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491 Uppsatser om Road bridge - Sida 12 av 33
Aktivering av trafiksäkerhetskameror : En studie av kameraaktiveringens effekter på fordonshastigheter i Sverige
During 2006 an estimated number of 150 persons are supposed to have been killed in road accidents caused by speed limit violations. Through Automatic traffic security control (ATK) the Swedish road administration (Vägverket) is working towards lowering the number of speed related accidents. By placing the speed cameras on roads they've managed to lower the average speed at those places. The enlargement of the number of speed cameras is based upon knowledge about for example how high the risk is for speed related accidents on the roads. The speed cameras always measure the speed in which every vehicle passes, but aren't constantly activated to register speed violations.
Integrerat brounderhåll
Trafikverket ansvarar för det statliga vägnätet i Sverige. Vägnätet består av cirka15 500 broar som ständigt utsätts för olika former av nedbrytning. Broarnabehöver därför underhållas med jämna mellanrum både för att hålla broarna i ettbra skick och för att motverka att nedbrytningen påskyndas.Under de senare åren har Trafikverket utformat en ny upphandlingsmetod avbrounderhåll. Den går ut på att allt brounderhåll för en region paketeras, i ett s.k.brounderhållspaket, som en entreprenör sköter i en femårig period. Ibrounderhållspaketen ingår förebyggande underhåll, avhjälpande underhåll ochakut underhåll.Syftet med det här arbetet är att följa upp den nya formen att upphandlabrounderhåll i paket.
Analysis of eucalyptus plantations on the Iberian Peninsula
This thesis analyses the prerequisites, profitability and competitiveness of eucalyptus plantation on the Iberian Peninsula and in Brazil. The thesis has a macro perspective and analyses a typical hectare of eucalyptus in each studied region.
A survey methodology was used as a strategy to cover a broad perspective using expert respondents.
The regions studied on the Iberian Peninsula were the ones found suitable for eucalyptus plantations from an economic point of view. The studied regions were Huelva in the South West of Spain, Galicia in the North West of Spain and Portugal.
Utvärdering av CTI på virkesfordon : ? CTI-projekt Holmen Skog/Örnfrakt 2005-2006
The low bearing capacity of roads during the spring thaw and periods in the autumn leads every year to increases costs for Holmen Skog. To reduce costs and increase accessibility
Holmen Skog decided to install and test a CTI-system. Central tire inflation (CTI) is a system that makes it possible to monitor and vary a vehicle?s tire inflation pressures from the cabin, while the vehicle is in motion. When tire pressures are reduced, the area of the contact surface between the tire and the road increases, thus reducing the ground pressure.
The purpose of this study was to evaluate the CTI-equipped vehicle and analyze if the CTI technology is economical defensible during the thaw 2005.
Kostnader vid gallring med flerträdshanterande aggregat, från skog till industri
Profit in first commercial thinnings of today is hard to achieve. This is because of prevailing pulpwood prices and because of high costs of logging and transport. To reduce these costs higher productivity is advocated. One way to increase the productivity is the use of multi-tree handling harvester heads. The aim of this study was to calculate logging and transport costs in first thinnings, where multi-tree handling has been used.
En studie i hur järnvägens möjligheter kan appliceras inom AB Volvo : med hänsyn tagen till företagets logistikkrav
In the year of 2011, the new CEO of AB Volvo announced a major reorganization. This reorganization was a contributing factor to the start-up of this thesis.Volvo Group Logistics Services (VGLS) is Volvo Group?s global logistics partner, which designs, manages and optimizes all of the group's incoming and outgoing logistics flows. With the reorganization, VGLS started a project regarding responsibilities around railway flows. Within the project a demand to collect logistics requirements occurred.
5 minuter till Luleå : en visuell studie av en stadsinfart
SUMMARYThe demands on the public environment are big and in particular on the environment of communication which we spend a lot of time in on our way to work, school etc. The city-approach is a road section that leads from the periphery of the city to the centre of the city, often through boring and meaningless industrial areas that displays the back side of the city to the voyager on the city-approach. The intentions of this thesis in landscape architecture has been to study one of the two city-approaches to the city of Luleå, the close surroundings and contextual position in the city and not at least give suggestions of ways how the city-approach can be changed, clarified and improved. The study of the city-approach has been made by studying literature that concern city-approaches and the architecture of roads in general. Studies of different analysis methods has been made to find appropriate approaches to work with the specific study of the city-approach to Luleå.
Visuell informationshantering i tunga fordon : Behovsanalys och förslag till förbättringsåtgärder
The flow of information in road vehicles intensifies as new techniques develop. Informationsources such as cell phones, navigation equipment and radios demand the driver?s attentionwhile he or she must stay focused on the road to perform a safe driving. Today the visualinformation inside the vehicle is mostly located on the dashboard, which forces the driver tolook down when shifting attention between the environment outside and the informationinside the vehicle. One way to avoid this is to useHead-up Display (HUD), a technique thatprojects information in the visual field of the user.This master thesis has been performed in cooperation with Scania CV AB, a world leadingtruck producer.
Markering och risning av basvägar inom slutavverkningstrakter : en intervjustudie hos maskinförare och planerare
In an attempt to prevent ground damage and to reduce harvesting costs, StoraEnso's districts Värmbodal and Fryken, selected a number of final felling areas where the base roads have been marked by planners in the districts. The parties involved in the experiment are mainly planners, harvester operators and forwarder operators. The purpose of this paper is to determine the findings of this trial and to find cost savings or lost revenue. This has been done with a sample of interviews from the involved parties who logged the chosen felling areas. Literature about the interview process has been used to facilitate data collection, interpretation and analysis of the material.
If we look at profitability based on assumed income and expenditure, revenue per MWh would be 63 SEK.
Prolog, Klimax och Katastrof : en återfallsförbrytares upplevelser och tankar om kriminalitet ur ett tidsperspektiv
The goal of this qualitative essay is to approach the knowledge of people who commit crimes. From a development psychology point of view, questions relating to childhood ang growth are some of the important subjects we choose to discuss. Our purpose is also to reveal the linkage between criminal behavior and different theories of the above mentioned perspective. To bridge the gap between the general and the individual, our survey was based on profound interviews with four inmates in prison. This offer an opportunity to capture the individual´s inner thoughts, feelings and experience about the criminal action.
Artrika vägkanter - hur påverkas de av slåtter och underhållsdikning?
ABSTRACT
This study is an exam work at the Department of Ecology at the Swedish Agricultural University, Ultuna, Uppsala. The field work was performed in the counties of Uppsala and Västmanland.
Grassland areas, exposed to annual mowing, are known to host a variety of rare and red-listed vascular species. The area of these grassland are, however, decreasing in the landscape due to modern farming. The fact that roadside verges maintain regular mowing has proven to be a successful concept for many rare vascular plant species in this habitat.
Vascular plants along roadside verges at the State road network were inventoried due to a government mandate during 1995 and 1996. As a result ?Species rich roadsides? were pointed out.
Konstruktion av pipelinebro i Charagua, Bolivia
Guazuigua is a small village in Bolivia, which has had too small water resources, especially for irrigation. A project started after some studies were made, to create a canal to provide the village with water from a nearby town. To make the canal work it had to cross a dried out river. There have been several attempts to cross these dried out rivers, but with poor results. The purpose of the report is to provide a solution for this problem.
Biblioteket som en väg in i det svenska samhället ? En textanalys av styrdokument på Malmö, Stockholm och Umeå bibliotek
This thesis is about how the library can help immigrants integrate into theswedish society. By studying leading documents of the libraries in Malmö,Stockholm and Umeå in search for how the relate to work consideringimmigrants and integration I have studied the library as a bridge betweenbeing included and excluded in the society. The thought is that the libraryopens the door to new worlds both for immigrants and born swedes toobtain knowledge about a culture different from their own.In my thesis I reached the conclusion that library on a day to day basisworks with the integrationprocess for immigrants. Although the leadingdocuments should evolve since they show gaps and seem somewhatmisguiding in their presentation of the libraries function. The librariesshould work more with analysis of the environment that they are active in sothat they are more individualized for the people around it.
Upplevelser av fysisk aktivitet i ett slättlandskap :
Title: Experiences of physical activity in a flat country
Regular physical activity provides many chronic diseases and is an important contributor to health promotion. According to Swedish goals for public health, community planning ought to provide opportunities for exercise in all groups of the population and exercise in daily life should be uncomplicated, even in rural areas. The purpose of this study was to explore how individuals living in a flat country experienced their opportunities for exercise on a regular basis. Four semi-structured interviews were carried out with a phenomenological approach and for the analysis a phenomenological-hermeneutic method was used, resulting in two main themes and nine sub themes. The first main theme ?The reciprocal relation between physical activity and the landscape? showed that the informants experienced that they had good opportunities in the landscape for physical activity, it was easy to exercise on a regular basis, provided there was motivation.
Fördelning av en kostnad utifrån olika rättviseteorier :
The increasing road traffic in Sweden will require investments in the infrastructure that the tax withdrawal of today will not allow according to a new government report, SOU 2006:33. An existing willingness to pay for those investments has therefore become an alternative to increases in taxation to be able to cover the costs. A proposal to let the willingness to pay, alternatively increases in taxation that act proportional, decide how a cost is distributed can be said to be related, but not fully correspond, with different theories of justice described by Robert Nozick and John Rawls. It can therefore be interesting to see how the two different theories of justice are edified and how they distribute a joint cost. The aim of the first part of the thesis is to present and criticize Rawls' and Nozick's theories of justice in a common formulated economic model.