排序方式： 共有29条查询结果，搜索用时 15 毫秒
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正2018年12月22日,中国地质学会主办的《地质学报》(英文版)、《地质学报》(中文版)和《地质论评》第40届编委会成立大会及进一步提升三刊质量讨论会在北京召开。中国地质学会常务副理事长兼秘书长李金发,三刊主编杨文采院士、侯增谦院士、杨经绥院士,三刊第40届副主编及编委金之钧院士、郝芳院士、李家彪院士等,三刊编辑部编辑以及中国地质学会秘书处工作人员等共120余人出席会议。中国地质学会副理事长兼常务副秘书长朱立新主持了三刊 相似文献
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《Marine Policy》2017
The International Whaling Commission's (IWC) Scientific Committee provides important advice to the IWC on a large variety of cetacean species, sub-species and populations and the issues affecting them. Cetaceans are facing increasing, non-whaling-related threats, and the Scientific Committee (SC), in accordance with the Commission's requests, has strengthened its conservation-oriented research work. A selection of the reports of the Scientific Committee from between 1986 and 2012 was assessed for its: (i) fundamental research; (ii) management; (iii) conservation; and (iv) administrative content, and to identify potential trends over time. Recommendations and their urgency were also examined, as implied from the language used by the SC in its reports. The analysis showed that the work of the Scientific Committee has increasingly been oriented towards conservation issues over the period reviewed, but at the same time this conservation work has received little funding. Increased support for conservation-related research projects is warranted to promote the long-term survival of cetaceans. Based on this review of the content and focus of the Committee reports, the analysis suggested that its issued advice be made clearer, whenever possible, and governments are urged to give due consideration to this science-based advice particularly when urgent conservation actions are needed. In addition, more consistent funding of the IWC's conservation-related research should be pursued to improve international conservation outputs regarding cetacean populations. 相似文献
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地震科技期刊作为地震科研成果及地震科技信息传播与交流的载体和平台,对促进地震科学的发展起着重要的作用。随着出版界体制机制改革的不断深入以及期刊出版的数字化、网络化和国际化,地震科技期刊面临着新的任务与挑战。面对新形势,从地震科技期刊生存发展应当引起注意的几个问题,尤其在地震科技期刊编辑人才队伍建设方面提出了一些意见和建议。认为,要将地震科技期刊做大做强,必须高度重视、加大力度扶持编辑人才队伍的建设。 相似文献
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Yundong Huang 《Stochastic Environmental Research and Risk Assessment (SERRA)》2009,23(4):507-516
When insufficient data are available for measuring operational risk faced by a financial institute, most of the models depending
on the probability theory are failure. Differing from that we use a probability distribution to depict random uncertainty,
in this paper we use a number to represent the naive uncertainty in a phase serving for operational risk identification. The
simplest form of the naive uncertainty model for measuring operational risk with multiple phases is the weighted mean with
the uncertainties. It is also valid when we have a rough judgment for the uncertainties with intervals or fuzzy values. In
this paper, we give a calculation case in lending operational risk to demonstrate the model validity. 相似文献
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To settle the difficulties of the shortage of oceanographic research vessels in our country, the National Natural Science Foundation Committee of China founded Oceanographic Research Vessel Sharing Plan in 2009. It is aimed at enhancing efficiency and optimization of the vessel resources,and coordinating the use demands of vessels for the different foundation projects and the efficient use of the research vessels. We have summarized the achievements made in the Plan from 2010 to 2014, as well as the use system of the research vessels sharing, the specific operating mode ,the organization and the management framework of the Plan. In the end, we put forward our suggestions on the improvement of the Plan after the primary analysis of the present situation of the sharing of the survey data and the existing problems. 相似文献
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Regional‐scale 40Ar–39Ar data presented in this paper reveal significant across‐strike and along‐strike age differences in the Committee Bay belt (CBb), Rae Province, Nunavut, Canada, that complement variations in observed monazite ages. 40Ar–39Ar hornblende ages are c. 1795, 1775, and 1750 Ma in the western, eastern and central parts of the Prince Albert Group (PAG) domain respectively. The migmatite domain and Walker Lake intrusive complex are characterized by c. 1750–1730 40Ar–39Ar hornblende ages without significant along‐strike variation. The 40Ar–39Ar data provide important constraints on the cooling history and on thermal modelling that elucidates the controls on diachroneity and metamorphic patterns within the belt. In the western CBb, prograde monazite growth occurred 26 ± 10 Myr earlier in the migmatite domain (1864 ± 9 Ma; peak P–T = 5 kbar?700 °C) than in the PAG domain (1838 ± 5 Ma; peak P–T = 5 kbar?580 °C). Calculations indicate that this earlier monazite growth results from tectonic thickening of higher heat productivity Archean lithologies in the migmatite domain, which undergoes more rapid prograde heating than the less radiogenetic and lower grade rocks of the PAG domain. Granite generation via biotite dehydration melting at 800 °C and 20 km depth is predicted to occur c. 1835 Ma, in agreement with geochronological constraints. The tectonic burial of crustal domains with contrasting radiogenic properties also explains the general congruence of lower to upper amphibolite facies metamorphic zones generated during the two main orogenic cycles (i.e. M2–D1 and M3–D2). The modelled timing of prograde monazite growth in the migmatite domain suggests that D2 tectonic thickening began at 1872 ± 9 Ma, some 8 ± 3 Myr before monzazite growth, coeval with the inferred time of collision of the Meta Incognita terrane with the southern Rae Province. Along‐strike diachroneity, reflected in 25 Myr younger monazite and 40Ar–39Ar hornblende ages in the eastern relative to the western PAG domain, cannot be accounted for by heat productivity contrasts along the belt. Instead the younger deformation and metamorphism in the eastern CBb was driven by its proximity to the eastern promontory of the Superior Province which collided with the Rae Province at c. 1820 Ma. The 40Ar–39Ar data presented here support the interpretation that the youngest monazite in the CBb crystallized at c. 1790 Ma in the central CBb when this part of the belt was downfolded into a gentle synformal structure while the western part of the belt cooled through 40Ar–39Ar hornblende closure. The results of this study illustrate the important influence of contrasting rock properties on the thermal evolution of orogenic belts and on the temporal record of this evolution. 相似文献
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BRIAN W BLOUET 《The Geographical journal》2004,170(4):322-329