基坑变形影响因素与有限元数值模拟

基坑变形影响因素是其变形控制的重要内容之一，在自制深基坑工程变形控制优化设计及其有限元数值模拟系统(SDCDEFEM)的基础上，重点对影响基坑变形的各因素进行了有限元数值模拟分析，并对实测和计算的基坑周边最大沉降、支护结构最大水平位移和坑底最大隆起及其位置进行了统计分析，得出了简明估算基坑最大变形及其位置的统计关系式，提出了经济有效的变形控制对策。     

网络营销控制二三题

网络营销控制是网络管理的重要内容,开展网络市场营销活动必须有网络运转的有效控制作保证。在讨论网络营销控制特征与内容的基础上,着重分析了网络营销活动的盈利能力、营销效率和营销策略控制的方法与技术。     

黄土滑坡临滑预报的应变控制方法

我国西北部地区黄土沉积巨厚，地质构造复杂，土体强度低，水敏感性强，各种类型的黄土滑坡广泛分布。黄土滑坡具有滑动规模大、滑动速度快、灾害损失严重等特点。黄土滑坡滑动时间预报，特别是临滑预报在地质灾害防治领域具重要意义。根据黄土力学性质试验与典型黄土滑坡变形分析研究结果，在对比分析黄土剪切应变特性与滑坡滑动破坏机制的基础上，论文提出了一种黄土滑坡临滑预报的应变控制方法。建立了中、浅层与厚层黄土滑坡的应变破坏标准。经多处滑坡实例验证，结果基本合理，可应用于黄土滑坡临滑预报。     

VLAN技术在福建省地震信息网络中的应用

本文介绍了如何在福建省地震信息网络中应用VLAN技术规划网络并进行有效的管理,减少广播风暴的发生,提高网络安全性。     

网形不一致的工程控制网稳定性分析

对于施工周期较长的大型工程,通常需要对控制网进行定期复测和稳定性分析。控制网复测期间,有时会遇到点位破坏或增设新点等情况,从而使两期控制网的网形不一致。针对控制网无固定起算点和网形改变的问题,讨论控制网的稳定性分析方法,并进行实例分析,为控制网的正确使用提供重要保证。     

网络环境下三维模型的多尺度数据组织方法

本文针对网络环境下海量三维模型数据的传输与可视化要求,探讨了三维模型数据多尺度组织方法.设计了基于点索引的三维模型几何数据结构,结合多尺度纹理表达,构建三维模型多尺度数据结构.在此基础上,基于四叉树结构构建分层分块的三维模型数据多尺度存储结构,从而适应三维模型数据的多尺度分块调度与传输,并通过实验验证该方法能根据三维场...     

Revisiting Sustainable Development of Dry Valleys in Hengduan Mountains Region

Dry valleys are a striking geographic landscape in Hengduan Mountains Region and are characterized by low rainfall, desert type of vegetation and fragile environment. Past efforts and resources have been concentrated mainly on rehabilitation of degraded ecosystem and fragile environment, particularly reforestation, while socio-economic development has been largely overlooked. Despite successes in pocket areas, the overall trend of unsustainability and environmental deterioration are continuing. It is important to understand that uplift of the Tibetan Plateau is the root cause of development of dry valleys, and development and formation of dry valleys is a natural process. Human intervention has played a secondary role in development of dry valleys and degradation of dry valleys though human intervention in many cases has speeded up environmental degradation of the dry valleys. It is important to understand that dry valleys are climatic enclaves and an integrated approach that combines rehabilitation of degraded ecosystems and socio-economic development should be adopted if the overall goal of sustainable development of dry valleys is to be achieved. Promotion of niche-based cash crops, rural energy including hydropower, solar energy, biogas and fuelwood plantation is recommended as the priority activities.     

广西岩溶区金属硫化物矿床风化与元素表生迁移特征

对广西岩溶区三个铅锌硫化物矿床风化带观测结果表明，中低山岩溶区硫化物矿床具有更强烈的风化淋滤作用，但次生晕面积较小；岩溶平原区硫化物矿床风化与元素表生迁移特征较相似于非岩溶区的情况，表现在可产生较宽的ｐＨ偏低带和较大面积的次生晕     

社会资本对区域创新能力的影响

社会资本影响知识创造、知识获取与知识整合,进而影响区域创新能力的提升。基于中国大陆31个省份的截面数据,以无偿献血率、信任度和社会组织密度指标测量区域社会资本,以知识创造、知识获取、企业创新、创新环境和创新绩效等5个指标衡量区域创新能力,采用相关分析和多元回归模型分析社会资本与区域创新能力之间的关系。结果显示：（1）我国各省区间的社会资本与区域创新能力均存在较大差异,但两者的空间分布状况具有相似性;（2）信任纬度与区域创新能力呈显著正相关关系,而规范纬度和网络纬度与区域创新能力呈负相关关系;（3）人均GDP、R&D人员和研发机构数量与区域创新能力均呈正相关关系。最后,提出了提高社会资本、增强区域创新能力的对策。     

Horizontal crustal movement in Chinese mainland from 1999 to 2001

The paper introduces the horizontal crustal movement obtained from GPS observations in the regional networks (including the basic network and the fiducial network) of the Crustal Movement Observation Network of China (CMONOC) carried out in 1999 and 2001. This paper is characterized by the acquisition of the horizontal displacement velocities during the period from 1999 to 2001 at the observation stations in the regional networks with datum definition of a group of stable stations with small mutual displacements in east China. Based on the most detailed map of horizontal crustal movement in Chinese mainland, the division of blocks, their displacements and deformations are studied. An approach to analysis of the intensity of the horizontal crustal deformation is proposed. The general characteristics of the recent horizontal crustal movement in Chinese mainland and that before the Kunlunshan earthquake of M=8.1 on November 14, 2001 are analyzed. Foundation item: The National Development and Programming Project for Key Basic Research (95-13-03-07).