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4155 Uppsatser om Mechanical engineering - general - Sida 4 av 277

Utveckling av modulbaserad 11C-processutrustning inom PET : Presentation av idéer och koncept

This report describes the planning and the accomplishment of the final diploma workat the study program Mechanical Engineering, Department of Engineering Sciences, Uppsala University. Two students carried out the diploma work at GE HealthcareHusbyborg in Uppsala.The aim of the diploma work was to develop and improve existing processequipment for 11C-radiochemistry in PET. The process equipment was to be dividedinto smaller independent modules to make it more flexible. Part of the existingprocess equipment is an oven that is supposed to perform a specific chemicalreaction. One of the main goals was to study and improve this oven.The work could be divided into three main phases: 1.Present concepts for one module, and interface between different modules.

Utveckling av takra?cken fo?r sla?pvagnar

This report is a bachelor thesis work in the field of product development and design. The assignment has been to develop a solution for roof racks, normally used for cars, to fit on the open trailer models FS1425 and Alugance. The project was implemented by Johan Andersson and Victor Karlsson, students at the Mechanical Engineering program with a focus on product development and design at Jo?nko?ping?s school of Engineering, in spring 2012.The client wants to use transport solutions in the same way as roof racks on cars. The user of such a product is assumed to desire simplicity, safety and an attractive design with an appealing price, which has been a challenge during the thesis work.Pre-studies have been conducted to examine the potential competitors and gain knowledge in the research area.

Volatilitetsprognoser på den svenska aktiemarknaden: Tillämpning av Arch Typ modeller

This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.

Osäkerhet i investerares avkastningsbedömning av kommersiella fastigheter. - Osäkerheter i bedömningen av drift- och underhållskostnader?

This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.

Magkänsla mot matematik : Kan mekanisk rekrytering förhindra diskriminering?

The aim of this study was to investigate if a mechanical recruitment process could be a useful tool for employers to avoid discrimination. National and international law protect jobseekers from discrimination during the recruiting process. Despite this individuals frequently report that they are treated unfairly when they apply for a job. In line with this research shows that some individuals do not have the same opportunities in the labour market as the rest of the population. This study focus on discrimination based on ethnicity, age, gender or disability.Today most of the hiring decisions are based on employers professional judgement.

Cost engineering : Kostnadsuppskattning inom custom made-tillverkning

Globaliseringen innebär ökad konkurrens för företag vilket gör det viktigare för företag att snabbt kunna utföra sina kostnadsuppskattningar. I detta arbete undersöks förutsättningarna för att använda moderna teorier inom cost engineering för att kunna förkorta ledtiderna vid förkalkylsarbetet för företag inom custom made-tillverkning. Inom cost engineering har teorier för kostnadsuppskattning används för att beräkna tillverkningstider för tre olika produkter hos ett fallföretag. För att få en bra beskrivning av problematiken med kostnadsuppskattning inom custom made-tillverkning har design science-metodologi använts under arbetets gång.  Resultatet av arbetet visar att förutsättningarna för att använda moderna teorier inom cost engineering för kostnadsuppskattning hos custom made-tillverkande företag är att historisk data avseende för- och efterkalkylsarbete finns tillgänglig.

Neutral bolagsskatt ? Hur bygg- och fastighetsbranschen skulle påverkas av förslaget

This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.

Patenträttsliga aspekter på reverse engineering: ett klargörande om under vilka förutsättningar reverse engineering inom tillverkningsindustrin är tillåtet enligt patenträtten

Denna uppsats har som syfte att klargöra hur långt det är tillåtet att med reverse engineering experimentera med en patentskyddad uppfinning innan patentintrång föreligger. Främst förs en diskussion om hur långt det är tillåtet att experimenteramed en patentskyddad uppfinning, utifrån patentlagens experimentundantag, utan att kränka ensamrätten som patentet ger. För att svara på denna fråga börjar diskussionen ur ett svenskt perspektiv i den svenska patentlagen, med ett instick ilagen om skydd för företagshemligheter. Diskussionen förs sedan ut i Europa för att se hur bedömningen av reverse engineering och experimentundantaget gjorts där och till sist vänds blicken mot USA. Bedömningen som görs är att reverse engineering ges ganska fria händer så länge målet för processen är att finna ny kunskap utöver den kunskap som finns inbäddat i patentet.

Incitament för fastighetsägare att omvandla bruna kontorsfastigheter till gröna - När och varför de väljer att investera

This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.

Rening av avloppsvatten efter skärprocess

ABB I-R Waterjet Systems combines the robotics and motion expertise of ABB Flexible Automation with high-pressure intensifier/pumping technology from Ingersoll-Rand to provide and continue to develop innovative waterjet cutting systems for global markets. The purpose of this assignment is to develop a process water purifier. The purifier should be applicable as an option to ABB I-R?s production cell Cutting-Box. At first hand the process water should be purified well enough to let out in the municipal sewage system, but the ultimate solution is purifying the process water to the range that recycling is possible. When investigating the different principle of purifying water, a research of different products and their manufactories was done. These different products were compared and the principle of filtration was the most applicable, as most of the products were designed for far larger applications. As the process water contains quite large amount of particles, it is necessary to perform the filtration in different steps. The process water purifier is therefore composed of a module of coarse filtration and one of micro filtration. In the module of coarse filtration the mainly amount of fibres and particles are eliminated. They are kept back in the container unit with the larger fragments and dumped with these when the container is emptied. In the module of micro filtration the filtration is performed in two steps. In the first step particles larger than 50?m are eliminated, in the second step the micro filter is setting the range of purifying, in this case 10?m.

Prototyputprovning av upphängningssystem

Examensarbetet gick ut på att stötprova ett system för upphängning av kablar och rör i fartyg. Vid stötprovningen monterades upphängningssystemet i en fixtur. Gruppen fick fria händer att utforma fixturen. Med hjälp av Fredy Olssons teorier om produktframtagning utvecklades en fixtur bestående av fyrkantrör. Genom att värdera och selektera bland de lösningar som presenterades i examensarbetet ?Upphängningssystem? BTH-IMA-EX?2000/C-02-SE och andra nytillkomna likvärdiga lösningar, har gruppen kommit fram till och stötprovat ett system, bestående av aluminiumprofiler och vinklar från Bosch Rexroth.

Militärt stöd till samhället

This report covers a description of the military support attainable to society and made available by the Swedish Armed Forces, in the event of a crisis. The main focal point is the needs of the rescue services..

Tillförlitlighet hos information som hanteras av flera användare och genom flera system

When investigating mechanical problems it is often more convenient to deal with scalars rather than vectors. In this project methods stemming from the field of analytical mechanics, which lets one derive the equations of motion using scalar quantities instead of vectors, have been used. Two mechanical problems were investigated, a double pendulum with a spring and particles orbit in a sphere. The equations of motion of the two systems were derived with the assistance of computer algebra, using Maple and the external package Sophia. The systems were investigated with regard to periodicity and conserved quantities..

Metod och anordning för åstadkommande av stegrande presskraft i balpress

Det finns flera olika sätt att konkurrera med en balpress på marknaden. Ett av dessa är att minska cykeltiden för en komplett pressoperation. Härav formulerades en problemställning som lade grunden för examensarbetet. Problemställningen löd ?Metod och anordning för åstadkommande av stegrande presskraft i balpress, Nättraby Verktyg AB.? Sambandet mellan minskad cykeltid och stegrande presskraft gav lösningen med varierande hastighet på pressplattan. För att lösa problemet valdes en frekvensomriktare som omriktar matningsfrekvensen till elmotorn.

Sara skolkar: Ett mobilt frånvarorapporteringssystem

This bachelor thesis portray a project where the main task were to develop a computer based system prototype for handling of absence report at the upper secondary school af Chapman in Karlskrona. The project has been conducted in cooperation with students from the university programs software engineering and information economy at Blekinge Institute of Technology. Our task as MDA-students have been to survey the process of absence report of today through field studies and give a proposal of a graphical user interface which later were developed by the software engineers. The thesis also handles the cooperation with other students from other university programs..

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