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1.
以"十三五"国家重点研发计划战略性先进电子材料重点专项实施方案与绩效评价为基础,根据"卡脖子"技术的基本属性,总结分析"卡脖子"技术的研判方法,梳理和分析第三代半导体材料、新型显示、大功率激光材料与器件、高端光电子与微电子材料等四个方向存在的"卡脖子"技术典型案例,并初步探讨"十四五"期间破解先进电子材料领域"卡脖子"技术的对策. 相似文献
2.
Keiko Kurata Mamiko Matsubayashi Shinji Mine Tomohide Muranushi Shuichi Ueda 《Information processing & management》2007
In recent years, electronic journals are in common use in scholarly communication and we can interpret this situation in various ways. On the one hand, we can say that scholarly communication is now much dependent on electronic resources. On the other hand, it would be too simplistic to say that scholarly communication is now greatly dependent on electronic resources because researchers seldom use other electronic resources. The purpose of this article is to show the position of electronic journals in scholarly communication based on Japanese researchers’ information behavior and estimation. The main focus is on distinguishing the function of scholarly journal and the electronic form. A questionnaire was sent to 1427 physicists, 1026 chemists and 1276 pathologists in universities and other research institutes all over Japan, of whom 775 (54.3%), 494 (48.1%) and 541 (42.4%), respectively, supplied answers. The main results are as follows. Japanese researchers in STM fields use electronic journals as a matter of course, and other electronic resources to some extent, for accessing information; but this shift to electronic resources seemed to be not a transformation but a modification of traditional patterns of use. Researchers still rely on traditional scholarly journals for accessing information and publication, although their recognition has begun to change. 相似文献
3.
The six-membered ring (SMR) is a common structure unit for numerous material systems. These materials include, but are not limited to, the typical two-dimensional materials such as graphene, h-BN, and transition metal dichalcogenides, as well as three-dimensional materials such as beryllium, magnesium, MgB2 and Bi2Se3. Although many of these materials have already become ‘stars’ in materials science and condensed-matter physics, little attention has been paid to the roles of the SMR unit across a wide range of compositions and structures. In this article, we systematically analyze these materials with respect to their very basic SMR structural unit, which has been found to play a deterministic role in the occurrence of many intriguing properties and phenomena, such as Dirac electronic and phononic spectra, superconductivity and topology. As a result, we have defined this group of materials as SMR inorganic materials, opening up a new perspective on materials research and development. With their unique properties, SMR materials deserve wide attention and in-depth investigation from materials design, new physical discoveries to target-wizard applications. It is expected that SMR materials will find niche applications in next-generation information technology, renewable energy, space, etc. 相似文献
4.
翟琪 《科技成果管理与研究》2009,(4):17-18,21
本文结合自己的科研档案管理的工作实践,提出了在科研课题档案管理过程中存在的规章制度执行力度不够大、归档材料、档案利用率及档案管理电子化水平不够高等问题,并针对这些问题进行初步分析和探讨．试图解决这些问题．从而提高科研档案管理水平。 相似文献
5.
一维纳米材料（碳纳米管、纳米线、氧化物纳米带）作为研制纳电子器件理想的材料具有重要的科学意义和应用前景。本工作主要集中在氧化物纳米带、碳纳米管的功能化及其和纳米器件性质研究。 相似文献
6.
电子政府与公共服务的改善 总被引：8，自引：0，他引：8
信息技术正以其广泛的适应性和强大的渗透性为公共服务提供强有力的技术支持,电子政府推动着公共服务的改善。本文在综述国内外电子政府理论研究的基础上,从三个方面分析了电子政府与公共服务改善的相关性:(1)电子政府与政府职能转变;(2)电子政府与公共服务程序改革;(3)电子政府与社区公众服务系统建立。 相似文献
7.
机器可读电子词典是一切自然语言处理系统特别是机器翻译系统的基础。机器翻译的研究实践表明,没有高质量的词典,也就没有高质量的译文。每个机译系统都要在机译词典上花费大量的人力和投资,因此本文就建立这样一套通用的支持机器翻译的电子词典,提出若干设想加以讨论。 相似文献
8.
为了协助广西壮族自治区科技厅、自治区实验动物管理委员会对全区实验动物的生产、使用、科研及教育培训提供管理支持,提高全区实验动物资源的利用效率,完成了对广西实验动物信息平台电子物理网络支撑环境的建设。文章主要从广西实验动物信息平台电子物理网络支撑体系建设的目的和意义,以及拟解决的关键问题入手,详细介绍了广西实验动物信息平台电子物理网络支撑体系建设内容和技术构建方案。 相似文献
9.
全面展示个性化健康管理领域在全球范围内的研究现状、重点国家（地区）,挖掘个性化健康管理领域研究热点与未来发展趋势,对于信息管理、电子健康、智慧医疗等领域的研究者全面掌握该领域研究状况和进一步开展相关领域研究具有参考意义。以2003-2017为时间跨度,利用检索式,得到刊载在1 656个期刊上的文献数据4 803条。基于信息计量分析软件获得分析结果：①个性化健康管理的年度发文数量呈稳步增长趋势;②88个国家或地区参与此领域的研究,相关科研机构主要分布在美国;③主要研究学科为医学、计算机科学、社会学;④研究热点主要集中在互联网应用、个性化医疗等方面;⑤未来研究趋势偏向于个性化健康的实现和电子健康记录等。 相似文献
10.
该研究主要基于自主语言学习(SALL)理论体系关于材料来源、选材、自主学习者活动的组织和教师的作用,对在线商务英语自主学习的课堂教学实践进行总结和分析,描述了教学设计的理念是以“产出导向法”(POA)为依据,提出在线教学中自主语言学习能力提升的三个方面,即小组协作、语言基础、综合技能(包括写作和演讲),强调在在线自主外语学习中,教师可以利用丰富的在线资源,把个体反思与集体反思结合起来,把传统的知识传授变为知识升级。 相似文献
11.
Shunning Li Zhefeng Chen Zhi Wang Mouyi Weng Jianyuan Li Mingzheng Zhang Jing Lu Kang Xu Feng Pan 《国家科学评论(英文版)》2022,9(6)
Recent decades have witnessed an exponential growth in the discovery of low-dimensional materials (LDMs), benefiting from our unprecedented capabilities in characterizing their structure and chemistry with the aid of advanced computational techniques. Recently, the success of two-dimensional compounds has encouraged extensive research into one-dimensional (1D) atomic chains. Here, we present a methodology for topological classification of structural blocks in bulk crystals based on graph theory, leading to the identification of exfoliable 1D atomic chains and their categorization into a variety of chemical families. A subtle interplay is revealed between the prototypical 1D structural motifs and their chemical space. Leveraging the structure graphs, we elucidate the self-passivation mechanism of 1D compounds imparted by lone electron pairs, and reveal the dependence of the electronic band gap on the cationic percolation network formed by connections between structure units. This graph-theory-based formalism could serve as a source of stimuli for the future design of LDMs. 相似文献
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13.
结合2010年间院校图书馆电子期刊研究状况,就促进深入相关工作研究陈述几点看法。认为应该有针对性地引导对具体工作问题的研究;倡导中小型图书馆人员参与研究;并关注电子期刊与纸质期刊的协调。 相似文献
14.
为帮助新晋企业和设计者研发电子体温计产品和申请相关专利,从统计指标和技术发展角度分析截至2020年6月全球电子体温计专利情况;并界定电子体温计高价值专利标准,通过专利地图和技术功效矩阵对相关专利进行可视化分析。研究结果表明：（1）电子体温计专利申请以发明专利为主要类型,专利申请数量处于快速增长阶段,但专利失效问题严重。（2）中国和日本同为电子体温计专利申请大国,但日本企业占据行业主导地位;此外,区域经济发展与其电子体温计专利申请相互促进。（3）电子体温计的两个主要发展方向是内部元件提高测温精度且缩短测量时间、外观造型吸引用户购买且方便使用。最后,提出电子体温计未来应当向智能化方向发展,成为大健康产业链的一环,并分别从企业和政府角度提出人才、技术和知识产权保护,以及标准和评价体系等方面的相关对策建议。 相似文献
15.
In order to acquire the numerous advantages of electronic commerce, issue of evaluating electronic commerce adoption has its own importance. For this purpose, based on the scientific research and literature reviews, technical, organizational and inter-organizational are identified as the three dimensions for evaluating electronic commerce adoption of the companies. Thereafter, expert viewpoints were put forward about criteria and indicators in each of the above-mentioned dimensions. On the basis of identified indicators and criteria, a framework was developed for evaluating the electronic commerce adoption in Iranian companies. Furthermore in this research, the framework is tested in 27 Iranian companies. The result indicates that there is a significant positive relationship between degree of electronic commerce adoption and stages of electronic commerce development in the companies. Based on the findings and test of the framework, it will present necessary guidelines for evaluating electronic commerce adoption. 相似文献
16.
基于ESI的“金砖四国”基础研究产出规模和影响力研究 总被引：2，自引：0，他引：2
本文探析了"金砖四国"(巴西、俄罗斯、印度和中国)基础研究产出的规模和影响力.对ESI数据库1999--2009年数据的分析表明:尽管"金砖四国"与G7国家相比,基础研究产出规模和影响力仍有较大差距,但巴西、印度和中国增长迅速,只有俄罗斯发展缓慢.四国的数理化、材料科学、工学和农业等领域相对较强,但医学、生物和社会科学等领域相对落后.中国的基础研究并非仅是论文数量的扩张,其论文总体影响力的增速远大于论文数量的增速.平均影响力增速也已超越"金砖四国"其余三国及所有G7国家. 相似文献
17.
《国家科学评论(英文版)》2014,(2)
The current development trend towards miniaturized portable electronic devices has signiicantly increased the demand for ultrathin, lexible and sustainable on-chip micro-supercapacitors that have enormous potential to complement, or even to replace, micro-bateries and electrolytic capacitors. In this regard,graphene-based micro-supercapacitors with a planar geometry are promising micro-electrochemical energy-storage devices that can take full advantage of planar coniguration and unique features of graphene.his review summarizes the latest advances in on-chip graphene-based planar interdigital micro-supercapacitors, from the history of their development, representative graphene-based materials(graphene sheets, graphene quantum dots and graphene hybrids) for their manufacture, typical microfabrication strategies(photolithography techniques, electrochemical methods, laser writing, etc.),electrolyte(aqueous, organic, ionic and gel), to device coniguration(symmetric and asymmetric). Finally,the perspectives and possible development directions of future graphene-based micro-supercapacitors are briely discussed. 相似文献
18.
摘要：游戏衍生品发展异常缓慢是业界非常困惑的问题,理论研究滞后是一个重要原因。首先,在文献研究、大规模开放式访谈的基础上,通过对消费者使用游戏衍生品的内在机理进行深入分析,提出了影响消费者游戏衍生品使用意愿的多因素创新性概念模型,并采用自编问卷予以了验证。然后,根据影响因素之间的关系以及影响强度,根据各个指标变量对相应因素的影响强度,提出了若干企业开发与经营游戏衍生品的指导性建议。 相似文献
19.
《Information processing & management》2022,59(2):102821
People often search for information in order to learn something new. In recent years, the “search-as-learning” movement has argued that search systems should be better designed to support learning. Current search systems (especially Web search engines) are largely designed and optimized to fulfill simple look-up tasks (e.g., navigational or fact-finding search tasks). However, they provide less support for searchers working on complex tasks that involve learning. Search-as-learning studies have investigated a wide range of research questions. For example, studies have aimed to better understand how characteristics of the individual searcher, the type of search task, and interactive features provided by the system can influence learning outcomes. Learning assessment is a key component in search-as-learning studies. Assessment materials are used to both gauge prior knowledge and measure learning during or after one or more search sessions. In this paper, we provide a systematic review of different types of assessments used in search-as-learning studies to date. The paper makes the following three contributions. First, we review different types of assessments used and discuss their potential benefits and drawbacks. Second, we review assessments used outside of search-as-learning, which may provide insights and opportunities for future research. Third, we provide recommendations for future research. Importantly, we argue that future studies should clearly define learning objectives and develop assessment materials that reliably capture the intended type of learning. For example, assessment materials should test a participant’s ability to engage with specific cognitive processes, which may range from simple (e.g., memorization) to more complex (e.g., critical and creative thinking). Additionally, we argue that future studies should consider two dimensions that are understudied in search-as-learning: long-term retention (i.e., being able to use what was learned in the long term) and transfer of learning (i.e., being able to use what was learned in a novel context). 相似文献
20.
【目的/意义】将关联数据对于多源异构数据组织的优势应用在电子病历资源共享中,实现电子病历资源的共享。【方法/过程】在分析了电子病历资源共享难题以及关联数据的技术特点基础上,提出基于关联数据的电子病历资源的处理流程,进而构建基于关联数据的电子病历资源共享模型,并选取某医院部分电子病历资源数据进行实证研究。【结果/结论】实证研究结果表明,关联数据能够实现电子病历资源的共享。基于关联数据的电子病历资源共享模型能够较好的实现电子病历资源的共享及信息扩展,改善资源之间无法互联互通问题,提升诊疗、检索效率。【创新/局限】本文为国内复杂汉语环境下电子病历资源共享提供可行方案,未来还应进行更大覆盖范围、更多数据量的实证,并从标准化、隐私保护方面进行扩展研究。 相似文献