铁谱磨粒数字特征分析系统

应用图像处理技术建立了铁谱磨粒数字特征分析系统，有效地解决了大量提取磨损状态信息与减少主观因素影响的矛盾。系统分为基本操作、图像预处理和特征参数３个模块。文中对系统的主要功能及算法作了介绍并给出了计算实例。     

为TP801单板机增加测频功能

电信号的频率是主要参数之一，对它的测量很重要，方法也很多。目前绝大多数采用数字式硬件电路来完成。但由于２８０—ＣＰＵ微处理器运算速度快，控制能力强，据测频原理，可采用软件秒脉冲和软硬件计数器来实现对频率的测量，为ＴＰ８０１单板机增加了测量功能，可一机多用。     

浅议物理实验教学环节改革

为进一步提高大学物理实验的教学质量，本文就实验课的预习、操作、实验报告的撰写及考核方法进行了探讨。     

BP网络及其应用

基函数选取和系数求解是函数逼近中的两个关键问题,目前广泛应用的回归分析或其它映射方法均有局限性。采用人工神经网络中的BP网较好地解决了这两个问题,对理论和实际的数据进行了比较与验证,结果表明.BP网络有助于提高数据处理的可靠性与预测的精度.     

Global Optimal Image Reconstruction from Blurred Noisy Data by a Bayesian Approach

In this paper, a procedure is presented which allows the optimal reconstruction of images from blurred noisy data. The procedure relies on a general Bayesian approach, which makes proper use of all the available information. Special attention is devoted to the informative content of the edges; thus, a preprocessing phase is included, with the aim of estimating the jump sizes in the gray level. The optimization phase follows; existence and uniqueness of the solution is secured. The procedure is tested against simple simulated data and real data.     

回转式电火花展成加工的计算机仿真

介绍了回转式电火花展成加工的原理及特点，并对该加工方法的成形运动进行较深入的分析，给出了在Delphi6环境中实现加工过程的计算机仿真。     

中间件技术在电信综合业务管理系统中的应用

简要介绍电信综合业务计算机管理系统TSIS的一些情况，着重讨论了用中间件技术开发分布式事务处理系统的方法，并提供了用中间件实现分布式事务处理系统的关键技术。     

The response of microstructure to processing in a series of poly(siloxaneimide) copolymers

Poly(siloxaneimide) (PSI) segmented copolymers exhibit organized microdomains if the blocks are sufficiently incompatible. As with neat diblock and triblock copolymers, the processing route employed to prepare films of PSI materials is expected to influence the dimensions and/or morphology of the resultant microstructure. In this work, small-angle neutron scattering (SANS) is utilized to characterize the disordered microstructure found in films of a series of PSI copolymers which are subjected to solvent casting and various thermal treatments. Microstructural dimensions such as the periodicity and correlation length are deduced from the Teubner-Strey (TS) model for disordered microemulsions. The scattering intensity of each copolymer up to q = 5.0 nm^?1, where q is the scattering vector, is found to scale as q^?2.8+?0.1. Results indicate that processing the materials as cast films or as melt-pressed films allowed to cool slowly has a small, but discernible, effect on microstructural characteristics. SANS profiles of films quenched from elevated temperatures reveal a clear transition in microdomain periodicity, which correlates well with the glass transition temperature of the imide microphase in these and other materials of similar chemical structure. © 1993 John Wiley & Sons, Inc.     

Novel All Digital Scheme for Open Loop Fiber Optic Gyroscopes

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全息散斑条纹的提取及图像处理

介绍了一种新的全息散斑条纹的提取方法.理论和实验表明:对全息散斑底片逐点再现时,两伴生亮斑条纹是全息散斑底片一级衍射光的杨氏干涉条纹,与中央的杨氏条纹是一致的,有较高的条纹对比度且没有背景光晕的影响.利用计算机数字图像处理技术对伴生散斑条纹进行处理,定量测试了受静载物体的面内位移.