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伴随云计算、千万亿次存储等信息技术的飞速发展,大数据正以前所未有的方式冲击着社会的发展与人们的日常生活.作为朝阳学科的环境科学与工程如何应对大数据时代催生的机遇与挑战,是一线高校教师面临的重要课题.文章介绍大数据的概念和基本特征,探讨大数据在环境科学与工程教学中的渗透作用:提升教学内容的前瞻性,促进教学方式的改变,发展精、准的个性化教学体系. 相似文献
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Perceived benefits and barriers to the use of high-speed broadband in Ireland's second-level schools
As part of Ireland's National Digital Strategy, high-speed broadband is being rolled out to all second-level schools to support greater use of information and communication technology (ICT) in education. This programme signals a move from slow and unreliable broadband connections for many schools to a guaranteed high-speed connection with technical support. Theoretically, this should allow for behaviours and pedagogies to adapt, incorporating ICT into education. Research shows that integrating ICT into teaching and learning is a gradual process for most teachers and is influenced by a complex mix of socio-technical factors. Our data set consists of survey data from teachers and principals from a sample of second-level schools. The survey collected factual and attitudinal variables including attitudes towards ICT integration, current availability of infrastructure and barriers to ICT use, before schools received high-speed broadband connectivity. We examine the factors influencing teachers’ attitudes to ICT and their perceived barriers in adopting new technologies in their day-to-day teaching. Analysis of this baseline period is essential in an iterative digital strategy, informing future strategies, targeting policy most effectively and achieving policy objectives. While attitudes towards the potential of high-speed broadband and use of ICT are consistently positive across sub groups of schools and teachers, perceived barriers to ICT usage differ. 相似文献
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大学英语四、六级考试是教育部为提高高等教育英语教学而采取的一项措施,本文就如何做好大学英语四、六级考试考务管理工作提出一些建议,以促进CET考试考务管理工作制度化、规范化、科学化。 相似文献
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Dong-Joong Kim Woong Lim 《International Journal of Science and Mathematics Education》2018,16(8):1561-1579
This study compares English- and Korean-speaking university students’ colloquial and mathematical discourses on the notion and practice of limit. There exists a lexical discontinuity in Korean with the word limit, since the mathematical word for limit is not commonly used as a colloquial word in Korean, unlike its use in English. This study discusses similarities and differences with regard to ways students in each country use the word limit in colloquial contexts and in mathematical tasks. Data include surveys and interviews, and participants’ discourses, which were analyzed using Sfard’s (2008) discursive framework. Findings indicate that the mathematical discourse of the Korean speakers was structural (i.e. formal or mathematical) and the one for the English speakers was processual. Further, the differences between the US and Korean participants’ use of limit in everyday and mathematical discourses informed the language-dependent properties of school mathematics discourses in terms of word use, routines, endorsed narratives, and visual mediators. This study discusses different discursive needs—linguistically and culturally—to support meaningful mathematical discourses. 相似文献
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In this study, we simulated deformation and surfactant distribution on the interface of a surfactant-covered droplet using optical tweezers as an external source. Two optical forces attracted a single droplet from the center to both sides. This resulted in an elliptical shape deformation. The droplet deformation was characterized as the change of the magnitudes of surface tension and optical force. In this process, a non-linear relationship among deformation, surface tension, and optical forces was observed. The change in the local surfactant concentration resulting from the application of optical forces was also analyzed and compared with the concentration of surfactants subjected to an extensional flow. Under the optical force influence, the surfactant molecules were concentrated at the droplet equator, which is totally opposite to the surfactants behavior under extensional flow, where the molecules were concentrated at the poles. Lastly, the quasi-equilibrium surfactant distribution was obtained by combining the effects of the optical forces with the extensional flow. All simulations were executed by the lattice Boltzmann method which is a powerful tool for solving micro-scale problems. 相似文献
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结合河池学院大学英语听力教学的现状,阐述大学英语听力教学中存在的一些问题,同时有针对性地提出改进大学英语听力教学的建议,以期提高大学英语听力教学质量. 相似文献
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