Working Together: Integrating Computational Modeling Approaches to Investigate Complex Phenomena     

Bielik  Tom  Fonio  Ehud  Feinerman  Ofer  Duncan  Ravit Golan  Levy  Sharona T. 《Journal of Science Education and Technology》2021,30(1):40-57

Journal of Science Education and Technology - Complex systems are made up of many entities, whose interactions emerge into distinct collective patterns. Computational modeling platforms can provide...  相似文献   

Cytocompatible cellulose nanofibers from invasive plant species Agave americana L. and Ricinus communis L.: a renewable green source of highly crystalline nanocellulose     

Evdokimova  Olga L.  Alves  Carla S.  Krsmanović Whiffen  Radenka M.  Ortega  Zaida  Tomás  Helena  Rodrigues  João 《Journal of Zhejiang University. Science. B》2021,22(6):450-461

In this study, the fibers of invasive species Agave americana L. and Ricinus communis L. were successfully used for the first time as new sources to produce cytocompatible and highly crystalline cellulose nanofibers. Cellulose nanofibers were obtained by two methods, based on either alkaline or acid hydrolysis. The morphology, chemical composition, and crystallinity of the obtained materials were characterized by scanning electron microscopy(SEM) together with energy-dispersive X-ray spectroscopy(EDX), dynamic light scattering(DLS), X-ray diffraction(XRD), and Fourier transform infrared(FTIR)spectroscopy. The crystallinity indexes(CIs) of the cellulose nanofibers extracted from A. americana and R. communis were very high(94.1% and 92.7%, respectively). Biological studies evaluating the cytotoxic effects of the prepared cellulose nanofibers on human embryonic kidney 293 T(HEK293 T) cells were also performed. The nanofibers obtained using the two different extraction methods were all shown to be cytocompatible in the concentration range assayed(i.e., 0-500 μg/mL). Our results showed that the nanocellulose extracted from A. americana and R. communis fibers has high potential as a new renewable green source of highly crystalline cellulose-based cytocompatible nanomaterials for biomedical applications.  相似文献   

Labour market information and social justice: a critical examination     

Staunton  Tom  Rogosic  Karla 《International Journal for Educational and Vocational Guidance》2021,21(3):697-715

International Journal for Educational and Vocational Guidance - Labour Market Information forms a central place in career practice and how individuals enact their careers. This paper makes use of...  相似文献   

New power networks in educational technology     

Ben Williamson 《Learning, Media and Technology》2019,44(4):395-398

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Visions of change: information technology, education and postmodernism     

Tom Conlon 《British journal of educational technology : journal of the Council for Educational Technology》2000,31(2):109-116

The questions that dominate the discourse of IT in education are mostly at the technical or craft levels. Visionary questions relating to the purpose of education and the proper place of technology are not much discussed. This paper seeks to undermine the idea that such questions should be avoided. The context of postmodernist change is described and two contrasting visions of education are discussed. Each vision is a hypothetical but recognisable representation of certain trends in educational thinking. Each vision has appeal but also severe shortcomings. The paper concludes that unless teachers, learners and communities can articulate their own visions of educational change, new technology could take them into a future that they would never willingly have chosen.  相似文献   

Timing of Homework Completion vs. Performance in General Chemistry     

Cosio  Mario N.  Williamson  Vickie M. 《Journal of Science Education and Technology》2019,28(5):523-531

The goal of this study was to investigate the timing of online homework completion and its effects on student performance. Data was collected from two large, first-semester general chemistry sections at a southwestern university. Specifically, this study aims to explore the link between when students complete their homework relative to the date the material was covered in lecture and student performance in that class. Topics covered in the study included VSEPR, Lewis structures, and molecular geometry. Performance was measured by different variables, namely in-class clicker scores (short-term) and exam grade (long-term). Students were divided into three groups: students who completed the relevant homework within 2 days after the lecture (before the next lecture), those who completed the homework 2 to 4 days after the lecture, and students who completed the homework more than 4 days after the material was covered in lecture. The study also took into consideration student reasoning abilities, as measured by the Test of Logical Thinking (TOLT), with a focus on at-risk students (low TOLT students). Results showed promising findings for low TOLT students. Instructors can employ results from this study to help their students better utilize the online homework resources.

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Part‐time First Degree Courses of the Council for National Academic Awards     

Tom Bourner 《Educational studies》1983,9(1):17-30

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The Research and Development in Organisations Approach and the Evaluation of a Mainstream Behaviour Support Initiative     

Paul Timmins  Deborah Shepherd  Tom Kelly 《Educational Psychology in Practice》2003,19(3):229-242

This paper describes the evaluation of a local authority behaviour support initiative that involved the re-location of four behaviour support teachers from pupil referral units into three mainstream secondary schools to work with pupils at risk of exclusion. The evaluation was largely illuminative (Parlett, 1981) and focused on the effect of changing off-site behaviour support to in-school support. The research approach taken incorporated a Co-operative Inquiry strand (Heron, 1996) where researchers and behaviour support teachers worked together to design major aspects of the research process. This enabled research outcomes to inform educational practice, and gave a reflective, formative aspect to the study. The overall approach to the design of the study was informed by the Research and Development in Organisations (RADIO) model developed by Knight and Timmins (1995). The application of this approach in the context of the study is described along with a brief account of the findings. Finally, brief comment is made on the way in which the RADIO approach might contribute to educational psychologists' work at the local education authority and whole school levels.  相似文献   

Critical Viewing of Television News: the impact of a Dutch schools television project     

Marcel W. Vooijs  Tom H.A. Van Der Voort  Jacqueline Hoogeweij 《Learning, Media and Technology》1995,21(1):23-35

Using a quasi‐experimental pretest‐posttest control group design, the study investigated the educational effects of a six‐programme schools television series designed to teach children aged 10‐12 that television news broadcasts give a selective and thus subjective and incomplete impression of the news. Results indicated that the schools television series led to an increase in children's knowledge of the selection processes involved in the production of news programmes, and an increase in children's proficiency in recognizing the moments of selection in news items. However, the television series did not result in a decrease in the level of credibility children attribute to television news broadcasts. The reason for the latter finding probably is that the series showed that the makers of news programmes are conscious of the selection processes involved in making news programmes and do their utmost to make the choices in the most responsible way possible. As a result, the series may have unintentionally created the impression that the problem of selectivity can be satisfactorily solved.  相似文献   

Review: The Post-Bureaucratic Organization: New Perspectives on Organizational Change.     

W. J. Williamson 《Technical Communication Quarterly》1996,5(3):336-341

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