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失效的“压舱石”:经济安全化的现实转向

国际安全研究 2025年第1期43卷 133-154,159页

作者：高程部彦君中国社会科学院拉丁美洲研究所中国社会科学院大学国际政治经济学院北京100007 同济大学政治与国际关系学院上海200092

经济安全化是国家通过安全叙述将非安全的经济议题转化为安全议题的过程。在国家认为经济合作的收益将损害其在权力竞争中的整体所得时,或者在国家间政治外交关系遇到巨大震荡或冲击时,国家安全逻辑会超越经济逻辑而生效。此时,安全与... 详细信息

经济安全化是国家通过安全叙述将非安全的经济议题转化为安全议题的过程。在国家认为经济合作的收益将损害其在权力竞争中的整体所得时,或者在国家间政治外交关系遇到巨大震荡或冲击时,国家安全逻辑会超越经济逻辑而生效。此时,安全与经济问题在刻意煽动下交织碰撞,国家间密切的经贸关系不仅难以成为管控两国矛盾与分歧的“压舱石”,反而会被国家视作现存的“安全威胁”,成为某些国家中断或破坏双边政治经济联系的借口与手段。国家间存在的经济相互依赖关系也会随之成为安全化操纵国维护与拓展权力、进行地缘政治竞争和打击、操纵他国的战略性工具。因此,文章以存在紧密经济相互依赖的中美与俄欧关系为案例,在比较中美、俄欧之间不同经济安全化动因的基础上,分析经济安全化转向背后的选择逻辑,为中国更好地应对经济安全化挑战、更有针对性地发挥“经济压舱石”作用提供一定思考。

关键词：经济安全化经济压舱石国家安全经济相互依赖

Operator-Valued Fourier Multipliers on Multi-dimensional Hardy Spaces

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Chinese Annals of Mathematics,Series B 2011年第2期32卷 293-302页

作者： Shangquan bu Department of Mathematical Sciences Tsinghua University Beijing 100084 China

The author establishes operator-valued Fourier multiplier theorems on multi-dimensional Hardy spaces Hp(Td;X),where 1 ≤ p < ∞,d ∈ N,and X is an AUMD Banach space having the property (α).The suffcient condition on the multiplier is a Marcinkiewicz type condition of order 2 using Rademacher boundedness of sets of bounded linear *** is also shown that the assumption that X has the property (α) is necessary when d ≥ 2 even for scalar-valued *** the underlying Banach space does not have the property (α),a suffcient condition on the multiplier of Marcinkiewicz type of order 2 using a notion of d-Rademacher boundedness is also given.

关键词： H~p-Spaces Fourier multiplier Rademacher boundedness d-Rademacher boundedness

Impacts of CME Changing Mechanism for Allowing Negative Oil Prices on Prices and Trading Activities in the Crude Oil Futures Market

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Journal of Systems Science & Complexity 2023年第5期36卷 2001-2025页

作者： LU Fengbin bu Hui Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China School of Economics and Management Beihang UniversityBeijing 100191China

This study investigates and compares the effects of the Coronavirus disease 2019(COVID-19)pandemic,the Chicago mercantile exchange(CME)'s negative price suggestion on prices and trading activities in the crude oil futures market to discuss the cause of negative crude oil futures *** event studies,the empirical results show that the COVID-19 pandemic no longer impacts crude oil futures prices in April,2020 after controlled market risk,while the CME's negative prices suggestion can explain the crude oil futures price changes around and even after April 8,2020 to some ***,this study uncovers anomalies in prices and trading activities by analyzing returns,trading volume,open interest,and illiquidity measures using vector autoregressive(VAR)*** results imply that CME's allowing negative prices strengthens the price impact on trading volume and makes illiquidity risk *** study's results coincide with the following lawsuit evidence of market manipulation.

关键词： Event study illiquidity risk market risk negative crude oil futures price price-trading relationship

Well-posedness of degenerate differential equations in Hiilder continuous function spaces

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Frontiers of Mathematics in China 2015年第2期10卷 239-248页

作者： Shangquan bu Department of Mathematical Sciences Tsinghua University Beijing 100084 China

Using known operator-valued Fourier multiplier results on vectorvalued HSlder continuous function spaces, we completely characterize the wellposedness of the degenerate differential equations （Mu）＇（t） = Au（t）＋ f（t） for t ∈ R in HSlder continuous function spaces C^α（R; X） by the boundedness of the M-resolvent of A, where A and M are closed operators on a Banach space X satisfying D（A） D（M）.

关键词： Well-posedness degenerate differential equation Ca-multiplier,HSlder continuous function space

EXPLORATION　ON　THE　DEVELOPMENT　OF　COMPUTER　AIDED　EQUIPMENT　MAINTENANCE　MANAGEMENT　SYSTEMS

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中国有色金属学会会刊：英文版 1995年第4期5卷 158-167页

作者： bu, Yingyong Zhang, Huailiang Central South Univ of Technology Changsha China

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关键词： computer-aided equipment maintenance management system

DOES INVESTOR SENTIMENT PREDICT STOCK RETURNS? THE EVIDENCE FROM CHINESE STOCK MARKET

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Journal of Systems Science & Complexity 2014年第1期27卷 130-143页

作者： bu Hui PI Li School of Economics and Management Beihang University

This paper examines the proxy variables of investor sentiment in Chinese stock market carefully, and tries to construct an investor sentiment index indirectly. We use cross correlation analysis to examine lead-lag relationship between the proxy variables and HS300 index. The results show that net added accounts （NAA）, SSE share turnover （TURN）, and closed-end fund discount （CEFD） are leading variables to stock market. The average first day return of IPOs （RIPO） and relative degree of active trading in equity market （RDAT） are contemporary variables, while number of IPOs （NIPO） is a lagging variable of stock market. Using the sentiment proxy variables with most possible leading order, and forward selection stepwise regression method, the empirical results on monthly stock returns reveal that three leading proxy variables can be used to form a sentiment index. And the out of sample tests prove that this sentiment index has good predictive power of Chinese stock market, and it is robust.

关键词： Chinese stock market investor sentiment return predictability.

‘All-in-one’ strategy for metalla[3]catenanes and ring-in-ring complex

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National Science Review 2021年第5期8卷 14-15页

作者： Xian-He bu School of Materials Science and Engineering National Institute for Advanced MaterialsNankai University

Research into mechanically interlocked molecules, such as catenanes, rotaxanes and molecular knots, has been gaining momentum in recent decades, not only because of their intriguing structures and topological importance, but also because of their important applications as molecular machines and nanoscale devices [1,2]. In addition to traditional organic macrocycles based on covalent bonds,

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Testosterone and its metabolites： differential associations with cardiovascular and cerebrovascular events in men

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Asian Journal of Andrology 2018年第2期20卷 109-114页

作者： bu B Yeap School of Medicine University of Western Australia Perth Western Australia 6009 Australia Deportment of Endocrinology and Diabetes Fiona Stanley Hospital Perth Western Australia 6150 Australia

As men grow older, circulating testosterone declines while the incidence of cardiovascular disease increases. Thus, the role of sex hormones as biomarkers, and possibly contributing factors to clinical manifestations of cardiovascular disease in the increasing demographic of aging men, has attracted considerable interest. This review focuses on observational studies of endogenous androgens, namely circulating testosterone and dihydrotestosterone, which have examined their associations with cardiovascular events such as myocardial infarction and stroke. Studies which have examined the associations of endogenous estrogens, namely circulating estradiol, with these outcomes are also discussed. In large prospective cohort studies of predominantly middle-aged and older men, lower circulating testosterone consistently predicts higher incidence of cardiovascular events. Of note, both lower circulating testosterone and lower dihydrotestosterone are associated with higher incidence of stroke. These associations are less apparent when myocardial infarction is considered as the outcome. Results for estradiol are inconsistent. Lower circulating testosterone has been shown to predict higher cardiovascular disease-related mortality, as has lower circulating dihydrotestosterone. It is possible that the relationship of circulating androgens to cardiovascular events or mortality outcomes may be U-shaped rather than linear, with an optimal range defining men at lowest risk. Epidemiological studies are observational in nature and do not prove causality. Associations observed in studies of endogenous androgens need not necessarily translate into similar effects of exogenous androgens. Rigorous randomized controlled trials are needed to clarify the effects of testosterone treatment on cardiovascular risk in men.

关键词： cardiovascular disease cardiovascular-related mortality dihydrotestosterone estradiol male aging myocardial infarction stroke testosterone

Maximal Regularity of Second Order Delay Equations in Banach Spaces

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Acta Mathematica Sinica,English Series 2009年第1期25卷 21-28页

作者： Shang Quan bu Department of Mathematical Science Tsinghua University Beijing 100084 P. R. China

Using known Ca-multiplier result, we give necessary and sufficient conditions for the second order delay equations：u″（t）=Au（t）＋Fut＋Gu′＋f（t）,t∈Rto have maximal regularity in HSlder continuous function spaces C^α （R, X）, where X is a Banach space, A is a closed operator in X, F, G ∈L（C（[-r, 0], X）, X） are delay operators for some fixed r 〉 0.

关键词： maximal regularity delay equations Hoelder continuous functions C^α-multiplier