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Identification of Linear System. Using Binary Sensors with Random.Thresholds

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Journal of System. Science & Com.lexity 2024年第3期37卷 907-923页

作者： HUANG zhiyong SONG Qijiang School of m.them.tics Renmin University of ChinaBeijing 100872China School of m.them.tics Sino-French InstituteRenmin University of ChinaBeijing 100872China

In this paper,the problem.of identifying autoregressive-m.ving-average system. under random.threshold binary-valued output m.asurem.nts is *** the help of stochastic approxim.tion algorithm. with expanding truncations,the authors give the recursive estim.tes for the param.ters of both the linear system.and the binary *** reasonable conditions,all constructed estim.tes are proved to be convergent to the true values with probability one,and the convergence rates are also established.A sim.lation exam.le is provided to justify the theoretical results.

关键词： α-m.xing binary sensor quantized system stochastic approxim.tion stochastic thresh-old strongly consistent system.identification

Controlled synthesis of one-dim.nsional segm.nted heteronanostructures

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Science China m.terials 2024年第8期67卷 2715-2716页

作者： zhiyong Tang CAS Key Laboratory of Nanosystem.and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China

Telluride m.terials possess distinctive advantages,including the high theoretical volum. capacity and electrical conductivity,rendering them.prom.sing candidates for a range of energy storage and optoelectronic applications[1].Heterogeneous com.ositions and interfaces in heteronanostructures have significant im.lications on the electron transport,m.gnetic coupling,and phonon scattering,thereby prom.ting the perform.nces in photocatalysis,and therm.electrics[2].

关键词： synthesis rendering thereby

A Self-Attention Based Dynam.c Resource m.nagem.nt for Satellite-Terrestrial Networks

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China Com.unications 2024年第4期21卷 136-150页

作者： Lin Tianhao Luo zhiyong School of Electronics and Com.unication Engineering Sun Yat-Sen UniversityShenzhen 518107China Peng Cheng Laboratory Shenzhen 518107China

The satellite-terrestrial networks possess the ability to transcend geographical constraints inherent in traditional com.unication networks,enabling global coverage and offering users ubiquitous com.uting power support,which is an im.ortant developm.nt direction of future *** this paper,we take into account a m.lti-scenario network m.del under the coverage of low earth orbit(LEO)satellite,which can provide com.uting resources to users in faraway areas to im.rove task processing ***,LEO satellites experience lim.tations in com.uting and com.unication resources and the channels are tim.-varying and com.lex,which m.kes the extraction of state inform.tion a daunting ***,we explore the dynam.c resource m.nagem.nt issue pertaining to joint com.uting,com.unication resource allocation and power control for m.lti-access edge com.uting(m.C).In order to tackle this form.dable issue,we undertake the task of transform.ng the issue into a m.rkov decision process(m.P)problem.and propose the self-attention based dynam.c resource m.nagem.nt(SABDRm.algorithm.which effectively extracts state inform.tion features to enhance the training *** results show that the proposed algorithm.is capable of effectively reducing the long-term.average delay and energy consum.tion of the tasks.

关键词： m.bile edge com.uting resource m.nagem.nt satellite-terrestrial networks self-attention

Supported Recyclable m.tal-free Frustrated Lewis Pair Catalyst for Catalytic Hydrogenation of Substituted Pyridines to Piperidines

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Chem.cal Research in Chinese Universities 2024年第4期40卷 682-689页

作者： m. Shaohua TANG zhiyong CAS Key Laboratory for Nanosystem.and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190P.R.China University of Chinese Academ. of Sciences Beijing100049P.R.China

The construction of heterogeneous frustrated Lewis pairs(FLPs)catalysts is crucial for realizing highly efficient and recyclable pyridines catalytic *** this work,we prepared a recyclable heterogenous FLPs catalyst Cm.-BF with conjugated m.croporous polym.r Cm.-ethynyl as the support via self-catalyzed 1,1-carboboration reaction with com.ercial Lewis acid B(C_(6)F_(5))_(3).The as-synthesized Cm.-BF dem.nstrates superior heterogenous catalytic hydrogenation perform.nce(conversion>99%),and considerable stability(84%conversion after three cycles)in recyclable hydrogenation of 2,*** work provides insights into the fabrication and catalytic application of recyclable heterogenous FLP catalysts.

关键词： Pyridine hydrogenation Frustrated Lewis pair Conjugated m.croporous polym.r

Road m.p for, and technical challenges of, carbon-nanotube integrated circuit technology

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National Science Review 2024年第3期11卷 14-16页

作者： Jia Si Panpan Zhang zhiyong Zhang Key Laboratory for the Physics and Chem.stry of Nanodevices and Center for Carbon-based Electronics School of Electronics Peking University State Key Laboratory of Inform.tion Photonics and Optical Com.unications Beijing University of Posts and Telecommunications

The past decade has witnessed an explosion of research on carbon-nanotube(CNT) electronics due to their outstanding properties, including an ultrathin body, a high carrier m.bility and a high saturation velocity.

关键词： TRANSISTORS

Interwoven grain boundary m.kes hom.porous and crystalline polym.r m.m.rane with high m.chanical stability

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Science China Chem.stry 2024年第11期67卷 3503-3504页

作者： Lianshan Li zhiyong Tang CAS Key Laboratory of Nanosystem.and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Centre for Nanoscience and Technology University of Chinese Academ. of Sciences

m.m.rane separation is widely used in industry to recover and capture gases or to purify liquids. Com.ared with conventional separation m.thods, such as cryogenic and adsorptive or absorptive separation, m.m.rane separation is an energy-efficient and environm.nt-friendly technique that occupies less space and can be operated in a continuous m.de [1].

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Beam.Training and Tracking in m.Wave Com.unication:A Survey

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China Com.unications 2024年第6期21卷 1-22页

作者： Wang Yi Wei Zhiqing Feng zhiyong Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhou 324003China School of Inform.tion and Com.unication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Key Laboratory of Universal Wireless Com.unications Ministry of EducationBeijing University of Posts and TelecommunicationsBeijing 100876China

Com.unicating on m.llim.ter wave(m.Wave)bands is ushering in a new epoch of m.bile com.unication which provides the availability of 10 Gbps high data rate ***,m.Wave links are easily prone to short transm.ssion range com.unication because of the serious free space path loss and the blockage by *** overcom. these challenges,highly directional beam. are exploited to achieve robust links by hybrid *** aligning the transm.tter and receiver beam.,*** training,is vitally im.ortant to high data rate ***,it m.y cause huge overhead which has negative effects on initial access,handover,and ***,the m.bility patterns of users are com.licated and dynam.c,which m.y cause tracking error and large tracking *** efficient beam.tracking m.thod has a positive effect on sustaining robust *** article provides an overview of the beam.training and tracking technologies on m.Wave bands and reveals the insights for future research in the 6th Generation(6G)m.bile ***,som. open research problem. are proposed to realize fast,accurate,and robust beam.training and *** hope that this survey provides guidelines for the researchers in the area of m.Wave com.unications.

关键词： 6G beam.tracking beam.training beam.orm.ng m.Wave

Outlier Robust Feature Correspondence by Learning Based m.tching Process

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Journal of System. Science & Com.lexity 2024年第4期37卷 1351-1367页

作者： YANG Xu ZENG Shaofeng LIU zhiyong State Key Laboratory of m.ltim.dal Artificial Intelligence System. Institute of Automation of Chinese Academy of SciencesBeijing 100190China University of Chinese Academ. of Sciences Beijing 100190China

Feature correspondence is a crucial aspect of various com.uter vision and robot vision *** traditional optim.zation-based m.tching techniques,researchers have recently adopted a learning-based approach for m.tching,but these m.thods face challenges in dealing with outlier *** paper presents an outlier robust feature correspondence m.thod that em.loys a pruned attentional graph neural network and a m.tching layer to address the outlier ***,the authors introduce a m.dified cross-entropy m.tching loss to handle the outlier *** a result,the proposed m.thod significantly enhances the perform.nce of learning-based m.tching algorithm. in the presence of outlier *** experim.nts confirm.the effectiveness of the proposed approach.

关键词： Feature correspondence graph neural network optim.l transport problem pointm.tching

Potential effects of autom.ted driving on vehicle travel dem.nd: A com.arison of three case cities

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第2期11卷 348-361页

作者： Jingchen Dai Ruim.n Li zhiyong Liu School of Civil Engineering Tsinghua UniversityBeijing 100084China Hang Lung Center for Real Estate Tsinghua UniversityBeijing 100084China School of Traffic and Transportation Beijing Jiaotong UniversityBeijing 100044China

Autom.ted vehicles(AVs)hold the potential to reduce road accidents,m.tigate traffic congestion,and im.rove travel ***,the possible countervailing im.acts from.the changes in underserved populations’vehicle travel dem.nd tend to be *** determ.ne the vehicle travel dem.nd changes that resulted from.underserved populations aged between 6 and 80,this paper explores the latent effect of AVs on vehicle kilom.ters traveled(VKT)in a fully AV environm.nt using person trip survey data from.the cities of Sanya,Shijiazhuang,and Shenzhen in *** paper uses the natural decline hypothesis of travel dem.nd and proposes a regression m.del to investigate the difference am.ng the cities’latent vehicle travel *** show that the average VKT of the overall population in Sanya,Shijiazhuang,and Shenzhen increased by 33.4%,47.0%,and46.8%,*** analysis of the regression m.del confirm. that the current travel behavior of individuals can affect the degree of increase in their average *** AVs into public transport,increasing the acceptance of autom.ted shared m.bility options,transform.ng road space use type,and prototyping AV designs with various features and needs are potential m.thods to cope with the countervailing *** total VKT of the overall population increased by approxim.tely 10%-25%depending on the *** conclusions of this paper provide inform.tive insights into the evaluation of VKT for underserved populations and contribute to the deploym.nt of AVs to address equity and inclusion issues.

关键词： Autom.ted vehicles Vehicle kilom.ters traveled Aging population Travel behavior Natural decline hypothesis