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735 Uppsatser om Piecewise linear regression - Sida 25 av 49
Frihet från ansvar : Professionellas kunskaper om sexuella riskbeteenden vid HIV-infektion utomlands
Theories about exposure and risk-taking in an everyday environment show a connection between parental strategies, parent-child relationship and exposure on the Internet. In the present study, the Internet is presented as an everyday activity. Negative exposure is seen as an outcome of risk-taking. The purpose of the study was to examine in what way parental strategies together with the parent-child relationship were related to the teenagers? negative experiences on the Internet, which consisted of three categories: 1) Exposure to pornographic sites, 2) Exposure to upsetting and violent material, 3) Digital bullying.
Bryggor - En studie av bryggors förekomst i publika bolag och påverkan på träffsäkerhet i analytikerestimat av EPS
Previous studies have shown that there is a relationship between voluntary disclosure and analysts' forecast accuracy. However, there has been no research conducted specifically on bridges. Bridges contain information on how components such as price, volume, foreign exchange rates and acquisitions have impacted the financial performance between two periods. The main purpose of this thesis is to investigate the usage of bridges in quarterly financial information of companies listed on Nasdaq Stockholm. We provide a descriptive mapping of bridges and find that 30 out of 268 companies are presenting bridges as a part of their voluntary disclosures, with large firms being the most frequent users.
Allokering av kapitalinkomst - en effekt av århundradets skattereform
The aim of this paper is to study intra household allocation of capital income by using data on Swedish observations. The 1991 tax reform was to change the taxation on capital income from a progressive to a flat tax system. Before the tax reform there were incentives to allocate capital income to the spouses with the lowest income of labor in order to reduce the total tax burden. The data describes the year of 1989 and 1993, those we choose to examine. Using Swedish data from LINDA database we estimate a quotient by ordinary least squares (OLS) regression.
Konstruktion av anordning för att undersöka förslitning av syrebärarpartiklar för kemcyklisk förbränning
The purpose of this work is to design and construct a device able to measure the mechanical attrition of oxygen carrier particles. Those particles are used in chemical looping combustion and in the present situation there is a lack of knowledge in how the attrition process work and in which extension. To find already tested solutions trying to answering this problem a literature study wascarried out and the best solution found was the so called Grace-Davison Jet-Cup method. This method is supposed to emulate the attrition caused by a cyclone separator and its advantages are that it is possible to use small test amounts, 5-10 g, and a thirty minutes long test will be enough to acquire useable results. An device was designed based on the Jet-Cup method with some slight modifications.
Påverkad strukturerad produktion produktiviteten? : Analys av mätningar från byggbranschen
The cost of construction projects have increased during the past few years. Different actors in the construction industry work together to advocate various measures to mitigate these cost increases. One of these measures is to try to improve the efficiency in the phase of production. By striving for a kind of standardization with a constant quest for improvement, the productivity can increase while the costs of production fall.For this thesis has a case study been conducted at the construction company JM AB which is seeking this. They call the approach structured production and have implemented various measures to achieve a more productive output.Based on information from reconciliations, the cost and the spent hours of craftsmen have been analyzed at the company where the case study took place.
Färdvägsmiljöer vid cykling för transport : En studie av en modell om uppfattningar av färdvägsmiljön hos cyklister
SummaryAimThe study examines a theoretical model developed to capture cyclist´s perceptions of the route environment. The survey focuses on if level two and three in the theoretical model captures what it´s intended to do. More specific we ask ourselves how the three appraisals (unsafe/safe by traffic reasons, stimulating/inhibiting route environment, unsafe/safe by other reasons) in the model´s second level relates among themselves and if these three appraisals can capture the degree of environmental well-being/unwell-being in the model´s third level. The questions were: Do the three appraisals differ among themselves? What is the difference/-s in such cases? And, is there a correlation between any of the three appraisals and environmental unwell-being/well-being? What is the correlation in such case? MethodThe gathering of data was done through questionnaires.
Relationen mellan prestationer och ersättning
The thesis handles the principal-agency problem between shareholders and the Chief Executive Officer. The purpose of the thesis was to examine the link between CEO compensation and corporate performance measured as a change in Market to Book ratio. Data was collected from corporate annual reports between the years 2000 ? 2008 and the study covers 39 Swedish companies from the Stockholm Stock Exchange Large Cap list. To examine whether there is a link between the CEO´s compensation and firm performance, we performed a regression analysis, and no significant relation is found.
Den livsmedelshygieniska kvaliteten hos franska opastöriserade dessertostar :
This study was performed to investigate the bacteriological quality of French cheeses made from raw milk. Fifty cheeses of this type were purchased from Swedish retail premises. The methods described by the Nordic Committee on Food Analysis (NMKL) were used to determine the number of Enterobacteriaceae, presumptive Escherichia coli, coagulase positive staphylococci and Listeria monocytogenes. In 32 cheeses (64%) the number of bacteria mentioned above exceeded the determined maximum value. Thirty samples (60%) showed high counts of Enterobacteriaceae.
Bo?r man ra?kna med en fo?delsedagseffekt? : En studie om sambandet mellan elevers fo?delsema?nad och slutbetyg i a?rskurs nio inom a?mnet matematik, samt en underso?kning om pa?verkansfaktorer inom a?mnet.
The aim of this study was to examine if there was a relative age effect in students grade in mathematics. The study was built on regression analysis and Spearman rho on student?s month of birth and their grades. It was found that there is a relative age effect in the student?s grades.
Hur skapas jämställda attityder? : Effekten av egen utbildning, föräldrars utbildning och föräldrars hushållsfördelning.
I denna undersökning undersöker vi hur individers utbildning samt föräldrars utbildning och beteende påverkar individers jämställdhetsattityder. Vi använder oss av data från 2009 innehållandes 1325 respondenter födda mellan 1964 och 1980. Analysen utfördes med logistisk regression där vi studerar två olika typer av jämställdhetsattityder, allmänna jämställdhetsattityder och jämställdhetsattityder inom den privata sfären. Vår teoretiska ansats är teorin om socialisation samt kognitiv utvecklingsteori. Vi har funnit att en hög utbildning är associerat med mer positiva jämställdhetsattityder.
Evaluating the effects of a tax increase : how the Swedish demand for snus will react to the new tax increase proposed by the government
This thesis deals with the concept of how price affects demand for a good by estimating various price elasticities of demand for snu sold in Sweden. Information was gathered on price development for snus and cigarettes as well as sales data from Swedish Match, the largest supplier of snus in Sweden. Income-, price- and cross-price elasticities were estimated based on log-log regression. Results show that snus is an inelastic good since the coefficient for price of snus was -0.536. This proved that a 1% increase in price causes a 0.536% decrease in quantity demanded.
Nyttomaximering i den svenska fondbranschen
En kvantitativ studie av incitament och avkastning på 338 aktie- och 33 hedgefonder med säte i Sverige genom att variablerna fondförmögenhet, antal fonder i fondbolaget, prestationsbaserad avgift samt prestationsbaserad lön testas mot avkastning och risk. Vi finner att en större fondförmögenhet leder till lägre avkastning, fler fonder i fondbolaget resulterar även det i lägre avkastning för fonden än för motsvarande i ett fondbolag med färre antal fonder. Vår variabel prestationsbaserad lön resulterar i lägre risk för fonden och vår variabel prestationsbaserad avgift resulterar i högre risk. Vi kan inte utifrån våra resultat fastslå att agentteorins antaganden om incitament och kontroll i svenska fonder har en avgörande roll. Däremot hittar vi effekter vilka sannolikt har sin förklaring i agentteorin men då de inte är entydiga går det inte att generalisera sambandet..
Hur påverkar föräldrars beteenden i nyckelsituationer depressiva känslor hos ungdomar, i jämförelse med allmänna uppfostransstilar?
Är sambandet mellan ungdomars depressiva känslor och föräldrars beteenden i nyckelsituationer större än sambandet mellan depressiva känslor och allmänna uppfostransstilar? Detta har vi undersökt genom att låta 108 högstadieelever fylla i en enkät och sedan analysera deras svar genom hierarkisk regression. Tidigare forskning har påvisat att positiva beteenden är viktiga när det gäller föräldrars uppfostran och depressiva känslor hos ungdomar. Uppvisandet av positiva beteenden verkar dock inte likaviktiga som avsaknaden av dem. Vi har i vår studie gått ännu ett steg längre och våra resultat visar på att hur föräldrar beter sig i nyckelsituationer har större betydelse för depressiva känslor hos ungdomar än vad allmänna uppfostransstilar har.
Kapitalstrukturens inverkan på Earnings Management i svenska börsföretag
Syftet med examensarbetet är att tillföra ny kunskap inom den svenska earnings management forskningen genom att undersöka kapitalstrukturens eventuella korrelation med earnings management. Uppsatsen har en kvantitativ metodansats, paneldata regressionsanalys används för att genomföra studien. Arbetet grundar sig i tidigare forskning på earnings management området. Vidare prövas Debt-to-Equity teorin mot den svenska marknaden. Den empiriska undersökningen utgår från 231 företag listade på den svenska börsen under tidsperioden 2003-2007 och en negativ korrelation konstateras mellan earnings management och kapitalstruktur.
DCF-modellering vid multipelvärdering: En empirisk studie av hybrida värderingsmodellers prediktionsförmåga
Today, there are a number of different models and methods used to estimate the equity value of a company. A common tool for valuating stock prices is the usage of different multiples. This is a method used to determine the value of a company, by examining and comparing the financial ratios of relevant peer groups. The disadvantage with this method is that it does not take all the important aspects, such as risk, investments and capital structure, into consideration. However, this study investigates if the key value, called discounted cash flow (DCF), can be integrated with the valuation of the multiples.