整经机网络化监控系统软件设计

为实现整经车间生产管理的信息化和生产数据在局域网内的共用,以及与纺织厂生产信息监控系统的有效集成,根据整经车间的实际需求,开发了一种新型的网络化监控系统,对系统开发的可行性进行了研究,对系统的体系结构和工作原理进行了分析,利用网络技术、通信技术和数据库技术对系统开发过程中的多机通信过程、数据采集技术、异构数据库集成技术进行了设计,并利用多线程技术对数据采集过程进行了优化,最后对系统的主要管理功能进行了介绍。该系统已在纺织企业得到应用,效果良好。     

设计喷气织机数据采集监测系统

织机数据采集监测系统是纺织企业进行信息化建设的重要内容之一。本文介绍了一种新颖的喷气织机数据采集监测系统的实现方案,文中就系统功能、结构进行了图文分析,并对系统的软、硬件设计进行了说明。     

风沙活动实时监测系统设计与实现

探讨将通信技术、数据库技术及GIS技术相结合,初步构建风沙活动实时监测系统,旨在解决沙漠中实时数据采集的难题以及定量分析监测站点的风沙活动.基于B/S与C/S混合模式,采用面向对象的程序设计方法进行系统设计与实现.实现了从数据采集、数据管理与分析到信息发布的一套完整的监测体系.从理论设计和实际应用两方面来研究风沙活动实时监测系统,探讨了利用仪器实时监测风沙活动的可能性.     

基于PC-BASE PLC的油井远程数据采集系统的设计与实现

对系统的软硬件架构、数据采集通信过程等难点和关键技术进行讨论.以PC架构可编程控制器ADAM 5510M为核心处理器,设计了油井远程数据采集系统.系统采用成熟的GPRS网络,结合嵌入式系统的软硬件技术,完成了远程数据采集处理,以达到远程实时监测、控制的效果.     

大型水轮发电机组状态监测与故障诊断系统

介绍了一个CMFD-2000系统的研究思路及其主要的研究成果,对系统使用的主要技术方法和构架作了详细的介绍.系统由两个数据采集工作站、一个数据库服务器和一个WWW服务器组成,构建了实时数据采集、信号分析、状态监测、状态分析、状态评价与预测、故障诊断、实用计算等功能模块.该系统已经成功地应用在电厂中,并取得了初步的成果,在实际应用中得到充实和完善.     

上海中心大厦结构健康监测软件集成设计及应用

论述了上海中心大厦结构健康监测软件系统的集成框架及实现要点.首先提出了由数据采集端、数据发布端和数据应用端构成的软件集成框架.继而结合大厦监测硬件系统的布置特点,论述了各部分功能的关键实现技术和特殊部署,数据管理系统通过2层数据库结构实现监测信息集成;远程发布系统基于B/S(浏览器/服务器)模式实现了监测数据的远程可视化查询和获取;结构监测/分析/评估软件SMAE基于数据发布接口实现了模态识别与有限元方法的集成分析和结构动力特性的对比评估.最后结合实例说明了系统应用效果.软件系统灵活地实现了功能集成,且易于扩展和重构,具有一定的通用性.     

GPS变形监测数据处理与管理系统的设计与实现

针对当前GPS技术广泛应用于变形监测领域的趋势和矿区变形监测的特点,采用VC .NET为开发工具,以Access为基本的数据库系统,开发了具有数据管理、坐标系统管理、平差计算、图形管理和变形分析功能的GPS变形监测数据处理与管理系统(EasyGPSDMS)。本文主要以周期性重复测量模式和静态数据处理方法作为设计思想,以数据库管理与结构体共同作为数据的组织形式,对系统的模块结构和具体功能进行了阐述,并给出了整个系统的设计与实现方法。     

无线传感器在农业环境监控中的应用

采用无线传感器网络监控农田环境可以为精准农业提供决策支持.结合传感器网络、移动网络与远程数据库技术,设计和建立一个能够同时对大气温度、大气湿度、土壤温度、土壤湿度、水温、光照强度、CO2体积分数、pH值等8个环境参数进行监测的农田环境监测平台,通过对系统整体结构以及软硬件的设计,实现了对农作物各种生长情况信息的实时采集、传输、远程监测和预测分析.通过各项功能和性能测试,系统数据服务稳定可靠.     

基于嵌入式的异步电机故障诊断系统

介绍了基于ARM与linux的异步电机故障诊断系统,同时将小波包分析法应用于异步电机故障诊断。文中对系统的软硬件结构进行了详细的阐述,系统能够进行实时数据采集和在线监测。     

基于ASP的网上办公自动化系统的设计与开发

对多种实现办公自动化系统的技术进行了比较,确定系统采用的技术ASP;介绍了在系统实施中,ASP对数据库的访问技术、系统的基本功能模块和系统的体系结构,并对系统的安全性进行了讨论;同时,对系统运行情况进行了评价.     

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.