c****s 发帖数: 5892 | 1 近一段时期,加拿大北极地区的安全利益问题在地理条件变化等因素的推动下重新浮现在公众面前,并且其未来走向依然无法预知。国际社会对日益紧缺的资源的争夺早已开始在北极地区上演,加拿大北极安全问题专家罗布休伯特(Rob Huebert)就曾说过:“全球气候变化、资源价格上涨、国际政治斗争以及不断取得的技术进步使北极地区的开发难度降低,因而也使其更加富有吸引力。”据《北极气候影响评估报告》(Arctic Climate Impact Assessment)预测,气候变化将会导致北极地区温度上升,北极海冰数量在每年夏季末期也会有所降低。这些条件促使北极日益成为国际活动的开放地区,被巨大经济利益前景所吸引的各种外部势力也越来越多地参与北极事务。因此,加拿大保卫北方地区国家主权和安全的能力将受到更加严峻的考验。资源竞争、季节性航道以及移民问题都增加了北方地区爆发冲突的可能性,此外加拿大与其环北极圈邻国悬而未决的边界争端因北极问题的国际化而更加复杂,而且这还有可能对北方地区的人口结构产生巨大影响。
广袤而且事实上并不设防的北极地区为一些不法份子以及潜在的敌对势力创造了许多有利条件。由于缺乏适度的监管设施... 阅读全帖 |
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a***s 发帖数: 12296 | 2 海上浮动核电站的技术原理其实并不神秘,只是将原本建造在陆地上的核电站安装在船舶平台上。
近日有自媒体消息称,中国计划为南海岛礁建造20座海上核电站,在强化对南海地区的实际控制时,全力打通欧亚大陆和北极之间的北方海上航道。南海“仲裁”案公布
裁决结果、中国严正表明在南海问题上的政策立场之际,这则消息的确振奋人心,但语焉不详、内容失真,可以说是一条“标题党”新闻。
记者了解,中国核电界、船舶界确实正在携手推进海上核动力平台建造,中国最大的造修船集团之一中船重工也的确有先后批量建造近20座海洋核动力平台的计划,但根据中船重工719所副总工程师朱涵超此前的公开表态,这近20座海洋核动力平台针对的是“满足渤海油田的能源需求”,而非自媒体标题党所称的“中国为南海岛礁建造20座海上核电站”。
海上浮动核电站的技术原理其实并不神秘,只是将原本建造在陆地上的核电站安装在船舶平台上。但是,由于陆地和海上条件差异很大,相关的技术要求不尽相同,海上浮动核电站的设计、建造和运行都面临特殊的技术难题。这种小型的、可移动式的海上核电站将陆上核电站的缩小版安装在船舶上,既可为偏远岛屿供应安全、有效的能源供给,也可为远... 阅读全帖 |
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p******u 发帖数: 14642 | 3
吃老本也不带这么蚜蠛蝶的老本啊
Planned Russian Space Launches
2011
Date – Satellite(s) – Rocket/Upper stage – Cosmodrome – Time
January 28 – Progress M-09M (No. 409) – Soyuz-U – Baikonur 1/5 – 01:43
UTC
February 10 – Geo-IK-2 – Rokot/Briz-KM – Plesetsk 133/3
middle of February – Sich-2, NX, NigeriaSat-2, Rasat, Edusat, AprizeSat-5,
AprizeSat-6, BPA-2 – Dnepr – Dombarovskiy 13
March 15 (TBD) – SkyTerra 2 – Proton-M/Briz-M – Baikonur 200/39
March 19 (TBD) – Kanopus-V No. 1, BKA, MKA-FKI No. 1 (Zond-PP) (TBD), A... 阅读全帖 |
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P*****t 发帖数: 4978 | 4 英国搞的世界大学声望排名,像往常一样,拔高英国跟亚太地区的大学。美国这边的感
觉也有点扯,umass竟然排19。
1 Harvard University
2 Massachusetts Institute of Technology U
3 University of Cambridge
4 University of California Berkeley
5 Stanford University
6 University of Oxford
7 Princeton University
8 University of Tokyo
9 Yale University
10 California Institute of Technology
11 Imperial College London
12 University of California Los Angeles ... 阅读全帖 |
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l****o 发帖数: 2909 | 5 Computer Science & Information Systems Rankings 2011
Rank Title Country Academic Employer Citations Score
1 Massachusetts Institute of Technology (MIT) United States 100 94.1 58
85.6
2 Stanford University United States 91.4 81.7 73.5 83.1
3 University of Cambridge United Kingdom 77.8 100 47.9 75.5
4 University of California, Berkeley (UCB) United States 85.7 72.4 64.6
75.4
5 Harvard University United States 63.9 94.4 59.2 71.6
6 University of Oxford ... 阅读全帖 |
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p*****c 发帖数: 20445 | 6 合并俄罗斯科学院,俄罗斯农业科学院和俄罗斯医学科学院;剥离科学院的房地产管理
权;取消通讯成员和院士的区别。。。
话说中国现在的这个科研体制和俄罗斯完全一样啊。。。当然改革得早一些,现在中科
院研究所应该比俄罗斯科学院的研究所效率高得多。。。
New Law Would Dilute and Diminish Science Academy
Vladimir Pokrovsky
+ Author Affiliations
Vladimir Pokrovsky is a writer in Moscow.
MOSCOW—When some of the biggest names in Russia's scientific community
elected Vladimir Fortov to lead the Russian Academy of Sciences (RAS) this
spring, they had great expectations that the physicist would infuse the
august institution with fre... 阅读全帖 |
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发帖数: 1 | 7 【 以下文字转载自 Faculty 讨论区 】
发信人: beefnoodles (一碗牛肉面), 信区: Faculty
标 题: 2006年清华校友中的新faculty 50人[不完全版]
发信站: BBS 未名空间站 (Tue Nov 28 00:23:16 2006)
南加州大学:2人
马清运
南加州大学建筑学院院长(10月5日正式宣布)
dean of the USC School of Architecture and holder of the Della and Harry
MacDonald Dean's Chair in Architecture
1988年毕业于清华大学建筑系,Upenn建筑系硕士
http://arch.usc.edu//page_3082.jsp
Liang Chen
Assistant Professor of Biological Sciences
University of Southern California
http://www.usc.edu/schools/college/faculty/faculty1012741.html... 阅读全帖 |
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b*********3 发帖数: 1709 | 8 The present outbreak of lower respiratory tract infections, including
respiratory distress syndrome, is the third spillover, in only two decades,
of an animal coronavirus to humans resulting in a major epidemic. Here, the
Coronavirus Study Group (CSG) of the International Committee on Taxonomy of
Viruses, which is responsible for developing the official classification of
viruses and taxa naming (taxonomy) of the Coronaviridae family, assessed the
novelty of the human pathogen tentatively named 2... 阅读全帖 |
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b*********3 发帖数: 1709 | 9 The present outbreak of lower respiratory tract infections, including
respiratory distress syndrome, is the third spillover, in only two decades,
of an animal coronavirus to humans resulting in a major epidemic. Here, the
Coronavirus Study Group (CSG) of the International Committee on Taxonomy of
Viruses, which is responsible for developing the official classification of
viruses and taxa naming (taxonomy) of the Coronaviridae family, assessed the
novelty of the human pathogen tentatively named 2... 阅读全帖 |
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b*********3 发帖数: 1709 | 10 The present outbreak of lower respiratory tract infections, including
respiratory distress syndrome, is the third spillover, in only two decades,
of an animal coronavirus to humans resulting in a major epidemic. Here, the
Coronavirus Study Group (CSG) of the International Committee on Taxonomy of
Viruses, which is responsible for developing the official classification of
viruses and taxa naming (taxonomy) of the Coronaviridae family, assessed the
novelty of the human pathogen tentatively named 2... 阅读全帖 |
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c******g 发帖数: 4889 | 14 读书去哪儿不好,非去俄罗斯?那里旅旅游还可以。 |
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y***m 发帖数: 7027 | 16 http://scienceroom.net/top-100-universities-by-reputation-2011-
英国《泰晤士报高等教育副刊》10日发布2011年世界大学学术声誉排行榜,美国哈佛大
学位列榜首,中国清华大学和北京大学跻身百强,分列第三十五和第四十三位。
美国大学在排行榜上独占鳌头,夺得前10名中的7席,并有45所大学进入百强。英
国是第二大赢家,剑桥大学和牛津大学名列十强,总共12所英国大学进入百强。日本大
学的表现也很抢眼,5所大学跻身百强,其中东京大学名列第八。
首次发布的世界大学学术声誉排行榜是《泰晤士报高等教育副刊》世界大学排行榜
的“子榜”,是根据各大学在教学和科研领域的表现确定的。而一年一度的《泰晤士报
高等教育副刊》世界大学排行榜的评定指标多达13个,除教学和科研之外,还包括论文
引用情况、科研成果转化收入以及国际化程度等。
《泰晤士报高等教育副刊》主编菲尔·巴蒂说,世界大学学术声誉排行榜是在对大
学学术表现进行了迄今为止最全面的全球性调查之后排定的。他指出,在国际人才市场
对学生、学者和学校管理人员的争夺更为激烈的今天,大学享有良好的学术声... 阅读全帖 |
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a**********u 发帖数: 28450 | 17 Charged-particle multiplicities in pp interactions at View the MathML source
measured with the ATLAS detector at the LHCstar, open, star, openstar, open
121a, 121b, S. Zenz14, D. Zerwas114, G. Zevi della Porta57, Z. Zhan32d, H.
Zhang83, J. Zhang5, Q. Zhang5, X. Zhang32d, L. Zhao107, T. Zhao137, Z.
Zhao32b, A. Zhemchugov65, S. Zheng32a, J. Zhong149, z, B. Zhou87, N. Zhou34,
Y. Zhou149, C.G. Zhu32d, H. Zhu41, Y. Zhu170, X. Zhuang98, V. Zhuravlov99,
B. Zilka143a, R. Zimmermann20, S. Zimmermann20, S... 阅读全帖 |
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l****o 发帖数: 2909 | 18 【 以下文字转载自 Military 讨论区 】
发信人: laonuo (laonuo), 信区: Military
标 题: Computer Science world Rankings 2011
发信站: BBS 未名空间站 (Tue Apr 5 05:09:04 2011, 美东)
Computer Science & Information Systems Rankings 2011
Rank Title Country Academic Employer Citations Score
1 Massachusetts Institute of Technology (MIT) United States 100 94.1 58
85.6
2 Stanford University United States 91.4 81.7 73.5 83.1
3 University of Cambridge United Kingdom 77.8 100 47.9 75.5
4 University of Cali... 阅读全帖 |
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G****n 发帖数: 145 | 19 ALGORITHMICA, 2012; 62 (): 630
The Steiner Ratio Gilbert-Pollak Conjecture Is Still Open
Ivanov, AO; Tuzhilin, AA
Tuzhilin, AA (reprint author), Moscow MV Lomonosov State Univ, Fac Mech &
Math, Moscow, Russia.
分享到: 0
Abstract
The aim of this note is to clear some background information and references
to readers interested in understanding the current status of the Gilbert-
Pollak Conjecture, in particular, to show that A.O. Ivanov and A.A. Tuzhilin
were the first who understood the nature of the... 阅读全帖 |
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