超声CT法无损测温

本文研究了测温用的超声ＣＴ算法，分析了测量精度和时间，运用两种迭代法讨论了声波受到人体内骨骼、空气阻碍时，投影数据缺损情况下的超声ＣＴ重建算法。文中还进一步研究了超声衍射ＣＴ；在卷积－反传播法的基础上，提出一种新的投影数据缺损时超声衍射ＣＴ算法，并给出了计算机仿真的结果。     

环形移位悬浮存储器体系并行CT图象重建系统

针对三维计算机层面成象（ＣＴ）图象重建所必须的巨大运算量，提出了一种采用多处 理器并行处理技术实现三维ＣＴ高速图象重建的技术方案：“环形移位悬浮存储器”体系并行 结构，并分析了三维ＣＴ图象重建实现并行的原理，“环形移位悬浮存储器”并行处理系统的体 系结构，以及理论结果。     

CCT图的计算机辅助推定模型及程序系统

提出了计算机推定焊接ＣＣＴ图的原理及模型，深入分析了１３０多种钢材的焊接ＣＣＴ图形特征与化学成分的相关性，在建立钢材化学成分、ＣＣＴ图及临界点等数据库的基础上，利用多元统计回归技术求出了推定公式中的有关参数，进而开发了程序系统ＷＣＣＴ－ＣＡＤ，应用这一程序系统，实现了给定钢材化学成分并通过一定的人机对话，由计算机自动制定出焊接ＣＣＴ图组织转变曲线的设想。     

关于CIP3及CTP5的发展

随着ＤＴＰ系统和ＣＴＰ技术的发展,产生了以计算机直接制版和计算机直接无版印刷方式为基础的数字印刷,现代印刷高科技正推动着传统印刷业发生前所未有的变化。笔者阐述了现代印刷技术的发展,重点对ＣＩＰ３概念及计算机直接制技术（ＣＴＰ）进行了综述。     

一种新二维离散余弦变换快速算法

利用三角函数公式提出了一种将Ｎ×ＮＤＣＴ分解为Ｎ个１－ＤＤＣＴ的新的快速算法－ＤＤＣＴ算法，给出了８×８ＤＤＣＴ的算法流程图，并与其它２－ＤＤＣＴ快速算法在计算量及计算结构上进行了比较，计算机仿真结果表明，ＤＤＣＴ算法的计算精度明显高于行－列法。     

对高等学校非计算机专业中计算机教育的探索与实践

非计算机专业学生占全体大学生９５％以上，在这部分学生中进行计算机教育，开展计算机应用，是一项具有深远意义的任务。作者经十几年的探索与实践，总结出一套适合非计算机专业进行计算机教育的教学体系与方法；建立了一套适合于非计算机专业的教材体系，编写出版了一整套具有特色的教材；提出了“４个层次”的教育方案；深深感到；既要有雄心壮志，又要坚持结合国情，一切从实际出发。     

沿圆弧形路径积分的反射式超声层析成像方法及实验研究

讨论了近场及远场条件下沿圆弧积分的超声反射ＣＴ成像的重建算法,进行了计算机模拟成像,在此基础上,建立了一套超声反射ＣＴ成像系统,对部分样品模型进行了实验成像。     

广西高校计算机等级考试管理系统的开发与应用

采用面向对象的快速原型法和原型渐进法，使用ＰｏｗｅｒＢｕｉｌｄｅｒ６．０等快速生成原型的软件工具开发广西高校计算机等级考试管理系统（ＭＣＴ）。系统设计有良好的可扩展性和可维护性，采用开发的推广应用方式，建立ＭＣＴ网站供软件新版本下载，提供针对性的技术保障服务，ＭＣＴ系统已在广西４２所学校和厅高教处使用５年，使广西高校计算机等级考试考务管理全面实现计算机化，提高了考务管理工作的质量和效率。     

FACTS 技术计算机辅助工程平台

介绍了用于柔性交流输电技术（ＦＡＣＴＳ）装置控制系统设计和运行的计算机辅助工程（ＣＡＥ）平台。讨论了ＣＡＥ平台的系统结构、数据流程以及实现的功能。给出了ＣＡＥ平台的软件和硬件设计方法：软件设计采用Ｗｉｎｄｏｗｓ９５和ＶｉｓｕａｌＣ＋＋作为工具进行开发，并提供了对硬件系统的接口，因此用户界面友好，使用方便；硬件部分采用工业控制计算机为母机，以ＤＳＰ为协处理器，易于满足实时控制和提高装置可靠性的要求。ＣＡＥ平台作为一个一体化的环境，能支持ＦＡＣＴＳ装置控制器设计的整个生命周期，即理论设计、数字仿真、在线调试、动模实验和实时运行     

信用卡电话呼叫系统

信用卡电话呼叫系统,同ＩＰ电话技术、呼叫中心技术与信用卡支付手段相结合的系统,是集现代计算机技术、网络技术、ＣＴＩ技术、多媒体技术以及互联网技术于一体的、综合性的服务中心。信用卡电话呼叫系统即可独立成系统,也可以作为呼叫中心功能的一部分,对系统的体系结构、功能、应用以及发展方向进行了介绍。     

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…     

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.     

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.