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Low-resolution Kramers-Kronig detection system with error-feedback noise shaping

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science China(Information sciences) 2024年第5期67卷 259-269页

作者： Xiangyong DONG Zhenming YU Hongyu huang Kaixuan sUN Kun XU state Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications

In this paper, we investigated the effects of error-feedback noise shaping(EFNs) on a lowresolution Kramers-Kronig(KK) detection system for the first time. Both 16-ary quadrature amplitude modulation(16-QAM) and 64-ary quadrature amplitude modulation(64-QAM) were considered in the experiment. The carrier tone was added on the transmitter side using the virtual carrier-assisted single sideband(VCA-ssB) method to meet the minimum phase(MP) condition. Under the MP condition, KK detection only needs the intensity of the optical signal to be detected by one photodiode(PD) to retrieve the phase information. However, the virtual carrier tone increases the carrier-to-signal power ratio(CsPR), which results in a high peak-to-average power ratio(PAPR) at the transmitter, causing an increase in quantization noise. To mitigate quantization noise in the low-resolution KK detection system, EFNs was applied. The application of EFNs increased the optimal CsPR of the KK detection system and improved receiver sensitivity. Using a 4-bit DAC and the EFNs, 80 km transmission was achieved in the 60-Gbit/s 64-QAM KK detection system.

关键词： optical fiber communications Kramers-Kronig receiver error-feedback noise shaping quantization noise carrier-to-signal power ratio

ON MONOTONE TRAVELING WAVEs FOR NICHOLsON's BLOWFLIEs EQUATION WITH DEGENERATE p-LAPLACIAN DIFFUsION

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Acta Mathematica scientia 2024年第4期44卷 1550-1571页

作者： Rui huang Yong WANG Zhuo YIN school of Mathematical sciences South China Normal UniversityGuangzhou 510631China

We study the existence and stability of monotone traveling wave solutions of Nicholson's blowflies equation with degenerate p-Laplacian *** prove the existence and nonexistence of non-decreasing smooth traveling wave solutions by phase plane analysis ***,we show the existence and regularity of an original solution via a compactness ***,we prove the stability and exponential convergence rate of traveling waves by an approximated weighted energy method.

关键词： degenerate diffusion p-Laplacian traveling waves stability

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Asymmetric Electrolytes Design for Aqueous Multivalent Metal Ion Batteries

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Nano-Micro Letters 2024年第3期16卷 227-253页

作者： Xiaochen Yang Xinyu Wang Yue Xiang Longtao Ma Wei huang Frontiers science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China school of Materials science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510641People’s Republic of China

With the rapid development of portable electronics and electric road vehicles,high-energy-density batteries have been becoming front-burner ***,homogeneous electrolyte cannot simultaneously meet diametrically opposed demands of high-potential cathode and low-potential anode,which are essential for high-voltage ***,homogeneous electrolyte is difficult to achieve bi-or multi-functions to meet different requirements of *** comparison,the asymmetric electrolyte with bi-or multi-layer disparate components can satisfy distinct requirements by playing different roles of each electrolyte layer and meanwhile compensates weakness of individual ***,the asymmetric electrolyte can not only suppress by-product sedimentation and continuous electrolyte decomposition at the anode while preserving active substances at the cathode for high-voltage batteries with long cyclic *** this review,we comprehensively divide asymmetric electrolytes into three categories:decoupled liquid-state electrolytes,bi-phase solid/liquid electrolytes and decoupled asymmetric solid-state *** design principles,reaction mechanism and mutual compatibility are also studied,***,we provide a comprehensive vision for the simplification of structure to reduce costs and increase device energy density,and the optimization of solvation structure at anolyte/catholyte interface to realize fast ion transport kinetics.

关键词： Asymmetric electrolyte Aqueous multivalent metal ion batteries Electrochemical stability windows Electrolyte interface

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Theoretical and numerical research on the dynamic launch response of carbon fiber composite cartridges

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Defence Technology（防务技术） 2024年第3期33卷 426-436页

作者： Ruijie Zhang Hui Xu Chenlei huang Kun Liu Zhilin Wu school of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094JiangsuChina

Understanding the dynamic response of composite material cartridges during the firing process is of great significance for improving their reliability and safety.A theoretical model describing the dynamic response of composite material cartridges is established based on the thick-walled cylinder theory and rate-dependent constitutive model of composite *** correctness of the theoretical model is validated through finite element simulations of cartridge *** influence of chamber pressure and cartridge wall thickness on the cartridge's deformation process and stress distribution is *** results indicate that the primary deformation of composite material cartridges inside the chamber is elastic *** to metal cartridges,composite material cartridges require higher pressure for touching-chamber and are more prone to developing gaps after unloading to ensure smooth *** the deformation process,the touching-chamber behavior of the cartridge can improve the stress *** the same chamber pressure,the touching-chamber behavior can reduce the circumferential stress by approximately 30%.The inner wall surface of the cartridge is a critical area that requires *** touching-chamber behavior can be facilitated by appropriately reducing the cartridge wall thickness while ensuring overall *** study can provide guidance for the optimization design of composite material cartridges.

关键词： Composite material cartridges Dynamic response Thick-walled cylinder theory Finite element simulation Toughing-chamber behavior

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Electro-optic 3D snapshot of a laser wakefield accelerated kilo-ampere electron bunch

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Light(science & Applications) 2024年第5期13卷 823-834页

作者： Kai huang Zhan Jin Nobuhiko Nakanii Tomonao Hosokai Masaki Kando Kansai Institute for Photon science(KPsI) National Institutes for Quantum Science and Technology(QST)KyotoJapan. Laser Accelerator R&D Innovative Light Sources DivisionRIKEN SPring-8 CenterHyogoJapan. sANKEN Osaka UniversityOsakaJapan

Laser wakefield acceleration,as an advanced accelerator concept,has attracted great attentions for its ultrahigh acceleration gradient and the capability to produce high brightness electron *** three-dimensional(3D)density serves as an evaluation metric for the particle bunch quality and is intrinsically related to the applications of an *** its significance,this parameter has not been experimentally measured in the investigation of laser wakefield *** report on an electro-optic 3D snapshot of a laser wakefield electron bunch at a position outside the *** 3D shape of the electron bunch was detected by simultaneously performing optical transition radiation imaging and electro-optic *** 3D structures to a few micrometer levels were reconstructed using a genetic *** electron bunch possessed a transverse size of less than 30 *** current profile shows a multi-peak *** main peak had a duration ofs and a peak current>1 *** maximum electron 3D number density was~9×10^(21)m^(-3).This research demonstrates a feasible way of 3D density monitoring on femtosecond kilo-ampere electron bunches,at any position of a beam transport line for relevant applications.

关键词： laser acceleration field

Hemodynamic management of congenital diaphragmatic hernia:the role of targeted neonatal echocardiography

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World Journal of Pediatric surgery 2024年第2期7卷 81-89页

作者： Aimann surak Linda Mahgoub joseph Y Ting Department of Pediatrics University of AlbertaEdmontonAlbertaCanada

Congenital diaphragmatic hernia(CDH)is a major congenital anomaly,resulting from the herniation of abdominal contents into the thoracic cavity,thereby impeding the proper development of the lungs and pulmonary *** severity correlates with a spectrum of pulmonary hypoplasia,pulmonary hypertension(PHT),and cardiac dysfunction,constituting the pathophysiological triad of this complex *** accurate diagnosis and effective management of PHT and cardiac dysfunction is pivotal to optimizing patient *** neonatal echocardiography is instrumental in delivering real-time data crucial for the bespoke,pathophysiology-targeted hemodynamic management of CDH-associated PHT.

关键词： congenital targeted neonatal

Kinematics-aware multigraph attention network with residual learning for heterogeneous trajectory prediction

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Journal of Intelligent and Connected Vehicles

Journal of Intelligent and Connected Vehicles 2024年第2期7卷 138-150页

作者： Zihao sheng Zilin huang sikai Chen Department of Civil and Environmental Engineering University of Wisconsin–MadisonMadisonWI 53706USA

Trajectory prediction for heterogeneous traffic agents plays a crucial role in ensuring the safety and efficiency of automated driving in highly interactive traffic *** studies in this area have focused on physicsbased approaches because they can clearly interpret the dynamic evolution of ***,physics-based methods often suffer from limited *** learning-based methods have demonstrated better performance,but they cannot be fully trusted due to the insufficient incorporation of physical *** mitigate the limitations of purely physics-based and learning-based approaches,this study proposes a kinematics-aware multigraph attention network(KAMGAT)that incorporates physics models into a deep learning framework to improve the learning process of neural ***,we propose a residual prediction module to further refine the trajectory predictions and address the limitations arising from simplified assumptions in kinematic *** evaluate our proposed model through experiments on two challenging trajectory datasets,namely,Apolloscape and *** findings from the experiments demonstrate that our model outperforms various kinematics-agnostic models with respect to prediction accuracy and learning efficiency.

关键词： trajectory prediction physics-informed deep learning multigraph attention residual learning automated driving

Joint Modeling of Citation Networks and User Preferences for Academic Tagging Recommender system

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Computers, Materials & Continua 2024年第6期79卷 4449-4469页

作者： Weiming huang Baisong Liu Zhaoliang Wang Faculty of Electrical Engineering and Computer science Ningbo UniversityNingbo315211China Inner Mongolia Metal Material Research Institute Baotou014000China

In the tag recommendation task on academic platforms,existing methods disregard users’customized preferences in favor of extracting tags based just on the content of the ***,it uses co-occurrence techniques and tries to combine nodes’textual content for *** still do not,however,directly simulate many interactions in network *** order to address these issues,we present a novel system that more thoroughly integrates user preferences and citation networks into article labelling ***,we first employ path similarity to quantify the degree of similarity between user labelling preferences and articles in the citation ***,the Commuting Matrix for massive node pair paths is used to improve computational ***,the two commonalities mentioned above are combined with the interaction paper labels based on the additivity of Poisson *** addition,we also consider solving the model’s parameters by applying variational *** results demonstrate that our suggested framework agrees and significantly outperforms the state-of-the-art baseline on two real datasets by efficiently merging the three relational *** on the Area Under Curve(AUC)and Mean Average Precision(MAP)analysis,the performance of the suggested task is evaluated,and it is demonstrated to have a greater solving efficiency than current techniques.

关键词： Collaborative filtering citation networks variational inference poisson factorization tag recommendation

Vibronic coupling effect on intersystem crossing rates of TADF emitters

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Chinese Journal of structural Chemistry 2024年第6期43卷 22-24页

作者： Xin huang Yi Zhao Wanzhen Liang state Key Laboratory of Physical Chemistry of solid surfaces iChEMFujian Provincial Key Lab of Theoretical and Computational ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China

To take advantage of all the singlet and triplet excitons and then achieve 100%internal quantum efficiency in OLED devices,the scientists have proposed the thermally activated delayed fluorescence(TADF)strategy which tries to achieve"delayed"fluorescence by converting triplet excitons to singlet excitons through a reverse intersystem crossing(IsC/RIsC)process with the help of thermal activation[1].In the early days,the efficient RIsC processes were facilitated by a negligible energy gap(△E_(sT))and a large spin-orbit coupling(sOC)matrix element(sOCME)between the first singlet(s_(1))and triplet(T_(1))excited states.

关键词： coupling system emitter