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735 Uppsatser om Piecewise linear regression - Sida 31 av 49

Solar energy on Swedish pig farms : a sunny story?

In Sweden there is a large interest in renewable energy but the market for solar power is still small compared to other countries such as Germany. Here many farmers produce their own electricity. The Federation of Swedish farmers have acknowledged the potential for Swedish farmer to produce electricity and there is an interest among the farmers. The agricultural branches in Sweden most suitable for solar power are pig production and poultry due to the even electricity need throughout a year. Swedish pig farmers are going through a period of unsteady profitability which makes it interesting to see whether producing their own electricity can affect the economic situation.

Optimal kapitalstruktur : En undersökning tillämpad på skandinaviska och tyska företag

This paper describes and develops a trade off model of optimal capital structure by Bradley et al. (1984). The model is then tested to examine how changes in corporate tax rates affect the optimal capital structure of firms. Based on theoretical implications of the model, four hypotheses are derived stating that firms? optimal debt-to-value ratio is (1) negatively related to financial distress costs, (2) negatively related to non-debt tax shields, (3) negatively related to firm volatility and (4) positively related to the corporate tax rate.

Initial evaluation of the Meritas Troponin I test for measurement of equine cardiac troponin I

Cardiac troponin I (cTnI) is considered a specific and a sensitive biomarker of cardiac disease, and due to a high inter-species sequence homology; human cTnI assays can often be used in veterinary medicine. The main aim of this study was to perform an initial evaluation of a human cTnI test, the Meritas Troponin I test, for measurement of equine plasma cTnI, in order to investigate whether the test could be a possible subject for a more comprehensive validation. The hypothesis was that the test could measure equine cTnI, as there is a good homology between equine cTnI and human cTnI. The evaluation included a dilution parallelism, an intra-assay precision study and measurement of plasma cTnI healthy horses. In the dilution parallelism and the intra-assay precision study, equine plasma with previously established high cTnI concentration, according to another cTnI assay, was used. In addition, cTnI concentration was measured in plasma, collected from 19 horses, without signs of disease at physical and ECG examinations. The obtained curve in the dilution parallelism was linear, indicating that the Meritas Troponin I test can be used to measure different concentrations of equine cTnI in plasma.

Är chefen verkligen jämlik och vad får det för effekter på commitment?

Teorin om Leader- Member Exchange antar att en chef differentierar mellan olika anställda i arbetsgruppen, vilket därav kan kännas av i arbetsplatsomgivningen. Ett högt utbytesförhållande med chefen har visat sig få betydande konsekvenser inom en organisation. Utifrån det kan det vara viktigt att chefen upplevs som jämlik. Denna studie undersökte hur chefen brukar differentiera förhållningssätt gentemot olika anställda samt om chefen uppfattas som jämlik, detta för att utröna vilken påverkan det har på commitment till organisationen, och till arbetsgruppen. Beroende på om avdelningscheferna skiljer sig åt beträffande uppfattad jämlikhet undersöktes om anställdas commitment skiljer sig åt mellan avdelningarna.

Personlighets och självkänslas samband med psykisk ohälsa hos studenter vid Lunds universitet

The purpose of this study is to examine whether personality traits, self-esteem, performance-based self-esteem and demographic data relate to, and can explain the variation in psychological ill-health among students at Lund University. A questionnaire was distributed to students attending the Psychology program, Bio-technology program, Theologian program and Law program. There were 247 respondents to the questionnaire, mainly attending their second or third semester. General Health Questionnaire (GHQ-12), Rosenberg's Self- Esteem scale, Hallstens scale measuring performance-based self-esteem, questions relating to demographic data and a short version of the personality inventory scale Big Five were included in the questionnaire. Positive correlations were found between psychological ill-health and the variables neuroticism and performance-based self-esteem.

Spatiella mönster och lager av organiskt klor och klorid i barrskogsjord i sydöstra Sverige

The concentration and storage of organic chlorine and chloride were determined in soil, to a depth of 40 cm, in a coniferous forest in the Stubbetorp catchment area in south-east Sweden. Also, the spatial distribution of the two forms of chlorine was determined. Soil samples were collected at 49 of the nodes in a grid with approximately 105 m between the nodes. The analysis of spatial variability suggested that no spatial autocorrelation was present either within the variable organic chlorine or chloride. This means that no sample was more influenced by another nearby sample, as compared to other samples further away.

Socialt stöd och copings modererande effekt på sambandet mellan stress och ohälsa

Stress i arbetslivet anses ligga till grund för en del av det stora antalet långtidssjukskrivningar. Arbetet att få tillbaka fler i arbete är viktigt men också förebyggande åtgärder för att förhindra fler sjukskrivningar. I denna studie undersöktes socialt stöd och copings modererande effekt på sambandet mellan arbetskrav och ohälsa. Urvalet bestod av lärare (n=443, svarsfrekvens 72 % Tid 1, n=340 Tid 2, longitudinell svarsfrekvens 78 %). Stegvis Multipel regression genomfördes för variablerna arbetsbelastning, måloklarhet, socialt stöd från kollegor och chefer, coping med hänsyn till kontrollvariablerna ålder och kön.

Analys, design och konstruktion av en ITS-prototyp : Att övervaka och informera transporter av farligt gods på väg

The Swine flu (H1N1) erupted in 2009 and wasquickly spread over the world and developed into a pandemic, with a great threat against people?s health. It was soon discovered that the H1N1?virus had a different character than the seasonal flu, since it especially affected younger individuals and the consequences from the disease were expected to be more severe. In Sweden it was decided to provide a free of charge vaccination against the H1N1-virus, and the Swedish vaccination ratiobecome relatively high compared to other countries.

Tidsperspektiv som prediktor för individuella skillnader i upplevd stress : En tvärsnittsstudie av äldre vuxna

Time Perspective is related to mental and physical health. This study examines the relationship between Time Perspective and perceived stress where Time Perspective was expected to predict the level of perceived stress. Past-negative, Future-negative, Future-positive and present-fatalistic were expected to be positively associated with perceived stress while Past-positive and present-hedonistic were expected to be negatively associated. Measures from the self-assessment forms S-ZTPI, PSQ-recent and CES-D from 445 participants (242 women, 203 men) between 60-90 years were used to examine the hypothesis of the study. Two hierarchical multiple regression analysis confirmed that Time Perspective is associated with perceived stress and in part 2 explains it's variance, one when adjusting for demographic data (.R = .37) and the 2 other when adjusting for demographic data and depressive symptoms (.R = .13).

Kreativiteten i Humor : Domängenerella Mätningar av ett Domänspecifikt Område

The aim was to examine whether measurements of creativity as a domain general trait can explain possible connections between a domain general creative performance and one of the creative domain specific areas, humor. Another aim was to examine whether the maladaptive humor styles can explain possible differences in creative performances. An Internet-based survey was used on 281 students from a Swedish university. The survey was composed of three parts consisting of three separate measuring instruments ? Sense of Humor Questionnaire (SHQ-6) was used to measure the respondents? sense of humor, Humor Style Questionnaire (HSQ) measured the respondents? humor style and Alternate Uses Test (AUT) gave the respondents an opportunity to account for their creative performances.

De blir fria i tanken : En kvalitativ studie om pedagogers tankar om pedagogisk dokumentation

This MA thesis analyzes how the protagonists and the narrative structure relates to ?the Child? as a linguistic/cultural construction in Mare Kandre?s early authorship (1984-1991). A thematic of children portraits defines this period of Kandre?s writing, which consits of the following works: In a Different Country (1984), The Annunciation (1986), Bübin?s Kid (1987), The Burning Tree (1988) and Aliide, Aliide (1991).Linguistic components, such as the word ?child?, the name ?Kid? and a reconstruction of the concept of childhood, holds an actuate position in these narratives when they first appear in direct relation to the protagonists. This suggests how generally accepted categories and concepts consciously are at work in Kandre?s writings.

Viktiga faktorer för utländska direktinvesteringar i Sub-Sahara : en tvärsnittanalys

FDI har sedan början på 80-talet växt sig allt större och blivit en av de viktigaste tillgångarna till finansiellt och fysiskt kapital i världen. FDI har enligt många studier en viktig funktion för ett lands ekonomiska utveckling, detta gäller främst för outvecklade länder men också utvecklade länder. Studiens mål var att hitta viktiga faktorer som påverkade FDI inflöde till Sub-Sahara regionen. Den empiriska analysen gjordes med hjälp av en OLS regressionsmodell och hade 42 observationer sammanlagt. Huvudvariabeln var FDI/BNP.

?Vi och dom? - inhyrda konsulter och ordinarie personal inom bemanningsbranschen

Syftet med uppsatsen var att behandla förhållandet mellan inhyrda konsulter och ordinarie personal. Förhållandet avsåg att mäta skillnaderna mellan dessa två anställningsformer i förtroende för de inhyrda. Målet var sedan att se om förtroendet kunde förklaras med hjälp utav upplevelsen av tillhörighet eller upplevelsen av hot. Undersökningen utfördes med en kvantitativ ansats och resultatet togs fram med hjälp av SPSS, genom en linjär regression som gjordes på sekundärdata gjord av en samling forskare på Mittuniversitetets samhällsinstitution. Urvalet bestod av 137 svarande på en enkät som skickats till sammanlagt 237 personer, vilket gav en svarsfrekvens på 50,2%.

Måltider inom äldreomsorgen : Det är inte bara maten som är viktig

Den svenska bostadsmarknaden har under en längre tid varit ett hett diskussionsämne i media. Regelbundet beskrivs den svenska bostadsmarknaden som övervärderad. Ovissheten kring var marknaden befinner sig värderingsmässigt, väcker intresse att undersöka hur en bostadsrätts olika egenskaper påverkar dess värde, alltså vad individer är beredda att betala för i en bostadsrätt.?Hur mycket är konsumenten villig att betala för olika egenskaper hos en bostadsrätt, så som: boarea, våningsplan, hiss och antal rum??I studien utförs en empirisk tvärsnittsanalys, med observationer insamlade från och med första augusti till och med sista oktober 2014. Bostadsrätterna som är inkluderade i studien är geografiskt belägna i Stockholms innerstad (Kungsholmen, Norrmalm, Södermalm, Vasastan samt Östermalm).

Effektivisering av urvalsprocesser vid analysering av björnspillning : Ett förslag till den svenska förvaltningen av brunbjörn Ursus arctos

The aim with this report is to formulate a strategic method to optimize selection processes of DNA-samples from a faeces inventory to identify as many individuals in as few analyzes as possible, and by that keep down the costs of brown bear management. Brown bear management in Sweden founds today on results from faeces inventory and is substantially led by the county administration boards. Data from the years of 2004 and 2009´s inventories in Västerbotten was used to test and evaluate different methods in selection processes of which faeces that should be sampled. Comparison were made between making selection by chance, by spatial distribution and by calculating variations in logistic regressions coefficient b, in other words bear density and probability in finding same individual in several faeces. We can show making selection by chance is the most uncertain method.

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