悬垂美感与织物结构特性的关系讨论

通过多元逐步回归，讨论了织物悬垂美感指标与织物结构特性指标间的内在联系，揭示了二者密切相关的特性．     

非线性铁磁谐振电路的分析

采用综合分析法集中讨论了铁磁谐振电路的渐近解、幅-频特性曲线、跳跃、滞后等一系列问题,所得结果与各单一方法所得的结果相同.     

线载荷拉伸作用下不可压缩橡胶类楔体

利用不可压缩材料应变能函数，分析了受集中力拉伸作用下不可压缩橡胶类楔体尖端附近的应力分布及形变行为．给出了楔体尖端应力场的渐近解，当楔体角度为π时，即为半空间受线集中力拉伸的典型问题解．     

Nonlinear fusion filters based on prediction and smoothing

To attenuate white noise, nonstationary noise and impulse noise are important for signal processing. In this letter, we present nonlinear fusion filters (NFF) based on prediction and smoothing. By means of least square fitting of a polynomial, we define and give the operators of left prediction and right prediction, left smoothing and right smoothing, central smoothing and cross-validation smoothing. In simulated experiments, it is shown that the present method is an effective one.     

Catastrophe mechanism and classification of discontinuity behavior in thermal science (II)

The catastrophe mechanisms of thermal performance characteristics of the firebox gas combustion system were analyzed from the viewpoint of catastrophe theory. The mathematical models of cusp catastrophe were established. The relationship between the thermal performance characteristics and the changing of system control variables was studied. The cusp catastrophe mechanisms of typical performance characteristics, such as kicking and lagging, and those of transition from quenching to igniting were explained. It was illustrated that discontinuity behavior of thermal systems with an “S” motion feature curve and lagging feature may be equivalently classified according to the topology of cusp catastrophe, influenced by two groups of independent control variables.     

函件业务量的多元回归预测方法

函件业务是邮政的核心和基础业务，函件业务的预测对制定邮政企业发展规划具有十分重要的意义。首先介绍了影响函件业务量的主要因素，然后给出了建立函件业务量多元回归模型的方法，并用近年来的有关数据建立了函件业务量实际模型，对近三年的函件业务量进行了预测。     

非线性介质对SU(2)非阿贝尔场的响应

将夸克介质视为非简谐振子模型，讨论了它对SU（2）非阿贝尔场的响应，采用微扰迭代法解出了方程的一，二，三级近似解，初步得出了这种响应的一些非线性特征。     

七层KP_1型烧结页岩粉煤灰多孔砖房屋非线性地震响应分析

根据墙片抗震试验结果，运用非线性时程分析程序对一栋七层的烧结页岩粉煤灰多孔砖房屋进行了计算．计算结果表明该种砌体房屋具有良好的抗震性能．     

A MULTISTEP CHARACTERISTIC FINITE DIFFERENCE METHOD FOR TWO-DIMENSIONAL NONLINEAR CONVECTION-DIFFUSION PROBLEMS

1.IntroductionItiswellknowthattheconvection-dictionproblemsareakindofveryimportalprob-lems,particularlylthenonlinearconvection-diffusionproblexns.Inthepaper[1],asinglestepcharacteristicflutedmerencemethodisgivenforsolvingtwcadimensionalnonlinearconvection-dilhaionproblemswiththeconvectivecoefficientsdominating.HereweshallgiveamultistepcharactersticamrencemethodbasedonthelinearandquadraticinterpolationsforsolvingtwcadAnensionalnonlinearconvection-~ionproblemsinordertoincreasetheaccuracyofapprot…     

具正负系数的二阶非线性中立型时滞差分方程的非振动准则

近年来,随着科学技术的发展,差分方程理论不仅在物理学、航天卫星等领域中有重要的应用,而且在经济学、生物学、控制理论等自然科学和社会科学领域也成为不可缺少的数学工具.而中立型差分方程的振动性与非振动性理论作为中立型差分方程定性理论中的重要内容,更是受到了人们的普遍关注.本文研究了一类具有正负系数的二阶非线性中立型差分方程正解的存在性,利用Banach空间的不动点原理,结合一些分析技巧,得到了这类方程存在有界的最终正解的充分条件,推广并改进了现有文献中的结论.同时给出例子验证其有效性.