共查询到20条相似文献，搜索用时 140 毫秒
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利用敦煌绿洲气象站1955年-2010年日平均气温资料,采用气候倾向率、Mann-Kendall检验、相关分析及Morlet小波功率谱等方法分析了研究区胡杨生长季对全球气候变化的响应。结果表明：近56a来,研究区胡杨年生长季有开始日提前,终止日推后,年生长季天数延长的趋势;展叶始日有提前趋势,叶黄初日有推后趋势。胡杨生长季开始日、展叶始日分别与3月和4月平均气温呈负相关关系,胡杨生长季终止日、生长期天数及叶黄初日分别与10月、3月-11月及8月-9月平均气温呈正相关关系。胡杨生长季开始日、终止日、生长季天数、展叶期及叶黄初日均具有多个突变,存在3.77~8.33a的短尺度周期,这反映出研究区胡杨生长季对气候变化响应十分敏感。 相似文献
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利用西藏色季拉山地区东、西坡2个气象站点1961～2010年近50年的逐日最低气温资料,以≤0℃最低气温为霜冻指标,采用气候倾向率、累积距平、信噪比和R／S分析等现代气候统计方法,分析了东、西坡初霜日、终霜日、无霜期和霜冻日气候变化特征。结果表明：（1）近50年东、西坡初霜日以1．3～1．5d／10a的速度稚迟,终霜日平均每10年提早1．5～5．1d,无霜期每10年增加2．8～6．6d,而霜冻日每10年减少5．8～6．4d;东坡的增减幅度要大于西坡。（2）20世纪60至80年代东、西坡初霜来得早、终霜结束得晚、无霜期短、霜冻日多;90年代至21世纪最初的10年,东、西坡均表现为初霜日来得迟、终霜日结束得早、无霜期长、霜冻日少的年代际变化特征。（3）特少霜冻日发生频数为8～10次,主要出现在21世纪初,以西坡较多。（4）东、西坡初霜日、终霜日、无霜期和霜冻日均未出现气候突变现象。（5）东、西坡初霜日Hurst指数小于0．5,说明未来推迟的幅度可能会变小;而终霜日、无霜期和霜冻日的Hurst指数均大于0．5,表明未来东、西坡终霜日仍将趋于提早态势、霜期仍将趋于延长,而霜冻日仍将表现为减少趋势。 相似文献
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《中国科学院院刊(英文版)》2002,16(4)
The Northeast Institute of Geography and Agricultural Ecology, a new CAS research body inaugurated in March 2002,comes from the merger of two former CAS research affiliates:Changchun Institute of Geography and Heilongjiang Institute of Agricultural Modernization in Harbin. 相似文献
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伟大的长征铸就了伟大的长征精神,长征精神和医德精神有着内在的价值共通。在医学类高校中培育新时代仁心仁术的医者之德,长征精神不失为出色的叙事文本。可以通过解释长征精神的内在含义来分析它对医德培育的独特精神性价值和工具性价值,联通长征精神和医德培育研究的内在价值和底层逻辑。 相似文献
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Mark Coeckelbergh 《Ethics and Information Technology》2007,9(3):219-231
Many philosophical and public discussions of the ethical aspects of violent computer games typically centre on the relation
between playing violent videogames and its supposed direct consequences on violent behaviour. But such an approach rests on
a controversial empirical claim, is often one-sided in the range of moral theories used, and remains on a general level with
its focus on content alone. In response to these problems, I pick up Matt McCormick’s thesis that potential harm from playing
computer games is best construed as harm to one’s character, and propose to redirect our attention to the question how violent
computer games influence the moral character of players. Inspired by the work of Martha Nussbaum, I sketch a positive account
of how computer games can stimulate an empathetic and cosmopolitan moral development. Moreover, rather than making a general
argument applicable to a wide spectrum of media, my concern is with specific features of violent computer games that make
them especially morally problematic in terms of empathy and cosmopolitanism, features that have to do with the connections
between content and medium, and between virtuality and reality. I also discuss some remaining problems. In this way I hope
contribute to a less polarised discussion about computer games that does justice to the complexity of their moral dimension,
and to offer an account that is helpful to designers, parents, and other stakeholders.
An earlier version of this paper was presented at the ACLA 2006 conference in Princeton, 25 March 2006. 相似文献
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贵州水城位于川滇黔集中连片特殊困难的乌蒙山区。这里曾是国家扶贫开发工作重点县,2016年底,贫困发生率达18.9%。作为水城的定点帮扶单位,中国科学院在脱贫攻坚阶段围绕当地生态环境及资源禀赋特点和产业基础,推进大批科技成果转移转化,因地制宜帮助水城打造特色产业,助推水城于2020年3月顺利退出贫困县序列。2020年,水城踏上了向乡村振兴的迈进之路。2023年,笔者团队赴水城调研后发现,中国科学院继续秉持科学精神,助推水城升级产业、提质增效,让水城在振兴之路上行稳致远。 相似文献
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《中国科学院院刊(英文版)》2004,18(3):155-155
Prof. Zhou Qi, a researcher of the CAS Institute of Zoology, was awarded the 2004 genOway Prize for Transgenic Technologies at the 5th TransTech-Meeting held from March 14 to 16at Uppsala, Sweden. 相似文献
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《中国科学院院刊(英文版)》2008,22(2):78-78
Arecent study published in 20 March issue of the prestigious journal Nature by Dr. LIU Chuanzhou from the CAS Institute of Geology ＆ Geophysics and his co-workers challenges the conventional wisdom that the Earth＇s upper mantle is homogeneous. 相似文献
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《中国科学院院刊(英文版)》2005,19(2):90-90
With the support of the National High-technology Development Program, scientists and engineers from the CAS Institute of Electrical Engineering recently completed a study on key technologies for megawatt-level building-integrated and grid-connected photovoltaic (PV)power generation. The project was checked and accepted by an expert panel on March 25. 相似文献
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Song Jianlan 《中国科学院院刊(英文版)》2002,16(1)
Chinese scientists have succeeded in cloning a colony of cattle from fully differentiated somatic cells. The news was announced jointly by the Chinese Academy of Sciences (CAS), National Natural Science Foundation of China (NSFC) and the government of Shandong Province at a press conference held on March 7, 2002. 相似文献
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丁琼洁 《科技成果管理与研究》2008,(6):66-68
文章根据2007年1月到2008年3月全国部分具代表性的大中城市的房价统计数据,分析了房价下降的四个原因：成本推动、需求变动、政府政策和消费者预期。同时,站在房地产企业的角度,针对目前房地产市场的行情,提出了企业应对市场变化的四条具体措施,即加强和改进品牌建设、内部管理、外部融资和产品品质四方面的工作。 相似文献