Letters to the editor     

Ray E. Helfer 《Child abuse & neglect》1983,7(3):369-372

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Comments     

Jacques Hallak  Ray Bolam  David Court 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1975,21(1):32-39

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Editorial comment     

Ray E. Helfer 《Child abuse & neglect》1982,6(3):247

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The development of problem solving abilities in secondary school chemistry     

Eabl J. Montague  Ray M. Ward 《科学教学研究杂志》1967,5(4):354-357

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The Rural School and the Creation of Modern Attitudes: a Venezuelan case[1]     

Ray A. Chesterfield 《Compare》1978,8(2):167-173

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Attracting university professors to interior cities in Brazil: Individual perceptions as a basis for educational planning     

Ray Chesterfield  Wayne T. Enders  Nilton Bueno Fischer 《Higher Education》1978,7(4):405-416

One of the difficulties in Latin American development is attracting highly qualified professionals to interior cities with growth potential. Also, as in most less developed countries of the world, this is accompanied by a tendency toward a permanent ruralurban migration of the existing, more qualified personnel, leaving interior regions deficient in an important development resource. In this study a culturally versatile method to identify perceived desirable characteristics of cities as places to work and live is proposed. A triadic selection procedure and factor analysis are employed with a case study sample of graduate students in Rio Grande do Sul, Brazil. The results show that there are four major categories of attributes (population, economic, cultural, and physical) which could be used as incentives to attract people to medium sized interior cities in developing countries. Various ways in which the local university could be employed in such strategies are presented as examples of planning possibilities.  相似文献   

Antioxidant activity of ethanol extract of rhizome ofPicrorhiza kurroa on indomethacin induced gastric ulcer during healing     

Arun Ray  Susri Ray Chaudhuri  Biswajit Majumdar  Sandip K. Bandyopadhyay 《Indian journal of clinical biochemistry : IJCB》2002,17(2):44-51

Oral administration of ethanol extract of the rhizome ofPirorhiza kurroa at a dose of 20mg/kg body weight, for 10 consecutive days, was found to enhance the rate of healing on Indomethacin-induced gastric ulcer in rats, compared to the ulcerated group without treatment. The level of peroxidised lipid, in terms of thiobarbituric acid reactive species (TBARS), in gastric tissue, was increased in ulcerated rats which was restored to near normalcy on treatment with ethanol extract. The specific activity ofin vivo antioxidant enzymes, viz SOD and catalase and total tissue sulfhydryl (thiol) group, which were markedly decreased in ulcerated group, were found to be significantly elevated (p<0.05), on treatment with the above extract, at the specified dose, compared to the indomethacin—induced ulcerated group without any supporting treatment. The present study thus suggests that the ethanol extract of rhizome ofPicrorhiza kurroa, at the dose of 20mg/kg body weight, accelerated the healing of stomach wall of indomethacin induced gastric ulcerated rats by anin vivo free radical scavenging action.  相似文献   

An optimum non-circular chainwheel design for a bicycle drive system     

Ray P. S. Han  Karen L. Alexander 《Journal of The Franklin Institute》1993,330(6)

A new and systematic approach for the analysis and simulation of a non-circular chainwheel in a bicycle drive system is presented. The proposed leg-bicycle model is based on a five-bar linkage and explicit expressions for the kinematics and kinetics are derived. The generated shape of the chainwheel is smoothed to an ellipse, for practical reasons. The performance of this elliptical chainwheel is assessed by comparing the joint moments, leg angular accelerations, crank angular velocities, crank angular accelerations and output forces with those of a conventional circular chainwheel. The results suggest combining the elliptical and circular chainwheels into a single unit, in order to accommodate a wide range of pedalling speeds. At low speeds, the elliptical chainwheel is engaged, but as the speed increases, a switch over to the circular chainwheel is recommended.  相似文献   

Do You Want to Know What I Learned? Using Informational Trade Books as Models to Teach Text Structure     

Sylvia Read  D. Ray Reutzel  Parker C. Fawson 《Early Childhood Education Journal》2008,36(3):213-219

Informational text is an important resource for classroom teachers that places unique comprehension demands on young students. Research on teaching expository text structure to young children shows that explicit instruction improves student comprehension. This practical article addresses how to use “well-structured” expository trade book titles to teach text structure. A lesson plan template and an extended example of an explicit lesson on order/sequence are provided.  相似文献   

Addressing Health Disparities in the Undergraduate Curriculum: An Approach to Develop a Knowledgeable Biomedical Workforce     

Rocio Benabentos  Payal Ray  Deepak Kumar 《CBE life sciences education》2014,13(4):636-640

Disparities in health and healthcare are a major concern in the United States and worldwide. Approaches to alleviate these disparities must be multifaceted and should include initiatives that touch upon the diverse areas that influence the healthcare system. Developing a strong biomedical workforce with an awareness of the issues concerning health disparities is crucial for addressing this issue. Establishing undergraduate health disparities courses that are accessible to undergraduate students in the life sciences is necessary to increase students’ understanding and awareness of these issues and motivate them to address these disparities during their careers. The majority of universities do not include courses related to health disparities in their curricula, and only a few universities manage them from their life sciences departments. The figures are especially low for minority-serving institutions, which serve students from communities disproportionally affected by health disparities. Universities should consider several possible approaches to infuse their undergraduate curricula with health disparities courses or activities. Eliminating health disparities will require efforts from diverse stakeholders. Undergraduate institutions can play an important role in developing an aware biomedical workforce and helping to close the gap in health outcomes.  相似文献