试析OLE2对象的特征及性能技巧

分析了ＯＬＥ２的对象、含有嵌入对象的载体文档、含有链接对象的载体文档的数据结构形式，以及对象的源文件与载体文体之间的关系、创建对象的应用程序与载体文档之间的关系；探讨了嵌入对象与链接对象的特征和应用ＯＬＥ２的两种不同对象的技巧。     

对象,面向对象的本质及解释

给出了３类对象的定义及其特征,讨论了它们的演变进程、相互关系及软件对象的动态表示;给出了面向对象的定义,讨论了用面向对象方法模拟现实世界的实现过程和现实空间与模拟空间的对应关系,以及空间对象间的相互联系关系．在上述定义和讨论中,对对象和面向对象的本质特性,作出了较完整的理论分析和图形解释．     

一种用于Web应用程序测试的对象模型

Web应用程序开发的复杂性使得Web应用程序测试技术的研究成为软件测试领域的研究热点。提出了一种用于Web应用程序测试的对象模型,该模型从便于测试的角度将Web应用程序抽象成三种对象:客户端对象、服务端对象和组件对象。与以往的模型相比较,该模型不仅有助于测试人员理解Web应用程序,也有助于测试用例的直接提取。     

基于图文法的对象操作可视化

讨论对象的操作可视化,将其连续操作映射为图的剪枝与拼接,对其连续操作映射为图文法的推导,这不仅可视化了查询语言,也有利于可视化对象的设计过程。     

基于CORBA的Java开发实例的研究

本文介绍了CORBA与Java的内在联系,分析了CORBA技术和Java语言结合的优势,并通过一个使用Java开发CORBA的简单实例,强调了CORBA技术和Java结合的优越性.     

ACCESS数据库应用开发特色及方法

为了进一步加强Ｖｉｓｕａｌ－Ｂａｓｉｃ的应用系统开发范围，作者在分析ＡＣＣＥＳＳ数据库结构的基础上，探讨了用ＡＣＣＥＳＳ进行应用系统开发的特色，并阐述了ＡＣＣＥＳＳ的常用开发方法，实践证明，完全能达到用户共享，有较小的冗余度和较高的数据与程序独立性的要求。     

简单对象访问协议(SOAP)与防火墙

提出了防火墙在Internet应用中阻断合法RPC的问题，简述了SOAP协议及其工作方式，给出了SOAP如何与HTTP结合来实现与防火墙共同工作的方法，文章给出了具体实例和说明。     

分布式系统的层次式命名方案设计

针对大规模分布式系统中对象迁移，网络和系统动态重构的要求，本提出了一种层次式的命名和编址方案，它将对位置透明的标识和表示的位置的地址二结合起来标识对象。     

Word文档中若干图片类对象的分析与自动阅卷的实现

利用VBA工具及Office对象模型，分析Word文档中若干图片类对象以及这些对象属性的获取方法，并将这些属性信息运用于Word文档的自动阅卷与评分系统。这种阅卷评分方法可以广泛应用于计算机课程(或信息技术课程)上机练习与上机考试系统的设计。     

JAVA语言实现对象关系数据库的方法

ＪＡＶＡ语言的产生以及ＪＡＶＡ虚拟机的跨平台性为开发新的对象数据提供了方便,提出了一种按照Ａｔｋｉｎｓｏｎ正交持久化理论持久化对象,按照ＡｓｓｏｃｉａｔｉｏｎＡｌｇｅｂｒａ中关联逄子计算关联集来访问持久对象集的对象关系数据库的管理与方法。     

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.