Sök:

Sökresultat:

20450 Uppsatser om Information model - Sida 21 av 1364

Modellering av reserv- och nödkraftsystem i JAS 39 Gripen

Simulation is a vital tool during development of JAS 39 Gripen, since money and time can be saved.The Auxiliary and Emergency Power System, AEPS, is a subsystem of the secondary power system in Gripen. It has the function of providing the aircraft with electrical and hydraulical power before activation and after deactivation of the main engine. The system also functions as backup in case of a safety critical problem in the main power supply system. The system basically consists of a control unit and an auxiliary gearbox. The gearbox is driven by an air turbine.

Metoder för prediktion av kardiovaskulär sjukdom med njurfunktionen

This study examines if the prediction of cardiovascular disease in hypertensive patients can be improved upon when renal function and microalbuminuria are added to the classical risk factors The predictive capability of a model is measured by discrimination, calibration, reclassification and Harrell's C.The results are ambigious. In most cases, microalbuminuria should be included in the model, but the results regarding the other measures of renal function are varied. Therefore, the selection of risk factors to include in the model depends on which measure of prediction one prioritizes..

Att splittra en hierarki : Applicering av poststrukturalistisk feministisk teori på SAB-systemet

This paper analyses what effect an application of a specific poststructural feminist theory has on the Swedish classification system SAB. The purpose is to study if it is possible to open up the current representation of gender towards a more multiple one. The study is both theoretical and empirical. The theoretical part include a short presentation of both classification theory and feminist theory. The study also presents the critic that poststructual feminists submit.

Vems ansvar är krogentrén?

The purpose of this master?s thesis is to find out in which ways a group of first generation immigrants use Swedish papers and magazines in a public library and which information needs this group has about Swedish society. One important aspect in this essay is integration of immigrants in the Swedish society as a possible effect of newspaper reading. The method used in this study is qualitative. Data is generated through semi-structured interviews.

Ett företags internationaliseringsprocess : - i ett land kulturellt skilt från dess hemmamarknad

AbstractPurpose:The purpose of the study is to describe the internationalization process of one firm when in a country culturally diverse from the firm?s original market.Methodology/approach:The study is a single case study which examines one firm?s internationalization process when entering the Chinese market. The approach has been an empiric interaction between empirical and theoretical data.Findings:The theory of the Uppsala model was applied to the case-company to test the model?s completeness. The authors found weaknesses and added three more aspects to the model.

En klimatanpassad järnväg : Långsiktig planering av infrastruktur i ett föränderligt klimat

Global warming is going to affect our society in many ways. One can say that the problem we face has two different sides. One of those sides has received a lot of attention, namely how we can reduce our emissions of greenhouse gases. However, because of the climate system's inertia the climate will continue to evolve over a period, no matter how much we will cut back on emissions. Because of this, we have to start adapting our society to the climate changes that we cannot influence.

Gestaltningsförslag till ny förskola på Zakrisdal

Due to increasing regulations regarding new diesel vehicles particulate matteremissions the new Scania truck, Scania Euro 6, has been equipped with a particulatefilter. This component effectively stores the particles in the exhaust gas but must becleaned in order to prevent itself from clogging. The filter is cleaned through aprocess named regeneration which is a thermodynamic process in which thetemperature of the filter is raised through fuel supplied to the exhaust gas.The purpose of this thesis is to contribute to the development of improved controlstrategies of the temperature during the regeneration process through thedevelopment of model-based controllers. These controllers are designed in order tohave good performance in stationary as well as automatic regeneration.In order to develop these model-based controllers a model of the system isconstructed. The model is described as a linear thermodynamic grey-box model withflow varying parameters, showing good results in validation.The model provides a simulation environment during the controller design, which isfocused around the development of linear regulators with the exhaust gas mass flowas a scheduling variable whose size determines controllers? mode of operation.

Underhållskostnader på rundbalspressar :

Costs of maintenance on agriculture machines is something that many farmers has a low knowledge of, it can depend on low interest or that the farmer don?t have enough time. To make it easier for the farmers they can use many computer programs which are available on the market. In this program they can calculate their costs of maintaince on their agriculture machines, for example STANK and JTI machine calculation program. Most of this program is using Svensson (1987) costs model whish was made in Sweden in the middle of 80 decade in a large study.

Klimatsimulering av ett kontorsrum : Hur de termiska stigkrafterna påverkar ventilationseffektiviteten

AbstractIn urban societies people spend more and more time indoors, which put great demands on the indoor environment. If the ventilation is to manage the removal of unwanted substances in the indoor air, a good mixing of the air is required. The question arises that, whether the buoyancy forces will counteract a good mixing of the indoor air or not?This report aims to clear up the difficulties whether you need to consider the buoyancy forces or not, when adjusting a ventilation unit. For studying the indoor mixing of the air a two dimensional model is constructed in COMSOL Multiphysics.

Modell och analysverktyg för beräkningav frekvensförlopp

The power system modelled in this thesis work has been developed for simulationwhen e.g. the production in some part of the power system is changed. The powersystem has been modelled according to the swing mass of the system, the frequencydependency of the load and the turbine governor. The model determines the systemfrequency, the period of regulation and the power exchange between the differentsubsystems in the Nordic synchronized system.In this model the system frequency is assumed to be the same in all different parts ofthe power system and the voltage conditions in the power system are neglected. Forthat reason power swings does not occur between different subsystems in the powersystem, which usually occur as a result of the swinging connection between thetransmissions line.

Kurslitteraturdilemmat. En undersökning av hur universitetsstudenter söker sig fram till och får tag på sin kurslitteratur.

This master?s thesis investigates in which ways students seek out and access their textbooks and how they use their university?s library in this process. Data is collected through interviews from six students several semesters into their studies at the University of Stockholm. For the interviews two students each were selected from the fields of law, economics and humanities. The empirical findings were analyzed using T.D Wilson?s model of information behavior (1997).

När bok blir film? : En jämförande analys av boken och filmen Catch me if you can

AbstractTitle: When book becomes film... ? a comparative analysis of the book and film Catch me if you can (När bok blir till film?En jämförande analys av boken och filmen Catch me if you can)Number of pages: 46Author: Majlinda JunikuTutor: Amelie HössjerCourse: Media and Communication Studies CPeriod: Autumn term 2007University: Division of Media and Communication, Department of Information Science, Uppsala University.Purpose/Aim: To study what model of dramaturgy belongs to the film Catch me if you can and to see what has been crossed out, altered and added from the book so the narrative will fit this model.Material/Method: The film Catch me if you can and the book with the same name has been used to analyze the differences between them. I have divided the differences into three categories: Crossed out, Altered and Added. In the analysis section these have been presented in each section of the film.Main results: Catch me if you can is definetly a film made with the design of the Anglosaxon model, mostly because of its timestructure and that it portrays an action and not just a condition which is normal in the epic-lyric model.

Nitrat i grundvattnet : Modellanalys av vattenflöde till Hörviks vattentäkt

A well, situated on Listerlandet in the western part of Blekinge in Sweden, has a very high content of nitrate. Water with a too high content of nitrate is hazardous to human health, in particular to small children. The area surrounding the well is mostly drained agricultural land with some larger farms for chicken and mink. The well takes its water from the bedrock and is deeper than most other wells affected by nitrate. The bedrock in the area is dominated by limestone with a relatively high flow of water.This thesis was performed in order to find the source of the nitrate.

"Challenges when implementing standardized and processes within a customer service unit"

 Abstract  Interest in Lean grows and spreads to the public from industrial and service sectors. Lean is currently used in administrative processes and it is called Administration but can administration be Lean? The aim of our study is to develop a useful model for a successful implementation of Lean Administration by using various scientific articles, books and information from the case study.The part of the purpose is to: ? Identify critical success factors that arise? Identify the challenges arising from the implementation of Lean Administration.We have studied a Division within Distribution at GE Healthcare in Uppsala. The model that we have developed provides challenges and success factors for a successful implementation.In order to succeed in implementation, a culture that promotes continuous improvement must exist in the organization. A key success factor is to understand Lean Administrations structure and principles.

"Fördjuparen" och "Uppdateraren" - nya mönster för nyhetsanvändning för unga vuxna

AbstractTitle: The ?Investigator? and the ?Updater? ? new patterns of news use among young adults.Number of pages: 48Author: Anna StrinnholmTutor: Amelie HössjerCourse: Media and Communications, D- levelPeriod: Fall of 2005University: Division of Media and Communication, Department of Information Science, Uppsala UniversityPurpose/Aim: The aim of this essay is to provide an description of how daily newspaper, TV, radio and the Internet are used by young adults in order to contribute to Lennar Weibulls model ?a typology of the Swedish mediasystem from an audience perspectiv?.Method/Material: The method of gathering of empirical material has been conducted by interviewing eight people of how they use daily newspapers, TV, radio and The internet to inform themselves of the daily news. The empirical material has then been analysed by applying a two step method, of first making a summary of the interviews and secondly making a comparison with a model of Lennart Weibull ?a typology of the Swedish mediasystem from an audience perspectiv? .Main results:Two different types of ideal media users can be drawn from the empirical research, the ?Investigator? and the ?Updater?. The updater search for news to stay updated and relies on the Internet as main source of information.

<- Föregående sida 21 Nästa sida ->