图书馆应重视古旧书报刊收藏--兼谈《中国古旧书报收藏交流指南》

针对高校图书馆古旧书报刊流失损耗的问题，提出高校图书馆、公共图书馆应该重视古旧书报刊收藏。请有关领导给予经济、人力支持；并愿图书馆从业人员增强古旧书报刊的收藏意识，学习古、旧书报刊收藏知识。     

数字图书馆网络存储模式评析

本文介绍了目前主要的存储体系结构，分析了各种体系结构的主要特点和适用环境，并对数字图书馆的存储发展趋势作了一些探讨。     

如何提高数字图书馆设备的采购质量

本文从设备的先进性与实用性、经济性之间的关系，考虑设备的安全性、稳定性和可靠性，准备招投标文件和保证设备的质量、可维护性等方面论述了如何提高数字图书馆设备的采购质量。     

网络存储领域内的核心技术——iSCSI

数据的异地实时存储日趋增多使得网络存储技术日渐重要。iSCSI 作为网络存储的核心技术充分利用了现有IP 网络的成熟性和普及性优势, 对经济合理以及便于管理的存储设备提供了直接访问的能力, 其低廉、便捷、开放、安全、标准等众多优异品质在未来必将得到充分的完善与发展。     

Understanding storage environmental stability during power outages: A key issue in sub-tropical climates

Efficient air-conditioning systems facilitate climate control in modern museums, libraries, and archives. The climate in Hong Kong is typically hot and humid, so the survival of collections is highly dependent on 24-hour air-conditioning systems to maintain the desired environment in repositories of archives and books, or artefact stores. The continuous operation of such systems in turn relies on a number of factors, such as uninterrupted electricity supply, an active maintenance programme, daily monitoring of their performance and quick response to irregularities as well as backup or alternative systems to support the air-conditioning load in case they are down for servicing. From the risk management point of view, unlike the latter four factors, electricity supply is an external factor that cannot be guaranteed. Fluctuation in the power level that results in stoppage of air-conditioning equipment is not uncommon even in well-developed countries. Long power outages could be catastrophic as they might lead to irreversible damage to collection items as a result of fast, large, changes in temperature and relative humidity (RH) towards the external environment if the air-tightness or hygrothermal stability of the storage are not good enough. Understanding storage environmental stability, especially during electrical power disruptions, is an essential part of the preservation measures and disaster preparedness necessary to protect valuable collections in cultural heritage institutions in the region.     

Comparison of three web-scale discovery services for health sciences research

Objective

The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries.

Methods

Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris''s Primo, and ProQuest''s Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content.

Results

All WSD tools returned between 50%–60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE.

Conclusions

None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%–60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools'' value as a supplement to traditional resources for health sciences researchers.     

Multimedia augmented m-learning: Issues,trends and open challenges

The advancement in mobile technology and the introduction of cloud computing systems enable the use of educational materials on mobile devices for a location- and time-agnostic learning process. These educational materials are delivered in the form of data and compute-intensive multimedia-enabled learning objects. Given these constraints, the desired objective of mobile learning (m-learning) may not be achieved. Accordingly, a number of m-learning systems are being developed by the industry and academia to transform society into a pervasive educational institute. However, no guideline on the technical issues concerning the m-learning environment is available. In this study, we present a taxonomy of such technical issues that can impede the life cycle of multimedia-enabled m-learning applications. The taxonomy is devised based on the issues related to mobile device heterogeneity, network performance, content heterogeneity, content delivery, and user expectation. These issues are discussed, along with their causes and measures, to achieve solutions. Furthermore, we identify several trending areas through which the adaptability and acceptability of multimedia-enabled m-learning platforms can be increased. Finally, we discuss open challenges, such as low complexity encoding, data dependency, measurement and modeling, interoperability, and security as future research directions.     

元散曲中云意象研究

元散曲中的云意象具有符合时代特征的新内涵。其中"闲枕白云卧"意象表现了一种彻底的隐逸情怀;"懒云窝"意象象征着自由自在的精神庇护所;"风云"意象被消解了作为君臣相得象征的积极精神,具有了虚无的悲观消极色彩;而"云雨"意象对"云雨"固定具有男女交媾之意起了推动作用。元散曲中云意象的这些新特点,来自于作者对生活的认识,他们看似识破天机,通过"避世"来获取精神的安宁,却又潜藏不平,借"玩世"精神故意用一种直白浅露甚至庸俗来消解传统,从而在散曲中通过云意象的创造实现了对自己心灵的一丝安慰。     

云计算与网络教育资源管理的整合研究

云计算是通过网络把多个成本相对较低的计算实体整合成一个具有强大计算能力的系统,如果把网络上存在的众多个教育资源库按照云计算思想组织管理起来,势必能够提高资源的利用率、共享率,同时也降低了客户端的压力．