APS技术在10000MW机组DCS中技术问题的探讨

机组自启停控制系统(APS)是热工自动化技术发展中应用最为广泛的方法之一。本文主要以10000MW超临界机组风烟系统为例,介绍了APS系统在机组改造中的应用,以及探讨了APS系统的组成和APS系统的控制策略设计,并重点探讨了APS技术在10000MW机组DCS改造中的技术问题。     

先进计划与调度(APS)的研究现状和发展趋势

本文介绍了MES和APS的基本概念,并详细介绍了APS系统的体系结构,算法原理和主要特点。综述了在生产计划与调度的理论与方法方面的研究成果,并对我国应用APS的前景进行了分析与展望。     

嵌入ERP的供应链APS系统

高级计划排程系统,是供应链管理中的一种决策优化的计算机系统。APS通过复杂而有效的算法,可快速生成跨越整个供应链的,最优或近似最优计划。本文介绍APS的基础,搭建了供应链APS的基本思路,并提出新一代APS集成系统的模型。APS的很多理论和模型对企业带来的预期利润将不可估量。     

基于APS与ERP集成的新型ERP/APS/MES企业管理系统

文章简要概括了经常被提出的ERP(MRP Ⅱ)在做生产计划时的先天缺陷,并在此基础上提出了基于TOC理念和DBR模型的APS系统与ERP集成的解决方案,提出了APS与ERP集成的潜在问题和可行方案,介绍了基于TOC的APS的关键技术,并根据国内外学者的研究,引入了APS与ERP集成的发展趋势——面向多品种小批量混流制造的精益化改造,以及以APS为核心的新型ERP/APS/MES企业SCM系统。     

APS在工业企业的规划实施及其成功要件

传统工业企业的手工计划排程，存在效率低、准确性低、不协同等行业普遍问题。APS高阶生产计划与排产系统，可以实现供需两端计划的动态串联，通过人工智能决策协同生产，从而有效提高企业的竞争力。然而，目前APS实施成功的验收比例还很低。为此，本文深入探讨了APS的实施规划，并以国内某一知名企业的智能制造示范工厂为例，循序渐进地描述了企业顶层的智能制造蓝图、全链体系规划、APS实际业务流程规划、APS软件功能板块的设置以及APS项目成功实施的相关步骤。本文还根据实际应用验证，提炼了APS实施的成功要件，期望能够引导我国企业提高行业APS导入的成功率。     

咱家的相机过时啦——APS摄影系统简介

APS是一套与现在常用的摄影系统完全不同的系统,其产品包括胶卷、相机及相应的冲洗设备和电子影像处理系统。在’97国际摄影器材展览会上,APS系统的各种实物展品出尽了风头,这预示着新一代摄影系统即将走入我们的生活。 APS胶卷的断面是扁圆形的,体积为普通 135胶卷的60％,底片规格为16.7mm×     

21世纪我国制造业信息化发展新趋势--APS、ERP和MES系统集成研究

从物流管理理念与信息系统的发展入手,分别对基于ERP和供应链管理环境下的计划与执行系统进行研究。通过分析APS、ERP和MES软件的不同特征,采用对比分析的方法,阐明APS、ERP和MES集成的系统是未来我国制造业信息化发展的新趋势。     

基于UML的钢铁企业APS订单计划系统建模

在基于APS的钢铁企业生产计划体系中,订单计划将客户订单转化为生产订单,其内容包括对订单在工序上的分解及交货期的初步确定等。本文从某钢铁企业对订单计划管理的实际需求出发,采用UML建模语言对钢铁企业APS中的订单计划系统进行需求分析,构造了系统的用例图和分析类图,并对订单拆分、库存匹配和产能匹配等典型用例进行了动态建模。本文研究的订单计划系统以客户订单为输入,可以实现订单的拆分、库存匹配和产能匹配,确定订单的交货期,进而合理安排中长期订单计划,达到帮助企业编制高效的生产批量计划和生产调度方案的目的。     

基于APS的钢铁企业生产计划系统设计及实现

本文以高级计划排程系统（APS）理论为基础,对钢铁生产计划系统的总体结构和功能需求进行了分析和界定,设计了基于.NET三层客户端/服务器模式的钢铁企业生产计划系统,实现了生产计划管理中生产工单接收、计划排程、批量计划管理等核心功能。系统以承钢1780热轧卷板生产线为背景进行仿真验证,仿真结果表明,系统能够有效地提高生产计划管理效率,达到了预期的目的。     

APS相机VS变焦傻瓜

APS相机一诞生．就由于其高度灵活、容易使用．而深受业余摄影爱好者的广泛欢迎．甚至一度有传言在不远的将来取代傻瓜相机的地位。近日．国际消费者研究及试验组织(International Consumer Research)在英国进行了一次APS相机和变焦傻瓜相机的对比试验．试验在7款APS相机和8款35毫米变焦傻瓜相机之间进行。透过试验结果．我们不难发现APS的魅力所在。     

An asset protection scheme for banks exposed to troubled loan portfolios

We examine a specific portfolio credit derivative, an Asset Protection Scheme (APS), and its applicability as a discretionary regulatory tool to reduce asymmetric information and help restore the capital base of troubled banks. The APS can be a fair-valued contract with an appropriate structure of incentives. We apply two alternative multivariate structural default risk models: the classical Gaussian Merton model and a model based on Normal Inverse Gaussian processes. Using a data set on annual farm level data from 1996 to 2009, we use the Danish agricultural sector as a case study and price an APS on an agricultural loan portfolio. We compute the economic capital for this loan portfolio with and without an APS. Moreover, we illustrate how model risk in the form of parameter uncertainty is reduced when an APS is attached to the loan portfolio.     

计划排产在卷烟生产中的应用研究

文章针对卷烟厂混合型的卷烟生产,采用车间调度问题的方法,系统分析了卷烟生产中卷包和制丝不同生产环节的特点,得到了它们适用的计划模型以及相适应的算法。根据研究开发的计划排产信息系统,通过在武汉卷烟厂的实际应用表明,该计划排产信息系统具有优化排产、计划冲突避免的优点,取得了较好的应用效果。     

HRD practices in local private sector companies and MNC subsidiaries in Australia, 1996–2009

This study charts human resource development (HRD) practices in locally owned private sector companies (APS) and subsidiaries of overseas-headquartered multinational companies (MNCs) located in Australia from 1996 to 2009.Using data from three iterations of the CRANET Australia survey, the research analyses the degree of difference between APS and MNCs, tests whether HRD practices are increasing in sophistication and if there is convergence or divergence between the two groups. The influence of company size and industry category is also explored as separate independent variables. The results suggest a decreasing overall level of HRD sophistication, that MNC subsidiaries are generally operating at a higher level of sophistication than APS companies and that there is directional, but not final, convergence.     

World Cities and the Uneven Geographies of Financialization: Unveiling Stratification and Hierarchy in the World City Archipelago

This article critically evaluates the network‐centrism of much of contemporary world cities research and queries its capacity to unveil key accumulation processes under financialized globalization. Our object of inquiry is the world city archipelago (WCA), a material yet non‐contiguous space of world city ‘islands', which is (re)produced through the socio‐spatial practices of advanced producer services (APS) firms as they assist in constructing (financial) accumulation strategies for their clients. Scrutinizing the WCA with a singular focus on networks can veil dynamics that lead to internal stratification and hierarchy between world cities and their constitutive outside. Alternatively, these veiled dimensions are better grasped by territorial, scalar and place‐based abstractions. As an example, we unveil WCA space by studying the space of APS practices in three recent cases of Eurobond issuance. By comparing these three instances through an encompassing approach, a bounded geography of a financialized accumulation space is identified, which contains London and other world cities as a necessary space of dependence but also stretches out to various contingent spaces of engagement at the fringes of the WCA network: offshore jurisdictions and places of debt origination. We conclude by making the case for a heightened sensitivity in respect of core–periphery structures that exist between the WCA and its outside, but also within the WCA itself.     

Work values preferences of Generation Y: performance relationship insights in the Australian Public Service

Empirical research to date has provided few insights into the values and performance norms of Generation Y in the workplace. Our exploratory qualitative study treats work values preferences as inferred performance behavior in an attempt to shed light on the Generation Y performance relationship in the Australian Public Service (APS). Adopting a person–organization values fit framework, our study draws attention to how Generation Y employees (N = 60) and older managers (N = 20) shape key aspects of performance around their own different values judgments of APS operational procedures (i.e. ‘unnecessary bureaucracy’ vs. ‘legitimate governance’) and merit-based promotion (i.e. ‘it’s just wasting people’s time’ vs. ‘younger employees expect too much, too soon’). Findings suggest areas of work supportive of an efficient Generation Y performance relationship (i.e. Generation Ys’ work ethic), as well as inefficient areas of performance where managers and Generation Y hold different work values preferences (i.e. unrealistic expectations; underperforming colleagues; decision-making processes). Performance implications associated with how managers may respond to the work values preferences of Generation Y are discussed.     

Gender analysis of entrepreneurial intentions as a function of economic development across three groups of countries

The aim of this paper is to analyze the gender differences in entrepreneurial intentions by studying a range of socioeconomic and psychosocial factors. Furthermore, we aim at analyzing these differences in three groups of countries depending on the stage of economic development of each country according to the Global Competitiveness Report. Using a logistic regression analysis and data from the 2008 APS (Adult Population Survey) database which is part of the Project GEM (Global Entrepreneurship Monitor), results show the existence of gender differences in entrepreneurial intentions. The model proposed in the study has decreasing explanatory power as the degree of economic development increases, and is also more conclusive for men than women. An important methodological innovation we implemented in the current study is the use of the variable gender as a dependent variable rather than a variable of a socio demographic nature.     

区域物流中心城市物流系统规划研究＊--以绵阳市涪城区物流系统概念规划为例

在对城市物流系统规划相关概念、意义及难点分析的基础上,针对我国区域物流中心城市物流系统规划的实际需求,理论上,对基于“软系统”方法论的城市现代物流系统规划方法进行深入研究;实践上,将该方法应用到绵阳市涪城区物流系统概念规划过程中。一方面,为“软系统”方法论在城市物流系统规划中的应用积累经验,另一方面,解决区域物流中心城市-绵阳市涪城区物流系统概念规划中的实际问题。