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Sökning: tom karlsson > (2005-2009)

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  • Karlsson, Tom, 1979 (författare)
  • The (re)production of accountability within the Swedish public sector
  • 2009
  • Ingår i: The Gothenburg Public Management seminar 2009.
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • Accountability and responsibility are two notions that are deeply connected and intertwined. The prevailing notion is that personnel should be held accountable for actions made that are connected to the area which they are responsible for. However, contemporary research has tried to understand the underlying assumptions of what accountability is. In this sense accountability becomes the alignment between overall societal norms and individual actions. But whereas previous research has been content with either an actor- or structure approach this paper tries to bridge these standpoints by engaging Giddens (1984) Structuration theory. Viewing accountability as a social system, this paper focuses on extending our knowledge of how this is produced and reproduced during organisational change within the Swedish public sector. The case used in this paper derives from in-depth inter- views, participatory observations and documental studies of the Swedish social in- surance agency. The analysis is conducted though a separation and identification of structures of signification, domination and legitimation. This paper concludes that the diverging modes of managerial- and bureaucratic discourses, derived from changes in surrounding societal norms and organisational control systems, sup- ports and reinforces the reproduction of accountability as a social system.
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  • Karlsson, Per-Åke, et al. (författare)
  • Evaluation Workshops for Capacity Building in Welfare Work : Some Swedish Examples
  • 2008
  • Ingår i: Evaluation. - : Sage Publications Ltd.. - 1356-3890 .- 1461-7153. ; 14:4, s. 477-491
  • Tidskriftsartikel (refereegranskat)abstract
    • Ever increasing demands are being made on welfare organizations to display efficiency. Evaluation workshops constitute a form of learning for the purposes of building up competence to conduct evaluations within welfare organizations, with the support of research and development units. In workshops of this kind, welfare work professionals meet in order to conduct evaluations together with researchers/professional evaluators.This article presents experiences from 10 such evaluation workshops conducted in western Sweden.The workshops were perceived very positively by the participants. While the evaluations are being conducted, the participants also develop a more general competence in this field.The evaluations conducted at the workshops are primarily internal, but with external support, with all the limitations this involves in relation to the possibilities for critical scrutiny. Evaluation workshops have a beneficial effect on the learning of evaluation methods by directly combining learning and conducting evaluation. The workshops may also serve to build capacity in the organizations for evaluative work.
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  • Boström, Henrik, et al. (författare)
  • On the Definition of Information Fusion as a Field of Research
  • 2007
  • Rapport (övrigt vetenskapligt)abstract
    • A more precise definition of the field of information fusion can be of benefit to researchers within the field, who may use uch a definition when motivating their own work and evaluating the contribution of others. Moreover, it can enable researchers and practitioners outside the field to more easily relate their own work to the field and more easily understand the scope of the techniques and methods developed in the field. Previous definitions of information fusion are reviewed from that perspective, including definitions of data and sensor fusion, and their appropriateness as definitions for the entire research field are discussed. Based on strengths and weaknesses of existing definitions, a novel definition is proposed, which is argued to effectively fulfill the requirements that can be put on a definition of information fusion as a field of research.
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  • Elgqvist, Jörgen, 1963, et al. (författare)
  • Therapeutic efficacy and tumor dose estimations in radioimmunotherapy of intraperitoneally growing OVCAR-3 cells in nude mice with (211)At-labeled monoclonal antibody MX35
  • 2005
  • Ingår i: J Nucl Med. - 0161-5505. ; 46:11, s. 1907-15
  • Tidskriftsartikel (refereegranskat)abstract
    • The purpose of this study was to investigate the therapeutic efficacy of-and to estimate the absorbed dose to-tumor cells from radioimmunotherapy (RIT) in an ovarian cancer model using the alpha-particle-emitting nuclide (211)At labeled to monoclonal antibody (mAb) MX35. Previous studies on mAb MOv18 did not allow for dosimetry because of antigen shedding in vitro. METHODS: Five-week-old female nude BALB/c nu/nu mice were inoculated intraperitoneally with 1 x 10(7) cells of the human tumor cell line OVCAR-3. Three weeks later, the animals were given approximately 400, 800, or 1,200 kBq of (211)At-labeled mAb MX35 intraperitoneally. As controls, one group of animals was injected with unlabeled mAb and another group was injected with phosphate-buffered saline (PBS). Another group was given approximately 400 kBq of (211)At labeled to the previously investigated mAb MOv18 for efficacy comparison. Two months after treatment, the animals were sacrificed and the presence of macroscopic and microscopic tumors, as well as ascites, was determined. The absorbed dose to tumor cells on the peritoneal surface was estimated in terms of the sum of a specific and a nonspecific contribution. The specific contribution, arising from mAbs binding to the antigenic sites on the cell membrane, was calculated using a dynamic compartment model developed in-house and Monte Carlo software. The model used as input values the number of mAbs injected into the abdominal cavity, N(mAb), the specific activity, A(sp), the association rate constant, k(on), and the maximal number of mAbs bound per cell, B(max)-all determined by in vitro experiments. This specific component of the absorbed dose was calculated for assumed cell cluster sizes with radii of 25, 50, and 100 microm. The nonspecific contribution to the absorbed dose was derived from unbound mAbs freely circulating in the abdominal cavity, also using the Monte Carlo software. RESULTS: In the control groups given unlabeled MX35 or PBS, all 18 animals had ascites, 6 of 9 animals in each group had macroscopic tumors, and all animals had microscopic growth. In the 3 groups given different amounts of (211)At-MX35, only 3 of 25 animals developed ascites. None of these animals had any sign of macroscopic tumors, but 8 had microscopic growth. In the group given (211)At-MOv18, no animals had ascites or macroscopic tumors, but 3 of 10 animals had microscopic tumors. After injecting 400 kBq of (211)At-MX35, the absorbed dose due to specific binding, for a cell cluster with a radius of 50 microm, ranged from 413 to 223 Gy between 0- and 45-microm distance from the cluster center, assuming a homogeneous distribution of (211)At-MX35 in the cluster. The contribution from unbound (211)At-MX35 and (211)At-MX35 only distributed on the cluster surface, for this cluster size, ranged from 7 to 14 Gy and from 29 to 94 Gy, between 0- and 45-microm distance from the cluster center, respectively. The calculated total absorbed doses are in a clinically relevant range and were effective as verified in the nude mice with subclinical intraperitoneal growth of OVCAR-3 cells. CONCLUSION: (211)At-MX35 injected intraperitoneally exhibits a high efficacy when treating micrometastatic growth of the ovarian cancer cell line OVCAR-3 on the peritoneum of nude mice.
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