Spatial Data Analysis (SDA) is relatively narrower and constitutes one of the areas of Spatial Analysis. Geographic Information System (GIS) offers a potentially valuable platform for supporting SDA techniques. Integration of SDA with GIS helps SDA to benefit from the data input, storage, retrieval, data manipulation and display capabilities of GIS. Also, GIS can benefit from SDA techniques in which the integration of these techniques can increase the analysis capabilities of GIS. This integration serves for disseminating and facilitating improved understanding of spatial phenomena. How SDA techniques should be integrated with GIS arise the coupling problem. The complete integration of SDA techniques in GIS can be applied without the support of GIS vendor when the free/libre and open source software (FLOSS) development methodology is properly followed. This approach causes to interpret the coupling problem in a new way. This thesis aims to develop a fully coupled SDA with GIS in FLOSS environment. A fully coupled SDA in free GIS software as FLOSS system is developed by writing nearly 13,000 line Python code in 2.5 years. Usage of this system has reached to nearly 1600 unique visitors, 3000 visits and 8600 page views in two years. As the current status of development in GIS is considered, it is unlikely in commercial market to have full coupled SDA techniques in GIS software. However, it is expected to have more SDA developments in proprietary GIS software in the near future as there is an increasing trend for requesting more sophisticated SDA tools.

In this thesis we explore how knowledge management is performed in open source projects. Open source projects are often perceived as informal, even unmanaged. Still, they appear to manage knowledge acquisition and sharing sufficiently well to successfully develop software in such a distributed environment as the Internet. This thesis aims to explore that apparent contradiction, and thus complement the currently limited research in this field. The thesis consists of a literature study of knowledge management theory and open source development, resulting in the analysis of open source practices from a knowledge management perspective. Currently the field of knowledge management maintains several, partially opposing doctrines. Apart from the business aspect, two main schools of thought are present. The commodity school approaches knowledge as a universal truth, an object that can be separated from the knower. The community school emphasises knowledge as something internal to the human mind, but which can be shared as experiences between people. In the analysis presented, we have applied an analysis method which considers both the commodity and the community perspectives. The analysis is based on previous research studies of open source, and open source practices, and is furthered by a cursory case study using examples from a selected set of open source projects. Our conclusions are that knowledge management indeed is present in open source projects, and that it is supported by an ecology like interaction of project practices. / Denna uppsats undersöker hur kunskapsledning används i öppenkällkodsprojekt. Öppenkällkodsprojekt uppfattas ofta som informella, ibland till och med okontrollerade. Ändå verkar de kunna hämta in och sprida kunskap tillräckligt väl för att kunna utveckla lyckade programvaruprojekt, även i en så distribuerad miljö som Internet. Med uppsatsen vill vi undersöka den skenbara motsättningen. Uppsatsen består av en literaturstudie av kunskapsledning och öppen källkod. Dessa studier har utmynnat i en analys av projektmetoder som används i öppenkällkodsprojekt, sett från ett kunskapsledningsperspektiv. Idag finns det flera motsägelsefulla lärosatser inom området kunskapsledning. Två huvudsakliga inriktningar är den kognitiva skolan och den konstruktivistiska skolan. I den kognitiva skolan anses kunskap kunna objektiviseras och behandlas som en vara, separat från personen som har kunskapen. Den konstruktivistiska skolan anser att kuskapen är bunden till den som vet, men att det går att dela med sig av kunskap genom social interaktion. I uppsatsen har vi analyserat projektmetoderna från båda dessa perspektiv. Analysen baseras på tidigare forskning om öppenkällkodsprojekt, och kompletteras av exempel på hur projektmetoderna används i ett urval av öppenkällkodsprojekt. Våra slutsatser är att det finns ett starkt stöd för kunskapsledning i öppenkällkodsprojekt och att den stöds av en ekologiliknande växelverkan mellan olika projektmetoder.

No description available.

The rapidly evolving technologies in the automotive industry have been defining new challenges, setting new goals and consenting to more complex systems. This steered the AUTOSAR community toward the independent development of the AUTOSAR Adaptive Platform with the intention of addressing and serving the demands defined by the new technology drivers. The use of an already existing software based on an open-source development - specifically GNU/Linux - was recognized as a matching candidate fulfilling the requirements defined by AUTOSAR Adaptive Platform as its operating system. However, this raises new challenges in addressing the safety aspect and the suitability of its implementation in safety-critical environments. As safety standards do not explicitly handle the use of open-source software development, this thesis proposes a tailoring procedure that aims to match the requirements defined by ISO 26262 for a possible qualification of GNU/Linux. And while very little is known about the behavior specification of GNU/Linux to appropriate its use in safety-critical environments, the outlined methodology seeks to verify the specification requirements of GNU/Linux leveraging its claimed compliance to the POSIX standard. In order to further use GNU/Linux with high pedigree of certainty in safety-critical applications, a software partitioning mechanism is implemented to provide control over the resource consumption of the operating system –specifically computation time and memory usage- between different criticality applications in order to achieve Freedom from Interference. The implementation demonstrates the ability to avoid interference concerning required resources of safety-critical applications.

The rapidly evolving technologies in the automotive industry have been defining new challenges, setting new goals and consenting to more complex systems. This steered the AUTOSAR community toward the independent development of the AUTOSAR Adaptive Platform with the intention of addressing and serving the demands defined by the new technology drivers. The use of an already existing software based on an open-source development - specifically GNU/Linux - was recognized as a matching candidate fulfilling the requirements defined by AUTOSAR Adaptive Platform as its operating system. However, this raises new challenges in addressing the safety aspect and the suitability of its implementation in safety-critical environments. As safety standards do not explicitly handle the use of open-source software development, this thesis proposes a tailoring procedure that aims to match the requirements defined by ISO 26262 for a possible qualification of GNU/Linux. And while very little is known about the behavior specification of GNU/Linux to appropriate its use in safety-critical environments, the outlined methodology seeks to verify the specification requirements of GNU/Linux leveraging its claimed compliance to the POSIX standard. In order to further use GNU/Linux with high pedigree of certainty in safety-critical applications, a software partitioning mechanism is implemented to provide control over the resource consumption of the operating system –specifically computation time and memory usage- between different criticality applications in order to achieve Freedom from Interference. The implementation demonstrates the ability to avoid interference concerning required resources of safety-critical applications.