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2023 International Conference on Information Network and computer Communications, INCC 2023

作者： Kankia, Yasir Bashir Che, Xianhui Ip, Barry Ji, Wei University of Hertfordshire School of Physics Engineering and Comouter Science Hatfield United Kingdom Queen Mary University of London School of Electronic Engineering and Computer Science London United Kingdom

ISBN: (纸本)9798350336139

As traditional information technology systems become more costlier and complex to maintain, they are also no longer able to meet current educational requirements, notwithstanding issues with the lack of scalability and flexibility. Many of these issues can be addressed by the concept of Student-Informed Technology and a newly-proposed comprehensive technology readiness adoption (CTRAM) model. The five central components of CTRAM were assessed at six different universities in Nigeria which comprises of three public/Government-funded universities and three private-owned universities. The result of the study confirmed that subjective norms of students evidence a statistically significant relationship with student perceptions of cloud technology adoption in higher educational institutions in the country. All five CTRAM components: perceived innovation, perceived usefulness, perceived easiness, attitude toward technology and perceived reliability are statistically significant as a technological factor in determining students' perception of cloud technology adoption. Results from multiple regression also clearly indicate the potential joint effect among all five factors. These findings support the existing body of knowledge regarding technological adoption in the educational sector, especially in developing countries towards their future investment and improvement. © 2023 IEEE.

关键词： Students

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Multiphoton Resonance Meets Tunneling Ionization: High-Efficient Photoexcitation in Strong-Field-Dressed Ions

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Physical Review Letters 2024年第11期133卷 113201页

作者： Yewei Chen Hongbin Lei Quanjun Wang Hongqiang Xie He Zhang Xu Lu Ning Zhang Shunlin Huang Yuzhu Wu Jianpeng Liu Qian Zhang Yi Liu Zengxiu Zhao Jing Zhao Jinping Yao State Key Laboratory of High Field Laser Physics School of Optical-Electrical and Computer Engineering Department of Physics School of Science Center of Materials Science and Optoelectronics Engineering School of Microelectronics

Tunneling ionization, a fascinating quantum phenomenon, has played the key role in the development of attosecond physics. Upon absorption of a few tens of photons, tunneling ionization creates ions in different excited states and even enables the formation of population inversion between ionic states. However, the underlying physics is still being debated. Here, we demonstrate a significant enhancement in the efficiency of multiphoton excitation when ionization of neutral molecules and resonant excitation of ions coexist in strong laser fields. It facilitates the dramatic increase in population inversion and lasing radiation in N2+ around 1000 nm pump wavelength. Utilizing the ionization-coupling theory, we discover that the synergistic interplay between tunneling ionization and multiphoton excitation enables the ionic coherence to be maximized by phase locking of the periodically created ionic dipoles and consistently maintain an optimal phase for the follow-up photoexcitation. This Letter provides new insights into the photoexcitation mechanism of ions in strong laser fields and opens up a route for optimizing ionic lasing radiations.

关键词： Multiphoton or tunneling ionization & excitation Optical transient phenomena Stark effect Ultrafast phenomena

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A High-Precision Generality Method for Chinese Nested Named Entity Recognition 18th

A High-Precision Generality Method for Chinese Nested Named...

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18th International Conference on Wireless Artificial Intelligent Computing Systems and Applications, WASA 2024

作者： Ji, Xiayan Chen, Lina Gao, Hong Shen, Fangyao Guo, Hongjie College of Physics and Electronic Information Engineering Zhejiang Normal University Jinhua China School of Computer Science and Technology Zhejiang Normal University Jinhua China

ISBN: (纸本)9783031714696

Chinese Named Entity Recognition (CNNER) faces numerous challenges, including the diversity of the Chinese language, the complex representation of mixed Chinese and English characters and symbols in texts, the complexity of the Chinese language itself with long sentences containing multiple entities, and the uneven distribution of named entity classes in actual Chinese scenarios. To address these challenges, we propose a method called CPMFA (Character Pair-based method with Multi-feature representation and Attention mechanism). The CPMFA method predicts predetermined relations between character pairs, facilitating the identification of nested named entities based on these relations. Firstly, the method leverages the pre-trained language model LERT (Linguistically-motivated Bidirectional Encoder Representation from Transformer) and BiLSTM (Bidirectional Long Short-Term Memory) to generate comprehensive and accurate character embeddings. Secondly, it incorporates multi-feature representation to capture complex semantic information and introduces the Pyramid Squeeze Attention (PSA) module to emphasize key features. Finally, the PolyLoss function is integrated into the model training process to tackle the challenge of an imbalanced distribution of entity classes. We employed the DiaKG, Yidu-S4K and Weibo datasets to validate and evaluate the efficacy and adaptability of our method. The F1 obtained by the CPMFA on these three datasets is 83.79%, 72.03%, and 70.39%, in that order. The experimental results illustrate the outstanding performance of the proposed CPMFA method in both general knowledge and Chinese medical domains. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Semantics

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TRUE: A Correlation Analysis Approach for Conducting Optimal Routing Metrics in VANETs

IEEE Networking Letters

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IEEE Networking Letters 2023年第1期5卷 55-58页

作者： Bi, Zhenguo Meng, Guiying Hawbani, Ammar Goudos, Sotirios K. Wan, Shaohua Zhao, Liang Shenyang Aerospace University School of Computer Science Shenyang110136 China University of Electronic Science and Technology of China School of Computer Science and Engineering Chengdu611731 China University of Science and Technology of China School of Computer Science and Technology Hefei360022 China Aristotle University of Thessaloniki ELEDIA@AUTH Department of Physics Thessaloniki54124 Greece Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen518110 China

In vehicular networks, especially in urban scenarios, road topology-based routing shows great advantages in dealing with the problems of broken links and long delays originating from sparse connections and signal attenuation. However, how road status affect data transmission performance on various routing metrics is still an intricate and vague problem. Concerned with this problem, we propose a correlation analysis approach between road network features and routing metrics (TRUE) to assist in the construction of optimal routing metrics in road-based hierarchical inter-vehicle routing. Simulation results show that TRUE has a strong ability to optimize intermediate road selection. © 2019 IEEE.

关键词： Vehicle routing

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Geometric discord of tripartite quantum systems

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Chinese physics B 2023年第11期32卷 184-190页

作者：熊春河齐文韬缪茂可吴明晖 Interdisciplinary Center for Quantum Information School of PhysicsZhejiang UniversityHangzhou 310027China School of Computer and Computing Science Hangzhou City UniversityHangzhou 310015China School of Mathematical Sciences Zhejiang UniversityHangzhou 310027China School of information and electrical engineering Hangzhou City UniversityHangzhou 310015China

We study the quantification of geometric discord for tripartite quantum ***,we obtain the analytic formula of geometric discord for tripartite pure *** is already known that the geometric discord of pure states reduces to the geometric entanglement in bipartite systems,the results presented here show that this property is no longer true in tripartite ***,we provide an operational meaning for tripartite geometric discord by linking it to quantum state discrimination,that is,we prove that the geometric discord of tripartite states is equal to the minimum error probability to discriminate a set of quantum states with von Neumann ***,we calculate the geometric discord of three-qubit Bell diagonal states and then investigate the dynamic behavior of tripartite geometric discord under local *** is interesting that the frozen phenomenon exists for geometric discord in this scenario.

关键词： geometric discord tripartite quantum systems quantum state discriminations frozen discord

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Single-shot phase retrieval for randomly fluctuated and obstructed vortex beams

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science China(physics,Mechanics & Astronomy) 2024年第4期67卷 72-80页

作者： Hao Zhang Jun’an Zhu Xingyuan Lu Zhiquan Hu Jianbo Gao Kun Liu Qiwen Zhan Yangjian Cai Chengliang Zhao School of Physical Science and Technology Soochow UniversitySuzhou 215006China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Shandong Provincial Engineering and Technical Center of Light Manipulations Shandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250358China Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University East China Normal UniversityShanghai 200241China

Vortex beams with orbital angular momentum play a crucial role in increasing the information capacity in optical *** magnitude of orbital angular momentum determines the ability of information *** practice,a vortex beam can encounter random objects or turbulence during free-space propagation,resulting in information ***,accurately measuring the orbital angular momentum of a randomly fluctuated and obstructed vortex beam is a considerable ***,we propose a single-shot method for the phase retrieval of a randomly fluctuated and obstructed vortex beam by combining the phase-shift theorem and self-reference *** results reveal that the sign and magnitude of the initial orbital angular momentum can be simultaneously determined based on their quantitative relation with the number of coherence singularities on the observation plane,thus addressing the effects of random occlusion and atmospheric *** proposed method considerably improved the accurate decoding of orbital angular momentum information in nonideal freespace optical communications.

关键词： optical vortex phase retrieve orbital angular momentum measurement antiturbulence antidisturbance

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ETDA a tool for the development of e-Tongues

ETDA a tool for the development of e-Tongues

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2023 International Young Engineers Forum in Electrical and computer engineering, YEF-ECE 2023

作者： Reis, Tiago Fino, M. Helena Raposo, Maria Nova School of Science and Technology Department of Electrotechnical and Computer Engineering Caparica Portugal Department of Physics Caparica Portugal

ISBN: (纸本)9798350300420

This paper presents the Electronic Tongues Data Analytics (ETDA) tool for automatically extracting the relevant features from data obtained from an electronic tongue (e-Tongue) system based on impedance spectroscopy measurements. The tool was implemented in Python and was created to assist with the development of e-Tongues. This tool helps to quickly visualize the data from the experiments and can automatically create and calibrate the Principal Components Analysis (PCA) to fit the concentrations of a determined molecule present in the complex media. © 2023 IEEE.

关键词： Principal component analysis

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An electron-transfer-tuning strategy at the graphene/metal interface for improving acidic water electrolysis in proton exchange membrane electrolyzers

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Journal of Energy Chemistry 2025年第4期103卷 344-352页

作者： Yue Xu Shuaidong Li Yingjian He Fumiya Shiokawa Samuel Jeong Aimi Asilah Haji Tajuddin Zeyu Xi Yoshikazu Ito Jingzi Zhang Zeyun Cai Xi Lin Kailong Hu School of Materials Science and Engineering and Institute of Materials Genome&Big DataHarbin Institute of TechnologyShenzhen 518055GuangdongChina Institute of Special Environments Physical Sciences Harbin Institute of TechnologyShenzhen 518055GuangdongChina School of Computer Science and Technology Harbin Institute of TechnologyShenzhen 518055GuangdongChina Institute of Applied Physics Graduate School of Pure and Applied SciencesUniversity of TsukubaTsukuba 305-8573Japan

Graphene encapsulation has been shown to be an effective technique for improving the corrosion resistance of non-noble metal catalysts for the acidic water *** key challenge lies in enhancing the electrocatalytic activity of graphene-encapsulated metals while maintaining their durability in acidic ***,an electron-transfer-tuning strategy is investigated at the graphene/NiMo interface,aiming to improve the hydrogen evolution reaction(HER)performance of graphene-encapsulated NiMo *** doping of Ti,a low electronegativity element,into NiMo substrate was confirmed to increase electron transfer from the metal core toward the *** electron-rich state on graphene facilitates the adsorption of positively charged protons on graphene,thereby enabling a Pt/C-comparable performance in 0.5 M H_(2)SO_(4),with only a 3.8%degradation in performance over a 120-h continuous *** proton exchange membrane(PEM)water electrolyzer assembled by the N-doped grapheneencapsulated Ti-doped NiMo exhibits a smaller cell voltage to achieve a current density of 2.0 A cm^(-2),in comparison to the Pt/C based *** study proposes a novel electron-transfer-tuning strategy to improve the HER activity of graphene-encapsulated non-noble metal catalysts without sacrificing durability in acidic electrolytes.

关键词： Hydrogen evolution Acidic media Graphene encapsulation Interface Proton exchange membrane

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Numerical study on matching conditions of Langmuir parametric instability and the formation of Langmuir turbulence in ionospheric heating

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Earth and Planetary physics 2022年第5期6卷 474-486页

作者： MoRan Liu Chen Zhou Ting Feng Xiang Wang ZhengYu Zhao Department of Space Physics School of Electronic InformationWuhan UniversityWuhan 430072China School of Computer Science and Information Engineering Hubei UniversityWuhan 430011China

Parametric decay instability(PDI)is an important process in ionospheric *** paper focuses on the frequency and wavevector matching condition in the initial PDI process,the subsequent cascade stage,and the generation of strong Langmuir turbulence.A more general numerical model is established based on Maxwell equations and plasma dynamic equations by coupling highfrequency electromagnetic waves to low-frequency waves via ponderomotive *** primary PDI,cascade process,and strong Langmuir turbulence are excited in the *** matching condition in the initial PDI stage and cascade process is *** result indicates that the cascade ion acoustic wave may induce or accelerate the formation of cavitons and lead to the wavenumber spectrum being more enhanced at 2k_(L)(where k_(L) is the primary Langmuir wavenumber).The wavenumber spectra develop from discrete to continuous spectra,which is attributed to the caviton collapse and strong Langmuir turbulence.

关键词： ionospheric electromagnetic propagation parametric decay instability cascade Langmuir turbulence

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Design, Fabrication, and Characterization of a Broadband Metamaterial Absorber for Ku-band Applications

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Journal of Electronic Materials 2025年 1-15页

作者： Hussain, Altaf Dong, Jian Abdulkarim, Yadgar I. Karim, Ayoub Sabir Shi, Ronghua School of Computer Science and Engineering Central South University Changsha410083 China School of Electronic Information Central South University Changsha410083 China Physics Department College Science Charmo University Sulaimania Kurdistan Region Chamchamal46023 Iraq Department of Physics College of Education Salahaddin University-Erbil Kurdistan Region Erbil44002 Iraq

Nowadays, radar and satellite communication are crucial technologies that utilize electromagnetic waves and are essential for numerous applications. In this work, we numerically designed a novel metamaterial broadband absorber operating in the frequency range of 10–18 GHz, achieving over 90% absorptivity across a broad bandwidth from 12.55 GHz to 15.11 GHz. computer Simulation Technology (CST) was employed to simulate and investigate the proposed design. We conducted parametric studies, analyzed the waveguide port on different axes, and provided a step-by-step design layout of the proposed metamaterial unit cell, along with field distributions. To validate the simulation results, we successfully fabricated and tested the metamaterial absorber. The experimental results demonstrate an absorption rate exceeding 90% from 12.52 GHz to 14.31 GHz, aligning well with the numerical simulations. The proposed design was also utilized for the detection of cervical cancer, exhibiting sensitivity of approximately 3.16 GHz/RIU. The novelties of this study include its simple design, ease of fabrication, low cost, compact size, and broadband performance. Furthermore, the proposed design holds significant promise for real-world applications due to its reconfigurability. Our innovative metamaterial absorber has potential applications in television broadcasting, detection systems, and biomedical sensing. © The Minerals, Metals & Materials Society 2025.

关键词： Metamaterials

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