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��[Purpose/significance] By means of the classification and circulation data of library collection, the paper finds the close correlation between reader characteristics and library collection circulation, establish the relationship model. And through model fitting and prediction, this study explores the implicit rule between reader and library circulation which provides technical and means support for the intelligent management of library.[Method/process] Firstly, this paper used clustering and correlation analysis techniques to extract the macroscopic observable characteristics of readers, constructed the direct and indirect mapping relationship between reader characteristics and book classification, and then constructed the regression model of the circulation of reader characteristics and classified books, and verified the validity of the model and optimized the goodness of fit of the model. According to the effective model, this paper explored the trend change of library circulation, and sum up the underlying rules of knowledge construction of the macroscopic characteristics of readers, as well as the impact on the circulation of books.[Result/conclusion] There are 3 classification characteristics of readers, namely, the professional learning direction representing the social role requirements of readers, the enrollment batch representing the interaction effect between readers and the number of readers, which can effectively fit and predict the book circulation. The prediction results show that the model has high accuracy and can be used as an effective tool to provide reliable technical support for library to develop knowledge service.     

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从馆藏、馆舍、工作人员、管理、用户教育与情报服务、自动化网络化等方面,介绍了80年代以来中国高校图书馆的发展,并对其前景作了展望。     

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综述了我国图书馆自动化的现状及进展 ,重点列举了一些具有代表意义的图书馆信息管理系统 ,概括出 2 0世纪 90年代图书馆自动化的发展态势 ;描述了图书馆自动化网络的发展现状 ;最后勾画了中国图书馆自动化和网络化的发展前景     

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绯牡丹，仙人掌科裸萼属牡丹玉(Gyrn—nocaiun minanovichii var.fricdrichii)的园艺变种，瑞云牡丹分离出来的纯红品种。     

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讨论信息网络化环境下情报交流的新变化 ,提出半正式情报交流模式的新概念     

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研究数字化、网络人时代期刊管理所面临的诸多问题,提出规范化、标准化建设有利于期刊管理工作的新认识。     

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探讨信息社会图书馆的走向,提出如何对图书馆进行现代建设和改造的看法     

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 本文通过对某钢厂滚动接触疲劳寿命较低的S55C轴承钢取样做蓝脆断口试验：SEM显微形貌分析和红外吸收光谱测定试样中碳、硫的不均匀度等理化特性分析,同时对该钢的宏观夹杂物进行测定,发现该钢半径二分之一区域处的碳、硫等元素的含量较高,边部与心部都为负偏析,而且其断口SEM的显微形态上有硫化物的析出并伴随微区的沿晶断裂,从而找出了导致该钢疲劳寿命较低的主要原因。     

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研究了在低温回火温度范围内,不同回火温度对新型高强韧微变形钢（GDL-1）断裂性能的影响,分析了7种不同热处理状态的断裂性能。结果表明,空冷状态的断裂韧度、冲击韧度要高于油淬状态,空冷后的残余奥氏体量高于油淬后的残留奥氏体量,此外低温回火改善钢的韧性,并使残余奥氏体的稳定性提高,从而使该钢在空冷250-300℃回火后具有良好的断裂韧性。