模态综合法在采煤机械中的应用

根据一种改进的模态综合法，本文简化了其子结构刚度矩阵和质量矩阵，并编制了微机程序，用这一方法分析了３００型采煤机摇臂壳体的动态特性。     

复杂动力系统初探

探讨传统动力系统与复杂系统之间的关系，并指出某些系统确实具有复杂系统的明显特征，首先研究切换系统，指出这种系统具有1＋1≠2的的特征，并进一步研究这种系统的一些特点，其次，考虑一类动力系统的演化模型，指出这种系统改变着自己的环境和形态，但某些性质不变，将其称为遗传性质，这是我们用严格数学理论与动力系统理论研究复杂系统的尝试。     

多跨转子不平衡载荷在线识别的一种新方法

本文基于转子一承系统的子结构模态分析及参数识别的方法，提出了一种旋转机械多跨转子不平衡载荷在线识别的理论方法。该方法为大型旋转机械转子失衡的在线监测提供了依据，并可用于转子系统的无试重动平衡。     

Genetic determinants of individual differences in avoidance learning: Behavioral and endocrine characteristics

Bidirectional genetic selection for good and poor active avoidance learning in a shuttle box has been carried out in three independent laboratories using remarkably similar discrete-trial training procedures. The resulting strains are known as the Roman High and Low Avoidance (RHA and RLA), the Syracuse High and Low Avoidance (SHA and SLA) and the Australian High and Low Avoidance (AHA and ALA) strains, respectively. An additional unidirectionally selected strain, known as the Tokai High Avoider (THA) strain was developed in Japan using a free-operant Sidman avoidance procedure in a Skinner box. This paper reviews the selection of the Syracuse strains, enumerates the various behavioral and endocrine characteristics of the strains, and compares them to the other similarly selected strains. The behavioral work suggests that genetic selection from diverse breeding stocks has resulted in common characteristics that differentiate the strains in the emotional, not learning, domain. The endocrine data, however, are somewhat at odds. The Syracuse strains differentiate one way with respect to endocrine function, and the Roman strains differentiate in the opposite way. We suggest, therefore, that the endocrine correlates are not tightly linked to the avoidance genotype. Genetic analysis of all of the selected strains for both the avoidance phenotype and the endocrine correlates will be needed to test this hypothesis.Preparation of this paper was supported by research grant MH-39230-3 from the National Institute of Mental Health.     

液压支架用大流量安全阀动态设计

本文以特定的性能要求为准则,拟定了较为合理的大流量安全阀动态系统结构.在此基础上,利用功率键合图方法建立了阀系统动态数学模型,并以控制论中的ITAE误差指标作为目标函数,对阀系统动态参数进行了优化。     

沉井地压——一种特殊表土地压的探讨

分析探讨沉井在表土中下沉时所引起的受力现象及其相关的论点，迸发现沉井在正常下沉过程中，不仅仅会受到竖井表土地压的作用，更主要是沉井的前端（刃脚）受到被动土压力的作用。     

遵毕高速公路采空区勘察治理技术研究

研究遵毕高速公路建设过程中遇到的各种煤矿采空区问题,应用注浆法、开挖回填方法、强夯法、桥跨方法等措施治理采空区,为贵州山区高速公路采空区治理提供了经验。     

大学英语课程动态评估探讨

大学英语教学涉及了方方面面的因素，因此大学英语课程的评价体系应该是多种评价手段有机结合、多方参与的动态性评估。当前主流的终结性评估具有很大的局限性。为了对大学英语课程进行更为客观的评价和更大限度的调动学生及教师的积极性，大学英语课程动态评估势在必行。动态性评估在强化学生的学习动机、进一步开发他们的认知、培养他们自主学习能力中起着重要作用。文章讨论我国大学英语课程动态性评估的必要性和可行性，并提出了大学英语课程评价新模式的构想。     

MRAS在油膜轴承动态特性辨识中的应用

将模型参考自适应系统（ＭＫＡＳ）用于辨识轴承的８个线性化系数。每个轴承座在水平和垂直方向均简化为质量－弹簧－阻尼系统。在多跨转子系统的在线辨识和诊断中，这种方法有其独特的优点。此方法的可行性经计算机模拟和实验得到证明。     

ROBUST H∞ CONTROL FOR UNCERTAIN NONLINEAR SYSTEMS

This paper studies the robust H∞ disturbance attenuation with internal stability for uncertain nonlinear control systems. By adding one power integrator technique, this paper designs a explicit smooth robust dynamic feedback law while rejecting the disturbance to any specified degree of accuracy. Further, the example and simulation results show the effectiveness of the proposed schemes.