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9213 Uppsatser om Regression Analysis - Sida 15 av 615
Analys av en metod för att extrahera generella regler från multipla nät
Rapporten som följer är en analys av en metod som genererar regler från neurala nätverk. Metoden heter VI-Analysis (Validity Interval Analysis) och är framtagen av Sebastian B. Thrun [Thrun]. VI-Analysis arbetar på det sättet att det neurala nätverket ses som en svart låda där endast de inputvärden och outputvärden som finns i nätverket används som underlag när regler ska genereras. Dessa inputvärden och outputvärden kommer sedan att få tillåtna intervall av VI-Analysis.
Kognition och nutritionsstatus hos äldre i Blekinge
Försämrat nutritionsstatus är ett vanligt förekommande problem hos äldre och en
av orsakerna kan vara nedsättning i den kognitiva förmågan. Ytterligare
faktorer som kan påverka försämrat nutritionsstatus är när äldre bor på
särskilt boende eller är ensamboende i eget boende. Syftet var att beskriva
samband mellan äldres kognition och nutritionsstatus i relation till ålder och
kön, med fokus på äldre som bodde på särskilt boende eller var ensamboende i
eget boende. Studien hade en kvantitativ ansats och byggde på redan insamlat
material från SNAC-B (the Swedish National study on Aging and Care i Blekinge).
Deskriptiv och analyserande statistisk användes i studien för att beskriva
materialet samt undersöka samband.
Variationer i kostnader för specialiserad sjukvård - En analys av demografi, socioekonomi och hälsans inverkan på kostnaderna för specialistvård i Västra Götalandsregionen
Abstract. Aim: The aim of this study is to determine certain health, demographic and socioeconomic factors that affect the costs for specialized health care between the municipalities within the Västra Götaland region. Method: The method is explorative and analytical. The costs for specialized health care was divided into three different subgroups; independent somatic specialized health care, specialized health care provided by private practices or outside the region and psychiatric specialized health care. The data was age-standardized.
Sitkagranens potentiella merproduktion jämfört med vanlig gran i Hallands län
Sitka spruce (Picea sitchensis) is not considered to be a native species to Swedish forests. It´s origin is the pacific coast of Northern America, an area that is dominated by a coastal climate which makes it likely to believe that it would be well suited for growing in the south-west of Sweden.
This study aims to investigate the gain in production that can be reached by growing sitka spruce instead of Norway spruce (Picea abies) in the county of Halland. A regression model based on data from forest experiments was produced to explain the gain in production. This model was based on elevation and annual precipitation.
The model was then used to create a map layer in arcGIS that shows the gain of volume in comparison to Norway spruce in percent. An analysis was carried out to find what share of the forestland in Halland county that fell into four different classes of production gain.
Att undervisa för framtiden : Gymnasielärares tolkningar av kursplanerna i ämnet Programmering
Arbetet har utforskat möjligheten och precisionen av BRP-prediktion för tre statistiska metoder; linjär regression, regressionsträd och modellträd. För modellutvärdering har testfelsskattning erhållen genom korsvalidering och en jämförelse mot Statistiska Centralbyråns (SCB) prognos av BRP används. Resultatet visar att regressionsträd inte lämpar sig för BRP-prediktion, medan de andra två lyckas med rimlig felmarginal. Procentuell avvikelse för metoden som ligger närmast SCB:s prognos har 0,3 i genomsnitt och standardavvikelse 3,0..
Utvärdering av energiberäkningsprogram : Att användas i tidigt planeringsstadium för byggnader
The regulations for energy consumption are consistently getting more and morestrict. This leads to a higher customer demand for energy analysis early in the buildingdesign process. Many building planners and architects use powerful modeling softwareto visualize their projects. These digital models contain sufficient information aboutthe building?s physical characteristics for reliable energy analysis.
Oljepriset och Investeringsbeslut
It is easy to see that oil has a big part in our economy, by looking at the repeated news from the media and at the stock market, where they follow the oil price very closely. Behavioral finance is about investors making small or big mistakes in the stock market. Behavioral finance describes the importance of understanding your own faults, as well as others investor?s faults. Behavioral finance emphases the importance of not assuming that the financial market is a flawless environment, but to understand the psychology behind investment decisions.
Kvicksilversituationen i Stockholms skärgård
Kvicksilverutsläppen har på senare år minskat i omfattning men utsläpp sker fortfarande och det finns ett stort lager i naturen. Oorganiskt kvicksilver är relativt ofarligt för levande organismer, men i akvatiska miljöer kan sulfatreducerande bakterier under syrefria förhållanden omvandla oorganiskt kvicksilver till den betydligt mer skadliga formen metylkvicksilver, meHg, som även är mer biotillgängligt än oorganiskt kvicksilver. Kvicksilver biomagnifieras uppåt i trofinivåerna, från att vara lägst halter i plankton och bottenfauna till att vara högst halter i rovfiskar. Kvicksilver ackumuleras även i fiskars muskelvävnad vilket innebär att yngre fiskar har lägre Hg-halter än gamla och stora individer. På grund av detta finns kostråd framtagna av Livsmedelsverket.
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.
Utvärtes behandling av sarkoider på häst med Aldara TM eller Xxterra TM : en jämförande pilotstudie
Sarcoid is the most common tumor in horses all over the world. The sarcoid is a benign, locally invasive, usually fibroblastic proliferative skin neoplasm. Even if the etiology is not completley verified, the epidemiology and clinical behavior suggest a infectious intervention, probably BPV type 1 or type 2. However, it is known that the cause is multifactorial. A genetic prepdispositon has been identified associated to genes within the Major Histocompatibility Complex (MHC), but also to breed, age and perhaps gender.
Utvärtes behandling av sarkoider på häst med Aldara eller Xxterra : en jämförande pilotstudie
Sarcoid is the most common tumor in horses all over the world. The sarcoid is a benign, locally invasive, usually fibroblastic proliferative skin neoplasm. Even if the etiology is not completley verified, the epidemiology and clinical behavior suggest a infectious intervention, probably BPV type 1 or type 2. However, it is known that the cause is multifactorial. A genetic prepdispositon has been identified associated to genes within the Major Histocompatibility Complex (MHC), but also to breed, age and perhaps gender.
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.
Hav och Strand : stenteknologi och marin anpassning på Gotland under Senboreal/Tidigatlantisk tid
The essay circulates around the technological analysis of flint material from four localities around the Baltic Sea basin. The analysis was created to investigate the question of where the first Gotlandic settlers originated from and to give clues about the colonization process. The investigated material was collected during the fall of 2011 and a correspondence analysis is used to analyze the collected material. The purpose of using a correspondence analysis is to test the method as a tool for investigating Mesolithic flint technologies. The essay also discusses marine hunter-gatherers, their economy and how their archeological remains differ from terrestrial hunter-gatherers..