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61.
Our objectives for this article are twofold: first, to examine the convergence of nations with regard to ICT access; and second, to see whether countries in the same continental region (South and East Asia, West and Middle East Asia, Africa, Eastern Europe, Western Europe, North America, South America, and Oceania) or having same initial ICT access have coalesced into groups. We constructed an ICT access index using three indicators (mobile phone, Internet, and broadband use per 100 population) for a sample of 198 nations for the 16-year period from 2000 to 2015. Results show that digital divide has declined in relative terms, but not in absolute terms. The countries, starting at lower ICT levels, are not adopting ICT faster than the leaders. Continental region-wise analysis also shows that the catch-up is maximum for already developed countries, and minimum for countries in African and Oceania continental regions. 相似文献
62.
This paper presents a droplet-based microfluidic device for concurrent droplet charging and sorting by electrostatic actuation. Water-in-oil droplets can be charged on generation by synchronized electrostatic actuation. Then, simultaneously, the precharged droplets can be electrostatically steered into any designated laminar streamline, thus they can be sorted into one of multiple sorting channels one by one in a controlled fashion. In this paper, we studied the size dependence of the water droplets under various relative flow rates of water and oil. We demonstrated the concurrent charging and sorting of up to 600 droplets∕s by synchronized electrostatic actuation. Finally, we investigated optimized voltages for stable droplet charging and sorting. This is an essential enabling technology for fast, robust, and multiplexed sorting of microdroplets, and for the droplet-based microfluidic systems. 相似文献
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64.
Morgan Chitiyo Plaxedes Makweche‐Chitiyo Meungguk Park Lawrence K Ametepee Jonathan Chitiyo 《Journal of Research in Special Educational Needs》2011,11(3):171-177
Students who engage in challenging behaviour compromise the fundamental ability of schools to educate children. Consequently, teachers face the daunting task of designing effective strategies to promote positive educational outcomes for their students. Since the 1997 Individuals with Disabilities Education Act amendments, the use of positive behaviour supports (PBS) to address the behavioural needs of children challenged by disabilities has expanded. There is evidence to support the utility of PBS in reducing challenging behaviour among students. However, successful schools are also gauged by the academic achievement of their students. Hence, it is important to examine the extent to which behavioural outcomes are related to academic outcomes. The purpose of this paper is to examine the extent to which PBS interventions aimed at reducing challenging behaviour result in corresponding improvement in academic achievement. A meta‐analysis of extant research indicated a positive correlation of 0.40 between improvement in problem behaviour and academic achievement. A video abstract of this article can be viewed at: http://youtu.be/c9OUU0GkGrw . 相似文献
65.
66.
Jun-Young Oh 《International Journal of Science and Mathematics Education》2011,9(5):1135-1166
Researchers have shown that most students resist changes to their core beliefs by offering auxiliary hypotheses at the first
sign of the development of conceptual change. Studies have viewed student reaction to discrepant events as an important clue
in helping researchers understand not only the structure of alternative concepts (Niaz, Science & Education, 7(2):107 – 127, 1998) but also the nature of scientific concepts. The main objectives of this research were the following: (a) to consider prudently
the conflict map of Tsai (International Journal of Science Education, 22(3):285 – 302, 2000); (b) to initiate and develop an enhanced conflict map based on Lakatosian ethodology, which could help science teachers
and students resolve conflicts that occur in the explanation of natural phenomena; (c) to examine the effectiveness of the
enhanced conflict map; and (d) to discuss these implications in science education. Specifically, this study used two freshman
classes from the Department of Electronics and one class of Astronomy majors from C. National University, South Korea, to
investigate how scientific concepts change after selecting the modern physics field (Photoelectric effect), which is included
in the Physics and Astronomy courses. Modern physics has led to the so-called Lakatosian heuristic principle or methodology,
a useful framework that includes scientific philosophy and science history as study strategies. “Enhanced conflict maps” are
suggested for use to consistently show all the study processes. 相似文献
67.
68.
This paper examines music education’s legitimation of values as a means of preparing students for entry into the new ‘knowledge society’ of the People’s Republic of China in a global age. It explores the ways in which values education relates to the teaching of both musical and non‐musical meanings in the dual context of nationalism and globalization, and discusses some problems that values education faces in school music classrooms. It examines the ways in which globalization has pressured values education into resolving the apparent contradiction between national identity and national unity in the ever‐changing play of Chinese history and politics. It concludes with a discussion of how music education might juggle three pairs of apparently contradictory relationships in the curriculum: between contemporary cultural and social values on the one hand, and traditional Chinese and Communist ideologies on the other; between collectivism and individualism; and between national and global cultures. 相似文献
69.
Ingjerd Høien‐Tengesdal 《Scandinavian Journal of Educational Research》2013,57(5):451-469
According to the Simple View of Reading (SVR), reading comprehension is the product of word decoding ability and linguistic comprehension (R = D × C). However, there is also evidence showing that an additive model (R = D + C) explains just as much or even more of the variance in reading comprehension than the product model. To further evaluate these models, 467 Norwegian students in grade 6 were administered measures of reading comprehension, decoding ability, listening comprehension, phonemic awareness, and rapid digit naming. Hierarchical regression analyses were conducted to evaluate the explanatory power of each model, in addition to the influence of phonemic awareness and rapid naming. The preliminary hierarchical regression analyses were replicated among Swedish students. According to the present study, the additive model explained more of the variance in reading comprehension than the product model, and only rapid naming contributed significantly to explain variance in reading comprehension, above and beyond that explained by the SVR. 相似文献
70.
Kajsa Yang Hansen Monica Rosén Jan‐Eric Gustafsson 《Scandinavian Journal of Educational Research》2013,57(2):197-211
This study examines the changes in educational inequality at the school‐ and individual‐levels in 1991 and 2001. Comparisons are made between the IEA Reading Literacy Study 1991 and the so called 10‐Year Trend Study in PIRLS 2001. The between‐school differences in reading achievement variance and the size of the relationship between SES and reading achievement at school‐level are the two main focuses. Applying a two‐level structural equation modeling technique, it was found that the between‐school differences in reading achievement were greater in RLS 2001 than in RLS 1991, and the school SES effect has been strengthened over time. These changes indicate that educational inequality in Sweden has increased over time. Some possible explanations to these changes are discussed with reference to school reforms and demographic changes. 相似文献