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Sökning: db:Swepub > Persson Anders

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583.
  • Persson, Anders, 1953- (författare)
  • Image Technology of the Future
  • 2006
  • Ingår i: British Journal of Surgery. - : John Wiley & Sons. - 0007-1323 .- 1365-2168. ; 93:10, s. 1182-1184
  • Tidskriftsartikel (refereegranskat)abstract
    • Expectation of imaging-based treatments
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584.
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585.
  • Persson, Anders (författare)
  • Implicit bias in predictive data profiling within recruitments
  • 2016
  • Ingår i: Privacy And Identity Management. - Berlin : Springer Berlin/Heidelberg. - 9783319557823 ; , s. 212-230
  • Konferensbidrag (refereegranskat)abstract
    • Recruiters today are often using some kind of tool with data mining and profiling, as an initial screening for successful candidates. Their objective is often to become more objective and get away from human limitation, such as implicit biases versus underprivileged groups of people. In this explorative analysis there have been three potential problems identified, regarding the practice of using these predictive computer tools for hiring. First, that they might miss the best candidates, as the employed algorithms are tuned with limited and outdated data. Second, is the risk of directly or indirectly discriminate candidates, or, third, failure to give equal opportunities for all individuals. The problems are not new to us, and from this theoretical analysis and from other similar work; it seems that algorithms and predictive data mining tools have similar kinds of implicit biases as humans. Our human limitations, then, does not seem to be limited to us humans.
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586.
  • Persson, Anders, et al. (författare)
  • Improved optogalvanic detection with voltage biased Langmuir probes
  • 2014
  • Ingår i: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 116:24, s. 243301-
  • Tidskriftsartikel (refereegranskat)abstract
    • Optogalvanic detectors show great potential for infrared spectroscopy, especially in cavity enhanced techniques where they, in contrast to ordinary absorption detectors, can perform intracavity measurements. This enables them to utilize the signal-to-noise ratio improvement gained from the extended effective path length inside an optical cavity, without losing signal strength due to the limited amount of light exiting through the rear mirror. However, if optogalvanic detectors are to become truly competitive, their intrinsic sensitivity and stability has to be improved. This, in turn, requires a better understanding of the mechanisms behind the generation of the optogalvanic signal. The study presented here focuses on an optogalvanic detector based on a miniaturized stripline split-ring resonator plasma source equipped with Langmuir probes for detecting the optogalvanic signal. In particular, the effect of applying a constant bias voltage to one of the probes is investigated, both with respect to the sensitivity and stability, and to the mechanism behind the generation of the signal. Experiments with different bias voltages at different pressures and gas composition have been conducted. In particular, two different gas compositions (pure CO2 and 0.25% CO2 in 99.75% N-2) at six different pressures (100 Pa to 600 Pa) have been studied. It has been shown that probe biasing effectively improves the performance of the detector, by increasing the amplitude of the signal linearly over one order of magnitude, and the stability by about 40% compared with previous studies. Furthermore, it has been shown that relatively straightforward plasma theory can be applied to interpret the mechanism behind the generation of the signal, although additional mechanisms, such as rovibrational excitation from electron-molecule collisions, become apparent in CO2 plasmas with electron energies in the 1-6 eV range. With the achieved performance improvement and the more solid theoretical framework presented here, stripline split-ring resonator optogalvanic detectors can evolve into a compact, inexpensive, and easy-to-operate alternative for future infrared spectrometers. (C) 2014 AIP Publishing LLC.
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587.
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588.
  • Persson, Anders (författare)
  • In the tension field between politics, practice and science - supervision of degree papers in the School of Teacher Education at Halmstad University, Sweden
  • 2009
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • In the teacher education programme at Halmstad University, Sweden, the supervision and examination of the students’ degree papers recently changed. Groups of students are now supervised by supervisor pairs, who in turn are part of a team that is coached by a colleague. The examination of the degree papers has also changed, in that the examination is conducted by someone outside the supervising team. Moreover, new evaluation criteria have been developed. These new criteria have sharpened the scientific requirements and clarified the requirements regarding its relevance to teaching practice. Finally, teachers, principals and other actors in preschools, primary schools and secondary schools have been engaged as co-reflectors whose role is to provide collegial comments on the education students’ theses. The present text is primarily intended to describe this new approach to supervising and examining degree theses. A secondary intention is to critically reflect on supervision and examination in the light of the unusually tension-filled character of the teacher education program, and of its unique academic culture.
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589.
  • Persson, Anders (författare)
  • Inblick: Glöden förtärde dem
  • 2002
  • Ingår i: Arbetarskydd. - 0346-7805. ; :9/2002
  • Tidskriftsartikel (populärvet., debatt m.m.)
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