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Chinese Journal of Chemistry 2020年第12期38卷 1579-1584页

作者： chao Zheng State Key Laboratory of Orgonometallic Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling LuShanghai 200032China

of main observation and conclusion Transition-metal-mediated hydride transfer reactions are fundamental steps in olefin polymerization and isomerization processes.P-Hydride elimination/migratory insertion sequence and ligand-to-ligand hydrogen transfer mechanism have been proposed for these *** have performed comprehensive theoretical studies on prototype 1,4-hydride transfer reactions mediated by the Cp^*M(Ⅲ)complexes(M=Co,Rh,Ir).Depending on the metal center,the reaction courses are quite divergent,ranging from dynamically concerted to explicitly stepwise manner.A More O'Farrell-Jencks-type plot is suggested to demonstrate the perturbation to the mechanistic continuum from the significant dynamic effects.

关键词： hydride steps perturbation

Variations of flutter mechanism of a span-morphing wing involving rigid-body motions

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Chinese Journal of Aeronautics 2018年第3期31卷 490-497页

作者： chao HUANG chao YANG Zhigang WU Changhong TANG School of Aeronautic Science and Engineering Beihang University The First Aircraft Institute Aviation Industry Corporation of China

The present paper aims to reveal the significance of rigid-body motions for the flutter mechanism of a span-morphing wing model. The inclusion of rigid-body motions into aeroelastic formulation and flutter analysis is presented. A state-space aeroelastic equation combining the dynamics of stepped Euler-Bernoulli beam with unsteady strip aerodynamic theory is developed by quasi-static modeling. Using a numerical example, variations of flutter mechanism from the bending-torsional flutter to the body-freedom flutter are observed as the span increases. In addition,effects of some dimensionless parameters on the variations of flutter mechanism are *** investigated parameters belonging to the fuselage have limited influences on the bendingtorsional flutter but a significant impact on the body-freedom flutter.

关键词： Aeroelasticity Aircraft design Body-freedom flutter Dynamic modeling Flutter Rigid body modes Span-morphing

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万家寨水库水量调度自适应模型研究

水利技术监督 2025年第1期 221-224,236页

作者：邢华孙超黄河万家寨水利枢纽有限公司山西太原030000

为增强水库水量调度对外部环境变化的适应性,提升流域水资源管理水平,基于水量调度中用水户与供水户的交互过程,文章建立万家寨水库水量调度自适应模型,并采用基于罚函数的分布式优化算法模拟供水决策机制。模型运行结果表明水库水量调... 详细信息

为增强水库水量调度对外部环境变化的适应性,提升流域水资源管理水平,基于水量调度中用水户与供水户的交互过程,文章建立万家寨水库水量调度自适应模型,并采用基于罚函数的分布式优化算法模拟供水决策机制。模型运行结果表明水库水量调度计划能根据社会经济发展和上游来水变化适应性生成,通过水库调水可有效满足区域城市、工业和生态用水需求,结果可为水库水量调度计划的编制和流域水资源管理提供依据。

关键词：水量调度水资源系统自适应模型利益偏好因子万家寨水库

Spatio-Temporal Generative Adversarial Networks

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Chinese Journal of Electronics 2020年第4期29卷 623-631页

作者： QIN chao GAO Xiaoguang School of Electronics and Information Engineering Northwestern Polytechnical University

We designed a spatiotemporal generative adversarial network which given some initial data and random noise, generates a consecutive sequence of spatiotemporal samples that have a logical *** build spatial discriminators and temporal discriminators to distinguish whether the samples generated by the generator meet the requirements for time and space *** model is trained on the skeletal dataset and the Caltrans Performance Measurement System District 7 *** contrast to traditional Generative adversarial networks(GANs), the proposed spatiotemporal GAN can generate logically coherent samples with the corresponding spatial and temporal features while avoiding mode *** addition, we show that our model can generate different styles of spatiotemporal samples given different random noise *** model will extend the potential range of applications of GANs to areas such as traffic information simulations and multiagent adversarial simulations.

关键词： Spatio-temporal Generative adversarial networks(GANs) Spatial discriminator Temporal discriminator

Design of a 200-MHz continuous-wave radio frequency quadrupole accelerator for boron neutron capture therapy

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Nuclear Science and Techniques 2021年第3期32卷 1-10页

作者： Zhi-chao Gao Liang Lu chao-chao Xing Lei Yang Tao He Xue-Ying Zhang Institute of Modern Physics Chinese Academy of ScienceLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China The Sino-French Institute for Nuclear Energy and Technology Sun Yat-sen UniversityZhuhai 519000China

A high-intensity continuous-wave(CW) radio frequency quadrupole(RFQ) accelerator is designed for boron neutron capture *** transmission efficiency of a 20-mA proton beam accelerated from 30 keV to 2.5 MeV can reach 98.7% at an operating frequency of 200 *** beam dynamics have a good tolerance to *** comparing the high-frequency parameters of quadrilateral and octagonal RFQ cross sections,the quadrilateral structure of the four-vane cavity is selected owing to its multiple advantages,such as a smaller cross section at the same frequency and easy *** addition,tuners and undercuts are designed to tune the frequency of the cavity and achieve a flat electric field distribution along the *** this paper,the beam dynamic simulation and electromagnetic design are presented in detail.

关键词： RFQ accelerator BNCT Dynamic simulation Electromagnetic design

Mean-Square Stabilization of Networked Sampled-Data Systems with Packet Losses:Critical Sampling Intervals

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Journal of Systems Science & Complexity 2022年第4期35卷 1278-1292页

作者： WANG chao WANG Bingchang School of Control Science and Engineering Shandong UniversityJinan250061China

This paper studies the stabilizing problem of networked sampled-data linear systems with independent and identically distribution(i.i.d.) packet dropouts. First of all, for the sampled-data system without packet losses, the necessary and sufficient conditions for the critical sampling intervals are given to ensure the mean square stability where zero order holder and generalized holder are adopted, respectively. Secondly, for the sampled-data system with i.i.d. packet losses, necessary and sufficient conditions for the critical sampling intervals are given to ensure the mean square stability where the zero order holder control is adopted. The random sampling framework is used to examine the case that the value of the control signal is not zero when the packet loss occurs, but the value of the previous control signal when the data packet is not lost. For the sampled-data system with *** losses, the range of the sampling interval is given to ensure the mean square stability where the generalized holder control is adopted. Some numerical simulations are provided to validate the theoretical results.

关键词： Generalized hold i.i.d.packet dropout sampled-data linear system zero-order hold

A novel imprecise stochastic process model for time-variant or dynamic uncertainty quantification

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Chinese Journal of Aeronautics 2022年第9期35卷 255-267页

作者： Jinwu LI chao JIANG State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China

This paper proposes a novel model named as “imprecise stochastic process model” to handle the dynamic uncertainty with insufficient sample information in real-world problems. In the imprecise stochastic process model, the imprecise probabilistic model rather than a precise probability distribution function is employed to characterize the uncertainty at each time point for a time-variant parameter, which provides an effective tool for problems with limited experimental samples. The linear correlation between variables at different time points for imprecise stochastic processes is described by defining the auto-correlation coefficient function and the crosscorrelation coefficient function. For the convenience of analysis, this paper gives the definition of the P-box-based imprecise stochastic process and categorizes it into two classes: parameterized and non-parameterized P-box-based imprecise stochastic processes. Besides, a time-variant reliability analysis approach is developed based on the P-box-based imprecise stochastic process model,through which the interval of dynamic reliability for a structure under uncertain dynamic excitations or time-variant factors can be obtained. Finally, the effectiveness of the proposed method is verified by investigating three numerical examples.

关键词： Dynamic reliability analysis Epistemic uncertainty Imprecise random variable Imprecise stochastic process P-box model Time-variant uncertainty

基于产教融合的汽车营销情境模拟教学模式研究

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汽车实用技术 2025年第1期50卷 132-135页

作者：刘超刘子萌青岛黄海学院山东青岛266427

随着汽车营销行业人才结构需求的转变,高校更需要注重汽车营销实践技能的培养。因此,基于产教融合的汽车营销情境模拟教学模式改革,可以更好地将产业与教学紧密结合,通过模拟真实汽车营销场景,让学生在实践中学习汽车营销的理论知识、... 详细信息

随着汽车营销行业人才结构需求的转变,高校更需要注重汽车营销实践技能的培养。因此,基于产教融合的汽车营销情境模拟教学模式改革,可以更好地将产业与教学紧密结合,通过模拟真实汽车营销场景,让学生在实践中学习汽车营销的理论知识、掌握营销操作技能,并增强实际应用能力。通过对汽车营销课程的情境创设、任务驱使、实践模拟以及产教结合等,实现汽车营销理论与实践的深度融合,在有效提升教学质量与效果的同时,有效培养学生的实践能力和创新精神,并在此基础上更好地推动汽车营销行业的创新发展以及教育资源优化配置。

关键词：产教融合情境模拟教学模式汽车营销

Metallogenesis and major challenges of porphyry copper systems above subduction zones

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Science China Earth Sciences 2020年第7期63卷 899-918页

作者： Huayong CHEN chao WU Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of Sciences

Porphyry copper±molybdenum±gold deposits(PCDs) are the most representative magmatic-hydrothermal metallogenic system above subduction zones with important economic value. Previous studies revealed that large PCDs are generally formed from initial arc magmas(from subduction-induced partial melting of the mantle wedge), which eventually ascend to the shallow crust(3–5 km) for mineralization after a series of complex evolution processes. These processes include(1) the dehydration or partial melting of subducting slab, which induces partial melting of the metasomatized mantle wedge;(2)the ascent of mantle-derived magma to the bottom of the lower crust, which subsequently undergoes crustal processes such as assimilation plus fractional crystallization(AFC) or melting, assimilation, storage and homogenization(MASH);(3) the magma chamber formation at the bottom of the lower, middle and upper crust;(4) the final emplacement and volatilization of porphyry stocks;and(5) the accumulation of ore-forming fluids and metal precipitation. Despite the many decades of research, many issues involving the PCD metallogenic mechanism still remain to resolve, such as(1) the tectonic control on the geochemical characteristics of ore-forming magma;(2) the reason for the different lifespans of the long-term magmatic arc evolution and geologically "instantaneous" mineralization processes;(3) the source of ore-forming materials;(4) the relative contributions of metal pre-enrichment to mineralization by the magma source and by magmatic evolution;and(5) the decoupling behaviors of Cu and Au during the pre-enrichment. These issues point out the direction for future PCD metallogenic research, and the resolution to them will deepen our understanding of the metallogenesis at convergent plate boundaries.

关键词： Subduction zone Porphyry Cu deposit Metallogenesis

Pyrometallurgical recycling of spent lithium-ion batteries from conventional roasting to synergistic pyrolysis with organic wastes

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Journal of Energy Chemistry 2023年第10期85卷 547-561,I0014页

作者： chao Pan Yafei Shen China Energy Science and Technology Research Institute Co.Ltd. Nanjing 210023JiangsuChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC) Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044JiangsuChina

The synergistic pyrolysis has been increasingly used for recycling spent lithium-ion batteries(LIBs)and organic wastes(hydrogen and carbon sources),which are in-situ transformed into various reducing agents such as H_(2),CO,and char via carbothermal and/or gas thermal *** with the conventional roasting methods,this“killing two birds with one stone”strategy can not only reduce the cost and energy consumption,but also realize the valorization of organic *** paper concluded the research progress in synergistic pyrolysis recycling of spent LIBs and organic *** the one hand,valued metals such as Li,Co,Ni,and Mn can be recovered through the pyrolysis of the cathode materials with inherent organic materials(e.g.,separator,electrolyte)or graphite *** the pyrolysis process,the organic materials are decomposed into char and gases(e.g.,CO,H_(2),and CH_(4))as reducing agents,while the cathode material is decomposed and then converted into Li_(2)CO_(3) and low-valent transition metals or their oxides via in-situ thermal *** formed Li_(2)CO_(3) can be easily recovered by the water leaching process,while the formed transition metals or their oxides(e.g.,Co,CoO,Ni,MnO,etc.)can be recovered by the reductant-free acid leaching or magnetic separation *** the other hand,organic wastes(e.g.,biomass,plastics,etc.)as abundant hydrogen and carbon sources can be converted into gas(e.g.,H_(2),CO,etc.)and char via *** cathode materials are decomposed and subsequently reduced by the pyrolysis gas and *** addition,the pyrolysis oil and gas can be upgraded by catalytic reforming with the active metals derived from cathode ***,great challenges are proposed to promote this promising technology in the industrial applications.

关键词： Synergistic pyrolysis Spent LIBs Biomass Recycling Reduction roasting