混合结构的真实环境下的网络操作考试系统设计与实现

介绍了基于C／S瘦客户体系结构采用ActiveX自动下载技术的B／S运行模式考试系统的设计．该系统实现了操作题参数化模板自动生成和在线自动评分、支持真实环境下的网络应用操作考试．     

基于分布式多层数据库的图书管理系统的建立

采用Delphi 6．0和MS Server 2000软件为开发工具，以三层“客户／服务器”体系为构架．实现了一般数据库的管理，对数据库的查询设计进行了优化．从而开发了一个分布式多层数据库图书管理系统。该系统运行稳定，工作可靠，功能较完善，可满足使用要求。     

网络分销管理系统的开发与应用

系统采用当今最先进的Microsoft．net技术开发，以基于B／S结构的信息系统为核心，构建网络分销管理系统的框架，使用数据库服务分离的技术，实现了系统各模块的相应功能．在应用中，客户只需使用标准浏览器上网即可使用该系统的全部功能，且在最大程度上保证B／S结构的运行效率和数据的安全性．     

并列流化床煤燃烧／煤气化炉系统的实验研究

对双室并列流化床煤燃烧／煤气化煤气发生炉的热态运行进行了实验研究，确定了煤气化系统的点火启动方式，分析研究了系统在热态运行时的操作特性及其存在的问题，并对煤的气化过程进行了实验，结果表明：系统的正常运行是可以实现的．     

Windows2000设备驱动程序的设计与开发

在分析Windows设备驱动模型(WDM)的基本结构、设计和开发等基本问题的基础上，采用WDM技术设计开发了体外反搏辅助循环装置的软件系统．该系统在临床实验中运行稳定，实现了实时、高速、多通道I／O设备驱动，较好地满足了系统(用户)对I／O设备的管理。     

面向切割机的CAD／CAM系统

介绍一个由图形向数控切割代码转换的CAD／CAM系统及系统的实现方法．详细阐述了从图形中提取各种数据文件的设计过程,通过实际运行,该系统稳定可靠,获得了良好的经济效益．     

基于网络污水处理实时仿真与控制

构建了基于网络的污水处理实时仿真与控制系统的硬件平台，采用C＋＋ Builder语言，利用UML建模方法，开发了基于TCP／IP协议系统仿真与控制软件，实现了污水处理系统的实时仿真与控制。以CSTR工艺为例，以ASM No．1模型和二沉池的沉淀模型，在Matlab／Simulink下建立了系统的仿真模型，利用Matlab／xPC Target生成了控制内核，实现了该工艺的仿真和自动控制。运行结果表明：采用厌氧-好氧生物处理的CSTR工艺中的反应池和二沉池，可以实现实时运行控制和实时仿真，并具有良好的扩充性和移植性；证明了利用网络技术对污水处理过程进行实时仿真和实时控制在技术上是可行的。     

基于内容和地址的电子邮件过滤系统的研究及实现

分析了电子邮件过滤系统的实现方案及关键技术，实现了一种基于内容和地址的电子邮件实时过滤系统．系统利用中文文档信息处理中的文档特征向量提取技术，作为邮件过滤的依据。系统运行在Linux或WindowsNT／2000平台上。经过实际运行测试，证明系统性能稳定，达到了预期设计目标。     

基于Web的虚拟数控系统的研究与开发

基于服务器／客户模式的的虚拟数控系统体系结构，讨论了虚拟数控系统的建模技术和基于VRML的实现方法，并指出虚拟数控机床的建模是虚拟数控加工过程仿真的实现关键．利用VRML语言、分布式对象技术和Java技术开发和建立了基于Web环境的虚拟数控系统原型。并对系统的开发平台进行了分析和介绍，同时给出了系统的运行实例．研究表明，所开发的系统是可行的和合理的．     

基于Pro/Engineer二次开发的齿轮优化设计及参数化造型系统研究

研究了基于Pro／Engineer开发的齿轮优化设计及参数化造型系统的方法，用该方法在Pro／Engineer二次开发工具Pro／Toolkit中调用Visual C＋＋6．0环境下编写的C语言程序，实现了与Pro／Engineer的接口开发，并利用基于惩罚函数内点法的优化方法，实现齿轮的优化设计．结果表明，该系统计算结果正确，具有工程应用价值．     

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.     

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.     

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.