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3413 Uppsatser om Road transport technology - Sida 18 av 228
Förändrad aptering av massaved från 3- till 4-meterslängder vid gallring inom Södra : en systemanalys av effekter från avverkning till levererad virkesråvara
The costs of logging and of transportation with truck are dominating the total cost of wood delivered at industry. To support the profitability for the members' forestry the processing and handling with the timber has to be as efficient as possible. Increased length of pulpwood in thinning is one conduct that can result in higher productivity and/or lower costs. The study is scaled as a system analysis with the aim to exemplify the differences between working with 3- and 4-meter as standard length of pulpwood, related to biological aspects, timber receipts, cost of logging and cost of transportation with truck. Important aspects are if the change is technically and biologically feasible and economically profitable.
Funktionsentreprenader inom Järnväg - möjligheter och hinder
The transformation within the swedish infrastructure has been a slow process from thebeginning of time. For almost a decade, the traditional form of contracting regardingbuildings and foremost infrastructure has evolved contracting involving the owner to definethe outcome of the product, regardless involvement from the supposed contractor. As forthe swedish market, the traditional design-bid-build (DBB) have been the primary choice ofcontracting. Although changes have been made over time regarding contracting formswithin the road administration, the railway sector has not improved or justified changesregarding choice of contracting, they have conducted same contracting relationshipsbetween them and the contractor.This bachelor thesis, conducted at the Swedish railway administration with supervision ofprofessor Kristian Widén at Lunds University, explores the forces behind the new era ofcontracting within the railway administration. This bachelor thesis focuses mainly oncontracting regarding design-build-operate-main (DBOM), the new contracting formulabetween the owner and the contractor.
VoIP Revolution - strategies to survive the future of telecom
This essay is a study of the market strategies and situations in the telephone business. Our problem was to examine the telecom companies´ strategies to stay competitive and cope with the new VoIP technology. We chose to do a qualitative study and four telephone interviews were made with Swedish and Dutch companies. We investigated three different categories of companies in the market; industry leaders, cable companies and broadband companies to get a broad view of the market. The theory chapter is based on different strategies that companies have to or can apply to get ahead, stay or survive in a hypercompetition.
Adaptiv katalysatormodell för reglering
This master?s thesis describes the development of a model of the catalystsystem aiming at control by an MPC. A well functioning model, which is suitable in control purpose, is important while emission legislation become more and more hard to fulfill for the car manufacturers. Much research has been done in the field of physical modeling of the system, but in this work a linear adaptive time discrete ARX-model is developed and validated.The systems tendency to change its dynamic during usage implies that the model must be adaptive. The developed model proved to be well functioning and shows promising conditions for the MPC design.
Transportkvalitetshöjande åtgärder : en fallstudie vid GP-Last
This thesis has been done on a haulage contractor company named GP-Last (AB Gustav Perssons Åkeri) and the purpose with the paper was to analyse their traffic from Malmö to Stockholm and leave suggestions on efforts that GP-Last can use to increase their level of transportation quality. This has been done with two main questions, which problem do they have today and which efforts they need to do to solve their problems? Through a case study with interviews as method to collect data it showed that GP-Last had four main problems. Not enough information about their freights. The transport planning unit in Malmö doesn?t have the exact delivery address when GP-Last begins to bring in the gods. There are no clear routes.
Utveckling av Mätmetoder för Färdmotstånd
The student project Elba at KTH started in 2011 and is a project where a battery driven prototype car is developed. The vehicle competes in Eco Shell Marathon in Rotterdam, Holland. In this competition the vehicle that travels a certain distance including several starts and stops with the lowest energy consumption wins. To minimize the consumption is therefore very important, which requires knowledge of the vehicles energy losses.A vehicle's energy losses depends on several factors and can be divided into the powertrain efficiency and the driving resistance. The driving resistance can then be divided in to rolling and air resistance, if smaller losses like vibrations are ignored.
Aktivitetsbaserade kontor : En studie kring hur Vasakronan implementerat det aktivitetsbaserade kontoret och arbetssättet
Partnering is a collaboration method where the contractor and the client work together, based on a mutual trust towards each other and with a common goal for the project. The method originates from the United States where it was early adapted by the U.S. Army Corps of Engineers. It later spread internationally where the United Kingdom and Denmark were early in Europe to see the potential with partnering, to help aid with the issues they were having where construction projects kept running late, going over budget and lacked in quality. By using partnering you can achieve a shorter building time, improved work relationships and enhanced efficiency and cost effectiveness.
BIM på Trafikverket : Förslag till en utvidgad investeringsprocess
2013 a decision was made that all projects at the Swedish Transport Administration shoulduse BIM (Building Information Modeling) to some extent from 2015. BIM is an approachthat allows for streamlining of projects by the use of a 3D-model created in an early stage ofthe project. The 3D-model can carry information about the facility throughout its life cyclefrom planning to management. The use of a 3D-model can help the project to detect errors inearly stages of the project when it is easy and cheap to fix the error instead of finding theerror in the construction phase when it is costly and time consuming to fix it. 3D-models alsolead to improved communication both within the project groups and with the public.
"Jaha, det gick ju bra den här gången också" : En kvalitativ undersökning av seniorers förhållande till e-handel
In this paper we have examined why seniors do not use e-business to the same extent as other age groups. Seniors belong to the age group that, according to statistics from Statistics Sweden (SCB) in 2011, utilizes e-business the least in relation to the number who use the internet. To understand how seniors reason and perceive the possibility to shop on the internet, we have conducted four interviews with people from 65 years and older. We have let the respondents answer questions regarding utility aspects, e-business interfaces, general shopping habits, risks, and whether or not they usually shop online. We also found out how seniors reason when they sell products and services.
Intensivvårdssjuksköterskors erfarenheter av att vårda kritiskt sjuka personer inom flygmedicinsk transport.
Syftet med studien var att beskriva specialistsjuksköterskors erfarenheter av att vårda kritiskt sjuka personer inom flygmedicinsk transport. Totalt intervjuades sju intensivvårdssjuksköterskor vid två sjukhus med helikopterverksamhet knutna till sig. En kvalitativ tematisk innehållsanalys utfördes på intervjuerna och resulterade i ett tema och sex kategorier. Temat som framkom var Säker intensivvård under flygmedicinsk transport. Kategorierna som framkom var Att egen erfarenhet och teamsamarbete behövs i svåra situationer, Att ställas inför dilemmat om närstående kan närvara eller ej, Att känna patientens och egen rädsla, Att uppleva vårdmiljön som en intensivvårdsplats med begränsat utrymme, Att en högljudd miljö försvårar kommunikationen under pågående flygtransport, Att planera och kontrollera för att minimera risker.
Profileringsarbete för jämställdhet inom IT-organisationer
During our formative years, technology has always had a natural part of everyday life, and for us technology has never been particularly gendered. If this depends on the climate and the attitude of our homes, ourselves, the combination of both or something completely different is a question we have asked ourselves at times. But our approach to technology does not seem as obvious to all women, and today the IT industry is heavily dominated by men. This has meant that we have asked the question whether there is any underlying reason why so few women opt for IT courses? Is there a link between how different IT organizations profiles and the prevailing gender ratio? The purpose of this study is to investigate whether there is any connections between how IT organizations are related to gender issues and how the structures, attitudes and gender actually looks like in the IT industry today, and how this can be seen in their branding efforts.
Förbättringsförslag pådaglig styrning
The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road.
Energieffektivisering av linjesjöfarten till och från Tasmanien
Tasmania is a state in Australia, and is also the country?s largest island. It is separated from the main land by a 429 kilometer wide strait. Every year, a large amount of people, cars and goods are transported to the island using a government owned ferry line, which generates approximately 300 million Australian dollars to the state?s economy ,every year. This bachelor thesis investigates the possibility of reducing the fuel consumption for the ferry traffic to and from Tasmania, which would also reduce the overall cost.
Hur tar du dig till skolan? : En kvantitativ studie om elevers transportvanor till skolan
Syfte och frågeställningar:Syftet med studien är att kartlägga skolelevers transporter på en skola i en stödjande miljö.- Hur stor andel av eleverna använder aktiv transport?- Vilka faktorer påverkar de elever som inte använder aktiv transport till och från skolani en stödjande miljö?Metod:Studien genomfördes med en enkätundersökning som delades ut till sammanlagt 63 av 75 eleveri årskurs fyra på en skola i en söderförort till Stockholm. Det externa bortfallet bestod av deelever som av någon anledning inte var i skolan på undersökningsdagen. Skolan ligger i enstödjande miljö för fysik aktivitet. En pilotundersökning genomfördes på ca 60 elever i årskursfem där synpunkter kunde lyftas fram och enkäten reviderades innan den slutligaundersökningen.Resultat:50/63 elever använde någon form av aktiv transport till skolan.
Notes Towards a Mental Breakdown : det teknologiska traumat i J.G. Ballards The Atrocity Exhibition
This study examinates technology's traumatic impact on the male subject in The Atrocity Exhibition by J.G. Ballard. In my analysis I show how the protagonist uses a fetischistic strategy in order to make sense of the trauma that technology embeds. Paradoxically it proves to be the agent of his trauma, but also functions as his shield. The machine is thus in a position of the hinge, the point in a structural system that both enables and deconstruct the system.