The effects of testing procedure on critical fall height determination for third-generation synthetic turf

Test procedures and their accuracy in determining critical fall height (CFH) on sporting grounds are paramount to player safety. The procedure currently adopted for synthetic turf in Australian football [1] consists of four consecutive drops at various drop heights at three test locations on the sample. The quantity and packing of the infill in third-generation turf and the pooling effect of the rubber particles with consecutive drops suggests that the current standard protocol may need re-assessment. Therefore, the purpose of this pilot study was to investigate whether current methods of testing for CFH are appropriate for third-generation synthetic turf or whether an alternative or adapted method needs to be developed. CFH was measured, using a HISUN Uniaxe-II Impact Tester, on 12 combinations of synthetic turf samples (four different products with three shock pad options). Three conditions were investigated on each sample; the existing protocol; an alternative 12 single-drop protocol and four single drops from the CFH determined from the existing protocol. A significant difference was found for both absolute and percentage difference between the existing and 12 single-drop protocol, with p = 0.001 and t = 4.33 and p < 0.001 and t = 6.03, respectively. There was also a significant difference between the CFH reached with and without a shock pad for both the existing protocol and the 12 single-drop protocol. The results of this pilot study demonstrate that differences do occur with alterations to the existing protocol and highlight the need for a more detailed characterisation of testing methods on third-generation synthetic turf and the response of surfaces to them.     

Integrated carbon fiber electrodes within hollow polymer microneedles for transdermal electrochemical sensing

In this study, carbon fiber electrodes were incorporated within a hollow microneedle array, which was fabricated using a digital micromirror device-based stereolithography instrument. Cell proliferation on the acrylate-based polymer used in microneedle fabrication was examined with human dermal fibroblasts and neonatal human epidermal keratinocytes. Studies involving full-thickness cadaveric porcine skin and trypan blue dye demonstrated that the hollow microneedles remained intact after puncturing the outermost layer of cadaveric porcine skin. The carbon fibers underwent chemical modification in order to enable detection of hydrogen peroxide and ascorbic acid; electrochemical measurements were demonstrated using integrated electrode-hollow microneedle devices.     

Note-taking within MetaTutor: interactions between an intelligent tutoring system and prior knowledge on note-taking and learning

Hypermedia learning environments (HLE) unevenly present new challenges and opportunities to learning processes and outcomes depending on learner characteristics and instructional supports. In this experimental study, we examined how one such HLE—MetaTutor, an intelligent, multi-agent tutoring system designed to scaffold cognitive and metacognitive self-regulated learning (SRL) processes—interacts with learner’s prior domain knowledge to affect their note-taking activities and subsequent learning outcomes. Sixty (N = 60) college students studied with MetaTutor for 120 min and took notes on hypermedia content of the human circulatory system. Log-files and screen recordings of learner-system interactions were used to analyze notes for several quantitative and qualitative variables. Results show that most note-taking was a verbatim copy of instructional content, which negatively related to the post-test measure of learning. There was an interaction between prior knowledge and pedagogical agent scaffolding, such that low prior knowledge students took a greater quantity of notes compared to their high prior knowledge counterparts, but only in the absence of MetaTutor SRL scaffolding; when agent SRL scaffolding was present, the note-taking activities of low prior knowledge students were statistically equivalent to the number of notes taken by their high prior knowledge counterparts. Theoretical and instructional design implications are discussed.     

An Ounce of Good Assessment is Worth a Pound of Analysis and a Ton of Cure

While it is conventional and comfortable to start professional performance improvement with analysis, doing so might make us wrong about 80% to 90% of the time. Analysis and cure, using Harless's (1975) immortal insight, are vital, but starting there is problematic. First do an assessment to justify where the organization is headed (and why go there) and then analysis and cure will be powerful.     

Defining student diversity: categorizing and processes of marginalization in Swedish schools

The article presents an analysis of how diversity is defined and attended to in Swedish schools. The research reported has been carried out as a case study of categorizing practices that concern the uses of neuropsychiatric diagnoses, notably ADHD. The data were collected as part of a larger study. The interaction over a two-year period between the parents of a boy (William, aged 5.5 years) and representatives of the school (school psychologist, principal, teacher etc.) has been analysed. It is shown that parents and professionals provide different accounts of William’s difficulties. The parents, while not denying that their son causes problems in class, argue that the boy will mature and that the problems will disappear. The representatives of the school try to convince the parents that a neuropsychiatric examination of the boy will be beneficial to all parties. The long process of negotiation can be understood as a rhetorical drama, where the category ‘ADHD’ serves as the resolution of a complex institutional problem in the modern welfare state.     

The education of children with special educational needs in England

In the last few years, the Warnock Report and the 1981 Education Act have had a major effect on the education of children with special educational needs in English schools. This paper discusses the main points of the Report and the subsequent legislation and then takes examples of three local educational authorities — Leicestershire, Coventry, and Barnsley — to illustrate the range of responses that have been made. Although there is obvious overlap, the three approaches are rather different in emphasis and illustrate the ways in which an educational system based on local autonomy can respond to proposals and legislation made at national level.

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Zusammenfassung Der Warnock Report und das Schulgesetz von 1981 haben an englischen Schulen erheblichen Einfluß auf die Erziehung von Kindern ausgeübt, die einer Sonderschulerziehung bedürfen. Der vorliegende Artikel behandelt die in dem Warnock Report hervorgehobenen Schwerpunkte und die daraus hervorgegangene Gesetzgebung. Um die Verschiedenartigkeit der Reaktionen aufzuzeigen, werden Beispiele von drei kommunalen Erziehungsbehörden (local education authorities) aus Leicestershire, Coventry und Barnsley angeführt. Trotz offensichtlicher Überschneidungen unterscheiden sich die drei o.a. Ansätze in ihrer Akzentuierung; sie zeigen, wie ein auf lokaler Autonomie basierendes Erziehungssystem auf Vorschläge und Gesetzgebung reagieren kann, die auf nationaler Ebene Gültigkeit haben sollen.

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Résumé Au cours des dernières années, le rapport Warnock et la Loi de 1981 sur l'Education ont eu une répercussion remarquable sur l'éducation des enfants ayant des besoins éducatifs spéciaux en Angleterre. Cet article traite les principaux points du rapport et de la législation subséquente et cite en exemples trois autorités éducatives locales — Leicestershire, Coventry et Barnsley — pour illustrer les différentes réponses qui ont été données. Bien que les trois approches se chevauchent clairement, elles se focalisent sur des points plutôt différents, et illustrent les façons dont un système éducatif basé sur une autonomie locale peut répondre aux propositions et à la législation émanant du niveau national.

     

Curriculum Lessons from Europe?

Next year Britain will enter the Single European Market. This may encourage greater alignment of special educational legislation here with the laws in other member countries. Roger Merry, senior lecturer in education, School of Education, Leicester University, asks what lesson can be learned from practice in Europe, especially in relation to the National Curriculum.