黑龙江省国土资源应用程序系统体系结构研究     

陈良军李丹  刘京文 《黑龙江国土资源》2003,(4):34-35

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微机报表管理技术     

李文鑫 《物探化探计算技术》1995,17(1):89-92,83

微机报表管理技术李文鑫（广西第四地质队）一、前言众多的微机用户对于电子表格的制作已是家常便饭了，无论是使用制表软件还是一般的桌面印刷系统，都可以制作出比较满意的表格来。但是，一般的制表软件或桌面印刷系统，都只能对单个表格进行编辑，虽然有些软件可以同时...  相似文献   

http://www.sciencedirect.com/science/article/pii/S1674987112000849     

A.M.Gorodnitskiy  Yu.V.Brusilovskiy  A.N.Ivanenko  A.M.Filin  N.A.Shishkina 《地学前缘(英文版)》2013,4(1):73-85

New methods are presented for processing and interpretation of shallow marine differential magnetic data,including constructing maps of offshore total magnetic anomalies with an extremely high resolution of up to 1-2 nT,mapping weak anomalies of 5-10 nT caused by mineralization effects at the contacts of hydrocarbons with host rocks,estimating depths to upper and lower boundaries of anomalous magnetic sources,and estimating thickness of magnetic layers and boundaries of tectonic blocks. Horizontal dimensions of tectonic blocks in the so-called "seismic gap" region in the central Kuril Arc vary from 10 to 100 km,with typical dimensions of 25-30 km.The area of the "seismic gap" is a zone of intense tectonic activity and recent volcanism.Deep sources causing magnetic anomalies in the area are similar to the "magnetic belt" near Hokkaido. In the southern and central parts of Barents Sea,tectonic blocks with widths of 30-100 km,and upper and lower boundaries of magnetic layers ranging from depths of 10 to 5 km and 18 to 30 km are calculated.Models of the magnetic layer underlying the Mezen Basin in an inland part of the White Sea-Barents Sea paleorift indicate depths to the lower boundary of the layer of 12-30 km.Weak local magnetic anomalies of 2-5 nT in the northern and central Caspian Sea were identified using the new methods,and drilling confirms that the anomalies are related to concentrations of hydrocarbon.Two layers causing magnetic anomalies are identified in the northern Caspian Sea from magnetic anomaly spectra.The upper layer lies immediately beneath the sea bottom and the lower layer occurs at depths between 30-40 m and 150-200 m.  相似文献   

Application of a Derivative-Free Method with Projection Skill to Solve an Optimization Problem          下载免费PDF全文

PENG Fei  SUN Guo-Dong 《大气和海洋科学快报》2014,7(6):499-504

Improving numerical forecasting skill in the atmospheric and oceanic sciences by solving optimization problems is an important issue. One such method is to compute the conditional nonlinear optimal perturbation（CNOP）, which has been applied widely in predictability studies. In this study, the Differential Evolution（DE） algorithm, which is a derivative-free algorithm and has been applied to obtain CNOPs for exploring the uncertainty of terrestrial ecosystem processes, was employed to obtain the CNOPs for finite-dimensional optimization problems with ball constraint conditions using Burgers＇ equation. The aim was first to test if the CNOP calculated by the DE algorithm is similar to that computed by traditional optimization algorithms, such as the Spectral Projected Gradient（SPG2） algorithm. The second motive was to supply a possible route through which the CNOP approach can be applied in predictability studies in the atmospheric and oceanic sciences without obtaining a model adjoint system, or for optimization problems with non-differentiable cost functions. A projection skill was first explanted to the DE algorithm to calculate the CNOPs. To validate the algorithm, the SPG2 algorithm was also applied to obtain the CNOPs for the same optimization problems. The results showed that the CNOPs obtained by the DE algorithm were nearly the same as those obtained by the SPG2 algorithm in terms of their spatial distributions and nonlinear evolutions. The implication is that the DE algorithm could be employed to calculate the optimal values of optimization problems, especially for non-differentiable and nonlinear optimization problems associated with the atmospheric and oceanic sciences.  相似文献   

浅谈利用RIA与REST的WebGIS研究     

左兴东 《测绘与空间地理信息》2014,(5):156-158

针对传统WebGIS的不足,本文引入了能够创建高交互性的富互联网应用程序(RIA,Rich Internet Applications),通过对RIA技术和REST风格的研究,设计了WebGIS系统框架,在此基础上编程测试了一个试验系统,实验结果表明利用RIA和REST能有效地提高WebGIS的运行效率,极大提高了用户的体验性,很好地满足了现代用户的需求。  相似文献   

计绘设计洪水过程线程序包     

张云霄  潘汉臣 《水文科技信息》1996,13(2):60-64

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VB应用程序访问SQL Server方法探讨     

艾菊梅  陆钢 《华东地质学院学报》2001,24(4):354-356

讨论了Visual Basic应用程序访问SQL Server数据的几种常用的方法分别说明了每种方法的内部机理，并给出了每种方法的一个实例，最后 比较了每种方法的性能和优缺点。  相似文献   

VC~(++)应用程序中ODBC数据源的自动注册     

李村合 《物探化探计算技术》2003,(1)

简要介绍了微软ODBC数据库访问接口,讨论了利用VisualC++语言开发数据库应用程序时,通过SQLConfigDataSource函数自动注册ODBC数据源(DSN)的方法,并以注册Access、VisualFoxPro、Excel数据源为例,给出了实现代码。解决了用VC++开发的数据库应用程序的安装过程中需要用户通过ODBC管理器手动配置数据源的问题,提高了程序访问数据的灵活性。  相似文献   

开发惠普掌上计算机应用程序     

王晓强 《四川测绘》2001,24(4):179-180

同一般的个人计算机很相似，开发惠普掌上计算机应用程序是很容易的，但在它们之间仍然存在一些差别需要注意。  相似文献   

利用WAVELAB开发小波应用程序的研究     

樊启斌  李虹  张根寿 《武汉大学学报(信息科学版)》2001,26(2):160-164

论述了小波分析软件WAVELAB的系统构成，分析了该软件的开发环境，研究了利用该软件开发MATLAB小波应用程序的问题，并给出了以Lena图像实例的小波压缩编码程序及其运行结果。结果表明，利用WAVELAB开发小波应用软件是可行的。  相似文献