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Image Semantic Segmentation Approach for Studying Human Behavior on Image data

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Wuhan University Journal of Natural Sciences 2024年第2期29卷 145-153页

作者： ZHENG zhan CHEN da HUANG Yanrong School of Communication Wuhan Textile UniversityWuhan 430073HubeiChina Walnut Street(Shanghai)Information Technology Co. Ltd.Shanghai 200051China College of Economics&Management Zhejiang University of Water Resources and Electric PowerHangzhou 310018ZhejiangChina Research Center for Digital Economy and Sustainable Development of Water Resources Hangzhou 310018ZhejiangChina

Image semantic segmentation is an essential technique for studying human behavior through image *** paper proposes an image semantic segmentation method for human behavior ***,an end-to-end convolutional neural network architecture is proposed,which consists of a depth-separable jump-connected fully convolutional network and a conditional random field network;then jump-connected convolution is used to classify each pixel in the image,and an image semantic segmentation method based on convolu-tional neural network is proposed;and then a conditional random field network is used to improve the effect of image segmentation of hu-man behavior and a linear modeling and nonlinear modeling method based on the semantic segmentation of conditional random field im-age is ***,using the proposed image segmentation network,the input entrepreneurial image data is semantically segmented to obtain the contour features of the person;and the segmentation of the images in the medical *** experimental results show that the image semantic segmentation method is *** is a new way to use image data to study human behavior and can be extended to other research areas.

关键词： human behavior research image semantic segmentation hop-connected full convolution network conditional random field network deep learning

N-glycosylation of Wnt3 regulates the progression of hepatocellular carcinoma by affecting Wnt/β-catenin signal pathway

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2769-2780页

作者： Xin-zhan zhang Xiao-Chuan Mo Zhu-Ting Wang Rong Sun da-Quan Sun Department of Biochemistry and Molecular Biology&Research Center for Basic Medical Sciences Guizhou Medical UniversityGuiyang 550025Guizhou ProvinceChina

BACKGROUND Wnt/FZD-mediated signaling pathways are activated in more than 90%of hepatocellular carcinoma(HCC)cell *** a well-known secretory glycoprotein,Wnt3 can interact with FZD receptors on the cell surface,thereby activating the Wnt/β-catenin signaling ***,the N-glycosylation modification site of Wnt3 and the effect of this modification on the biological function of the protein are still *** To investigate the effect of Wnt3 N-glycosylation on the biological function of HCC *** Site-directed mutagenesis was used to verify the Wnt3 N-glycosylation sites,actinomycin D treatment was used to detect the stability of Wnt3 after site-directed mutation,the binding of the N-glycosylation site-directed mutant Wnt3 to FZD7 was observed by laser confocal microscopy,and the effects of the N-glycosylation site-directed mutation of Wnt3 on the Wnt/β-catenin signaling pathway and the progression of HCC cells were detected by western blot and cell function *** Wnt3 has two N-glycosylation-modified sites(Asn90 and Asn301);when a single site at amino acid 301 is mutated,the stability of Wnt3 is weakened;the binding ability of Wnt3 to FZD7 decreases when both sites are mutated simultaneously;and the level of proteins related to the Wnt/β-catenin signaling pathway is *** proliferation,migration and invasion are also weakened in the case of single 301 site and double-site *** These results indicate that by inhibiting the N-glycosylation of Wnt3,the proliferation,migration,invasion and colony formation abilities of liver cancer cells can be weakened,which might provide new therapeutic strategies for clinical liver cancer in the future.

关键词： Wnt3 N-glycosylation Hepatocellular carcinoma Liver cancer Wnt/β-catenin FZD7

Cloud-Edge Collaborative Federated GAN Based data Processing for IoT-Empowered Multi-Flow Integrated Energy Aggregation Dispatch

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Computers, Materials & Continua 2024年第7期80卷 973-994页

作者： zhan Shi Electric Power Dispatching Control Center Guangdong Power Grid Co.Ltd.Guangzhou510030China

The convergence of Internet of Things(IoT),5G,and cloud collaboration offers tailored solutions to the rigorous demands of multi-flow integrated energy aggregation dispatch data *** generative adversarial networks(GANs)are instrumental in resource scheduling,their application in this domain is impeded by challenges such as convergence speed,inferior optimality searching capability,and the inability to learn from failed decision making ***,a cloud-edge collaborative federated GAN-based communication and computing resource scheduling algorithm with long-term constraint violation sensitiveness is proposed to address these *** proposed algorithm facilitates real-time,energy-efficient data processing by optimizing transmission power control,data migration,and computing resource *** employs federated learning for global parameter aggregation to enhance GAN parameter updating and dynamically adjusts GAN learning rates and global aggregation weights based on energy consumption constraint *** results indicate that the proposed algorithm effectively reduces data processing latency,energy consumption,and convergence time.

关键词： IoT federated learning generative adversarial network data processing multi-flowintegration energy aggregation dispatch

Revealing the Hydrogenation Mechanism of g-C3N4 for Understanding the Enhanced Photocatalytic Performance

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Revealing the Hydrogenation Mechanism of g-C3N4 for Understa...

Breakthrough in Li-mediated continuous electrosynthesis of ammonia

第十一届新型太阳能材料科学与技术学术研讨会

作者： da.zhan Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of Sciences

A simple,facile and effective method to simultaneously exfoliate and hydrogenate gCN through high concentration sulfuric acid treatment is *** hydrogenation mechanism of graphitic-CN （g-CN） is revealed by molecular structure dynamic *** is found that there are 4 different atomic sites in unit cell of g-CN are structurally available and energetically favored to be *** energetically favored hydrogenation structure of g-CN possesses the corrugated basal *** bandgap of gCN becomes larger due to *** photocatalytic performance of g-CNis dramatically enhanced after *** to that of the pristine g-CN,the enhanced photocatalytic performance of the hydrogenated g-CN is mainly attributed to the hydrogenation caused redistribution of density of states as well as the effective spatial charge separation （Figure 1）.The revealing of the hydrogenation mechanism of g-CN is of great importance for further discovering the potential applications of this metal-free material.

关键词： graphitic-C3N4 hydrogenation charge separation

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Science China Chemistry 2024年第10期67卷 3191-3192页

作者： Fei zhan Chang Yu State Key Laboratory of Chemical Resource Engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Fine Chemicals Liaoning Key Lab for Energy Materials and Chemical EngineeringSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China

Ammonia(NH3)ranks among the manufactured chemicals,with an annual production surpassing 182 million tons[1],which is an indispensable raw material for fertilizer industry and has been recognized as a promising carbon-... 详细信息

关键词： ammonia Ammonia suppl

A Review on the Mullins Effect in Tough Elastomers and Gels

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Acta Mechanica Solida Sinica 2024年第2期37卷 181-214页

作者： Lin zhan Shaoxing Qu Rui Xiao MOE Key Lab of Disaster Forecast and Control in Engineering College of Mechanics and Construction EngineeringJinan UniversityGuangzhou510632China State Key Laboratory of Fluid Power and Mechatronic System Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering MechanicsZhejiang UniversityHangzhou310027China

Tough elastomers and gels have garnered broad research interest due to their wide-ranging potential ***,during the loading and unloading cycles,a clear stress softening behavior can be observed in many material systems,which is also named as the Mullins *** this work,we aim to provide a complete review of the Mullins effect in soft yet tough materials,specifically focusing on nanocomposite gels,double-network hydrogels,and multi-network *** first revisit the experimental observations for these soft *** then discuss the recent developments of constitutive models,emphasizing novel developments in the damage mechanisms or network *** phenomenological models will also be briefly *** attention is then placed on the anisotropic and multiaxial modeling *** is demonstrated that most of the existing models fail to accurately predict the multiaxial data,posing a significant challenge for developing future anisotropic models tailored for tough gels and elastomers.

关键词： Mullins effect Double-network hydrogels Nanocomposite gels Multi-network elastomers Anisotropic damage model Multiaxial model

Gelfand-Kirillov Dimension and Reducibility of Scalar Generalized Verma Modules for Classical Lie Algebras

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Acta Mathematica Sinica,English Series 2024年第3期40卷 658-706页

作者： zhan Qiang BAI Jing JIANG School of Mathematical Sciences Soochow UniversitySuzhou 215006P.R.China E-mail:zqbai@*** jjsd6514@***

Let g be a classical complex simple Lie algebra and q be a parabolic *** M be a generalized Verma module induced from a one dimensional representation of *** M is called a scalar generalized Verma *** this paper,we will determine the reducibility of scalar generalized Verma modules associated to maximal parabolic subalgebras by computing explicitly the Gelfand-Kirillov dimension of the corresponding highest weight modules.

关键词： Generalized Verma module Gelfand-Kirillov dimension Young tableau

Miniaturized, Shared Electric and Magnetic Dipole, Pattern Diversity IoT Antenna for Sub-6 GHz Applications

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Chinese Journal of Electronics 2024年第5期33卷 1224-1233页

作者： zhan WANG Yuandan DONG University of Electronic Science and Technology of China

By using a novel meta-resonator structure, a miniaturized, surface mountable, shared aperture, and hybrid electric/magnetic dipole pattern diversity antenna is proposed for Internet of things（IoT） applications. By exploring the shared electric（E-dipole） and magnetic dipole（M-dipole） structures, a novel T-shaped split-ring resonator（SRR） with even and odd modes is presented and studied by current distributions and equivalent *** and omnidirectional（monopole-like） patterns are achieved by exciting the M-dipole and E-dipole modes of the T-shaped SRR, respectively. To validate the proposed design, this shared aperture metamaterial-inspired pattern diversity antenna with a small size of 0.295λ0× 0.0065λ0× 0.115λ0is fabricated and measured. The measured overlapped-10 dB bandwidth is from 3.40 GHz to 3.63 GHz（7.0%, covering the LTE B42 band） and the port isolation is greater than 23 dB. Both two modes achieve a good radiation efficiency better than-0.79 d B（>83.0%）.

关键词： Antenna measurements Dipole antennas Surface mount technology Switches Size measurement Aperture antennas Internet of Things Electric/magnetic dipoles Internet of things (IoT) Metamaterial-based/inspired antenna LOW-PROFILE PATCH ANTENNA RECONFIGURABLE ANTENNA MICROSTRIP ANTENNA RADIATION-PATTERN HIGH-GAIN FREQUENCY ARRAY

Mega-Constellations Based TT&C Resource Sharing: Keep Reliable Aeronautical Communication in an Emergency

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China Communications 2024年第2期21卷 1-16页

作者： Haoran Xie Yafeng zhan Jianhua Lu Department of Electronic Engineering Tsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China

With the development of the transportation industry, the effective guidance of aircraft in an emergency to prevent catastrophic accidents remains one of the top safety concerns. Undoubtedly, operational status data of the aircraft play an important role in the judgment and command of the Operational Control Center(OCC). However, how to transmit various operational status data from abnormal aircraft back to the OCC in an emergency is still an open problem. In this paper, we propose a novel Telemetry, Tracking,and Command(TT&C) architecture named Collaborative TT&C(CoTT&C) based on mega-constellation to solve such a problem. CoTT&C allows each satellite to help the abnormal aircraft by sharing TT&C resources when needed, realizing real-time and reliable aeronautical communication in an emergency. Specifically, we design a dynamic resource sharing mechanism for CoTT&C and model the mechanism as a single-leader-multi-follower Stackelberg game. Further, we give an unique Nash Equilibrium(NE) of the game as a closed form. Simulation results demonstrate that the proposed resource sharing mechanism is effective, incentive compatible, fair, and reciprocal. We hope that our findings can shed some light for future research on aeronautical communications in an emergency.

关键词： aeronautical emergency communication mega-constellation networked TT&C resource allocation stackelberg game