The Changing Landscape of Information Access:

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Nine Years after Implementing the Unthinkable: The Cessation of Periodical Check-in at the University of Nevada,Reno

In 2001, librarians at the University of Nevada, Reno, carried out what some considered a radical experiment in the library world: an end to the check-in of print periodicals in exchange for allocating staff resources to support electronic resources. Nine years later, the authors assessed current print serials management practices in a new and changed environment through a survey and interviews. This article presents the assessment results, discusses the directions taken over the years, the benefits and challenges, and offers suggestions for other libraries interested in exploring such a project.     

调节动物脂肪酸合成的核转录因子

脂肪酸的从头合成主要发生在肝脏和脂肪组织,肝脏脂肪酸的合成受到多种因素的调节,文章重点介绍调节脂肪酸合成的核转录因子:肝脏X受体固醇调节元件结合蛋白、碳水化合物反应元件结合蛋白。     

从共指现象看约束原则的不足

共指现象是句法研究的重要课题。Noam Chomsky(1981)从"管辖与约束"的角度研究代词尤其是反身代词的照应,然而其单纯的句法分析存在一些问题。因此,不同的研究方法继而被应用到揭示照应的意义和特征中,比如van Hoek(1997)从认知角度出发,基于可及理论提出"观念参照点"和"领地"的分析框架。共两大部分,通过举例分析约束原则,结合van Hoek的照应理论进一步阐述共指现象,指出前者的不足。     

Significance of Vitamin D Binding Protein in Assessing Vitamin D Status Among Under-Five Children

Despite ample sunshine, 50–90% Indian children have Vitamin D deficiency (VDD). This enigma of widespread VDD needs exploration especially among under-fives as physiological variations in Vitamin D Binding Protein (VDBP) levels could be potential confounders in the interpretation of total 25-hydroxyvitamin D [25(OH)D]. However, there is scarce information about relevance of VDBP levels in under-five age group. We therefore, explored association of VDBP levels among 1–5 year old children with VDD. Serum levels of 25(OH)D, VDBP, calcium, parathyroid hormone (PTH) and alkaline phosphatase were estimated in 210 apparently healthy children in the age group of 1–5 years. VDD was defined as serum 25(OH)D levels < 20 ng/ml as per the IOM classification. VDBP levels were classified as low if levels were < 168 μg/ml as per the kit. The prevalence of VDD was 79.5% (n = 167) and VDBP levels were low in 48.6% (n = 102) of children. 25(OH)D levels correlated positively with VDBP (r = 0.298, p = 0.0001). A significant number of children (52.7%) with VDD had low VDBP (p = 0.015). and despite adequate sun exposure, 43% of children showed VDD and 56.6% had low VDPB levels. The low VDBP levels largely explain low 25OHD levels without necessarily implying VDD. It may add a new dimension for better understanding of widespread VDD among under-five children. It thus, points towards the need for redefining cut offs and complete evaluation of vitamin D status among under-fives including VDBP.     

元数据管理中语义绑定服务的功能及其实现形式

语义绑定服务（SBS）是一个管理语义绑定集合的稳定服务,这种绑定代表了数据与元数据、元数据与知识实体之间的关联。了解语义绑定服务的功能及其实现形式将有助于更好地进行元数据管理、开展信息组织工作。     

Li-C6H6体系电子性质的理论研究

采用密度泛函理论（Drr）的B3LYP函数,选取6-311＋＋G＊＊、6-311G＊＊基组,对锂-苯体系的结构、结合能和电荷转移等性质进行了研究.理论计算表明：锂-苯体系存在束缚态和无束缚态两种稳定结构.通过自然键轨道（NBO）分析发现,束缚态结构中锂的2s价电子部分地转移到苯上,碳环发生姜-泰勒扭曲,不再是平面结构.     

关于中文期刊联合装订的初浅设想

资源共享已成为这个时代图书馆人的共识。文章从中文期刊装订的现状及弊端着手,对中文期刊的联合装订进行了探讨。参考文献3。     

现代汉语空语类句法分布探析

空语类理论在管辖与约束理论中占有十分重要的地位。通过空语类理论对汉语中空语类的类型及其句法分布进行介绍和讨论,更好地解释了汉语的一些语法现象。     

书籍装帧的设计原则与发展趋势

书籍装帧设计艺术是随着书籍的诞生而产生,并随着时代的发展而不断进步,它具有审美功能、工艺等多元本质。随着社会的发展,人们的审美意识在不断提高,人们不仅注重书籍的实用功能而且越来越注重它的审美价值。文章论述了书籍装帧设计艺术的审美原则和发展趋势,旨在给同行以借鉴,创作出更多更好的高品味装帧艺术作品。