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素质教育应注意的问题 总被引：1，自引：0，他引：1
赵海禄 《雁北师范学院学报》2001,17(1):35-35,37
素质教育要注重培养学生的能力，但这并不排斥传授知识与思想品德教育，这三者的有机结合，才是现代素质教育所追求的最终目的。素质增长率强调学生的主体地位，但并不否认教师的主导作用，相反，却对教师提出更高的要求，素质教育提倡启发式教学，量并非几个简单的课堂提问就是启发式教学，启发式不仅仅是一种具体的教学方法，而是一种教学思想。 相似文献
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文章从"谷歌版权事件"引出机构知识库的版权问题,分析了机构知识库所收资源的版权状态,指出了机构知识库在获取、存取和运行过程中可能存在的版权风险,介绍了国内外知名机构知识库对版权问题的解决办法,最后对机构知识库版权建设提出了建议. 相似文献
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Hailu Nigus Weldeana Solomon Tewolde Abraham 《Journal of Mathematics Teacher Education》2014,17(4):303-330
Many learners hold traditional beliefs about mathematics that can hamper their learning in the discipline. To address this issue, a “history-based” intervention program entailing problem-solving and writing activities that instigate cognitive conflict was implemented. Data sources were pretest and posttest scores of a 12-theme questionnaire designed for this study called “Prospective teachers’ beliefs questionnaire about mathematics learning” and written reflections of prospective teachers. The survey of the prospective teachers beliefs related to the nature of mathematics and the way it is learned, taught, and practiced showed a great majority of them failed to hold progressive beliefs. Fortunately, the intervention program has helped the prospective teachers revise and correct their beliefs, thoughts, and understandings. Study of the prospective teachers’ written reflections and observations of their oral presentations during whole-class discussions strengthen the results of the quantitative study. 相似文献
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Hailu Wang Fang Wang Hui Xia Peng Wang Tianxin Li Juzhu Li Zhen Wang Jiamin Sun Peisong Wu Jiafu Ye Qiandong Zhuang Zaixing Yang Lan Fu Weida Hu Xiaoshuang Chen Wei Lu 《国家科学评论(英文版)》2021,8(9)
In modern electronics and optoelectronics, hot electron behaviors are highly concerned, as they determine the performance limit of a device or system, like the associated thermal or power constraint of chips and the Shockley-Queisser limit for solar cell efficiency. To date, however, the manipulation of hot electrons has been mostly based on conceptual interpretations rather than a direct observation. The problem arises from a fundamental fact that energy-differential electrons are mixed up in real-space, making it hard to distinguish them from each other by standard measurements. Here we demonstrate a distinct approach to artificially (spatially) separate hot electrons from cold ones in semiconductor nanowire transistors, which thus offers a unique opportunity to observe and modulate electron occupied state, energy, mobility and even path. Such a process is accomplished through the scanning-photocurrent-microscopy measurements by activating the intervalley-scattering events and 1D charge-neutrality rule. Findings here may provide a new degree of freedom in manipulating non-equilibrium electrons for both electronic and optoelectronic applications. 相似文献
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发展终身学习需要探讨的问题 总被引：5，自引：0，他引：5
随着终身学习在我国的兴起 ,国民对终身学习重要性的认识也在不断地深化 ,但是 ,仍有不少可能影响终身学习普及、推广和深化的理论与实践问题亟待解决。本文拟探讨一些发展终身学习的观念问题 ,以及属于终身学习范畴的成人远程学习的实践问题。一、发展终身学习的必要 终身学习问题的日益突出 ,与我国社会改革开放的深入和科学技术水平的提高密切相关 ,因为它不仅是这二者发展的必然结果 ,而且还是推动二者进一步深入发展的必要条件 ,所以对终身学习的重要性怎样强调也不会过份。一般来说 ,在科学技术发展缓慢的条件下 ,传统的“一次学习… 相似文献
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Meseret F. Hailu Molly Sarubbi 《International journal of qualitative studies in education》2019,32(9):1108-1124
AbstractPopular media shapes societal perceptions and discourse. The growing use of news media in higher education practices (outreach, admissions, and campus communication) have heightened the need for institutional leadership to not only understand the general impact of popular media but also to comprehend students’ representation, as well as the acquisition and dissemination of media content. In this study, authors present a media content analysis of newspaper coverage of the Black Lives Matter (BLM) movement in the well-known periodical, the Chronicle of Higher Education. Ultimately, this study demonstrates (1) organizational leadership can be influenced and disrupted to promote racial justice and (2) the discursive treatment of the BLM in popular media and, and by extension, in the United States’ public imagination. Overall, this study suggests that in situations where institutional policies perpetuate racial inequity, BLM student movements have the capacity to complicate existing discourse about Blackness in higher education and catalyze substantial social change. 相似文献
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Hsun-Yu Chan Hyejin Choi Meseret F. Hailu Melinda Whitford Sheila Duplechain DeRouen 《科学教学研究杂志》2020,57(8):1250-1280
In this paper, we explore how secondary school students' participation in structured, math- and science-focused programs outside of school is associated with the aspiration to, and actual enrollment in, a STEM major in college. Moreover, we examine how varying sociodemographic backgrounds are related to their participation in these programs. Using expectancy-value theory and social cognitive career theory as our conceptual frameworks, we conduct a path analysis based on a nationally representative panel dataset. Results indicate that students who participate in structured science-focused out-of-school programs in eighth grade are more likely to express an aspiration to and choosing a STEM major in college. The intersection of sociodemographic backgrounds further highlights the intricate differences in math-focused programs participation outside of school between Latinx and White adolescents of varying socioeconomic status. 相似文献
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Junxiao Zhou Haoliang Qian Junxiang Zhao Min Tang Qianyi Wu Ming Lei Hailu Luo Shuangchun Wen Shaochen Chen Zhaowei Liu 《国家科学评论(英文版)》2021,8(6)
Optical analog signal processing technology has been widely studied and applied in a variety of science and engineering fields, with the advantages of overcoming the low-speed and high-power consumption associated with its digital counterparts. Much attention has been given to emerging metasurface technology in the field of optical imaging and processing systems. Here, we demonstrate, for the first time, broadband two-dimensional spatial differentiation and high-contrast edge imaging based on a dielectric metasurface across the whole visible spectrum. This edge detection method works for both intensity and phase objects simply by inserting the metasurface into a commercial optical microscope. This highly efficient metasurface performing a basic optical differentiation operation opens up new opportunities in applications of fast, compactible and power-efficient ultrathin devices for data processing and biological imaging. 相似文献