一种利用块间相关性的块运动估计算法

一种利用块间相关性的块运动估计算法⒇吴红文夏良正（东南大学热能工程研究所，南京２１００１８）（东南大学自动控制系，南京２１００１８）运动估计技术在数字电视信号编码中起着越来越重要的作用，它是去除图象序列中时间冗余的最有效方法．现已提出了许多基于电视信...     

多晶硅薄膜晶体管特性的研究

多晶硅薄膜晶体管特性的研究商陆民，汤金榜（东南大学电子工程系，南京２１００１８）（东南大学无线电工程系，南京２１００１８）周然，杨辉勋（东南大学电子工程系，南京２１００１８）（胜利油田，山东省东营市２５７０６１）用于大屏幕显示的液晶的驱动方式，可以分...     

直流式电旋风除尘器的模型

直流式电旋风除尘器的模型黄震王文梁程紫润（东南大学热能工程研究所，南京２１００１８）（东南大学环境工程系，南京２１００１８）在大气污染物的防治中，除尘仍是大气污染控制的重要课题．大型的静电除尘及布袋除尘等高效除尘设备在控制粉尘污染中起了重大作用，但...     

我国双车道公路路段车型换算系数初探

我国双车道公路路段车型换算系数初探李旭宏田锋朱骏（东南大学交通学院，南京２１００１８）（南京市规划设计研究院，南京２１００２９）不同的道路交通条件，将有不同的车型换算系数．目前，世界上许多国家都根据本国的特点提出了自己的车型换算系数．我国同样存在这...     

高强及钢纤维高强混凝土K1C,δ1C的研究

高强及钢纤维高强混凝土Ｋ１Ｃ、δ１Ｃ的研究赵永利孙伟罗欣（东南大学交通运输工程系，南京２１００１８）（东南大学材料科学与工程系，南京２１００１８）在配制高强混凝土及钢纤维高强混凝土的基础上，利用线弹性断裂力学的临界强度因子Ｋ１Ｃ和弹塑性断裂力学的裂...     

中碳铸钢微合金化的研究

中碳铸钢微合金化的研究董寅生苏华钦梅建平刘传博（东南大学机械工程系，南京２１００１８）（东南大学材料科学与工程系，南京２１００１８）钢的微合金化，就是利用合金成分的微小调整，在工艺性能不受影响或稍有改善、生产成本不显著增加的条件下，使钢的性能得到较...     

快速凝固Cu－Zn－Al－Mn－Ni－Ti合金的显微组织

快速凝固Ｃｕ－Ｚｎ－Ａｌ－Ｍｎ－Ｎｉ－Ｔｉ合金的显微组织常凤莲，苏华钦王世栋，张谨平，梅建平（东南大学机械工程系，南京２１００１８）（东南大学分析测试中心，南京２１００１８）晶粒细化是目前Ｃｕ基记忆合金研究焦点之一。快速凝固技术应用于制备Ｃｕ基记忆合...     

分形模型在模拟自然景物中的应用

分形模型在模拟自然景物中的应用赵林度盛昭瀚（东南大学经济管理学院，南京２１００１８）由于分形模型的许多特性，使它成为模拟自然景物的实用模型［１，２］．１）自然界中的分形结构是普遍存在的，因为它们产生于许多共同的物理过程，如腐蚀、引力和湍流．２）分形模...     

二氧化钛修饰电极的光伏特性研究

二氧化钛修饰电极的光伏特性研究方靖淮（南通师范专科学校，南通２２６００７）顾建华陆祖宏（东南大学分子与生物分子电子学开放研究实验室，南京２１００１８）用有机染料和窄禁带半导体修饰敏化宽禁带半导体以增加太阳光的利用率是太阳能电池研究的一个重要领域．在...     

WWW在东南大学校园网中的应用

ＷＷＷ在东南大学校园网中的应用吴洁（东南大学信息中心，南京２１００１８）１ＷＷＷ及ＭＯＳＡＩＣ简介环球信息网ＷＷＷ（Ｗｏｒｌｄ－Ｗｉｄｅ－Ｗｅｂ）是Ｉｎｔｅｒｎｅｔ网上最为流行的信息检索服务程序，是信息发现技术和超文本技术的综合．ＷＷＷ服务器把信息组...     

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.