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14305 Uppsatser om Difference- in- difference analys - Sida 27 av 954
Drainfill
Ocean Thermal Energy Conversion, OTEC, a technology using the temperature difference between cold deep seawater and warm surface water, can extract the work in the form of electricity. OTEC gives also synergies of drinkable fresh water. The temperature difference has an impact on the efficiency of the technology, which means that the feasibility of OTEC is geographically limited. The project intends to explore the possibility of replacing the atoll Tarawa?s present electricity generation with an OTEC plant and to explore synergies. In the present situation all of Tarawa?s electricity is generated by fossil fuels.
Effekter av kön, ålder och region på sjukpenningen i Sverige - en variansanalys
According to TCO (The Swedish Confederation for Professional Employees) the worst threat to the Swedish welfare is that so many people because of bad health and unemployment are not a part of the labour force. If Sweden could make the number of people with health and unemployment problems half the size as today, the GDP would increase with more than five percent. In real money this means 110 billion Swedish kronor a year. According to SCB (Statistics Sweden) the difference between women?s and men?s absence owing to illness should be investigated more closely in order to get at better understanding of the problem.
UPPBYGGNADEN AV DET DIGITALA BIBLIOTEKET PÅ ISLAND
Close to the city center of Reykjavik lies the combined national- and university library of Iceland. Usually, these two types of institutions are separated. The purpose of this essay is to investigate how the library in fact selects the new digital material to offer the users in Iceland, and if the combined mission creates any problems or conflicts.The investigation examines the planning and the content of the digital library, what user groups are addressed and how the organisation is held together despite the different missions. If cultural context in Iceland makes a difference for what is selected and offered to the users is also discussed.Six informants in strategic library positions dealing with the digital national- or university library, were interviewed. The answers have been analysed in light of the library&information literature on building and maintaining digital library collections and organizational and marketing theory.The main result of the study is that the informants do not see a conflict between the missions of the organisation, although traces of a struggle were found in some areas.
"Killarna spelar mest fotboll. Tjejerna leker bara tillsammans hela tiden typ" : ? En studie av barns uppfattning av relationen mellan lek och kön analyserat ur ett genusperspektiv
Abstract The purpose of the study is to examine how children perceive the relation between play and sex and analyse it from a gender perspective. This by answering the questions: "Is the children?s choice of place, materials and company in play dependent on gender?" and "Is there a significant difference between the sexes and/or ages?" The study was done through twelve focusgroup interviews with three children in each group except two groups of two children in each. Eight boys and nine girls of six years old and nine boys and eight girls of nine years old were interviewed. Boys and girls were interviewed in separate groups and the questions were open ended and followed up.
Bankernas roll i ett hållbart samhälle : om bankers CSR-arbete
Lately it has become more common to question the companies? actions in how they affect their surroundings. Today, the expression ?Corporate Social Responsibility? often is mentioned in this connection. Corporate Social Responsibility (CSR), is a concept whereby companies voluntarily integrate social and environmental concerns in their business operation.In Sweden there is a big difference between different businesses when it comes to their Corporate Social Responsibility.
Stormskador i lärk och gran : en jämförelse efter stormen Gudrun
The storm Gudrun January 8-9 2005 felled about 70 millions cubic metres forest in southern Sweden. The majority of the wind damaged forest was spruce (Picea abies). In order to decrease the risk of wind damages in the future other trees species are of interest for forestry in southern Sweden.
The purpose of this master thesis was to study if larch were more wind tolerant than spruce. The method was to compare larch, Japanese larch (Larix kaempferi Lamb.), European larch (L.
Barley starch, structure and properties
Starch is a naturally occurring substance in most plants and is used as energy storage. It is a component that mainly consists of amylose and amylopectin. Together they build a complex pattern which gives starch its specific properties. The proportion of amylose and amylopectin varies in different plants but generally starch consists of 25 % amylose and 75 % amylopectin. There have been discoveries of barley varieties containing 100 % amylopectin called ?waxy starches? or ?waxy barley? as well as varieties that have a high content of amylose, around 70 % and these are called ?amylotypes?.
Bubblor och kapitalstruktur : Förändringar i kapitalstruktur i samband med bubbelsituationer.
Financial bubbles are characterized by a large increase in the economic growth on the market as a whole or in specific industries. The change gives rise to an increase in the capital needed to finance this growth. Companies typically have a choice between equity and debt capital to finance its business and the mix of these types of capital is often referred to as the company?s capital structure. There has been a lot of research done in the field of financial bubbles and ofcapital structure, as of yet no studies seem to address these two areas in combination.The aim of this study is to examine if financial bubbles affect a company?s capital structure and through this also examine if the supposed changes in capital structure can be generalized.The study comprise of two identical time-series which examines the changes in leverage and the choice of financing during the Swedish real estate bubble in the early nineties and the IT-crash at the end of the 2000th century.
Förbättrar en kvalitetssäkring skördarens dimensionsmätning?
In this study it was investigated if the adoption of a new routine for quality control could improve the precision of the dimension measurement obtained by harvesters. Data was collected from three different harvesters. First, a reference data set was collected before the new procedures had been incorporated, and then when the new methodology was implemented another data set was collected by the harvester operators, allowing the two data set to be compered.
The results indicated that following the implementation of the new procedures, the reliability and the precision of the measurements has increased. All harvesters included in the study had improved regarding most of the controlled factors such as standard deviation, systematic difference and hit rate within ± 2 cm for length and ± 4 mm for diameter..
Dog bite incidence and associated risk factors : a cross-sectional study on school children in Tamil Nadu
Dog bites pose a threat to public health globally and can lead to infection, disfigurement, incapacity, post-traumatic stress syndrome and even death. In geographical areas where rabies is endemic, bites from infected dogs account for over 90% of the human rabies cases.
Children have been proven to be at a greater risk of being bitten by dogs and subsequently contracting rabies than adults. In this cross-sectional study, a school survey was undertaken in association with a rabies awareness campaign in India, to investigate the dog bite incidence and various risk factors associated with dog bites as well as assessing the knowledge of safe interaction with dogs among children in the age group 10-18 years. A total of 1295
questionnaires were collected. 43.2 % (n=556) out of the respondents were boys and 56.8 % (n=731) were girls with a mean age of 14 years.
Positionsbestämning av radiosändare med kägelsnittsmetoden.
Vid Positionsbestämning av radiosändare med TDOA(Time Difference Of Arrival) är det traditionella sättet att låta varje uppmätt tidsskillnad definiera en hyperbelgren på vilken sändaren befinner sig. Skärningspunkten mellan två eller fler hyperbelgrenar ger sändarens position.Målet med examensarbetet är att identifiera möjliga sändarpositioner och detektera mångtydigheter. Problemet har lösts med kägelsnittsmetoden som låter tre mottagares positioner och deras uppmätta tidsskillnader definiera ett kägelsnitt där sändarens position är i en av dess fokuspunkter..
Levande vikt vid olika åldrar och sambandet med bröstomfång och mankhöjd hos SRB och SLB :
Live-weight at different ages for Swedish Holsteins (SLB) and for the Swedish Red and White Breed (SRB), and the correlation to heart girth and height at withers.
The aim of this investigation was to study the live-weight changes and mature weight for the Swedish Red and White Breed (SRB) and for Swedish Holsteins (SLB), and to estimate the correlations between body weight and body measurements such as heart girth and height at withers, respectively. The material used was from one of the experimental dairy herds (Jälla) of the Swedish University of Agricultural Science. It included recordings on 293 dairy cows with information from 7142 weight occasions and recordings on 275 dairy cows with information of 557 heart girth measurements and 560 measurements of height at withers. The registrations were done during 1993-2002.
There was a large variation in live weight between cows in different ages and lactation stages.
Intressenter och deras påverkan på internationella bolag i korruptionsfrågor : En fallstudie av Westinghouse Nuclear
AbstractTitle: Similar but different ? Sweden Democrats and Swedish Social Democratic Party in Swedish newspapers online during 2010 (Lika men olika ? Sverigedemokraterna och Socialdemokraterna i svensk rikspress på nätet 2010).Number of pages: 35 (40 including enclosures)Author: Magnus MjöhagenTutor: Amelie HössjerCourse: Media and Communication studies CPeriod: Autumn 2010University: Division of Media and Communication, Department of Information and Media, Uppsala UniversityPurpose/aim: To discover any possible difference between the media report concerning The Sweden Democrats and the Swedish Social Democratic Party in Swedish news press.Material/method: A quantitative content analysis has been made with 64 articles from the homepages of the four biggest news papers in Sweden: Aftonbladet.se, Expressen.se, DN.se (Dagens Nyheter) and SvD.se (Svenska Dagbladet). The analysis focused on four themes: 1) framing in the articles, 2) impersonation in the articles, 3) the democratic task of journalism and 4) the expectations of journalism in an election campaign.Main results: The main results showed that the difference between the two parties either was nonexistent or very small. The articles were sometimes framed in specific ways, but a big amount of the articles were not framed. Impersonation occurred in about half of the cases, concerning both parties.
Bubblor och kapitalstruktur : Förändringar i kapitalstruktur i samband med bubbelsituationer.
Financial bubbles are characterized by a large increase in the economic growth on the market as a whole or in specific industries. The change gives rise to an increase in the capital needed to finance this growth. Companies typically have a choice between equity and debt capital to finance its business and the mix of these types of capital is often referred to as the company?s capital structure. There has been a lot of research done in the field of financial bubbles and ofcapital structure, as of yet no studies seem to address these two areas in combination.The aim of this study is to examine if financial bubbles affect a company?s capital structure and through this also examine if the supposed changes in capital structure can be generalized.The study comprise of two identical time-series which examines the changes in leverage and the choice of financing during the Swedish real estate bubble in the early nineties and the IT-crash at the end of the 2000th century.
Effekten av metyljasmonat som skydd mot gnag av snytbagge (Hylobius abietis) på gran- och tallplantor :
The effect of methyl jasmonate on resistance against the large pine weevil (Hylobius abietis) in Scots pine and Norway spruce seedlings.
A field experiment was conducted in order to determine the dose-response effects of methyl jasmonate (MJ) on growth and defence to pine weevils in Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) and to compare the effect of MJ between pine and spruce.
In addition a complementary greenhouse experiment was conducted with the same aims as above and to determine the amount of resin ducts and their correlation to the feeding of pine weevils.
The field experiment was conducted on a fresh clear cutting in Garpenberg, southern Dalarna in central Sweden. The experiment consisted of 30 blocks with three kinds of containerized seedlings: 2-year old spruce, small pine (before shoot elongation) and 1-year old pine (already shoot elongated). They were all exposed to 4 treatments 14 days prior to the experiment: control, 25 mM/L MJ, 50 mM/L MJ and 100 mM/L MJ. Data on weevil damage and seedling growth were collected after the first and the second growing season.
The seedlings in the greenhouse experiment were of the same kind and were exposed to the same treatment as the ones in the field experiment.