光电设备——高级模拟和分析

作为网络和其他光通讯系统的关键组成部件，光电设备引起越来越多的关注。光电设备模拟的挑战在于电子学与光子学的结合，而多种的材料、设备、物理机械装置和模拟方法，使选择合适的理论模型和软件包成为很困难的事情。本书介绍了多种光电设备，并给出了专家学者和软件开发人员编写的先进模拟方法。     

光电转换和热光电转换的实现和应用

为了降低光电转换产品的成本,提高光电转换的效率和能量的利用率,在介绍了光电转换和热光电转换的 基本原理以及发展方向后,从动力学角度推导了热光电转换过程中选择发射器的性能与发射器材料的微观作用参 数的依赖关系,为寻找用于有效热光电转换过程的高性能选择发射器材料指明了方向;最后介绍了当前光电转换 和热光电转换的应用情况。     

光电转换和热光电转换的实现和应用

为了降低光电转换产品的成本,提高光电转换的效率和能量的利用率,在介绍了光电转换和热光电转换的基本原理以及发展方向后,从动力学角度推导了热光电转换过程中选择发射器的性能与发射器材料的微观作用参数的依赖关系,为寻找用于有效热光电转换过程的高性能选择发射器材料指明了方向;最后介绍了当前光电转换和热光电转换的应用情况。     

有机光电材料研究进展

概述了近20年来有机光电材料研究的进展,重点介绍了导电聚合物、有机电致发光二极管、有机光电转换材料、信息存储材料、有机非线性光学材料等研究领域的近期发展动态,评述了各类有机光电材料与相应无机材料相比所具有的特点,并对我国科学家在有机光电材料领域研究成果作了较详细的介绍.     

光电系统顶层规划与总体设计技术综述

简单介绍了国内光电系统现状,阐述了光电系统的顶层规划和总体设计的主要任务,从项目管理和总体设计两个方面简述了顶层规划和总体设计的主要方法、内容及现实意义,用总体设计的一般原则、基本内容和基本方法与步骤分析了光电系统总体设计思路.展望了光电技术的发展趋势,并提出了较好的建议和措施.     

浅谈光电测距三角高程代替水准测量

介绍了光电测距三角高程测量方法，阐述了误差分析和提高精度的方法，指出在水利工程测量中，用光电测距三角高程代替水准测量，可以节省时间，满足精度要求。     

光电信息材料

光电信息材料是一种新型信息材料，其传输、存储和运算信息的速度过错大于电子信息材料，在信息技术的发展中起重要作用，本文阐述了光存储材料，未免纤通信材料少光电功能材料的用途，研究现状和发展方向。     

二维材料偏振响应光电探测

各向异性二维材料由于其晶体结构的特殊性,在电学或者光学性质(如光致发光光谱、拉曼光谱、光吸收谱和电导率等)上表现出各向异性。这些性质引起了研究人员的广泛关注,特别是在光电探测方面的研究进展非常迅速,为其在光电器件的设计和开发中提供了巨大的应用潜力。文章从本征偏振探测和结构改进两方面综述了近几年来各向异性二维材料在偏振光电探测领域的发展和成果。首先阐述了各向异性二维材料的晶体结构特点和各向异性的来源,然后介绍了基于这类材料制备的多种偏振敏感光电探测器,接着提出了各向异性二维材料在光电探测应用上的重要性,最后基于现状提出了其所面临的挑战及机遇。     

新型Si光电发射材料的激活技术及激活装置

介绍了新型反射式Ｓｉ光电发射材料（Ｓｉ－Ｎａ３Ｓｂ－Ｃｓ）－Ｏ－Ｃｓ，（Ｓｉ－Ｋ３Ｓｂ－Ｃｓ）－Ｏ－Ｃｓ，（Ｓｉ－ｃｓａｓｂ－Ｃｓ）－Ｏ－Ｃｓ和（Ｓｉ－Ｎａ２ＫＳｂ－Ｃｓ）－Ｏ－Ｃｓ的激活技术．给出了新型Ｓｉ光电发射材料的逸出功、灵敏度及其稳定性并与Ｓｉ和Ｎａ２ＫＳｂ（Ｃｓ）光电材料的性能进行比较，简要讨论了影响灵敏度和稳定性的一些因素．叙述了为制备新型Ｓｉ光电发射材料所设计并加工的碱金属源、锑源、氯源及其激活系统．     

导电高分子在光电材料领域中的研究进展

综述了近年来国内外导电高分子材料在光电材料领域中研究进展情况．论述了聚乙炔、聚苯胺、聚噻吩、聚对苯乙烯撑(PPV)及其衍生物等导电高分子材料作为非线性光学材料所具有的优良性能，介绍了导电高分子电致发光材料和发光材料在实际领域中的应用．     

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.