基于扩展Petri网模型的BPR过程的实现

BPR是对企业的业务流程进行根本性再思考和彻底性再设计,以取得业绩的显著提升的有效方法.文章在分析工作流程模型基本要素的基础上提出了一种适用于BPR的基于Petri网的模型--工作流网,该模型增强了对企业核心流程活动的性能的描述和分析能力.最后文章通过一个业务流程的实例实现了基于扩展Petri网的BPR过程,并讨论和分析了该业务流程重构过程的正确性.     

供应链企业中基于BPR的定制ERP解决方案研究

本文研究供应链企业中基于BPR的定制ERP解决方案。首先通过对现代制造企业实施供应链管理的思索 ,分析了ERP和BPR在供应链管理中发挥的重要作用 ;并以一个典型的制造企业为背景 ,提出了一个基于BPR的定制ERP解决方案 ,为企业进一步实施供应链管理以及电子商务奠定了良好的基础     

BPR 对铸造企业组织重构的重要性

综述了BPR(业务流程再造)的涵义、内容及研究发展概况.在此基础上论述了我国铸造企业实施铸造BPR的必要性和重要性,并强调,进行BPR必须将其与铸造专业技术、IT技术和先进制造技术紧密结合起来.     

ERP发展趋势的探讨

BPR分析了目前ERP系统的缺陷,结合当前管理思想与IT技术的发展情况,对BPR下ERP的发展进行了较为详细的阐述,提出了未来ERP系统发展的方向.     

供应链企业中基于BPR的定制EPR解决方案研究

本文研究供应企业中基于BPR的定制EPR解决方案，首先通过对现代制造企业实施供应链管理的思索，分析了ERP和BPR在供应链管理中发挥的重要作用，并以一个典型的制造企业为背景，提出了一个基于BPR的定制EPR解决方案，为企业进一步实施供应链管理以及电子商务奠定了良好的基础。     

铸造企业ERP系统的流程柔性化方法及应用研究

随着铸造企业市场需求的不断变化,ERP系统对业务流程重组的响应速度越来越慢。研究发现其主要原因是由于ERP系统的流程柔性不足,具体表现为流程动态重组能力不足、流程分支处理能力不足。为此,笔者基于参数化配置和组件技术,提出改善ERP系统流程柔性的两项技术——流程指导中心定义技术和流程RSS(Really Simple Syndication简易信息聚合)任务定义技术。将这两项技术应用到某铸造企业后,可在ERP系统中实现流程的快速动态调整和灵活分支处理,提高了ERP系统对业务流程需求的动态响应能力,改善了ERP系统的流程柔性。本文提出的流程柔性方法对ERP系统柔性的研究具有参考价值。     

企业推进ERP建设的四方面问题

企业在推进ERP建设中,不可忽视管理观念、运行机制、业务流程和管理基础这4个方面,以机械制造企业为例,提出对上述4个方面进行更新、转换、调整和整顿的具体作法.     

基于SOA的ERP系统架构的研究与应用

针对当前ERP(Enterprise Resource Planning,企业资源计划)系统开发中企业之间集成相对薄弱,不能灵活地适应企业业务流程和系统的快速变化等不足,从软件体系结构出发,研究了当前企业应用集成实现技术的局限性,分析了当前新一代的架构思想SOA(Service Oriented Architecture,面向服务架构)的特点和实现技术,提出了面向服务架构的ERP系统体系结构,并对其实现技术进行了进一步的研究.     

让流程成为效益

无论如何．“流程”的概念已经渗透到管理的每一个环节。不管是有形的还是无形的．有意的还是无意的．“业务流程”和“BPR”已经对企业的效益产生很大的影响。     

实施ERP的企业内部控制

ERP环境下，企业内部控制的运行环境发生了明显的变化，这给企业内部控制带来了很多新的问题。作者结合在工作中的实际经验，针对实施ERP后，公司在销售、供应、生产等业务流程层面的内部控制、系统维护和监控等重要环节及内控实施过程中应注意的问题进行了探讨。     

基于DEA的产品设计流程分析及模型选择

产品设计流程是机械制造业的核心流程,在整个BPR系统中起着举足轻重的作用,而对该流程实施再造工程的关键和核心在于对原流程进行科学分析,进而选择适宜的新流程模型.文章以数据包络分析的C2R模型为基础,详细论述了产品设计流程的分析方法,介绍了适宜于机械产品设计的主要流程模型,从定量和定性的角度对此问题进行了系统的分析和探讨,可作为制造业产品设计流程再造工程中的技术和工具,供工程技术及相关人员参考.     

EFFECT OF MILLING INTENSITY ON STRUCTURAL CHANGES OF MIXED Al－Fe－Ni POWDERS IN MECHANICAL ALLOYING PROCESS

ＥＦＦＥＣＴＯＦＭＩＬＬＩＮＧＩＮＴＥＮＳＩＴＹＯＮＳＴＲＵＣＴＵＲＡＬＣＨＡＮＧＥＳＯＦＭＩＸＥＤＡｌ－Ｆｅ－ＮｉＰＯＷＤＥＲＳＩＮＭＥＣＨＡＮＩＣＡＬＡＬＬＯＹＩＮＧＰＲＯＣＥＳＳ￥ＬｉｕＺｕｙａｎ；ＬｉａｎｇＧｕｏｘｉａｎ；ＷａｎｇＥｒｄｅ（Ｓ...     

一种面向企业经营过程的工作流模型

作为支持企业经营过程重组、经营过程自动化的一种手段,工作流技术得到越来越广泛的应用。而作为工作流管理系统理论研究和实际应用基础的工作流模型,成为工作流技术的主要研究方向之一。文章针对目前工作流过程模型在描述能力、柔性以及过程重用方面的不足,提出一种基于UML2.0活动图,具有可扩展机制,以简单、直观的图形化表示方法描述企业业务流程的工作流建模方法,同时,基于J2EE平台,开发了支持该建模方法的建模工具,并使用该工具建立了威海海都食品集团的典型业务流程实例。     

Investigation of Pre-milling Effect on Synthesis of Ti5Si3 Prepared by MASHS, SHS, and MA

Ti₅Si₃ was fabricated by self-propagating high-temperature synthesis (SHS), mechanical-activated SHS (MASHS), and mechanical alloying with the aim of investigating the effect of milling energy on final product. For MASHS process, Ti and Si as starting materials were milled by high energy ball milling, with ball-to-powder weight ratio (BPR) of 10:1, for different times (1, 3, and 6 h), then pressed to form pellets. Green compacts were placed in a tube furnace preheated to three different temperatures of 1000, 900, and 800 °C with argon atmosphere for the synthesis. The milled and synthesized powders were characterized by means of XRD and SEM. The results showed that Ti₅Si₃ was not formed during milling up to 3 h, after that a trace of Ti₅Si₃ peaks can be detected from XRD pattern. The increase in milling time prior the combustion reaction caused a decrease in the crystallite size of the final product and ignition temperature of the reactant. The average crystallite sizes of Ti₅Si₃ after activation of 1, 3, and 6 h were calculated 87, 55, and 48 nm, respectively. Higher milling energy in BPR 15:1, led to the full reaction and formation of nanostructured Ti₅Si₃ in milling media by mechanical alloying method, even after 1 h. The crystallite sizes of Ti₅Si₃ after milling of powders from 1, 3, and 6 h, were calculated 70, 26, and 14 nm, respectively. For the SHS process Ti and Si were mixed in the methanol. The combustion reactions were carried out in the tubular furnace and reactor. SEM results showed that Products were formed via MASHS process have more uniformity of microstructure compared to those synthesized via SHS process.     

Determination of Trace Amount of Yttrium with Bromopyrogallol Red by solid-phase Spectrophotometry

SolidPhase sPectroPhOtometry (SPS) was in-troduced in 1976 [l1. lt had mny theortant advatages, such as higher sensitlyity bcher selec-tivity and raPid determination procedur. Niob-iam l2], Minum and berylldri [3] had beensuccessfully determined recentiy by this meth-od. Wth BPR the molybdenum [4] and bismuth[5] were also determined by SPS. In thes paPerBPR was used as the chromogenic reapeni toforIn a 1. 1 blue cOmPlex with yttrinIn (III)Which was easily and strongly sorbed and con…     

分销系统中的长鞭效应及弱化

在阐明“长鞭效应”的概念及其在分销系统中成因的基础上，结合企业信息化工程的实施，基于BPR原理提出了功能型的分销系统模型。将分销系统中的中间批发商的订单处理、库存管理功能剥离，强化其市场开拓功能。并利用物流配送中心降低物流过程中的延迟，利用信息系统弱化信息在传递过程中的延迟、曲解、放大，有效地弱化了分销系统中存在的“长鞭效应”。     

Effect of C and milling parameters on the synthesis of WC powders by mechanical alloying

In the current study, the amount of carbon and the effects of milling parameters in production of tungsten-carbide (WC) powder were evaluated. Mechanical alloying (MA) of elemental W and C powders at different carbon-rich and carbon-deficient compositions was studied. XRD results showed that the higher the carbon content the longer the milling period for the formation of WC powder. We also report on the effect of milling parameters on the phase formation. In stoichiometric composition, WC was synthesized faster than in compositions with higher carbon amount. Furthermore, W₂C phase was observed in compositions with higher carbon content milled at low speed and ball-to-powder ratio (BPR), as well as in carbon-deficient composition milled for shorter period. The ab initio calculations were performed in attempt to explain the destabilization of W₂C on further milling.     

Nanophase intermetallic FeAl obtained by sintering after mechanical alloying

The preparation of bulk nanophase materials from nanocrystalline powders has been carried out by the application of sintering at high pressure. Fe–50 at.%Al system has been prepared by mechanical alloying for different milling periods from 1 to 50 h, using vials and balls of stainless steel and a ball-to-powder weight ratio (BPR) of 8:1 in a SPEX 8000 mill. Sintering of the 5 and 50 h milled powders was performed under high uniaxial pressure at 700 °C. The characterization of powders from each interval of milling was performed by X-ray diffraction, Mössbauer spectroscopy, scanning and transmission electron microscopy. After 5 h of milling formation of a nanocrystalline α-Fe(Al) solid solution that remains stable up to 50 h occurs. The grain size decreases to 7 nm after 50 h of milling. The sintering of the milled powders resulted in a nanophase-ordered FeAl alloys with a grain size of 16 nm. Grain growth during sintering was very small due to the effect of the high pressure applied.