ARC/VIEW中Shapefile数据结构剖析及格式转换

给出了一种同时读取Shapefile空间数据和属性数据的方法，即建立一个临时数据源，通过临时数据源动态的读取属性表，设计了将ARC／VIEW中Shapefile数据格式转换成用户自己的数据格式接口程序框图，并给出了利用C 读取Shapefile文件的实现方法。该方法通过S市某建设局GIS(Geography Information System)管理系统的验证，转换了1000多幅Shapefile格式的地图，转换结果准确率达98％。     

SPT图形文件转换成BMP图像文件的研究

本文剖析了SPT图形文件和BMP图像文件的数据格式 ,叙述了用高级语言直接将SPT图形文件转换成BMP图像文件的程序框图 ,介绍了研究过程和研究中遇到的问题及解决办法 ,实现了把SPT图形文件转换成BMP图像文件的愿望。这种方法为把已有的SPT图形文件转换成BMP图像文件或其它图形图像文件奠定了基础。     

图形文件DWG数据格式及信息传递

介绍了AutoCAD 2000 的图形(*.DWG) 数据格式,给出了作为工业标准的图形文件的组织结构,对组成DWG文件的头部、实体部、表部、块实体部和应急头部等5部分进行了说明,并陈述了利用C++读取DWG文件的数据结构和实现方法.     

图形文件几何参数的抽取技术

阐述了从图形文件抽取几何参数的技术，即把复杂的内部图形文件转换成外部可读的通用文件．通过对通用文件的结构分析，找出其内在的规律，然后用高级语言进行抽取和加工，将用户所需的几何参数写人数据文件，提供给用户读写，从而达到对图形数据管理的目标．     

图形文件DWG数据格式及信息传递

介绍了AutoCAD2000的图形(*．DWG)数据格式,给出了作为工业标准的图形文件的组织结构,对组成DWG文件的头部、实体部、表部、块实体部和应急头部等5部分进行了说明,并陈述了利用C 读取DWG文件的数据结构和实现方法。     

电离层TEC预报中同化编辑器的设计

通过对GPS观测及导航数据的分析．给出了用于电离层TEC预报的同化数据格式，并在此基础上用VC 实现了TEC同化编辑器．     

LCD显示屏的上位机软件设计

分析了图形点阵式LCD显示系统的上下位机组成结构.以VC为开发平台,设计了上位机软件系统,它由文件、编辑、转换、显示、通信、帮助等6部分组成,可实现文本/图形文件的读写、文件点阵信息的转换、显示及信息下传,并可针对不同控制对象将此系统进行相应移植.     

基于AutoCAD.NET的DWG与SHAPEFILE数据转换实现

在测绘工作中,绘图数据一般为DWG格式,而GIS建库项目一般采用Shapefile格式。本文基于AutoCAD.NET,实现了从DWG到Shapefile数据文件的快捷无损转换,在项目生产中具有实际意义与推广价值。     

用VC++实现工作流管理系统的建模设计

工作流自动化中，最核心的技术为流程自定义，为了设计一个图形化、可视化以及支持各种复杂流程的建模工具，详细介绍了用VC 进行面向对象的设计方法，用一系列已经封装好的模型元素在GUI方式下定义活动的属性和工作流的相关数据，并实现模型的图形文件和数据库文件的保存与读取。应用程序通过ADO与关系数据库SQL相连从而实现流程的定义，给出了部分实现例图。可以实现模型与代码之间的相互转化，并可以随时更新，得到高效率的办公自动化。     

数据采集系统中数据获取的C++Builder实现

数据采集系统需要PC机与现场数据采集仪器进行控制、监测与数据交换，经常要对计算机的端口进行读写操作．这里主要研究了在Borland C Builder环境下如何嵌套汇编语言实现对端口的读写，从而实时获取数据，达到了很好的效果，并在相应的实例中进行了详细的探讨．     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

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…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

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。     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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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     

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