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Optimizing Cost-Efficient SFC Routing in NTNs: A Novel Transformer-Ant Colony Optimization Framework

IEEE Transactions on Vehicular technology 2024年第5期74卷 8037-8051页

作者： Li, Yuanfeng Zhang, Qi Yao, Haipeng Xin, Xiangjun Zhao, Yi Gao, Ran Beijing Key Laboratory of Space-ground Interconnection and Convergence State Key Laboratory of Information Photonics and Optical Communications School of Electronic Engineering Beijing100876 China National University of Defense Technology Science and Technology on Information Systems Engineering Laboratory Changsha410073 China School of Information and Communication Engineering Beijing100876 China Beijing Beijing102300 China Beijing Institution of Technology School of Information and Electronics Beijing100081 China

Non-Terrestrial Networks (NTN), including Low Earth Orbit (LEO) satellite constellations, aim to provide connectivity to remote and underserved areas. These networks now support complex network services leveraging Service Function Chaining (SFC), which sequences service functions such as firewalls and load balances to customize network behavior. In this paper, a comprehensive system model for SFC deployment in NTN is presented. The SFC deployment problem is regarded as comprising two parts: routing and VNF embedding. To improve the cost efficiency of SFC deployment in NTN, a Transformer-Ant Colony Optimization approach has been proposed. The employment of the Transformer architecture to encode SFC requests and the assistance of ACO with neural network modules in identifying optimal paths for VNF embedding are pioneered in this work. The simulation results confirm that our approach achieves superior performance in terms of cost, communication success rate, and delay, demonstrating its potential for efficient SFC deployment in NTN scenarios. © 1967-2012 IEEE.

关键词： Ant colony optimization

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Thermal engineering in ALD-grown ZGO thin films for high-performance photodetectors

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材料科学技术（英文版） 2025年第6期209卷 19-26页

作者： Si-Tong Ding Yu-Chang Chen Cai-Yu Shi Lei Shen Qiu-Jun Yu Lang-Xi Ou Ze-Yu Gu Na Chen Ting-Yun Wang David Wei Zhang Hong-Liang Lu State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics & SystemsSchool of MicroelectronicsFudan UniversityShanghai 200433China Zhangjiang Fudan International Innovation Center Shanghai 201203China National Integrated Circuit Innovation Center Shanghai 201203China Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai Institute Communication and Data ScienceShanghai UniversityShanghai 200444China State Key Laboratory of ASIC and System Shanghai Institute of Intelligent Electronics & SystemsSchool of MicroelectronicsFudan UniversityShanghai 200433China Zhangjiang Fudan International Innovation Center Shanghai 201203China National Integrated Circuit Innovation Center Shanghai 201203China Jiashan Fudan Institute Jiaxing 314100China

Doped gallium oxide-based thin films are a class of wide-band semiconductor materials with the ad-vantages of chemically stable,tunable bandgap,and offer the benefit of ultraviolet *** order to obtain photodetectors(PDs)with superior response,higher demands are placed on the quality of growth and processing of doped *** this work,Zn-doped ternary metal oxide ZnGaO(ZGO)thin films were grown using the atomic layer deposition technique and annealed at different temperatures under an oxy-gen *** results showed that the high-quality ZGO films with good uniformity,high visible light transmittance,low roughness,and significant reduction of oxygen vacancies were obtained after ***,metal-semiconductor-metal PDs were prepared based on the studied ZGO *** responsivity(R),detectivity(D*),and external quantum efficiency(EQE)of the optimized device are 61.8 A W-1,1.2 x 1012 Jones,and 255.9％,*** to the unannealed device,the an-nealed ZGO PD achieves a maximum 309-fold increase in *** thermal engineering work may provide a strong reference for the development of low-cost,large-area,high-performance ultraviolet *** it also broadens the application of ternary metal oxides in optoelectronics.

关键词： Atomic layer deposition Oxygen annealing ZGO thin films Photodetector Ultraviolet detection

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A Single Image Derain Method Based on Residue Channel Decomposition in Edge Computing

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Intelligent Automation & Soft Computing 2023年第8期37卷 1469-1482页

作者： Yong Cheng Zexuan Yang Wenjie Zhang Ling Yang Jun Wang Tingzhao Guan School of Computer Science Nanjing University of Information Science and TechnologyNanjing210044China School of Automation Nanjing University of Information Science and TechnologyNanjing210044China School of Geographical Sciences Nanjing University of Information Science&TechnologyNanjing210044China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing100101China School of Applied Technology Nanjing University of Information Science and TechnologyNanjing210044China

The numerous photos captured by low-price Internet of Things(IoT)sensors are frequently affected by meteorological factors,especially *** causes varying sizes of white streaks on the image,destroying the image texture and ruining the performance of the outdoor computer vision *** methods utilise training with pairs of images,which is difficult to cover all scenes and leads to domain *** addition,the network structures adopt deep learning to map rain images to rain-free images,failing to use prior knowledge *** solve these problems,we introduce a single image derain model in edge computing that combines prior knowledge of rain patterns with the learning capability of the neural ***,the algorithm first uses Residue Channel Prior to filter out the rainfall textural features then it uses the Feature Fusion Module to fuse the original image with the background feature *** results in a pre-processed image which is fed into Half Instance Net(HINet)to recover a high-quality rain-free image with a clear and accurate structure,and the model does not rely on any rainfall *** results on synthetic and real-world datasets show that the average peak signal-to-noise ratio of the model decreases by 0.37 dB on the synthetic dataset and increases by 0.43 dB on the real-world dataset,demonstrating that a combined model reduces the gap between synthetic data and natural rain scenes,improves the generalization ability of the derain network,and alleviates the overfitting problem.

关键词： Single image derain method edge computing residue channel prior feature fusion module

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Si/Si3N4/Ag hybrid nanocavity: a platform for enhancing light-matter interaction

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Photonics Research 2025年第3期13卷 709-720页

作者： TIANQI PENG ZHUO WANG SHULEI LI LIDAN ZHOU SHIMEI LIU YUHENG MAO MINGCHENG PANMAI WEICHEN HE SHENG LAN Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices School of Optoelectronic Science and EngineeringSouth China Normal University School of Optoelectronic Engineering Guangdong Polytechnic Normal University State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-sen University School of Electrical and Electronic Engineering Nanyang Technological University GBA Branch of Aerospace Information Research Institute Chinese Academy of Sciences Guangdong Provincial Key Laboratory of Terahertz Quantum Electromagnetics

High-index dielectric nanoparticles supporting strong Mie resonances, such as silicon （Si） nanoparticles, provide a platform for manipulating optical fields at the subwavelength scale. However, in general, the quality factors of Mie resonances supported by an isolated nanoparticle are not sufficient for realizing strong light-matter interaction. Here, we propose the use of dielectric-metal hybrid nanocavities composed of Si nanoparticles and silicon nitride/silver （Si3N4∕Ag） heterostructures to improve light-matter interaction. First, we demonstrate that the nonlinear optical absorption of the Si nanoparticle in a Si∕Si3N4∕Ag hybrid nanocavity can be greatly enhanced at the magnetic dipole resonance. The Si∕Si3N4∕Ag nanocavity exhibits luminescence burst at substantially lower excitation energy （～20.5 pJ） compared to a Si nanoparticle placed on a silica substrate （～51.3 pJ）. The luminescence intensity is also enhanced by an order of magnitude. Second, we show that strong exciton-photon coupling can be realized when a tungsten disulfide （WS2） monolayer is inserted into a Si∕Si3N4∕Ag *** such a system is excited by using s-polarized light, the optical resonance supported by the nanocavity can be continuously tuned to sweep across the two exciton resonances of the WS2monolayer by simply varying the incident angle. As a result, Rabi splitting energies as large as ～146.4 meV and ～110 meV are observed at the A-and B-exciton resonances of the WS2monolayer, satisfying the criterion for strong exciton-photon *** proposed nanocavities provide, to our knowledge, a new platform for enhancing light-matter interaction in multiple scenarios and imply potential applications in constructing nanoscale photonic devices.

关键词： Light matter interactions Nonlinear absorption Optical absorption Optical fields Photonic devices Q factor

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Ce-UiO-66 nanozymes with charge-regulated uricase-like activity for enzyme/reagent-free detection of uric acid

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Nano Research 2025年第2期18卷 675-686页

作者： Zhixiong Guo Da Chen Wei Gao Yongquan Qu Zhimin Tian Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710054China State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China

Designing highly performed uricase-like nanozymes through enzymatic-like colorimetric analysis system is of vital significance for the quantitative detection of uric acid(UA).Herein,series of Ce-UiO-66 nanozymes with different surface charges through the ligand engineering strategy were rationally designed and synthesized as efficient uricase mimics with tailorable uricase-like activities to catalytically convert UA into allantoin and ***,by tuning the functional groups of 1,4-benzoic acid ligands,we explored the relationships between the surface charges of Ce-UiO-66-X(X=H,NO_(2),Br,CH_(3),and OH)nanozymes and their uricase-like *** them,Ce UiO-66-CH_(3) with the moderate surface charge exhibited optimal substrate adsorption and product desorption,displaying the highest uricase-like ***,H2O2,as the product of UA oxidation,enabled Ce-UiO-66-CH_(3) itself as a dose-dependent chromogenic substrate of H_(2)O_(2),giving a white-to-orange color evolution due to the Ce-UiO-66-CH_(3)-to-CeO_(2) phase ***,a smartphone-assisted all-in-one enzyme/reagent-free biosensor based on Ce-UiO-66-CH_(3) was established for the precise visual detection of UA analysis,which was featured by a wide detection range(31–4000µM),a high sensitivity(limit of detection:8.9µM),a rapid response(-3 min),a high structural stability,and a high anti-interference ability.

关键词： Ce-UiO-66 uricase-like nanozyme colorimetric uric acid analysis enzyme/reagent-free detection smartphone

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Nonlocal Huygens'meta-lens for high-qualityfactor spin-multiplexing imaging

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Light(science & Applications) 2025年第3期14卷 695-702页

作者： Jin Yao Yubin Fan Yunhui Gao Rong Lin Zhihui Wang Mu Ku Chen Shumin Xiao Din Ping Tsai Department of Electrical Engineering City University of Hong KongKowloonHong Kong SARChina Centre for Biosystems Neuroscienceand NanotechnologyCity University of Hong KongKowloonHong Kong SARChina State Key Laboratory of Terahertz and Milimeter Waves City University of Hong KongKowloonHong Kong SARChina State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information SystemShenzhen Graduate SchoolHarbin Institute of TechnologyShenzhen 518055China Pengcheng Laboratory ShenzhenChina

Combining bright-feld and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects,which is particularly beneficial for biological *** metalenses present promising candidates for achieving this ***,current multiplexing meta-lenses lack spectral modulation,and crosstalk between different wavelengths hampers the imaging quality,especilly for biological samples requiring precise wavelength ***,we experimentally demonstrate the nonlocal Huygens'meta-lens for high-quality-factor spin-multiplexing ***-bound states in the continuum(q-BlCs)are excited to provide a high quality factor of 90 and incident-angle *** generalized Kerker condition,driven by Fano-like interactions between q-BIC and in-plane Mie resonances,breaks the radiation symmetry,resulting in a transmission peak with a geometric phase for polarization-converted light,while unconverted light exhibits a transmission dip without a geometric *** polarization conversion efficiency of 65%is achieved,accompanied by a minimal unconverted value,surpassing the theoretical limit of traditional thin nonlocal *** these effects,the output polarization-converted state exhibits an efficient wavelengthselective focusing phase *** unconverted counterpart serves as an effective spatial frequency filter based on incident-angular dispersion,passing high-frequency edge ***-field imaging and edge detection are thus presented under two output spin *** work provides a versatile framework for nonlocal metasurfaces,boosting biomedical imaging and sensing applications.

关键词： nonlocal Huygensmeta lens biological imagingmultiplexing metalenses bright field imaging edge enhanced imaging high quality factor spin multiplexing imaging extracting complex morphological information biological samples spectral modulationand

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ResPocket: A Multi-Scale Feature Fusion Method for Improving Protein Binding Site Detection

ResPocket: A Multi-Scale Feature Fusion Method for Improving...

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2024 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2024

作者： Lin, Xiaoli Yang, Wenli Chen, Yaoyu Liao, Xiongwei Wu, Zimo Zhang, Xiaolong Wuhan University of Science and Technology Hubei Key Laboratory of Intelligent Information Processing and Real-Time Industrial System School of Computer Science and Technology China

ISBN: (纸本)9798350386226

Accurate detection of protein binding sites is critical for facilitating drug design. Most existing models rely on features at a single scale, leading to the loss of crucial global or local structural information. Therefore, this paper proposes a novel 3D model (ResPocket), to fully capture the multi-scale features of proteins. First, Residual Block (ResB) based on U-Net is used to capture features from different scales, including global and local structural information. Then, an Enhanced Attention Module (EAM) is designed to encode semantic dependencies by effectively capturing global context information. In addition, ResPocket focuses on learning local information about protein pockets with Self-Guided Mask Block (SGMB), to increase the robustness of the overall model and reduce its dependence on external mask guidance. Experimental results show that ResPocket improves by an average of 4.89% on DCA Top-n, by an average of 1.48% and 2.25% on DCC and DVO metrics, respectively. © 2024 IEEE.

关键词： Binding sites

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High Efficient Automatic Power/Ground Layout Routing Algorithm for Analog ICS

High Efficient Automatic Power/Ground Layout Routing Algorit...

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2023 China Semiconductor technology International Conference, CSTIC 2023

作者： Zuo, Jiaxin. Li, Fei. Wan, Jing. Fudan University State Key Lab of Asic and System School of Information Science and Engineering Shanghai China Suzhou Foohu Technology Co. Ltd. China

ISBN: (纸本)9798350311006

In this work, we explored an efficient automatic layout routing algorithm for connecting the power and ground pins in analog integrated circuits. A rectilinear minimal spanning tree (RMST) algorithm for two sets of pins is developed, in which minimal spanning tree is used to form the initial connections between pins. The obstacle-avoiding maze routing algorithm is used to break and reconnect the power and ground nets to avoid any short circuit. The genetic algorithm (GA) is further introduced to optimize the total connection wirelength. We also expanding the wire width to avoid electromigration and IR-drop. © 2023 IEEE.

关键词： Routing algorithms

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High-beam-quality single-frequency 10-mJ nanosecond fiber and a solid-state hybrid laser front-end system at a 1-kHz repetition rate

Optics Continuum

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Optics Continuum 2025年第4期4卷 915-923页

作者： Kong, Zhiwei Cheng, Tianxiang Zhao, Zhigang Liu, Zhaojun School of Information Science and Engineering Shandong University Qingdao266237 China Key Laboratory of Laser and Infrared System Ministry of Education Shandong University Qingdao266237 China Shandong Provincial Key Laboratory of Laser Technology and Application Shandong University Qingdao266237 China

A compact single-frequency nanosecond fiber & solid-state hybrid laser system at 1030 nm is presented. The seed source, a continuous wave distributed feedback (DFB) laser diode, was first externally modulated with a repetition rate of 1.5 MHz and a pulse duration of 10 ns, whose repetition rate was further lowered to 1 kHz by a pulse picker. Afterwards, three-stage end-pumped Yb:YAG crystal amplifiers were employed for energy scaling. Finally, an average power of 12 W was obtained with a repetition rate of 1 kHz and a linewidth of ∼180 MHz, corresponding to approximately four times the Fourier transform limit (FTL). The beam quality factor (M2) was measured to be 1.18 and 1.20 for the horizontal and vertical directions, respectively. In the future, this high-beam quality front-end laser will be used as the seed source for nanosecond disk laser amplifiers. © 2025 Optica Publishing Group.

关键词： Pulse repetition rate

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Intensified Tropical Cyclones in Global Climate Simulations Employing a High-Wind Drag Relation over Sea Surface

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Journal of Climate 2025年第10期38卷 2205-2223页

作者： Wei, Wei Lu, Yixiong Yang, Shunan Liu, Yiming Wu, Tongwen Song, Zhenya Qiao, Fangli Li, Yubin Wu, Fanghua Rong, Xinyao Li, Jianglong CMA Earth System Modeling and Prediction Centre China Meteorological Administration Beijing China State Key Laboratory of Severe Weather Meteorological Science and Technology CMA Earth System Modeling and Prediction Centre Beijing China National Meteorological Centre China Meteorological Administration Beijing China First Institute of Oceanography Key Laboratory of Marine Science and Numerical Modeling Ministry of Natural Resources Qingdao China School of Atmospheric Physics Nanjing University of Information Science and Technology Nanjing China

Accurate parameterization of momentum fluxes at high winds across the air–sea interface is crucial for realistically simulating the surface wind fields of tropical cyclones (TCs). Climate models often struggle to reproduce observed TC intensities, particularly surface wind speeds. This study evaluates the performance of a revised surface drag scheme with a capping drag coefficient at high wind speeds in global climate models (GCMs). Our results indicate that the revised surface drag scheme significantly improves the representation of TCs in a statistical sense: (i) Not only the mature intensity but also the maximum 10-m wind speeds throughout the TC life cycle are largely enhanced;(ii) biases in the pressure–wind relationship are notably alleviated, exhibiting reasonable agreement with observations;and (iii) other TC statistical features, such as TC number, central sea level pressure, individual lifetime, and intensification rate, show relatively minor sensitivity to the surface drag schemes. The main reason for the superiority of the revised high-wind drag relation is that the lower drag coefficient in high-wind conditions significantly increases the maximum potential intensity (MPI), indicating a higher theoretical limit for TC intensities. These findings are consistent across different model versions and resolutions, highlighting the robustness of the high-wind surface drag parameterization in controlling the simulated surface wind speeds of TCs in GCMs. © 2025 American Meteorological Society.

关键词： Tropical cyclone

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