论加强和改进大学生教育与管理工作

从四个方面阐述了如何加强和改进大学生教育与管理工作,其中大学生教育与管理的机构设置是前提、队伍建设是保证、工作原则是方向、工作方法是关键。在大学生教育与管理工作中,必须解放思想、实事求是、与时俱进,不断探索和解决大学生教育与管理新的课题。     

加快科技成果向生产力转化的思路与对策

加快科技成果向生产力转化是现代经济社会发展的一个永恒主题.本文在阐明科技成果向生产力转化的重大作用和意义的基础上,从产品生成和发展的内在规律出发,提出了促进科技成果转化的"链条理论"以及加快科技成果向生产力转化的指导思想、基本方针和应该特别关注的几个问题,并结合实际提出了具有操作性的对策建议.     

Automatic selection of the proper family for simultaneous confidence intervals

Statisticians often employ simultaneous confidence intervals to reduce the likelihood of their drawing false conclusions when they must make a number of comparisons. To do this properly, it is necessary to consider the family of comparisons over which simultaneous confidence must be assured. Sometimes it is not clear what family of comparisons is appropriate. We describe how computer software can monitor the types of contrasts a user examines, and select the smallest family of contrasts that is likely to be of interest. We also describe how to calculate simultaneous confidence intervals for these families using a hybrid of the Bonferroni and Scheffé methods. Our method is especially suitable for problems with discrete and continuous predictors.     

大熊猫主食竹种微量元素研究

用原子吸收分光光度法测定了卧龙自然保护区大熊猫主食竹种——冷箭竹(Bashania fangiana)、拐棍竹(Fargesia robusta)、华西箭竹(Fargesia nit-ida)、峨眉玉山竹(Yushaia chungii)的叶、笋——幼竹、一年杆、二年杆兵208例中的 Cu、Zn、Mn、Fe、Ca、Mg、K 等七种元素含量.找到了微量元素含量与竹类、竹龄、竹株部位、竹的生长环境(海拔高度、季节)以及与大熊猫食性等的关系。     

蓝宝石微带色散特性研究

本文将谱域导纳法推广应用于各向异性介质基片微带,通过详细的理论分析,导出了各向异性等效传输线的特性导纳公式,并考虑了导带厚度的影响,建立了各向异性介质基片平面传输线传播常数色散特性的计算机程序。用本文推导的结果进行数值计算,在2-18GHz内求得的蓝宝石微带色散曲线与文献[1]的结果吻合得很好。此外,本方法直接、简明、且计算量小、适用于各类微波平面传输线的分析。因而,其具有较大的工程实用价值。     

选择价值工程改进对象的动态排序模型

从一个复杂系统中,合理地选择重点改进对象,是有效开展价值工程活动的基础。本文在分析最合适区域法存在的问题的基础上,提出选择价值工程改进对象的动态排序模型。     

STEIN'S METHOD AND THE BERRY-ESSÉEN THEOREM

Stein's method is used to prove the Lindeberg-Feller theorem and a generalization of the Berry-Esséen theorem. The arguments involve only manipulation of probability inequalities, and form an attractive alternative to the less direct Fourier-analytic methods which are traditionally employed.     

Long-range correlation analysis of the Wichmann-Hill random number generator

The distribution of points (r _n,r _n+s), n = 0, 1, 2,...whose coordinates are terms at distance s of the pseudorandom sequence generated by the Wichmann and Hill method is studied. It is known that for many congruential generators critical values of the distance s exist such that these points, far from being uniformly distributed, are concentrated on very few lines. An algorithm is described for computing the critical distances within the Wichmann-Hill sequence and the results obtained are compared with those of other linear congruential generators.     

以模拟为基础的氨合成塔内件优化设计计算

本文提出以模拟为基础，以氨净值为目标函数，以上绝热层，冷管层，下绝热层高度为调优变量的氨合成塔内件优化设计计算方法，并编制了相应的计算程序，实例表明本法具有简单、可靠、快速等特点。     

示波药物分析的研究——非那西丁的测定

示波极谱滴定——NaNO_2法具有快速准确的特点。本文报道了在40mL 6mol/L HCI—1.5g KBr的溶液中,以微铂电极为指示电极,以铂片电极作为参比电极,采用示波极谱滴定——NaNO_2法测定了非那西丁。通过ι检验,该法与药典法所测结果无显著性差异,表明该法可靠。