The purpose of this project was to further develop and complete a quadcopter that had been built in an earlier course at KTH, so that it could be used for demonstration and education at the school. The quadcopter was at the beginning of the project completed when it came to hardware, and there was some software functionality implemented but no system for automatic stabilization. The main goal of the project was to implement such a system, and to combine it with the previous functionality to make the quadcopter operable and able to fly. To create a functioning and stable ground multiple basic software features has been implemented, and on top of that additional software to improve the safety, stability and functionality. The most important part is the control system that is responsible for converting sensor and control signals to suitable motor values.

The aim of this report is to give a description of a diploma work of 20 points that has been performed during the spring 2006 at Ericsson AB in Borås. The report accounts for the problem and procedure during the diploma work. The software used for this project was embedded in a radio link. The RAM in this radio link was divided into several regions where two were used for memory allocation. The current allocation of memory in the radio link was not optimized with regards to performance, security and memory use and the configuration used made it difficult to determine the memory use of the system and the actual memory need.

The purpose of this thesis is to describe what Building Information Modeling, BIM, could mean for landscape architects, and also hopefully to make sense of the possibilities and problems of the system. BIM is about virtual design and is based on all consultancy groups in the design team modeling in 3D. Intelligent objects and metadata, such as price and material, are used. The project group has a common interchange format for simple sharing of information. To get an idea of how the situation with BIM for landscape architects looks like today, I collected information mostly through interviews.

The term ?health maintenance? was introduced in the 1960?s. A common conception nowadays is that health maintenance is always beneficial. Gestaldo (1997) meant that health education on one hand could give the individual a feeling of autonomy, but on the other hand also put the individual in an inferior position where the teacher represented ?the truth?.

Organizational culture is a widely discussed topic. Today job mobility in society is increasing as well as part-time employment. This study aims at investigate how organizational culture is maintained in an organization where employees work as combiners of different work occupations. The study is a case study of the department of Art at Konstfack (The University College of Arts, Crafts and Design). The organization is unique in the respect to that the majority of the employees have part-time employments within Konstfack combined with their parallel own artistic occupations.

The purpose of this study is to describe and analyze how health care providers, working at care facilities providing maintenance treatment programs for opiate dependence, perceive and manage the legal framework governing the treatment. The study is limited to a few particular rules within this framework which over the recent decade have been the subject matter of debate regarding i.a. their alleged lack of relation to scientific research and their frequently disastrous implications for program participants. The empirical material consists of interviews with five respondents working at four different care facilities and has been analyzed by using Lipskys theory on street-level bureaucrats as policymaking agents. The results of the study show that the rules are looked upon and dealt with in a liberal fashion and that the primary loyalty of the maintenance treatment staff is clearly directed towards promoting the well-being of their patients and helping them reach their treatment goals rather than strictly following the rules..

The maintenance phase within software projects is typically very expensive in terms of resources. The activities of this phase are largely focused around some form of modification of program code. This leads one to consider if there are alternative methods of code production that results in code that allows for less costly modifications. This thesis has its basis in a subset of those concepts which research has shown to provide more flexible code. Once this subset is established, connections are made between the concepts within the subset and claims of benefits provided by the use of Test Driven Development (TDD) methodology.

The purpose of this thesis is to examine whether parents that obtain long-term maintenance support in Enköping, consider the support as adequate when trying to meet their children's basic needs. The thesis also intends to investigate whether parents experience that their children, because they receive income support, have been socially excluded or stigmatized in their daily lives because of the family?s maintenance support. Further, the thesis aims to examine if there are any discrepancies in the above mentioned issue in relation to how long the parents have received maintenance support. Theoretical starting points used in this thesis mainly consist of the child perspective, social exclusion and the stigmatization theory.

At Forsmark nuclear power plant the rather old-fashioned software COPTA is used in containment safety analysis. There exists a desire within the organisation to introduce a more modern software with ability to more detailed modeling and increased usability.The goal of this thesis was to evaluate the software APROS in containment safety analysis. APROS models describing one of the containments at Forsmark NPP have been developed. Two simulations of typical containment incidents, one of them a large pipe break, have been made where containment safety parameters such as pressure and temperature are studied. Results are analyzed and verified against results from corresponding COPTA models.

The purpose of this thesis is to analyze and propose improvements to the current procedure for cost estimations of purchased maintenance work at Banverket, the Swedish rail administration. This governmental institution is responsible for the procurement of maintenance services for the country?s railroad network through open tenders. Due to the generally low number of contractors, it is particularly necessary to establish accurate cost estimates in order to assess the offers and ensure that a fair price is being paid to the suppliers. Several flaws associated with the current practice are identified and analyzed according to cost accounting theories.

Debate over Intellectual Property Rights ?IPRs? particularly patent and copyrights is mainly on forward-looking industries in computer software. As part of a trade deal reached in 1994, the member nations of the World Trade Organisation must adhere to a global agreement known as TRIPS, for the Trade- Related Aspect of Intellectual Property Rights.This study is to analyse the ethical conception of Intellectual Property Rights and in particular its implications on the developing countries in relation to TRIPS. The approach will be to analyse a broad philosophical theories of property to see if there is any justification for a software program to be treated as private property and also argue base on John Rawls two principles of justice in relation to TRIPS Agreement. Some reflections will be put on the use of open-source software by less developing countries.From the study it was asserted that, strong IPRs protection would hinder technological transfer and indigenous learning activities in the early stage of industrialisation when learning takes place through reverse engineering.

This thesis has been written at Linköping University for the company Instrument Control Sweden AB (ICS).ICS is a small company located in Linköping that develops software and hardware for Unmanned Aerial Vehicles, UAV. At present, ICS has a fully functional autopilot called EasyPilot but they want to reduce the autopilot?s size to make it more attractive.The purpose of this thesis was to investigate if it was possible to reduce the size of the autopilot and how, in that case, it would be done. It was also necessary to examine whether the old processors should be replaced by new ones and how hard it would be to convert the old software to these new processors.To succeed with the goals many of the old components had to be changed for new, smaller ones. Some less necessary parts were also completely removed.

The purpose of this thesis is to investigate if there are environments that use some kind of central authentication system within institutions/schools. The hypothesis is that an institution not using a form of central authentication service has more need for maintenance and as such is considered a higher cost for the organization. The gathering of data has been done through interviews with technical personal at Blekinge Tekniska Högskola and Linköpings Universitet. Based on the technical background of the authors, and the system limited to discussing Windows and UNIX operating systems, a discussion and analysis of the systems working today has been done, with emphasize on the hypothesis..

Examensarbetet utfördes på Priority Aero Maintenance som är belägna vid Arlanda flygplats, Stockholm. Priority Aero Maintenance är i enlighet med EASA Part 145 en godkänd underhållsorganisation och utför all sorts underhåll på ett flertal olika flygplanstyper.Underhållsarbete är ett mycket noggrant arbete som följer, av underhållsorganisationen själva, bestämda procedurer och rutiner. Hur arbetet utförs ska vara godkänt av myndigheten och finns beskrivet i underhållsorganisationens MOE, Maintenance Organisation Exposition, även kallad verkstadshandbok.Vid underhållsarbete finns det framtagna underhållskort eller jobbkort. Där varje jobbkort specificerar en särskild underhållsåtgärd. Då en underhållsorganisation åtar sig ett större underhållsarbete innebär detta således en hantering av hundratals jobbkort.Då Priority Aero Maintenance inte har en fast struktur för hur hanteringen av jobbkort ser ut, med avseende på sortering inför en underhållscheck.

yield optimization, wind energy, sustainability, maintenance..