公共图书馆服务供给政社合作关系研究     

李杨 《图书情报工作》2019,63(7):30-37

[目的/意义]在当前政府职能转变的背景下，政府与社会组织合作提供公共图书馆服务是公共图书馆管理体制改革的有效措施，也是公共图书馆事业发展的重要趋势。研究政府与社会组织的合作关系，不仅能够丰富相关理论成果，而且能为公共图书馆服务供给政社合作的发展提供参考。[目的/意义]通过文献调研、网络调研与实地调研相结合，论述公共图书馆服务供给政社合作关系的概念及特征，对公共图书馆服务供给政社合作关系中各主体的角色、政社合作关系的成因、政社合作关系的类型及形成过程进行深入分析。在此基础之上，提出公共图书馆服务供给政社合作关系可持续发展的对策。[结果/结论]良好合作关系的建立需要端正合作动机，完善合作制度，规范合作行为。  相似文献   

自然语言转换为受控语言的语义工具——入口词表模块     

刘华梅  侯汉清 《情报科学》2007,25(1):93-96,112

美国伯克莱大学近年来开发设计的语义工具———入口词表模块(EVM),目标是实现自然语言到受控语言的转换。本文详细介绍了EVM的创建过程和实现机制,首先利用数据检索代理和清洗代理从远程数据库中下载记录;然后抽取代理和构建代理利用下载的数据,采用统计学的方法计算自然语言词汇和受控语言词汇之间的关系,构建关联词典;最后由桌面代理和领域代理提供给用户感兴趣的领域,帮助用户进行检索。另外还列举了目前已经建立的几种模块,如INSPEC、MEDLINE、PATENTS等。最后还提出了这一项目未来需要改进的工作。  相似文献   

基于基尼系数的耕地质量差异程度分析——以广东省南方稻田耕地地力结果为例   总被引：2，自引：1，他引：2  

吴克宁  曹志宏  梁流涛  赵珂  韩春建 《资源科学》2007,29(3):165-169

本文提出了利用耕地基尼系数定量评价区域耕地质量差异的方法和其理论依据。以广东省南方稻田耕地地力评价结果为例，结合其他指标对研究区域的耕地质量空间差异进行了实证分析，并根据耕地基尼系数值利用SPSS软件聚类分析模块将研究区域的稻田耕地质量分为4级以显示各市水稻田质量差异程度，然后文章提出耕地洛伦茨曲线的优化，最后文章对广东省南方稻田耕地质量差异实证分析进行总结，并对耕地基尼系数的相对性和变化幅度的微小性进行了讨论。研究结果表明运用耕地基尼系数对区域耕地质量差异进行定量评价的方法简单快捷，为区域耕地质量差异程度的研究提供了一种新思路，对全面区域耕地质量状况和消除耕地质量差异程度宏观政策全面提高耕地质量具有一定的研究意义。  相似文献   

新农村建设视野下两委矛盾及成因   总被引：1，自引：0，他引：1  

杨建国  李娟 《金陵科技学院学报(社会科学版)》2007,21(2):20-23

新农村建设是社会主义建设的题中应有之义,新农村建设意味着新农村的民主政治建设,但在目前的一些农村两委之间却仍经常产生矛盾和冲突。通过透视其矛盾状态及成因,为化解“两委”矛盾提供参考。  相似文献   

教育人力资本积累、分布与经济增长动能的转换——来自新中国70年的经验证据     

黄维海  张晓可 《教育与经济》2021,37(1):29-38,49

借助新中国成立以来的历史数据,分析70年间中国经济高速增长的主要动能及其转换过程。通过数理推导,首先扩展出含有人力资本分布的经济增长模型,然后对各个历史时期的增长动能进行分解,发现实物资本对经济增长始终具有重要的促进作用,人力资本则在20世纪90年代后开始显著促进经济增长,逐渐成为保持中国经济持续增长的新动能。人力资本分布对经济增长的影响以人力资本积累产生显著作用为前提,分布的平衡化有利于人力资本的积累和溢出效应,进而间接促进经济增长,但促进中国经济增长的人力资本结构不是按照受教育程度“阶梯型”分布,而是“剪刀型”分布。因此,应当将人力资本作为经济增长新旧动能转换的着力点,进一步优化教育资源投入,改善人力资本结构,使人力资本积累及其结构更好地耦合产业结构调整和升级,更有效地赋能经济增长。  相似文献   

Hemin-induced increase in saponin content contributes to the alleviation of osmotic and cold stress damage to Conyza blinii in a heme oxygenase 1-dependent manner     

Zheng  Tianrun  Zhan  Junyi  Yang  Ming  Wang  Maojia  Sun  Wenjun  Shan  Zhi  Chen  Hui 《Journal of Zhejiang University. Science. B》2021,22(8):682-694

Hemin can improve the stress resistance of plants through the heme oxygenase system. Additionally, substances contained in plants, such as secondary metabolites, can improve stress resistance. However, few studies have explored the effects of hemin on secondary metabolite content. Therefore, the effects of hemin on saponin synthesis and the mechanism of plant injury relief by hemin in Conyza blinii were investigated in this study. Hemin treatment promoted plant growth and increased the antioxidant enzyme activity and saponin content of C. blinii under osmotic stress and cold stress. Further study showed that hemin could provide sufficient precursors for saponin synthesis by improving the photosynthetic capacity of C. blinii and increasing the gene expression of key enzymes in the saponin synthesis pathway, thus increasing the saponin content. Moreover, the promotion effect of hemin on saponin synthesis is dependent on heme oxygenase-1 and can be reversed by the inhibitor Zn-protoporphyrin-IX(ZnPPIX). This study revealed that hemin can increase the saponin content of C. blinii and alleviate the damage caused by abiotic stress, and it also broadened the understanding of the relationship between hemin and secondary metabolites in plant abiotic stress relief.  相似文献   

Red light enhances folate accumulation in wheat seedlings     

Chang  Jianwei  Xie  Chong  Wang  Pei  Gu  Zhenxin  Han  Yongbin  Yang  Runqiang 《Journal of Zhejiang University. Science. B》2021,22(11):906-916

Journal of Zhejiang University-SCIENCE B - Red, white, blue, green, and yellow lights were applied to investigate their effects on folate accumulation in wheat seedlings. The different lights,...  相似文献   

深化化学实验教学改革,提高农科学生综合素质   总被引：5，自引：1，他引：5  

杨春龙  杨红  兰叶青  陈道文  杨明敏  周刚 《实验技术与管理》2007,24(3):19-21

该文从提高农科大学生的综合素质出发,结合化学实验教学中心建设和化学实验教学综合改革的实际,阐述了实验教学在培养学生素质中的重要意义,介绍了南京农业大学在建立实验教学管理新模式方面的积极探索,在实验教学体系和教学内容改革方面取得的进展,以及在运用实验教学新方法和新手段方面取得的成效。  相似文献   

An empirical approach based on quantile regression for estimating citation ageing     

《Journal of Informetrics》2019,13(2):738-750

An aspect of citation behavior, which has received longstanding attention in research, is how articles’ received citations evolve as time passes since their publication (i.e., citation ageing). Citation ageing has been studied mainly by the formulation and fit of mathematical models of diverse complexity. Commonly, these models restrict the shape of citation ageing functions and explicitly take into account factors known to influence citation ageing. An alternative—and less studied—approach is to estimate citation ageing functions using data-driven strategies. However, research following the latter approach has not been consistent in taking into account those factors known to influence citation ageing. In this article, we propose a model-free approach for estimating citation ageing functions which combines quantile regression with a non-parametric specification able to capture citation inflation. The proposed strategy allows taking into account field of research effects, impact level effects, citation inflation effects and skewness in the distribution of cites effects. To test our methodology, we collected a large dataset consisting of more than five million citations to 59,707 research articles spanning 12 dissimilar fields of research and, with this data in hand, tested the proposed strategy.  相似文献   

Embracing the Spiral: An Action Research Assessment of a Library-Honors First Year Collaboration     

《The Journal of Academic Librarianship》2019,45(5):102042

Librarians often use assessment methodologies to evaluate the efficacy and impact of their information literacy instruction sessions and programs. In this article, researchers use an action research methodology to explore the effect of information literacy instruction on first-year honors student assignments. The researchers explain how they implemented multiple cycles of planning, acting, observing, and reflecting in order to better understand student needs, increase the impact of library instruction, and communicate that impact to library and external stakeholders. Robust and cyclical assessment gave librarians and their strategic partners the opportunity to make iterative improvements to instruction, address issues of overconfidence in students, and make the case for additional information literacy instructional opportunities for honors students.  相似文献