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Determining the nuclear temperature dependence on source neutron-proton asymmetry in heavy-ion reactions at intermediate energy

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Chinese Physics C 2023年第5期47卷 152-159页

作者：曲国峰黄宇郑华刘星泉 R.Wada 林炜平黄美容韩纪锋任培培杨振雷张鑫冷强钟 Key Laboratory of Radiation Physics and Technology of the Ministry of Education Sichuan UniversityChengdu 610064China Institute of Nuclear Science and Technology Sichuan UniversityChengdu 610064China School of Physics and Information Technology Shaanxi Normal UniversityXi'an 710119China Cyclotron Institute Texas A&M UniversityCollege StationTexas 77843USA College of Physics and Electronics information Inner Mongolia University for NationalitiesTongliao 028000China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610213China

In this article,we investigate the dependence of nuclear temperature on emitting source neutron-proton(N/Z)asymmetry with light charged particles(LCPs)and intermediate mass fragments(IMFs)generated from intermediate-velocity sources in thirteen reaction systems with different N/Z asymmetries,^(64)Zn on^(112)Sn,and^(70)Zn,^(64)Ni on^(112,124)Sn,^(58,64)Ni,^(197)Au,and^(232)Th at 40 MeV/*** apparent temperature values of LCPs and IMFs from different systems are deduced from the measured yields using two helium-related and eight carbon-related double isotope ratio thermometers,***,the sequential decay effect on the experimental apparent temperature deduction with the double isotope ratio thermometers is quantitatively corrected explicitly with the aid of the quantum statistical *** present treatment is an improvement compared to our previous studies in which an indirect method was adopted to qualitatively consider the sequential decay effect.A negligible N/Z asymmetry dependence of the real temperature after the correction is quantitatively addressed in heavy-ion reactions at the present intermediate energy,where a change of o.1 units in source N/Z asymmetry corresponds to an absolute change in temperature of an order of 0.03 to 0.29 MeV on average for LCPs and *** conclusion is in close agreement with that inferred qualitatively via the indirect method in our previous studies.

关键词： nuclear temperature N/Z asymmetry dependence Albergo thermometer sequential decay correction heavy-ion reactions at intermediate energy

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Infrared and visible image fusion method based on anisotropic diffusion and content aware fusion strategy 11

Infrared and visible image fusion method based on anisotropi...

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11th International Symposium on Precision Mechanical Measurements

作者： Zhang, Lin Deng, Lei Zhu, Lianqing Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science & Technology University Beijing100192 China Beijing Laboratory of Optical Fiber Sensing and System Beijing Information Science & Technology University Beijing100016 China Guangzhou Nansha Intelligent Photonic Sensing Research Institute Guangdong Province Guangzhou511462 China

ISBN: (纸本)9781510680296

Infrared and visible image fusion is a process whereby infrared and visible spectral images are combined to enhance the visual quality of the resulting image and to retain more detailed information. Traditional infrared fusion techniques tend to suffer from information loss and lack of clarity of texture details. To retain more detailed information and improve image quality in infrared and visible image fusion, a method is proposed which involves extracting the base and detail layers using Gaussian filtering and anisotropic diffusion, respectively. The base layer is then fused using an average fusion strategy, the detail layer is fused based on a content-aware fusion strategy, and the processed base and detail layer images are fused into a final image. Experiments were conducted on several scenes from publicly available datasets. The experimental results demonstrate that the method proposed in this paper can generate fused images with clear targets and rich details, while simultaneously exhibiting a notable enhancement in indicators such as average gradient and spatial frequency. © 2024 SPIE.

关键词： Image fusion

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A reposition algorithm for e-hailing based on quantum annealing and intuitive reasoning

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Intelligent and Converged Networks 2024年第4期5卷 317-335页

作者： Chao Wang Yiyun Shi Sumin Wang Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai UniversityShanghai 200444China School of Information Engineering Ganzhou Key Laboratory of Cloud Computing and Big Data ResearchGannan University of Science and TechnologyGanzhou 341000China

Currently,the challenge lies in the traditional intelligent algorithm’s ability to effectively address the e-hailing repositioning *** identifying the underlying characteristics in extensive traffic data within a limited timeframe is difficult,ultimately preventing the achievement of the most optimal *** paper suggests a hybrid computing architecture involving reinforcement learning and quantum annealing based on intuitive *** reasoning aims to enhance performance in scenarios with poor system robustness,complex tasks,and diverse goals.A deep learning model is constructed,trained to extract scene features,and combined with expert knowledge,then transformed into a quantum annealable *** final strategy is obtained using a D-wave quantum computer with quantum tunneling effect,which helps in finding optimal solutions by jumping out of local suboptimal *** on 400000 real data,four algorithms are compared:minimum-cost flow,sequential markov decision process,hot-dot strategy,and driver-prefer *** average total revenue increases by about 10%and vehicle utilization by about 15%in various *** summary,the proposed architecture effectively solves the e-hailing reposition problem,offering new directions for robust artificial intelligence in big data decision problems.

关键词： intuitive reasoning reinforcement learning quantum annealing

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Electromagnetic Scattering Analysis with the Reduced-Order Spectral-Element Time-Domain Method 9

Electromagnetic Scattering Analysis with the Reduced-Order S...

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9th Symposium on Novel Photoelectronic Detection technology and Applications

作者： Ma, Lixian Fan, Zhenhong Bao, Huaguang Ding, Dazhi Anhui Provincial Key Laboratory of Electronic Information System Hefei230601 China Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9781510664432

The reduced-order spectral-element time-domain method based on the proper orthogonal decomposition method is proposed to solve the electromagnetic scattering problem based on wave equation. The spectral-element time-domain method has been proved to have the advantages of high precision and block-diagonal mass matrix, so it is widely used to solve the electromagnetic scattering problem. The POD basis is obtained by the eigenvalues and eigenvectors of the correlation matrix, which is created by the snapshot matrix whose columns are the snapshot vectors extracted from the SETD simulation. It is proved that the method can reduce the computational cost on the basis of maintaining an acceptable accuracy. Numerical results demonstrate the advantage of the reduced-order SETD method. © 2023 SPIE.

关键词： Wave equations

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engineering Program 'Freshmen Motivation Week' 53

Engineering Program 'Freshmen Motivation Week'

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53rd IEEE ASEE Frontiers in Education International Conference, FIE 2023

作者： Brito, Claudio R Ciampi, Melany M Copec Science and Education Research Organization Santos Brazil World Organization on System Engineering and Information Technology Wcseit Braga Portugal

ISBN: (纸本)9798350336429

- COPEC's educational research team designed the engineering Program Freshmen Motivation Week for 2023. It was specially designed to provide first-year engineering students with time to receive guidance and be motivated to keep going even when things are not going well. just as good in years to come. The proposal is to show future engineers the good and bad sides of any undertaking in life and that giving up is not an option. They have special classes the week before the beginning of the semester with special subjects related to 'thinking outside the box', with practical exercises and guest speakers. The central core is the vision of the whole of being an engineer with a focus on the aspect of contributions to human well-being. This is a proposal for an engineering course at a private university, whose objective is student retention over the years. A first experiment was carried out and another week is planned for the next semester to reinforce and collect data on the effects of the 'Out of the Box' week, as it was designated. They are 100% in-class, and face-to-face due to the nature of the activities carried out throughout the week. © 2023 IEEE.

关键词： Creative Flow Motivation Perseverance Retention Special Classes

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Research on active equalization algorithm of lithium battery based on frequent item statistics and transferred power 11

Research on active equalization algorithm of lithium battery...

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11th International Symposium on Precision Mechanical Measurements

作者： Li, Kun Dong, Mingli Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science and Technology University Beijing100192 China Beijing Laboratory of Optical Fiber Sensing and System Beijing Information Science & Technology University Beijing100016 China Guangzhou Nansha Intelligent Photonic Sensing Research Institute Guangdong Province Guangzhou511462 China

ISBN: (纸本)9781510680296

Aiming at the problem that precise equalization can not be carried out due to the poor consistency of the single battery, an active equalization method based on frequent item statistics and transfer power is proposed. The equalization basis is transformed from open circuit voltage, operating voltage, and state of charge (SOC) to transfer power. The active equalization topology is constructed with a single switched capacitor as the core. The data stream frequent pattern mining technology is introduced to count the transfer power summary information during the charge and discharge cycle of the single battery. The order and number of battery equalization are intelligently selected by the equalization algorithm. The capacitance size, voltage noise, transfer power summary information extraction process, and equalization strategy comparison simulation experiments were carried out. The proposed active equalization method can accurately select the number and sequence of battery equalization cells, minimize the back-and-forth flow of energy, effectively prolong the time of a single charge and discharge cycle, and improve the efficiency of the active equalization algorithm. © 2024 SPIE.

关键词： State of charge

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Infrared and visible image fusion method based on saliency detection and multi-scale texture detail feature extraction 11

Infrared and visible image fusion method based on saliency d...

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11th International Symposium on Precision Mechanical Measurements

作者： Liu, Chenhua Zhang, Lin Deng, Lei Guo, Chentong Lu, Xitian Zhu, Lianqing Dong, Mingli Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument Beijing Information Science & Technology University Beijing100192 China Beijing Laboratory of Optical Fiber Sensing and System Beijing Information Science & Technology University Beijing100016 China Guangzhou Nansha Intelligent Photonic Sensing Research Institute Guangdong Province GuangZhou511462 China

ISBN: (纸本)9781510680296

A single Visible (VIS) image or Infrared (IR) image cannot clearly present the texture details and heat source information of the scene. The fusion task of IR images and VIS can combine the respective characteristics of the two types of modalities to form a new image with rich details, which can better serve advanced vision tasks. Firstly, Kmeans and connected component analysis are used to obtain the IR saliency map. Then, we use Gaussian pyramid to perform multi-scale decomposition of VIS images. Use Gabor filter to extract texture to generate VIS detail map. Finally we use the adaptive fusion rule to obtain high-quality fused images. By conducting a large number of experiments on TNO and LLVIP, and compared them with existing image fusion methods. The experimental results show that our proposed algorithm has potential performance in both quantitative and qualitative evaluations, and has real-time performance during the fusion process. © 2024 SPIE.

关键词： Gabor filters

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A Derivative Matrix-Based Covert Communication Method in Blockchain

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Computer systems science & engineering 2023年第7期46卷 225-239页

作者： Xiang Zhang Xiaona Zhang Xiaorui Zhang Wei Sun Ruohan Meng Xingming Sun School of Computer and Software Nanjing University of Information Science&TechnologyNanjing210044China School of Hydrology and Water Resources Nanjing University of Information Science&TechnologyNanjing210044China Wuxi Research Institute Nanjing University of Information Science&TechnologyWuxi214100China Key Laboratory of Hydrometeorological Disaster Mechanism andWarning ofMinistry ofWater Resources Nanjing210044China Engineering Research Center of Digital Forensics Ministry of EducationJiangsu Engineering Center of Network MonitoringSchool of Computer and SoftwareNanjing University of Information Science&TechnologyNanjing210044China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) NanjingUniversity of Information Science&TechnologyNanjing210044China School of Automation Nanjing University of Information Science&TechnologyNanjing210044China School of Computer Science Engineering Nanyang Technological UniversitySingapore

The data in the blockchain cannot be tampered with and the users are anonymous,which enables the blockchain to be a natural carrier for covert ***,the existing methods of covert communication in blockchain suffer from the predefined channel structure,the capacity of a single transaction is not high,and the fixed transaction behaviors will lower the concealment of the communication ***,this paper proposes a derivation matrix-based covert communication method in *** uses dual-key to derive two types of blockchain addresses and then constructs an address matrix by dividing addresses into multiple layers to make full use of the redundancy of ***,to solve the problem of the lack of concealment caused by the fixed transaction behaviors,divide the rectangular matrix into square blocks with overlapping regions and then encrypt different blocks sequentially to make the transaction behaviors of the channel addresses match better with those of the real ***,the linear congruence algorithm is used to generate random sequence,which provides a random order for blocks encryption,and thus enhances the security of the encryption *** results show that this method can effectively reduce the abnormal transaction behaviors of addresses while ensuring the channel transmission efficiency.

关键词： Covert communication blockchain concealment security capacity derivation

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MSF-Net: A Multilevel Spatiotemporal Feature Fusion Network Combines Attention for Action Recognition

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Computer systems science & engineering 2023年第11期47卷 1433-1449页

作者： Mengmeng Yan Chuang Zhang Jinqi Chu Haichao Zhang Tao Ge Suting Chen School of Electronic and Information Engineering Nanjing University of Information Science and TechnologyNanjing210044China Jiangsu Key Laboratory of Meteorological Observation and Information Processing Nanjing210044China

An action recognition network that combines multi-level spatiotemporal feature fusion with an attention mechanism is proposed as a solution to the issues of single spatiotemporal feature scale extraction,information redundancy,and insufficient extraction of frequency domain information in channels in 3D convolutional neural ***,based on 3D CNN,this paper designs a new multilevel spatiotemporal feature fusion(MSF)structure,which is embedded in the network model,mainly through multilevel spatiotemporal feature separation,splicing and fusion,to achieve the fusion of spatial perceptual fields and short-medium-long time series information at different scales with reduced network parameters;In the second step,a multi-frequency channel and spatiotemporal attention module(FSAM)is introduced to assign different frequency features and spatiotemporal features in the channels are assigned corresponding weights to reduce the information redundancy of the feature ***,we embed the proposed method into the R3D model,which replaced the 2D convolutional filters in the 2D Resnet with 3D convolutional filters and conduct extensive experimental validation on the small and medium-sized dataset UCF101 and the largesized dataset *** findings revealed that our model increased the recognition accuracy on both *** on the UCF101 dataset,in particular,demonstrate that our model outperforms R3D in terms of a maximum recognition accuracy improvement of 7.2%while using 34.2%fewer *** MSF and FSAM are migrated to another traditional 3D action recognition model named C3D for application *** test results based on UCF101 show that the recognition accuracy is improved by 8.9%,proving the strong generalization ability and universality of the method in this paper.

关键词： 3D convolutional neural network action recognition MSF FSAM

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An Anti-interference network of CNN-BiGRU for Pipeline Corrosion Recognition with Fiber Optic DAS system

An Anti-interference network of CNN-BiGRU for Pipeline Corro...

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CLEO: Applications and technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Zhang, Shixiong Li, Hao Fan, Cunzheng Yan, Baoqiang Yan, Zhijun Sun, Qizhen School of Optical and Electronic Information Optics Valley Laboratory National Engineering Research Center of Next Generation Internet Access-system Huazhong University of Science and Technology Hubei Wuhan430074 China PGMF School of Physics Huazhong University of Science and Technology Hubei Wuhan430074 China

ISBN: (纸本)9781957171395

An anti-interference network of CNN-BiGRU for pipeline corrosion recognition assisted with fiber optic DAS system is proposed. For the recognition of seven corrosion degrees in high-interference environment, the proposed model trained on data from one pipeline, can achieve the average accuracy of 83.4% for other pipelines. © Optica Publishing Group 2024, © 2024 The Author(s)

关键词： Pipeline corrosion

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