319 research outputs found

    Zelfregulatie in het beroepsonderwijs: Een kans voor succes

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    Jossberger, H., Brand-Gruwel, S., Boshuizen, H. P. A., & Van de Wiel, M. (2010, June). Zelfregulatie in het beroepsonderwijs: Een kans voor succes [Self-direction in vocational education: A chance for succes]. Paper presentation at Onderwijs Research Dagen [Educational Research Days], Enschede, The Netherlands.Het doel van deze studie is het ontrafelen van generieke vaardigheden van zelfgestuurd en zelfregulerend leren en het onderzoeken van microprocessen met betrekking tot planning, monitoren en evalueren in WPS. Achttien eerstejaars mbo leerlingen van de Landbouw, Techniek en Zorg sector namen deel. De data uit de observaties alsook de informatie verkregen in de interviews laat zien dat leerlingen zelfregulatie vaardigheden toepassen bij het uitvoeren van taken in de praktijk. De interactie van leerlingen met peers en de leraar stond centraal in de presentatie.NWO project 411-05-20

    The quest for self-regulation: A design-based approach with vocational teachers

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    Jossberger, H., Brand-Gruwel, S., Boshuizen, H. P. A., & Van de Wiel, M. (2010, August). The quest for self-regulation: A design-based approach with vocational teachers. Poster presentation at the EARLI Learning and Professional Development SIG Conference, Munich, Germany.In this design-based research study, we join in with vocational teachers and investigate how we can diminish obstacles and optimise students’ self-regulated learning and motivation in pre-vocational secondary education by better understanding the connection between teaching and learning in workplace simulations. The design of authentic and challenging learning tasks that provide students with a clear goal, visible assessment and performance criteria is suggested to be an important starting point. Moreover, direct feedback from the teacher on task level, process level, self-regulated learning level, and self level can reduce the discrepancy between current understanding and performance and promote self-regulated learning and motivation. Method triangulation is used for gathering data, including observations, logbooks of teachers, and questionnaires for students. This research is still in progress, but the set up promises a practice oriented approach, in which teachers are actively involved.NWO project number 411-05-20

    Monitoring: A Strategy to Detect Imminent Mistakes

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    Jossberger, H., Brand-Gruwel, S., Boshuizen, H. P. A., & Van de Wiel, M. (2010, August). Monitoring: A strategy to detect imminent mistakes. In D. Sembill (Chair), Human Fallibility: The Ambiguity of Errors for Work and Learning. Symposium conducted at the EARLI Learning and Professional Development SIG Conference, Munich, Germany.The aim of this empirical study was to unravel generic self-regulated learning behaviours and to seek to investigate micro processes of planning, monitoring, and evaluating in workplace simulations. Eighteen students from upper secondary vocational education participated. Students were observed during a practical lesson and interviewed afterward to gain detailed insights into their behaviours, thoughts, and (inter)actions. Information was collected on the way they executed a task, how they dealt with problems and mistakes and why they interacted with peers or the teacher. Students self-regulated during task execution. Monitoring appeared to be an activity that was regularly executed by keeping a close eye on the product students were working on. Teachers were consulted when students had doubts and needed confirmation or when they wanted more information. They consulted their peers when they wanted to get a faster answer and thought that this peer had enough knowledge to help them out.NWO project number 411-05-20

    Diphenyleneiodonium acutely inhibits reactive oxygen species production by mitochondrial complex I during reverse, but not forward electron transport

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    AbstractWe investigated the effects of diphenyleneiodonium (DPI) on superoxide production by complex I in mitochondria isolated from rat skeletal muscle. Superoxide production was measured indirectly as hydrogen peroxide production. In a conventional medium containing chloride, DPI strongly inhibited superoxide production by complex I driven by reverse electron transport from succinate. In principle, this inhibition could be explained by an observed decrease in the mitochondrial pH gradient caused by the known chloride–hydroxide antiport activity of DPI. In a medium containing gluconate instead of chloride, DPI did not affect the pH gradient. In this gluconate medium, DPI still inhibited superoxide production driven by reverse electron transport, showing that the inhibition of superoxide production was not dependent on changes in the pH gradient. It had no effect on superoxide production during forward electron transport from NAD-linked substrates in the presence of rotenone (to maximise superoxide production from the flavin of complex I) or antimycin (to maximise superoxide production from complex III), suggesting that the effects of DPI were not through inhibition of the flavin. We conclude that DPI has the novel and potentially very useful ability to prevent superoxide production from the site in complex I that is active during reverse electron transport, without affecting superoxide production during forward electron transport

    Structure and phase transition in BaThO3: A combined neutron and synchrotron X-ray diffraction study

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    The structure of BaThO3, obtained by solid state synthesis, was refined for the first time by the Rietveld method using a combination of synchrotron X-ray and neutron powder diffraction data. BaThO3 has an orthorhombic structure at room temperature, in space group Pbnm with a = 6.3491(5), b = 6.3796(4) and c = 8.9907(7) Å. Heating BaThO3 to above 700 °C results in a continuous transition to a second orthorhombic structure, in space group Ibmm, demonstrated by both in situ neutron and synchrotron X-ray powder diffraction measurements. The coefficient of volumetric thermal expansion for BaThO3 is determined to be 1.04 x 10-5 oC-1 from 50 to 625 oC (Pbnm phase), and 9.43 x 10-6 oC-1 from 800 to 1000 oC (Ibmm phase). BaThO3 was found to decompose upon exposure to atmospheric moisture resulting in the formation of ThO2. The thermal expansion of ThO2, which invariably co-exists with BaThO3, is also described.Australian Synchrotron Australian Research Council2019-12-1

    Structure and phase transition in BaThO3: A combined neutron and synchrotron X-ray diffraction study

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    The structure of BaThO3, obtained by solid state synthesis, was refined for the first time by the Rietveld method using a combination of synchrotron X-ray and neutron powder diffraction data. BaThO3 has an orthorhombic structure at room temperature, in space group Pbnm with a = 6.3491(5), b = 6.3796(4) and c = 8.9907(7) Å. Heating BaThO3 to above 700 °C results in a continuous transition to a second orthorhombic structure, in space group Ibmm, demonstrated by both in situ neutron and synchrotron X-ray powder diffraction measurements. The coefficient of volumetric thermal expansion for BaThO3 is determined to be 1.04 x 10-5 oC-1 from 50 to 625 oC (Pbnm phase), and 9.43 x 10-6 oC-1 from 800 to 1000 oC (Ibmm phase). BaThO3 was found to decompose upon exposure to atmospheric moisture resulting in the formation of ThO2. The thermal expansion of ThO2, which invariably co-exists with BaThO3, is also described.Australian Synchrotron Australian Research Counci

    From programme theory to logic models for multispecialty community providers: a realist evidence synthesis

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    BackgroundThe NHS policy of constructing multispecialty community providers (MCPs) rests on a complex set of assumptions about how health systems can replace hospital use with enhanced primary care for people with complex, chronic or multiple health problems, while contributing savings to health-care budgets.ObjectivesTo use policy-makers’ assumptions to elicit an initial programme theory (IPT) of how MCPs can achieve their outcomes and to compare this with published secondary evidence and revise the programme theory accordingly.DesignRealist synthesis with a three-stage method: (1) for policy documents, elicit the IPT underlying the MCP policy, (2) review and synthesise secondary evidence relevant to those assumptions and (3) compare the programme theory with the secondary evidence and, when necessary, reformulate the programme theory in a more evidence-based way.Data sourcesSystematic searches and data extraction using (1) the Health Management Information Consortium (HMIC) database for policy statements and (2) topically appropriate databases, including MEDLINE, MEDLINE In-Process & Other Non-Indexed Citations, PsycINFO, the Cumulative Index to Nursing and Allied Health Literature (CINAHL) and Applied Social Sciences Index and Abstracts (ASSIA). A total of 1319 titles and abstracts were reviewed in two rounds and 116 were selected for full-text data extraction. We extracted data using a formal data extraction tool and synthesised them using a framework reflecting the main policy assumptions.ResultsThe IPT of MCPs contained 28 interconnected context–mechanism–outcome relationships. Few policy statements specified what contexts the policy mechanisms required. We found strong evidence supporting the IPT assumptions concerning organisational culture, interorganisational network management, multidisciplinary teams (MDTs), the uses and effects of health information technology (HIT) in MCP-like settings, planned referral networks, care planning for individual patients and the diversion of patients from inpatient to primary care. The evidence was weaker, or mixed (supporting some of the constituent assumptions but not others), concerning voluntary sector involvement, the effects of preventative care on hospital admissions and patient experience, planned referral networks and demand management systems. The evidence about the effects of referral reductions on costs was equivocal. We found no studies confirming that the development of preventative care would reduce demands on inpatient services. The IPT had overlooked certain mechanisms relevant to MCPs, mostly concerning MDTs and the uses of HITs.LimitationsThe studies reviewed were limited to Organisation for Economic Co-operation and Development countries and, because of the large amount of published material, the period 2014–16, assuming that later studies, especially systematic reviews, already include important earlier findings. No empirical studies of MCPs yet existed.ConclusionsMultidisciplinary teams are a central mechanism by which MCPs (and equivalent networks and organisations) work, provided that the teams include the relevant professions (hence, organisations) and, for care planning, individual patients. Further primary research would be required to test elements of the revised logic model, in particular about (1) how MDTs and enhanced general practice compare and interact, or can be combined, in managing referral networks and (2) under what circumstances diverting patients from in-patient to primary care reduces NHS costs and improves the quality of patient experience.Study registrationThis study is registered as PROSPERO CRD42016038900.FundingThe National Institute for Health Research (NIHR) Health Services and Delivery Research programme and supported by the NIHR Collaboration for Leadership in Applied Health Research and Care South West Peninsula

    Crystal structure and magnetic modulation in β−Ce2O2FeSe2

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    We report a combination of X-ray and neutron diffraction studies, Mossbauer spectroscopy and muon spin relaxation (muSR) measurements to probe the structure and magnetic properties of the semiconducting beta-Ce2O2FeSe2 oxychalcogenide. We report a new structural description in space group Pna21 which is consistent with diffraction data and second harmonic generation measurements and reveal an order-disorder transition on one Fe site at TOD ~ 330 K. Susceptibility measurements, Mossbauer and muSR reveal antiferromagnetic ordering below TN = 86 K and more complex short range order above this temperature. 12 K neutron diffraction data reveal a modulated magnetic structure with q = 0.444 bN*

    Samen in Zee met Zelfregulatie: Een Design-Based Aanpak met Vmbo Leraren

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    Jossberger, H., Brand-Gruwel, S., Boshuizen, H. P. A., & Van der Wiel, M. (2010, June). Samen in Zee met Zelfregulatie: Een Design-Based Aanpak met Vmbo Leraren. Poster presented at the 37th Onderwijs Research Dagen (ORD), Enschede, Nederland.In dit onderzoek gaan we met een ontwerpgerichte aanpak samen in zee met docenten om vanuit de theorie te kijken hoe zelfregulatie bij leerlingen in het vmbo geoptimaliseerd kan worden door onderwijzen en leren beter op elkaar af te stemmen. Daarbij speelt de docent een belangrijke rol.NWO project 411-05-20
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