图书馆在现代远程开放教育体系中的作用

根据现代远程开放教育的特点，论述了网络化图书馆为远程开放教育教学支持服务体系不可缺少的组成部分。着重从提高现代化服务水平，强化图书馆远程服务的工作项目和内容，加强多媒体馆藏资源建设和多媒体文献资源的展示工作，充分利用各种媒体资源，做好图书馆的远程教育学习支持服务工作等方面。浅析对图书馆在远程开放教育学习支持服务体系中的应起到的作用。     

龙头锰矿缓倾斜多层邻近薄矿体采矿方法试验研究

本文根据龙头锰矿试验矿块的地质条件和试采一年多以来的实测数据,以及室内相似材料模拟试验结果,分析研究缓倾斜多层邻近薄矿体的开采方法。研究表明,矿层群的开采,特别是近距、低品位矿层群的开采,多以分采为宜;只要合理选择凿岩爆破参数,和采取正确的台阶形式,能安全回采多层矿体而又不破坏厚度仅为2.7～2.9米的隔层。     

分解协调控制原理在油泵实验台多功能仪中的应用

介绍了分解协调控制原理在油泵实验台多功能仪中的具体实现，设计了提取串行同步数据的电路，分析了其工作原理及应用。     

氢原子径向距离r~ν平均值的计算

利用氢原子径向波函数和拉盖尔多项式的性质,导出了计算氢原子径向距离r的任意整数次的平均值公式．     

评估数据的统计分析与修正

分别通过马氏距离分类和用因子调整消除评估问卷数的影响后再进行分类的统计方法，对中国科技大学教学质量评估问卷进行了分析，给任课老师一个横向可比的客观估计值，并提出了相应合理的问卷设计改进措施。     

Dynamical Mechanisms of Effects of Landslides on Long Distance Oil and Gas Pipelines

According to the investigations on the oil and gas pipelines such as the Lan-Cheng-Chong pipeline and the Southwest pipeline, there are two ways of laying pipeline： pipelines paralleling （approximately） to the main slide direction and pipelines perpendicular （approximately） to the main slide direction. If earth-retaining walls have been built for pipelines paralleling to the main slide direction, they will prevent the lands from sliding; On the contrary, without earth-retaining walls, the sharp broken rocks in the backfilling soil will scratch the safeguard of the pipeline when the landslides take place. Pipelines perpendicular to the main slide direction can be classified into four types according to the relative positions between pipelines and landslides： Pipelines over the slide planes, pipelines inside the fracture strips of slide planes, pipelines below the slide planes and pipelines behind the backsides of landslides. The different dynamical mechanisms of the process in which landslide acts against pipelines are analyzed based on whether the pipelines are equipped with fixed frusta, because the sliding resistance depends on whether and how many fixed frusta are equipped and the distance between frusta.     

A reduction algorithm for approximating a (nonmetric) dissimilarity by a tree distance

We propose a development stemming from Roux (1988). The principle is progressively to modify the dissimilarities so that every quadruple satisfies not only the additive inequality, as in Roux's method, but also all triangle inequalities. Our method thus ensures that the results are tree distances even when the observed dissimilarities are nonmetric. The method relies on the analytic solution of the least-squares projection onto a tree distance of the dissimilarities attached to a single quadruple. This goal is achieved by using geometric reasoning which also enables an easy proof of algorithm's convergence. This proof is simpler and more complete than that of Roux (1988) and applies to other similar reduction methods based on local least-squares projection. The method is illustrated using Case's (1978) data. Finally, we provide a comparative study with simulated data and show that our method compares favorably with that of Studier and Keppler (1988) which follows in the ADDTREE tradition (Sattath and Tversky 1977). Moreover, this study seems to indicate that our method's results are generally close to the global optimum according to variance accounted for.We offer sincere thanks to Gilles Caraux, Bernard Fichet, Alain Guénoche, and Maurice Roux for helpful discussions, advice, and for reading the preliminary versions of this paper. We are grateful to three anonymous referees and to the editor for many insightful comments. This research was supported in part by the GREG and the IA² network.     

己知基圆半径求解凸轮机构最佳中心距的解析方法

从摆动从动杆平面凸轮机构的类速度图出发，对最佳中心距ａ＊的客观存在性给予了清晰、直观的几何解释和论证，并由此建立起了求解最佳中心距ａ＊的解析法。     

跳高技术的力学分析

跳高的有效高度，根据人体重心位置可分为三个高度的总和，即Ｈ＝Ｈ１＋Ｈ２－Ｈ３。为进一步明确决定跳高高度诸因素的作用和它们之间的相互关系，对Ｈ１的重要性，如何加大Ｈ２的数值，减小Ｈ３的数值进行了深入的力学分析。     

多重训练BAM算法中强化系数的解析求取

从ＢＡＭ的能量函数出发推导出强化系数的解析解形式。在强化系数的作用下，ＢＡＭ网将被强化矢量对存储在皮知矢量对为中心Ｈｅｍｍｉｎｇ距离为１的邻域里的能量最小点，人而保证了该矢量对的正确联想。给出了根据此解析算式编制的算法和计算实例。