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1402 Uppsatser om Hypothesis tests - Sida 58 av 94

Invandrares nätverk och sociala kapital

Abstract The increased focus on social capital theory has made its way into labour economics. This has led to the creation of a vast literature about the use of networks and informal search methods in the labour-market, a literature that to some extent also deals with immigrants search behaviour and their relatively high unemployment rate. Characteristic for the literature in the area is the lack of analysis of actual networks. Which types of contacts do these networks contain; how are the networks used in the labour-market; and which type of network generates a high amount of social capital. These questions are important for the general understanding of how social capital functions, within the labour-market, but also for the understanding of how immigrants use their networks in order to find themselves jobs.

Framing al-Qaida : En komparativ studie mellan två tídningars "inramning" av al-Qaida

Aim: The study's aim and run-up are to investigate how journalists frame texts, during impact of those standards and values that they have, combined with the organization and in the nation where they work.Method/Material: The study looks on how the authors of articles at the Swedish newspaper "Dagens Nyheter" and the Norwegian newspaper "Dagbladet", uses the concept al-Qaida, in their news rapport, during the period 19:th of mars ? 24:th of august 2003. Two hundred articles were collected and divided into two groups, 1) the explicit group, there the text actu ally treated al-Qaida, 2) the implicit group, there the text e.g. linked to the name al-Qaida and the article itself treated another subject. Is it possible to see differences or resemblances, in the way that journa lists frame their texts? The main theoretical run-up is framing accor- ding to R.

Personalnedskärningar och aktiepriser : En eventstudie av sambandet mellan personalnedskärningar och aktiepriser under perioden 2008-2012

Purpose: The purpose of this thesis is to investigate whether abnormal stock returns could be identified as a result of a layoff announcement during weak economy.Method: An event study methodology.Theory: Efficient market hypothesis, signal theory.Empirical results: Quantitative data from observations of stock prices in thirty two companies listed on the Nasdaq OMX Stockholm, in the period 2008 -2012.Conclusion: The results indicate that the market reaction was negative because there were negative abnormal returns on the Stockholm Stock Exchange during the period 2008-2012 in connection with the layoff announcements. The market reaction was milder when staff reductions were carried out as a result of a restructuring and stronger when staff reductions were carried out as part of a cost reduction program.The layoff announcements elicited different market reactions depending on the company's industry affiliation. The most negative reaction was in the Healthcare industry. Negative abnormal returns were lower in industries Industrials, Consumer Services and Consumer Goods. There were no abnormal returns for shares of companies in the industry Financials.

Nedskrivningsprövning av goodwill - En studie av de WACC antaganden som gjordes av svenska noterade bolag under åren 2007-2009

PurposeThe purpose of this study is to examine the companies on Nasdaq OMXS Large and Mid Cap to see if there are interesting patterns regarding their WACC assumptions, used when performing impairment tests on goodwill, during 2007-2009. If so, can we explain these patterns? MethodWe have gathered information about the WACC assumptions presented in the annual reports of the 133 companies that were listed on OMXS Large and Mid Cap during the spring of 2011. To complement this quantitative information we have also conducted an interview with Peter Malmqvist and contacted eight of the companies that were in the study.ConclusionWe can conclude that not all companies present their WACC assumptions in the annual report, even though IAS 36 states that this should be done. Of the 45 companies that were included in our study, eight had lowered their WACC during 2008 and increased it in 2009.

Alternativ till fortsatt elektrisk generering i Olidan

In this thesis a possible cost effective runner change of some of the units in the hydroelectric power station Olidan is investigated. The possibility to drive a unit at the same efficiency point through a change of the turbine shaft speed and the rate of discharge is tested. Furthermore the theories behind model testing, determination of efficiency increase from model to prototype and efficiency measurements shall be discussed and analyzed with Olidan as a starting point.A predicted curve has been built on information from model tests and field measurements on the existing runners and runner data from the test of the new model. The predicted curve shows the difference in efficiency between an existing runner and a modern one. It is the difference in efficiency that is used in the calculations that are to show whether changing to a pair of new runners will be cost effective or not.

Segmentering och klassificering av LiDAR-data

With numerous applications in both military and civilian life, the demand for accurate 3D models of real world environments increases rapidly. Using an airborne laser scanner for the raw data acquisition and robust methods for data processing, the researchers at the Swedish Defence Research Agency (FOI) in Linköping hope to fully automate the modeling process.The work of this thesis has mainly been focused on three areas: ground estimation, image segmentation and classification. Procedures have in each of these areas been developed, leading to a new algorithm for ground estimation, a number of segmentation methods as well as a full comparison of various decision values for an object based classification. The ground estimation algorithm developed has yielded good results compared to the method based on active contours previously elaborated at FOI. The computational effort needed by the new method has been greatly reduced compared to the former, as performance, particularly in urban areas, has been improved.

Kreativa föräldrar - En fallstudie om föräldraskapets och föräldraledighetens effekt på förälderns kreativitet i arbetet

Parenting and parental leave in a career context is a highly topical subject in which discussions about gender equality and corporate discrimination against parents occur daily. Media has recently raised the theory of parenting and parental leave as having positive impacts on personal development, such as creativity enhancement, which may promote the individual's work performance. Despite the subject's significant value for society and organizations, no scientific research is to be found. This paper examines how an individual's creativity at work is affected when becoming a parent and if parental leave has any contributory effect. Furthermore, the paper identifies and scrutinizes four creativity theories that may help explain these changes in creativity.

Meritpoäng : Ungdomars livschanser ur skolchefers perspektiv

This C-essay is a qualitative study designed to create a basis for understanding how managers involved in school affairs perceive the impact of merit points on students? chances to continue on to higher education and how this will affect individuals' life chances.The study is based on three interviews with managers involved in school affairs. In this paper grades, merit points and socioeconomic class differences are discussed.The aim of this paper is to answer the following questions:? What impact does merit points in language studies and the way different languages are valued, in the system, have for the individual and for society?? Who are the winners in the new grading system and who are the losers; how are different socioeconomic groups affected?The material was interpreted with the help of a report written by Ingrid Nordqvist and Monica Langerth Zetterman called "Secondary School competition field-a regional perspective", a paper written by Helen Raven who did a study on grades, national tests and social reproduction and the Frenchman Pierre Bourdieu's theories.The results show that class differences will increase and that it will be difficult to rise in the social hierarchy in the future..

Genetiska defekter hos nötkreatur :

Genetic defects are caused by mutations in major genes where the gene?s protein product has a large impact on the physiology of the animal. The synthesis of the protein can be altered by a change in the nucleotide sequence, which can lead to malformation and in many cases death.One of the main reasons of increase in many genetic defects is the use of few bulls in breeding programmes, causing a reduction of the genetic variation. Genetic defects cause suffering for the animal and influences the production by, for example, increased costs due to misscarriages, lost milk production and expenditure for medical treatment. Bovine Leukocyte Adhesion Deficiency (BLAD) and Complex Vertebral Malformation (CVM) are two genetic defects that were widespread before the causative mutation was discovered.

The distribution of Moose (Alces alces) during winter in southern Sweden : a response to food sources?

The traditional Swedish way of dealing with browsing damages made by moose, is to reduce the moose population. However, a growing way of dealing with damages made by several ungulate species, including wild boars in particular is to redistribute them with supplementary food sources. Attracting them to settle in habitats less vulnerable to damages made during foraging. This study we tracked collared moose in southern Sweden from January throughout April in the year of 2009. From the tracking data their ?favourite? positions was selected and visited in order to study the features that attracts moose during winter.

Optimering av skumdämpande additiver För användning i en lufttorkande vattenburen rostskyddsprimer

The development of defoaming additives is steadily progressing and there are therefore always new and improved additives on the market. Some modern additives provide the desired defoaming effects by themselves, in contrasts to previous additives that needed to be used in combination with other additives. The task of this bachelors thesis was to evaluate the possibility of using these improved defoaming additives, with the aim to find alternatives that give the system better defoaming attributes while, at the same time, using less of the primary products. The tests were carried out in the coating type Teknocryl Aqua Combi 2780. The coating is a waterborne air drying acrylat-latex/alkyd based coating that can be used for both single coat painting and primer.

Integrering eller tillägg : En kvalitativ studie om inkludering av jämställdhetsperspektiv i historieundervisning på gymnasiet

The aim of this paper is to elucidate and analyze history teacher's didactic choices in the conflict between unequal educational materials and the requirements of equality in the curriculum of Swedish secondary school. The empirical data consists of interviews with five secondary school history teachers, observations of their lessons as well as analysis of their tests. The starting point was to investigate teachers' didactic work in the role as a bridge between the non-equal historiography presented in textbooks in history and the curriculum?s demands for equality. Three different approaches have been observed in the teachers' didactic work when considering gender perspective into their teaching: that women become extensions in a male-dominated historiography; that another part of the story is presented when a gender perspective is considered; and that the gender perspective is included in history teaching and becomes an integral part of all the content of the subject.Several of the teachers acknowledged that gender equality is less prioritized than the courses core content and related assessment criteria.

Att arbeta med pedagogisk dokumentation för att överbrygga klyftan mellan teori och praktik : Ett undervisningsförsök för att skapa större förståelse i frisörutbildningen

The aim of this project was to change the way cutting techniques are being taught. I wished to try a method which I believed to enhance my students´ participation and understanding of their education. My purpose was to reduce the gap between theory and practice. After conducting a learning style test I found that most of them considered the best way for them to learn was by combining practice with dialogue and reflection of the tasks being done. That is why we tried to start working with the practical elements rather than traditionally starting with the theoretical aspects, while carefully intertwining terms and language of the trade into the education.

It's 'like' a #perfectday : En fallstudie om hur och varför lyssnare av poddradion sprider budskap om produkter vidare på sociala medier

Recent years have seen a dramatic increase in podcast listening in Sweden. As a result, podcasts has become attractive in marketing purposes among enterprises and organizations. It has also been revealed that the messages about products advertised in podcasts not only spread among the listeners, but also among their friends when publishing on social media. Research in this area has shown that messages spread on social media is a process which not only involve the transmitter and the receiver but also a third party, that is other individuals in the receivers network. This study reveals possible reasons to how and why listeners of the podcast spread commercial messages on social media.In order to identify general trends and to acquire an understanding of the phenomenon about podcasts a case study on Fredagspodden, produced by Hannah Widell and Amanda Schulman, was done.

Kapitalstruktur i banker, en jämförelse mellan Storbritannien, Sverige och USA

Background and problem: The importance of banks was clearly shown during the last financial crises, when the crises that started in the banking sector spread to the rest of the world. This is one of the reasons that this thesis is focused on banks in particular, one other reason is that a lot of previous studies has chosen to exclude banks because of the fact that their balance sheet differ from non-financial companies. This thesis is a beginning in filling in the gap that exists in the knowledge of banks capital structure. Purpose: The purpose of this thesis is to prove that it is possible to explain the capital structure in banks and that differences in the capital structure of the banks in Great Britain, Sweden and the United states of America exists. Method: The fact that our study is partly a replication of two earlier studies made a deductive approach most appropriate.

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