悬挂式积放储运系统的设计

本文介绍了悬挂式储运输送系统的电气设计方案,重点介绍了控制系统的构成,硬件的组态及软件的编程调试等内容。控制系统选用西门子S7-300 PLC及ET200S构成现场控制网络,采用WINCC上位机系统通过RFID读写相关信息实现对库区的控制,并能实时显示库区内的工件信息,并进行故障统计查询等。系统具有安全可靠、技术先进,操作简便等优点。     

网络化船舶机务管理信息系统的开发

介绍了为国内某港航企业所开发的基于B/S(浏览器/服务器)模式的船舶机务管理信息系统,介绍了系统的结构、数据库设计、系统网络化综合查询等.系统使用数据正交性、数据锁、主次表、动态修改SQL语句等技术,实现数据存储、数据共享、综合查询、排序、打印、统计、预警等功能,并采用两级权限方式保证了数据库的安全与可靠.     

基于S7—200系列PLC的选煤厂集中监控系统设计

设计完成了基于S7-200系列PLC及Kingview6.5的选煤生产监控系统,并通过动态实时画面实现了生产设备的状态采集、输出控制、故障报警和历史数据查询及打印.     

基于C／S和B／S混合架构的教学质量评价系统设计

系统的开发采用B／S和C／S相结合的方式,采用大型数据库MS SQL SERVER2005作为后台,数据操作模块采用C／S模式,数据查询模块采用B／S模式,发挥了这两种模式各自的长处。本文对教学质量评价系统的背景需求、业务需求分析、功能模块、数据库物理设计、客户端操作界面的设计等方面进行了阐述。     

基于Java和MySQL技术用于PACS的网络医院预约和查询系统的研究

本文就PACS系统的重要部分——网络医院预约和查询系统进行研究,采用完全免费的Java支撑开发软件和My SQL数据库系统,开发了一个基于Web技术的操作简易、通用性强的网络化医院预约查询系统.使用B/S三层体系结构,实现了用户在远程范围内预约就诊,通过Web服务器来查询和提取用户的信息,完成客户端对服务器端医学图像的提取,利用Web浏览器实现其图像操作.实现了医学信息的共享,提高了医院就诊的效率.为PACS 系统的进一步全面开发建立了基础,对医院信息化建设有着重要的意义.     

基于B/S模式的学籍管理子系统的设计与实现

阐述了基于B/S模式下的学籍管理子系统的设计与实现。该系统采用ASP(ActiveServerPage)技术,实现了教务管理信息系统中学籍管理子系统的部分模块。它包括对教务信息的Web查询;个人信息网上登记与注册;大学外语四级和六级考试报名与成绩查询及对教师、学生的个人信息的查询、毕业生情况查询等功能。     

立体车库钢架应变网络化测控系统设计

将现代嵌入式、CAN总线与应变测试等技术相结合,设计了一款适用于立体车库的钢架应变数据网络化测控系统。硬件以S3C2410X为控制核心,采用多个CAN总线智能测试节点采集钢架应变数据,通过以太网接口实现数据网络化传输;软件选用Linux,通过搭建嵌入式Web服务器,采用B/S监控模式,驱动程序由CGI调用,实现对系统硬件模块的操作控制。用户可直接访问测控系统,阅览HTML界面时,完成系统参数设置和数据的采集、查看、下载工作。经调试和静、动态实验操作,结果表明系统综合性能良好。     

Web Services在大型旋转机械在线诊断系统中的应用

Web Services是实现信息发布的一种软件与通讯技术。提出了Web Services技术与设备故障诊断技术结合的全新思路,将设备的工艺流程、工艺参数、信号特征、故障推理诊断结论等通过软件与通讯的方式实现数据的动态交换和人机界面(HMI)的交互,供用户操作,从而形成网络化的系统信息发布。介绍了Web Services的基本原理和特点,结合国家“十五”计划“八六三”项目课题“网络化、智能化大型旋转机械在线诊断系统”,对在线诊断系统中信息发布的常见内容进行了归纳分类,描述如何采用DELPHI6 Web Services组件,实现网络化、智能化大型旋转机械在线诊断系统的信息发布、查询等功能。     

基于Web技术的涂装自动化控制系统设计

涂装生产线自动化控制系统大多数采用可编程控制器实现。然而随着企业信息化、数字化、网络化管理的不断提高,对此系统有了新的要求。本文研究了基于Web技术的涂装生产线自动控制系统的设计原理和方法,并通过例子阐述了部分过程。此技术可以更好解决涂装生产线内部各单元之间以及涂装生产线与其它异构系统的控制系统的集成问题,实现涂装生产线数字化生产。     

高等职业院校在线工资查询系统的设计与实现

介绍了基于Web模式网上工资查询系统体系结构和基本的功能实现;分析了该系统的开发工具和关键技术,从数据库设计、完全性等多个角度阐述了系统的开发关键。该系统采用浏览器/服务器（B/S）浏览器访问方式,操作简单;在服务器端使用ACCESS数据库。     

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).     

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.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.