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394 Uppsatser om Electric vehicles - Sida 18 av 27

Att lära sig är att spela : En intervjustudie av elbaslärares val av innehåll i nybörjarundervisning

Syftet med studien är att i relation till musik- och kulturskolornas verksamhetsidéer/planer få insikt i elbaslärares förhållningssätt till vad som är viktigt för nybörjarelever att lära sig. Utifrån detta syfte är avsikten att försöka förstå vilka lektionsmoment elbaslärare prioriterar i sin undervisning av nybörjarelever, varför de valt att fokusera på just dessa och deras syn på eventuella styrdokument för respektive arbetsplats. Jag har i min undersökning genomfört kvalitativa intervjuer med fyra elbaslärare från olika musik- och kulturskolor. Arbetets har sin utgångspunkt i historiska perspektiv på musikkulturskolornas framväxt och de pedagogiska traditioner som format dem samt det sociokulturella perspektivet på lärande. I resultatet framkommer att det viktigaste för informanterna är att eleven får komma igång och spela så snabbt som möjligt och att den huvudsakliga drivkraften i nybörjarundervisning för elbaselever är lust, glädje och upplevelser ? vilket går helt i linje med mycket av de tendenser som behandlas i forskning rörande musik- och kulturskolan samt dess verksamhetsplaner under senare år. Under diskussionsrubriken diskuteras informanternas syn på vad de tycker är viktigt för nybörjarelever att lära sig i relation till de traditioner, idéer och värderingar som enligt det sociokulturella perspektivet styr hur undervisningen formas.

Driftoptimering av torkmaskin : Driftoptimering av torkmaskin 3 vid Billerudkorsnäs Karlsborg AB

The company Olofsfors AB manufactures drive belts for forest machinery, known as ECO-Tracks, and abrasion-resistant steel and cutting edges for graders, excavators and tractors, known as Bruxite and SharqEdges. Manufacturing these products requires the steel to be heated and molded, then submerged in water and hardened. The water used in the hardening of steel is pumped to the process from pits below the floor and then pumped back to the pit after it?s been used. Since the temperature of this water rises after being used to harden the steel the temperature of the pumping pit needs to be adjusted to maintain its setpoint of 21°C.

Utrustning för automatmontering av ackumulator

This report deals with an exam report written by Olle Hjalmarsson and Thomas Likar, students at Högskolan i Halmstad. The project was carried out for Haldex Traction AB in Landskrona whose business consist of manufacturing automatic all wheel drive systems (AWD-system). These systems consist of a plate clutch which activates all four wheels of a 4-wheel driven vehicle. An important component in these clutches is the accumulator which basically consists of a piston under the load of a spring which creates an oil pressure with the help of an electric motor used for actuating the clutch.At Haldex difficulties has been experienced regarding the assembly of the accumulator parts due to the small tolerances between the piston and the hole of the accumulator in the cast aluminium housing. Attempts have been made to assemble the parts in existing robot cells.

Evaluation of RCM implementation process in Vattenfall
Service and Vattenfall, Hydropower organizations: a study and
analysis of its current status

Vattenfall AB is a large producer of electric energy where approximately half of the energy comes from hydropower. Vattenfall Hydropower has got almost a 100-year old history and the company has developed a lot since 1909. After that the number of power plants increased and the competition got more intense, there were higher demands on the reliability. One way to secure the reliability with a good satisfaction at the power plants is to implement a maintenance method named Reliability-Centred Maintenance. RCM is a result of the introduction of the complex aeroplane Boeing 747 in the 1960?s.

Utveckling av nytt koncept till processmaskin

Metso Paper offers a front-running range of solutions and services for the pulp and paper industry. At the baling unit, design solutions are developed for manufacturing and handling of pulp bales. The machines are continuously developed to satisfy customer needs. One big step in the development of the baling line was to remove hydraulics from the machines and replace it with electrical motors and pneumatics. This was not done on the folding machine which is still driven by mainly hydraulics.

Marknadsundersökning: Lämpliga flygplan med avseende på start- och landningssträckor för Bunge flygfält

In many products a compromise between ground clearance and the required space to store the product has to be made. This problem attracted the attention of the authors of this thesis.The objective of this project is to develop a functioning solution to a foldable wheel. The solution should be applicable to several types of product groups. A limitation for this work has been made so that the work only covers solutions for lighter vehicles.The purpose is to drive this project forward, so that a solution can be found. Furthermore the purpose of the report is to clarify how the authors proceeded to design and construct the wheel according to a fixed specification.

Beräkning av värmeförluster och energieffektivisering av elbussar

The ?civilized? world is in need of fossil fuel in order to function. Hybricon AB is a company in Umeå that is developing a technology that hopefully can reduce parts of this need. They are currently testing their two electrical busses (with Hybrid backup) in city traffic on the roads of Umeå in cooperation with the county of Umeå.                               The busses are originally diesel-busses, but the diesel motor has been replaced with two electrical hub-motors with a power of 145 kW each that are powered by batteries.The batteries are charged at the end station after each route. In case the batteries should run low on capacity during driving, they can be recharged by the so called genset.

Torrefaction of biomass : a comparative and kinetic study of thermal decomposition for Norway spruce stump, poplar and fuel tree chips

Stump biomass is energy rich and stump harvesting for use as fuel become more and more interesting in Sweden. Swedish Forest Agency (2009) has estimated that stump harvesting in Sweden would respond to an annual energy supply of 57 TWh/year. However, stump has not been recognized as a bioenergy resource in Sweden. Suitable methods for pre-treatment of stump are probably of great importance to make it accepted as fuel. It is therefore rewarding to carry out an investigation in this area for stump. This report represents results from a diploma project, which was aimed to develop a fixed bed reactor for experimental study of biomass torrefaction, followed by TG analysis and kinetic modelling employing Ozawa method and different kinetic models including one-step and three-pseudo-component models.

Hur låter det? : Elgitarrlärares syn på att undervisa i sound och utrustning

Föreliggande uppsats har som syfte att ta reda på vilken syn elgitarrlärare på estetiska gymnasieprogram har kring förmedling av sound och utrustning och vilka metoder de tillämpar för att lyfta fram dessa moment i sin undervisning. Sound kan definieras på många sätt, men i detta arbete har det en innebörd av vilka klanger som olika instrument, förstärkare och diverse hjälpmedel kan producera. Målet är att ge nuvarande och blivande instrumentpedagoger en inblick i hur elgitarrlärare arbetar med dessa moment i undervisningen idag. Förhoppningen är även att studien ska kunna ge inspiration till att utveckla metoder och finna redskap som hjälper elever att skapa ett eget sound. Datamaterialet består av intervjuer med fem elgitarrlärare samt observationer av tre av dessa lärares gitarrlektioner.

Utvärdering av möjligheten att tillvarata energi ur processvatten : En undersökning gjort vid Olofsfors AB på uppdrag av UMIA AB.

The company Olofsfors AB manufactures drive belts for forest machinery, known as ECO-Tracks, and abrasion-resistant steel and cutting edges for graders, excavators and tractors, known as Bruxite and SharqEdges. Manufacturing these products requires the steel to be heated and molded, then submerged in water and hardened. The water used in the hardening of steel is pumped to the process from pits below the floor and then pumped back to the pit after it?s been used. Since the temperature of this water rises after being used to harden the steel the temperature of the pumping pit needs to be adjusted to maintain its setpoint of 21°C.

Tillförlitlighet i Stockholms elnät : En analys med hjälp av Tekla NIS

Outages in the electric grid can be costly for society. Because of this, reliability is one of the parameters used to regulate network companies. Reliability in electrical grids can be measured with SAIDI, system average interruption duration index, which for Fortum Distribution has increased in Stockholm?s distribution network (11 kV) in the early 2000?s.By using outage data for Stockholm from 2011-2013, sets of parameters to be used for reliability calculations in the network information program Tekla NIS were derived. Two different options for investment were then analysed: changing old cables with high fault frequencies, and installing automatic switching in distribution substations.

Konstruktion av testrigg för moderna ångexpandrar

This report summarize what have been done during the Master of Science Thesis that Klas Schjelderup has written for the company RANOTOR Utvecklings AB. The company is developing modern steam engines and this work should develop a machine to perform tests on a new type of piston seal that hopefully could be used in the future. The steam engines will be both volumetric and energy compact, around 1600hp/literof cylinder volume, and it will have a lot of practical applications.The new type of piston seal is hydrostatic lubricated which means that a fluid is separating two faces that normally is in contact. In this case pressurized water is used to separate the piston seal from the cylinder wall. RANOTOR have earlier formulated that at least the expander in the modern steam engine have to be oil-free, due to other components functionality in the closed water system.

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.

Globalization vs Localization : En fallsstudie om Scanias marknadsföringsstrategier i Sydamerika och Asien

Problem formulation? Are there any factors affecting the choice of marketing strategy?? What is it that determines the degree for the company to use a standardized or a adapt marketing strategy?? How profitable is Scania's marketing strategy in each country?Objective: The overall aim of this study is based on local adaptation and global standardization to compare the degree to which the company Scania chooses to adapt or standardize its marketing to the South American and Asian markets.We also aim to compare and describe any factors that affect the countries' differences in marketing strategies and to evaluate and measure the profitability of marketing strategies in each market.Methodology: The study is limited to Scania's marketing in the truck market in Argentina, Brazil, Malaysia and Singapore from 2006 to 2010. In order to answer the study's problem formulation and purpose we have chosen to combine a qualitative and quantitative approach. Four interviews were conducted with marketing executives from Argentina, Brazil, Malaysia / Singapore and Sweden. We have also chosen to examine Scania's annual report and include figures on the market shares of Scania in the respective countries and the number of sold Scania truck which is then compared against the number of registered vehicles by country.

Environmental impact assessment of energy recovery from food waste in Singapore : comparing biogas production to incineration

As a small and land scarce country, effective waste management is ofoutmost importance in Singapore. In this study the production of biogasthrough anaerobic digestion from the organic fraction of municipal solidwaste (OFMSW) was compared to incineration of the waste. At the momentalmost all of the OFMSW in Singapore is incinerated. Three differentscenarios were compared to the reference scenario (incineration): one with alarge scale biogas plant that can treat half of all OFMSW in Singapore, onewith a medium scale biogas plant about 15 times smaller than the large oneand one with a small scale biogas plant that can treat waste from e.g. ashopping center or a food center.By using life cycle assessment (LCA) the different scenarios were comparedin terms of global warming potential (GWP), acidification, eutrophication,energy use and land use.

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