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41.
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The water-repellent surface of lotus (Nelumbo nucifera) leaf and flower is due to nanosized wax papillae on the upper side of each epidermal cell. As a result, raindrops make a
high contact angle with the papillae and roll off carrying dust and dirt particles, leaving the surface clean. This self-cleaning
property of highly hydrophobic surfaces, termed as the lotus effect, has opened the possibilities of fabricating superhydrophobic
surfaces for a variety of products. 相似文献
43.
Statistical reform in school psychology research is discussed in terms of research designs, measurement issues, statistical modeling and analysis procedures, interpretation and reporting of statistical results, and finally statistics education. © 2007 Wiley Periodicals, Inc. Psychol Schs 44: 543–549, 2007. 相似文献
44.
Adults use both first-order, or categorical, relations among features (e.g., the nose is above the mouth), and second-order, or fine spatial relations (e.g., the space between eyes), to process faces. Adults' expertise in face processing is thought to be based on the use of second-order relations. In the current study, 5-month-olds detected second-order changes, but 3-month-olds failed to detect second-order changes induced by 2 different manipulations. Three-month-olds did detect first-order changes, however. Also, inversion affected 5-month-olds' processing of second-order but not first-order information. These results suggest that, although sensitivity to first-order relations is available by 3 months or earlier, sensitivity to second-order information may not develop until sometime between 3 and 5 months of age. 相似文献
45.
AbstractResearch has shown the value of reading for school children. In South Africa most pupils study through the medium of a second language and their language competence would benefit from wide reading. Teachers should serve as role models to encourage pupils to read, but many are unqualified or underqualified and lack a knowledge of children's books. Often their initial teacher education does not provide them with the necessary knowledge or media to make their classroom presentations more stimulating. Shell Education Service developed the Holdall Lectern and Prompt Posters which provide teachers with compact, flexible media which they can adapt to suit their own needs. The media can be used immediately and teachers' confidence is increased. Pupils learn better and are introduced to a wider variety of popular books. The Holdall Lectern and Prompt Posters have been used successfully for both formal and non-formal education. 相似文献
46.
Ramesh C Gaur 《International Information and Library Review》2013,45(2-4):189-203
In this paper efforts have been made to analyze the present status of digitization of Indian Management Libraries through a survey carried out in 500 management libraries in India. The issues such as library automation, development of digital libraries, and use of bar code and smart card technology have been discussed. Issues responsible for the widening of the digital divide have been identified. 相似文献
47.
Ramesh Srinivasan 《The Information Society》2013,29(1):24-36
Research exploring the means by which new media technologies can shape development within marginalized communities worldwide has began to move away from discussion limited to technical and infrastructural, to consider the interactions, beliefs, and values of local communities. Yet most projects continue to focus on enabling communities to access external information, rather than on the possibility of using media to catalyze community reflection and thereby developmental activity from within. This article shows how this promise can be actualized by providing an overview of an experimental project that made available a set of video cameras to a carefully selected group of community members in a ritualized, largely nonliterate village in Andhra Pradesh, India. It concludes that policymakers, researchers, and practitioners would benefit from considering the possibilities that reflective media hold to generate collective action and consensus building, and that these possibilities can synergize with the need to develop scalable projects. 相似文献
48.
Raji Swaminathan Thalia M. Mulvihill 《International journal of qualitative studies in education》2013,26(8):982-997
AbstractThe purpose of this paper is to further examine ‘place-reflexivity’ as a methodological tool for engaging in site-seeing in qualitative research. Qualitative research often involves a site or field. Yet, the ‘where’ of qualitative research has often been overlooked in methodological discussions. This approach is akin to sightseeing where sites are a backdrop rather than foregrounded. We draw on scholarship that conceptualizes site, place, field, and context from sociological, geographical and anthropological disciplines, as well as on concepts of third space as they apply to qualitative inquiry. We offer an argument for the fuller inclusion, and expanded treatment of sites including tools to assist qualitative researchers with this type of thinking. 相似文献
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