开展现代统计学教学的必要性初探

掌握现代统计学知识，善于运用现代统计学的方法来分析问题和解决问题，是知识经济时代学生应对各种挑战所必须具备的知识和技能。对照经济发达国家对中学统计教学的成功经验，在我国中学教育中加强统计教育有着一定必要性和迫切性。     

Does Title-By-Title Selection Make a Difference? A Usage Analysis on Print Monograph Purchasing

This article compares the usage of print monographs acquired through firm orders and approval plans to determine whether title-by-title book selection makes a difference. The circulation data of print monographs acquired in a four-year period were extracted and separated according to their acquisition methods. Usage data were analyzed according to the Library of Congress Classification system and library's three subject area groups (Humanities, Social Sciences, and Sciences). The results indicate that books acquired via firm orders had a higher circulation rate in almost all subject areas. The authors discuss how the findings can be used to inform future collection practices.     

中文医学期刊中常用的统计分析方法

目前中文医学期刊中统计分析方法误用情况屡见不鲜.本文根据设计类型和资料类型,总结中文医学期刊中常见的统计分析方法,包括成组设计、配对/配伍组设计中常用的统计分析方法,并总结等级资料分析时需注意的事项及多因素分析的变量纳入方法,以供同人参考,旨在提高论文的科学性,改善中文医学期刊中统计学内容的编校质量.     

医学论文统计学的“度”问题分析及建议

结合典型案例,总结医学论文中统计学方法的选择、“统计学处理”与统计学结果描述中存在的与统计学的“度”有关的问题.分析出现这些问题的原因,并提出了改进措施.     

IP Address Data and its Place in the Library Community Today and in the Future

Internet Protocol (IP) technology has played an important role in the management of access to scholarly work within institutions since the advent of electronic publishing in the late 1990s. Despite recent efforts to explore alternative modes of authentication, the ubiquitous use of IP address authentication within the systems of libraries, publishers, and third party vendors around the world suggests it will continue to play a significant role for the foreseeable future. However, recent studies show that a large amount of the IP address data held within publisher systems is incorrect, improperly assigned, or requires clarification. Poor source data carries significant risks—not the least of which translates into unreliable usage reporting for libraries and publishers. The IP Registry is designed to help mitigate these challenges by creating a Registry of cleaned data that libraries and publishers can interact with in a centralized fashion thereby helping to ensure accuracy and reducing the level of resources necessary to manage and communicate changes to existing data. The database of more than 60,000 academic, corporate, and government libraries was created through the amalgamation of raw source data from more than 170 scholarly publishers. In addition to cleaned IP address data, the Registry includes standardized English naming, aliases, local language naming (and characters), hierarchies, and organizational IDs for each record. The importance of accurately understanding current usage and how libraries utilize published content is clear. Regardless of what the future holds, the need for a clean and stable source of IP address data is real for libraries, publishers, and vendors alike.     

“概率论”中的积分

本文较系统地介绍了“概率论”中的积分,并分类阐述了求这些积分的方法。     

浅谈电大工程数学中的古典概型教学

概率是电大开放教育工程数学中的一项重要教学内容。概率是在古典概型的基础上发展起来的,古典概型在概率中占有相当重要的地位,在社会生产、生活中及理论研究中有着重要的应用。作者结合几年来的教学实践谈谈对工程数学中古典概型教学的一些做法和体会。     

现代大学生公寓的电气设计

随着人们生活水平的提高,现代大学生在校生活的质量也要求得到提高,学生公寓是大学生生活和学习的一个重要环境,其设施相应要跟上,因此在电气设计方面也提出了更高配套要求.本文介绍了现代大学生公寓电气设计中的几个方面,包括强电系统的设计、接地及防雷保护系统的设计、弱电系统的设计等,建造满足现代大学生生活需要的学生公寓。     

概率方法在解决实际问题中的应用

举例说明如何利用概率论和随机过程的相关知识建立目标函数,求出最优值来解决实际问题。     

自由膨胀和扩散过程不可逆性的热统分析

从热力学观点和统计观点分别对自由膨胀和扩散过程的不可逆性进行了分析,从热力学观点来看,自由膨胀是在力学不可逆因素下发生的不可逆过程,扩散过程是在化学不可逆因素下发生的不可逆过程;从统计观点看,它们都是由热力学概率小的状态向概率大的状态变化,扩散过程可以看成是两个自由膨胀过程的叠加.