Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

In the electronic industrials, power control of AC motors is commonly used. For example power control of a washing machine motor, a vacuum cleaner motor or a coffee machine motor. The company Rejlers Ingenjörer AB has many projects where power control of AC motors is included. A prototype card for this task can save time and money for the company in the future and this is the reason for this thesis.The motors are power controlled by a TRIAC and control of the trigging pulses to the TRIAC. This card is modularly built and can easily be adapted for future projects where the power control of AC motors are included.The prototype card can be used as a subsystem in a larger electronics projects or as it is in lab environment for testing and evaluating new motors..

As changes occur more frequently in IT- and software development, it is important for the companies to meet the demands and needs of its customer. The companies have to be able to adapt themselves continuously in order till fulfill its customers changing needs in an effective way, which results in big changes of the companies? structures. The more traditional way of working is often replaced with more alternative approaches as a response to the reputable deficiencies of its predecessors. As an effect of the rapid change and development some companies now see big potential in switching to more Agile and flexible methods and some companies have no choice but to change their way of working.

The purpose of IFLA:s Core Programme ALP Advancement of Librarianship in the third world is to further the objectives of the library profession, library institutions and library and informationservices in the less developed countries in the third world. This essay deals with how and with what purpose IFLA/ALP managing developing work in the third world. What roles do they consider that the public library could play for development of the society? The essay also deal with purposes that have resulted in the close cooperation between IFLA/ALP and other organizations.till comparing their work with SIDA and UNESCO. Finaly I try to connect this work with a development theory and a global context..

The purpose of this work was to investigate and provide understanding regarding how AI can be used to make organizations more efficient, where risk management is also discussed. The basic model for the study is the Resource-based view, which is about making use of one's resources which are described through many different perspectives. The method used for this study was a qualitative analysis, which was applied through interviews with several people with high positions within companies and relevant skills, based on insight and experiential knowledge.These people work in different industries, therefore a large part of the work was intended to carry out a comparative analysis between a line of different businesses. The results showed that AI is in a developing phase, and based on the respective industry, it has developed in different ways. Finally, it turned out that AI can make businesses more efficient by, among other things, managing data and automating various work processes faster compared to humans.

In today?s society, there are many people who suffer from physical pains due to their work situation. To work sitting down by a desk long hours every day is quite normal but this is a problem. People that sit down and work in the same position all day long the whole week will eventually be affected by long-term work injuries.Large multinational companies around the world offer a customer service where they serve customers who have experienced a problem with that company?s products or services.

My essay is on the subject of teachers work environment with focus on noise and communication. In the essay questions are raised on how a teacher can influence his or hers noisy work environment. A school is a large work place with many employees and is owned and administered by the county municipality which is an even bigger workplace. How big an acting space does a teacher have in such a large organization?My methods of research on these questions have been to conduct interviews and analyzing documentation from The Swedish Work Environment Authority.

This report aims to provide an insight into the particle physics of today, and into the research that goes on within the field. The focus is partly on the recent discovery of the Higgs boson, and partly on how software can be used to simulate processes in particle accelerators. Basic concepts of particle physics and the search for the Higgs boson are discussed, and experimental results, including those from the Large Hadron Collider, are compared with simulations made in MadGraph 5. Furthermore, simple new models of particle physics are created in FeynRules, in order to make simulations based on the models. To support the presentations of these aspects, some of the underlying theory is built from the ground up.

This report aims to provide an insight into the particle physics of today, and into the research that goes on within the field. The focus is partly on the recent discovery of the Higgs boson, and partly on how software can be used to simulate processes in particle accelerators. Basic concepts of particle physics and the search for the Higgs boson are discussed, and experimental results, including those from the Large Hadron Collider, are compared with simulations made in MadGraph 5. Furthermore, simple new models of particle physics are created in FeynRules, in order to make simulations based on the models. To support the presentations of these aspects, some of the underlying theory is built from the ground up.

This study was made to compare construction companies for gardens way to work with up following, with purpose to see if there was an efficient and not resource demanded system which gave much value. To achieve the purpose a case study was made. The delimitation for the case study was only to compare the work with up following on individual project. The delimitation on the companies in the study was from ten to sixty employees. That because to reach companies were it´s not the same person how calculates on tenders and than perform the projects. The study was delimitated to the west side of Skåne. T o be able to compare the companies and to find trends, an interviewguide was made and was used during the interviews with the companies.

This master thesis has been performed at Sectra Communications AB in Linköping where they manufacture electronic encryption devices. In cryptology it is essential that an eavesdropper cannot find the plain text. To assure that a system is safe, all devices are thoroughly examined so that they don?t emit any secret information, so called Compromising Emanations (CE). This is done by comparing the secret signal with measured signals on the screen of an oscilloscope, a process that is very time consuming and furthermore, the risk of missing compromising emanations is high.

The purpose of this work is to explore the artistic processes of an ensemble where a musician and one or more dancers play together, either by improvising or by interpreting music that is written for the ensemble. The main themes are about finding ways to work with written material and still keep the communication between the music and the dance alive. The author is also interested in finding ways of identifying himself in the medium of dance although he is a musician. The result of this work can be seen in this text and in the attached film material..

Intranet is today a common technical groupware to communicate in many organisations. People can interact through the Intranet and communicate within the organization and get relevant information according to their workplace. It can be difficult to get everybody to use the Intranet as an information- and communication tool. This causes problems when people want to reach out with information. With these thoughts we entered our work at Luftfartsverket at Arlanda airport.

Today?s Sweden becomes more and more multicultural, with a mixture of many different languages. Many children are raised to learn two or more parent languages. If you work as an educationalist in preschool you will probably come in contact with these children. The question is how you should treat them and ease their development of languages.The purpose with this work is to find answers to the question if bilingual children develop their languages by the same method as monolingual and how one as an educationalist can make these children?s development of language easier.The papers preface is a part of literature that describes different researchers view on the bilingual children?s development of language and how one, as an educationalist, can ease it.To my study I have chosen to interview three educationalists in preschool who all work with bilingual children.

In this essay we have examined how social workers experience their positions as a public authority person in a society of democracy. As a public officer you have to follow rules and obey the law, which can be difficult if they don't agree with your personal opinion and values. In social work you work with people in a vulnerable situation and it may become extremely demanding to stand between the directions of established public administration and your own opinions. We have interviewed ten social workers working in social childcare division and analysed how they experience their situation at work. Our starting point is the critical theory of professor Lennart Lundquist about how democracy works in Swedish administrations.