Moments and generating functions for the absortion distribution and its negative binomial analogue

The moments of the absorption are difficult to obtain. The generating functions are basic hypergeometric functions. This paper shows how to define two shift operators that allow elementary arguments to be used to develop recursions for the expected values of general functions. The exact moments of the distribution follow. The generating function for the negative binomial analogue gives the moments directly.     

发达经济体与新兴经济体竞争力比较——基于全球竞争力指数视角

在经济全球化的今天,发达经济体与新兴经济体之间的竞争日益激烈.首先,选取30个发达经济体和29个新兴经济体的基本要素指标、效率因素指标和创新因素指标,对发达经济体与新兴经济体竞争力孰强孰弱这一问题进行研究.其次,通过对各指标的计算和比较,得出新兴经济体竞争力仍比较弱的结论.最后,提出新兴经济体要想提升自身竞争力必须从政治制度、宏观经济运行、教育发展、基础设施建设等方面进行改进和完善的政策建议.     

Microfilm Serial Backfiles

Abstract

The purpose of this article is to highlight the status and application of automated serials control in three central university libraries in India—namely, Aligarh Muslim University (AMU), Jamia Millia Islamia (JMI), and Jawaharlal Nehru University (JNU). All three libraries have started to automate their serials processes, choosing either the Libsys or Virtua integrated library systems. AMU and JMI selected Libsys, while JNU installed Virtua—a product of VTLS Inc. Findings suggest that reasonable progress has been made with the use of different features of serials control systems in all these libraries. This information is helpful for other universities where libraries want to start the automation process.     

Reviews

Abstract

Elizabeth Parang reviews Reengineering the Library: Issues in Electronic Resources Management. Scott Johnson reviews Academic Library Management: Case Studies.     

Rethinking Print Periodicals Holdings Retention Policy in Small Academic Libraries

Abstract

Collection development policies in small academic libraries may lack a formal policy statement about print periodical holdings retention. However, there is a need for a distinct policy about print periodicals holdings and their retention. Periodicals collections at academic libraries have been greatly affected by publishers’ decisions to discontinue print journal formats and move to online-only electronic versions. The move from one format to another produces challenges to the retention of an effective print periodicals collection. Given these continuous changes in publication format, it is necessary for academic libraries to rethink their print periodicals holdings retention. This article will present a literature review on and case study of periodicals collection management and explore strategies for developing holdings policies and guidelines for retention. It will argue that collection development policies ought to include a separate policy for the print periodicals collection and that unlike their reputation for being time-consuming and inflexible, periodical retention policies can improve flexibility and guide in decision making, helping to preserve core titles and acquire new titles that support academic programs and the work of the college community.     

高校基础研究投入与地区创新——来自地级市层面的经验证据

基于2008-2014年地级市层面的面板数据,实证检验了高校基础研究投入对地区创新存在着先抑制后促进的“U”型非线性影响效应。进一步的DID识别策略表明,高校基础研究政策促进了中国地级市层面除外观设计专利之外的创新,但不会促进地级市层面的全要素生产率提升,由此解释了高校基础研究对中国经济增长难以形成有效支撑的现象。     

学业质量增值评价数学模型的比较研究——以西部某区教育实证数据为例

增值评价是以学生成长为核心,以学校发展为目标的一种评价方式,可以更公平地评价学校效能。增值评价有多种数学模型,其中,与基于平均名次、基于标准分的两种模型相比,基于学生成长百分位和多层线性回归两种模型的优势在于能够避免优秀学生增值空间受限的问题。在多层线性回归模型中纳入学生性别、家庭社会经济地位指数等学校不可控的生源因素,可有效排除生源因素对学生的影响,更符合关注学校“净效能”的评价理念。     

大学生思政教育空间转向的内在逻辑、价值意蕴与基本原则

新时代背景下,社会空间的不断嬗变呼吁着大学生思想政治教育各要素在社会空间中不断重塑与构建,从而促使大学生思想政治教育空间从传统单向空间转向现代多元空间。大学生思想政治教育空间转向是对马克思社会空间理论的继承发展,是对新时代思想政治教育发展要求的现实回应。厘清大学生思想政治教育空间转向的内在逻辑、价值意蕴与基本原则,可为新时代大学生思想政治教育发展提供创新契机,推动构建符合社会发展、时代潮流和主流价值的现代教育空间,进而提升高校思想政治工作的质量和实效。     

What you say,and how you say it: Preschoolers' growth in vocabulary and communication skills differentially predict kindergarten academic achievement and self‐regulation

The idea that language skills support school readiness, predicting later self‐regulation and academic success, is widely accepted. Although vocabulary is often emphasized in the developmental literature, the ability to use language appropriately in the classroom, or social communication skills, may also be critical. This article examined longitudinal contributions of children's vocabulary and social communication skills, from preschool to kindergarten, to kindergarten academic achievement (reading and math) and self‐regulation (executive functions and learning behaviors). Participants were 164 children (14% Latinx, 30% Black, 56% White; 57% girls) enrolled in Head Start programs. Results revealed that initial levels and growth in vocabulary and communication skills predicted better academic achievement. Social communication skills uniquely predicted self‐regulation, after accounting for vocabulary. We discuss potential mechanisms for these links and recommend that strategies to build social communication skills be incorporated in preschool interventions promoting school readiness.     

中国基本医疗保险的实际参保率及其分布特征:基于多源数据的分析

全民覆盖是基本医疗保险降低国民医疗费用负担的前提条件。中国基本医疗保险是否实现了全民覆盖仍存在争议。本文利用多源调查数据,分析了我国基本医疗保险实际参保率及其分布特征。不同来源的数据基本证实,2015-2016年,中国仍有超过10%的国民没有参加任何一项基本医疗保险制度。其中,城镇居民、非农户口和没有户口的居民、东北地区、年轻人、儿童、未就业人群、低收入人群、在校学生以及流动人口基本医疗保险实际参保率更低。城乡居民实行自愿参保,因管理部门分割、信息系统不统一导致的重复参保以及因财政补贴制度导致的户籍地参保等制度设计,是导致基本医疗保险未能实现全民覆盖的根源。要实现基本医疗保险全民覆盖,解决国民医疗后顾之忧,未来我国基本医疗保险应实行强制参保、以家庭为单元参保、常住地参保,建立全国统一的基本医疗保险信息系统,并鼓励发展补充性医疗保障制度。