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排序方式: 共有1049条查询结果,搜索用时 359 毫秒
51.

Objective

The research obtained information to plan data-related products and services.

Methods

Biomedical researchers in an academic medical center were selected using purposive sampling and interviewed using open-ended questions based on a literature review. Interviews were conducted until saturation was achieved.

Results

Interview responses informed library planners about researchers’ key data issues.

Conclusions

This approach proved valuable for planning data management products and services and raising library visibility among clients in the research data realm.  相似文献   
52.
Our meta-analysis investigates the effectiveness of the concept mapping method compared with the traditional teaching method, for the improvement of critical thinking ability and disposition outcomes. We included studies measuring students' critical thinking through standardised tests, comparing an experimental (concept mapping) group with a control (traditional teaching) one. Effect sizes for critical thinking ability and disposition outcomes were pooled with a random-effects model. We included in our meta-analysis 21 studies (108 comparisons) involving 1695 students. The concept mapping method was more effective than the traditional teaching method at posttest for the improvement of critical thinking ability (g = 0.531, 95% CI 0.279 to 0.783) and disposition (g = 0.648, 95% CI 0.266 to 1.031). Heterogeneity was moderate to high, Egger's test did not indicate any evidence of publication bias; however, both visual inspection of the Funnel plot and Duval and Tweedie's trim and fill method indicated potentially three missing studies for critical thinking ability and two for critical thinking disposition. Additionally, we analysed the potential moderating effect of students' demographic characteristics, educational conditions, concept mapping elaboration methods and allocation type. Allocation type was a significant moderator, having a strong effect on concept mapping for critical thinking abilities in randomised studies (g = 0.739, 95% CI 0.356 to 1.122), but its effect is low in non-randomised studies (g = 0.265, 95% CI 0.014 to 0.517).  相似文献   
53.
郭燕锦  徐鹏 《科技广场》2014,(1):155-159
通过分析江西省中小企业在技术创新方面存在的问题,结合科技查新工作,提出提升我省中小企业技术创新能力的建议和对策。  相似文献   
54.
Machine learning applications must continually utilize label information from the data stream to detect concept drift and adapt to the dynamic behavior. Due to the computational expensiveness of label information, it is impractical to assume that the data stream is fully labeled. Therefore, much research focusing on semi-supervised concept drift detection has been proposed. Despite the large research effort in the literature, there is a lack of analysis on the information resources required with the achievable concept drift detection accuracy. Hence, this paper aims to answer the unexplored research question of “How many labeled samples are required to detect concept drift accurately?” by proposing an analytical framework to analyze and estimate the information resources required to detect concept drift accurately. Specifically, this paper disintegrates the distribution-based concept drift detection task into a learning task and a dissimilarity measurement task for independent analyses. The analyses results are then correlated to estimate the required number of labels within a set of data samples to detect concept drift accurately. The proximity of the information resources estimation is evaluated empirically, where the results suggest that the estimation is accurate with high amount of information resources provided. Additionally, estimation results of a state-of-the-art method and a benchmark data set are reported to show the applicability of the estimation by proposed analytical framework within benchmarked environments. In general, the estimation from the proposed analytical framework can serve as guidance in designing systems with limited information resources. This paper also hopes to assist in identifying research gaps and inspiring new research ideas regarding the analysis of the amount of information resources required for accurate concept drift detection.  相似文献   
55.
信息技术的快速发展给图书馆工作带来了机遇与挑战,只有在观念、管理及服务等方面进行大力创新,才能极大地丰富图书馆服务内容,强化图书馆能力,进而创造出图书馆最佳的社会效益和经济效益.  相似文献   
56.
随着知识经济的迅猛发展和我国加入WTO,知识产权在经济发展中的地位与作用越来越重要。面对国内外市场一体化的激烈竞争和国际统一市场规则的约束,我们必须提高对知识产权的认识,增强全民的专利意识,加强对专利的开发、运用和保护。本文探讨了WTO环境下专利文献的作用及网上中外专利文献的检索与利用。  相似文献   
57.
Web of Science数据库检索系统   总被引:2,自引:0,他引:2  
吴旭  代根兴 《情报科学》2002,20(3):293-296,305
本文介绍美国ISI出版的Web of Science数据库检索系统。讨论了该系统的特点、检索界面、检索模式和方法、保存调用检索式、记录输出格式和下载方式等。  相似文献   
58.
国内引文数据库发展综述   总被引:4,自引:0,他引:4  
康延兴  李恩科 《情报科学》2004,22(6):765-768
本文主要从国内引文数据库发展的基本情况、主要应用情况、未来发展方向和建议三个方面叙述和分析了当前国内引文数据库的总体情况,并指出当前国内引文数据库应在注意深化和扩展应用的同时,力争在建设方面能有一个大的跨越式的发展。  相似文献   
59.
王晓梅  周越 《情报科学》2001,19(7):745-746,762
本文分析《中图法》第四版R大类的变动情况,提出了对R大类变动的建议。  相似文献   
60.
简述了图像数据库的发展,对图像数据库的结构、分类及其特性进行了研究。并讨论了图像数据库的数据模型。最后给出了图像数据库的检索方法。  相似文献   
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