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14305 Uppsatser om Difference- in- difference analys - Sida 6 av 954

Etablering av höstvete med reducerad jordbearbetning :

The payment for produced grain is constantly going down in price. It is important for farmers to become more effective in cultivating more land in a shorter time perspective. At the same time we have to calculate with the risk of getting lowered subsidies from the EU. This is why I would like to find out the possibilities for establishing winter wheat without ploughing. I hope to find a difference in the number of plants due to different soil preparations. With this experiment I expect to find out whether I can establish winter wheat at a lower cost, with the same numbers of plants per square meter.

Involvering och värdeskapande i portföljföretag : Statliga och privata venture capital-företag

The major difference between venture capital-firms and other financiers is that their business idea is not only providing capital but also knowledge in business development. The ownership structure of an venture capital-firm can be private as well as public. The Swedish government is today one of the major actors in the Swedish venture capital-industry. The purpose of this study is to shed light on how venture capital-firms involve itself in its portfolio firm and if this contributes to an increased value of the portfolio firm. We also try to shed light on differences in how a public and a private venture capital-firm gets involved in its portfolio firm and if there is any difference in how they can contribute to added value.We have chosen to interview two public and two private venture capital-firms and one of their portfolio firms.

KONTROLLBERÄKNING AV ETT TAKRAS PÅ EN TENNISHALL I NYKÖPING : En jämförelse mellan Eurokod och BKR

?Boverket? the Design Regulations in Sweden, also called BKR has for a long timebeen the mandatory standard that has guided and regulated construction design. Butat the end of 2010 BKR was replaced with Eurocode. This report deals with thecomparison of these two standards when it comes to wood construction. Duringwinter 2009/2010 there were many roof collapses due to excessive loads on theroofs across Sweden.

La?kemedel i samband med graviditet ? en granskning av graviditetskategorier fo?r la?kemedel verksamma pa? nervsystemet

The idea with this study is to examine if there are a connection between how optimistic people are in relation to how stressed they feel. The result from the survey is based on materials from a questionnaire has been sent to fifty persons of varying age and sexes. The questionnaire has also been sent to students from Karlstad University but also to friends and acquaintances. The data is measured with SE- and LOT-tests. The issues concerned in which scope respondents experiences themselves stressed and optimistic and how the connection is between experienced stress and optimism in relation to results on the figure tests.

Framtagning av normalt referensintervall för RDW och retikulocyter på hematologiinstrumentet ADVIA 2120

Erythropoiesis is a complex and carefully controlled process which is mainly regulated by erythropoietin. Using flow cytometry cells in a blood sample can be analyzed one by one. ADVIA 2120 using flow cytometry for analysis of red blood cells (RBC) and reticulocytes. Red blood cell distribution width (RDW) is a component of the RBC method. RDW indicates size variation on erythrocytes and is measured as a percentage of the mean cell volume (MCV). By measuring the RDW anemia can be divided into makrocytic, microcytic or normocytic. Reticulocytes refract light more strongly than red blood cells because they contain some cellular debris. The number of reticulocytes in the peripheral blood reflects erythropoiesis in the bone marrow. The purpose of this project was that by approved methods to establish reference ranges for the parameters, RDW and reticulocyte counts.The individuals who participated in the study, n=124, were considered healthy and had varying ethnicity. Reference subjects had not donated blood the last six months and participation in the study was voluntary.The statistic evaluation includes examination of distribution, and reference ranges for both men and women were established using the 2.5:t and 97.5:t percentiles. The calculated reference interval for RDW was between 12.0 ? 14.3% and the calculated reference interval for reticulocytes was between 38.0 ? 112.8 x109 cells/L. The results showed a significant difference between males and females for the parameter reticulocytes was seen. The difference indicates that different reference ranges should be established for men and women (p<0,0001). No significant difference between males and females were seen for RDW (p=0,74) indicating that the same reference ranges can be used for both men and women. .

Idrottslärares tankar kring hälsa : Hur uppfattar lärare i idrott och hälsa begreppet hälsa?

The goal with this study have been to investigate how teachers in physical education perceive health as a concept, and how they choose to work with in the classes they teach. Health as a concept can be somewhat diffuse and as the Swedish curriculum doesn?t define the concept the teacher are given a freedom in interpreting what health is and how it will be taught to the students. This makes it interesting to study if teachers perceive health differently and if that affect what they are teaching their students.I used interviews as a method to answer my questions and the results show that there wasn?t much difference between the teachers in how they perceive health and how, and what, they teach their students.

Tillgänglighetens frihet : En studie av Vägverkets måltolkning

In this paper I study how the repeal of the Swedish wealth tax (1 of January 2007) has affected people´s labour supply behaviour. This particular issue is relevant because it may help us understand some of the effects of the earnings tax changes that have taken place in Sweden. Accoring to standard economic theory a repealed wealth tax is similar to an income effect for the persons who previously paid the tax. That means that they theoretically will want to consume more leisure, that is decrease their labour supply. The method I am using to test this hypothesis is a difference-in-difference approach where the treatment group consists of persons who previously paid the tax and the control group of comparable persons who did not pay the tax.

Hälsoutbildningens påverkan på psykologiska resurser hos chefer och anställda

This study is a quantitative study designed to examine whether training in health issues may have contributed to the increase in head managers' psychological capital (PsyCap). Construction consists of the following components: self confidence, hope, optimism and resilience. A high PsyCap considered beneficial in organizational change and steer towards the positive development and helps individuals in stressful situations. The results show an increase of characteristics such as hope and optimism among managers (N = 15) who have undergone training in health issues compared with managers who have not undergone training. However, the tests show no significant difference in head managers' attitudes to health breaks, not the severity of granting health breaks in the groups as a result of training.

Träning med mål och coachning för patienter med knäartros

Aim: To investigate if physical exercise in combination with coaching will reduce pain and improve knee function in patients with mild to moderate osteoarthritis in the knee compared to physical exercise alone.Method: The study consisted of 42 patients who were randomized to either an intervention group or a control group. Both groups followed a standardized training program at home, but the intervention group received additional support with regard to the aim of their training, as well as extra coaching during the training period of ten weeks. A Visual Analog Scale (VAS) was used to evaluate the patients? pain. A 10 metre walking test, the Index of Muscle Function (IMF) and the Knee injury and Osteoarthritis Outcome Score (KOOS) were also used to evaluate knee function.

Förekomst och grad av osteokondros i distala radius och ulna hos konventionellt och KRAV-uppfödda slaktsvin :

The occurrence and degree of osteochondrosis was studied in 64 pigs raised in conventional systems (45) or organically according to KRAVs principles (19). In this blind study the growth plates of distal radius and ulna were examined macroscopically and radiologically searching for pathological lesions. One significant difference was shown in this study. Conventionally raised pigs diagnosed with osteochondrosis had more severe lesions in the distal growth plate of radius and ulna than the corresponding group of pigs raised organically. No significant difference was shown between the groups when all pigs were included. .

Överlevnad och tillväxt för nyplantersade barrots- och täckrotsplantor : en studie av 42 bestånd i södra Sverige

The choice between bare-rooted and containerized seedlings in southern Sweden affects the investment costs as well as growth and survival. It is important to take these differences into account when choosing seedling type for reforestation. The most important differences between the two seedling-types is that bare-rooted seedlings has open root systems whereas the roots of containerized seedlings are grown in a container which may contain water and nutrients that are available for the seedling during the first period after planting. Moreover, bare-rooted seedlings are often older which results in thicker stembase and better resistance to attacks of pine-weevil (Hylobius abietis). In order to study differences in survival and growth between bare-rooted and containerized seedlings a survey study of newly planted clearcuts in south-western Sweden was made. In the study tree seedling types was included, one bare-rooted and two containerized with different ages. The population of pine weevils was probably low during the studied period which resulted in lower pine-weevil damage than normally found in this area.

Metadata i publikationsdatabaser Hur används DSpace?

The aim of this bachelor thesis is to study how libraries handle metadata in institutional repositories. The methodology of the study is semi-structured interviews with librarians from all Swedish libraries that currently use the institutional repository system DSpace. Metadata schemes from the different libraries have also been studied. As analytical tools the study uses the user tasks presented in Functional Requirement for Bibliographic Records, as well as a study of metadata quality made by Jung-Ran Park. The study shows a rather big difference between the ways the libraries use institutional repositories.

Respondentgruppers inställning till IASBs förslag om förbud mot återföring av tidigare nedskriven goodwill

The purpose of this paper is to examine whether there is a difference between the respondent groups preparers and non-preparers position in IASBs question if a reversal of previously impaired goodwill should be prohibited. The background is an exposure draft sent out by the IASB and we examine the answers, in form of comment letters, sent in by the respondents to reach our purpose. Our method is positivistic in the sense that we study already existing theories when we create our hypothesis which gives our assumption about how the result of the respondent?s answers will be. Our data, which we have collected from the comment letters, is qualitative secondary data.

Skiljer sig riskuppfattning och riskhantering mellan kvinnliga och manliga privata skogsägare? : en enkätundersökning bland privata skogsägare i Sverige

As a forest owner you always have to consider hazards and uncertainty when planning your forestry actions. The aim with this report is to test my hypothesis that there is an overall difference between men and women when it comes to perception, estimation and management of hazards/risks in forestry. I will look into if there are differences in how men and women estimate risks in production forestry from an economical point of view. The aim is also to look into if there are differences between male and female private forest owners, in how they perceive and manage hazards in connection with a possible climate change. To fulfil this aim, an inquiry survey was undertaken in three different areas of Sweden, two areas in the south and one in the north. But in this report I have evaluated the three areas as a whole.

Mönsterframställning- en studie om processen från idé till produkt

ABSTRACTMusic and differences in knowledge ? a study of music teachers experiences with differences in musical knowledge. The purpose of this paper is to, out of a music teacher?s perspective, see if the differences in music abilities between 7th grade students are at all, or in some ways connected to the previous schools they?ve attended. I will also research in what areas, in the subject of music, students are differing more, as well as less, in their knowledge. The analysis is based on interviews with six 7th grade music teachers working in the Swedish nine-year compulsory school system.

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