System for normalization of a hamiltonian function based on lie series

A software system for normalization of a Hamiltonian function is described. A few examples of its applications are given. It is written in PASCAL and runs on an IBM XT/AT with 640 KB memory.     

晋城煤层气藏成藏机制

通过晋城煤层气的规模开发、压裂煤层气井的解剖、井下煤层瓦斯抽放、构造地应力场研究、煤储层大裂隙系统“CT”式解剖与煤层气封闭保存条件研究, 发现3#煤储层内部存在大量煤层气包, 构造微破裂作用促使煤层气包之间广泛合并联通, 煤层气包内部储层的非均质性弱化, 渗透率增加, 煤层气包内部的游离气体比例增加, 流体压力系统边界逐渐清晰并形成煤层气藏. 揭示煤层气藏的成藏机制, 认识煤层气藏的内部细节特征, 促进了该区的煤层气开发技术进步, 提高了井下煤层瓦斯的抽放效率.      

The double solid reactant method: II. An application to the shallow groundwaters of the Porto Plain,Vulcano Island (Italy)

This paper presents an example of application of the double solid reactant method (DSRM) of Accornero and Marini (Environmental Geology, 2007a), an effective way for modeling the fate of several dissolved trace elements during water–rock interaction. The EQ3/6 software package was used for simulating the irreversible water–rock mass transfer accompanying the generation of the groundwaters of the Porto Plain shallow aquifer, starting from a degassed diluted crateric steam condensate. Reaction path modeling was performed in reaction progress mode and under closed-system conditions. The simulations assumed: (1) bulk dissolution (i.e., without any constraint on the kinetics of dissolution/precipitation reactions) of a single solid phase, a leucite-latitic glass, and (2) precipitation of amorphous silica, barite, alunite, jarosite, anhydrite, kaolinite, a solid mixture of smectites, fluorite, a solid mixture of hydroxides, illite-K, a solid mixture of saponites, a solid mixture of trigonal carbonates and a solid mixture of orthorhombic carbonates. Analytical concentrations of major chemical elements and several trace elements (Cr, Mn, Fe, Ni, Cu, Zn, As, Sr and Ba) in groundwaters were satisfactorily reproduced. In addition to these simulations, similar runs for a rhyolite, a latite and a trachyte permitted to calculate major oxide contents for the authigenic paragenesis which are comparable, to a first approximation, with the corresponding data measured for local altered rocks belonging to the silicic, advanced argillic and intermediate argillic alteration facies. The important role played by both the solid mixture of trigonal carbonates as sequestrator of Mn, Zn, Cu and Ni and the solid mixture of orthorhombic carbonates as scavenger of Sr and Ba is emphasized.

基于小波包变换的面波分离技术研究

依据面波视速度的分布范围,提出一种新的叠前面波分离技术,即把地震波场分成不受面波影响的波场和受面波影响的波场,然后利用小波包变换对受面波影响的波场进行时频分析,通过分解与重构,从中提取有效波,再将其与不受面波影响的波场合并,就可得到面波分离后的地震波场。该方法在成功分离面波的同时,可使有效波的能量(尤其是其低频能量)不受损失,既有效地保持信号的频宽不变,又提高了记录的信噪比。实际资料的处理结果表明:此方法在叠前面波分离方面具有有良好的效果。     

Using unmanned underwater vehicles as research platforms in coastal ocean studies

The advantages of using unmanned underwater vehicles in coastal ocean studies are emphasized. Two types of representative vehicles, remotely operated vehicle (ROV) and autonomous underwater vehicle (AUV) from University of South Florida, are discussed. Two individual modular sensor packages designed and tested for these platforms and field measurement results are also presented. The bottom classification and albedo package, BCAP, provides fast and accurate estimates of bottom albedos, along with other parameters such as in-water remote sensing reflectance. The real-time ocean bottom optical topographer, ROBOT, reveals high-resolution 3-dimentional bottom topography for target identification. Field data and results from recent Coastal Benthic Optical Properties field campaign, 1999 and 2000, are presented. Advantages and limitations of these vehicles and applications of modular sensor packages are compared and discussed.     

Using GIS to Model and Forecast HIV/AIDS Rates in Africa, 1986–2010

In this article we draw on the power of geographic information systems (GIS) to examine the progression of HIV/AIDS in Africa for the period from 1986 to 2003. We use GIS for two purposes: (1) to transform and interpolate a set of annual point-based HIV/AIDS rates into area data; and (2) to extract or “mine” annual HIV/AIDS prevalence rates from the interpolated area (country) level maps. Once the rates are extracted from the GIS analysis we then model and forecast them into the near future (i.e., 2004–2010) by using the UNAIDS Estimation and Projection Package (EPP) software. The article offers an alternative grounded in geospatial analysis for yielding estimates of HIV/AIDS rates in Africa. Using incomplete sets of data for the period from 1986 to 2003, mean HIV/AIDS rates are generated from spatially interpolated data and future trends are estimated. The results indicate that the HIV/AIDS epidemic for many countries in Africa has reached the saturation or maturity level as evidenced by the typical S-shaped curves in the trends over time. As a matter of fact, some countries have begun to experience a sustained decline in the rates (e.g., Uganda, Burundi, Rwanda, and Zimbabwe).     

黔南桂北下三叠统碳酸盐海岸—陆架沉积总体的沉积构成及沉积过程分析

在黔南桂北下三叠统进行沉积过程和沉积构成分析的基础上,识别出了构成碳酸盐海岸—陆架沉积总体的4种成因单位和7种沉积相。同时本文还对碳酸盐海岸—陆架沉积总体的演化过程及其与其它沉积总体的空间组合关系进行了讨论。     

微机遥感图像应用处理系统

本文详细介绍了我们研制的微机遥感图像应用处理系统。它的硬件部分以四台微机为主,采用分布式联接,组成四个子系统,可供1—4人同时操作,能方便地输入输出多种数据和图像。该系统的软件部分,由对应硬件子系统的四个软件包组成,即磁带机数据采集软件包,图像显示软件包,专题制图软件包及遥感应用处理软件包。作为重点的第四部分软件,是在遥感应用工作者的经验和工作方法的基础上设计的,它收集和综合了各种实用处理方法,比通用的图像处理软件包更具有遥感应用的特色。     

VLBI资料处理软件系统OCCAM V6.0简介

OCCAM V6．0是在PC机上开发的一套VLBI大地测量数据处理软件。该软件用标准FORTRAN77(90)语言编写，可在Windows95以上版本和LINUX环境下的PC机上运行，其主要特点是操作简便、兼容性好、处理容量大、速度快和结果输出多样化等。随着该软件的不断改进和发展，利用OCCAM进行VLBI数据分析的学者逐渐增多，OCCAM软件的使用也日益广泛。本文简要介绍了OCCAM软件的安装、各个模块的主要功能和在运行中的注意事项，供今后OCCAM用户在使用过程中参考。