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Progress and prospects in Chinese Antarctic surveying, mapping and remote sensing studies

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Advances in Polar Science 2012年第1期23卷 1-8页

作者： e Dongchen ZHANG Shengkai Chinese Antarctic Center of Surveying and Mapping Wuhan University Wuhan 430079 China Key Laboratory of Polar Surveying and Mapping SBSM Wuhan 430079 China

Antarctic surveying, mapping and remote sensing is one of the important aspects of the Chinese Antarctic geoscience research program that stretch back over 25 years, since the first Chinese National Antarctic Research expedition （CHINARe） in 1984. During the 1980＇s, the geodetic datum, height system and absolute gravity datum were established at the Great Wall and Zhongshan Stations. Significant contributions have been made by the construction of the Chinese Great Wall, Zhongshan and Kunlun Stations in Antarctica. Geodetic control and gravity networks were established in the King George Islands, Grove Moun- tains and Dome Argus. An area of more than 200 000 km2 has been mapped using satellite image data, aerial photogrammetry and in situ data. Permanent GPS stations and tide gauges have been established at both the Great Wall and Zhongshan Stations. Studies involving plate motion, precise satellite orbit determination, the gravity field, sea level change, and various GPS applications for atmospheric studies have been carried out. Based on remote sensing techniques, studies have been undertaken on ice sheet and glacier movements, the distributions of blue ice and ice crevasses, and ice mass balance. Polar digital and visual mapping tech- niques have been introduced, and a polar survey space database has been built. The Chinese polar scientific expedition manage- ment information system and Chinese PANDA plan display platform were developed, which provides technical support for Chi- nese polar management. Finally, this paper examines prospects for future Chinese Antarctic surveying, mapping and remote sens- ing.

关键词： Antarctic geodesy remote sensing geographic information system digital mapping

COOPeRATION BeTWeeN CHINA AND LATIN AMeRICA WITHIN THe eXTeNDeD OBOR INITIATIVe:A CASe STUDY ON RAILWAY INFRASTRUCTURe

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Contemporary World 2018年第4期 24-29页

作者： jORGe e.MALeNA Contemporary China Studies(Universidad del Salvador-Buenos Aires Argentina) Chairman China Working Group(Argentine Council for International Relations)

The People＇s Republic of China （hereafter PRC） has been a strategic partner for the Latin American and Caribbean region, as revealed by the unceasing efforts made by both parties and as displayed in China＇s Policy Papers on Latin America and the Caribbean （LAG）, published in 2008 and 2016. Both LAC are significant axes for carrying out China＇s comprehensive opening up policy In particular, since the beginning of the 21st century, with the steady deepening of economic globalization, the trade and financial relations between China and Latin America have achieved unparalleled leap-forward growth.

关键词：拉丁美洲中国对外贸易经济合作

卒中后“偏移者”:自然史以及与运动功能恢复的关系

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世界核心医学期刊文摘（神经病学分册） 2005年第5期1卷 57-58页

作者： Danells C.j. Black S.e Gladstone D.j. McIlroy W.e. 高方 Grad. Dept. of Rehab. Science University of Toronto 500 University Ave Toronto Ont . M5G 1V7 Canada Dr.

Background and Purpose-Patients with hemiparetic stroke have impaired balan ce control. Some patients (“ pushers” ) are resistant to accepting weight on a nd actively “ push” away from the nonparetic side. This research identified p ushers from stroke patients with moderate to severe hemiparesis and examined lon gitudinal changes in symptoms, level of impairment, and functional independence. Methods -Prospective sample of hemiparetic stroke patients (n=65) located in Toronto, Canada. Detailed clinical assessments were performed within 10 days pos tonset, at 6 weeks, and at 3 months. Results -At 1 week after stroke, 63% of patients demonstrated features of pushing. In 62% of pushers, symptoms resolv ed by 6 weeks, whereas in 21% , pushing symptoms persisted at 3 months. Motor r ecovery and functional abilities at 3 months were significantly lower among the pushers compared with the nonpushers. Pushers also had a significantly longer ho spital length of stay (89 days versus 57 days). It is noteworthy that motor and functional recovery improved significantly over the 3-month study period for b oth pushers and nonpushers. Conclusions -Identification of stroke patients wit h pushing symptoms has prognostic implications for recovery. In light of this po tential recovery, rehabilitation specialists need to refine treatment approaches for the pushers to further improve functional outcome.

关键词：运动功能恢复自然史卒中发作临床评估平衡功能受损轻度偏瘫无偏功能损伤康复专家周和

利用沉积记录精确约束印度-亚洲大陆碰撞时间与过程

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中国科学：地球科学 2017年第3期47卷 261-283页

作者：胡修棉王建刚安慰 eduardo GARZANTI 李娟南京大学内生金属矿床成矿机制研究国家重点实验室南京大学地球科学与工程学院南京210023 中国科学院地质与地球物理研究所北京100029 合肥工业大学资源与环境工程学院合肥230009 Department of earth and environmental Sciences Universita di Milano-BicoccaMilano 20126Italy

精确约束印度-亚洲初始碰撞时间对于认识喜马拉雅造山过程、青藏高原隆升机制及其对环境、气候和生物的效应具有重要的意义.本文基于对西藏雅鲁藏布缝合带两侧沉积记录的研究,对印度-亚洲大陆初始碰撞时间研究进行了总结和评述,探讨了印... 详细信息

精确约束印度-亚洲初始碰撞时间对于认识喜马拉雅造山过程、青藏高原隆升机制及其对环境、气候和生物的效应具有重要的意义.本文基于对西藏雅鲁藏布缝合带两侧沉积记录的研究,对印度-亚洲大陆初始碰撞时间研究进行了总结和评述,探讨了印度-亚洲大陆初始碰撞的穿时性,重建了大陆碰撞的沉积演化.在接受以大陆间洋壳消失、陆壳-陆壳初始接触作为初始碰撞定义的前提下,利用两种方法:(1)缝合带附近深水浊积岩物源区由印度物源向亚洲物源转变的时间,(2)喜马拉雅欠充填前陆盆地启动在缝合带两侧造成的沉积环境突变或不整合的时间,精确限定印度-亚洲大陆初始碰撞时间为古新世中期((5 9±1)Ma).从喜马拉雅造山带来看,真正的初始碰撞时间比正常海相沉积结束要早20~25Ma,而磨拉石出现比初始碰撞要晚30~40Ma.基于特提斯喜马拉雅古近系沉积记录,印度-亚洲大陆初始碰撞在喜马拉雅中部和西部不存在明显的穿时性.本文从喜马拉雅地区的沉积记录角度出发,将喜马拉雅造山作用划分为四个阶段:(1)始喜马拉雅初始阶段,古新世中期-早始新世(59~52Ma),初始碰撞发生,同碰撞盆地存在深海环境,印度大陆一侧发育碳酸盐缓坡;(2)始喜马拉雅早期阶段,始新世早-中期(52~41Ma或35Ma),以发育残留的浅海沉积为特征,新特提斯海湾自西向东逐渐消亡;(3)始喜马拉雅晚期阶段,始新世末期-渐新世(41~26Ma),整个喜马拉雅和藏南地区缺乏沉积作用;(4)新喜马拉雅早期阶段,渐新世末期-早中新世(2 6~17Ma),喜马拉雅隆升,陆相磨拉石快速堆积,沿缝合带东西向发育雅鲁藏布江和印度斯河.

关键词：印度-亚洲大陆碰撞初始碰撞时间喜马拉雅造山带西藏喜马拉雅沉积记录

Feasibility analysis of WDM links for radar applications

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Defence Technology（防务技术） 2015年第1期11卷 76-84页

作者： D.MeeNA FReDY FRANCIS K.T.SARATH e.DIPIN T.SRINIVAS Applied Photonics Lab ECE Department Indian Institute of Science(IISc) electronics and Radar Development establishment (LRDe) DRDO(Ministry of Defence) Bangalore India Model engineering College Thrikkakara Cochin India

Active phased array antennas enhances the performance of modern radars by using multiple low power transmit/receive modules in place of a high power transmitter in conventional radars. Fully distributed phased array radars demand the distribution of various signals in radio frequency(RF) and digital domain for real time operation. This is normally achieved through complex and bulky coaxial distribution networks. In this work, we intend to tap the inherent advantages of fiber links with wavelength division multiplexed(WDM) technology and a feasibility study to adapt these links for radar applications is carried out. This is done by analysing various parameters like amplitude, delay, frequency and phase variation response of various radar waveforms over WDM links. This also includes performance evaluation of non-linear frequency modulation(NLFM) signals, known for better signal to noise ratio(SNR) to specific side lobe levels. NLFM waveforms are further analysed using pulse compression(PC) technique. Link evaluation is also carried out using a standard simulation environment and is then experimentally verified with other waveforms like RF continuous wave(CW), pulsed RF and digital signals. Synchronization signals are generated from this variable duty cycle digital signals during real time radar operation. During evaluation of digital signals, variable transient effects for different duty cycles are observed from an amplifier configuration. A suppression method is proposed to eliminate this transient effects. Further, the link delay response is investigated using different lengths of fiber spools. It can be inferred from the experimental results that WDM links are capable of handling various signals significant to radar applications.

关键词： WDM Radar RF over fiber eDFA transient Delay CW Pulsed CW NLFM

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动态规划原理基本分析及计算方法第1版

1984年

作者：（美）拉森（R.e.Larson）（美）j.L.卡斯梯陈伟基等译

来源：汇雅图书（南通市图书馆... 评论

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作者： (美)史蒂文·j. 斯坦(Steven j. Stein) (美)霍华德·e. 布克(Howard e. Book) (美)克罗尔·卡诺伊(Korrel Kanoy)

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***-2WAY式远程控制系统的特点和应用实例

智能建筑电气技术 2008年第4期2卷 77-79页

作者：高桥贤松下电工株式会社

松下电工为了将本公司的照明控制系统接入互联网而开发了Web server unit这一嵌入式模块。本文就Web server unit的特点和应用实例进行了介绍。

关键词： eMIT Full2way照明控制系统 web服务器单元图形用户界面多语言

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津巴布韦太古宙金矿床的地质环境

国外前寒武纪地质 1985年第2期 83-97页

作者： R.P.Fostar j.e.Wilson 李上森

引言金是律巴布韦经济的重要方面,1981年共回收金11,691千克,使津巴布韦成为资本主义国家的第11个最大的黄金产地。自1982年第一次建立黄金产量记录以来,金总产量为1,402,000千克(45,073,000唡)。大约6,000个矿山已公布有一些金产量,这... 详细信息

引言金是律巴布韦经济的重要方面,1981年共回收金11,691千克,使津巴布韦成为资本主义国家的第11个最大的黄金产地。自1982年第一次建立黄金产量记录以来,金总产量为1,402,000千克(45,073,000唡)。大约6,000个矿山已公布有一些金产量,这些矿山中仅公布有一些金产量,但这些矿山中仅有290个产金大于311千克。1981年间,518个矿山公布了金产量,仅11个矿山产金超过300千克。

关键词：金矿床贵金属矿床岩石地层单位地方性地层单位绿岩带津巴布韦南罗得西亚太古宙太古代前寒武纪