Productivity Profiles of PhD-Granting Geography Departments in the Unites States: 1980–1994

In our study, 48 U.S. departments that grant geography PhDs are compared along four measures of academic productivity. Using 1980–1994 as the base period, research productivity of faculty was assessed by counting book titles, as well as authorships in 77 journals. Teaching productivity was determined by placement of PhDs in graduate programs of geography in North America, and by a weighted index of teaching outcomes. Data were summed for departments, but are reported primarily as productivity per person (per FTE count). The results point to a wide variety of departmental profiles, from those departments that appear to emphasize teaching outcomes to those that are more productive in book publishing and journal authorship, with several exhibiting a balance between teaching and research.     

赣东北地区前震旦系地层金的原生富集趋势探讨

在分析变质岩的含金性及地球化学性质的基础上，认为与金成矿有关的主要元素均源自前震旦系。指出了金的原生富集趋势和存在的矿源层。为在该区寻找金矿指出了方向     

湘南中新生代玄武岩成因研究及构造环境分析

定量计算了湘南中新生代多种类型玄武岩的矿物－熔浆平衡条件和岩浆粘度、密度、上升速度等岩浆物理参数，识别出了三类原生玄武岩浆，橄榄拉斑武岩浆、白榴碧玄岩浆、碧玄岩浆、根据玄武岩的地质岩石学的地球化学特征，及岩浆起源条件，深部地质和地球物理等方面资料的综合分析，认为本区玄武岩是大陆岩石圈深部热扰动的产物。     

甘肃东海金矿床地球化学特征

东海金矿床位于甘肃北山重要的Au，Ag多金属成矿带上，具长期活动特征的花牛山-察客尔呼都格压扭性断裂横贯成矿带，成矿的有利位置为大断裂及次一级断层、层间裂隙(破碎蚀变带，局部夹有石英脉)，断裂控矿特征十分明显。原生晕以亲硫元素组合为主，亦有亲氧元素。金矿石以硫化物型为主，氧化物型次之，其元素组合以成矿元素Au，Ag，Pb，Zn和亲硫元素Cu，Sb，Mo为主，也有亲氧元素W，Sn。具有深部断裂剪切、挤压带地球化学元素组合特征。     

Experimental research on reservoir sensitivity to stress and impacts on productivity in Kela 2 Gas Field

Kela 2 Gas Field, with high formation pressure (74.35MPa), high pressure coefficient (2.022) and difficulty of potential test and evaluation, is the largest integrated proved dry gas reservoir in China so far and the principal source for West-East Gas Development Project. In order to correctly evaluate the elastic-plastic deformation of rocks caused by the pressure decline during production, some researches, as the experiment on reservoir sensitivity to stress of gas filed with abnormal high pressure, are made. By testing the rock mechanic properties, porosities and permeabilities at different temperature and pressure of 342 core samples from 5 wells in this area, the variations of petro-physical properties at changing pressure are analyzed, and the applicable inspection relationship is concluded. The average productivity curve with the reservoir sensitivity to stress is plotted on the basis of the research, integrated with the field-wide productivity equation. The knowledge lays a foundation for the gas well productivity evaluation in the field and the gas field development plan, and provides effective techniques and measures for basic research on the development of similar gas fields.     

变形监测基准点的稳定性检验

基准点的稳定性评价，是变形观测数据处理时不可忽视的重要内容。该文对基准点构网和不构网2种情况时的数据处理方法进行了探讨。     

利用VB编程完成基点网联测中的各项计算

整套重力计算程序包括了除“地改”以外的所有项目的计算，在这篇文章中我们先仅介绍了“测区参数初始化”及“基点网联测”(采用三程小循环方式)的计算方法。“测区参数初始化”功能可生成gdw．csh初始化文件(该套程序的各项功能都要读取该文件中的相关参量)；“基点网联测”功能可计算基点网联测的各项精度，对联测进行平差，求出各分基点绝对重力值。     

基于等高线的DEM生成算法研究和实现

数字高程模型是近年来发展起来的为地理信息系统提供空间分析和辅助决策的数据基础。随着科学技术特别是计算机技术的迅速发展，DEM在数据获取方法、数据存储和数据处理速度等方面已经取得突破性进展。通过系统介绍生成DTM过程中等高线的离散化方法，DELAUNAY三角网的特性和基于等高线数据的TIN的建立，以及对产生的问题的一些解决方法。     

铺就GIS全球化之路--解读g.net

介绍了g.net的体系结构,阐明了其特征和关键技术,以ArcGIS为例说明了它的具体实现,为实现地理信息和服务的全球化提供了可能.     

Estimation of ocean primary productivity and its spatio-temporal variation mechanism for East China Sea based on VGPM model

According to calculation results of ocean chlorophyll concentration based on SeaWiFS data by SeaBAM model and synchronous ship-measured data, this research set up an improved model for CaseⅠand CaseⅡwater bodies respectively. The monthly chlorophyll distribution in the East China Sea in 1998 was obtained from this improved model on calculation results of SeaBAM. The euphotic depth distribution in 1998 in the East China Sea is calculated by using remote sensing data of K490 from SeaWiFS according to the relation between the euphotic depth and the oceanic diffuse attenuation coefficient. With data of ocean chlorophyll concentration, euphotic depth, ocean surface photosynthetic available radiation (PAR), daily photoperiod and optimal rate of daily carbon fixation within a water column, the monthly and annual primary productivity spatio-temporal distributions in the East China Sea in 1998 were obtained based on VGPM model. Based on analysis of those distributions, the conclusion can be drawn that there is a clear bimodality character of primary productivity in the monthly distribution in the East China Sea. In detail, the monthly distribution of primary productivity stays the lowest level in winter and rises rapidly to the peak in spring. It gets down a little in summer, and gets up a little in autumn. The daily average of primary productivity in the whole East China Sea is 560.03 mg/m2/d, which is far higher than the average of subtropical ocean areas. The annual average of primary productivity is 236.95 g/m2/a. The research on the seasonal variety mechanism of primary productivity shows that several factors that affect the spatio-temporal distribution may include the chlorophyll concentration distribution, temperature condition, the Yangtze River diluted water variety, the euphotic depth, ocean current variety, etc. But the main influencing factors may be different in each local sea area.