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3943 Uppsatser om Model simulations - Sida 66 av 263
Källsorterade systems påverkan på avloppsreningsverk : växthusgaser, energi- och resursanvändning i modellstudie
The aim of this study was to evaluate the effects on a simulated wastewater plant regarding GHG emissions and use of energy and resources when implementing source separated wastewater systems. The effects were studied for different restrictions of effluent quality and for different temperatures on the influent. The simulation model BSM2G calibrated for Käppala wastewater treatment plant was used. The task was executed by simulating nine different scenarios with an increase in influent load from new connections equivalent to 3, 10 and 30 % of the present connections. These new connections were served by conventional, urine separated or black water separated systems.
Att konsumera, bidra eller skapa : En studie om deltagande i varumärkesrelaterade aktiviteter på Facebook
This study has researched different motivations for user participation in brand related activities on social media. The study used three types of participation to evaluate motivations for user participation. These types were the following: consuming content, contributing to existing content and creating new content. An online questionnaire was distributed on brand Facebook pages and was used as a foundation for two focus group interviews that were then held. The goal of the study was to see what motivates user participation, in order to aid companies and organizations in understanding users.
Riskkapital i svensk fotboll: En fallstudie om kontroll, tillit och förtroende
The aim of this paper is to examine how confidence in co-operative behaviour of partner is reached in a relationship between an entrepreneur and a venture capitalist. A case study has been conducted on a Swedish football club that has involved venture capital in order to develop the organization. The paper presents a theoretical approach which draws on a control model of interorganizational relationships developed by Dekker (2004) and a model developed by Shepherd & Zacharakis (2001) illustrating how control, trust and confidence is reached in a venture capitalist-entrepreneur relationship. The relationship between the football club and the venture capitalist can simultaneously be seen as an interorganizational relationship and a relationship between an entrepreneur and a venture capitalist. Because of the complexity of the relationship, different control problems prevail.
Design och implementering av styrlagar för generisk flygplansmodell
For research purposes Saab has developed a generic mathematical model denoted VEGAS of an aircraft with a configuration similar to JAS 39 Gripen. Today parts of Gripen backup control system are used also for VEGAS making the system subject to both corporate and defense secrecy. The main objective of this master thesis is to design, verify and implement public pitch axis flight control system for VEGAS. Furthermore, simplifications regarding the design process is to be examined. Design of pitch axis flight control system for the entire flight envelope has been carried out.
Visualization of Particle In Cell Simulations
A numerical simulation case involving space plasma and the evolution of instabilities that generates very fast electrons, i.e. approximately at half of the speed of light, is used as a test bed for scientific visualisation techniques. A visualisation system was developed to provide interactive real-time animation and visualisation of the simulation results. The work focuses on two themes and the integration of them. The first theme is the storage and management of the large data sets produced.
Nollföljdsmodellering av transformator-Beräkningar av följdproblem vid ökad kablifiering på mellanspänningsnivå
Historically transformers with system earth equipment have been modeled as open circuits in zero sequence. This approximation has been satisfying, but lately it has been discovered that equipment on one side of the transformer have responded to faults that occurred at the other side. Most of these problems took place when the majority of the system on the secondary side of the transformer contained cables. These findings have led to questioning whether or not the former model of the transformer in zero sequence is correct. This report investigates if it is necessary to represent the transformer in zero sequence in another way than it is usually done today.
Industriellt varumärkesarbete - fluga eller framtid?: - en fallstudie av fyra industriföretag
The purpose of this thesis is to investigate industrial branding, which as a relatively new concept, both for practioners as well as academia, comprises a less explored application of the brand concept. The theoretical background of the study consists of marketing theory concerning the brand concept, and theory concerning industrial marketing. The empirical foundation consists of case studies of four industrial companies, based on interviews with representatives from the companies. All four companies have engaged in activities which they themselves see as industrial branding. Initially, the study sets out to determine the occurence of industrial branding, according to this study?s definition, and continues to tentatively explore the implications of branding in an industrial context.
Dominerande affärsmodeller inom området informationssäkerhet
Computers together with Internet have been growing enormously, during the last decade and the area of information technology has been growing in the same speed. As long as the surrounding environment evolves, the business models must within the IT-area, keep the same pace. So, how do business corporations handle this change to attract customers? How do the dominant business models look like? In many cases, they are apparently much the same. But what differences can we see and what areas can be improved? We have showed that the IT area isn?t just one, it consist of several segments.
Robotstyrning med metoden Sliding Mode Control
The task in this thesis is the steering of one of Saab Bofors Dynamics robots using Sliding Mode Control, a method they never used before. The robot constitutes a system which in addition to perturbations and uncertainties due to modeling imprecision, hold the difficulty of being highly time variant. In order to be able to keep required performance with uncertainties and modeling imprecision present, the use of robust control methods like Sliding Mode Control is necessary. SMC is based on the states of the system being forced to stay on or in the direct vicinity of a hyper plane in the state space which is chosen in a way that gives the system dynamics desired properties. Other advantages with sliding mode are reduced order dynamics on the switching surface and total insensitivity to some uncertainties and perturbations.
Ett femstjärnigt hotell med full service : En kvalitativ studie om kvinnlig omsorgspersonals vardag och salutogent arbetssätt inom äldreomsorg
This study aims to seek knowledge of the salutogenic model within geriatric care. This is done by problematizing the female geriatric care personnel?s everyday life and conditions. The study?s comparative empirical focus includes interviews with ten women that work within geriatric care, at two different workplaces.
Det civila samhällets roll för demokratin En kvalitativ textanalys av regeringarnas propositioner mellan 2002 och 2008
When Sweden acceded to the European Union in 1995 the term social economy was introduced to the Swedish context, gradually replacing the term civil society. This replacement can be seen as an indicator of a changing meaning of what the concept of civil society used to stand for.The aim of this essay is to study if it is possible to identify changing perceptions of the role of civil society for democracy in Sweden in government bills between 2002 and 2008, and, if so, what effect does this have on the delineation between the civil society and the government.An analytical model is proposed consisting of two dimensions which both capture the roles of civil society for democracy and the model examines how those roles relate to the government.The conclusion is that the government still sees the main function of civil society as a democratic school and a change agent for democracy. However, there is strong evidence to suggest that the civil society is increasingly regarded as more of a welfare producer than a fosterer of democracy..
"Guud, vad tråkigt." : Matematik och elevmotivation
Drinking water is produced from raw water and is either from groundwater or surface water. This thesis aims to find out if the cleaning process of raw water is sufficiently effective. This is important because consumers are otherwise at risk of waterborne infection caused by pathogens. There are three groups of pathogens; bacteria, virus and parasite. These have different characteristics which mean that they require different water treatment to be separated.
Supermarket Strategies : Kvalitativ studie av Ica Maxi, Coop Forum och Citygross konkurrensstrategier
This thesis investigates if a system for small scale electricity production located in anurban environment can be profitable. The work has been divided up into two parts,one extensive literature study and one case study. The purpose of the literature studywas to investigate the area, resulting in a choice of which technology to be studied indepth in a case study.In the case study a system containing small scale wind turbines and photovoltaicsmounted on Gränby Centrums roof was examined. From data containing wind power,wind direction and total irradiation, possible production from a system weresimulated. Three products of each technology were examined in the simulations.From the simulated production an economic analysis was carried out, this toinvestigate if a system is profitable.
Utvärderingsmodell för förpackningar och dess hantering i dagligvaruhandeln : ? en jämförelse av ergonomi-, miljö- och logistikparametrar
Companies become more and more aware of the added values of the packaging. A well chosen and developed packaging can reduce the costs for the companies through reduced costs for transports, reduced quantity of waste and discards and increased goodwill for example. The companies? costs for salaries can also be reduced due to the increased packaging handling efficiency and the reduced costs for sick leave, reduced work capacity and rehabilitation etc. that can arise when handling poorly developed products and packaging.
LOCAL ADAPTATION IN EMERGING MARKETS ? in theory and reality : Study of the Swedish subsidiaries in China
Some MNEs encounter frustration or failures when they enter a new market. The main reason is due to a lack of adaptation. There is a lack of theoretical study about the local adaptation phenomenon of Swedish MNEs in China. Most studies are at the level of experience. Therefore, the purpose of this study is to find out the dimensions subject to local adaptation and their degree for the Swedish MNEs in China.