数字化资源压缩格式比较研究

数字资源格式繁多,涉及的技术和标准也各不相同。文章对目前国内外流行的资源 格式进行了比较和分析,为数字图书馆建设中的资源格式选择进行了研究。     

深圳地区公共图书馆老年读者服务状况研究

为构建公共图书馆老年读者服务全城联动的服务模式,在调查了深圳地区9个公共图书馆开展老年读者服务的状况后,从图书、期刊、音像资料三方面分析老年读者的借阅行为,提出了公共图书馆开展老年读者服务的策略.     

CALIS地区中心职能定位分析

对中国高等教育文献保障系统（CALIS）地区中心的工作目标、机构职能进行了分析和讨论,提出了该系统地区中心应具备的五项基本职能。     

传统与创新——对公共图书馆公益性及延伸服务的思考

文章阐述了公共图书馆的本质属性和服务宗旨,将公共图书馆的公益服务视为传统的精华,对其现状进行了分析,提出了公共图书馆在构建公共文化服务体系建设的实践中,应充分体现公益性。文章认为延伸服务是传统服务的创新,对公共图书馆开展延伸服务的现状;指出了存在的问题,并提出了公共图书馆开展延伸服务的时策。     

Video tutorials revisited: The relationship between their use and library assessment quiz scores

There is considerable literature evaluating video tutorials. By the first decade of the twenty-first century, research established that online video tutorials performed as well as traditional face-to-face instruction. However, there is little evidence that students actually viewed the tutorials. This study compares postinstruction assessment quiz scores from one class over four semesters with usage statistics for five video tutorials during the same time frame. The data indicate that students do view the tutorials. However, the results also show that usage statistics, together with quiz scores, declined as students progressed through the five tutorials. Additionally, the study determined that there was no positive correlation between the number of viewings and postviewing assessment scores.     

Internationalizing Reference Education

Reference instruction should also involve preparing library and information science students for working with international students. There are numerous options for embedding such content into courses. In addition, professional organizations offers students with many opportunities to launch their international experiences.     

无机化学中自由焓——氧化态图的应用

无机化学中元素及其化合物的氧化还原性在不同介质中、不同氧化态时表现出较大差异,其变化规律不易把握。可应用元素及其化合物的自由焓-氧化态图对其相对稳定性、歧化反应发生的可能性、氧化还原反应进行的趋向性以及氧化还原能力大小等性质进行判断。     

浅谈英语委婉语的语用功能及其特征

委婉语既是一种语言现象,也是一种文化现象,更是一种社会现象。在一定程度上,它反映了社会的价值观和审美观。文章从语用学的角度分析了英语委婉语广泛使用的社会背景、功能及其特征,认为准确使用委婉语有助于信息传递的顺利进行并促进人们的日常交流。     

Weighted approximation of functions with singularities by Bernstein operators

As an important type of polynomial approximation, approximation of functions by Bernstein operators is an important topic in approximation theory and computational theory. This paper gives global and pointwise estimates for weighted approximation of functions with singularities by Bernstein operators. The main results are the Jackson＇s estimates of functions f∈ （Wwλ）2 andre Cw, which extends the result of （Della Vecchia et al., 2004）.     

制定标准化质量监控体系构建成人高校教学督导机制

通过对成人高校教学督导机制背景及趋势的分析,提出应根据成人高校教学督导的性质、任务、工作原则和方法制定课堂教学督导流程;遵循国际化标准构建在全面教学质量管理体系中运行的成人高校教学督导机制,推动课堂教学质量水平的提高。