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7th International Conference on Information, Cybernetics, and Computational Social Systems, ICCSS 2020

作者： Li, Jiawei Zuo, Yi Li, Yiliang Wang, Yang Li, Tieshan Philip Chen, C.L. Navigation College Dalian Maritime University Dalian Liaoning China School of Automation Engineering University of Electronic Science and Technology of China Chengdu Sichuan China Fauctly of Science and Technology South China University of Technology Macau China

ISBN: (纸本)9781728162461

In order to solve the problem of waste of resources and low monitoring efficiency caused by Container Freight Station (CFS) safety helmet detection mainly relying on manual operations. The Broad Learning System (BLS) optimized by Genetic Algorithm (GA) is selected as the image recognition classifier for helmet detection, which accurately and quickly marks the images of CFS workers who do not wear safety helmet in the video and issues an early warning. GA is a method of searching for the optimal solution by simulating the natural evolution process. While comparing it with initial BLS, BLS optimized by GA (GA-BLS) can automatically constructs network structure and tunes hyperparameters. Furthermore, using proposed method in safety helmet data set reaches a lower error, reduces operation time than initial BLS and other image detection method, such as support vector machine (SVM). © 2020 IEEE.

关键词： Genetic algorithms

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Synergistic dispersion strengthening of Fe-Cr alloys by oxides and carbides: Microstructure and mechanical property enhancement

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Journal of Alloys and Compounds 2025年 1035卷

作者： Tuowen Chen Jingyi Tuo Yihao Wu Hui Wang Yongduo Sun Xuefei Huang College of Materials Science and Engineering Sichuan University Chengdu 610065 China National Key Laboratory of Nuclear Reactor Technology Nuclear Power Institute of China Chengdu Sichuan 610213 China

Fe-Cr alloys were fabricated using powder metallurgy (PM) with varying additions of ZrC (0–1.5 wt%) to investigate the influence on microstructure and mechanical properties. The resulting alloys exhibited a bimodal grain structure with dispersed nano-oxides (TaO, ZrO 2 ) and carbides (ZrC). The alloy containing 1.5 wt% ZrC demonstrated the most favourable combination of properties, achieving a yield strength of 1373 MPa and an elongation of 11.9 % at room temperature, which is attributed to synergistic dispersion strengthening. At 700°C, this alloy retained a yield strength of 470 MPa, surpassing that of many oxide dispersion-strengthened alloys. Incorporating ZrC refined the microstructure, promoted phase transformations, and inhibited the formation of coarse oxides, enhancing strength and ductility.

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Direct Ink Writing of Bi2te3-Based Thermoelectric Materials Induced by Rheological Design

SSRN

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SSRN 2022年

作者： Wang, Zhengshang Cui, Wen Yuan, Hao Kang, Xiaoli Zheng, Zhou Hu, Qiujun Qiu, Wenbin Tang, Jun Cui, Xudong Sichuan Research Center of New Materials 596 Yinhe Road Shuangliu Chengdu610200 China Institute of Chemical Materials China Academy of Engineering Physics Mianyang621900 China Key Laboratory of Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology Sichuan University Chengdu610064 China College of Physics Sichuan University Chengdu610065 China

Waste heat recovery systems built with thermoelectric (TE) materials offer promising means to generate electricity from waste heat directly, if TE materials or devices with controllable shapes are created, through direct ink writing (DIW). However, the nature of TE inks used for DIW must be modified with appropriate rheology to maintain stability and facilitate extrusion, as well as proper mechanical properties to resist deformation. Here, we report Bi2Te3-based inks modified with additives that allow direct printing of tunable architectures. The polyelectrolyte additives-induced adsorbed layers on the surface of TE particles are shown to significantly improve the stability and viscoelasticity of inks. Besides, the improved inks modified with methylcellulose additives exhibit an apparent enhancement of strength properties, thereby enabling the predesigned shapes to hold the successive layers printed above. Using charge control and framework reinforcement, the Bi2Te3-based inks print a series of architectures with porous structures, which largely reduce thermal conductivities. As a result, our 3D-printed materials display high figures of merit ZT of 0.65 and 0.53 for p- and n-type. This work explores how additives can influence both rheological properties, printability, and microstructures, which pave the way to construct complex architectures and improve TE performance for structural and functional applications. © 2022, The Authors. All rights reserved.

关键词： Additives

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Data Mining and Business Intelligence in SME Customer Relationship Value Analysis 3

Data Mining and Business Intelligence in SME Customer Relati...

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3rd International Conference on Artificial Intelligence and Advanced Manufacture, AIAM 2021

作者： Jia, Siyuan Pan, Minming Sun, Wenlong Joyce, Harubwira Nyampinga Wang, Yan Zheng, Wenfeng Shanghai Urban Construction Vocational College Shanghai201415 China The Indiana University Kelley School of Business BloomingtonIN47405 United States Accounting School Shanghai University of International Business and Economics Shanghai201620 China School of Automation Engineering University of Electronic Science and Technology Chengdu611731 China

ISBN: (纸本)9781665417327

As a tool and system, business intelligence plays a vital role in the strategic planning process of a business company. Business intelligence provides companies with functions such as collecting, storing, accessing, and analyzing company data. In the traditional business model, most companies use human resources to track these large amounts of data and information. And business intelligence provides an automated data processing method that significantly improves efficiency. During a customer relationship management service system, a large amount of data will be generated and stored. With this natural data advantage, data analysis has more possibilities in customer relationship management service systems. Based on the business intelligence system, this paper analyzes the data of the customer system. It puts forward the K-means clustering method to analyze the customer quality, the fuzzy set clustering algorithm to examine whether the customer is active. The rough set algorithm to judge to improve the user activity decision analysis. The proposed intelligent business system brings new technical solutions to the maintenance of current corporate customer relationships. © 2021 IEEE.

关键词： Sales

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Nonlinear Model Predictive Control of Shipboard Boom Cranes with Ship Roll Motion

Nonlinear Model Predictive Control of Shipboard Boom Cranes ...

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Chinese automation Congress (CAC)

作者： Yuchi Cao Xiangjie Zhao Tieshan Li Navigation College Dalian Maritime University Dalian China School of Automation Engineering University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781665426480

In this paper, a nonlinear model predictive controller for shipboard boom cranes is proposed, while considering the ship roll motion caused by sea waves. After coordination transformation, the ship roll motion becomes part of new state variable, which can simplify the controller design significantly by making the time-varying reference value to be constants. All physical state constraints and input saturation are well considered and handled simultaneously by resorting to the virtues of nonlinear model predictive control (NMPC). CasADi and multiple shooting technique are employed to improve the computation efficiency of NMPC, thus the real-time implementation for shipboard boom cranes can be carried out. Moreover, simulations are elaborately designed to verity the effectiveness of the proposed controllers, satisfied performances are obtained.

关键词： Cranes automation Computational modeling Simulation Predictive models Real-time systems Computational efficiency

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Portable Optical Two-way Time Transfer in Outdoor Atmospheric Link with CPLD-based Time Codec

Portable Optical Two-way Time Transfer in Outdoor Atmospheri...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Junwei Ren Bisong Pan Ze Li Ke Liu Jianye Zhao Dong Hou School of Automation Engineering University of Electronic Science and Technology of China Chengdu China College of Electronics Engineering and Computer Science Peking University Beijing China

We demonstrated a portable optical two-way time transfer scheme over a 120-m outdoor atmospheric link. The measured root-mean-square (RMS) fluctuation of the time deference between the two sites is about 81 ps within ... 详细信息

ISBN: (纸本)9781943580910

关键词： Fluctuations Atmospheric measurements Optical propagation Sea measurements Measurement by laser beam Optical variables measurement Optical fiber communication

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Direct measurement of the 19F(p,αγ)16O reaction in JUNA 16

Direct measurement of the 19F(p,αγ)16O reaction in JUNA

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16th Symposium on Nuclei in the Cosmos, NIC-XVI 2021

作者： Zhang, L.Y. Su, J. He, J.J. Wiescher, M. deBoer, R.J. Kahl, D. Chen, Y.J. Li, X.Y. Wang, J.G. Zhang, L. Cao, F.Q. Zhang, H. Zhang, Z.C. Jiao, T.Y. Sheng, Y.D. Wang, L.H. Song, L.Y. Jiang, X.Z. Li, Z.M. Li, E.T. Wang, S. Lian, G. Li, Z.H. Tang, X.D. Zhao, H.W. Sun, L.T. Wu, Q. Li, J.Q. Cui, B.Q. Chen, L.H. Ma, R.G. Guo, B. Xu, S.W. Li, J.Y. Qi, N.C. Sun, W.L. Guo, X.Y. Zhang, P. Chen, Y.H. Zhou, Y. Zhou, J.F. He, J.R. Shang, C.S. Li, M.C. Zhou, X.H. Zhang, Y.H. Zhang, F.S. Hu, Z.G. Xu, H.S. Cheng, J.P. Liu, W.P. Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and Technology Beijing Normal University Beijing100875 China The Joint Institute for Nuclear Astrophysics Department of Physics University of Notre Dame Notre DameIN46556 United States Bucharest-Magurele077125 Romania Institute of Modern Physics Chinese Academy of Sciences Lanzhou730000 China China Institute of Atomic Energy Beijing102413 China College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space Sciences Shandong University Weihai264209 China Yalong River Hydropower Development Company Chengdu610051 China Beijing Radiation Center Beijing100875 China

The 19F(p, αγ)16O reaction is of crucial importance for Galactic 19F abundances and CNO cycle loss in first generation Population III stars. Due to its extremely small cross sections, the 19F(p, αγ)16O reaction has not been measured in the low energy part of the Gamow window(70-200 keV). As a day-one campaign, the experiment was performed under the extremely low cosmic-ray-induced background environment of the China JinPing Underground Laboratory(CJPL), one of the deepest underground laboratories in the world. The γ-ray yields were measured over Ec.m.=72.4-344 keV, covering the full Gamow window for the first time. The direct experimental data will help people to expound the fluorine over-abundances, energy generation, as well as heavy-element nuclosynthesis scenario in asymptotic giant branch (AGB) stars, with the astrophysical model on the firm ground. © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://***/licenses/by/4.0/).

关键词： Cosmology

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In-situ TEM study of loop evolution in FeCrAl alloy under Fe⁺ irradiation: Effects of temperatures, dislocations and precipitates

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nuclear Analysis 2022年第1期1卷

作者： Pei, Kefei Ran, Guang Li, Yipeng Cao, Ziqi Cui, Dewang Zhang, Ruiqian Yang, Gang College of Energy Xiamen University Xiamen 361102 China Science and Technology on Reactor Fuel and Materials Laboratory Chengdu 610041 China Fujian Research Center for Nuclear Engineering Xiamen 361102 China Nuclear Power Institute of China Chengdu 610041 China

Fe13.5Cr4.7Al alloy was irradiated in-situ with 400 keV Fe+ in TEM at RT and 748 K. The evolution of dislocation loops under the influence of temperatures, irradiation dose, dislocation lines and precipitates were cha... 详细信息

Fe13.5Cr4.7Al alloy was irradiated in-situ with 400 keV Fe⁺ in TEM at RT and 748 K. The evolution of dislocation loops under the influence of temperatures, irradiation dose, dislocation lines and precipitates were characterized in detail. The loop rafting was found at RT irradiation for the first time and the growth direction of the rafted loops was along g = 110 direction. However, this phenomenon was not observed at 748 K and only the dislocation complex was appeared. The formation conditions of loop rafting were low temperature and a certain value of irradiation dose. The average size and number density of dislocation loops as a function of irradiation dose in the regions with dislocation lines, precipitates and no dislocation lines/precipitates were constructed and analyzed comparatively. At the same irradiation dose, sample irradiated at higher temperature has larger average loop size and lower loop number density. There was a complex interaction between dislocation line-loop at 748 K, but few interactions were observed at RT. At any irradiation dose, the loop number density in the region with dislocation lines was smaller than that in the region without dislocation lines, but the average loop size was slightly opposite. Moreover, the higher the irradiation temperature, the more obvious the effects of precipitates and dislocation lines on loop evolution were. Our current results provide a fundamental insight into how the dislocations, precipitates and dose affect loop evolution and characteristics in FeCrAl alloy at elevated temperatures. © 2022 The Authors

关键词： Dislocation loops FeCrAl alloy In-situ irradiation In-situ TEM

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Constraints on the Blazar-Boosted Dark Matter from the CDEX-10 Experiment

arXiv

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arXiv 2024年

作者： Xu, R. Yang, L.T. Yue, Q. Kang, K.J. Li, Y.J. An, H.P. Greeshma, C. Chang, J.P. Chen, Y.H. Cheng, J.P. Dai, W.H. Deng, Z. Fang, C.H. Geng, X.P. Gong, H. Guo, Q.J. Guo, T. Guo, X.Y. He, L. He, S.M. Hu, J.W. Huang, H.X. Huang, T.C. Jiang, L. Karmakar, S. Li, H.B. Li, H.Y. Li, J.M. Li, J. Li, Q.Y. Li, R.M.J. Li, X.Q. Li, Y.L. Liang, Y.F. Liao, B. Lin, F.K. Lin, S.T. Liu, J.X. Liu, S.K. Liu, Y.D. Liu, Y. Liu, Y.Y. Ma, H. Mao, Y.C. Nie, Q.Y. Ning, J.H. Pan, H. Qi, N.C. Ren, J. Ruan, X.C. Singh, M.K. Sun, T.X. Tang, C.J. Tian, Y. Wang, G.F. Wang, J.Z. Wang, L. Wang, Q. Wang, Y.F. Wang, Y.X. Wong, H.T. Wu, S.Y. Wu, Y.C. Xing, H.Y. Xu, Y. Xue, T. Yan, Y.L. Yi, N. Yu, C.X. Yu, H.J. Yue, J.F. Zeng, M. Zeng, Z. Zhang, B.T. Zhang, F.S. Zhang, L. Zhang, Z.H. Zhang, Z.Y. Zhao, J.Z. Zhao, K.K. Zhao, M.G. Zhou, J.F. Zhou, Z.Y. Zhu, J.J. Key Laboratory of Particle and Radiation Imaging Ministry of Education Department of Engineering Physics Tsinghua University Beijing100084 China Department of Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan NUCTECH Company Beijing100084 China YaLong River Hydropower Development Company Chengdu610051 China College of Nuclear Science and Technology Beijing Normal University Beijing100875 China College of Physics Sichuan University Chengdu610065 China School of Physics Peking University Beijing100871 China Department of Nuclear Physics China Institute of Atomic Energy Beijing102413 China Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai519082 China School of Physics Nankai University Tianjin300071 China Department of Physics Banaras Hindu University Varanasi221005 India Department of Physics Beijing Normal University Beijing100875 China

We report new constraints on light dark matter (DM) boosted by blazars using the 205.4 kg day data from the CDEX-10 experiment located at the China Jinping Underground Laboratory. Two representative blazars, TXS 0506+56 and BL Lacertae are studied. The results derived from TXS 0506+56 exclude DM-nucleon elastic scattering cross sections from 4.6×10−33 cm2 to 1×10−26 cm2 for DM masses between 10 keV and 1 GeV, and the results derived from BL Lacertae exclude DM-nucleon elastic scattering cross sections from 2.4 × 10−34 cm2 to 1 × 10−26 cm2 for the same range of DM masses. The constraints correspond to the best sensitivities among solid-state detector experiments in the sub-MeV mass range. Copyright © 2024, The Authors. All rights reserved.

关键词： Dark Matter

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Performance Calibration Study of the Payload Onboard the SVOM Satellite

Performance Calibration Study of the Payload Onboard the SVO...

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International Conference on Electronic Measurement and Instruments, ICEMI

作者： Tao Yu Siming Guo Jiang He Xing Wen Zheng Jiang Xiaoyu Qie Jinjie Wu The College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu China Division of Ionizing Radiation Metrology National Institute of Metrology (NIM) Beijing China Key Laboratory of Particle Astrophysics Institute of High Energy Physics Beijing China School of Science Hebei University of Science and Technology Shijiazhuang China

ISBN: (纸本)9781665444927

The ground-based calibration of the spectrometer onboard the astronomical satellite is extremely basic and important for the payload to complete the detection missions and achieve the scientific goals. With an excellent determination of the responsive relationship such as energy-channel relation, energy resolution, detection efficiency, and the non-uniformity of the detector, the observational data in orbit of the payload can be analyzed effectively and reasonably. The research has implemented the calibration campaign of a NaI(Tl) detector named GRD05, which is the main detector of the gamma-ray monitor (GRM) onboard the Space-based multiband astronomical Variable Objects Monitor(SVOM) satellite, utilizing a single-crystal monochromatic hard X-ray beam with the range of 15–40 keV. According to the data analysis results, the energy response and detection efficiency of the GRD05 are in good agreement with the expected output by Monte Carlo simulations.

关键词： Satellites Monte Carlo methods Instruments Energy resolution Linearity Detectors Orbits

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