applications are becoming smaller and smaller and more power efficient, the designer needs to concentrate more on reducing power consumption, using secondary power sources and introducing power storage devices. Multiple power source availability and a power storage device on the board will make the applications much more useful and efficient in everyday use. This thesis proposes a power supply unit (PSU) for wireless sensor platforms which is capable of supplying a sensor node with energy from multiple sources, as well as status information from the PSU. Present power storage devices, like electric double-layer capacitors (EDLCs) and batteries, have become more and more common as their characteristics have developed.

Future emission legislation puts great emphasis on increasing the efficiency of the engine, thereby reducing fuel consumption. The tribological contact between cylinder liner and piston ring is where an great amount of energy is lost due to friction, and by reducing these losses an reduction in fuel consumption can be achieved.The aim of this thesis was to evaluate the tested piston ring coatings against a plasma sprayed cylinder liner and rank these combinations of materials for friction and wear resistance. The coatings that were tested was Cr + Al2O3, (Al,Cr)N, two types of CrN and WC / C.The experimental tests were performed with a so-called pin-plate, where used oil with addition of an acidic mixture of sulfuric and nitric acid to mimic the acidic condensate formed when exhausts recirculate, were added with a continuous flow. The results were then analyzed by weighing, studies by optical microscopy and scanning electron microscopy (SEM) and profile measurements.The results from each material combination were that the plasma coated cylinder liner wears too aggressively in order to yield a ranking of the piston ring coatings based on the parameters of friction and wear resistance. It is therefore proposed that an alternative coating on the cylinder liner should be developed, lacking the large abrasive wear on piston rings and that can withstand the corrosive environment resulting in engines equipped with EGR.

Abstract The aim of this paper is to investigate whether Vara municipality has a continuous picture of their identity, profile and image. Globalization has contributed to the increasingly growing of place marketing. Therefore, the study goes on to using the concepts of identity, profile and image to find out if Vara Municipality communicates similar throughout the whole organization and find out their all through core values. Globalisation will be an interpretive framework for the work that describes why the place marketing is becoming more pressing. The sense of place will be a central part of this study as it is the feelings and images of different places that will be described by the municipality together with the identity, profile and image.

Purpose: The purpose of the investigation is to give an insight to hot the EU legal environment in the field of vertical relationships influences the competitiveness of the 2nd tier of the automobile industry. Conclusion:It follows that European legislation has succeedded in raising the competitiveness by breaking down the powers of the predominantly more powerful companies that the 2nd tier players do business with and by giving companies sufficient leeway to act. The comment must be made here that serious problems due to a power misbalance might still exist yet are not uncovered. In the course of my research I have found a lack of issues in my subject field. These problems however would have a more structural and economical cause, dealing with these problems would fall outside the boundaries of the competence of European competition legislation.

The public sector has through the years been exposed to a rather radical alteration. The aim with this alteration has been to make the public sector more effective. It?s a dynamic society that Norrbottens läns landsting (NLL) operates in today and it is therefore of great importance that the managers get a solid foundation to rely on, since they have a central role in the ambition for efficiency. Another reason to educating the managers is that NLL can secure the future pension losses.

Detta uppdragsbaserade arbete är en del av ett stort projekt som Göteborgs Hamn AB driver, vars syfte är att förnya det nuvarande brandskyddet i Energihamnen och även möta framtida krav. Syftet med föreliggande studie var att undersöka vilka förväntningar personal vid rederier och fartygsbefäl som regelbundet anlöper Energihamnen har på Göteborgs Hamn AB:s brandskyddsutrustning och brandberedskapsplaner. Vidare undersöktes vilken brandskyddsutrustning några av de tankfartyg som regelbundet anlöper Energihamnen har ombord, även vilka krav som ligger till grund för den utrustningen. För att få svar på ovanstående syfte kombinerades intervjuer med personal vid tre rederikontor och fem fartygsbefäl från samma rederier med en litteraturstudie. Litteraturstudien består av en sammanställning av de regelverk som ställer specifika krav och rekommendationer för det brandskydd som ska finnas ombord på tankfartyg.

Many enterprises have shortcomings in the transfer of information between different departments. Furthermore, routines for maintaining knowledge in order to be able to use this experience in the future are often lacking. Time and resources spent on improving these systems and procedures can provide significant benefits in terms of saved time and reduced costs in the later stages of a project. The benefit of this is not only a greater clarity and a reduced risk of misunderstandings, but also the preservation of knowledge that would otherwise be lost.The aim of this study has been to examine the process of information transfer and the transfer of knowledge between the calculus department and production manager in projects at Erlandsson Bygg i Öst AB. An additional aim was suggestions for improvements in the calculation handover and at the end of a project, where it was possible.The study was primarily conducted through literature studies and interviews.

Purpose: The purpose of this paper is to contribute with knowledge regarding the connection between the socialization process and the organizational commitment perceived by junior accountants. Based on Van Maanen and Schein's (1979) model, we intend to identify and describe how selected socialization strategies affect junior accountants? perceived affective, continuous and normative commitment during the initial five years in the firm.Research methodology: Semi-structured interview was chosen as the key approach for gathering essential data. Interviews were conducted at three major accounting firms with a total of eight interview participants. The study has a qualitative approach because of the ability to go in depth on the studied phenomenon.Conclusion: The socialization process consists of individual, informal, sequential, fixed, serial, and investiture strategies.

This is a comparative study of six public libraries in the city of Gothenburg and its neighbourhood. The main purpose of this master thesis is to describe these libraries relating to a reform in the city council of Gothenburg and its neighbourhood. The comparison deals with a period of ten years, 1990-2000. In order to respond to this I formulated two questions: Are there any differences in the activities of these libraries? Has this reform influenced the librarians in their way of working and if so, why? I have studied relevant literature such as annual reports, investigations and analyses in order to be able to formulate the questions.

Since the late 1900s, the consultancy has taken a firm grip on the labor market. The consultants' work profile has been secured through agreements such as guaranteed wages. The collective has been shattered as well as higher demands are required of the employee. This results in higher work demands, workload, a reduced staffing resource and hopeless wages which can lead to health problems and depressions. Previous research shows that consultants find it stressful to be associated with two companies and some clients can also point out consultant through different attributes.

The present essay concerns the Levinasian understanding of responsibility in relation to the two spheres that Levinas introduces in his second major work Otherwise than Being or Beyond Essence, namely the Saying and the Said. The essay investigates some of the different meanings that the concept responsibility takes on in regard to these two spheres, and thus also in regard to the separation between the ethical and the political that is apparent in the book. Is it possible to find a politically uttered responsibility in Levinas Otherwise than Being or Beyond Essence?The essay wants to emphasize the continuous transition between the ethical or the Saying and the political or the Said, and vice versa, with the purpose of showing how the two spheres may be conceived simultaneously. By posing the relationship between the two as a reciprocal rather than a oppositional one, the essay aims to suggest that an understanding of responsibility at once must be ethical and political.

This bachelor thesis in business economics raises the topic about Corporate Responsibility (CR), this topic is currently being discussed in a variety of channels and today an increasing number of companies are involved in corporate responsibility. How do Skanska work with sustainability and why are they doing this? It is also important to see the results of the work with sustainability will lead to. We will go into more depth in one of Skanska's projects, project M25, to investigate the CR strategies they use and see how they actually work with sustainability. The purpose of this paper is to describe and analyze how and why Skanska is working to implement CR policies in their operations and more specifically from the M25 project in order to achieve sustainable business development.

The subject of motivation and feedback is something that the literature regarding management treats as significant. Therefore we have investigated how managers work with feedback in motivational and development purposes within union companies in Gothenburg. According to the existing theory it is important that feedback is given correctly and with relevant content, and thus affect both the recipient's own development and the growth of the business. Earlier authors also discuss the complexity of feedback that it is important to consider all of the surrounding aspects, and that it is important to be aware that there is no single approach that can be directly applied on all types of organizations.To investigate how the managers within the union companies motivate their employers without access to monetary incentive, we conducted a qualitative study with in-depth interviews with four respondents. The respondents were decision makers at their respective union company with the roles as CEO or deputy CEO.

This thesis is about the idea of public transport and the discussions stirred in the media during changes in ownership. More specifically it is a study of the historical situation of Stockholm, Sweden, where the periods chosen are the 1910s, 1960s and 1990s.During the 1910s Stockholm?s first and largest tram company was taken over by thecity, and a period of public ownership began, which in the 1960s changed form whenthe county council took over the city?s principal authority and formed the politicallyadministered company SL (Storstockholms Lokaltrafik, Greater Stockholm LocalTransit Company). Between these periods the word kollektivtrafik (public transport)was established in the Swedish language. This study describes and compares the ideasconcerning the phenomenon of public transport.The aim of the study is to analyse the ideas, values and ideals concerning public transport in the media, defined as newspapers.