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1386 Uppsatser om Variable transport delays - Sida 45 av 93

Tillförlitlighet hos trafikolycksklassificering

Today?s wind power plants are only compensated for their reactive power consumption at no-load. As the wind power plants grow bigger the amount of reactive power they need also increases. This is no longer a problem that can be ignored, especially as the net owners are beginning to charge the reactive power they transport.In this thesis a couple of different methods of compensation and their prices will be discussed and evaluated. Problems, such as self-excitation, that can occur if one fully compensates the wind power plant will also be brought to surface.

Undervattensvågbrytare - En modellstudie

Today?s wind power plants are only compensated for their reactive power consumption at no-load. As the wind power plants grow bigger the amount of reactive power they need also increases. This is no longer a problem that can be ignored, especially as the net owners are beginning to charge the reactive power they transport.In this thesis a couple of different methods of compensation and their prices will be discussed and evaluated. Problems, such as self-excitation, that can occur if one fully compensates the wind power plant will also be brought to surface.

Kan man minska bilåkandet i staden? : sett ur ett stadsplanerarperspektiv

The reason why this essay is written can be parted in two, whereas one would be the global trend of urbanization that occurs to this moment and forward, whereas the other would be the debate of how motorism has come to be an issue of sustainable management of our cities and our environment. In purpose to deliver a thorough understanding of how the car and its capacity has come to shape the society of today, and to emphasize the problems it´s brought, a historical survey has been made, followed by the report of problems to the society formed by the needs of the car, discussed in several environmental issues, such as jamming, noise and air pollution. This is followed by the discussion of potential solutions for how city planning could return to the focus of the human scale and perspective, in purpose to correspond with the issue of ways to decrease the car use in towns. In conclusion, the given solutions are discussed, where examples like shared space, investment in public transport, mobility management and the theory of the assembled city are included, with aid from literature, to finally conclude the essay with personal thoughts of how the planning of today, or the given solutions, really are the result of sustainability for city planning from a human perspective.

Effects of Driver, Vehicle, and Environment Characteristics on Collision Warning System Design

The purpose of the present study was to examine effects of driver, vehicle, and environment characteristics on Collision Warning System (CWS) design. One hypothesis was made that the capability of collision avoidance would not be same among a driver, vehicle, and environment group with different characteristics. Accident analysis and quantitative analysis was used to examine this hypothesis in terms of ?risk? and ?safety margin? respectively. Rear-end collision had a stronger focus in the present study.

Likviditetsva?gen till mer informerade investeringsbeslut : En studie om sambandet mellan a?garkoncentration och likviditet pa? Nasdaq OMX.

Abstract Master Thesis in Business Administration, School of Business and Economics at the Linnaeus University, 2013 Authors: William Funseth and Tobias Åkesson Supervisor: Magnus Willesson Examiner: Sven-Olof Yrjö Collin Title: The liquidity route to more informed investment decisions - A study on the relationship between concentration of ownership and liquidity on Nasdaq OMX. Background and problem: Previous studies have shown that liquidity can explain differences in returns in corporate shares, the company's cost of capital and the valuation of the company. Based on the effects of liquidity we developed a research question concerning how concentration of ownership effects liquidity of corporate shares the studies conducted for companies listed on Nasdaq OMX during a period with major changes on the stock market and is also investigating weather other company-specific differences can explain differences in liquidity. Purpose: The study's purpose is to study the relationship between ownership concentration and liquidity, and whether other factors might explain differences in liquidity. Method: The study is conducted with a quantitative method and it?s based on data collected from 2006-2011 for companies listed on Nasdaq OMX.

Socialt läsande på nätet : En studie av virtuella bokcirklar enligt grundad teori

This master thesis examines online reading groups with swedish participants. The aim is, by way of introduction, to investigate what kind of online reading groups that exist and how they work. The overall question of the thesis is: how do a conversation about books on the Internet look like? The theory used is Grounded Theory and this is a methodology which has influenced the hole structure of the study. Grounded Theory apply that issues and hypothesis must be created from the collected material, and the author collected for this reason material in the form of survey answers, email-conversations, blogmaterial and articles to draw up exact issues based on this material.The material was sorted into four different categories; social reading, reading fellowship, virtual freedom and anonymity and the issues were formulated according to this categories.

Utveckling av kombisåg

Denna rapport avhandlar det examensarbete som genomförts av Rua Dawood och Noor M. Yasin, vårterminen 2013 vid Mälardalens högskola. Rapporten redogör för den design- och funktionsmässiga utvecklingen av en såg, med hänsyn till det uppdragsgivande företagets sortiment och användares önskemål.Vår uppdragsgivare är EKA-knivar AB, som är ett ledande företag inom tillverkning av knivar och sågar i Sverige. Av EKA-knivar AB fick vi uppgiften att utveckla en såg som kan passa för användning ute i skogen och hemma. Problemet med dagens såg är att den har skarpa och vassa kanter och ett icke ergonomiskt handtag som ökar belastningen på handen och handleden vid arbete.

Spillvärmeåtervinning ur kylvattensystemet ismältverket på Sapa Profiler AB i Sjunnen

The smelting process at Sapa Profiler AB in Sjunnen generates large quantities of waste heat which is absorbed by the cooling water when the aluminum is cooled down. This paper is the result of a Master?s Degree Project aiming to present the conditions for recycling the waste heat. The cooling water absorbs the heat from the aluminum at an average rate of 600 kW and the paper shows that it can be used to replace electrical power consumption for heating the production plant?s facilities.

Löslighet och transport av sällsynta jordartsmetaller i Källfallsfältets gruvsandsmagasin

Löslighet och transport av sällsynta jordartsmetaller i Källfallsfältets gruvsandsmagasinHugo de Campos PereiraSyftet med detta arbete har varit att kartlägga vilka mekanismer som styr lösligheten av sällsynta jordartsmetaller (eng. rare earth elements, REE) i sulfidhaltig anrikningssand vid den föredetta gruvan Källfallsfältet i Västmanland. För syftet har markvatten- och grundvattenprovtagning utförts, tillsammans med laktester och geokemisk modellering med Visual MINTEQ ver. 3.0.Resultaten visade att sulfidvittring är den främsta processen som styr pH i anrikningssanden, och därmed också indirekt REEs löslighet. Däremot är sulfidvittring ingen källa till REE i sig då ämnena inte föreligger sulfidbundna, något som oxiderat tillgänglighetstest NT ENVIR 006 visade.

Jämförelse mellan sojaböna och åkerböna som proteinfoder till växande grisar

The soybean can be used in multiple ways, and its high oil content makes it suitable for extraction. Soy bean meal, a by-product of the oil extraction, is a good source of protein with a high feeding value, and is therefore used in a number of different animal feeds. Further, soy bean meal has a low production price, which is one of the reasons for the extensive export of the product. There is a great demand for vegetable-based proteins, especially in the organic production where synthetic amino acids are banned. However, the current production of soy beans is not environmentally sound and that combined with the long transport distances amplifies the need of finding a locally produced protein source.

Kompensering av reaktiv effekt vid vindkraftverk

Today?s wind power plants are only compensated for their reactive power consumption at no-load. As the wind power plants grow bigger the amount of reactive power they need also increases. This is no longer a problem that can be ignored, especially as the net owners are beginning to charge the reactive power they transport.In this thesis a couple of different methods of compensation and their prices will be discussed and evaluated. Problems, such as self-excitation, that can occur if one fully compensates the wind power plant will also be brought to surface.

RA Detect - Antikollisionsskydd förlantbrukssektorn

SecRePac is a household appliance that simplifies sorting of packaging such as milk, juice and yogurt containers. By shredding the packages SecRePac reduces its volume uptake both in the home and at the recycling station. This leads to minimization of both transports to the recycling stations and truck transport for emptying the containers at the recycling station.The greenhouse effect deteriorates and becomes worse and worse leading to extreme climate changes and natural disasters such as floods as an example. Carbon dioxide emissions are the major reason for this and at least 30 percent of all these emissions come directly from transports. In the EU carbon emissions has decreased in the past few years.

Kostnadseffektiv minskning av koldioxidutsläpp från tunga fordon i Sverige :

When the emissions from the diesel trucks today accounts for a large part of the total emissions from the road traffic, the trend with a more extensive use of diesel trucks for transportation will therefore lead to increasing carbondioxide emissions to the atmosphere. Because of the fact that technical progress in the form of optimized engines and shifts in the means of transport sometimes result in even greater emission levels, other solutions to this problem must be studied to decrease the emissions of carbondioxide from the diesel trucks. The purpose of the thesis is to show how a decrease of the carbondioxide emissions from diesel trucks in Sweden can be achieved in a costeffective way by the use of a carbondioxide tax and a differentiated vehicle tax. The method used in order to fullfill the purpose of the thesis is studies of literature, mainly of public government reports. Literature of enviromental economics will be used to show the need of a tax and how to determine the dynamic effective carbondioxide tax in steady-state.

Fine-Mapping of Equine Multiple Congenital Ocular Anomalies on horse chromosome 6

Multiple Congenital Ocular Anomalities (MCOA) is a genetic disease that affects primarily Silver coloured horses of breeds such as the Rocky and Kentucky mountain horses. In these breeds the Silver dapple colour is very popular leading to an increase of affected horses. The major feature of the disease is ocular cysts of variable size. Large cysts also lead to a variety of secondary syndromes, for example retinal detachment. In previous studies the locus for MCOA has been mapped to an interval of 420 kb on equine chromosome six.

Förbättring av dockning mellan lastvagn och autoklav

At present Getinge can offer a new generation of trolleys that they produced in 2011. The trolley used to Getinge various autoclaves and has the primary task to help the user/sterilization personnel to transport shelves or baskets, with or without cargo, from a packing table to the autoclave. The purpose of this thesis has been to develop a primary solution how the docking process between Getinge trolleys and autoclaves can be improved. The work has in most part followed Fredy Olsson principle and primary construction method. The work has included product research, study visit and development of a requirements specification, to satisfy Getinge, their clients and circumvention products requirements.

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