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71.
为分析《湘报》及其转载各类新闻报道的内容及其意义,对原始文献进行考证和统计,结果表明,《湘报》是戊戌维新运动时期资产阶级维新派在湖南长沙创办的一份以言论为主的报纸,同时也大量转载了国内外其他权威媒体的新闻消息和评论,主要包括时事政治新闻、新闻时事评论、自然科技新闻和商务经济新闻等。《湘报》转载的新闻报道对当时湖南整个社会风气的开化和推动湖南近代化进程起到了重要的作用。  相似文献   
72.
为厘清《利济学堂报》(1897)中关于近代农学知识的传播脉络,认识其对近代农业的指导意义及地位。采用传播统计和原始文献分析方法,统计了《利济学堂报》中涉及农学知识的篇目,共57篇文章,并归为农政、蚕桑、农作物、园艺、土壤肥料、植物保护、农贸、农产制造、农具等12个子类目。其中,蚕桑、农政、农作物、农产制造、土壤肥料五类所占比重较大,占所有文章的72%,并对所有类目作了内容分析,了解各自的发展态势,进而掌握农业这一整个学科的概貌。《利济学堂报》中分门别类的农学知识几乎囊括了现代农学的二级次生学科,为之后专业性农业期刊《农学报》的诞生提供了重要的学科分类标准及信息来源,"农学琐言"专栏的设列充分表明该刊认识到农业知识的重要性,为其后专业性农业科技期刊《农学报》的产生作了良好的铺垫作用。  相似文献   
73.
Goals for developing the Russian national standard GOST 7.0.202014, System of Standards for Information, Librarianship, and Publishing: Library Statistics: Indicators and Units of Calculation, were to create lists of statistical indicators for library and documentation activities and to establish the statistical units for measuring those activities. The regulations included in the new standard will improve Russian library statistics, since its indicators cover all areas of modern library work. Unified indicators and units of calculation will promote uniformity in the primary statistical data submitted. Such uniformity facilitates accurate comparison and analysis for planning, accounting, and forecasting.  相似文献   
74.
Summary

The legal publishing industry has experienced waves of acquisition and consolidation, with almost all of the established players becoming affiliated with either Thomson or Reed Elsevier. A widespread assumption is that this consolidation is driving out the smaller participants in the market, especially in conjunction with the expansion of free Web sites for primary source material. It is presumed that the entrepreneurs who have smaller, profit-based companies are becoming less interested in the market due to financial pressures, increased difficulty of capturing market share, and threat of acquisition (friendly or hostile).

In order to confirm or refute this assumption, the author reviews the industry consolidations, describes the delineation of representative small legal publishers, and analyzes their responses to questions about how the recent industry changes have affected their strategies, markets and product lines. The resulting picture is of an environment much different than that painted by current media pundits. Contrary to the presumption of a disappearing landscape of small players, there is a positive perception of “ripe opportunity” pushing companies into this marketplace-companies armed with new technology tools and strong convictions that they can reach customers ready and willing to do old business in new ways. The small publishers seem to be weathering the climactic industry changes, and have expectations of growth and expansion.  相似文献   
75.
ABSTRACT

Digital libraries and collections are a growing facet of today's traditional library. Digital library technologies have become increasingly more sophisticated in the effort to provide more and better access to the collections they contain. The evaluation of the usability of these technologies has not kept pace with technological developments, however, and the end-user has in some cases been left behind. This research study evaluates the usability of digital collections created using the CONTENTdm Digital Collection Management System, a software system used by the University of North Carolina at Chapel Hill. Specifically, this study addresses the following questions: Does CONTENTdm meet users' needs? Is the interface sufficiently intuitive for them to use it? Is the experience of exploring digital collections using CONTENTdm satisfying to users? Employing usability testing techniques with actual-end users, this study attempts to assess the efficacy of the CONTENTdm public interface as well as user attitudes toward it. Ten participants from three user groups—faculty, library science graduate students, and the general public—performed eleven tasks designed to test the key functions of CONTENTdm-created collections and then answered a series of questions about their experiences. Key findings from this study indicate that while the included digital collections are useful and desirable to end-users, the interface generated by CONTENTdm can be confusing even for those who have considerable experience using the Internet. Results from this study may be used to improve this software system and add to the literature surrounding the usability of digital libraries in general.  相似文献   
76.
β—环糊精与香精包合物的制备及紫外光谱和差热分析   总被引:2,自引:0,他引:2  
李伟  张宁 《天中学刊》2000,15(5):16-19
制备了β-环糊精与薄荷、玫瑰等7种香精的包合物,在紫外区有吸收峰的香精,其紫外光谱与包合物水溶液的紫外光谱的峰形一致,保持香精浓度不变,β-环糊精的加入对最大吸收的波长和吸光度的影响很小,香精包合物的差热分析表明,除玫瑰和菠萝香精包合物外,其他5种香精的包合物在温度低于230℃的条件下是稳定的。  相似文献   
77.
本文利用随机变量数字特征分析了算术平均值滤波器的信噪比,并指出应用中需注意的问题。  相似文献   
78.
本文对利用两台沥青摊铺机进行基层施工作业的工艺方案、技术措施、施工组织、施工质量、效益等方面的问题进行了讨论和分析,并较深入地对离析、标高、平整度等进行了评价。  相似文献   
79.
本文主要论述了二元关系R的自反,对称,传递,相容,半序与等价关系的闭包运算的有关性质,同时给出了R的相容闭包,半序闭包和等价闭包。  相似文献   
80.
对慢性支气管炎急性发作期和缓解期患者机体免疫功能进行了研究,用荧光单抗CD^ 3、CD^ 25对T淋巴细胞进行标记和计数。检测结果,慢性支气管炎急性发作期患者内T淋巴细胞活化率降低,造成T淋巴细胞总数减少,认为因慢性支气管炎急性期患者T淋巴细胞总数养活和免疫功能紊乱,因此在治疗疾病过程中除对症处理外,还须配合使用提高功能药物,改善免疫功能。  相似文献   
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