“辽宁第二次创业”的先行官——东电一公司

<正> 东电一公司8000多职工在辽宁省第二次创业的进程中,发扬“艰苦奋斗、敢打硬仗、开拓进取、信誉至上”的企业精神,优质高速的建设着辽宁境内的一批电力、冶金工程。至5月下旬,东电一公司承建的铁岭4台30万千瓦机组,抚顺发电厂20万千瓦机组的技改工程,抚顺热电厂10万千瓦机组工程,抚顺新抚钢厂30吨转炉和本溪北台钢厂60吨转炉工程都进入了全面施工高峰,完成了今年时间过半     

工业互联网平台在流程工业的应用现状与发展趋势

我国石油化工、冶金电力、轻工、环保等流程工业,都迫切需要互联网技术实现节能减排、降本增效。工业互联网厂商从设计研发、生产制造和运行维护等角度,推出了各类解决方案,虽然取得了一些应用,但切实解决行业痛点问题并形成可推广复制效果的工程案例并不多。从流程工业自身特点和应用需求出发,对当前主流工业互联网平台的公司基因、服务方式和技术结构进行剖析,介绍了相关智能制造技术在化工行业中的应用成果。从如何推动工业互联网技术在流程工业中落地、应用,并服务于中国智造,提出了一些发展建议。     

装备工程及实验教学仿真研究

在充分分析国内外仿真技术发展的基础上，提出了一种装备工程及实验教学仿真平台的开发。结合功能要求，介绍了系统工作流程、主要组成部分和结构框架，并对开发方法、模型建立与验证、中间变量控制进行了分析讨论。     

水利工程管理数据和流程规范研究

近年来建设的水利工程管理信息系统建设常常不能达到预期的目标,缺少适用于水利工程管理系统建设的标准或规范是主要原因之一。为此,研究给出水利工程管理信息系统的组成及其各个部分功能,提出水利工程管理的数据内容、存储要求和共享要求。并按照全生命周期管理和管理流程规范化的要求,提出管理流程要求。在此基础上编制《水利工程管理数据和流程规范》,分别提出工程监控、工程调度、维修养护、安全生产、水政监察等业务系统的功能要求及其数据和流程要求,可作为水利工程管理信息系统建设的参考或依据。     

流程工业数字孪生关键技术探讨

流程工业是制造业的重要组成部分, 是国民经济发展的重要基础, 主要包括化工、冶金、石化等行业, 其安全高效的生产对国家而言具有重要的战略意义. 然而, 流程工业物理化学变化反应复杂、流程间能质流严重耦合、多目标冲突、在线实验风险大, 给生产流程系统建模与高效协同优化带来极大困难, 严重制约了生产质量和资源利用率的进一步提升. 随着信息技术与人工智能的发展, 建立虚实结合、协同优化运行的流程工业数字孪生生产线所需技术逐渐成熟, 其在流程工业的应用价值与潜力日益凸显. 本文首先阐述数字孪生在流程工业应用的必要性与重要性, 并通过边界定义法将数字孪生与信息物理系统(Cyber-physical system, CPS)、工业互联网等概念进行对比分析,从而明确数字孪生的基本内涵与功能边界. 其次描述流程工业抽象模型和数字孪生理论模型间的映射关系, 并分析了如何用数字孪生技术解决流程工业系统建模与高效协同优化的瓶颈问题. 最后, 从数字孪生系统构建的角度探讨数字孪生发展的关键技术, 并以一条炼铁生产线为例, 展示数字孪生技术在实际工业中的应用解决方案.     

PDM系统与ERP系统的集成设计与实现

信息集成在今天和今后都是企业信息化的主要内容,也是实施诸如并行工程等其他先进技术的基础. PDH是对工程数据管理、文档管理、产品信息管理、技术数据管理、技术信息管理、图像管理以及其他产品定义信息管理技术的一种概括与扩展.PDH系统的功能包括:用户和组织管理、权限管理、系统备份与恢复、文档资料管理、软件工具集成、查询和检索功能、产品结构管理与配置、更改管理和工作流程审批等.     

湖南省制造业信息化现状、问题与发展

一、湖南省制造业信息化现状 "十五"期间,湖南制造业信息化工程以机械、电子等离散型行业和冶金、石化等流程型行业为重点,以推进湖南工业化进程的10大标志性工程为核心,以22家企业为龙头,以长株潭区域为中心,带动全省各市、州实施制造业信息化示范工程.     

控制问题研究所四十年(苏联)

在三十年代,国家工作化的发展,提出了必须解决诸如电工、冶金、热工技术等许目工业主导部门的自动控制问题。在工业、交通运輸、通讯技术、电力系统以及国防工程等方面,都产生了自动化、远动化和遥控问题。在某些重要的科研部门建立了研究自动调节,自动学和运动学问题的专家组。     

感受Inventor的强大功能

使用Inventor带给非标冷轧冶金设备设计的改进我过去一直采用传统的二维设计软件做设计。从2006年开始,正式接触Autodesk公司的三维设计软件Inventor,在学习和使用的过程中感受到了Inventor这款软件强大的功能以及带给非标冷轧冶金设备设计流程的一些改进。     

流程企业MES集成生产计划管理系统研究

流程工业主要是指化工、炼油、冶金、造纸、电力等原材料加工和能源工业行业,其特点是对生产原料伴有化学、物理、相变等反应、变化过程的连续加工.我国加入世贸组织以后,流程工业的市场竞争日趋激烈.流程型企业管理受市场影响越来越大,计划的适应性问题愈来愈突出.为了适应市场需求,企业的生产模式由MTS(面向库存生产)转向MTO(面向订单生产).产品生产呈现多品种小批量的趋势,同时要求产品质优价廉、准时交货和提供优质的售后服务.流程型企业要在竞争中获胜,必须保证在向敏捷化、连续化、自动化生产发展的同时,实行实时高效的生产管理策略.     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

正~~     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate