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- Andersson, Per, et al.
(författare)
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The Configuration Of Actors In Market Practice
- 2009
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Ingår i: Marketing Theory. - : SAGE Publications (UK and US). - 1741-301X .- 1470-5931. ; 8:1, s. 67-90
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Tidskriftsartikel (refereegranskat)abstract
- This paper addresses three conceptual challenges concerning actors and agency that arise when taking interest in market practice: i) how agency is awarded in practical situations, ii) how actors are preconfigured, and iii) how actors are represented. These issues are explored in three empirical scenes taken from a case study of the introduction of an e-procurement system at an international transport and logistics company. First, we suggest that practical interaction can be fruitfully regarded as a process of interdefinition involving prescriptions and subscriptions between acting entities, or actants . Second, we employ the term inscription to address efforts to affect in advance the configuration of such actants. Third, we suggest that actors are entities to which actions are ascribed, ex post . Through this secondary process a number of actants may be subsumed under a common actor label, thus offering a way of accounting for agency as part of a practice perspective. We conclude by discussing implications of the proposed vocabulary for multiplicity, reflexivity and market agency.
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| 4. |
- Sun, Mengtao, et al.
(författare)
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Control of emission by intermolecular fluorescence resonance energy transfer and intermolecular charge transfer
- 2006
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Ingår i: The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory. - : American Chemical Society (ACS). - 1520-5215. ; 110:19, s. 6324-6328
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Tidskriftsartikel (refereegranskat)abstract
- Control of emission by intermolecular fluorescence resonant energy transfer (IFRET) and intermolecular charge transfer (ICT) is investigated with the quantum-chemistry method using two-dimensional (2D) and three-dimensional (3D) real space analysis methods. The work is based on the experiment of tunable emission from doped 1,3,5-triphenyl-2-pyrazoline (TPP) organic nanoparticles (Peng, A. D.; et al. AdV. Mater. 2005, 17, 2070). First, the excited-state properties of the molecules, which are studied (TPP and DCM) in that experiment, are investigated theoretically. The results of the 2D site representation reveal the electron-hole coherence and delocalization size on the excitation. The results of 3D cube representation analysis reveal the orientation and strength of the transition dipole moments and intramolecular or intermolecular charge transfer. Second, the photochemical quenching mechanism via IFRET is studied (here "resonance" means that the absorption spectrum of TPP overlaps with the fluorescence emission spectrum of DCM in the doping system) by comparing the orbital energies of the HOMO (highest occupied molecular orbital) and the LUMO (lowest unoccupied molecular orbital) of DCM and TPP in absorption and fluorescence. Third, for the DCM-TPP complex, the nonphotochemical quenching mechanism via ICT is investigated. The theoretical results show that the energetically lowest ICT state corresponds to a pure HOMO-LUMO transition, where the densities of the HOMO and LUMO are strictly located on the DCM and TPP moieties, respectively. Thus, the lowest ICT state corresponds to an excitation of an electron from the HOMO of DCM to the LUMO of TPP.
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- Sydsjö, Gunilla, et al.
(författare)
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Knowledge of reproduction in teenagers and young adults in Sweden
- 2006
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Ingår i: European journal of contraception & reproductive health care. - : Informa UK Limited. - 1362-5187 .- 1473-0782. ; 11:2, s. 117-125
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To investigate the knowledge of reproductive physiology and anatomy among adolescents and young adults in Sweden, and to evaluate the education obtained on these issues. Methods: Two hundred and nine study specific questionnaires were distributed, of which 206 were answered by students in primary school, upper secondary school and at first year of university. A total knowledge score based on 21 out of the 35 questions in the questionnaire was calculated. As only 44 of the 206 respondents answered all the questions a revised score was also calculated, in which partial dropouts were interpreted as wrong answers. Results: The mean of the total knowledge score was 28.7 out of 54 among the 44 respondents answering all questions, and the revised knowledge score was 24.0. The level of knowledge tended to be higher in older age groups, among women, as well as among respondents who had visited a Youth clinic. The time of ovulation was known by 21.4% of men compared to 63.4% of women. Almost 50% of the students knew one mechanism whereby oral contraceptives act to protect against pregnancy. Of the respondents, 77.2% knew of Chlamydia trachomatis but the knowledge of other STIs, like condyloma, was poorer (16.5%). Reasons for infertility were relatively well known among the respondents. Of the respondents, 57.5% stated that they had not received enough information on reproductive issues. Conclusions: The students have not achieved sufficient knowledge concerning sexual and reproductive matters that they, according to the national curriculum, should have attained by the end of the 9th grade. An improvement of the quality of the education, adapted to the students' age and pre-existing knowledge, and a review of the contents of the education is therefore needed. © 2006 European Society of Contraception.
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