经济史研究的新路径——《政治与经济之间——中国经济史专题研究》读后

以专著《政治与经济之间》研究特点为例,论证"政治-经济史"研究进路之必要及"以点带面,小题大做"研究方式之可行。经济与政治之间的密切关联表明:中国经济史研究不可撇开国家政权因素。高水平的研究一般都很重视研究方法,为避免经济史研究中的大而无当及空泛现象,需要运用历史"回溯"法找到恰当的切入点,以切入"点"带出纵向横向诸多层面的问题。运用"以点带面,小题大做"的研究方法要求研究者"主体"端正态度、提高学养,既要"苦读",亦要"深思"。     

锁相放大器的应用

对锁相放大器的原理、结构及其应用进行了比较全面的介绍,设计了测量光电器件的光谱特性的电路,并且利用锁相放大器测量了硒光电池的光谱特性,得到了较好的实验结果。     

《湘报》及其转载新闻报道研究

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。     

《利济学堂报》与其农学知识传播

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。     

汉语和维吾尔语名词性定中短语结构形式对比分析

无论是汉语还是维吾尔语,定中短语都是最重要的短语结构类型之一。文章对汉维语定中短语的各类结构形式进行对比分析,试图找出汉语与维吾尔语定中短语组合的语法规则的异同点。     

Library Statistics: The Russian National Standard

Goals for developing the Russian national standard GOST 7.0.20—2014, 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.     

CONTENTdm Digital Collection Management Software and End-User Efficacy

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.     

算术平均值滤波器抗噪性能分析及应用

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。     

利用两台沥青摊铺机摊铺基层在工程中的应用

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。     

试论关系闭包的运算性质

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。