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13603 Uppsatser om Difference-in- differences-metoden - Sida 56 av 907
Mañana mañana eller vi gör det här först? : Några unga människors reflektioner kring spansk, svensk och exemplarisk alkoholkultur
The aim of the essay was to describe what some young Swedish and Spanish people had to say about alcohol cultures. Some of the questions asked were: How are the alcohol cultures in Sweden and Spain described? What are the differences, and where do they come from? What would an ideal alcohol culture look like? The investigation also had a comparing angle, as I was interested in what the people valued in their own culture and in the others´. The result was that there hardly exist a perfect alcohol culture, but that the stricter Sweden as well as the liberal Spain both have positive and negative aspects. Differences in politics and culture seem to create variations in a society´s drinking customs.
En jämförelse avseende beståndsgående-och stickvägsgående gallringsmaskiner
The purpose of this report is to investigate and compare the difference between stand-thinning machines and strip-road thinning machines, and how they affect the stand on behalf of future growth, theoretical economic result, wind impact, snow pressure and density of stand.
The investigation is regarding the first commercial thinning of pine stands, after pre-commercial thinning that was well conducted.
The investigation area was located near Katrineholm, Sweden. The measurements that were measured were strength of thinning and amounts of wind throws, snow-breaks and hauling damages.
The results that emerged, was that thinning with strip-road machines had a significantly higher strength of thinning over all, as compared with the stand- thinning machines (45 percent versus 30 percent).
Comparisons between wind-throws, snow-breaks and hauling damages of the stand could not establish any significant differences between the two methods that were investigated.
Conclusions, over all, were that if forest owners want to have more timber volume left for second thinning and final cut of the stand, the forest owners should choose the method with stand-thinning machines. From the point of view of gentle treatment of the stand and ground damages the choice should be the same.
However, the method with strip-road thinning machines is the most common and accessible method in Sweden. Most likely it is the most economical way to manage the stand for forest owners in present time.
If the method with stand-thinning machines is becoming more common in Sweden, it is suggested for forest owners to consider the stand-thinning method as a candidate for treatment due to economic aspects..
Hästars aktivitet och liggtid på madrasserade gummimattor i box
Sleep is essential for all mammals and they all have different sleep patterns. Wild horses normally spend 2-8.5% of a 24-hour period in recumbent position while stabled horses lie down 11-20%. To fulfil the need of rapid eye movement (REM) sleep the horse must lie down with support against the ground for the head. The lying behavior can be affected by external stimuli such as age, food intake, bedding materials and if the horses feel safe or not. This study investigates the lying behavior of horses on different bedding materials; wood shavings and filled rubber mats (HIT SoftBed®).
Effekter av stresshantering utifrån Acceptance and Commitment Therapy (ACT) och övningens betydelse för förändrat förhållningssätt hos universitetsstudenter
The aims of the present study were to implement and evaluate a three-session Acceptance and Commitment Therapy (ACT) stress management intervention in a non-clinical group of university students (N = 25) and to investigate the importance of practice in an ACT-intervention. A design with pre-test and double post-test was chosen. A comparison was made between a nine-hour ACT-intervention containing practice for the participants, a two-hour lecture on ACT and stress management containing no practice for the participants and a control group. Psychological flexibility was assessed with Acceptance and Action Questionnaire-2 and mindfulness was measured with Kentucky Inventory of Mindfulness Skills. Perceived stress level was measured with Perceived Stress Scale.
Trafficking i Norden : en komparativ studie av de nordiska ländernas handlingsplaner mot människohandel för sexuella ändamål
This essay focuses on how trafficking in human beings for sexual exploitation is defined and dealt with in the Nordic countries. Agreements on how trafficking for sexual exploitations should be dealt with is presented in reports and Action plans from the European Union and United nations amongst others. In this essay we will compare four national Action plans made by governments by Denmark, Finland, Sweden and Norway between 2005- 2011 to each other. Mainly we have been looking at similarities and differences in the different Action plans. The essay is based on Discourse theory and discursive struggle and we have been looking at similarities and differences in how trafficking is dealt with through language.
?Av kvinnor, för kvinnor. Fy fan!? En kvalitativ studie av hur sex svenska folkbibliotek integrerar jämställdhetsaspekter i sin användarorienterade verksamhet.
This master?s thesis investigates how six Swedish public libraries integrate equality aspects in their user oriented activity. The theoretical starting point for the study is that Sweden is a part of a gender system characterized by gender separation and male superiority, as described by the Swedish historian Yvonne Hirdman and theories that argue that femininity and masculinity are social constructions. Another starting point is that the library sphere cannot be separated from the gender inequality in society. Since the library is part of a gender system that value individuals who are seen as males and separates men and women, some of the library users may be neglected.
Diagnostiksystem i gaffeltruckar
This is a final thesis done at BT, considering one of their forklift truck models called Reflex. The first part of this report is about a preliminary investigation investigating what kind of diagnostic systems BTwants to use, and also which demands there are to meet all expectations on such system. Secondly a diagnostic system, which will show if the drive wheel is worn out, will be presented. In the preliminary investigation, two kinds of diagnostic systems were mentioned. These were Model based diagnosis and Predictive analysis.
En pilotstudie av hästens beteende vid olika boxgrannar och boxdesign
SUMMARYThe Swedish laws of animal welfare emphasize the social needs of the horse but nothing is said about how to fulfill this. Though there are few studies done in this subject it can be difficult to understand if the needs are fulfilled. The purpose of this study was to learn more about the horse?s social needs in box stable and to increase other people?s knowledge and understanding of the horse behavior to increase the welfare of the stabled horse. The questions where: How does the horse choose to place itself depending on what horse is next to it? How many attempts does the horse do to take contact and nose contact with the horse next to it? How does the box design affect the horse behavior?22Eight horses were videotaped during 24 nights.
Förenliga motsatser? : En jämförande studie om aggregering och deliberation i två e-petitionssystem
This essay sets out to compare political participation in two e-petition systems: The Malmö initiative in Malmö, Sweden, and Better Reykjavik in Reykjavik, Iceland. The main question of the essay concerns the aggregative and deliberative qualities of the Malmö initiative and Better Reykjavik, as well as the relationship between aggregation and deliberation. This main question is divided into four subqueries that lead the empirical analysis. These are: (1) Which similarities and differences in terms of design are there between the Malmö initiative and Better Reykjavik? (2) To what extent have these systems mobilized an aggregative political participation? (3) What similarities and differences are there concerning aspects of deliberation? and (4) What is the correlation between aggregation and deliberation like in the two e-petition systems?The method in use is a comparative cross-sectional study with a 'most similar research design'.
Skillnader mellan katalogiseringsregler för ljudupptagningar: En fråga om syften och principer?
The aim of this thesis is to describe and compare the cataloguing rules for sound recordings: the rules used by a specialised archive and common libraries respectively. We will put the rules in relation to purposes (the objectives of a bibliographic system) and principles (directives that guide the construction of a bibliographic language). The first question to be answered is in which way the set of rules used by a specialised archive differ from the one used by common libraries. The second question examines if and how the differences can be derived from purposes and principles. The sets of rules studied are KRS (chapter 6) and the Swedish version of the IASA Cataloguing Rules (1999), worked out by the National Archive of Sound and Moving Images (SLBA).
Diversifieringsmöjligheter och deras effekt på avkastning : en jämförande studie av etiska och traditionella fonder
Aim: Based on portfolio theory, which highlights diversification, and CSR, which describes the value of social and ethical responsibility of corporations, this study examines whether there is a difference in risk-adjusted performance between ethical and traditional mutual funds. Ethical funds are limited in their opportunities of diversification and should therefore be limited in their potential perfomance. On the other hand, a focus on social and ethical responsibility can be profitable.Method: The study uses a quantitative approach where we used 25 mutual fund in each category, ethical and conventional mutual funds. The mutual funds and their data has been obtained from www.morningstar.se and www.pensionmyndigheten.se. Historical performance between 2009-2013 were processed to obtain the Sharpe ratio and M2.
Klickers ur ett studentperspektiv : Studenters uppfattning av klickers vid Uppsala universitet
Audience responese technology (ART) often called clickers are becoming more common, not only internationally but also at Swedish universities. No direct Swedish research has been identified, this is however a major area of research internationally. There is both research on clickers positive effect on study results and how students feel about using clickers. This study has taken a Swedish translated version of Cheesman, Winograd, and Wehrman?s (2010) survey to investigate how perception of clickers differ between students in Disciplinary Domain of Medicine and Pharmacy and Disciplinary Domain of Science and Technology.
Uppfattning om information avseende kost och fysisk aktivitet vid adjuvant behandling mot bröstcancer
Aim: To describe perceptions about written and verbal information regarding diet and physical activity in women with breast cancer and to study possible differences between ages and perception. Method: A cross-sectional study was conducted and consisted of 57 women with breast cancer stages I-III who started adjuvant chemotherapy within a year (2007-2008). A questionnaire, regarding their perceptions about the written and verbal information they had received about diet and physical activity, was responded to three months following treatment completion. Between 67-93 % of the participants responded to the questions. The answers was analyzed with descriptive statistics and Mann Whitney U-test.
Trädens utveckling efter att de har lämnats som naturhänsyn : tillväxt, mortalitet och strukturell förändring 6-18 år efter avverkning
Today green tree retention, together with leaving dead wood, is a common practice with the aim to reduce negative impacts on biodiversity and environment due to clear-felling. To better understand whether this conservation practice also makes a long-term difference, it is important to know what happens to these trees after harvest. Few studies have made an assessment of what happens to retention trees over a longer time period. In this study I inventoried retention trees that were left at clear-cuts six, twelve and eighteen years ago. I carried out a re-inventory of 57 retention patches (divided into free-standing tree groups, small swamp forests and edge zones) and free standing dead trees, spread over 25 previous clear-cuts in central Sweden.
Optimism & Känsla av Sammanhang : En Jämförelse Mellan Tjänstemän och Kollektivanställda
We set out to compare two different categories of workers: the, so called, white- and blue collar workers. The studies aim was to measure if there were any observable differences between the two in means of optimism and sense of coherence. There are two tools created for measuring optimism and sense of coherence, the Life Orientation Test ? Revised (LOT-R) measures an individual?s level of optimism and Aaron Antonovsky devised a test for measuring an individual?s level of sense of coherence (SOC). Optimism is best explained like a way to measure anticipation, how an individual expect future events to fall out.