双-(0，0′-二正丁基二硫代磷酸酯)合镍(Ⅱ)与氮碱加合反应的研究

本文报道了 Ni[(C_4H_9O)_2PS_2]_2与氮碱的加合反应,用光谱法测定了苯溶液中加合反应的平衡常数,在31℃时吡啶加合物的 K_1=33.1,β_2=7.94×10~3,联吡啶加合物的 K=2.51×10~6,用热重分析和 NMR 方法研究了加合物的热分解性质、磁性质和自旋密度分布.当 d~8低自旋的标题化合物与吡啶和正丁胺反应生成 d~8高自旋的加合物时,观察到了顺磁效应,未成对自旋密度离域到吡啶环和正丁胺上,导致各类质子共振向低场位移.未成对电子自旋密度通过σ键体系从 Ni(Ⅱ)离域到配体上.     

沙漠化影响因素研究

近年来,沙漠化问题日益受到关注,虽然有关沙尘运动和沙纹形成方面的研究较多,也取得了显著的成果,但是有关沙漠扩散过程定量描述的研究相对较少。特别是对沙漠面积较大,气候环境较复杂的地区进行研究带来许多困难。本文尝试从沙漠一绿洲之间的作用关系入手,分析交错带沙漠化的特征,对沙漠化影响因素进行了研究,建立相应的微分模型,并给出了平衡点的稳定性分析。     

关于一类有理递归序列的渐近性质

探讨了一个非线性差分方程的解的性态，指出该方程的一个系数与方程的解的全局渐进稳定性、单调解的存在性等的关系。     

液压机动梁同步节流平衡系统研究

本文给出了650吨液压机新型同步节流平衡系统的结构组成及工作原理,分析了动梁的动力状态,给出了动梁的静、动特性参数及这些参数的确定方法,并得出了各环节的特性方程及系统的信号功能图.文中对系统的关键技术一同步节流阀的结构形式及静特性进行了分析和实验研究.     

25℃时水溶液中[Bi(SCN)n]~(3-n)配合物的稳定性和摩尔消光系数

本文用平衡移动法在25℃水溶液中研究了硫氰酸铋(Ⅲ)配合物的组成。用改善了的guuMHpcun立方法测定了硫氰酸铋(Ⅲ)各级配合物的稳定常数和摩尔消光系数及其之间的关系。并用文献[6]的方法计算了溶液中各级配合物的组成百分数和配位体浓度的关系,考虑了各级配离子的百分组成的变化对摩尔消光系数的贡献。     

Feedback forecasting games: An overview

The range and rationales for forecasting schemes involving feedback are surveyed. Classic Delphi schemes involve an iterated exchange of information between a small group of experts in the pursuit of efficiencies arising from the ‘collective mind’. In other applications the event or state to be forecast may itself depend upon the forecast, and feedback forecasting schemes can be derived to allow for such reflexivity. Most situations of informational feedback are at least implicitly informational or predictive games, and a recognition of this character may help in understanding the possible or likely outcomes, including their social desirability. Various informational transfer devices such as real time surveys may speed up the process of feedback.     

两大部类再生产数学模型研究

本文根据马克思的社会再生产理论建立了由物质平衡方程和价值平衡方程组成的数学模型,文中对该模型的性质进行了初步分析。     

Ergodic Theory, Interpretations of Probability and the Foundations of Statistical Mechanics

The traditional use of ergodic theory in the foundations of equilibrium statistical mechanics is that it provides a link between thermodynamic observables and microcanonical probabilities. First of all, the ergodic theorem demonstrates the equality of microcanonical phase averages and infinite time averages (albeit for a special class of systems, and up to a measure zero set of exceptions). Secondly, one argues that actual measurements of thermodynamic quantities yield time averaged quantities, since measurements take a long time. The combination of these two points is held to be an explanation why calculating microcanonical phase averages is a successful algorithm for predicting the values of thermodynamic observables. It is also well known that this account is problematic.This survey intends to show that ergodic theory nevertheless may have important roles to play, and it explores three other uses of ergodic theory. Particular attention is paid, firstly, to the relevance of specific interpretations of probability, and secondly, to the way in which the concern with systems in thermal equilibrium is translated into probabilistic language. With respect to the latter point, it is argued that equilibrium should not be represented as a stationary probability distribution as is standardly done; instead, a weaker definition is presented.     

一类差分方程正解的渐近性

研究描述微生物代谢过程中虫口变化规律垢一类差分方程,获得了保证其每一正解趋于正平衡点的一族充分条件,所得结果改进了文献（Math Anal Appl,1998,225(2):486-500.）中相关的结论。     

一类具有比例依赖型捕食者-食饵扩散模型的定性分析

应用线性化方法、上下解方法和迭代方法证明了具有比例依赖型的捕食者-食饵扩散模型正平衡点的全局渐近稳定性.