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Time-and Frequency-Domain Analysis of Ice-Induced Displacement Responses Offshore Fixed Platforms

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China Ocean Engineering 1998年第4期13卷 365-373页

作者： Gao, Zhaojie Duan, Menglan China Classificat Soc Beijing 100006 Peoples R China

On the basis of ice- induced forced vibration model, ice- induced displacement responses of offshore fixed platforms are investigated in both time domain and frequency domain. The relationships of ice-induced displacement responses with ice breaking modes, ice acting directions and platform structures are analyzed and determined. The results lead to an important conclusion obtained for the first time that ice breaking frequency and the natural frequency of the first mode of the platform are the two main factors that dominate the degree of vibration. The present work provides a firm basis for both design and operation of fixed platforms against ice loading.

关键词： offshore fixed platform ice loading crushing bending buckling time domain frequency domain displacement power spectral density vibration

On the Culture Factor in the Translation of Political Literature

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中国翻译 2001年第3期22卷 30-32页

作者：程镇球北京东交民巷30号706室 100006

As in many other types of translation, culture plays an important part in the translation of political writings. This is of course a very general statement. And according to Edmund Keeley, professor of English and creative writing at Princeton University, 'any discussion of translation in broad terms is dangerous' ① Let's then avoid generalizations and get down to specifics by citing a couple of examples.

关键词：政治论文翻译理论文化内涵翻译方法

Technological Breakthrough and Domestic Substitution of Key Products Based on Asymmetric Competition:Taking the Integrated Circuit Industry as an Example

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Frontiers of Business Research in China 2023年第3期17卷 379-406页

作者： LIU Jianli LI Xianjun Institute of Industrial Economics Chinese Academy of Social SciencesBeijing 100006China

Integrated circuit is a typical key product in the digital economy *** external containment,breakthroughs in core technologies of integrated circuit are confronted with barriers of first movers in underlying technological ecology and with their threats of decoupling from the supply ***,China has various bottlenecks in the proprietary industrial ecosystem,and domestic substitution lacks effective overall ***,it is essential to apply the underlying logic of asymmetric competition and to leverage a relatively complete industrial system,abundant application scenarios,solid talent base,and the institutional advantages of the new system for mobilizing resources nationwide to break through in integrated circuit manufacturing technologyand in domestic *** such,it is necessary to further strengthen the top-level design,leverage the advantages of the new system for mobilizing resources nationwide to enhance the institutiona1lguarantee for domestic substitution of bottlenecks,and enhance basic research to consolidate the technological foundation for domestic ***,we should implement talent strategy to enhanceethe driving force of human resource for domestic substitution *** should also further opening-up and cooperation policy to create an open domestic substitution *** addition,we should increase counter-cyclical investment to nurture leaderssin asymmetric competition,and seize the demand window to drive domestic substitution with"epoch-making products."

关键词： key products technological catch-up domestic substitution asymmetric competition integrated circuit

A CLINICAL STUDY ON TCM DIFFERENTIATION OF SYMPTOMS AND SIGNS IN PREGNANCY HYPERTENSION SYNDROME

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Journal of Traditional Chinese Medicine 1996年第4期16卷 252-259页

作者：金有慧沙文萱高晓哲李恩棠 Li Entang Beijing Obstetrical and Gynecological Hospital Beijing 100006

An epidemiological investigation was made into the diagnostic types of 457 cases of pregnancy classified according to differentiation of symptoms and signs by traditional Chinese medicine (TCM) with the aim of finding out its relationship with pregnancy hypertension syndrome (PHS). The total occurrence rate of PHS was 36.8%. In early pregnancy, 65.9% of patients with deficiency of yin of the liver had a high rate of developing PHS, while in the intermediate stage, 61.6% of patients with deficiency of the spleen and exuberance of the liver were most liable to develop it. In 50 cases diagnosed and treated on the basis of TCM differentiation of symptoms and signs the incidence was reduced to be 20%. The changes of such biochemical indices as ACh, AChE, cholic acid and gastrin in different diagnostic types during pregnancy, as well as the effect of spleen-invigorating therapy on these indices in pregnancy with deficiency of the spleen were also observed.

关键词：李恩

Ice Induced Low Temperature Fatigue Crack Propagation in Offshore Structural Steel A131

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China Ocean Engineering 1998年第3期13卷 275-284页

作者： Duan, ML Gao, ZJ Liu, CT China Classificat Soc Beijing 100006 Peoples R China Chinese Acad Sci Inst Mech Beijing 100080 Peoples R China

To investigate the low temperature fatigue crack propagation behavior of offshore structural steel A131 under random ice loading, three ice failure modes that are commonly present in the Bohai Gulf are simulated according to the vibration stress responses induced by real ice loading. The test data are processed by a universal software FCPUSL developed on the basis of the theory of fatigue crack propagation and statistics. The fundamental parameter controlling the fatigue crack propagation induced by random ice loading is determined to be the amplitude root mean square stress intensity factor K-arm. The test results are presented on the crack propagation diagram where the crack growth rate da/dN is described as the function of K-arm. It is evident that the ice failure modes have great influence on the fatigue crack propagation behavior of the steel in ice-induced vibration. However, some of the experimental phenomena and test results are hard to be physically explained at present. The work in this paper is an initial attempt to investigate the cause of collapse of offshore structures due to ice loading.

关键词： low temperature fatigue crack propagation offshore structure steel A131 ice load random vibration

Technological Innovation and Business Model Innovation:Interactive Mechanism and Policy Orientation

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Frontiers of Business Research in China 2023年第4期17卷 449-466页

作者： LI Xiaohua Institute of Industrial Economics Chinese Academy of Social SciencesBeijing 100006China

In recent years,a new round of scientific and technological revolution and industrial transformation is well under ***,a deglobalization trend is growing,and major-countries’competition is *** this context,there has come a debate on whether technological innovation(“key&core technology”)or business model innovation(“soft model”)should be prioritized in ***&core technology and soft model differ in terms of driving forces,goal orientation,nature of knowledge,imitability,and return *** both are interdependent,mutually reinforcing,and evolve *** models are an important form of technological innovation,and technological innovation drives business model innovation,whilebusinesssmodelssupport,guide,promote,,and incubate technological *** the field of digital economy,business model innovation occurs more frequent,intense,widespread,and disruptive,but it also brings forth new *** addressing these challenges for both business model innovation and technological innovation,China should follow the principles of“guidance without participation,inclusion withregulation”and“encouragement withoutcompulsion.”

关键词： key&core technology technological ilnnovation business model policy

On the cultural legacy of the Cold War:Sino-US educational exchange(1949−1990)

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Frontiers of Education in China 2006年第4期1卷 487-504页

作者： Gu Ning Institute of World History Chinese Academy of Social SciencesBeijing 100006China

The Cold War affected the Sino-US educational exchange between 1949 and *** those years,preparation for educational exchanges,personal contact and cross-government relations characterized the three periods of the ***,even though the relationship had developed very fast,it was by no means smooth *** exchanges served as a political barometer and also acted as a conduit between the two when diplomatic relations were *** eased the tension when the relationship between the two countries had *** 40 years of exchanges were a win-win situation for both sides and one of the valuable cultural legacies that came out of the Cold War era.

关键词： Cold War cultural legacy Sino-US relations educational exchange

新干商墓青铜器非晶与纳米晶锈蚀产物结构的分析研究

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光谱学与光谱分析 2012年第5期32卷 1270-1273页

作者：成小林潘路中国国家博物馆北京100006

应用微区X射线衍射仪(μXRD)及高分辨透射电镜(HTEM)分析江西新干商墓出土的青铜器粉状锈蚀产物,结果表明锈蚀产物主要为具有锡石结构的SnO2,晶态形式为非晶与晶粒尺寸为4～5.7nm的纳米晶共混;能谱分析表明样品中除含有大量锡外,还有少... 详细信息

应用微区X射线衍射仪(μXRD)及高分辨透射电镜(HTEM)分析江西新干商墓出土的青铜器粉状锈蚀产物,结果表明锈蚀产物主要为具有锡石结构的SnO2,晶态形式为非晶与晶粒尺寸为4～5.7nm的纳米晶共混;能谱分析表明样品中除含有大量锡外,还有少量的铜、硅、铅与铁等元素。通过对锈蚀产物的高分辨透射电镜晶格条纹像计算,说明纳米晶SnO2的晶格中并没有其他原子的掺杂;对该锈蚀产物拉曼光谱的分析研究表明,样品不含有表征SnO2的体相拉曼峰,更具有非晶SnO2的特征,而973cm-1的弱而宽的峰表明样品含有非晶的硅酸盐类的锈蚀物,推测锈蚀产物中的少量铜、硅、铅与铁等元素应以非晶的形式存在。

关键词：青铜器锈蚀产物纳米晶和非晶锡石拉曼光谱

Development policy on new generation of nuclear power combined with desalination in China

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Nuclear Science and Techniques 2003年第2期14卷 144-148页

作者： ZANG Ming-Chang (China Power International Holding Ltd, Beijing 100006) China Power International Holding Ltd 北京 100006

The potential market for desalination industry is forecasted in China for a long term. A co-generation policy is proposed in power production and desalination. It has been predicted that the desalination would become a huge industry in China provided that the technology of desalination is improved and fresh water cost reduced to a certain level accepted by Chinese Residents.

关键词：核能中国脱盐工业核电站海洋资源