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7179 Uppsatser om Fixed effect modell - Sida 17 av 479

Dragleksak för Playsam

The report is a project in cooperation with the Swedish toy company Playsam. The assignment was to design a new toy to their range of products, a pull along toy in shape of a snail with a mechanical function. The research phase contains studies and analysis of the company, its identity, product range and its customers. The research phase includes all the information needed to complete the project. A number of concepts were presented for evaluation by the company.

Ska vi använda Stor bokstav . och ? : Kan intensivundervisning under en kort period öka elevers förståelse för användandet av stor bokstav, punkt och frågetecken?

Are we able to help younger students to develop their understanding and their use of the capital letter, dot and question mark by giving them intensive teaching on the subject during a short period, and would the effect be long lasting?I decided to investigate this together with young students in second and third grade and at the same time try to see which grade would benefit most.By using an experimental research design I conducted the investigation in a class with children from both grades where the result was compared with two similar control groups. The investigation lasted during five months, while the students were able to show their knowledge in the subject just before and after a two weeks period of intensive teaching and then again after four months.The result showed that the intensive teaching had an effect that lasted over time and that it was the students in second grade that would benefit most. .

Vem har bäst betyg? : en kvantitativ studie om betygsfördelning

Aim: The study aims to investigate the distribution of grades between students in a practical subject and in a theoretical subject.The problem:What is the grade distribution in physical education and mathematics, with respect to gender, socioeconomic background, parental education, ethnicity, and physical activity?Method:To answer the aim of the study a quantitative method was chosen. As the collection method used was questionnaires to 620 students in the 9th grade in Stockholm. Of the 620 questionnaires, 597 questionnaires were used for the static analysis. The method of analysis used cross tables and logistic regression analysis.

Effekt av tillskott med isoflavonoider från sojabönor på LDL-kolesterol hos vuxna - En systematisk översikt

Sahlgrenska Academyat University of GothenburgDepartment of Internal Medicine and Clinical NutritionAbstractTitle: Effects of isoflavone supplementation from soybeans on LDL-cholesterol levels in adultAuthors: Malin Blomgren Alegria and Ruut ReivaaraSupervisor: Lena HulthénExaminer: Frode SlindeProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: 2013-04-08Background: One of the most common causes of death in Sweden is due to cardiovascular diseases such as heart attack and stroke. Hypercholesterolemia is one of the risk factors for cardiovascular disease. In Asia, hypercholesterolemia is less common than in the Western countries. In Asian countries, soy products are consumed in larger quantities than in the Western world, which has led to implemented research with the intention of examining soy's potential effect on cholesterol levels.Objective: To investigate whether there is scientific evidence that isoflavone supplementation from soy bean may have a lowering effect on LDL-cholesterol.Search strategy: The databases used for the systematic literature search were PubMed, Scopus and Cochrane. Keywords used were cholesterol and 9 versions of this, and isoflavones and 11 versions of that.Selection criteria: RCT articles, on humans, written in English, published from 2011 onwards, that focused on interventions with isoflavones from soybeans and its effect on blood cholesterol, the participants were over 18 years old and the study time was at least 24 weeks.

Prevalence of congenital defects in Swedish Hampshire, Landrace and Yorkshire pig breeds and opinions on their prevalence in Swedish commercial herds

This study concerns congenital defects in pigs; umbilical and scrotal hernia, cryptorchidism, kyphosis, splay legs, anal atresia, intersexuality and congenital tremor. The aim was to describe and estimate the prevalence of these defects and estimate the heritability for the most frequent defects, scrotal hernia and cryptorchidism in purebred Swedish Hampshire, Landrace and Yorkshire populations. Furthermore, information and opinions from herdsmen in commercial herds was collected and analysed. A low proportion of congenital defect pigs is of importance both from animal welfare and economic point of view. The accuracy of registration of the presence of defects in the litters has a decisive role for the ability to select against these defects.

Har ungdomsarbetslösheten påverkats av regeringens sänkning av arbetsgivaravgiften?

Sweden has for years been struggling with high youth unemployment. The problem is also a hot topic of discussion among experts and politicians, often leading to different proposals to solve the problem. The government chose in 2006 to do something about youth unemployment by lowering payroll taxes for employees up to 25 years. But many experts and studies show that the effects failed to materialize.This study will try to find out if the government subsidies have given any effect on the youth unenployment either by new jobs created or by movement in the labor force. I will use a regression model with an dependent, "difference in difference" variable where the change in the number of employed young people are compared to the change in the number of employed in the subsequent age group.The results show that subsidies are not given any positive effect on the youth employment rate in relation to the subsequent age group..

Utvärdering av den svenska cykelhjälmslagen för barn under 15 år : Analys av nationella trender i cykelrelaterade huvudskador mellan 1998-2011

Introduction: In January 2005, a nationwide mandatory bicycle helmet law for children under the age of 15 was introduced in Sweden. In the current study, the effect of this law was evaluated by analyzing national trends in hospital admissions due to bicycle-related head injuries during the period 1998-2011.Methods: An interrupted time-series design with segmented regression analysis was used to evaluate the intervention effect on head injuries as a percentage of all injuries (%HI) among cyclists in age- and sex-specific groups. Effect was measured as a change in level and/or slope of the trend at the time of legislation.Results: A total of 35261 cyclists (0-54 years) were hospitalized due to a bicycle injury during the study period. Linear regression analyses of the entire study period (not segmented) showed significant year-to-year decreases in the %HI of 1.3-1.7% in all age and sex-specific groups (p < .0001). Results from the segmented regression analysis showed that, at the time of legislation, a significant drop in level occurred among males under 15 years (-4.5% [95% CI: -7.7% to -1.3%], p = .01) and a significant change in slope occurred among females aged 30-54 years (-1.6% [95% CI: -2.9% to -0.2%], p = .025).Conclusions: The law seems to have had an effect on males in the target population (<15 years).

Successiv avtalsbundenhet : En beskrivning av modellen och dess närvaro i svensk rättspraxis

Why has some cyber-attacks been more successful than others? There has been in the near past examples of cyber-attacks used with different purposes. How do we understand these chosen targets and what result the attack accomplished?Research has discussed similarities between aviation warfare and cyber warfare, and how the first could explain what is happening in cyber warfare now. There is also opposing opinions whether cyber warfare should be seen as a method to alone force a will on your opponent or if cyber warfare should mere be supporting other military means.

"Jag har blivit en bättre mamma" : En studie om deltagarnas upplevelser av föräldrastöd i grupp

The aim of this qualitative study was to investigate the participants experiences of a parent support group and the effect of their participation on their parental role from a learning perspective. As the parent support group takes place as a group activity, the focus was on the individual learning processes which, in turn, are influenced by both the group itself as well as the leaders of the group. The empirical data was collected from a focus group interview with four mothers, and analyzed using empowerment and coping theories. Based on the participants´ narratives, the result showed that the parent support group had a great social and pedagogic effect on the participants. As a result of the received knowledge in the group from both leaders as well as from other participants, they felt less stressed and more confident in their parental role.

Blod, svett & tårar : En studie av vad som skapar varumärkestillknytning till träningscenter

We have examined how the dependence, identity and social bonds affect customer loyalty and attachment to a training centre. The method used is a survey on SATS Karlstad city where 128 respondents were asked, out of which 118 surveys were used in the final analysis. The data was analyzed using ANCOVA and multiple regressions.The result showed significant relationships on attachment between identity and dependence. Social bonds had no significant effect on the attachment a member have towards training centre. Customer loyalty was measured by how long the individual has been a member and his or her training frequency.

Framtagning av krypmodell för termomekanisk FE-analys av grenrör

Grenrören i en motor utsätts för stora termiska och mekaniska belastningar, vilka gör att grenrören ofta spricker. Idag kan inte sprickbildningen fullständigt uttydas ur beräkningarna, syftet med arbetet är därför att se om dessa kan förbättras genom att använda en mer avancerad krypmodell än den som används idag.Ett förslag till krypmodell har tagits genom att studera ett antal i litteraturen funna modeller. De som valts ut är modeller enligt Norton, Bailey-Norton, Marin-Pao, Picket och Findley. Parametrarna i de olika modellerna har bestämts genom kurvanpassning av enaxliga prov på de aktuella grenrörsmaterialen. Resultaten visar att modellerna enligt Marin-Pao, Picket och Findley alla kan beskriva mätkurvorna nästan exakt.

Betydelsen av tidig hantering av nyanlända försökshundar till en försöksdjursavdelning :

AstraZeneca in Mölndal (AZRDM) uses beagles bred at Rååhöjdens kennel in Örkelljunga for their research purposes. The staff wishes to have mentally stable dogs to work with, sine stress can effect the research results. The purpose of this study was to put together the testresults from dogs delivered 2003 and 2004, to see if there is a connection between delivery age and testresult. We have also worked out a method to test if early planned handling of the dogs makes a difference on how the dogs later respond in a testsituation, and tried this method in a pilotstudy. The data that we have based our calculations on is 172 dogs, divided into 108 males and 64 females. We found a significant connection between the age at delivery and the testresult in contactability for female dogs delivered in 2003, where increasing age led to decreasing grades in the test at AZRDM. When looking at the difference in testresults between test number two at the kennel and the test at AZRDM we found a significant connection for female dogs delivered during 2003, ie the difference takes on a more negative value with increasing age at delivery. We found a difference between the two sexes in our calculations.

Valutasäkringar och räntebindningar inom lantbruket : åtgärder för att förbättra ekonomin inom lantbruksföretag

The thesis aims to investigate the farmer?s perception of currency hedging and interest rate bonds and to investigate the farm size of companies categorized by number of acres, has no effect on this. The work also aims to gain an insight into what active farmers consider to be important what to consider when they choosing a bank and a personal banker. The work is based on the survey and has been supplemented by a literature review on the subject. For the survey were selected out randomly 50 farmers with Agriculture and Rural Management education. The requirement of the farmers was that they should be farmers by profession, and also made sure that the farmers of various sizes came with. We got a total of 32 responses within the set response time we said, which was better response than we expected. When the final result came we ranged the farms in a size range. We found out that all farmers in the study diligently follow the market and are easy to assimilate new ideas, providing opportunities to profitability of their business with the different instruments that are available on both the financial level and farm level. The investigation revealed that the major in favor of having a personal banker. They think it´s good to have a special plug to turn to who has knowledge and experience of how the agriculture sector operates.

Elevers syn på klimatfrågan : Klimatundervsiningen i skolan

The aim of this study is to find out in which way the education about climate in school is taught and how the students experience the world situation today. There are various theories about the greenhouse effect and its origin and these theories should be addressed to ensure that students get a broader understanding of how climate change occurs. This includes the natural phenomena and also the human impact on climate change. Students in school are a source of concern that only human are the cause of global warming, and know little or almost nothing about the natural phenomena of global warming.  I will mention what has emphasized in the national steering documents in the case of environmental education at school.I have used a qualitative method, where interviews and document analysis were used as techniques. The interviews took place with five students in ninth grade and with three science teachers in the same school..

Form för funktion

Bakgrunden till detta arbete var att företaget som kontaktades vill ta fram en ny modell av hästsportjacka. Arbetets syfte är att ta fram en modell som har form för funktionen. Vissa funktioner är mer viktiga än andra vid ridning, något som undersöks och presenteras i rapporten. Då många ryttare vistas utomhus blev det även viktigt att undersöka vikten av väderanpassade plagg. Ett grundmönster och en modell tas fram som även graderas.

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