This report describes the manufacture and control of a flying platform. The report describes the basic and fundamental theories required to get the platform flying. It touches on subjects such as A/D-conversion. PWM-control and PID-control. The sensors used in the platform are a gyro and an accelerometer.

This thesis has been carried out in collaboration with two students at the Department of Dental Medicine at Karolinska Institutet in Stockholm, Sweden. The aim of this project was to construct a computerized decision support system to facilitate diagnosis of changes in the Oral Mucosa using information collected by the above mentioned students. A program which poses specic questions to the user was constructed with the Java programming language. Depending on how these questions were answered, one or more possible diagnoses were presented by the program. In order to conclude whether or not this program was of any use in terms of time savings, a series of tests were run and timed both when using the program and when not.

Högfungerande autism eller Aspergersyndrom utgör den största gruppen inom autism spektrat. 4 av 1000 grundskolebarn räknas ha syndromet. Svårighetsgraden varierar från att vissa barn kan klara ett ganska normalt liv till att andra barn behöver omfattande hjälp. Forskningen har visat att autistiska barn ofta har en bristfällig sensorisk integration av sinnesintryck och bl a från vestibulära sinnet. Av barnen med diagnosen autism spektrum räknas c.a 80-90 % ha sensoriska problem.

Stormwater run-off from surfaces such as roads or rooftops is often polluted with heavy metals and nutrients. Many of these substances can cause great damage in biota if they end up in the recipient. In Sweden constructed wetlands and ponds for treatment of stormwater are frequently used, since research has shown that these treatment ponds are reducing stormwater pollution considerably to a low cost. The knowledge of these pollutant removal mechanisms and how follow-up and assessment of the ponds should be performed is still limited.To determine the pollutant removal efficiency of the stormwater ponds it is recommended that flow-weighted water samples are collected from both the inflow and the outflow of the pond. This method demands considerable resources of time and money for installations and analysis.

Abstract This paper discusses protectionism of intellectual property rights in general and the conflict between large pharmaceutical companies? rights to patent and developing countries? rights to cheap generic preparation in particular. The essay focuses above all on HIV/AIDS medicine. The description tries to give an image of the different interests that collide and why they collide. The different actors are above all the pharmaceutical branch, including researchers, inventors and salesmen with their economic interest of revenue, and the population of the development countries and their pressed situation considering the great need of medicine.

The purpose of this essay was to determine whether signs as alternative and augmentative communication is one possible resource for children?s language development. Based on my research questions How educators perceive the importance of SAAC as possible resources to enhance children's communication?, For which children is SAAC used? and How does educators perceive child?s best in communicative interactions? have I interviewed six educators in two different kinds of municipalities with different kind of positions.In my background I lift the importance of communication for the human being, what happens to the children who doesn?t get stimulated to their language and child?s best. My literature has shown that children need to have an incentive to acquire a language and that SAAC is mainly created for children with special needs.

The main topic of this thesis is to evaluate the impact on the usability of web pages when using responsive web design, a concept for developing web pages whose design adapts to the screen size being used. This is done by creating a responsive prototype based on an existing web site. A number of usability tests are conducted on the two versions of the site in order to compare the time to complete the tests and to observe the behaviour of the test participants. The tests are conducted on desktop as well as on mobile devices with varying screen size.The number of test participants was relatively low, and so the quantitative result is not statistically valid. However, the conclusion is that the most effective combination is to use either of the sites on desktop format.

This thesis investigates how Ericsson AB should do to achieve fast and secure handover when roaming in a WLAN. It also provides a security analysis of the system that the wireless access point is part of. The reason for this is that Ericsson is selling an access point called the ABS 2200 aimed at the public hotspot market. The premise was that they wanted a standardized way of handling the roaming issue. At the outset the 802.11F standard looked like a good alternative (in fact the only standardized alternative).

Copyright is a part of the intellectual property rights. This ancient occurrence became during 19th century observed by the legislation. Great economical interests and values made it necessary to create rules concerning how the exploitation would take place. Several important conventions were created during this century. For example, the Parisconvention (1883) and the Bernconvention (1886).

There are various investments to suit different investors, what affects the investor is the risk he/she takes with the investment and also the awareness  the investor has. According to different theories a higher risk gives even a higher yield to compensate for the extra risk the investor takes.In this paper, we discuss and compare two different forms of savings, Swedish closed-end funds and Swedish mutual funds to examine what alternative that generates highest returns in relation to the risk.To help, we use different evaluation measures that adjusts the different investments risk so that you can compare how well the investments have performed regardless of the risk they have. This will give us an answer about what investment form that have performed the best between 2002.01.01-20010.12.31. Five Sweden mutual funds and five closed-end funds have been selected to participate in the survey.To evaluate this, it is primarily quantitative data, analyzed in the evaluation measures. The results obtained in the survey show that Swedish closed-end funds have performed far better during the selected time period.

The purpose of the present pilot study was to evaluate the parentalintervention ComAlong at the Division of Child Language, for parents ofchildren with severe language impairment. ComAlong is one of the parentalinterventions developed in the AKKTIV project. AKKTIV stands foraugmentative and alternative communication ?early intervention. Thepresent study consists of a case study, a compilation of course evaluationsand an interview with the two leaders of the course.

The present study concerns a concept development of a product idea that Bengt Magnuson, associate professor, had when a heavy storm caused a widespread power failure of long duration. With a basic power-producing unit one should be able to get through a power loss. The product could also be useful for other tasks if different modules are connected, e g grass mower or snow-blower.According to the product idea the basic unit will be able to produce electric power enough for a fridge, freezer, TV, and a few electric lamps. Normally the basic unit can be used e g as a mower, when such a module is attached. An increased number of tasks would make the contraption useful and tempting for those who do not own an electrical power set in reserve.

This report investigates the possibility to use non-petroleum based adhesive (biobitumen) in asphalt. The main reasons for replacing bitumen are the fact that oil prices are rising, the threat of peak oil and the fact that the asphalt industry is becoming more environmentally friendly.The main purpose of this report is to investigate whether there are any non-petroleum based adhesives on the market. If so, how can they be used? The questions covered are:? Are there any other alternative asphalt coatings available?? Can bio-oils be used in asphalt?? If the bio-oils can be used, what are the details their properties?? How does a cold climate affect the bio binders?? What is the Swedish asphalt industry?s opinion about bio asphalt?The project was concluded through literature studies, consultations with people in the asphalt industry and through several interviews.The conclusion of this report is that there are some existing non-petroleum based adhesives on the market. They are mainly used for bike paths, sidewalks and parkareas.

During spring 2012, six students at the Royal Institute of Technology in Stockholm carried out agroup project in the field of mechatronics as part of the thesis for the bachelor degree. The resultwas a robot with active balancing and the purpose of this report is to describe the development,manufacturing and problems that arose during the project. The finished robot has two wheelsmounted in line with each other, like a bicycle. Measurement data from an accelerometer and agyroscope are used together in a complementary filter for determining the angle from the verticalplane. For balancing, a PID controller was used to control the rotation of a reaction wheel, whenaccelerating causes a straightening torque.

Does playing have to hurt? - A quantitative study of ergonomics and double bass playing. This is a paper about ergonomics and double bass playing. I have studied the prevalence of playing-related pain in professional double bass players, teachers and students. This study is based on a questionnaire with 11 questions about double bass playing and pain.