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309 Uppsatser om Alpha estimation - Sida 3 av 21
Erfarenheter från programutveckling åt externkund
Denna rapport handlar om projektgruppens samlade erfarenheter om hur det är att arbetamed ett större mjukvaruprojekt. Fokus för detta ligger på erfarenheter inom gruppdynamikoch kundinteraktion. Rapporten lyfter även fram hur användandet av Essence Kernel Alpha:spåverkade gruppens arbete. Rapporten försöker också undersöka och ge förslag påfinansieringsmodeller för projekt med öppen källkod. Det som iakttogs var att planering ochöppen kommunikation i stor del påverkar ett projekts utveckling.
Matting of Natural Image Sequences using Bayesian Statistics
The problem of separating a non-rectangular foreground image from a background image is a classical problem in image processing and analysis, known as matting or keying. A common example is a film frame where an actor is extracted from the background to later be placed on a different background. Compositing of these objects against a new background is one of the most common operations in the creation of visual effects. When the original background is of non-constant color the matting becomes an under determined problem, for which a unique solution cannot be found. This thesis describes a framework for computing mattes from images with backgrounds of non-constant color, using Bayesian statistics.
Validering av Alberta Context Tool (ACT) för bruk inom svensk kommunal äldrevård : Ett verktyg för implementering av evidensbaserad vård
The aim of this study was to conduct an instrument test of the Canadian questionnaire Alberta Context Tool (ACT) version Long-Term care for Swedish conditions. ACT is designed in order to measure the context in the care environment and different behaviours related to the changes in clinical practice. In total, 159 Licensed Practical Nurses (LPNs) and Registered Nurses (RNs) within municipality care of the elderly were included in the survey. The test included the instrument's reliability and face validity.The reliability test was implemented through calculation of Cronbach´s Alpha, and showed internal consistency for five of the scales of the ACT-instrument with Cronbach´s Alpha values ranging between 0,728 and 0,873. However, three dimensions got lower values (0,558 - 0,683).The analysis was carried out with content analysis and carried out for LPNs and RNs in separate groups.
Värdering av prestation och riskbeteende i ung ålder : Finns det ett samband?
This paper is a study how students at a high school in Falun, Sweden, estimates theirperformance in an upcoming math test which is then compared with the actual grade thestudent performed. The students who participated also answered questions related to ?risksituations? to examine whether there is a correlation between how students estimate theirperformance in the context and their risk behavior, and if the students act like economicmodels assume. In agreement with previous studies, the boys in the survey tended to beoverconfident in their performance. The girls in the study were neither over- norunderconfident in her performance and no significant difference in the estimation of one'sperformance between the sexes could be proven.
Översättning och validering av pVHI : för barn 6 till 10 år
Studies indicate that between 6-9% of all children has some type of voice problems. Voice problems in children may have different etiology and can affect all ages. In Sweden, there is a lack of a standardized questionnaire addressed to children with voice problems and their legal guardians. The purpose of this study was to translate and validate the Pediatric Voice Handicap Index (pVHI) in Swedish children aged 6 to 10 years. The study was carried out through an internet-based assessment form for children referred to speech and language pathologist/ phoniatrican due to voice disorders in Sweden and a matched control group of children without voice problems.
Heuristisk profilbaserad optimering av instruktionscache i en online Just-In-Time kompilator
This master?s thesis examines the possibility to heuristically optimise instruction cache performance in a Just-In-Time (JIT) compiler. Programs that do not fit inside the cache all at once may suffer from cache misses as a result of frequently executed code segments competing for the same cache lines. A new heuristic algorithm LHCPA was created to place frequently executed code segments to avoid cache conflicts between them, reducing the overall cache misses and reducing the performance bottlenecks. Set-associative caches are taken into consideration and not only direct mapped caches.
AKTIV FÖRVALTNING : En undersökning av fonders riskjusterade avkastning, persistens i fonders prestationer och sambandet mellan graden av aktiv förvaltning och fondernas överavkastning
I dagens premiepensionssystem finns det två typer av aktiefonder, dels indexfonder och dels aktivt förvaltade fonder. Denna studie undersöker om aktivt förvaltade Sverigefonder och tillväxtmarknadsfonder lyckas uppnå en högre riskjusterad avkastning än valt jämförelseindex, om de aktivt förvaltade fonderna uppvisar persistens i sina prestationer och om det föreligger ett samband mellan graden av aktiv förvaltning och fondernas riskjusterade avkastning. Studien undersöker 38 Sverigefonder och 43 tillväxtmarknadsfonder under åren 2007-2013. Som mått på den riskjusterade avkastningen används i denna studie Jensens alpha, Sharpe-kvot och Treynor-kvot. För att undersöka persistensen har två olika varianter av contingency tables använts för att mäta persistensen både på kort och lång sikt.
Bostadssektorns koldioxidutsläpp
Energy is an important issue in the current world which significantly affects sustainability and development. Energy generation and use are major sources of CO2 emissions which is one of the most important driving factors in global climate changes. The amount of energy used in house hold section can lead to estimation of the amount of CO2 emitted within this section which subsequently would be a ground to better management and maintaining a sustainable society. This study which is a bachelor?s project in sustainable energy, deals with estimation of CO2 emission from different types of residential houses in Sweden. An extensive literature review on energy use in Sweden by different residential sectors has been conducted.
Är riskjusterad fondavkastning en funktion av fondförvaltarens bakgrund och egenskaper?
Avkastning och risk för en aktiefond styrs generellt av flera direkta och indirekta mekanismer, exempelvis relaterade till nationella makroekonomiska faktorer såsom ränteförändring och inflation. Utöver makroekonomiska faktorer finns indirekt mikroekonomisk påverkan, exempelvis relaterad till riskaversion, preferenser och irrationellt beteende hos individen. Därtill påverkas aktiefondernas avkastning och risk av övergripande internationella konjunkturcykler, inkluderande internationell makroekonomi.Studien som här presenteras fokuserar på att undersöka och kvantifiera hur bakgrund och egenskaper hos fondförvaltare systematiskt påverkar avkastning och riskexponering för 42 aktivt förvaltade svenska aktiefonder. Undersökningen inkluderar utbildningsnivå, kön, ålder och erfarenhet hos ansvarig fondförvaltare som förklarande variabler, samt avkastning, risk och riskjusterad avkastning som beroende variabler. Studien använder Sharpekvot, Treynorkvot och Jensens alpha som värderingskvoter för att åskådliggöra riskjusterad avkastning över tid.
Gäddan & fisket i Ringsjöholm : en osteologisk metodstudie i säsong & bevarande
This paper presents the results from an osteological method study of the Ringsjöholm fishbone material. Ringsjöholm is located in Scania, southern Sweden and is 14C dated to 5960-5200 B.P. The aim of this paper is to critically analyse methods used on fish bone material in estimations of season. Three different approaches were used to estimate the fishing season at the Ringsjöholm settlement; 1) identified species, 2) size estimations of the pike based on Enghoffs (1994-95) regression formulae of os dentale, and 3) growth rings of the pike vertebrae.The identified species and the size estimations of the pike points to the fishing being active both during spring and summer. Growth rings analysis of the pike vertebrae didn?t give any quantitative results because of fragmentation.
Öppenhet och kostnad för eget kapital: En studie på den svenska marknaden
Previous research has discussed how voluntary disclosure relates to the cost of equity capital. Theories of estimation risk support a negative association between disclosure and cost of equity capital, as empirically documented by Botosan (1997) among others. In this Bachelor thesis we investigate whether such a relationship exists on the Swedish capital market. Using the CAPM to estimate the cost of equity capital and a disclosure index based on Aktiespararen?s annual evaluation of corporate disclosure, we test a model where disclosure explains cost of equity capital.
Konsonant- och vokalduration i enaresamiska
SEB Merchant Banking provides to its institutional customers a true market neutral product called Dynamic Manager Alpha (DMA). The DMA is constructed by a long position in an exceptionally well performing mutual fund and a beta adjusted short position in an appropriate index. The key to making the product market neutral is adjusting with the correct beta, since the beta changes, it is very important to have a good model for predicting beta in the future.This master thesis begins with describing what beta is in a CAPM sense. It then continues with recognizing the so called ?Two Beta Trap?, which separates two kinds of beta.
Isometrier i Poincarés halvplansmodell
SEB Merchant Banking provides to its institutional customers a true market neutral product called Dynamic Manager Alpha (DMA). The DMA is constructed by a long position in an exceptionally well performing mutual fund and a beta adjusted short position in an appropriate index. The key to making the product market neutral is adjusting with the correct beta, since the beta changes, it is very important to have a good model for predicting beta in the future.This master thesis begins with describing what beta is in a CAPM sense. It then continues with recognizing the so called ?Two Beta Trap?, which separates two kinds of beta.
Vårdpersonalens skattning av strukturell empowerment och arbetstillfredsställelse samt reliabilitetstestning av instrumentet CWEQ.???
Tidigare studier har visat att bristen på strukturell empowerment på vårdavdelning ofta leder till försämrad personalhälsa, sämre arbetsmiljö och mindre samarbete med kollegor samt högre grad av utmattningssymtom. Syftet med studien var att beskriva vårdpersonalens upplevelse av strukturell empowerment vid en akut kirurg- och ortopedavdelning, samt att undersöka om det finns några skillnader mellan sjuksköterskors och undersköterskors skattning av strukturell empowerment. Ytterligare ett syfte var att beskriva vårdpersonalens upplevelse av arbetstillfredsställelse samt att reliabilitetstesta ett instrument som mäter strukturell empowerment. Data gällande strukturell empowerment samlades in med instrumentet Condition of Work Effectiveness Questionnaire (CWEQ och CWEQ II) och data gällande arbetstillfredsställelse samlades in med en studiespecifik fråga. Femtioen enkäter delades ut, 43 personer svarade vid första mätningen och 39 personer vid andra mätningen.
Prediktion av beta för fonder
SEB Merchant Banking provides to its institutional customers a true market neutral product called Dynamic Manager Alpha (DMA). The DMA is constructed by a long position in an exceptionally well performing mutual fund and a beta adjusted short position in an appropriate index. The key to making the product market neutral is adjusting with the correct beta, since the beta changes, it is very important to have a good model for predicting beta in the future.This master thesis begins with describing what beta is in a CAPM sense. It then continues with recognizing the so called ?Two Beta Trap?, which separates two kinds of beta.