试论英语教材的“二次开发”——以人教社SEFC（Revised）为例

新一轮基础教育课程改革倡导教师创造性地使用教材,从“教教材”走向“用教材教”。在这种教材的“二次开发”背景下,简要地论述了英语教材“二次开发”的含义、“二次开发”必要性和重要性、“二次开发”的主要途径。     

AutoCAD在给排水设计中的应用

系统地叙述了AutoCAD制图软件及基于AutoCAD平台的二次开发软件由幼稚逐渐走向成熟的发展过程，重点对给排水设计中的AutoCAD应用软件“GPS”的功能和存在的问题进行了分析和探讨。     

上海软件企业自主开发超辽半数

在上海举行的第28届世界软件工程大会专题会上，普元软件独立发布了一项基础软件成果，目前在上海软件行业中，像普元这样全部靠自主开发而不做“二次开发”的企业已过半数。     

基于MapInfo的地质变量自动化选择与赋值

在ＧＩＳ中实现地质变量选择与赋值的自动化可以显著提高ＧＩＳ矿产预测工作的效率，同时也为实现ＧＩＳ矿产预测全程自动化提供的“二次开发”环境不尽相同，考虑软件平台的实用性、软件价格高低及其二次开发环境的好坏等因素，选择ＭａｐＩｎｆｏ作为基础平台，研究了在该平台内自动选择地质量并对其赋值的计算机算法，用平台的“二次开发”语言ＭａｐＢａｓｉｃ编制了算法的计算机程序。     

结构专业对AutoCAD二次开发的研究

CAD二次开发是目前国内CAD软件研究的一个热点,针对各个行业的二次开发研究都在广泛进行.在建筑结构软件领域各种二次开发软件不断出现,文章就目前建筑结构专业对AutoCAD二次开发主流方向进行论述和分析.     

回转体图形数据库及其应用

本文讨论了由Auto CAD绘图软件生成的几何图形数据结构,提出了一种适用于回转体机械零件图形的组合树数据模型。从而解决了Auto CAD二次开发中,“图一数”转换、计算机图形识别以及图形数据库应用问题。     

齿轮滚刀的计算机辅助设计及参数化绘图

本文以齿轮滚刀为例介绍了在微机上开发刀具CAD系统的方法、特别是借助于“ADS”用C语言对AutoCAD软件进行二次开发,从而实现了齿轮滚刀的参数化绘图．该软件的开发途径和设计思路为今后进一步从事这方面的研究奠定了基础．     

基于Delphi的双狐二次开发初探

本文通过对双狐软件的功能和数据格式的分析,讨论了结合实际需要利用Delphi对双狐软件进行二次开发的可行性,并结合实际需要进9行了案例测试。为更广泛的双狐二次开发提供了重要的参考依据。     

简述AutoCAD 2004二次开发工具

文章对AutoCAD2004的二次开发工具进行了较为详细的介绍,并对AutoCAD2004各种二次开发工具的特点进行了分析和比较。为AutoCAD2004软件使用者进行基于AutoCAD2004进行二次开发提供了有益的参考。     

MARC二次开发在井盖受移动载荷作用下的应用

针对MARC软件不能够直接分析物体在移动载荷作用下的应力和应变的问题,对MARC软件进行了二次开发.以井盖受移动载荷为例,采用MARC二次开发功能编写移动载荷子程序,分别分析球墨铸铁井盖和玻璃纤维增强树脂基复合材料井盖在高速、低速和加速情况下的变形和等效应力.分析结果对井盖的设计具有重要意义,对MARC软件的二次开发具...     

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).     

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.     

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.