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- Persson, Anders
(author)
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Förutsättningar för sammanhållen kommunal eFörvaltning
- 2009
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Licentiate thesis (other academic/artistic)abstract
- De senaste decennierna har inneburit en kraftig fokusering på förvaltningsutveckling i Sverige och internationellt. Såväl informationsteknik som från näringslivet överförda arbetssätt och synsätt på förvaltningen har kommit att bli centrala inslag i olika ansatser för reformering av den offentliga förvaltningen. Större medborgarfokusering, högre effektivitet och bättre horisontell och vertikal samverkan mellan myndigheter är paradbegrepp för utvecklingen. Utvecklingen kring eFörvaltningen i Sverige har främst inriktats på och skett i statliga myndigheter medan kommunerna kommit att senare anamma denna utvecklingstrend. I avhandlingen studeras förutsättningarna för sammanhållen eFörvaltning med sammansatta ärenden gentemot företag som söker etablering eller utveckling av sin verksamhet i en kommun. Dessa sammansatta ärenden är ur företagets perspektiv uppfattat som ett ärendeaggregat men är ur den kommunala förvaltningens perspektiv ett stort antal ärenden inom olika förvaltningar. I avhandlingen diskuteras överföring av synsätt och arbetssätt från näringslivet och att dessa kan innebära konflikter med traditionella till offentlig förvaltning knutna värden och således bör behandlas med försiktighet. Arbetet har utförts genom en fallstudie i en av Sverige större kommuner där förutsättningarna för sammanhållen förvaltning och kommunal eFörvaltning studerats exemplifierade genom sammansatta företagsärenden och nyetableringsärenden. På förvaltningarna involverade i dessa sammansatta ärenden har intervjuer genomförts och gemensamma seminarieaktiviteter utförts för att utreda vilka potentiella risker och förtjänster som kan aktualiseras genom samverkan och klientfokusering. Förutsättningarna för informationssystemstöd och gränsöverskridande informationshantering är centrala inslag i analysen. I avhandlingen förmedlas kunskap kring sektoriseringens negativa och positiva effekter i kommunal förvaltning samt värdekonflikter kring kundorientering, processorientering och reduceringen av en multiklientrelation till en dyadrelation i sammansatta ärenden. Detta bildar grunden för diskussionen om begränsningar och restriktioner för sammanhållen kommunal förvaltning och vilken roll informationshantering och informationssystem kan spela i förvaltningsutvecklingen.
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| 2. |
- Persson, Anders J., 1975-
(author)
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Ethical problems in work and working environment contexts
- 2004
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Licentiate thesis (other academic/artistic)abstract
- This thesis identifies and systematizes two categories ofpractical problems that stem from work and working environmentcontexts: workplace privacy and occupational health risks. Thefocus of the discussion is on ethical justification. Do we havereason to accept a certain level of (potential) harm toemployees by virtue of the fact that they are employees, and ifso, under what circumstances? The thesis consists of a briefintroduction and three essays. InEssayI, it is argued that employees have a prima facieright to privacy, but that this right can be overridden bycompeting moral principles that follow, explicitly orimplicitly, from the contract of employment. Three types ofjustification are specified: those that refer to the employer'sinterests, those that refer to the interests of the employee,and those that refer to the interests of third parties. A setof ethical criteria is developed and used in the subsequentessay to determine the moral status of infringement ofworkplace privacy. InEssayII, these criteria are applied to three broadcategories of intrusive workplace practices: (1) monitoring andsurveillance, (2) genetic testing, and (3) drug testing.Scenarios are used to show that such practical ethical problemscan be handled systematically using proposed guidelines. It isalso shown that some practices are dubious and at least some ofthem can be replaced by less intrusive means of ensuring thedesired outcome, for instance efficiency or safety in aworkplace. EssayIII deals with the fact that health and safetystandards for employees are less protective than those thatapply to the public. Emphasis is put on the distinction betweenexposure and risk, and this distinction is claimed to be a keyfactor in the relevance of arguments in favour of such doublestandards. The analysis of 'double standards' for public andoccupational exposure to risk aims to show that a justificationof such standards is closely linked to two separate types ofissues, namely empirical and normative issues. It is claimedthat this kind of differentiation seems to be supported neitherby a reasonable conception of the contract of employment nor byany obvious ethical principle that is applicable to workplacesor work situations in general. Key words:Contract of employment, double standards,drug testing, ethics, ethical justification, exposure, genetictesting, health and safety standards, privacy, surveillance,risks, work, work environment
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- Persson, Anders, 1972
(author)
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Towards a Functional Programming Language for Baseband Signal Processing
- 2014
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Licentiate thesis (other academic/artistic)abstract
- Developing software for resource constrained embedded systems is a daunting task. In addition to getting the functionality right, a programmer must consider several non-functional properties, including data layout, the target memory hierarchy, concurrency and parallelism. The programmer has to decide on a specific and reasonable solution on these properties upfront during development However, these decisions are necessarily based on incomplete information, since the optimial solution depends on the actual deployment on the target hardware.In this thesis we explore a generative approach, with a staged functional domain specific language, to postpone many of these decisions to a much later stage of the development process.The staged approach gives the progammer explicit control over much of the code generation by using combinators to build the application from reusable components and skeletons.Currently, Feldspar is focused on the data processing part of signal processing in embedded systems. The Feldspar compiler generates single C functions that can be integrated into existing systems. The Feldspar language is based on a combination of shallow and deep embedding, which makes it modular both for the language developer and the end user. This modularity made it easy to add monadic expressions to support mutable updates and deterministic parallelism. Future work includes generation, deployment and orchestration of systems of data processing functions and control processing.Additionally, this thesis presents a technique, and supporting library that allows the programmer to test, profile and analyze compiled Feldspar programs from the host language environment.
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| 7. |
- Wang, Chunliang, 1980-
(author)
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Computer Assisted Coronary CT Angiography Analysis : Disease-centered Software Development
- 2009
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Licentiate thesis (other academic/artistic)abstract
- The substantial advances of coronary CTA have resulted in a boost of use of this new technique in the last several years, which brings a big challenge to radiologists by the increasing number of exams and the large amount of data for each patient. The main goal of this study was to develop a computer tool to facilitate coronary CTA analysis by combining knowledge of medicine and image processing.Firstly, a competing fuzzy connectedness tree algorithm was developed to segment the coronary arteries and extract centerlines for each branch. The new algorithm, which is an extension of the “virtual contrast injection” method, preserves the low density soft tissue around the coronary, which reduces the possibility of introducing false positive stenoses during segmentation.Secondly, this algorithm was implemented in open source software in which multiple visualization techniques were integrated into an intuitive user interface to facilitate user interaction and provide good over¬views of the processing results. Considerable efforts were put on optimizing the computa¬tional speed of the algorithm to meet the clinical requirements.Thirdly, an automatic seeding method, that can automatically remove rib cage and recognize the aortic root, was introduced into the interactive segmentation workflow to further minimize the requirement of user interactivity during post-processing. The automatic procedure is carried out right after the images are received, which saves users time after they open the data. Vessel enhance¬ment and quantitative 2D vessel contour analysis are also included in this new version of the software. In our preliminary experience, visually accurate segmentation results of major branches have been achieved in 74 cases (42 cases reported in paper II and 32 cases in paper III) using our software with limited user interaction. On 128 branches of 32 patients, the average overlap between the centerline created in our software and the manually created reference standard was 96.0%. The average distance between them was 0.38 mm, lower than the mean voxel size. The automatic procedure ran for 3-5 min as a single-thread application in the background. Interactive processing took 3 min in average with the latest version of software. In conclusion, the presented software provides fast and automatic coron¬ary artery segmentation and visualization. The accuracy of the centerline tracking was found to be acceptable when compared to manually created centerlines.
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