In this thesis we calculate the Hawking mass numerically for surfaces in Kerr spacetime. The Hawking mass is a useful tool for proving the Penrose inequality and the result does not contradict the inequality. It also does not contradict the assumption that the Hawking mass should be monotonic for surfaces in Kerr spacetime. The Hawking mass is quasi-local and defined by the spin coefficents of Newman and Penrose, so first we give a discussion about quasi-local quantities and then a short description of the Newman-Penrose formalism..

The purpose of this study is to investigate how two elementary schools work with Swedish and Swedish as a second language through four teachers thoughts and perceptions. My issues are: How do the teachers perceive the Swedish classes in the school, and how do they perceive that they are conducting it? Which examples of material for teaching do the teachers show me and how do they use it in each school? Do the work with Swedish and Swedish as a second language in the multi-ethnic school and the more mono-ethnic school differ according to how the teachers perceive they are conducting it? Do the teachers think that the equivalent education that is part of the curriculums values and mission always is maintained and why/why not? My study is performed from a sociocultural perspective. My conclusions are that the teachers from the multi-ethnic school are more aware of how to work with Swedish or Swedish as a second language regardless of the students ethnic or national origins. Some aspects of how the teachers work with Swedish are equal with each others, but there are differences to.

The aim of this study is to examine the understanding, preschool teachers, have about their work related to energy conversion in the human body. Through individual interviews, answers have been sought to the following questions: What do the preschool teachers believe they need to know about the link between food and energy? What are the different methods preschool teachers use to workwith the area of energy conversion in the human body?The results show that preschool teachers have knowledge in terms of food and its nutrients as an energy source for the body to cope with. However the more thorough and detailed questions become all the more uncertainty there is about the topic. Preschool teachers on their own initiative do bring up the topic with the children and begin conversations as well as ask questions, perform experiments and demonstrations.

To increase the understanding of how individuals total life situation affects their stress level and health has lately more frequently been discussed in different contexts. Furthermore, it is important to have knowledge of power structures that exist under given circumstances in a society to get an increased understanding of how to structure the health promoting work to get the highest possible benefits. People?s work life is essential to their health, since we spend a lot of time at work. The aim of this study was to find out which factors that relate to nursing staff?s health and stress level from a general perspective.

At the farm Fride, in Lojsta at the Southern part of Gotland, my family runs a pig production with 80 part-integrated sows in a ?Familybox-system?. The main parts of the facilities are from the early 90´s and have done their job. The production results have the last years decreased because of new infections so we have to do something before shifting ownership! This degree thesis is meant to answer the question about which the optimal extension would be today. By studying literature, use my own experience and make lots of calculations, I try to find out different opportunities.

My purpose with this study is to examine whether or how teachers are gender-conscious in preschool everyday situations. That is, if they are aware of their attitude and treatment of work on gender and what gender concept has relevance for educators. In much of the practical literature that I read, it appears that many teachers are not aware of their responses and attitudes to children based on gender aspect. I have examined how the gender work differs in the two preschools that I chosen to study.The questions that this study is based on isDoes the educators at the preschools work gender conscious in everyday situations?-Is it boys or girls who get the most attention from educators in everyday situations?What do the teachers at the preschool concept of gender?What approach have been the teachers of preschool to counteract traditional gender patterns in everyday situations?I have made ??a qualitative study where I interviewed five educators and made ??observations on the two preschools.

This study discusses the relationship between studies and part-time work. The aim is to gain a deeper understanding of why students enrolled in the programme of human resource management and working life choose to undertake part time work, specifically in the human resource business in such great extent while studying full time and what this means for the students regard gaining knowledge. It focuses on the students experience and in order to gain the understanding of this phenomenon three qestion formulations were formed; ?What are the reasons formed by the interviewed human resource-students for having part-time work in the human resource bransch, in addition to their full-time studies??, "What values are made visible regarding the students choices of having a part-time work in addition to their full-time studies?" and ?How does the students express the thought about their part-time work as a key to learn from their studies?? The empirical data were collected through interviews with eight branch-specific human resource-students. The data was analysed based on previous research and a theoretical framework consisting of Lave & Wenger's theory of communities of practice and John Deweys theory of learning by doing.

The purpose of this work is to create more knowledge about the teacher's perceptions of group dynamics and its impact on school activities. How do teachers opportunities and obstacles in order to influence group dynamics among students. The questions I have answered is how the teachers see the importance of a functioning group dynamics in school, how teachers work with group dynamics and how teachers describe the opportunities and obstacles for effective group dynamics. The method I am using at work is a qualitative research method that involves obtaining the teachers' own thoughts, feelings and experiences around the right questions. I have interviewed three teachers in primary schools in the county of Stockholm to find out their particular approach.

Dice is one of Sweden's largest game manufacturers. They have produced a game series called ?Battlefield?, which recently celebrated its tenth anniversary, releasing it gradually over the years. In order to create a game some form of work structure is required. In this essay we discover what the Dice work process looks like today and how it has changed over the years.Game development is progressing and market changes require game developers to constantly adapt to the current situation.

To create a profitable and competitive business an important factor today is a well-functioning logistics. Through effective internal material flows effective logistics can be achieved. Unnecessary handling and movement of materials is a waste which affects the internal material flow. These wastes should be identified and eliminated as much as possible to improve the internal materials handling and through that achieve a more efficient business. At Fagerhults Belysning AB, where professional lighting systems are developed, manufactured and marketed, a new inventory has been built and changes in the assembly has been made during the past year.

The purpose of this paper is to analyze the employers? responsibilities for rehabilitation ofemployees in Sweden, who due to illness or injury are unable to work. The process of therehabilitation will be analyzed in a gender perspective. A minor comparative study aboutrehabilitation in Denmark will also be carried out. The purpose is to see how the process ofthe rehabilitation is designed for those who due to illness or injury are unable to work, whichfactors that affects the rehabilitation and which differences there are between Denmark andSweden regarding the employers responibility for rehabilitation.

This thesis has been written with our society?s current energy-situation in mind.Although it only deals with one particular block of buildings, the solutions and suggestions presented herein are quite applicable on other objects of the same type.This thesis is intended to be used as a guideline for energy-preserving projects in general, with an eye to buildings erected during the Swedish ?million-programme? in the sixties and seventies.The paper starts with the acquiring of all necessary blueprints and technical specifications. It then moves on to a thorough description of the buildings in question, and their heating- and ventilation-systems.Followed by this the reader is guided through the successive stages of energy-perseverance measures that are available, and possible. Reasoning around the economic factors concerning all measures is also held.The paper ends with conclusion, and a discussion concerning the delicate issue of the higher return-temperatures possibly reaching the district-heating plant..

Following is a study of fathers 'experiences of balance between work and home life. The method the researchers used was based on qualitative interviews aimed at describing father?s own experiences and values, which affects them. The researchers chose to specifically study situations where the fathers were faced with situations where their children needed to be cared for in the home because of a cold or similar illness since this is a situation that directly affects the time that was meant for work, but now risk being moved to areas of life that the researchers define as home life. This is to see whether the respondents felt that this situation affected the balance between work- and home life.

This study's main aim is to contribute with an insight regarding how employees of the Swedish International Development Cooperation Agency (Sida) experience religion as a component of development work in religious contexts. The study focuses on whether or not religion is given enough space within Sida's development work and if the policies of Sida are enough to cover the needs in religious contexts. To answer these questions we have interviewed six employees of Sida which holds experiences of development work in religious contexts. The results show a lack of knowledge and encouragement of these questions within Sida and that the interviewees experience religion as a complex concept. The study also shows that the interviewees find policies, methods and tools within Sida as inadequate to cover the needs of religion in development work.

Scania CV is one of the world's largest truck manufacturer. It is not only the directproduction of vehicles and methods that are important for Scania but also the servicemarket handling spare parts, repairs and workshops. The department Vehicle ServiceInformation construct standard times through work measurement for particularworks in the workshops. The software application STAM is used in the servicemarket to create and store standard times which then are exported to theworkshops' own systems.The purpose of this master thesis is to analyse and evaluate the internal workmeasurement system that includes standard times and the software STAM. Also,based on external analysis and benchmarking of other systems suggest appropriatefuture development within the area for Scania Vehicle Service Information.In order to perform the investigation, interviews and studies have been doneinternally at the departments that are involved in work measurement as well asexternally at Scania workshops.