This report examines the prerequisites for LEDs to replace other technologies indifferent applications. How does the different technologies for light generationwork and what are the advantages and disadvantages? The various technologieslimitations and characteristics provides the opportunities for the LEDs.This report describes a test-construction built to examine what practical arrangementscan be built with modern light emitting diodes, in order to showsome of the possibilities. The construction consists of three different applications,a high power lamp based on cold white LEDs, one based on warm whiteLEDs for the evaluation of the light characteristics and a RGB-LED based lampable to mix any colors quickly and seamlessly. The test construction also containsthe essential peripherals including control-electronics, optics and a custombuilt watercooling solution.The potential for LEDs is huge but it is complicated to build LED based applicationsdue to the limitations which mainly includes the electronics and theneccesary cooling.

Today?s environmental discussions have led to more progress in the different transportareas. To ride a bicycle is often one of the most efficient alternative when it comes totransport. An Electric bike is, and makes transportation more efficient than a regularbicycle. Electric bicycles do not affect the environment significantly and allows moreconvenient transportation than ordinary bicycles do.

Linux is a growing operating system in embedded systems. Today, Linux is not only in heavy servers but also in cell phones, PDAs, cameras and other devices running on battery power. While current technology is more energy efficient, more and more technologies are implemented into a single unit resulting in an overall increase of power consumption.Low power consumption is an increasingly important feature of a system today. Lower power consumption means lower costs, less environmental impact, and longer life for applications that runs on batteries.This work compiles methods to reduce power consumption of Linux systems. The work includes examining whether the available opportunities are platform-specific or of a more general nature.

Children with Reading and Writing Difficulties and Their Language and Cognitive AbilitiesA Comparison with Children with a Cochlear ImplantAbstractThe aim of this study was to examine the cognitive abilities that are important for reading in children with reading disabilities, children with a cochlear implantation and typically developed children. 64 children aged 10-12 years participated in the study. To answer the question at issue we used the following tests: Block Design from WISC III, PPVT III, TOWRE, SL 40 and a few chosen tests out of the SIPS battery. On tests of the lexical access children with reading disabilities performed at the same level as hearing children, while the children with a cochlear implant performed significantly lower. Test of the phonological and complex working memory showed that children with reading disabilities performed significantly higher than children with a cochlear implant, but at the same time lower than typically developed children on the test of phonological working memory.

It generally takes 10 to 12 years for a new drug to hit the market. The pharmaceutical industry invests huge sums in these early stages of research and development. In spite of the rapidly rising research and development expenditures fewer and fewer blockbuster drugs are being developed. Longer lead times and aggressive generic post-patent competition have narrowed the timeframe for the pharmaceutical companies to profit on their investments.In the face of these threats the pharmaceutical industry has developed a battery of strategies to prolong market exclusivity and to maximize return on investment. These emerging strategies are commonly known as Life cycle management (LCM), which actually is more of a concept than a method.

The teaching of modern foreign languages within Swedish educational system has been a subject of a number of alarming reports in recent years. Several studies have shown that students lack motivation to learn any language but English. Of particular concern is the young males? underachieving and disinterest in foreign languages. In the meantime, a number of international studies and the statistical data from Swedish national agencies of secondary and higher education (Skolverket and Högskoleverket) have indicated that Russian is one of the languages that are favoured by males. The primary goal of my case study was, therefore, to examine students? motivation to learn Russian and their attitudes towards language, community and Russian-speaking people.

The teaching of modern foreign languages within Swedish educational system has been a subject of a number of alarming reports in recent years. Several studies have shown that students lack motivation to learn any language but English. Of particular concern is the young males? underachieving and disinterest in foreign languages. In the meantime, a number of international studies and the statistical data from Swedish national agencies of secondary and higher education (Skolverket and Högskoleverket) have indicated that Russian is one of the languages that are favoured by males. The primary goal of my case study was, therefore, to examine students? motivation to learn Russian and their attitudes towards language, community and Russian-speaking people.

The teaching of modern foreign languages within Swedish educational system has been a subject of a number of alarming reports in recent years. Several studies have shown that students lack motivation to learn any language but English. Of particular concern is the young males? underachieving and disinterest in foreign languages. In the meantime, a number of international studies and the statistical data from Swedish national agencies of secondary and higher education (Skolverket and Högskoleverket) have indicated that Russian is one of the languages that are favoured by males. The primary goal of my case study was, therefore, to examine students? motivation to learn Russian and their attitudes towards language, community and Russian-speaking people.

AimThe purpose of this study was to investigate the relationship between off-ice horizontal jump tests and on-ice skating among students at hockey high schools. Questions: What is the association between the performance on horizontal jumps and skating 10 meters standing start among students in Swedish ice hockey high schools? What is the association between the performance on horizontal jumps and skating 10 meters flying start among students in Swedish ice hockey high schools?MethodStudents at three ice hockey high schools in the Stockholm area participated in the study. Two schools were national approved sports educations and one at lower level. All 50 students (41 at national approved sports educations and 9 lower level) that were included in the study were men and went year one and two in gymnasium.

AimThe purpose of this study was to investigate the relationship between off-ice horizontal jump tests and on-ice skating among students at hockey high schools. Questions: What is the association between the performance on horizontal jumps and skating 10 meters standing start among students in Swedish ice hockey high schools? What is the association between the performance on horizontal jumps and skating 10 meters flying start among students in Swedish ice hockey high schools?MethodStudents at three ice hockey high schools in the Stockholm area participated in the study. Two schools were national approved sports educations and one at lower level. All 50 students (41 at national approved sports educations and 9 lower level) that were included in the study were men and went year one and two in gymnasium.

AimThe purpose of this study was to investigate the relationship between off-ice horizontal jump tests and on-ice skating among students at hockey high schools. Questions: What is the association between the performance on horizontal jumps and skating 10 meters standing start among students in Swedish ice hockey high schools? What is the association between the performance on horizontal jumps and skating 10 meters flying start among students in Swedish ice hockey high schools?MethodStudents at three ice hockey high schools in the Stockholm area participated in the study. Two schools were national approved sports educations and one at lower level. All 50 students (41 at national approved sports educations and 9 lower level) that were included in the study were men and went year one and two in gymnasium.

The capacity to process and to remember information is a basic condition for language ability and for coming reading ability. Reading ability is strongly connected to phonological awareness, receptive vocabulary knowledge and working memory capacity. In what way hearing impairment in children affects development of cognitive skills and later on reading ability is an area that has attracted minor attention for research.The aim with this study was to investigate changes in cognitive skills and reading ability in children with mild or moderate hearing impairment after one year of progress and furthermore if any connections between any increases of the abilities were to be found. Comparisons were made with results from age adequate normal hearing children. Moreover prosodic ability on word-level was tested this year.

The purpose of the project is to determine the impact of solar cells and electrical vehicles on the future electricity grid and distribution network. Future electricity grids will be affected differently than it does today. Therefore, it is important to determine the impacts so that the current electricity distribution system can be developed and redesign to achieve the future demand. In Sweden, government has changed rules and laws in order to make it easier for private sector to invest in renewable energy sources. Our project focused on the impact of the solar cells and electric vehicles on the low voltage electricity distribution.

This is a thesis for a Bachelor Degree Project, performed in the subject MechanicalEngineering. The students Roger Malmberg and Simon Hagberg have carried out adesign project on behalf of the recently established company J&D Assisting systems,located in Halmstad.The project consisted in developing J&D's first prototype of a power assisting solutionfor wheelchairs. A power assisted wheelchair combines human power, which is deliveredby the arms through the pushrims, with electrical motors, which are powered by a battery.The power assisted wheelchair is aimed at customers, who have used a regularwheelchair for a long time, but who have become weaker or just need additional powerwhen driving uphill. This kind of wheelchair will provide additional power for users,which will spare their wrists, elbow and shoulders. The product is torque sensor free andinstead it relies on the velocity.

Denna examensrapport redogör för hur man kan få en kortslutningsskyddadoch säker inkoppling av en DC-länk mellan två skiljda elektriska system.Rapporten bygger på hur en lastbil ska kunna få en större säkerhet för attbibehålla sina elektriska bromsar om tex ett av bromssystemen tappar sinordinarie matning.Lastbilens bromssystem består idag av två skiljda elektriska system med ett 24volts strömförsörjande batteri vardera. Det ingår två stycken elektriskabromsar i varje system. Om det tex blir fel på en av bromsarna och dennapåverkar ett av systemen vill man kunna koppla bort denna enskilda bromsmed sitt system. Man vill även kunna försörja den fungerande bromsen somsitter i samma system via en så kallad Axle Link. Denna strömmatningslänksitter mellan två hjulpar på samma axel.I denna studie undersöktes möjligheten att realisera en kortslutningsskyddadoch säker DC-överföring via en Axle Link, i första hand med diskretakomponenter.