浅谈如何提升天然气化工仪表自动化管理水平

我国天然气化工企业提出了安全、稳定、优质等要求,这既是天然气化工自动化的要求,也是对自动化仪表以及系统的制造、集成的技术人员的要求。因此,需要更多对仪表操作能力强的人才,必须采取相应措施提高化工仪表自动化管理水平。本文就如何提升天然气化工仪表自动化管理水平问题进行了浅要探讨。     

化工仪表安装调试及质量控制措施

本文主要介绍了化工企业自动化仪表系统的安装工作程序、施工工序质量控制措施和安装调试质量控制的技术措施,最后对仪表安装调试过程中出现的问题提出的解决对策,为从事仪表安装技术人员提供参考。     

污水处理中自动化仪表设计与应用

阐述了在污水处理中的自动化仪表的分类、工作原理，分析了不同类型的自动化仪表存污水处理工艺各个环节的设计应用，进而结合污水处理的具体工况特点对自动化仪表的设计原则、设计注意事项加以了说明。     

计算机在化工企业自动化仪表系统中的应用探析

工业经济在不断的发展进步,信息现代化技术也在不断的完善,工业企业生产发展要跟上时代的步伐就必须在企业中引进现代信息技术。化工企业的自动化仪表系统在开发及运用中采用计算机信息技术,这就表明化工企业已向生产自动化、信息化转变,这对推动化工企业的生产水平以及获得更大的经济效益有着积极而且深远的意义。     

“国际石油和化工自动化技术发展与应用研讨会暨仪表电器自动化及技改开发新成果展览会”将在京召开

为配合国内石油和化工行业新建及改扩建项目自动化仪表更新换代工作 ,采用先进的自动化系统和信息网络管理系统 ,推动“十五”规划实施 ,经科技部批准 ,并得到国内有关石油和化工企业大力支持 ,原国家石油和化工局委托中国石油和化工工业协会、中国石油和化工自动化协会 ,于 2 0 0 1年 8月 2 8～ 31日在北京举办“国际石油和化工自动化技术发展与应用研讨会暨仪表电器自动化及技改开发新成果展览会”。会议支持单位有中国石油天然气集团公司、中国石油化工集团公司和中国海洋石油集团公司。会议主要内容1.国内外石油和化工企业自动化技术现…     

基于嵌入式的智能化与网络化的自动化仪表

从嵌入式系统在仪器仪表中应用的角度出发，介绍了软硬件协同设计的设计思想和各种嵌入式处理器．讨论了嵌入式Internet接入技术和实时操作系统对自动化仪表发展的影响，指出基于嵌入式的智能化、网络化仪表是自动化仪表的发展趋势。末给出了一个基于PC104的仪表系统架构。     

高炉三电控制系统

从自动化、电气、仪表三方面入手，系统地介绍了高炉自动化生产系统的设计和通讯，井进一步讲解了各个子系统的控制工艺厦其程序的思路，最后从电气和仪表两个方面介绍了设备的选型厦其特点。通过实际应用，效果良好。     

保护回车巷历史文化古迹,打造古城邯郸风采

仪表自动化属于自动化在工业生产中仪表的应用,在我国工业自动化的领域占有十分重要的位置。本文对仪表的设计化设计及施工服务中需要注意的问题进行简单的分析,分析了仪表设计、采购和施工、运行等阶段的要求等,仅供参考。     

仪表自动化设计及施工服务应注意的问题分析

仪表自动化属于自动化在工业生产中仪表的应用,在我国工业自动化的领域占有十分重要的位置。本文对仪表的设计化设计及施工服务中需要注意的问题进行简单的分析,分析了仪表设计、采购和施工、运行等阶段的要求等,仅供参考。     

现场总线与现场仪表

随着自动化技术的不断发展，新型自动化仪表不断涌现。现场总线型仪表（以下简称现场仅表）就是其中的一种，它是自动化仪表的最新进展。一、现场总线当前，国际上自动化的热点是现场总线。随着现场总线的出现，控制功能被下放到现场，将使传统的］X3消失。因此，自动化仪表必须围绕现场总线进行设计和技术改进才有前途，这是自动化仪表发展的新动向。回．现场总线的定义一般认为：现场总线是用于现场仪表与控制室系统之间的一种全数字化、双向、多站的通信系统。因为它与现场仪表直接相连，所以它处于整个通信系统的最底层。2．现场总线的…     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。