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  • 1897 : Mediehistorier kring Stockholmsutställningen
  • 2006
  • Samlingsverk (redaktörskap) (övrigt vetenskapligt)abstract
    • När börjar mediehistorien? Mediehistoria var länge liktydigt med historien om 1900-talets massmedier  press, radio, teve och film. I den här boken skildras istället ett äldre medielandskap. Med utgångspunkt i Stockholmsutställningen 1897 beskriver författarna det utbud av gamla och nya medier som samlades på utställningen, från äldre attraktioner som camera obscura, dioramor och vaxfigurer till spektakulära nyheter som fonograf, kinematograf och röntgenbilder. Boken ger inblickar i några av det sena 1800-talets ledande medieindustrier, och diskuterar bland annat frågor om mediekonsumtion, publikpositioner och historiska medieringsvillkor. De medietekniker som presenterades på Stockholmsutställningen 1897 lagrade på samma gång utställningen för framtiden. Ett centralt tema är därför hur dessa medieringar blivit identiska med minnet av utställningen, och hur detta arkiv organiserats utifrån mediernas specifika egenskaper. På den DVD-skiva som medföljer boken har ett nytt mediearkiv skapats över Stockholmsutställningen 1897 och dess många länkar till en bredare mediekultur.
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4.
  • A Atlasov, Kirill, et al. (författare)
  • 1D photonic band formation and photon localization in finite-size photonic-crystal waveguides
  • 2010
  • Ingår i: OPTICS EXPRESS. - 1094-4087. ; 18:1, s. 117-122
  • Tidskriftsartikel (refereegranskat)abstract
    • A transition from discrete optical modes to 1D photonic bands is experimentally observed and numerically studied in planar photonic-crystal (PhC) L-N microcavities of length N. For increasing N the confined modes progressively acquire a well-defined momentum, eventually reconstructing the band dispersion of the corresponding waveguide. Furthermore, photon localization due to disorder is observed experimentally in the membrane PhCs using spatially resolved photoluminescence spectroscopy. Implications on single-photon sources and transfer lines based on quasi-1D PhC structures are discussed.
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5.
  • A.F. Da, Silva, et al. (författare)
  • Growth, electrical and optical properties of SnO2: F on ZnO, Si and porous Si structures
  • 2009
  • Ingår i: Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009. - CRC Press. - 978-1-4398-1782-7 ; s. 352-355
  • Konferensbidrag (refereegranskat)abstract
    • In this work we have analyzed the optical absorption of the ZnO and SnO2:F (FTO) films and applied them in porous silicon light-emitting diodes. The absorption and energy gap were calculated by employing the projector augmented wave method [1] within the local density approximation and with a modeled on-site self-interaction-like correction potential within the LDA+U SIC [2]. Experiment and theory show a good agreement when the optical absorption and optical energy gap are considered. A layer of FTO is deposited by spray pyrolysis on top of porous Si (PSi) or ZnO/(PSi) in order to make the LEDs. The morphology and roughness of the films are analyzed by Atomic Force Microscopy before and after the FTO deposition. The electrical and optical properties are studied by characteristics curves J × V, and electroluminescence intensity versus bias.
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6.
  • A Herrera, I, et al. (författare)
  • Comparing a multi-linear (STEP) and systemic (FRAM) method for accident analysis
  • 2010
  • Ingår i: RELIABILITY ENGINEERING and SYSTEM SAFETY. - Elsevier Science B.V., Amsterdam.. - 0951-8320. ; 95:12, s. 1269-1275
  • Tidskriftsartikel (refereegranskat)abstract
    • Accident models and analysis methods affect what accident investigators look for, which contributory factors are found, and which recommendations are issued. This paper contrasts the Sequentially Timed Events Plotting (STEP) method and the Functional Resonance Analysis Method (FRAM) for accident analysis and modelling. The main issue addressed in this paper is the comparison of the established multi-linear method STEP with the new systemic method FRAM and which new insights the latter provides for accident analysis in comparison to the former established multi-linear method. Since STEP and FRAM are based on a different understandings of the nature of accidents, the comparison of the methods focuses on what we can learn from both methods, how, when, and why to apply them. The main finding is that STEP helps to illustrate what happened, involving which actors at what time, whereas FRAM illustrates the dynamic interactions within socio-technical systems and lets the analyst understand the how and why by describing non-linear dependencies, performance conditions, variability, and their resonance across functions.
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7.
  • A Hulten, Maj, et al. (författare)
  • On the origin of the maternal age effect in trisomy 21 Down syndrome: the Oocyte Mosaicism Selection model
  • 2010
  • Ingår i: Reproduction. - 1470-1626. ; 139:1, s. 1-9
  • Forskningsöversikt (övrigt vetenskapligt)abstract
    • We have recently documented that trisomy 21 mosaicism is common in human foetal ovaries. On the basis of this observation we propose that the maternal age effect in Down syndrome (DS) is caused by the differential behaviour of trisomy 21 in relation to disomy 21 oocytes during development from foetal life until ovulation in adulthood. in particular, we suggest that trisomy 21 oocytes, lagging behind those that are disomic, may escape the timed pruning of the seven million in foetal life to the 300-400 finally selected for ovulation. The net effect of this preferential elimination will be an accumulation of trisomy 21 oocytes in the ovarian reserve of older women. We here highlight the implications of this Oocyte Mosaicism Selection (OMS) model with respect to the prevalent view that the maternal age effect is complex, dependent on many different biological and environmental factors. We examine conclusions drawn from recent large-scale studies in families, tracing DNA markers along the length of chromosome 21q between parents and DS children, in comparison to the OMS model. We conclude that these family linkage data are equally compatible with the maternal age effect originating from the accumulation of trisomy 21 oocytes with advancing maternal age. One relatively straightforward way to get to grips with what is actually going on in this regard would be to compare incidence of trisomy 21 oocytes (and their pairing configurations) in foetal ovaries with that in oocytes at the meiosis I stage from adult women.
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8.
  • A logistics framework for improving constructionsupply chain performance
  • 2013
  • Proceedings (redaktörskap) (övrigt vetenskapligt)abstract
    • In recent years, attention has been placed on the logistics activities in constructionprojects in order to reduce total costs. The construction industry is experiencing poorproductivity, resulting from an inability of contractors, subcontractors, and suppliersto cooperate efficiently. Research on logistics in construction lacks a holisticperspective and tends to focus on one activity at a time. This research presents theBuilder’s SCOR model (BSCOR) to be used for logistics improvements inconstruction. The model is based on the Supply Chain Operations Reference Model(SCOR model) covering the total supply chain. The BSCOR model is empiricallyderived through five case studies at different construction sites over a period of fiveyears. This has resulted in a model covering the activities Source, Build, and Plan,that describes the flow of materials to and on the site and how ownership passes to theclient. With the BSCOR model, contractors can map the material and informationflows between supply chain members with standardized process definitions. It is alsopossible to precisely measure the supply chain performance and to know where to putimprovements efforts. The main intention with the BSCOR model is to help theindustry reduce costs and increase productivity.
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10.
  • A.O., Tillmar, et al. (författare)
  • Using X-chromosomal markers in relationship testing: : How to calculate likelihood ratios taking linkage and linkage disequilibrium into account
  • 2011
  • Ingår i: Forensic Science International : Genetics. - Elsevier. - 1872-4973. ; 5:5, s. 506-511
  • Tidskriftsartikel (refereegranskat)abstract
    • X-chromosomal markers in forensic genetics have become more widely used during the recent years, particularly for relationship testing. Linkage and linkage disequilibrium (LD) must typically be accounted for when using close X-chromosomal markers. Thus, when producing the weight-of-evidence, given by a DNA-analysis with markers that are linked, the normally used product rule is invalid. Here we present an efficient model for calculating likelihood ratio (LR) with markers on the X-chromosome which are linked and in LD. Furthermore, the model was applied on several cases based on data from the eight X-chromosomal loci included in the Mentype® Argus X-8 (Biotype). Using a simulation approach we showed that the use of X-chromosome data can offer valuable information for choosing between the alternatives in each of the cases we studied, and that the LR can be high in several cases. We demonstrated that when linkage and LD were disregarded, as opposed to taken into account, the difference in calculated LR could be considerable. When these differences were large, the estimated haplotype frequencies often had a strong impact and we present a method to estimate haplotype frequencies. Our conclusion is that linkage and LD should be accounted for when using the tested set of markers, and the presented model is an efficient way of doing so.
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