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71.
72.
随着高校扩招,留级生所占的比例不断上升,如何有效地做好留级生的转化工作,已是摆在全体学生工作者面前的一个全新课题。作者根据自己的工作体会,用爱心、信心和耐心做好高校留级生转化工作,取得了一定的成效。 相似文献
73.
宁夏科技人才流动的原因、途径及发展趋势 总被引:4,自引:0,他引:4
根据宁夏科技人才流动情况调查的数据资料,深入分析了宁夏科技人才流动的原因、途径、发展趋势及存在的主要问题,提出了引导科技人才有序流动、合理配置科技人才资源、防止科技人才流失的对策措施. 相似文献
74.
论构建我国清洁能源技术强制许可制度 总被引:1,自引:0,他引:1
随着全球气候变化的加剧,发展中国家呼吁实施强制许可制度以实现清洁技术的有效转移和传播。从经济学、伦理学和政治学角度来分析,实施清洁能源技术强制许可制度具有合理性。目前,相关国际条约的签署和完善、强制许可制度在公共健康领域的实践、国际社会对气候治理的重视等因素为我国建立清洁能源技术强制许可制度提供了有利条件;然而,阻碍建立清洁技术强制许可制度的因素并存。在分析中国清洁能源技术强制许可制度建立的合理性、有利支撑条件和发展困境的基础上,本文重点探讨了通过明确相关法律规定、建立相关配套政策措施等途径来构建该制度,以推进我国绿色经济的发展。 相似文献
75.
Kai Hu Qing Luo Kunlun Qi Siluo Yang Jin Mao Xiaokang Fu Jie Zheng Huayi Wu Ya Guo Qibing Zhu 《Information processing & management》2019,56(4):1185-1203
Topic evolution has been described by many approaches from a macro level to a detail level, by extracting topic dynamics from text in literature and other media types. However, why the evolution happens is less studied. In this paper, we focus on whether and how the keyword semantics can invoke or affect the topic evolution. We assume that the semantic relatedness among the keywords can affect topic popularity during literature surveying and citing process, thus invoking evolution. However, the assumption is needed to be confirmed in an approach that fully considers the semantic interactions among topics. Traditional topic evolution analyses in scientometric domains cannot provide such support because of using limited semantic meanings. To address this problem, we apply the Google Word2Vec, a deep learning language model, to enhance the keywords with more complete semantic information. We further develop the semantic space as an urban geographic space. We analyze the topic evolution geographically using the measures of spatial autocorrelation, as if keywords are the changing lands in an evolving city. The keyword citations (keyword citation counts one when the paper containing this keyword obtains a citation) are used as an indicator of keyword popularity. Using the bibliographical datasets of the geographical natural hazard field, experimental results demonstrate that in some local areas, the popularity of keywords is affecting that of the surrounding keywords. However, there are no significant impacts on the evolution of all keywords. The spatial autocorrelation analysis identifies the interaction patterns (including High-High leading, High-Low suppressing) among the keywords in local areas. This approach can be regarded as an analyzing framework borrowed from geospatial modeling. Moreover, the prediction results in local areas are demonstrated to be more accurate if considering the spatial autocorrelations. 相似文献
76.
归因理论认为,人们对自己或别人行为的归因会影响期望的改变和情感反应,从而影响后继行为的动机。教师可根据归因理论的有关知识,了解学生的归因特点,并通过归因训练,引导学生做出合理归因,从而激发学生的学习动机,提高学习行为的坚持性。调查发现,高中生在思想政治课学习中具有不良归因习惯、归因方式不恰当,影响学生思想政治课学习的动机,这一现实困境呼唤教师采取相应措施积极进行干预。 相似文献
77.
危机情境中的决策信息流分析 总被引:2,自引:0,他引:2
动态变化的危机情境,使危机决策面临诸多不确定性,对决策信息流的认知与控制是有效决策的前提.本文在界定危机情境基础上,对危机决策信息流模型、特点和控制机制等问题进行了探讨. 相似文献
78.
Ying Xing Zhibin Shao Jun Ge Jiawei Luo Jinhua Wang Zengwei Zhu Jun Liu Yong Wang Zhiying Zhao Jiaqiang Yan David Mandrus Binghai Yan Xiong-Jun Liu Minghu Pan Jian Wang 《国家科学评论(英文版)》2020,7(3):579
The search for unconventional superconductivity in Weyl semimetal materials is currently an exciting pursuit, since such superconducting phases could potentially be topologically non-trivial and host exotic Majorana modes. The layered material TaIrTe4 is a newly predicted time-reversal invariant type II Weyl semimetal with the minimum number of Weyl points. Here, we report the discovery of surface superconductivity in Weyl semimetal TaIrTe4. Our scanning tunneling microscopy/spectroscopy (STM/STS) visualizes Fermi arc surface states of TaIrTe4 that are consistent with the previous angle-resolved photoemission spectroscopy results. By a systematic study based on STS at ultralow temperature, we observe uniform superconducting gaps on the sample surface. The superconductivity is further confirmed by electrical transport measurements at ultralow temperature, with an onset transition temperature (Tc) up to 1.54 K being observed. The normalized upper critical field h*(T/Tc) behavior and the stability of the superconductivity against the ferromagnet indicate that the discovered superconductivity is unconventional with the p-wave pairing. The systematic STS, and thickness- and angular-dependent transport measurements reveal that the detected superconductivity is quasi-1D and occurs in the surface states. The discovery of the surface superconductivity in TaIrTe4 provides a new novel platform to explore topological superconductivity and Majorana modes. 相似文献
79.
Xier Luo Yu Zhou Bing Zhang Yi Zhang Xiaobo Wang Tong Feng Zhipeng Li Kuiqing Cui Zhiqiang Wang Chan Luo Hui Li Yanfei Deng Fenghua Lu Jianlin Han Yongwang Miao Huaming Mao Xiaoyan Yi Cheng Ai Shigang Wu Alun Li Zhichao Wu Zijun Zhuo Do Da Giang Bikash Mitra Mohammad Farhad Vahidi Shahid Mansoor Sahar Ahmed Al-Bayatti Eka Meutia Sari Neena Amatya Gorkhali Sigit Prastowo Laiba Shafique Guoyou Ye Qian Qian Baoshan Chen Deshun Shi Jue Ruan Qingyou Liu 《国家科学评论(英文版)》2020,7(3):686
Domesticated buffaloes have been integral to rice-paddy agro-ecosystems for millennia, yet relatively little is known about the buffalo genomics. Here, we sequenced and assembled reference genomes for both swamp and river buffaloes and we re-sequenced 230 individuals (132 swamp buffaloes and 98 river buffaloes) sampled from across Asia and Europe. Beyond the many actionable insights that our study revealed about the domestication, basic physiology and breeding of buffalo, we made the striking discovery that the divergent domestication traits between swamp and river buffaloes can be explained with recent selections of genes on social behavior, digestion metabolism, strengths and milk production. 相似文献
80.