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496 Uppsatser om Linear programming - Sida 22 av 34

Gymnasiebehörighet och sociala faktorer med linjär regression /  The Influence of Social Factors on School Performance using the Linear Regression Model.

I det här arbetet har linjär regression använts för att undersöka omolika sociala faktorer påverkar om elever får gymnasiebehörighet. Undersökningen gjordes med kommunvis aggregerad data och faktorerna somundersöktes var utländsk bakgrund, försörjningsstöd, utbildningsnivå, arbetslöshet, disponibel inkomst, lärartäthet, andel lärare med pedagogiskexamen och skolornas kostnad.Statistiskt signikanta resultat erhölls för utländsk bakgrund, försörjningsstöd, utbildningsnivå, disponibel inkomst och lärartäthet. Enligtundersökningen påverkar utländsk bakgrund och försörjningsstöd gymnasiebehörigheten negativt. Utbildningsnivå och disponibel inkomst påverkarden positivt. Lärartätheten påverkar gymnasiebehörigheten positivt omandelen lärare i svenska som andraspråk och modersmål inte överstiger10,4 %.Resultaten för resten av de undersökta faktorerna var inte statistisktsignikanta och därför kan inget sägas säkert om dem utifrån den härundersökningen.Observera att inga slutsatser kan dras på individnivå.

Förstudier av kommersiella fastigheter : En analys av arbetssätt ur ett projektledarperspektiv

This thesis is written at WSP management and investigates the practice of pre-project planning and feasibility studies at Swedish construction companies, through the study of the ongoing feasibility study of the mall Sturegallerian in Stockholm, and through interviews with experienced project managers in the construction industry. There is currently a big span in the way Swedish construction companies plan the pre-project phase and the aim of this thesis is to present a more generic and standardized way that helps minimize project risks and maximize efficiency and profit. The result is a generic model which can be used in pre-project planning. The model describes the phases in the preproject planning process and the activities that span these phases. Is also describes the categories of professions that need to participate in the preproject planning group and which activities that each profession executes. The other result is a list of factors that need to be considered for a well performed pre-project phase, as found during the interviews. Among others the thesis stresses the importance of involving the client as a key participant in the process.

Blodtrycksfall, pulstryck och lindriga kognitiva symptom - En polytom logistisk regressionsanalys

People live longer. There is a growing need to increase the knowledge of aging and of the need among the elderly for medical care in the near future. As a step towards meeting this need, a survey among the elderly in Skåne is made by the division of Geriatric Medicine in Malmö University Hospital. This survey is called Gott åldrande i Skåne, GÅS. A frequent decease among the elderly is Mild Cognitive Impairment (MCI).

Omega System Kalibrering: Strål X-Separation mätning och kalibrering

Micronic Laser Systems AB produces and develops machines for the photo mask production market. One of their products is the Omega machine which exposes photo masks using 5 laser beams simultaneously. It is important that the distance between the each laser beam, the x-separation, is the same. The x-separation is today measured by exposing a photo mask with a certain pattern and thereafter measured with a metrology system. This takes to much time and it is desired to find a faster method to measure the x-separation without loosing precision.The task for this master thesis is to improve an existing measurement method which uses a calibration mask.

Analys av institutionell kapitalförvaltning: Stiftelserna som bildades ur de forna löntagarfonderna

This paper studies the research foundations created in 1994 from the former wage earners? funds out of a portfolio management point of view. Firstly it describes the seven largest foundations and their different portfolio management structures. Secondly it analyses the performance of these foundations measured as the intercept, Jensen?s a, in a linear regression of the excess returns of a portfolio versus a proxy for the market, as well as the Sharpe-ratio.

Karttillämpningar för rikstäckande accessnät

Denna rapport aterger arbetsprocessen kring att utvärdera geograskatjänster, och att utveckla karttillämpningar för nätverk av rikstäckande omfattning. Arbetet utfördes pa plats hos DGC, en datakommunikations-, tele- och nätoperatör som distribuerar kundförbindelser i hela Sverige där konsumenter ansluts till stamnätet. Uppgiften bestod av att utvärdera möjligheter till att slå upp koordinater för etablerade kundplatser, rita ut accessnätet i ett kartgränssnitt och ta fram ett eller flera stödverktyg för bland annat orderprocesser. Användningsfall utifrån önskemål, arkitekturmönster samt analys av yttre leverantörers tjänster för geocoding avgjorde hur det slutgiltiga systemet var utformat. Mjukvaran som utvecklades integrerades både i bentliga system och som ensamstående tillämpningar.

Uppfyller BIM förväntningarna som arbetsmetod för broprojekt?

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.

Analysis of CD4+ and CD8+ T-lymphocytes : A comparison between EPICS XL and Celldyn Sapphire

Flowcytometric technology has been widely used for measurement of the absolute numbers of T-lymphocytes subsets in Human Immunodeficiency virus (HIV), defining the disease state, monitoring antiviral treatment, and identifying any risk for opportunistic infections. A manual preparing of the samples is required. More recently an automated and enclosed blood cell counting, Celldyn Sapphire has been introduced. In this study the performance of the Flow cytometer EPICS XL as a reference method for analysis of CD3+, CD4+ and CD8 T-lymphocytes was evaluated with blood from 40 individual?s samples.

UML i teori och praktik

Abstract During object-oriented system development, programming should be preceded by analysis and design to assure that the system fulfils the demands of the customer and simplify during the development phase and documentation. When modeling the analysis and design phases, several different notations may be used. One of these is the UML (Unified Modeling Language) which this thesis will cover. The aim is to compare the use of the UML i practice versus what is said in the literature. The investigation is built upon interviews at different companies to receive their reflections about the UML.

Skogsmyr och öppna vyer : Platsens betydelse för gestaltningen av Vi och Dom i Sara Lidmans Hjortronlandet

Sara Lidman?s second novel Hjortronlandet (1955) unfolds in the north of Sweden in the early 20th century. It describes the progress of modernity and the conflicting interests of an old local culture and a new more ?civilised? one. The two cultures are constituted by different value systems and in the novel they are represented by two neighbour communities.

Från apparat till App : Public service i ett förändrat medielandskap

This Bachelor thesis is a qualitative study of the public debate regarding the role of Public service in the media converged society today. The purpose of this thesis is to examine how the public debate, that is the Swedish Public service television and people with broad representative knowledge about Public service, motivates a change of the function of the Swedish Public service television.Our issues are: What does the public debate say about the function of Swedish Public  service television in our society today and how is a change motivated in this debate? How does the public debate look upon today´s media convergence and the fragmentation of the audience which, according to Denis McQuail, is a consequence of this?The method of this thesis is a qualitative analysis and we have analyzed ten opinion articles and Swedish Public service television magazine ?DittSvt?. The theoretical background was obtained from Henry Jenkins and Håkan Hvitfelts theories and thoughts about mediaconvergence. We have supplemented this with Denis McQuails theory regarding the fragmentation of the audience.In this thesis, we see that the public debate is a lot about diversity in Swedish Public service television programming and that the democratic base is still very important.

Förklaringsmodell för cykelresor i Trondheim : Fysiska och demografiska faktorers betydelse för det geografiska resmönstret

The work examines geographical variations of bicycle use in Trondheim municipality with the aim to create an understanding of what influences the use of bicycles and explain the geographical travel pattern for cycling. The work focuses on the how physical structures generates different transports effects. Where bicycle travels in Trondheim municipality are undertaken is described by using network analysis in ArcGIS, based on aggregated data from the travel habit survey (RVU) in 2009/2010. Trondheim municipality is divided into smaller geographical units (zoner) whose characteristics are described by 19 variables, categorized into 6 groups; Distance, Land use, Topography, Bicycle Facilities, Road characteristics and Demographic factors.By linear regression analysis in SPSS and ArcGIS Spatial Analyst, an explanatory model is elaborated. The variablesdistance to the regional center, workplace density, percentage separate bike paths and hilly terrain explains 78 percent of where cycle journeys are undertaken.

Automatisk lockmekanism : från idé till prototyp

Wavecraft AB develops medical equipment for heating of organic synthesises. The heating is done with microwaves, which improves the process in both speed and accuracy compared to the more traditional methods where heating elements are used. This report discusses the developement of an automatic lid mechanism for one of Wavecraft's product prototypes. The company assumes that the final product will be integrated by customers into fully automated systems, and the upgrade from a manually to an automatically controlled lid is therefore an important step in the product's developement process.The first stage och the project was an idea generation process. The ideas generated here were organized into five different concepts of which the best one was selected through the use of a concept matrix.

Analys av Nedbrytningsprodukter av Polymerer för Bitumenändamål

This project was aimed to study the degradation of polystyrene-butadiene-styrene block copolymer (SBS). SBS is used to modify bitumen, the binder in asphalt. From earlier studies it is known that SBS degrades in bitumen, but the degradation products have not been identified. To be able to determine the long term effects of SBS in the environment, degradation products need to be identified. Polystyrene forms rigid blocks with polybutadiene as a rubbery matrix between the ridgid blocks.

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.

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