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486 Uppsatser om Mean-variance portfolio optimization - Sida 16 av 33

O?gonblick fra?n La?rkskogsva?gen : skriftlig reflektion inom sja?lvsta?ndigt, konstna?rligt arbete

I detta examensarbete har jag tillsammans med min kollega Markus Eriksson spelat in sju musikstycken med tydligt bera?ttande funktion. Dessa sju musikstycken fungerar som filmmusik till fyra olika historier som utspelar sig i ett la?genhetshus, ett introstycke som sammanfattar hela den musikaliska ide?n, ett stycke som gestaltar gatan samt ett stycke som beskriver ka?nslan i trapphuset. Materialet utgo?r en del av min portfolio och fo?rhoppningsvis kommer detta projekt o?ka mina mo?jligheter att fa? skriva musik till ro?rlig bild i framtiden.

Föredraget ledarbeteende - en jämförelse mellan män och kvinnor, samt mellan lagidrottare och individuella idrottare

The aim of the study was to a) examine what leader behaviors individual and team athletes prefer and b) examine what leader behaviors men and women prefer. A questionnaire (The Leadership Scale for Sports) was distributed to 168 individuals, from which 130 were included in the study. The data was analyzed in SPSS, in which a three-way and a two-way variance analysis were performed. The results showed that individual athletes preferred the behavior dimensions ?Training and instruction?, ?Positive feedback? and ?Democratic behavior? to a higher degree than did team athletes.

Vi Brinner : arbetet med, och erfarenheter kring att fo?rmedla musikaliska ide?er till musiker fra?n olika traditioner i operan Vi Brinner

I detta examensarbete har jag tillsammans med min kollega Markus Eriksson spelat in sju musikstycken med tydligt bera?ttande funktion. Dessa sju musikstycken fungerar som filmmusik till fyra olika historier som utspelar sig i ett la?genhetshus, ett introstycke som sammanfattar hela den musikaliska ide?n, ett stycke som gestaltar gatan samt ett stycke som beskriver ka?nslan i trapphuset. Materialet utgo?r en del av min portfolio och fo?rhoppningsvis kommer detta projekt o?ka mina mo?jligheter att fa? skriva musik till ro?rlig bild i framtiden.

Vilka möjligheter har barn till fysisk aktivitet i fritidshem? : En intervjustudie

This study is based on a statistical analysis of fundamental key ratios on the Stockholm Stock Exchange during the period 2004-2012. In total 35 financial ratios of 90 companies were tested, ultimately five ratios remained within the 5% significance level. These ratios were ROA, P/B, Total Yield, EV/EBIT and Operating Margin. A custom made investment model was created based on the purpose to achieve a risk-adjusted excess return. The results in general did not show any significant difference in return between the model's portfolio and index.

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).

Rivna bullar och Mexikanska pannkakor

I denna uppsats har jag undersökt metoder för förvaltande av kunskap samt lärande på arbetsplatsen genom att utgå ifrån personalens expertkunskaper inom sitt arbete och hur företag kan ta tillvara dessa. Den samlade kunskapen som finns på företag är ett värdefullt verktyg. Om den skulle varit möjligt att ta tillvara den på ett effektivt sätt skulle både medarbetare och företagets utveckling kunna dra stor nytta av det. Jag har undersökt hur denna kunskap skulle kunna förvaltas för att de anställda ska kunna få mer ansvar och möjlighet att förbättra sin arbetsplats med hjälp av olika metoder. Detta har jag gjort i samarbete med företaget Jidoka Innovation och deras metoder under samlingsnamnet HelpMe.

Dokumentation i förskolan : Fem pedagogers syn omkring dokumentationsarbetet i verksamheten

Syftet med vår undersökning är att försöka få insikt i vilka tankar fem pedagoger har om dokumentation i förskolan och hur de använder sig av dokumentation i sitt arbete. Frågeställningarna vi använt oss av är: Hur ser fem pedagoger på dokumentation i förskolan och hur använder pedagogerna sig av dokumentation i verksamheten. Vi har använt oss av kvalitativa intervjuer på fem pedagoger som är verksamma inom förskolan. Pedagogerna anser att dokumentation hjälper dem att se deras egen och barnens utveckling för att stärka arbetet i verksamheten. Reflektion över dokumentationen gör att utvecklingsprocesserna synliggörs och detta underlättar samarbetet med föräldrarna.

Analys och produktionsförbättring på monteringslinan Vensafe

This study is preformed at Westbaltic Components placed in Töcksfors Sweden. Themain target in this study is to make one of the company?s assembly lines better andmore effective. The assembly line constructs vending machines for different stores allover Europe.It will contain tobacco, snuff, cigarettes and shaving blades and many more similarproducts.The first step in our study is to locate the daily problems and find out a good way toreduce them and make them disappear. A good way to do this job easier was toconstruct a visualizing board.

Att göra eller inte göra : Hur kontroll och nyfikenhet påverkar regelverket på Facebook

This paper is a literature study on search engine optimization (SEO) considering the leader of the search engine market: Google. There´s an introductory background description of Google and its methods of  crawling the Internet and indexing the web pages, along with a brief review of the famous PageRank algorithm. The purpose of this paper is to describe the major important methods for improved rankings on Google´s result lists. These methods could be categorized as on-page methods tied to the website to be optimized or off-page methods that are external to the website such as link development. Furthermore the most common unethical methods are described, known as ?black hat?, which is the secondary purpose of the text.

Välbefinnande, psykosocial arbetsmiljö och deltagande i friskvårdsaktiviteter bland anställda på ett tillverkningsföretag

Work environment activities, such as work health promotion, can take place at different levels - though the best result is obtained when all levels can interact. The overall aim with this study was to examine the impact of health promotion on work related well-being and stress in an industrial company. The focus was on employee experience of and participation in company initiated wellness activities. A quantitative cross-sectional study was conducted in which parts of the Copenhagen Psychosocial Questionnaire (COPSOQ II) were used to examine factors in the psychosocial work environment, and well-being was examined with the Satisfaction with Life Scale (SWLS). In all 303 employees (50 %) responded to the survey.

Dexametasons effekt på trombocytaggregering och syreradikalproduktion

Platelets are important for the healing of damaged blood vessels since they have an importantpart to play in the coagulation process. At the same time, the blood must be kept fluid and notcoagulate at the wrong time. Therefore there are factors that effect the aggregation of plateletsin a positive or a negative way.Previous investigations have shown that platelets during stirring conditions produce reactiveoxygen species (ROS) that weaken the inhibiting effect of nitric oxides (NO) on platelets andthat the drug Dexamethasone (Dex) can reduce the ROS-production.The aim of this project was to investigate if glucocorticoids, in this case Dexamethasone,could restore the inhibiting effect of NO on platelets and if there was any decrease in ROS-production.The result of the ROS-measurements showed a great variance and it was difficult to draw anyconclusions from them, but a clear decrease in ROS, as previous reported, was not shown. In the aggregation experiments the inhibiting effect of NO was observed through the drug S-nitroso-N-acetylpenicillamine (SNAP), a NO-donator.From the aggregation experiments, the result seemed to be that SNAP during longerincubation time lost its inhibiting effect, probably because the cells become desensitized.With superoxid dismutase (SOD), the effect of SNAP increased, both in the experiment withlonger and shorter incubation times. Dex seemed to reinforce the aggregation in relation toboth SOD and SNAP.

Simuleringsverktyg som hjälpmedel vid optimering av signalavstånd inom järnväg : Simulation tool as a help for optimization of signal distances on a railway track

The project Design analysis and proposals of plastic screw caps in Australia was performed at Högskolan Dalarna incooperation with University of Western Sydney, Australia. The Swedish company Tetra Pak, in Lund, were assigner forthe project that was performed 2006-2007. The commission was to do a survey about the packages for non-carbonateddrinks in Australia. The bottles had to be plastic, able to open in one step and with focus on the caps.The project has result in design analysis and a new proposal of a plastic screw cap for the Australian market. Sixbottles were choosen and they were all testet on 20 consumers each with a Likert-scale test.

Evolutionär algoritm för schemaläggning av kontinuerligt skiftarbete : Schemaläggning med ergonomiska riktlinjer

Många organisationer har ett behov av bemanning hela dygnet alla dagar i veckan. Personal vid sådana organisationer organiseras i arbetslag som enligt ett arbetsschema löser av varandra under dygnets gång. Beroende på hur dessa arbetsscheman utformas kan de få en negativ inverkan på personalens hälsa. Den här rapporten handlar om utvecklandet av en algoritm som genererar arbetsscheman med ergonomiska riktlinjer, det vill säga arbetsscheman som utformats på ett sådant sätt att negativa effekter på personalens hälsa undviks. Algoritmen som utvecklas baseras på optimeringsalgoritmen Squeaky Wheel Optimization.

Analys av systemfaktorers påverkan på tillförlitligheten i distributionsnät

In this master thesis outage statistics covering tree years from two distribution grids are analyzed with the purpose to deduce which factors yield outages. The statistics are extensive therefore allowing in-depth analysis of both customer and system related factors. From this starting point and as a model of explanation energy not supplied is studied as the consequence and the measurement of the inconvenience caused by outages. Different methods for calculating energy not supplied are developed and studied and put in comparison to the method used in Network Performance Assessment Model, which is the Swedish frame work for regulating electricity distribution.Analysis of the outage statistics show a relation between the type category of customer and outages that can be deduced to the variance and the density associated with that customer category. Prioritization of different customer categories is elevated also in this aspect.

Hur ser börsnoterade fastighetsbolag på vakans : En undersökning av den kommersiellafastighetsmarknaden

The commercial real estate market makes up a large part of Sweden's property portfolio, as well as other open, free markets in the real estate market it is regulated by supply and demand. There are several factors that affect the supply and demand in the commercial real estate market, for instance the price, type of real estate and the condition of the real estate. In order to achieve success in the commercial real estate market it requires that real estate agents have a certain expertise and flexibility in their thinking to adapt commercial real estates to supply and demand. Active investors on the commercial real estate market are for instance private real estate agents, their knowledge and experience will help increase the value of commercial real estate in the long run. In order to provide the market flexibility in its real estate portfolio, vacancy is a factor that can be used.

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