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3413 Uppsatser om Road transport technology - Sida 43 av 228
Lärares syn på teknikämnet. : En enkätstudie av pedagogers tankar kring teknik på mellanstadiet
Syftet med denna studie är att få en inblick i hur lärare på mellanstadiet arbetar med teknikämnet i skolan. Detta görs genom en enkät, vars frågor är upplagda efter tre frågeställningar: Vilka tankar har lärarna om teknik? Hur ser pedagogernas teknikundervisning ut? Vilket undervisningsmaterial använder lärarna sig av i teknikämnet? Totalt är det 65 lärare som arbetar eller har arbetat med teknik på mellanstadiet som deltagit i studien. Enkäten har visat på att de flesta lärarna som deltagit tycker att teknikämnet är ett roligt, spännande och intressant ämne som dock är svår bedömt, tids- och materialkrävande. Undersökningen visar även att de flesta lärarna tycker det är bäst att arbeta med teori och praktik varvat, då båda delarna behövs för att eleverna skall förstå teknikens innebörd i samhället.
Modelering av Wideband : Code Division Multiple Access
Today wireless transmission of data is becoming more and more popular and the need for faster transmission rates is increasing. Since the bandwidth is limited it is important to try to use it to the fullest. CDMA is a technology that allows multiple accesses on the same frequency and time thus making it very bandwidth efficient. The CDMA technology was first introduced in the second generation?s cellular systems but has since then been improved and is reused in today?s 3G systems as Wideband CDMA.
Automatiskt avvägningssystem för obemannad undervattensfarkost
This master thesis work was done at Saab Underwater Systems AB, a company at the cutting edge of underwater technology. Here torpedoes and other underwater vehicles are developed and manufactured. The major customers are navies of different countries, mostly the Swedish navy. The aim of this master thesis is to develop, construct and evaluate an automatic Trim System for Unmanned Underwater Vehicles. The task of the system is to change the position of the centre of mass and the vehicle?s total mass or volume.
Den trådlösa massan - svärmbeteende och kollektiv handling
This essay seeks to analyze the consequences of modern information and communication technology for collective action within the framework of social movements. With references to the protests in Seattle 1999, the essay argues that the emergence of distributed collective action is closely related to the use of technology, for example cell phones and Internet. This distributed collective action can be characterized by its decentralized and self-organizing features, forming a global pattern emerging from local interactions. Whereas contemporary theories of collective action can be ´stretched´ to fit these aspects, they lack analytical tools to describe and analyze such systems. Further, their rejection of classical crowd theory is problematic, since it contains valuable insights.
Athena - En intelligent och flexibel säkerhetslösning för transportbranschen
The project team has chosen to carry out the project itself. This is to be able to work more flexibly in the product development process and not be guided by some guidelines.Every day, we read in the media about a new truck burglary. The problem has become so common that we do not even notice it in the media. Each year the theft of 1 billion of Sweden and the entire 82 billion in Europe in 2008. This is an increase of 10 billion by 2007.
Wireless Fidelity - A Scenario Analysis
AbstractTitle: Wireless Fidelity ? A Scenario Analysis Authors: Mellberg Ola, Technology Management, Lund UniversityMårtensson Jens, Technology Management, Lund University Tutors: Andersson Jens A, Faculty of Engineering LTHKarlberg Johan, Sony Ericsson Mobile Communication ABSvensson Claes, Lund University Discussion: The most significant impacts on the telecom industry over the past decades have been the rapid growth of the Internet and mobile telephone services. Currently these two worlds are converging. Moreover, the fast expansion of wireless high capacity Internet access, increased distribution of local/public hotspots and rapid development of wireless network cards have opened new opportunities for the mobile telecom industry. Research Questions:To what extent could the explosion of local and public wireless networks, using WiFi technology, affect the future telecom industry? Who will ultimately master the WiFi innovation and to what degree could this innovation open new possibilities for external players to enter the mobile voice industry? Purpose: The purpose of the Master Thesis is to provide Sony Ericsson Mobile Communication AB with the most transformational scenarios, which will enable employees to recognise patterns and interpret the meaning of WiFi-related events as they unfold.
Experimentell undersökning av provkroppar för trälimfogar
This thesis engages the topic of test methods for wood adhesives. Two test methods were evaluated, EN 302-1, a European standard, and ASTM D905, an American standard. The total amount of specimens manufactured and tested was more than 500. The adhesive bonds were tested in shear with an increasing load on the specimen until failure.The adhesives used were epoxy-resin, phenol-resorcinol-formaldehyde and a 2-K polyurethane. The test programme included five different types of intentional errors per method, in order to investigate the sensitivity of the test methods.
Transport av häst til ny miljö och dess påverkan på ett kombinerat glukos- och insulintoleranstest
Detta arbete behandlar kalvhälsa och då fokuserat på uppfödning i kalvhyddor, vilka står utomhus. Arbetet innefattar en litteraturstudie samt studiebesök på olika gårdar i Skåne med kalvhyddor som inhysningssystem till sina kalvar. Lantbrukarna intervjuades om vad de tyckte var deras kalvhyddors för- och nackdelar. Även olika fabrikat av kalvhyddor beskrivs..
Accessoarer för framtidens kontor
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.
Minskad kapitalbindning genom effektivare lagerstyrning
Bakgrunden till detta arbete har varit att, på uppdrag av Green Cargo Road&Logistics, finna möjligheter att sänka kapitalbindningen vid Goodyears nordenlager i Norrköping. Lageromsättningshastigheten är i nuläget inte tillfredställande och även en generell minskning av lagernivåerna är önskvärd. En nulägesanalys har genomförts medelst intervjuer och studiebesök. Därefter har en grundlig litteraturstudie och en detaljstudie av ett urval artiklar i lagersystemet utförts. Utifrån dessa båda studier samt utförd problemanalys rekommenderas ett antal förslag på förbättringsåtgärder.
Smarta Hus: Nya behov och lösningar med participativ design
In this Bachelor Thesis (20 p.), we present the history and development of
"Intelligent Houses", and most important- explore some of the future
possibilities in this area.
The project has been carried out through an interdisciplinary cooperation
between three different educations at the Blekinge Institute of Technology.
By conducting a dialogue with various actors with different professions, we
have been trying to identify needs within the concept of "Intelligent Houses",
were the end user is not only the tenant or homeowner.
Through Participatory Design methods, such as a Future Workshop, we have
brought the users together to discuss their own and each others needs and
hindrances in their respective work practice, and how intelligent house
technology could improve their work conditions.
We have also been testing a highly sophisticated
CO/CO2/Moisture/Temperature/Enthalpy multi-sensor & controller, originally
developed for regulating indoor climate systems.
Based on the needs we have found in our fieldwork, we have been looking at
possibilities to make multi user solutions with the sensor..
Invandrarungdomar utan sysselsättning : en studie av arbetslösa invandrarungdomars attityd gentemot sig själva och den svenska arbetsmarknaden
The purpose of this study was to increase knowledge about what the lives of the unemployed youth of immigrant background looks like, and what the views of the unemployed young people are about work and employment. The study is a qualitative study where the empirical material is based on interviews with seven unemployed immigrant youth between the ages of 19 and 25 years. A study where the central questions was to explore how the informants' living conditions and identity are affected by being unemployed. The other issues aimed at how informants background affected their ability to enter the labour market, and the job expectations the informants had about the future and the Swedish labour market. Empirin have been analyzed with regard to methodology tool based theory, as well as theoretical starting points, such as social capital, formal and informal channels, ethnicity and stigma theory.
Viltanpassad röjning längs skogsbilvägar som en foderskapande åtgärd för älgen
The moose is a keystone species in the boreal forest ecosystem, but the dense Swedish population do cause some serious problems. From a forestry perspective, their browsing on young Scot pine (Pinus sylvestris) causes extensive losses of revenue. Adjusting the cleaning along roadsides of low trafficked forest roads can favour the production of plant species preferred by the moose. This is thought to redirect the moose´s browsing to the roadsides and thereby decrease the damages on commercial forest.The aim of this study has been to present a first evaluation of the vegetation in roadsides, one year after wildlife-adapted roadside clearing has been undertaken. In the wildlifeadapted clearing operation, the roadside was widened by removal of some trees in the forest edge whereupon a complementary clearing with a conventional chain flail was conducted.
Avsättningsmöjligheter för slaggrus från avfallsförbränning vid Åmotfors Energi
The incineration of waste is steadily increasing in Sweden and so is the production ofashes. The bottom ash has for many years been used as construction material inlandfills. Now many of the nation's landfills are closed and there is a great need to findanother beneficial use for the ash. Bottom ash is a gravel-like material and with itsmaterial properties it can replace natural gravel in parts of roads and surfaceconstructions. Today this use is only approved within landfill areas where leachate iscollected and checked.
Fr?n m?nniska till maskin. Rekryterares ?vers?ttning av AI
As artificial intelligence (AI) has gained more influence in recruitment, both recruitment processes and the role of the recruiter are changing. This study aims to describe and analyze how recruiters translate, use, and relate to AI in their work. Through a qualitative method based on semi-structured interviews and document analysis, the study explores recruiters? experiences, attitudes, as well as perceived obstacles and opportunities regarding the use of AI in recruitment. With a theoretical foundation in translation theory, fashion, and imitation, the study examines how AI is not only followed as a trend, but also shaped and adapted locally through translation, depending on organizational identity and needs.