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| 3. |
- Baskar, K., et al.
(författare)
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Surface morphology and localised states of GaInNAs single quantum wells grown by MOVPE
- 2003
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Ingår i: Journal of Crystal Growth. - 0022-0248 .- 1873-5002. ; 248, s. 431-436
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Tidskriftsartikel (refereegranskat)abstract
- GaInNAs/GaAs single quantum wells (QWs) have been grown by metalorganic vapour phase epitaxy (MOVPE). The surface morphology has been studied by atomic force microscopy (AFM). The density of pits observed on the surface of QW structures was found to depend on the growth temperature and dimethylhydrazine (DMHy) flow. Cross-sectional AFM image showed the presence of defects at the interface of GaInNAs/GaAs. The low temperature photoluminescence characteristics of the QWs as a function of growth temperature. DMHy flow and density of surface pits have been discussed. The origin of pit formation is addressed based on the pyrolysis products present during the growth of QWs. The results suggest that higher growth temperature maybe desirable to obtain good quality GaInNAs QWS.
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| 4. |
- Berndtsson, Rolf, 1936-
(författare)
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Om folkhögskolans dynamik : Möten mellan olika bildningsprojekt
- 2000
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This study is describing the projects of Bildung which are possible to identify with the students and the teachers at two folk high schools and the meeting between those projects in the classrooms. Another purpose is to describe and analyze processes, which arise when teachers, students and folk high school as an institution come together. As a background and part of the study, connected to the central concept of the thesis - power and Bildung - is an account of the projects of Bildung which have been developed within the folk high school in a historical perspective. It is the generally oriented course and the students that are in focus.The study is part of an ethnographic research tradition and the empirical part of the study consists of a combination of qualitative interviews with the teachers and the students and participant observation.The projects of Bildung, which I have found represented by the students are “selfeducation” with the subgroups "self-development" and "self-rehabilitation" and "the project of qualification". Most of the teachers try to establish an attitude that has a self-educational direction but gradually the teachers are forced to let the qualification project get a more prominent part in the teaching. The projects of Bildung are changing and are in contrast to each other, sometimes in harmony and sometimes out of balance. I found that the study setting could be characterized by manifoldness and dynamics. A pluralism resulting in challenges and different processes.
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| 5. |
- Briand, D., et al.
(författare)
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Modulated operating temperature for MOSFET gas sensors : Hydrogen recovery time reduction and gas discrimination
- 2003
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Ingår i: Sensors and actuators. B, Chemical. - 0925-4005 .- 1873-3077. ; 93:1-3, s. 276-285
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This communication presents a modulated mode of operation for MOSFET gas sensors. A low-power micromachined device allows pulsing the temperature of MOSFET gas sensors with a time constant less than 100ms. Modulating the temperature during the gas exposure modifies the kinetics of the gas reactions with the sensing film. The way the sensor response is modified by the temperature modulation depends on the sensor "history", on the nature of the surrounding gaseous atmosphere, and on the type of materials used as catalytic sensing film. Pulsing the temperature up just after the gas exposure can reduce the recovery time for specific applications, such as for hydrogen detection. Cycling the temperature can allow the discrimination between different gas mixtures. Discrimination was shown for gaseous mixtures of hydrogen and ammonia in air. The results obtained indicate that a "smart" combination of sample and temperature profile could be used to expand the information content in the sensor response. © 2003 Elsevier Science B.V. All rights reserved.
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| 6. |
- Coorevits, Pascal, et al.
(författare)
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Electronic health records : new opportunities for clinical research
- 2013
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Ingår i: Journal of Internal Medicine. - : Wiley-Blackwell. - 0954-6820 .- 1365-2796. ; 274:6, s. 547-60
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Tidskriftsartikel (refereegranskat)abstract
- Clinical research is on the threshold of a new era in which electronic health records (EHRs) are gaining an important novel supporting role. Whilst EHRs used for routine clinical care have some limitations at present, as discussed in this review, new improved systems and emerging research infrastructures are being developed to ensure that EHRs can be used for secondary purposes such as clinical research, including the design and execution of clinical trials for new medicines. EHR systems should be able to exchange information through the use of recently published international standards for their interoperability and clinically validated information structures (such as archetypes and international health terminologies), to ensure consistent and more complete recording and sharing of data for various patient groups. Such systems will counteract the obstacles of differing clinical languages and styles of documentation as well as the recognized incompleteness of routine records. Here, we discuss some of the legal and ethical concerns of clinical research data reuse and technical security measures that can enable such research while protecting privacy. In the emerging research landscape, cooperation infrastructures are being built where research projects can utilize the availability of patient data from federated EHR systems from many different sites, as well as in international multilingual settings. Amongst several initiatives described, the EHR4CR project offers a promising method for clinical research. One of the first achievements of this project was the development of a protocol feasibility prototype which is used for finding patients eligible for clinical trials from multiple sources.
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| 7. |
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De ledande orden : Skolledning, språk och förhandling
- 2006
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Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Humanvetenskaperna talar om den "den språkliga vändningen". Kunskapen om världen är, i det ljuset, en symbolisk konstruktion, inte ett "faktum". Här riktas uppmärksamheten mot hur föreställningarna om "skolledning" konstrueras i språket; i de ständigt pågående förhandlingarna mellan skolchefer, rektorer, lärare och allmänhet. På olika arenor i och utanför skolan ges ledningen legitimitet. Boken vänder sig till alla som vill utforska hur "ledning" skapas, språkligt och socialt, i och utom skolan.
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| 9. |
- Essen, Johan von, et al.
(författare)
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En mosaik av mening
- 2012
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Ingår i: En mosaik av mening. - Göteborg : Daidalos. - 9789171733634 ; , s. 11-20
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Bokkapitel (refereegranskat)
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| 10. |
- Essen, Johan von, et al.
(författare)
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Mening på marknad?
- 2012
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Ingår i: En mosaik av mening. - Göteborg : Daidalos. - 9789171733634 ; , s. 277-298
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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