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GraphStGAN:Situation understanding network of slow-fast high maneuvering targets for maritime monitor services of Iot data

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Digital Communications and Networks 2024年第3期10卷 620-630页

作者： Guanlin Wu Haipeng Wang Yu Liu You he Shenzhen International Graduate School Tsinghua UniversityShenzhen518071China Institute of Space Science and Applied technology Harbin Institute of TechnologyShenzhen518055China Department of Electronic Engineering Tsinghua UniversityBeijing100084China

With the rapid growth of the maritime Internet of things(Iot)devices for Maritime Monitor Services(MMS),maritime traffic controllers could not handle a massive amount of data in *** unmanned MMS,one of the key technologies is situation ***,the presence of slow-fast high maneuvering targets and track breakages due to radar blind zones make modeling the dynamics of marine multi-agents difficult,and pose significant challenges to maritime situation *** order to comprehend the situation accurately and thus offer unmanned MMS,it is crucial to model the complex dynamics of multi-agents using Iot big ***,previous methods typically rely on complex assumptions,are plagued by unstructured data,and disregard the interactions between multiple agents and the spatial-temporal correlations.A deep learning model,Graph Spatial-temporal Generative Adversarial Network(GraphStGAN),is proposed in this paper,which uses graph neural network to model unstructured data and uses StGAN to learn the spatial-temporal dependencies and *** experiments show the effectiveness and robustness of the proposed method.

关键词： Internet of things Multi-agents Graph neural network Maritime monitoring services

reactor field reconstruction from sparse and movable sensors using Voronoi tessellation-assisted convolutional neural networks

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Nuclear Science and techniques 2024年第5期35卷 173-185页

作者： he-Lin Gong Han Li Dunhui Xiao Sibo Cheng Paris Elite Institute of technology Shanghai Jiao Tong UniversityShanghai 200240China School of Mathematical Sciences Tongji UniversityShanghai 200092China Department of Computing Data Science InstituteImperial College LondonLondon SW72AZUK

the aging of operational reactors leads to increased mechanical vibrations in the reactor *** vibration of the incore sensors near their nominal locations is a new problem for neutronic field *** field-reconstruction methods fail to handle spatially moving *** this study,we propose a Voronoi tessellation technique in combination with convolutional neural networks to handle this *** from movable in-core sensors were projected onto the same global field structure using Voronoi tessellation,holding the magnitude and location information of the *** convolutional neural networks were used to learn maps from observations to the global *** proposed method reconstructed multi-physics fields(including fast flux,thermal flux,and power rate)using observations from a single field(such as thermal flux).Numerical tests based on the IAEA benchmark demonstrated the potential of the proposed method in practical engineering applications,particularly within an amplitude of 5 cm around the nominal locations,which led to average relative errors below 5% and 10% in the L_(2) and L_(∞)norms,respectively.

关键词： Voronoi tessellation Field reconstruction Nuclear reactors reactor physics On-line monitoring

Subnatural-linewidth fluorescent single photons

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Photonics research 2024年第4期12卷 625-637页

作者： he-BIN ZHANG GAO-XIANG LI YONG-CHUN LIU State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Department of Physics Huazhong Normal UniversityWuhan 430079China Frontier Science Center for Quantum Information Beijing 100084China

Subnatural-linewidth single photons are of vital importance in quantum optics and quantum information *** to previous research, it appears difficult to utilize resonance fluorescence to generate single photons with subnatural linewidth. here we propose a universally applicable approach to generate fluorescent single photons with subnatural linewidth, which can be implemented based on Λ-shape and similar energy ***, the general condition to obtain fluorescent single photons with subnatural linewidth is *** single-photon linewidth can be easily manipulated over a broad range by external fields, which can be several orders of magnitude smaller than the natural linewidth. Our study can be easily implemented in various physical platforms with current experimental techniques and will significantly facilitate the research on the quantum nature of resonance fluorescence and the technologies in quantum information science.

关键词： quantum utilize optics

A 28/56 Gb/s NrZ/PAM-4 dual-mode transceiver with 1/4 rate reconfigurable 4-tap FFE and half-rate slicer in a 28-nm CMOS

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Journal of Semiconductors 2024年第6期45卷 35-46页

作者： Yukun he Zhao Yuan Kanan Wang renjie tang Yunxiang he Xian Chen Zhengyang Ye Xiaoyan Gui School of Microelectronics Xi’an Jiaotong UniversityXi’an 710049China

A 28/56 Gb/s NrZ/PAM-4 dual-mode transceiver(trx)designed in a 28-nm complementary metal-oxide-semiconduc-tor(CMOS)process is presented in this article.A voltage-mode(VM)driver featuring a 4-tap reconfigurable feed-forward equal-izer(FFE)is employed in the quarter-rate transmitter(tX).the half-rate receiver(rX)incorporates a continuous-time linear equal-izer(CtLE),a 3-stage high-speed slicer with multi-clock-phase sampling,and a clock and data recovery(CDr).the experimen-tal results show that the trx operates at a maximum speed of 56 Gb/s with chip-on board(COB)*** 28 Gb/s NrZ eye diagram shows a far-end vertical eye opening of 210 mV with an output amplitude of 351 mV single-ended and the 56 Gb/s PAM-4 eye diagram exhibits far-end eye opening of 33 mV(upper-eye),31 mV(mid-eye),and 28 mV(lower-eye)with an output amplitude of 353 mV *** recovered 14 GHz clock from the rX exhibits random jitter(rJ)of 469 fs and deterministic jitter(DJ)of 8.76 *** 875 Mb/s de-multiplexed data features 593 ps horizontal eye opening with 32.02 ps rJ,at bit-error rate(BEr)of 10-5(0.53 UI).the power dissipation of tX and rX are 125 and 181.4 mW,respectively,from a 0.9-V sup-ply.

关键词： transceiver(trx) feed-forward equalizer(FFE) clock and data recovery(CDr) continuous time linear equalizer(CtLE)

the governance technology for blockchain systems:a survey

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Frontiers of Computer Science 2024年第2期18卷 181-197页

作者： Guocheng ZHU Debiao he Haoyang AN Min LUO Cong PENG School of Cyber Science and Engineering Wuhan UniversityWuhan 430072China Shandong Provincial Key Laboratory of Computer Networks Qilu University of Technology(Shandong Academy of Sciences)Jinan 250014China

After the Ethereum DAO attack in 2016,which resulted in significant economic losses,blockchain governance has become a prominent research ***,there is a lack of comprehensive and systematic literature review on blockchain *** deeply understand the process of blockchain governance and provide guidance for the future design of the blockchain governance model,we provide an in-depth review of blockchain *** this paper,first we introduce the consensus algorithms currently used in blockchain and relate them to governance ***,we present the main content of off-chain governance and investigate two well-known off-chain governance ***,we investigate four common on-chain governance voting techniques,then summarize the seven attributes that the on-chain governance voting process should meet,and finally analyze four well-known on-chain governance blockchain projects based on the previous *** hope this survey will provide an in-depth insight into the potential development direction of blockchain governance and device future research agenda.

关键词： blockchain governance off-chain governance on-chain governance voting

Will fuel switching ever happened in China’s thermal power sector?the rule of carbon market design

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Frontiers of Engineering Management 2024年第2期11卷 207-230页

作者： Anqi he Huarong PENG Wuhan University Institute for International Studies Wuhan UniversityWuhan 430072China Climate Change and Energy Economics Study Center Economics and Management SchoolWuhan UniversityWuhan 430000China Collaborative Innovation Center for Emissions trading System by Ministry of Education and Hubei Provincial Government Hubei University of EconomicsWuhan 430200China

to assess the effectiveness of China’s emissions trading scheme(EtS)in facilitating energy structure optimization,we constructed a fuel-switching model utilizing data from 1067 generating units under the Chinese EtS *** model simulates the fuel-switching price in China’s thermal power sector,taking into account various allowance allocation *** results show the following:1)thermal power plants will transition from coal to gas if the current EtS auction rate surpasses 26%.2)Furthermore,in scenarios where the EtS operates independently,a transition will occur if the carbon allowance market is entirely auction-based and the carbon price attains 119.50 USD/tCO_(2).3)In a collaborative scenario involving both the EtS and a gas feed-in tariff subsidy,a carbon price of 9.39 USD/tCO_(2)will effect a transition from coal to gas,provided both the auction ratio and subsidy price are maximized.

关键词： EtS thermal power plant fuel switching allowance allocation method feed-in tariff subsidy

OsPDr20 is an ABCG metal transporter regulating cadmium accumulation in rice

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Journal of Environmental Sciences 2024年第2期136卷 21-34页

作者： he Li Chao Li Di Sun Zhi Min Yang Department of Biochemistry and Molecular Biology College of Life SciencesNanjing Agricultural UniversityNanjing 210095China

Cadmium(Cd)is a non-essential toxic heavy metal,seriously posing high environmental risks to human *** genetic resources relevant to functional genes is important for understanding the metal absorption and accumulation in crops and bioremediation of Cd-polluted *** study investigated a functionally uncharacterized AtP binding cassette transporter G family(ABCG)gene encoding a Pleiotropic Drug resistance 20(PDr20)type metal transporter which is localized to the plasma membrane of ***20 was transcriptionally expressed in almost all tissues and organs in lifespan and was strongly induced in roots and shoots of young rice under Cd *** expression of OsPDr20 in a yeast mutant ycf1 sensitive to Cd conferred cellular tolerance with less Cd *** of OsPDr20 by rNA interference(rNAi)moderately attenuated root/shoot elongation and biomass,with reduced chlorophylls in rice grown under hydroponic medium with 2 and 10μmol/L Cd,but led to more Cd accumulation.A field trial of rice grown in a realistic Cd-contaminated soil(0.40 mg/kg)showed that rNAi plants growth and development were also compromised compared to wild-type(Wt),with smaller panicles and lower spikelet fertility but little effect on yield of ***,OsPDr20 suppression resulted in unexpectedly higher levels of Cd accumulation in rice straw including lower leaves and culm and *** results suggest that OsPDr20 is actively involved in Cd accumulation and homeostasis in rice *** increased Cd accumulation in the rNAi plants has the potential application in phytoremediation of Cd-polluted wetland soils.

关键词： rice ABCG transporter Cadmium accumulation Phytoremediation

Immune checkpoint inhibitors break whose heart? Perspectives from cardio-immuno-oncology

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Genes & Diseases 2024年第2期11卷 807-818页

作者： Yingying he Hui Yu Shuang Dai Miao he Ling Ma Zihan Xu Feng Luo Li Wang Oncology Department Deyang People's HospitalDeyangSichuan 618000China Department of Medical Oncology Lung Cancer CenterWest China HospitalSichuan UniversityChengduSichuan 610000China Cardiovascular Department Mianyang Central HospitalMianyangSichuan 621000China Department of rheumatology and Immunology Deyang People's HospitalDeyangSichuan 618000China

Immune checkpoint inhibitors (ICIs) are monoclonal antibody antagonists,which can block cytotoxic t lymphocyte antigen-4 (CtLA-4),programmed death-1/ligand-1 (PD-1/PD-L1) pathways,and other molecules exploited by tumor cells to evade t cell-mediated immune *** have transformed the treatment landscape for various cancers due to their amazing *** anti-tumor therapies,including targeted therapy,radiotherapy,and chemotherapy,combine ICIs to make the treatment more ***,the off-target immune activation caused by ICIs may lead to a broad spectrum of immune-related adverse events (irAEs) affecting multiple organ *** irAEs,cardiotoxicity induced by ICIs,uncommon but fatal,has greatly offset survival benefits from ICIs,which is heartbreaking for both patients and ***,such cardiotoxicity requires special vigilance,and it has become a common challenge both for patients and *** article reviewed the clinical manifestations and influence of cardiotoxicity from the view of patients and clinicians,elaborated on the underlying mechanisms in conjunction with animal studies,and then attempted to propose management strategies from a cardio-immuno-oncology multidisciplinary perspective.

关键词： Cancer management Cardio-immuno-oncology multidisciplinary Cardiotoxicity Immune checkpoint inhibitors Immune tolerance

Advances in the molecular genetics of parathyroid tumors

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Chinese Medical Journal 2024年第3期137卷 376-378页

作者： Liwei Zhao Xianghui he Department of General Surgery Tianjin Medical University General HospitalTianjin 300052China

to the Editor:Parathyroid tumors are endocrine tumors that can lead to disorders of calcium and phosphorus metabolism and involve multiple organ *** the past,the genetics of parathyroid tumors have been well established,and the significant roles of genes such as MEN1,CDC73,and CCND1 in the process of parathyroid tumorigenesis have been identified and confirmed[table 1].However,with further research and the widespread use of sequencing technology,“new”roles for“old”genes and new pathogenic mechanisms have been discovered.

关键词： metabolism tumors parathyroid