尺度参数的Lp估计与精度评定

根据定位参数与尺度参数的联合Ｍ估计,导出了尺度参数的Ｌｐ估计;当ｐ＝２时,与最小二乘估计一致,观测数据服从正态分布时,为最优无偏估计;由于尺度参数Ｌｐ估计的影响函数为无界函数,估计不具抗差性,但把残差Ｗｉｎｓｏｒ化,作者得到了尺度参数的抗差Ｌｐ估计;依据定位参数的协方差阵,可进行Ｌｐ估计的精度评定。这些结果对于Ｌｐ估计的研究和应用具有一定的参考价值。     

基于互补性参数的港湾初级生产力遥感及GIS探测模型

到目前为止,港湾初级生产力的遥感探测方法基本上集中在对叶绿素的光谱探测上,由于干扰因素的存在（海面波动,水中悬浮泥砂）,使遥感探测的精度受到影响。本文提出一种基于地理信息系统方法的具有互补性参数的港湾初级生产力遥感探测模型,由于互补性参数的存在,极大地提高了模型的抗干扰能力,使探测的精度得到明显改善。在广东大亚湾的初步试验表明：水交换状态参数的引用,模型的误差从６．５％降为０．２６％,精度大大提高,从而证明该方法的可行性和有效性。     

1997年1月21日～4月16日新疆伽师强震群综述

１９９７年１月２１日～４月１６日,新疆伽师相继发生了７次Ｍ≥６的地震,造成了破坏与伤亡。该文就伽师强震群进行了综述,包括：地震类型和地震参数;震源机制;伽师地震的临震预报;地震现场工作等。     

结构被动耗能减振效果的参数影响

本文研究粘滞、粘弹、金属屈服和摩擦型上类与斜撑串联的被动耗能器对结构减振效果的参数影响。首先,建立了结构、耗能器和斜撑共同工作的计算模型;然后考虑不同耗能器的特点,给出了相应的运动方程;第三,通过大量的数值计算,研究了耗能器刚度（或耗能器与斜撑的组合刚度）、屈服位移等参数对结合减振结果的影响,得到了这些参数的最佳取值范围,从而为结构的耗能减振设计提供了基础。     

动态随机有限元法

本提出分析了不确定性结构随机动力响应的一种新的数据方法－－动态随机有限元法。经的特点是引入反映结构振动特征的动态形函数,中引出了相应的计算列式。算例表明,本方法的计算效率及数值精度均优于一般的随机有了限元法,具有应用前景。     

Inversion of source process and related studies of the Taiwan Strait earthquake using genetic algorithm

ＩｎｖｅｒｓｉｏｎｏｆｓｏｕｒｃｅｐｒｏｃｅｓａｎｄｒｅｌａｔｅｄｓｔｕｄｉｅｓｏｆｔｈｅＴａｉｗａｎＳｔｒａｉｔｅａｒｔｈｑｕａｋｅｕｓ－ｉｎｇｇｅｎｅｔｉｃａｌｇｏｒｉｔｈｍＨＡＩ－ＪＵＮＷＡＮＧ１）（王海军）ＢＡＮＧ－ＨＵＩＬＩＮ１）（林邦慧...     

Kalman filtering in groundwater flow modelling: problems and prospects

The popularity of applying filtering theory in the environmental and hydrological sciences passed its first climax in the 1970s. Like so many other new mathematical methods it was simply the fashion at the time. The study of groundwater systems was not immune to this fashion, but neither was it by any means a prominent area of application. The spatial-temporal characteristics of groundwater flow are customarily described by analytical or, more frequently, numerical, physics-based models. Consequently, the state-space representations associated with filtering must be of a high order, with an immediately apparent computational over-burden. And therein lies part of the reason for the but modest interest there has been in applying Kalman filtering to groundwater systems, as reviewed critically in this paper. Filtering theory may be used to address a variety of problems, such as: state estimation and reconstruction, parameter estimation (including the study of uncertainty and its propagation), combined state-parameter estimation, input estimation, estimation of the variance-covariance properties of stochastic disturbances, the design of observation networks, and the analysis of parameter identifiability. A large proportion of previous studies has dealt with the problem of parameter estimation in one form or another. This may well not remain the focus of attention in the future. Instead, filtering theory may find wider application in the context of data assimilation, that is, in reconstructing fields of flow and the migration of sub-surface contaminant plumes from relatively sparse observations. Received: October 27, 1997     

The geotechnical properties and behaviour of a pro-glacial lake clay, and its cementitious stabilization

The Tees Laminated Clay forms a continuous deposit around the Tees estuary in north east England and was deposited in a proglacial lake which occupied the Teesside area during late Devensian times, disappearing about 13 000 years ago. It overlies till, with which it has a sharp contact and reaches a maximum thickness in parts of central Middlesbrough of just over 9 m. The laminations consist of alternating thin layers of clay and silt, and represent seasonal increments of sediment. Kaolinite and illite, with lesser amounts of chlorite, dominate the mineral composition. Quartz tends to account for less than 35%. The notable carbonate content may be diagenetic in origin. The birefringence ratio of the clay minerals indicates a medium degree of particle orientation which suggests a partially flocculated fabric.This laminated clay has a high plasticity. However, the liquid and plastic limits of the silty layers differ significantly from those of the clay layers or the bulk samples. The clay fraction has a greater influence on these limits than the silty fraction. In addition, the linear shrinkage, liquidity indices and consistency indices of the silty layers differ appreciably from those of the clay layers and the bulk samples. The laminated clay is inactive. The orientation of the laminations in relation to the direction of maximum principal stress influences the shear strength, the lowest strengths being developed when these orientations are between 30° and 60°. The stress paths, anisotropic ratios and values of Af indicate that the Tees Laminated Clay is normally consolidated or lightly overconsolidated. The McLamore–Gray concept possibly can be applied to the anisotropic strength behaviour.Tees Laminated Clay can give rise to problems during construction operations since it can lose strength significantly on remoulding. Accordingly, these soils were treated with cementitious materials to determine the extent to which their engineering behaviour was enhanced by the addition of such materials. © Rapid Science Ltd. 1998     

利用声波测井计算岩石的力学参数

介绍了岩石力学参数的测量方法及岩石动、静弹性参数相关关系,最后用实际声波测井资料来分析计划岩石的力学参数。     

新矿物（1992.7—1992.12）

本文以表格形式列举了１９９２年７月至１９９２年１２月经《国际矿物学协会（ＩＩＭＡ）新矿物与矿物命名委员会（ＣＮＭＭＮ）》批准并在各国矿物学杂志上发表的５０个新矿物的中文英文名称、化学式及其他数据。数据依次为：矿物的晶系、空间群、晶胞参数、主要粉晶数据（Ｉ、ｈｋｌ）、物理性质（晶形、颜色、条痕、光泽、解理、发光、硬度、密度等）、光学性质（一、二轴晶、正、负光性,折光率,反射率,双反射,２Ｖ,色散,吸