波谱模拟模型在遥感中的应用

波谱模拟模型在遥感应用中至关重要，但是传统的波谱模拟模型应用主要是基于单机版的应用，模型模拟的结果不能广泛共享，并且利用波谱数据库的支持也十分有限。试图突破这种局限，以波谱模拟模型在遥感中的应用为主线，参照知识库系统建设的理论，采取B／S的网络结构．充分利用波谱数据库和先验知识库的强大支持，建立分布式波谱模拟模型的应用系统，通过一定的规则和算法自动从波谱数据库和先验知识库中调用数据和知识作为模型的输入参数；对于模拟的结果．可以根据用户意愿决定是否录入波谱数据库，作为知识库系统的知识获取机制，为用户进行遥感应用提供了一个有力的支持平台。     

浅析浙江地质档案利用工作

地质档案是一种特殊的不能再生的国家宝贵资源，为使浙江地质档案利用工作蓬勃开展，找们要力争领导部门的重视，切实做好地质档案基础工作，不断丰富馆藏，扩大地质档案信息资源，认真做好地质档案资料的整理、修复及档案检索工具的编制工作，同时开展咨询服务并牢记服务宗旨，树立良好的职业道德，不断探索以求发展。     

海区尺度港航地图集的表达设计——以《中国北方枢纽港港航地图集》为例

为了响应海洋强国的国家战略,促进中国海洋经济可持续发展,港航地图集成为区域性地图集编制的热点.以《中国北方枢纽港港航地图集》为例,围绕以港口经济和海事航海保障体系为核心的内容体系,从结构主义和解构主义的哲学美学角度探究海区尺度港航地图集的表达设计,为相关图集的编制提供参考.     

Development and calibration of the Moon-based EUV camera for Chang'e-3

The process of development and calibration for the first Moon-based extreme ultraviolet(EUV) camera to observe Earth's plasmasphere is introduced and the design, test and calibration results are presented. The EUV camera is composed of a multilayer film mirror, a thin film filter, a photon-counting imaging detector, a mechanism that can adjust the direction in two dimensions, a protective cover, an electronic unit and a thermal control unit. The center wavelength of the EUV camera is 30.2 nm with a bandwidth of 4.6 nm. The field of view is 14.7° with an angular resolution of 0.08°, and the sensitivity of the camera is 0.11 count s-1Rayleigh-1. The geometric calibration, the absolute photometric calibration and the relative photometric calibration are carried out under different temperatures before launch to obtain a matrix that can correct geometric distortion and a matrix for relative photometric correction,which are used for in-orbit correction of the images to ensure their accuracy.     

佘山台地倾斜资料在苏门答腊8.7级大震前的长中短期趋势异常分析

运用常规差分、趋势速率分析等多种方法综合分析了佘山台的倾斜观测资料在印尼苏门答腊8.7级大震前的长中短期异常图像及其同震阶跃.     

Web挖掘在基于标签的个性化推荐中的应用

个性化信息服务已经被公认为是解决Internet"信息过载"的方法,基于Web使用挖掘的个性化服务是目前Web个性化服务应用和研究的关键技术,将基于Web挖掘的个性化信息服务思想具体应用到标签推荐个性化服务体系中,实现信息的个性化推荐服务.     

Determining Rayleigh damping parameters of soils for finite element analysis

Soil damping ratio is an important parameter for modelling the dynamic behaviour of soil embankment structures, especially for the micro‐vibration analysis of hospitals and high‐tech industries, which have a very severe construction requirement for vibration. This paper explores using a least‐squares method to evaluate the Rayleigh damping parameters for the finite element analysis of wave propagation in soils. The least‐squares method was first used in Bornitz's equation to calculate the absorption coefficients of soils. Afterward, the best‐fit Rayleigh damping parameters were obtained using those coefficients in the least‐squares scheme again. Both three‐dimensional finite element analyses and field experiments were performed to validate the accuracy of this method. The comparison between experimental and finite element results demonstrates that the accuracy of this least‐squares method is acceptable. Copyright © 2007 John Wiley & Sons, Ltd.     

THE COLD AND HOT DAMAGES TO THE CITRUS IN THE THREE GORGES AREA OF THE CHANGJIANG RIVER

ＴＨＥＣＯＬＤＡＮＤＨＯＴＤＡＭＡＧＥＳＴＯＴＨＥＣＩＴＲＵＳＩＮＴＨＥＴＨＲＥＥＧＯＲＧＥＳＡＲＥＡＯＦＴＨＥＣＨＡＮＧＪＩＡＮＧＲＩＶＥＲＣｈｅｎＺｈｅｎｇｈｏｎｇ（陈正洪）；ＹａｎｇＨｏｎｇｑｉｎｇ（杨红青）；ＮｉＧｕｏｇｕ（倪国裕）（Ａｇｒｏ...     

BPL长波授时信号质量的分析

利用CsSync1000型接收机的输出数据，分析了BPL信号在接收点的质量，还将该接收机的GRI与主钟（CSAO）1PPS比较，给出了接收时间内BPL发射系统时延变化范围。分析结果表明，BPL发播控制具有较好的短期和中期稳定性能。为进一步提高发播时间控制的稳定性，需要采用新的控制方法和控制设备。