儿童青少年运动员的营养需要     

Oded Bar-Or　Linda Houtkooper　Susan Barr　Anita Rivera-Brown　Michael Bergeron　Tom Rowland　Ruth Carey　Suzanne Steen　Priscilla Clarkson 《体育科学》2001,21(5):89-93

1. 儿童青少年运动员应该食用多样化的食物，其中，蛋白质应占膳食总能量的12％-15％，碳水化合物至少占55％，而脂肪至多占30％。日常生活中如何吃才能满足这些要求呢？膳食指南宝塔提供了一条可行之道。2.有些营养素对热爱运动的儿童青少年运动员非常重要，要保证摄入充足，这些营养素是碳水化合物（包括纤维素）、维生素B6、维生素D、铁、钙、镁、锌、铬。科学合理、包罗各类食物的平衡膳食，对青少年运动员最大程度地全面摄取各种营养素，满足生长发育和运动训练的需要，是非常必要的。3.鼓励儿童青少年运动员在运动训练前、中、后进行补液，以避免脱水的发生。4.如果膳食合理平衡，就没必要额外补充营养品。  相似文献   

Scholarly journal publishing in New Zealand     

Fytton Rowland 《Learned Publishing》2005,18(4):300-310

Learned societies and other non‐profit organizations in New Zealand publish scholarly journals in a number of disciplines, many of them subjects in which New Zealand has a particular economic interest. Although most of the journals are small, a surprising number of them have paid, rather than voluntary academic, editors. Some have launched electronic versions, but only one has experimented with open access (OA). In a number of cases this lack of interest in OA is because the society cannot see a business model that would render the society as a whole economically viable. Some of the smallest journals, published only annually, may have the most assured future because their operation is entirely voluntary.  相似文献   

Planning a master’s program in publishing     

Rowland Lorimer 《Publishing Research Quarterly》1990,6(1):38-47

The Canadian Centre for Studies in Publishing at Simon Fraser University is about to admit its first students. This article describes the founding of the Centre and the evolution of its curriculum. In its present form, the curriculum combines advice from the industry and the academic requirements of the university. Rowland Lorimer is professor of communication at Simon Fraser University. He is director of the Centre for Canadian Studies and co-director (Research and Credit Curriculum), Canadian Centre for Studies in Publishing. He is active in research in publishing policy and mass communications.  相似文献   

Cytotoxicity and effect of extraction methods on the chemical composition of essential oils of Moringa oleifera seeds     

Rowland Monday Ojo Kayode  Anthony Jide Afolayan 《Journal of Zhejiang University. Science. B》2015,16(8):680-689

Renewed interest in natural materials as food flavors and preservatives has led to the search for suitable essential oils. Moringa oleifera seed essential oil was extracted by solvent-free microwave and hydrodistillation. This study assessed its chemical constituents. Cytotoxicity of the oils was investigated using hatchability and lethality tests on brine shrimps. A total of 16 and 26 compounds were isolated from the hydrodistillation extraction (HDE) and solvent-free microwave extraction (SME) oils, respectively, which accounted for 97.515% and 97.816% of total identifiable constituents, respectively. At 24 h when the most eggs had hatched, values of the SME (56.7%) and HDE (60.0%) oils were significantly different (P<0.05) from those of sea water (63.3%) and chloramphenicol (15.0%). Larva lethality was different significantly (P<0.05) between HDE and SME oils at different concentrations and incubation periods. The median lethal concentration (LC₅₀) of the oils was >1000 mg/ml recommended as an index for non-toxicity, which gives the oil advantage over some antioxidant, antimicrobial, therapeutic, and preservative chemicals.  相似文献   

国际学术出版开放式访问(OA):Ⅱ.开放访问期刊"作者付费模式"的实践与争论   总被引：3，自引：2，他引：1  

李若溪  Fytton Rowland 《编辑学报》2006,18(4):315-318

综述当前国际学术出版界开放访问(OA)运动实践和理论研究的热点问题之一--OA期刊的"作者付费模式".讨论该经营模式的收费来源和方式,经营成本估算和现行的价格标准.对比了OA期刊与传统期刊的经营模式的区别和利弊,分析了OA期刊的可持续发展存在的问题.  相似文献   

Relationships Between Teaching and Research     

Stephen Rowland 《Teaching in Higher Education》2013,18(1):7-20

Abstract

This paper reports a study conducted amongst heads of department at a British university into their perspectives of teaching and research. It explores the reasons why research is given higher status, even though academics believe that, in principle, both aspects of the lecturer's role are equally valuable and mutually supportive. The links between teaching and research are investigated, and the categories of ‘teaching’ and ‘research’ are found to be somewhat inadequate concepts for distinguishing between different aspects of the academic role. The article concludes that closer relationships between the two can provide the basis for a programme to improve the quality of university teaching. Such an approach is underpinned by the view that students’ understandings should be taken seriously. They can make a significant contribution to the lecturer's research, as well as to student learning.  相似文献   

An interview with Geoff Whitty & Michael Worton     

Len Barton  Stephen Rowland 《Teaching in Higher Education》2013,18(4):563-578

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Collegiality and intellectual love   总被引：1，自引：1，他引：0  

Stephen Rowland 《British Journal of Sociology of Education》2008,29(3):353-360

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The purpose, design and use of examples in the teaching of elementary mathematics     

Tim Rowland 《Educational Studies in Mathematics》2008,69(2):149-163

This empirical paper considers the different purposes for which teachers use examples in elementary mathematics teaching, and how well the actual examples used fit these intended purposes. For this study, 24 mathematics lessons taught by prospective elementary school teachers were videotaped. In the spirit of grounded theory, the purpose of the analysis of these lessons was to discover, and to construct theories around, the ways that these novice teachers could be seen to draw upon their mathematics teaching knowledge-base in their lesson preparation and in their observed classroom instruction. A highly-pervasive dimension of the findings was these teachers’ choice and use of examples. Four categories of uses of examples are identified and exemplified: these are related to different kinds of teacher awareness.

Tim RowlandEmail:

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‘Just turn to us’: the persuasive features of contract cheating websites     

Susan Rowland  Christine Slade  Kai-Sheng Wong  Brooke Whiting 《Assessment & Evaluation in Higher Education》2018,43(4):652-665

Academic integrity is important to universities and students must abide by codes of academic conduct around assessment. Students are, however, subject to multiple pressures around assessment, some of which can push them to cheat. Modern contract cheating websites are the fronts for sophisticated, commercial operations that offer individually written assessment items for a fee; to combat their use we need a better understanding of the tools they use to persuade students to become customers. In this study we examined the persuasive features of 11 highly-visible contract cheating websites and mapped these features to a previously used persuasiveness framework. We find that contract-cheating websites use a variety of credibility, interactive and informative features designed to persuade students to use their services. In addition, the sites offer low-cost, customisable products available in very short timeframes. We suggest ways in which educators can encourage academic integrity by talking with their students about how the websites promulgate their ‘just turn to us’ message.  相似文献