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1.
  • Sarve, Hamid, et al. (författare)
  • Registration of 2D Histological Images of Bone Implants with 3D SRμCT Volumes
  • 2008
  • Ingår i: Advances in Visual Computing : 4th International Symposium, ISVC 2008, Las Vegas, NV, USA, December 1-3, 2008. Proceedings, Part I. - Heidelberg/Berlin : Springer. - 978-3-540-89638-8 ; s. 1071-1080
  • Konferensbidrag (refereegranskat)abstract
    • To provide better insight in bone modeling and remodeling around implants, information is extracted using different imaging techniques. Two types of data used in this project are 2D histological images and 3D SRμCT (synchrotron radiation-based computed microtomography) volumes. To enable a direct comparison between the two modalities and to bypass the time consuming and difficult task of manual annotation of the volumes, registration of these data types is desired.In this paper, we present two 2D-3D intermodal rigid-body registration methods for the mentioned purpose. One approach is based on Simulated Annealing (SA) while the other uses Chamfer Matching (CM). Both methods use Normalized Mutual Information for measuring the correspondence between an extracted 2D-slice from the volume and the 2D histological image whereas the latter approach also takes the edge distance into account for matching the implant boundary. To speed up the process, part of the computations are done on the Graphic Processing Unit.The results show that the CM-approach provides a more reliable registration than the SA-approach. The registered slices with the CM-approach correspond visually well to the histological sections, except for cases where the implant has been damaged.
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  • Bengtsson, Ulrika, et al. (författare)
  • Development of a mobile phone self-report system for persons with hypertension: focus group interviews with patients and providers
  • 2013
  • Ingår i: Kardiovaskulära Vårmötet 2013.
  • Konferensbidrag (refereegranskat)abstract
    • Introduction: Hypertension is a risk factor for cardiovascular disease for which poor adherence to therapy becomes a substantial threat to health. Major efforts have been made to explore reasons for poor adherence but few successful interventions have been designed. There is a need for effective strategies designed to facilitate an increased understanding for the complexity of hypertension and treatment by strengthening of patient participation as well as patient empowerment. Purpose / Methods: The aim of this study was to explore and describe relevant aspects of hypertension and hypertension treatment, from the perspective of persons with hypertension and health care providers. Focus group interviews were performed with 15 persons with hypertension and 12 health care providers and analysed according to thematic analysis. Results: Persons with hypertension perceived trust, relationship to providers, well-being and prevention of complications as important aspects of hypertension care. Further they sought to understand the interplay between symptoms and variation of blood pressure. The providers emphasised accessibility, clear and consistent counselling, prevention of complications and educational efforts but doubted patients’ ability to be participating partners in care. Conclusion: The study presents aspects that persons with hypertension and health care providers deem important in hypertension management. Our finding provides input for future outcome measures, such as self-reports and may serve as a foundation for the development of a self-report system for persons with hypertension. They may further facilitate patient empowerment by increasing the understanding of hypertension and its’ treatment, from a person-centred perspective.
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5.
  • Larsson, Per-Olof, 1948- (författare)
  • Arbete för personer med intellektuella funktionshinder
  • 2009
  • Ingår i: Forskningspresentation vid Arbetslivskonferens – Ett arbetsliv för alla 18-19 mars 2009 Mimerskolan i Umeå anordnad av Luleå kommun, Umeå Universitet, Regionalt Utvecklingscentrum vid Umeå Universitet och Umeå Kommun..
  • Konferensbidrag (övrigt vetenskapligt)
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6.
  • Larsson, Per-Olof, 1948- (författare)
  • Arbete för personer med utvecklingsstörning
  • 2009
  • Ingår i: Forskningspresentation ”Unga med Funktionshinder” med Arbetsförmedlingen, Socialtjänsten och Försäkringskassan i Göteborg Region Väster 5 mars 2009 om "Arbetsgivarens motiv att anställa och arbetskamraternas motiv att integrera personer med intellektuellt funktionshinder på arbetsplatsen"..
  • Konferensbidrag (övrigt vetenskapligt)
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9.
  • Sou, Kin Cheong, 1979-, et al. (författare)
  • Nonserial Dynamic Programming with Applications in Smart Home Appliances Scheduling - Part I : Precedence Graph Simplification
  • 2014
  • Ingår i: 2014 European Control Conference (ECC). - IEEE. - 978-3-9524269-1-3 ; s. 1643-1648
  • Konferensbidrag (refereegranskat)abstract
    • In this and a companion paper a dynamic programming (DP) approach to solve a smart home appliances scheduling problem is considered. The challenge with solving the scheduling problem is the coupling of decision variables due to some time precedence constraints. In general, the system of precedence constraints may contain redundant constraints that offer opportunities for simplification. This simplification is desirable for reducing the computation effort of the nonserial DP procedure presented in the companion paper (i.e., Part II). The current paper establishes the uniqueness of the maximum set of redundant constraints and its polynomial-time solvability with optimality guarantee, under the sufficient and necessary condition that the precedence graph (a graph representation of the precedence constraints system) does not contain any cycle with nonnegative weight. A numerical case study indicates the efficiency of the proposed simplification algorithm versus the brute-force enumerative search. Besides helping to reduce the computation effort in the DP procedure described in the companion paper, the algorithm in the current paper solves a generalization of a precedence graph simplification problem arising from application areas such as parallel computing.
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