紫金桥组态软件在空气分馏中的应用

介绍了紫金桥监控组态软件的功能和应用,分析了空气分馏的过程,并应用紫金桥监控组态软件实现了空气分馏的过程组态。     

从SL看工控组态软件开发

在成功地开发了工控组态软件的基础上，给出了实现画面组态、I／O组态。报表组态、实时监控、操作管理、报警管理等等功能的原理和方法，阐明了组态软件必须提供完善的组态手段和全面的采集、监控功能，更要保证可靠性和实时性．     

基于组态软件的交通信号配时系统设计

组态软件属于工业自动化监控软件,可以和检测、控制设备构成任意复杂的监控系统。实验教学是组态软件的应用新领域。交通信号配时设计是道路交通控制课程的重要内容,结合交通信号配时系统的设计,研究组态软件在实验教学中的应用,实现了基于组态的交通信号动态配时功能,说明组态软件在实验教学中具有很好的应用前景。     

基于S7-200 PLC和WinCC Flexible 2008的PID温度控制系统

对基于S7-200 PLC和Flexible 2008组态软件的PID温度控制系统进行了研究,介绍了基于S7-200 PLC和Flexible 2008组态软件的PID温度控制系统硬件组成及工作原理,给出了实现温度PID控制的PLC程序设计和Flexible 2008组态软件设计要点。该温度控制系统可通过Flexible 2008组态软件实现动态监控,并可设置PID温度控制阀值。利用PLC可靠性高、抗干扰能力强和组态软件开放性好、界面显示组态功能强大的特点,使温度检测和驱动模块实现温度闭环控制。     

THJ-2型高级过程控制实验系统的组态研究与开发

基于学校教改课题“控制工程综合实验系统的开发与教学研究”的实际要求,对THJ-2型高级过程控制实验系统进行了控制组态及软件开发工作.针对该实验系统使用中存在的问题,在THJ-2型实验系统的原理及硬件基础上,基于MCGS工程组态软件的主要功能及组态方法,开发了监控软件的用户界面、组态设备、数据库、组态主控窗口和组态运行策略等;基于第三方软件VB6.0编程开发了实验报告输出系统.实验装置的监控软件直观、方便,可根据用户的实际情况保存实验数据,进行处理,生成实验报告单,达到了课题的要求,填补了原来该实验系统不能进行数据输出的空白,完善了实验系统的功能,该成果已经应用到实验课程中.     

论新型水厂监控系统的设计与实现

本文从生产工艺流程及控制要求、监控系统构成、监控网络结构设计、InTouch组态软件及其应用等方面介绍了中山中法供水有限公司通过升级改造的新型生产实时监控系统,系统中主要应用了施耐德PLC和Wonderware公司InTouch组态软件。     

DDE技术在基于组态软件的供水自动化监控系统中的应用研究

介绍了动态数据交换（DDE）的基本概念和组态软件在自动化监控领域的应用情况,对DDE技术和组态软件结合进行了需求分析。以临猗县防氟供水工程自动化监控系统为例,说明了如何利用DDE技术来实现组态软件与用VB语言编制的泵站运行分析软件进行数据实时交互。     

利用组态软件实现的消防控制系统

简要介绍了利用组态软件实现的消防控制系统,阐述了该系统的构成、工作原理、特点及组态在该系统中的应用．     

腈纶纺丝生产线通讯网络与监控系统设计

文章针对腈纶纺丝生产线控制系统的控制要求,基于MPI和PROFIBUS-DP通讯协议构建了3层的腈纶纺丝生产线控制系统通讯网络,介绍了通讯网络的结构、组成、工作原理及其组态,分析了分层结构的先进性和实用价值;采用WinCC组态软件设计监控系统,介绍了集成式组态的步骤以及各监控画面的具体组态过程。现场运行结果表明,所设计的通讯网络和监控系统工作稳定可靠,可以满足实际生产需要。     

基于MCGS的单路口交通信号控制

MCGS组态软件功能强大,操作简单,易学易用,普通工程人员经过短时间的培训就能迅速掌握多数工程项目的设计和运行操作。此外,使用MCGS组态软件能够避开复杂的计算机软、硬件问题,方便设计人员集中精力去解决工程本身问题,根据工程作业的需要和特点,组态配置出高性能、高可靠性和高度专业化的工业控制监控系统。本文主要应用组态软件MCGS对三菱FX2N-48MR系列PLC设计的十字路口交通灯控制实现监控。     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.