工作流管理系统技术现状及其发展趋势

随着计算机技术的发展和应用,工作流管理技术势必成为企业集成业务流程、节约运作成本的重要环节,工作流技术正经历迅猛发展,新型的工作流管理系统不断出现,有必要对工作流技术的发展现状及其趋势做一个总结,本文主旨也正在于此。     

图像匹配技术在套印误差自动检测中的应用

准确检测套印偏差是印刷机自动套印系统中最为关键的技术;针对印刷色标图案的特点,提出了一种新的基于图像匹配的套印误差检测方法,通过相关匹配处理获取各单色色标的位置,并巧妙利用色标圆线的直径确定了系统的标称分辨率,进而计算出各色组问纵向和横向的套印误差;文中详细给出了算法原理和实验结果;相对于经典的边缘检测方法,图像匹配技术充分利用了色标图案的整体信息;实验结果表明,该方法对像素灰度的变化和系统噪声具有鲁棒性,检测精度高。     

全自动酶免工作站计算机控制系统设计

介绍了酶免工作站软件控制部分的分析和设计.按软件工程的设计思想,归纳出系统的对象,给出系统实现单文档多视和控制类的详细设计.并将一种改进的自适应遗传算法应用于系统执行效率的优化.此开发系统已投入实际试验,从实际使用的效果看,试验执行效率提高了69.9%,血样检测的准确率也达到了99.6%以上,因此,每台酶免仪每天可以多检测120个左右的血样,如果按照现在医院血液检测的指导价,每台酶免仪每年可为医院多创造150万人民币左右的利润.     

基于Web的协同设计环境下产品数据管理系统模型研究

首先分析了基于Ｗeb的产品数据管理系统功能需求,结合网络应用特点及面向对象技术,提出一个以模块为核心来组织、管理,发布信息的分布式产品数据管理系统模型－－ＤＰＤＭ（Ｄistributed Product Data Management）,并分析了其体系结构,其目的是为设计者提供一个支持协同设计的开放式开发环境,以提高产品质量,缩短开发时间。     

DRS航管雷达模拟机自动机长语音技术研究

随着DRS航管雷达模拟机广泛应用于民航管制训练中,研制采用语音识别和合成技术的自动机长势在必行。就语音识别技术在DRS航管雷达模拟机中的应用进行了研究和试验,并给出了基于IBM Voice Type的具体实现。实践证明,这一方案是可行的,而且效果比较理想。     

一种低压低功耗共源共栅带隙基准电压源的实现

提出了一种低压低功耗的带隙基准电压源电路,设计基于0.5μm2P3M BiCMOS Process,并使用了低压共源共栅电流镜结构减少了对电源电压的依赖,消除了精度与余度之间的矛盾,并用HL50S-S3.1S.lib库文件用HSPICE进行了仿真,其电源抑制比PSRR大约为-78.9dB。     

A comparative study on sufficient conditions for Takagi-Sugenofuzzy systems as universal approximators

Universal approximation is the basis of theoretical research and practical applications of fuzzy systems. Studies on the universal approximation capability of fuzzy systems have achieved great progress in recent years. In this paper, linear Takagi-Sugeno (TS) fuzzy systems that use linear functions of input variables as rule consequent and their special case, named simplified fuzzy systems that use fuzzy singletons as rule consequent, are investigated. On condition that overlapped fuzzy sets are employed, new sufficient conditions for simplified fuzzy systems and linear TS fuzzy systems as universal approximators are given, respectively. Then, a comparative study on existing sufficient conditions is carried out with numeric examples     

太湖流域水灾害应急对策研究

太湖流域是我国经济社会高度发达的地区之一,发生水灾害时往往会造成重大经济损失。对发生各类水灾害时的应急对策展开研究总结,以减轻水灾害,避免人员伤亡,保障经济社会可持续健康稳定发展,并通过分析典型案例的实际应对过程,为今后开展类似工作提供参考。     

Optimization of oval–round pass design using genetic algorithm

The primary purpose of this paper is to propose a computer aided optimal design system to support a generalized oval–round pass design, which is widely used as both intermediate and final passes in the process of rod rolling. This system, which is based on a hybrid model and the genetic algorithm, is developed to improve the efficiency, to reduce the manufacturing errors, as well as to extend the useful life of rolls through uniform wear design. Generalized parametric equations are established for geometrical modeling, graphic plotting of oval–round passes, as well as calculation of the cross section area, contact area and the lengths of contact arcs along the cross section of round groove in the MATLAB programming environment. Moreover, these equations can also realize the parametric transformation between roll profile and mathematical models for the oval–round pass design and optimization. The genetic algorithm is employed for the optimal design of oval–round passes in this paper. The objective functions are formulated for minimization of power consumption in the rolling process, variances between ideal dimensions and design dimensions, as well as variances between the lengths of contact arcs. To reduce the complexity and computational burden of the system, some reliable empirical formulas for the calculations of contact area and contact arc length are applied. Finally, the proposed approach is applied to an oval–round pass design. Through simulation and comparison of results against experimental data acquired from literature, it is found that this system is reliable, effective and easier to use.