一类可分散镇定的线性大系统

本文研究用局部状态反馈使具有关联耦和的线性定常大系统镇定的问题，给出了一类可分散镇定的线性大系统，并提供了相应的分散镇定算法，文中结论是Ｓｅｚｅｒ和Ｈｕｓｅｙｉｎ在文［１］中所得结果的推广．     

一些有机染料和中间体的SHG效应

采用固体粉末方法，测试了苯系偶氮、嘧啶、吡啶酮、四氢喹啉甲川型染料，以及中间体共６２个有机分子的ＳＨＧ效应，发现其中１４个品种具有ＳＨＧ活性。考察了影响ＳＨＧ效应的有关因素，发现电子效应基本一致的硝基和氰基取代染料，呈现出完全不同的ＳＨＧ性质。说明电子效应并不是影响有机分子ＳＨＧ活性的唯一因素，ＰＰＰ－ＭＯ理论计算结果也证实了这点。     

含有非线性终结的三分子自催化统计模型（Ⅱ）

本文是文献[1]的第二部分。在此主要考察了同种中间产物的二重非线性终结反应系统的演化规律、稳定性及临界失稳点的涨落特征。通过对其反应扩散方程和非线性主方程的求解分析,得到了它的临界失稳曲线,发现它与线性终结的自催化三分子模型的反应系统有许多相似之处。其演化过程中出现的热力学分枝和涨落耗散规律也基本一致,只是失稳点的临界值有所不同,这在一定程度上揭示了该类反应系统的特征主要不是由终结过程的重次决定的。讨论表明:二重非线性终结三分子自催化反应系统的性质由其终结过程决定。     

Oxygen consumption and the evolution of order: negentropy criteria applied to the evolution of ants

Optimization of energy use by evolving organisms, predicted by theoretical extensions of the neo-Darwinian theory, i. contrasted with that of irreversible thermodynamics, which predicts an increase in orderliness and thus an increase in energy consumption per unit of biomass. We compared this index with estimates of social complexity among ant genera and species. Our results show that simple optimization models cannot explain experimental data, and that social complexity correlates differently with negentropy at different levels of analysis. Comparing the genera among Formicidae, workers (not colonies) from genera with highly social species are less negentropic than those of socially primitive ones. At the sub-generic level, social complexity correlated positively with negentropy among species, for major workers inAcromyrmex and for minor workers inAtta. The results illustrate the complexity of thermodynamic criteria in the study of evolution but also hint at their usefulness. In this case, they show that two different evolutionary routes to the complex Attini ant societies may exist.     

非标准拓扑动力系统

本文采用非标准分析方法研究拓扑动力系统。应用Nelson的“内涵集合论”概念给出了拓扑动力系统的非标准表达,为进一步解决该领域中一些公开问题打下基础。     

PROBLEM-ORIENTED INFORMATION RETRIEVAL DECISION SUPPORT SYSTEMS

Decision Support Systems(DSS)are man-machine interaction systems,which support the de-cision-makers to solve the unstructured and semi-structured decisions,this paper advances that thefunction of problem-oriented information retrieval DSS can meet the needs of enterprise's topmanagement effectively in comparison with other information retrieval functions,in accordancewith the features of supporting information for decision.An architecture of this system is presented,which dissolves a problem put forward or recognized by the user into the problem recognized by thecomputer,forming retrieval tactics and searching the data the user needs.Designed and developedaccording to the architecture of this system,a prototype system is introduced,which is CF Econom-ic Environment Information Retrieval DSS.     

堆山工程软土地基Biot固结的非线性有限元分析

本文在文献[1]、[2]给出的软土地基Biot固结的有限元构式及程序基础上,对某大型堆山工程分级加荷施工过程中,软土地基的固结变形,附加应力及超孔隙水压力分布,塑性区的开展等进行了弹性非线性有限元的计算分析,得出了在理论和工程应用上一些有意义的结论。本文的计算方法和结果,可供工程技术人员在类似工程的初步设计时借鉴和参考。有些内容尚可进一步研究和探讨。     

强耦合抛物组解的整体存在性和不存在性

本文利用半群方法证明了一类强耦合非线抛物型方程组初边值问题的整体解存在性；用特征函数方法，给出了整体解不存在的一个充分条件。     

弹性地基上矩形厚板的非线性分析

从三维非线性弹性理论中的应变-位移关系出发,将位移表达为沿板厚变化的一个三角级数。根据三维虚功方程,导出在Winkler地基上,考虑横向剪切影响的矩形厚板的非线性平衡微分方程,得到四边简支矩形厚板在均布、集中及线载荷作用下的精确解。与经典理论、Reissner理论及Voyiadjis的精化理论给出的结果相比较,基本符合。