面向科技工作者需求,强化科协组织人才工作 ——以安徽省科技工作者职业发展需求研究为例

围绕科技工作者需求,科协组织开展了一系列人才工作,着力增强科技工作者认同感、归属感、获得感,支持科技工作者成长成才,搭建学术交流合作平台,营造良好创新环境和助力科技工作者在经济社会发展中自我实现,为科技工作者的事业发展和价值实现提供了有力支持.面向新时代人才事业发展的新任务、新目标,本文以安徽省科技工作者为研究样本,进...     

Construction and operation of a microrobot based on magnetotactic bacteria in a microfluidic chip

Magnetotactic bacteria (MTB) are capable of swimming along magnetic field lines. This unique feature renders them suitable in the development of magnetic-guided, auto-propelled microrobots to serve in target molecule separation and detection, drug delivery, or target cell screening in a microfluidic chip. The biotechnology to couple these bacteria with functional loads to form microrobots is the critical point in its application. Although an immunoreaction approach to attach functional loads to intact MTB was suggested, details on its realization were hardly mentioned. In the current paper, MTB-microrobots were constructed by attaching 2 μm diameter microbeads to marine magnetotactic ovoid MO-1 cells through immunoreactions. These microrobots were controlled using a special control and tracking system. Experimental results prove that the attachment efficiency can be improved to ∼30% via an immunoreaction. The motility of the bacteria attached with different number of loads was also assessed. The results show that MTB can transport one load at a velocity of ∼21 μm/s and still move and survive for over 30 min. The control and tracking system is fully capable of directing and monitoring the movement of the MTB-microrobots. The rotating magnetic fields can stop the microrobots by trapping them as they swim within a circular field with a controllable size. The system has potential use in chemical analyses and medical diagnoses using biochips as well as in nano/microscale transport.     

创业网络的网络能力:概念建构与结构关系检验

基于现有研究中对于网络能力概念的设定,从创业活动的发展特征出发,开发了创业网络的四类网络能力,即内部交流、合作者知识、联系技巧和协调性。论证并用大样本的企业数据证实了内部交流对于合作者知识和联系技巧有着正向影响,合作者知识对于联系技巧和协调性具有正向影响,联系技巧对于协调性也有正向影响。     

Automatic categorization of questions for user-interactive question answering

Question categorization, which suggests one of a set of predefined categories to a user’s question according to the question’s topic or content, is a useful technique in user-interactive question answering systems. In this paper, we propose an automatic method for question categorization in a user-interactive question answering system. This method includes four steps: feature space construction, topic-wise words identification and weighting, semantic mapping, and similarity calculation. We firstly construct the feature space based on all accumulated questions and calculate the feature vector of each predefined category which contains certain accumulated questions. When a new question is posted, the semantic pattern of the question is used to identify and weigh the important words of the question. After that, the question is semantically mapped into the constructed feature space to enrich its representation. Finally, the similarity between the question and each category is calculated based on their feature vectors. The category with the highest similarity is assigned to the question. The experimental results show that our proposed method achieves good categorization precision and outperforms the traditional categorization methods on the selected test questions.     

谁在主导中日韩的国际科学合作?

[目的/意义]为了探究中日韩的国际科学合作中的主导地位及变化趋势。[方法/过程]以"中日"、"中韩"和"中日韩"国际论文合著现象为分析对象,通过科学计量的方法和手段,从重要作者、高影响力论文和资助者三个维度来分析近40年来中日韩科学合作背后的主导力量。[结果/结论]研究结果发现中日科学合作呈现出日本主导趋势由强到弱,而中国主导趋势渐强并超过日本;中韩科学合作呈现双方共同主导的特征;在三国合作中,中国主导的论文影响力较强,但随着论文影响力的增大,中国显示出的主导优势却在减弱;中国作为科研资助者极大地推动了三国的科学合作。     

基于制度分析与发展(IAD)框架的先行先试政策推广评估理论研究——以国家大数据(贵州)综合试验区为例

在充分考量当前先行先试政策研究在政策实施效果和推广评估以及普适性方法论不足等缺口的基础上,基于制度分析与发展(IAD)框架,从先行先试政策的行动舞台、外部变量、互动模式、评估准则、结果等方面提出普适性的先行先试政策推广评估理论模型;在此基础上,以国家大数据(贵州)综合试验区的先行先试政策为例开展案例研究,从大数据制度创...     

在语文教学中培养学生创新能力

朱熹曾说:“读书无疑者,须数有疑,有疑者却要无疑,到这里方是长进.”怀疑常常是创新的开始,教学中要让学生做到不“惟书”、不“惟上”,敢于怀疑已成为定论的东西,学生学习上的进步,就是从无疑到有疑,从有疑到无疑的转化中得来的.对此,教师要善于利用学生的已有知识,引导学生质疑问难,要使学生敢思、敢问、会问.质疑是创新思维的前奏,想象是创造力伟大的源泉,想象能激发学生的情感交流和求异思维的冲动,引导学生展开丰富想象,适时启发学生积极思考,营造一个良好的教学氛围,让学生在不知不觉中唤起创新的冲动,这是小学语文教师的职责所在.     

我国部分理工类高校专利信息发展现状分析及对策建议

从中国知网(CNKI)的中国专利数据库中获取我国排名前十的理工类高校从1985-2011年的专利申请及专利公开数据,从年代分布、专利类型分布、地域分布以及技术领域分布这4个方面对理工类高校进行全面的分析,得出未来发展趋势并提出专利申请所面临的问题及对策建议。     

基于CIM的相似度综合评价算法

相似度计算是自动问答领域里的重要内容。为了保证候选答案集中各答案能具备合理的排序,解决传统自动问答系统不能高效的综合评价相似度问题,提出利用综合指数法对关键词相似度、语义相似度等进行综合评价,得到综合相似度。并针对部分候选答案冗余信息过多,不利于答案提取的情况,设计了衰减相似度参数,用来解决句子冗余信息对答案提取的影响。实验结果表明,综合指数法的相似度算法能够有效的提高问答的正确率。     

网络招聘中基于本体的双向个性化推荐框架

针对现有招聘网站在面向不同用户的个性化服务方面的不足．提出了将个性化推荐系统引入网络招聘领域的解决方案。