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1389 Uppsatser om Filter materials - Sida 26 av 93

Uppföljningsverktyg för analys av användarloggar

In order to understand user behaviour and navigation patterns, user logging is today widely used in analysis and development of user interfaces. These user logs tend to be quite many and can contain a lot of different data. A big issue is how to process and display this data in a perspicuous way to the stakeholder. This study is about how to develop a prototype to handle this issue. It was solved by various methods from human-computer interaction.

Lokal anpassning och implementering av Operation Management System

In this thesis, a transparent model of the human head has been constructed which was filled with a substance that represented the brain. This model was later crash tested. This was done in order to examine how a transparent model of the human head can be constructed to generate accurate data from crash tests. It was also done in order to examine how impacts on the front of the head can deform the rear of the brain. When a head is decelerating, the brain moves forward inside the skull and may hit the front of the skull.

Protesutveckling

This report investigates the possibility of developing a new and improved hip prosthesis. The result were five different materials that could be used for the prosthesis. These five solutions were Silicone Nitrate on Cobolt Chrome, phase stabilized Zirconium Oxide on Cobolt Chrome, Silicone Nitrate on Silicone Nitrate, DLC coated phase stabilized Zirconium Oxide and Chromium nitride coated Cobolt Chrome on Cobolt Chrome. In addition to this it was also investigated how to best market the prosthesis and how to transport them from production sites to hospitals..

Mekanisk modell av människans huvud för simulering av skalltrauma och hjärnskada

In this thesis, a transparent model of the human head has been constructed which was filled with a substance that represented the brain. This model was later crash tested. This was done in order to examine how a transparent model of the human head can be constructed to generate accurate data from crash tests. It was also done in order to examine how impacts on the front of the head can deform the rear of the brain. When a head is decelerating, the brain moves forward inside the skull and may hit the front of the skull.

Arbetsprocess för materialanskaffning vid Forsmarks Kraftgrupp AB

This thesis has been made on behalf of Forsmarks Kraftgrupp AB and is the final part of the education of Bachelor of Engineering in ? Innovation, production and logistics atMälardalens Högskola.Forsmark nuclear power plant is located in Östhammars municipality at the coast of Uppland. The three nuclear reactors in Forsmark together produces approximately one-sixth of Sweden?s electricity consumption each year.The background of this study is that a large number of requests come to the purchasing department with incomplete information. Usually it is in the description of what is to be acquired as the information is incomplete, but also in knowing when Quality Control-functions (QC) is supposed to be used.The aim of this work is to describe and analyse the material acquisition process.

Lönsammare framtagning av kulventiler : med avseende på tillverkningsprocess och materialbesparing

AbstractThis is a thesis done in cooperation with the firm Somas and University of Karlstad. The project is an independent final examination part of the program in Innovation and DesignEngineering comprising 22.5 points, and performed by Mia Myrén Zreloff during spring term 2012. In parallel and collaboration, Fredrik Kjellin performs a similar job for the same company and with the same extent, but for the Program in Mechanical Engineering.The client and supervisor at the company have been Magnus Jansson and Anders Josefsson. At Karlstad University has technical supervisor been Hans Johansson, and in the design- and development process it was Monica Jakobsson. Examiner has been Fredrik Thuvander, professor in the Faculty of Technology and Science at Karlstad University.The mission has been to make a basis work for the company's own development and make a computational model to calculate, visualize and implement materials and other solutions in the manufacture of the company's ball valves.The project has undergone three major phases that included thorough study of the company, production, the problem and product.

Jämförelse mellan våtkompostering och andra VA-system i omvandlingsområden : en fallstudie i Norrtälje kommun.

Eutrophication of the Baltic Sea and Swedish lakes remains a major problem despite many years of effort to reduce the emissions of nutrients. One major source is waste water systems, especially private sewage systems. These sewages accounts for a very large share of nutrients per capita in comparison with citizens connected to larger sewage treatment plants. Norrtälje community has the greatest number of private sewage systems in Sweden. Discharges of nutrients, especially phosphorus, to the Baltic Sea from these sewage systems are significant.

ini

Preporsition for bachelor thesis project, working from the inside and out. Emphasising spatial quality and experience, More or less ignoring form and program. I?ve had issues with these aspects in earlier project, the form or the program takes alot of place in the project. I haven?t tried this approach before, it?s an attractive thought to allow the project take a form of it?s own, enclosing those spaces i create.The initial concept was to place the pools on the ground (not digging them into the ground) making them volumes that divide and define spaces.

?Vad spelar det för roll då om inte alla syns på bild?? : En studie av representation i förskolans miljö

The aim of this study is, from a norm-critical approach, to find, investigate and analyse human representation in the visual culture of one preschool in order to understand if the children enrolled are represented or not. The research questions are: In what ways is there imagery of human representations in images and materials designed for play? What skin-colors and origins are dominant in the data collected?We carried out a qualitative study in the form of visual ethnography. This method allowed us to use a combination of different data collection tools such as photography and ethnographic field notes to collect our data. The photographs we took of images and material used for play, was then analysed through semiotic picture analysis.

Analys och förbättringsförslag för riktkopplardesign

Ericsson develops a new stripline directional coupler. Its design is described in appendix B and differs from the directional couplers Ericsson uses in current products. The new directional coupler will be used for transmission power measurement in future UMTS 3G base stations.The most important parts of directional coupler theory are presented. It is necessary to study this theory to understand how the coupler works and how it should be designed to get good performance.Optimal directional coupler termination component values to get high directivity and broad directivity bandwidth have been investigated.The trim screws trim ranges have been studied.A simple analysis of serial production performance when termination component tolerances are taken into consideration has been done.The resistance components reactive (inductive/capacitive) characteristics at 2.14 GHz have been analyzed.The directivity performance limitations of the directional coupler, when Ericsson?s band pass filter is connected, are investigated.Design changes leading to better performance are proposed.

Kartering av COD och natrium i massabruk

Detta arbete innefattar en kartering av natrium- och COD-flöden i ett pappersmassabruk, samt en jämförelse med tidigare utförda karteringar. Med hjälp av analysdata från massaprover och filtrat kan tvätteffektivitet i massabruk beskrivas i olika matematiska modeller. I denna rapport har tvätteffektiviteten valts att presenteras med hjälp av en massbalans, tvättutbyte. Analyserna på massaproverna har gjorts på urkramat prov. Resultatet visar att jämfört med tidigare karteringar har tvättförlusterna ut ur sista tvättapparat på björkmassalinjen minskat med avseende på COD men inte med avseende på natrium.

IMAGE: Om tolkning av dagsaktuella bilder

This paper emphasizes that the analyzing and the intepretation of images, involves anholistic view, including intention, content, message, and the influence on the observer.The paper focuses on daily produced images. The starting point of this paper is ´image´in the concept of ´the written image´. The theory- and method textcritical perspective.used in this paper is close connected to Paul Feyerabends, Against Method, and toRobert Farrells work Feyerabend and Scientific Values. This papers specific ques-tionsare, 1) is analyzing and intepretation of images, subjective ?, 2) needs the subjectivityto be handled to limit arbitrariness and distortion ?, 3) is it appropriate to use a filterof awarerness as an aid to handle the subjectivity ? The answear to the threequestions, is short and clear: ?Yes?.

En IT-baserad plattform för skolförbättring : En kvalitativ studie av lärares informations- och erfarenhetsutbyte

This thesis has created an image of the exchange of information among teachers in the Swedish upper secondary school. The study indicates that the exchange of information seems to be limited at all levels and the exchange that takes place outside the own teaching team occurs mainly through teachers personal networks. The study also shows barriers that may exist and the opportunities that an increased exchange may generate. From the picture that the empirical material provides and the theory that is presented a discussion is made around how IT can best support the organizational learning in schools. A concrete proposal is that at national level an IT platform should be created, which primarily focuses on materials that are created by its users and has an open architecture with a single login..

Målinmätning med EO/IR-sensor på rörlig plattform

Detta examensarbete är en del av SNOD-projektet vid Totalförsvarets Forskningsinstitut (FOI), vars syfte är att utveckla ett sensorsystem med infraröda- och videosensorer och integrerat navigationssystem. Sensorsystemet är placerat i en kameragimbal och kan användas på rörliga plattformar, t ex UAV:er, för övervakning och rekognoscering. Gimbalen är till för att möjliggöra inriktning av sensorerna i önskad riktning.Detta examensarbete behandlar en metod för inmätning av målkoordinater från den rörliga plattformen, det s k QWIP/MASP-systemet. Detta efterliknar ett UAV-system. Metoden för inmätning baseras på ett extended information filter där målkoordinaterna filtreras fram.

Utvärdering av infästningar i sandwichkonstruktioner för fordonsapplikationer

The automotive industry is increasingly studying lightweight solution in their designs, also rational production and low costs in materials and manufacturing methods are of great interest. This thesis consisted in the practical evaluation of anchors for sandwich panels. The object was to study loads of shearing and pull out of the plane. The experiments were carried out on panels made up of 1mm aluminium coatings and 50mm extruded polystyrene (XPS) at its core. As the fasteners used simple methods such as blind rivets, screw and glue.

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