This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.

The competitive nature of the automotive industry has always implied a necessity to improve product development concerning time-to-market, cost and product quality. As capacity of computer-aided engineering (CAE) tools has evolved, so has the strive for simulation-driven design. Virtual durability testing using full vehicle models is one of many challenges posed in front of vehicle manufacturers when computer simulations are given a key role in product development.This thesis has been initiated as a preliminary step towards implementing dynamic virtual durability testing in the development of buses and coaches at Scania. The objective has been to assess the predictability of a full vehicle coach model and to what level of precision structural loads can be predicted. Previously performed proving ground testing of a Scania Touring coach has been the basis for the modelling and simulations in this thesis.A virtual model of the Scania Touring coach has been created in multi-body simulation software package MSC.Adams.

To achieve a working collaboration in a big, complex organization where there are vast requirements on both quality and profitability is not always an easy task. An example of this is the organization that was created in the Swedish railway industry following a series of deregulations during the past 25 years. A partial market in this organization is the railway maintenance. In order to achieve a working collaboration between actors in this organization the so-called Purchaser-provider model (PPM) is presently used for the procurement of rail maintenance projects. Previous research has shown that this market-based instrument has clear positive effects regarding the cost-efficiency but hinders the collaboration.

To be competitive in the corporate climate of today it is important to have effective logistic activities. A common resource within the internal logistics is forklift trucks, which are used to lift and transport material. It becomes more and more important to decide whether to buy, lease or rent the forklifts to obtain an optimal economic situation. Many companies have issues with internal pricing. It is difficult to price products and services correctly. It is common to price the overall instead of what it really costs.The purpose of the thesis is to present a model for the acquisition of forklifts for internal logistic operations, regarding financing and internal pricing, to obtain economic effectiveness and an optimal forklift fleet size. The study focused on a specific research question, and for this purpose interviews with experts were held, observations were made and a literature study was done.

Abstract The purpose of writing this thesis was to improve methods during requirements engineering phase. Usercentred system engineering has some problem areas, which are examined and verified to create a new guideline for developers. This guideline tends to make requirements engineering more effective and help developers create more concrete requirements. It is not uncommon that system development projects ends up with unsatisfied users or delay in deliveries. The reasons are different kinds of communication problems between users and developers during verification of requirements. There is a therapy model, called solution-focused therapy, used in family and individual therapy. The model focuses on solutions for the future instead of problems in the past.

The purpose of this master?s thesis is to examine what needs and expectations the patrons have on the local public library services for adult students. With increased knowledge of these matters the library will be able to support and improve the service for users. The focus is on adult students with immigrant background who study Swedish as second language in a municipal adult education school. The main questions are: How do adult students use the library at present? What do they consider to be most important when using the public library for their studies? How do these expectations correspond to their experience of the library services? Two focusgroups and one in-depth interview were carried out.

The purpose of this Masters thesis is to investigate the reasons for public libraries to have story-time today and also the reasons for story-time at the public library historically in Sweden. Why is the phenomenon of story-time still existing at public libraries today? The study is based on a questionnaire that was sent to childrens librarians in the Västra Götaland region. The material collected in this questionnaire was put together and resulted in six different categories showing the libraries purposes and thoughts of their story-time activities. The categories were: cultural heritage/tradition, joy of reading, language and imagination, library visits, storytelling and mutual experience.

Syftet med vår uppsats var att med hjälp av Model Confidence Set (MCS) finna de bättre presterande modellerna bland de mest ?kända? och undervisade volatilitetsmodellerna. Vidare har vi även rankat dessa modeller inbördes. Eftersom prognoser om volatiliteten är mycket viktigt vid prissättningen på derivat, i detta fall ett räntederivat, är ämnet ständigt intressant. Med Model Confidence Set fann vi ett set av bättre presterande modeller utifrån vårt urval av ursprungliga modeller.

A considerable number young of students are suffering from sociopsychological complaints. The psychological complaints emerge from differnt sources. Important factors for psychological well being are experiences of a satisfactory social network, efficient coping strategies and a supportive school climate.The aim of this study was to examine how young girls in the age of 16-18 years old experience and cope with demands from school. To fulfill the aim of this study we have five questions: What do the girls apprehend as a satisfactory/unsatisfactory working environment? How do the girls define stress? How do the girls cope with stress? What importance has leisure time? What importance has the social network? The method we used for this study was qualitative and the material was collected through four focus groups.

This study focuses on the Nordic model of Extended Collective Licenses (ECL) and how this model can be used in the process of digitalising and publishing archival material such as photos, letters, maps or films. The question that this study aims to deal with is what advantages, and disadvantages, there are for archives and copyright holders when an ECL is being used. To help answering this question the ?theory of the knowledge commons? has been applied. The research question has been answered through a text analysis based on legal texts including Swedish law.

This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.

Karin Holmkvist (2014) Sleep, meals and physical activity among professional drivers during the day with work and spare time. Master?s thesis in health at work. University of Gävle. Night work and irregular work hours affects social and biological rhythms in activity, eating, sleep and metabolism. Researchshows how theworking conditions andworking hours affect professional drivers´ lifestyle and there is a negative impact on their health.

I denna studie har vi haft som avsikt att jämföra två modeller som förklarar avkastningen på aktiemarknaden. Modellerna är Capital Asset Pricing Model (CAPM) och Fama-French trefaktormodell(FF3). Undersökningen har gjorts på Nasdaq OMX Nordic Stockholm över perioden 2002 till 2012. Vi har valt att göra denna undersökning för att se huruvida FF3 med två extra faktorer kan förklara avkastningen på aktiemarknaden bättre än CAPM. Sex portföljer konstruerades och vi har visat att FF3 statistiskt signifikant förklarar mer än CAPM för fem av sex portföljer.

Accounting for financial instruments can either be based on a transactions approach or an eco-nomic approach. Under a transactions approach instruments are reported at cost whereas under an economic approach instruments are reported at fair value. Hence, under a transactions approach realization becomes a criterion for recognizing fair value fluctuations as revenue whereas under an economic approach it does not. A mixed model is defined as a combination of the transactions approach and the economic approach insofar it records some accounting items at cost and other items at fair value. The mixed model gives rise to an issue commonly referred to as an accounting mismatch.

This thesis takes a closer look at the USA Patriot Act and the literary debate that has followed the passing of that Act. The aim of the thesis is to define what freedom is for the two opposing sides using McCallum's freedom model.The literary analysis shows that the most common argument from authors who are pro Act is that in desperate times like these one must relinquish a part of the individual's freedom to ensure the safety of the collective. Amongst those authors who are against the Act concerns are raised for the possibilities of abuse as a result of increased government power such as the ability to detain immigrants for long periods of time, surveillance and increased exchange of information between federal agencies..