一类四阶线性双曲型方程的边值

考虑了一类四阶线性双曲型方程以特征线为数据支柱的边值问题，在支柱上给出了函数值或导数值，用迭代法讨论了问题的正规解或古典解。     

3～6岁幼儿手长、中指长与身高关系的研究

本文报告了湘西吉首地区1171名3～6岁幼儿(男649,女522)的身高、手长和中指长的均值,手长及中指长占有身高的百分数,身高与手长及中指长的比值,身高手长指数和身高中指长指数;对手长及中指长与身高之间进行了相关和回归分析,分别提出了由手长、中指长推算身高的归方程.     

一个Markov转移概率函数的确定

利用柯尔莫哥洛夫向前方程计算了电话呼唤次数的随机过程的转移概率函数。     

高阶非线性退化拋物型方程的初边值问题

本文讨论了高阶非线性退化方程■都为非负常数)的两类初边值问题全局解的存在性(Blow—up)。     

一类变系数非线性Schrödinger 方程的精确解析解

对一类变系数非线性Schrödinger 方程的解的形式作了适当假设，直接计算，获得了一类变系数非线性Schrödinger 方程的精确解析解。     

非线性自治系统不稳定性的一个判断方法

给出非线性自治系统不稳定性的一个简便的判据：从对应的特征方程的系数符号不尽相同，即可系统的零解是不稳定的。     

Mindlin层合圆柱壳理论的Hamiltonian结构与辛解析解

通过引进状态变量及其对偶变量。建立Ｍｉｎｄｌｉｎ层合圆柱壳的Ｈａｍｉｌｔｏｎ正则方程．在辛几何数学框架下，采用共轭辛正交归一关系给出各种复杂边界条件下的精确解．     

Liquid-Liquid Equilibrium for 1-Butanol-Water-KF and 1-Butanol-Water-K2CO3 Systems

KF or K2CO3 was added into the 1-butanol-water system and two phases were formed： water-rich phase （water phase） and 1-butanol-rich phase （1-butanol phase）. The liquid liquid equilibrium （LLE） data for 1-butanol-water-KF and 1-butanol-water-K2CO3 systems were measured at 25℃ and showed that 1-butanol phase contained negligible salt and water phase contained negligible 1-butanol when the concentrations of KF and K2CO3 in the water phase were equal to or higher than 27.11% and 31.68% , respectively. Thus water could be separated efficiently from 1-butanol-water by adding KF or K2CO3 into the system. A theoretical calculation of LLE data was calculated by using the Pitzer theory to get water activity in the water phase, and by the models, such as the Wilson, NRTL or the UNIQUAC for the 1-butanol phase. For 1-hutanol-water-KF system, the experimental data were found in good agreement with the calculated results by using Pitzer theory and Wilson equa tion, while for 1-butanol-water-K2CO3 system, the experimental data were found in good agreement with the calculated results by using Pitzer theory and UNIQUAC eauation.     

伸缩方程Lpc解的讨论

研究一般扩张矩阵伸缩方程L^pc解的性质，相同分形中的选代函数系统构造tile和tiling性质，克服了通用方法中的不足，得到了这类方程存在紧支撑解的充要条件，从而推广了有关的结果．     

Banach空间积-微分方程整体解的存在性

利用上下解的单调迭代方法,采用适当的迭代程序,在较弱的条件下,获得了Banach空间积-微分方程初值问题整体解的存在性结果.