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17th International Conference on Bio-Inspired Computing: Theories and Applications, BIC-TA 2022

作者： Huang, Yang Luo, Aimin Zhang, Mengmeng Bai, Liang Song, Yanjie Li, Jiting Science and Technology on Information Systems Engineering Laboratory College of Systems Engineering National University of Defense Technology Changsha China College of Systems Engineering National University of Defense Technology Changsha China Chinese Academy of Military Science Beijing China

ISBN: (纸本)9789819915484

The UAV mobile crowd sensing problem is a new research area due to the flexibility and low-cost advantage of UAVs. Current research rarely considers the task assignment and path planning problem simultaneously. In this paper, we describe the improved UAV mobile crowed sensing model that takes both the task assignment and path planning into consideration, meanwhile the model also considered the limit of UAV's power. In our paper, a task location distribution based genetic algorithm is proposed to solve the problem more efficiently. A series of instances involving different number of tasks and UAV bases is used in the paper. The results of the experiment indicate that our proposed method is efficient and can deal with large-scale problems. This research has resulted in a solution of the UAV mobile crowd sensing problem and can provide ideas to similar problems. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Genetic algorithms

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Research on task-focused massive multi-source heterogeneous information sharing & utilizing method 1

Research on task-focused massive multi-source heterogeneous ...

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1st IEEE International Conference on Computer Communication and the Internet, ICCCI 2016

作者： Wu, Shanshan Fan, Yang Science and Technology on Information Systems Engineering Laboratory Nanjing Research Institute of Electronics Engineering Nanjing China Department of Computer Science and Technology Nanjing University China

ISBN: (纸本)9781467385145

Nowadays the famous search engine companies are all providing the keyword web search capabilities. No one provides the high accurate & efficient user-requirements-oriented information Services. The task-focused massive multi-source heterogeneous information sharing & utilizing method and system is introduced in this paper. This paper presents the general metadata description model of heterogeneous information resource, the metadata extraction method of information resource, the service encapsulation method and registration publication mechanism of information resource, in order to standard the sharing process of large amounts of heterogeneous information resource. And then, the implement mechanism of information collection and index construction for huge amounts of information resource is given in the paper, by designing the optimized algorithm based on the map-reduce mechanism. Finally, the task-focused massive multi-source heterogeneous information precision searching mechanism is given in the paper in order to realize the information sharing and effective user of resources. © 2016 IEEE.

关键词： information services

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An Effective Differential Fault Analysis on the Serpent Cryptosystem in the Internet of Things

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China Communications 2014年第6期11卷 129-139页

作者： LI Wei TAO Zhi GU Dawu SUN Li QU Bo LIU Zhiqiang LIU Ya School of Computer Science and Technology Donghua University Department of Computer Science and Engineering Shanghai Jiao Tong University State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Shanghai Key Laboratory of Integrate Administration Technologies for Information Security Network Architectures and Services Delft University of Technology Mekelweg 4 2628 CD Delft The Netherlands ESAT/COSIC and IBBT Katholieke Universiteit Leuven Department of Computer Science and Engineering University of Shanghai for Science and Technology

Due to the strong attacking ability, fast speed, simple implementation and other characteristics, differential fault analysis has become an important method to evaluate the security of cryptosystem in the Internet of Things. As one of the AES finalists, the Serpent is a 128-bit Substitution-Permutation Network(SPN) cryptosystem. It has 32 rounds with the variable key length between 0 and 256 bits, which is flexible to provide security in the Internet of Things. On the basis of the byte-oriented model and the differential analysis, we propose an effective differential fault attack on the Serpent cryptosystem. Mathematical analysis and simulating experiment show that the attack could recover its secret key by introducing 48 faulty ciphertexts. The result in this study describes that the Serpent is vulnerable to differential fault analysis in detail. It will be beneficial to the analysis of the same type of other iterated cryptosystems.

关键词： internet of things cryptanalysis differential fault analysis serpent.

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Adsorption behaviors of gas molecules on the surface of ZnO nanocrystals under UV irradiation

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science China(Technological sciences) 2019年第12期62卷 2226-2235页

作者： ZHANG QiuPing XIE GuangZhong DU HongFei YANG Jing SU YuanJie TAI HuiLing XU Ming ZHAO Kang State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of China(UESTC)Chengdu 610054China Key Laboratory of Information Materials of Sichuan Province School of Elctrical and Information EngineeringSouuhwest University for NationalitiesChengdu 610041China

A UV-activated room temperature chemiresistive gas sensor based on ZnO nanocrystals film was fabricated. Its gas sensing properties under various conditions were also investigated in detail. The results shed new insight into the adsorption behaviors of gas molecules on the surface of ZnO nanocrystals under UV irradiation. The chemisorbed oxygen species(O^-2(ads)(hv)) induced by UV light govern the adsorption and desorption ways of other gas molecules on the surface of ZnO nanocrystals, which is dependent on the electron affinity of gas molecules. Gas molecules with higher electron affinity than oxygen molecules can be adsorbed on the surface by the competitive adsorption way, extracting electrons from the surface. Gas molecules with lower electron affinity than oxygen molecules are attracted by the adsorbed O^-2(ads)(hv)layer, releasing electrons to the surface. These processes can influence the gas sensing properties of the sensor. Our findings will pave the way for the fundamental understanding and design of UV-activated gas sensor in the future.

关键词： adsorption behaviors electron affinity UV-activated gas sensor ZnO nanocrystals

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Exploring Students Engagement Towards the Learning Management System (LMS) Using Learning Analytics

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Computer systems science & engineering 2021年第4期37卷 73-87页

作者： Shahrul Nizam Ismail Suraya Hamid Muneer Ahmad A.Alaboudi Nz Jhanjhi Department of Information Systems Faculty of Computer Science&Information TechnologyUniversity MalayaKuala Lumpur50603Malaysia Department of Information systems College of Computer and Information SciencesShaqra UniversitySaudi Arabia School of Computer Science and Engineering SCETaylor’s UniversitySubang Jaya47500Malaysia

Learning analytics is a rapidly evolving research discipline that uses theinsights generated from data analysis to support learners as well as optimize boththe learning process and environment. This paper studied students’ engagementlevel of the Learning Management System (LMS) via a learning analytics tool,student’s approach in managing their studies and possible learning analytic methods to analyze student data. Moreover, extensive systematic literature review(SLR) was employed for the selection, sorting and exclusion of articles fromdiverse renowned sources. The findings show that most of the engagement inLMS are driven by educators. Additionally, we have discussed the factors inLMS, causes of low engagement and ways of increasing engagement factorsvia the Learning Analytics approach. Nevertheless, apart from recognizing theLearning Analytics approach as being a successful method and technique for analyzing the LMS data, this research further highlighted the possibility of mergingthe learning analytics technique with the LMS engagement in every institution asbeing a direction for future research.

关键词： Learning analytics student engagement learning management system systematic literature review

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Adjoint-Based Marker-In-Cell Data Assimilation for Constraining Thermal and Flow Processes From Lagrangian Particle Records

Journal of Geophysical Research: Machine Learning and Comput...

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Journal of Geophysical Research: Machine Learning and Computation 2025年第2期2卷

作者： Atsushi Nakao Tatsu Kuwatani Shin-ichi Ito Hiromichi Nagao Graduate School of Engineering Science Akita University Akita Japan Research Institute for Marine Geodynamics Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Yokosuka Japan Institute of Systems and Information Engineering University of Tsukuba Tsukuba Japan Earthquake Research Institute The University of Tokyo Tokyo Japan Graduate School of Information Science and Technology The University of Tokyo Tokyo Japan

Geophysical problems often involve Lagrangian particles that follow surrounding flows and record information about the system, such as the pressure and temperature path recorded in metamorphic rocks. These Lagrangian particles can be useful for constraining unknown parameters, such as their sources and the thermal and flow processes of the surrounding fluid. To use information about Lagrangian particles to constrain unknown parameters about the surrounding fluid in an inverse manner, we have developed a 4D-Var (four-dimensional variational) data assimilation for thermal convection in a particle-grid coupled system. Here we consider particles advected in a thermally convecting, highly viscous fluid that mimics geochemical tracers in the Earth's mantle, and estimate time series of thermal and velocity fields only from the particle records, focusing on their high traceability in the laminar flow. We present preliminary 4D-Var results using a sufficient amount of synthetic particle position and velocity data. The 4D-Var run achieves a 60-Myr time reversal of thermal convection at a horizontal wavelength of 6,000 km, without using any temperature data. For complex convection patterns, the cost function tends not to decrease well, likely indicating that the method is successful when the time reversal is much smaller than the mixing time scale, over which information about the initial particle arrangement is lost. Our framework has the potential to constrain thermal, flow, and mixing processes not only in the Earth's mantle but also in any other laminar flow containing Lagrangian particles that record useful information. We have developed a new inversion scheme for a grid-particle system for retrospective estimation of thermal and flow processes The method has successfully reconstructed thermal convection from synthetic particle positions and velocities without using temperature data Our method highlights the advantages of particle traceability in laminar flow in the conte

关键词： inverse problem fluid mechanics thermal convection data assimilation tracer particle numerical simulation

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Efficient power-consumption-based load-sharing topology control protocol for harsh environments in wireless sensor networks

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IET Communications 2009年第5期3卷 859-870页

作者： Huang, C.-M. Ku, H.-H. Kung, H.-Y. Department of Computer Science and Information Engineering National Cheng Kung University Tainan Taiwan Department of Management Information Systems National Pingtung University of Science and Technology Pingtung Taiwan

Energy conservation and network performance are critical issues in wireless sensor networks. The authors present a novel efficient communication topology control protocol, called quorum-based load-sharing control protocol (QLSCP). QLSCP is a quorum-based communication protocol, which chooses appropriate communication nodes, adjusts the service loads of critical nodes and performs adaptive sleep management. QLSCP is suitable for harsh environments without a central control server calculating the locations of sensors, using the factor of the remaining power to build the system topology. The proposed protocol divides the topology operation into topology formation, adjustment and execution phases. The topology formation phase builds the backbone of an enhanced tree. In the topology adjustment phase, the enhanced tree is adjusted by an optimal balance of critical nodes in the backbone. In the topology execution phase, the efficient surplus-energy consuming (ESC) mechanism is proposed to efficiently exhaust the energy of each node. The ESC mechanism is designed to efficiently exhaust the latest remaining electronic power of sensor nodes. Simulation results of QLSCP demonstrate that it efficiently achieves to prolong system lifetime in harsh environments. © 2009 The Institution of engineering and technology.

关键词： Topology

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Fine-grained permutation entropy as a measure of natural complexity for time series

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Chinese Physics B 2009年第7期18卷 2690-2695页

作者：刘小峰王越 The Key Laboratory of Robot and Intelligent Technology of Shandong Province and College of Information and Electrical EngineeringShandong University of Science and Technology Institute of Artificial Intelligence and Robot Xi'an Jiaotong University

In a recent paper [2002 Phys. Rev. Lett. 88 174102], Bandt and Pompe propose permutation entropy （PE） as a natural complexity measure for arbitrary time series which may be stationary or nonstationary,deterministic or *** method is based on a comparison of neighbouring *** paper further develops PE,and proposes the concept of fine-grained PE （FGPE） defined by the order pattern and magnitude of the difference between neighbouring values. This measure excludes the case where vectors with a distinct appearance are mistakenly mapped onto the same permutation type,and consequently FGPE becomes more sensitive to the dynamical change of time series than does PE,according to our simulation and experimental results.

关键词： complexity entropy dynamical change fine-grained symbolization

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Van der Waals epitaxial growth of single-crystal molecular film

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National science Review 2024年第11期11卷 194-202页

作者： Lixin Liu Penglai Gong Kailang Liu Bingrong Huang Zhihao Zhang Yingshuang Fu Yu Wu Yinghe Zhao Meihui Wang Yongshan Xu Huiqiao Li Tianyou Zhai State Key Laboratory of Materials Processing and Die &Mould Technology School of Materials Science and EngineeringHuazhong University of Science and Technology Key Laboratory of Optic-Electronic Information and Materials of Hebei Province College of Physics Science and Technology Hebei University Wuhan National High Magnetic Field Center School of Physics Huazhong University of Science and Technology

Epitaxy is the cornerstone of semiconductor technology, enabling the fabrication of single-crystal *** advancements in van der Waals（vd W） epitaxy have opened new avenues for producing wafer-scale single-crystal 2D atomic crystals. However, when it comes to molecular crystals, the overall weak vd W force means that it is a significant challenge for small molecules to form a well-ordered structure during *** we demonstrate that the vd W epitaxy of Sb2O3molecular crystal, where the whole growth process is governed by vd W interactions, can be precisely controlled. The nucleation is deterministically modulated by epilayer–substrate interactions and unidirectional nuclei are realized through designing the lattice and symmetry matching between epilayer and substrate. Moreover, the growth and coalescence of nuclei as well as the layer-by-layer growth mode are kinetically realized via tackling the Schwoebel-Ehrlich barrier. Such precise control of vd W epitaxy enables the growth of single-crystal Sb2O3molecular film with desirable thickness. Using the ultrathin highly oriented Sb2O3film as a gate dielectric, we fabricated MoS2-based field-effect transistors that exhibit superior device performance. The results substantiate the viability of precisely managing molecule alignment in vd W epitaxy, paving the way for large-scale synthesis of single-crystal 2D molecular crystals.

关键词： van der Waals epitaxy inorganic molecular crystal layer-by-layer growth single-crystal film dielectric

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ON A RELATION BETWEEN MAXIMUM-LIKELIHOOD CLASSIFICATION AND MINIMUM RELATIVE-ENTROPY CLASSIFICATION

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IEEE TRANSACTIONS ON information THEORY 1984年第6期30卷 851-854页

作者： SHORE, JE Computer Science and Systems Branch Information Technology Division Research Laboratory Washington D.C. DC USA

Maximum likelihood (ML) and minimum relative-entropy (MRE) (minimum cross-entropy) classification of samples from an unknown probability density when the hypotheses comprise an exponential family are considered. It is shown that ML and MRE lead to the same classification nde, and the result is illustrated in terms of a method for estimating covariance matrices recently developed by Burg, Luenberger, and Wenger, MRE classification applies to the general case in which it cannot be assumed that the samples were generated by one of the hypothesis densities. The common use of ML in this case is technically incorrect, but the equivalence of MRE and ML provides a theoretical justification.

关键词： information THEORY

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