基于马克思主义文化观的测绘工程文化建设的思考     

王文福  郭树东  马俊海 《测绘与空间地理信息》2011,34(4):10-12,16

马克思主义文化观是对文化发展普遍规律的深刻揭示,有助于我们认识人在文化建设中的主体地位,真正把人作为文化建设的目的和中心,为测绘工程文化的建设指明了方向。文章基于马克思主义的文化观,从文化层面分析了测绘工程文化的组成和结构,用文化整体性的观点观察、分析和思考了测绘工程文化建设中面临的各种问题,提出了测绘工程文化建设的基...  相似文献   

Research and application of role theory in ocean carbon cycle ontology construction     

Haipeng Jia  Jing Xiong  Jianliang Xu  Jipeng Wang 《中国海洋大学学报(英文版)》2014,13(6):979-984

  相似文献   

基于WCF的矢量数据服务安全机制的设计与实现     

刘灿由  张斌  郭黎  张威 《地理信息世界》2011,9(2):63-68,79

21世纪计算机技术和网络技术的飞速发展将地理信息产业带进了一个崭新的领域.地理空间信息服务成为解决数据异构、实现资源共享的有效途径.然而,随着地理信息服务在各领域的推广应用,传统分布式技术在开发地理信息网络服务中所面临的安全问题逐渐突显出来,已严重制约了网络服务在地理信息产业的发展.针对矢量数据服务在数据传输、服务操作...  相似文献   

物探在甘肃铅锌矿产找矿中的作用和效果          下载免费PDF全文

李立新  李百祥 《甘肃地质》2014,23(4):63-68

本文根据甘肃在不同地质构造、不同地质时代、不同系列和类型产出的铅锌矿,具有共同的物性（低电阻率、高极化率和高密度、磁性等）特征和找矿标志,探讨了利用直接找矿和间接找矿以及探测目的物和探测目标物的勘查技术在不同类型铅锌矿找矿中的作用,并以部分实例展示出高精度重力、磁测、综合电法和电磁法等物探方法取得的找矿效果。  相似文献   

Trophic ecology of bottom fishes assemblage along coastal areas of Thailand     

Sukree Hajisamae 《Estuarine, Coastal and Shelf Science》2009

Food preferences, feeding attributes, trophic guilds, and ontogenetic changes in diet compositions of 45 fish species collected along coastal waters in the southern areas of the South China Sea, Thailand were examined. Most species had high food intake and fed on specific ranges of food types. Shrimp was the most important food (31.7%), followed by calanoid copepod (16.8%), fish (12.7%) and gammarid amphipod (8.3%). These fishes can be categorized into six different trophic guilds and further divided into four categories namely; piscivore, zooplanktivore, zoobenthivore and miscellaneous/opportunist. Numbers of feeding guilds at each depth vary between four and five. Four of these are consistently found throughout the year at all zones; shrimp predator, piscivore, calanoid copepod feeder and a combination of polychaete and other food feeders. Ontogenetic studies indicate that fishes are more likely to group according to species rather than size. This scientific information is important when examining the complex association between fishes and identifying groups of species using similar resources.  相似文献   

基于客体扩展的RBAC模型研究     

刘波  文军 《成都信息工程学院学报》2006,21(3):334-338

提出了一种扩展客体层次的权限策略模型,通过重新定义客体域、扩展安全定义和操作规则,更加适应多级复杂客体权限系统的要求.  相似文献   

浅析大学校园规划在校园文化建设中的作用     

陈于仲  饶华  谢清明  黄春玲 《成都信息工程学院学报》2007,22(5):665-667

大学校园规划是校园文化的物质基础和载体,通过对成都信息工程学院航空港校区规划建设的介绍,阐述了大学校园规划在校园文化建设中的重要作用,指出高校要重视环境育人的功能,营造浓厚的校园文化氛围.  相似文献   

桓仁—宽甸地区金、有色金属成矿规律     

王文清  罗守文  邵会文 《国土资源》1993,(1)

桓仁—宽甸金、有色金属矿比集中区是华北地台北缘太平洋成矿带的重要成矿区。通过区域成矿地质背景和控矿因素的分析,划分了六种区域成矿类型及两大成矿系列,建立了区域多元成矿模式。沉积变质改造型铅锌、金、铜矿产受辽吉古裂谷含矿岩系中的特定层位控制,成矿物质来源于海底火山作用。中生代有色金属矿产受燕山晚期不同阶段特定岩性控制,第一阶段受张剪性断裂控制的中性、中酸性侵入岩与铜(铁)、金关系密切;第二阶段的中酸性脉岩控制部分铅锌、铜矿床;第三阶段的中酸性浅成、超浅成侵入体与铝、铅锌、铜矿有关。中寒武世地层可提供部分矿质,并成为接触交代型矿床的最佳赋矿层位。  相似文献   

山东招远灵山-北截断裂的重新厘定及其意义   总被引：2，自引：0，他引：2       下载免费PDF全文

于晓飞  孙丰月  李碧乐  孙振佐  武际春 《地质找矿论丛》2004,19(4):223-227,284

灵山-北截断裂带控制了众多金矿床的工业矿体,灵北断裂既导矿又容矿.灵北断裂的构造控矿样式有"绳结"和"结环"状两种,灵北断裂带上4个金矿床等距分布,从南向北依次为七厘山、灵山沟、魏家沟、北截等金矿床,呈4～5km分布.在灵山沟矿区发现了SN向诸流河断裂,重新厘定了灵北断裂的空间分布,确定、命名了黄埠岭-凤凰山断裂,认为它与灵北断裂为斜列关系,二者同级别、同规模、同性质,而灵北断裂的南延部分则经过七厘山和灵山冯家进入莱州境内.  相似文献   

Structural controls on carbonate-hosted Pb–Zn mineralization in the Dongmozhazhua deposit,central Tibet     

《Ore Geology Reviews》2017

Fault zones control the locations of many ore deposits, but the ore-forming processes in such fault zones are poorly understood. We have studied the deformation and ore textures associated with fault zones that controlled the lead–zinc mineralization of the Dongmozhazhua deposit, central Tibet, ∼100 km southwest of Yushu City. Geological mapping shows that the structural framework of the Dongmozhazhua area is defined by NW–SE-trending reverse faults and superposed folds that indicate at least two stages of deformation. The first stage is characterized by tight nearly E–W-striking folds that formed during the closure of the Jinshajiang Paleo-Tethyan Ocean in the Triassic. The second stage of deformation produced NW–SE-trending reverse faults and related structures of the Fenghuoshan–Nangqian fold-and-thrust belt associated with India–Asia collision in the late Eocene to Oligocene. Scanline surveys along the ore-controlling fault zones show an internal structure that comprises a damage zone, a breccia zone with clasts that have become rounded, and a breccia zone with lenticular clasts, and this complex architecture was formed during at least two compressional substages of deformation. The Pb–Zn mineralization in the Dongmozhazhua area occurs exclusively close to NW–SE-trending reverse fault zones. Microtextural observations reveal that mineralization occurred as veinlets and disseminated blebs in limestone clasts, and as continuous bands and cements in fractured rocks. Cataclastic sulfide grains also can be seen in the matrix of some fault zones. The types of mineralization differ with structural position. The fillings of the ore-bearing veinlets typify the products of hydraulic fracture and both types of mineralization took place concurrently with regional contraction. We consider, therefore, that the ore-bearing fluids in the Dongmozhazhua deposit were concentrated in fault zones during regional compression and that the ore minerals were precipitated during hydraulic fracturing of host rocks. Subsequent fault activity pulverized some pre-existing sulfide material into cataclastic grains in the matrix of a tectonic breccia that developed in the same faults.  相似文献