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25th International Arab Conference on Information technology, ACIT 2024

作者： Gao, Shaohuo He, Juanjuan Liao, Yi Liu, Hongwei Wuhan University of Science and Technology School of Computer Science and Technology Wuhan China

ISBN: (纸本)9798331540012

In this paper, a new framework based on memory differential cooperation mechanism is proposed. It effectively combines the memory mechanism, differential evolution algorithm and cooperation mechanism, and makes improvements according to the characteristics of MOEA/D to promote MOEA/D make full use of the historical evolution direction and PS distribution. Firstly, this paper designs a memory mechanism method to record the past historical information effectively, and selects the excellent individuals in the historical information as the guide group. Secondly, the differential cooperation mechanism will guide the population to decompose each subpopulation, and use the differential algorithm to iteratively optimize the subpopulation to search the Pareto set suitable for the current environment. Thirdly, through the idea of cooperation algorithm, the excellent individuals of each subpopulation are further shared to replace the individuals of this population, which further improves the convergence and diversity of the algorithm. Finally, extensive testing is conducted on FDA, dMOP, and F test suites. Experimental results show that exceeds the performance of some state-of-the-art algorithms. © 2024 IEEE.

关键词： Optimization algorithms

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Using Graph Isomorphism Network to Solve Graph Coloring Problem 4

Using Graph Isomorphism Network to Solve Graph Coloring Prob...

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4th International Conference on Consumer Electronics and computer Engineering, ICCECE 2024

作者： Zhang, Yicheng Zhang, Kai Wu, Ni School of Computer Science and Technology Wuhan University of Science and Technology Wuhan China

ISBN: (纸本)9798350384062

The graph coloring problem is a classical NP-hard combinatorial optimization problem, which aims to assign distinct colors to connected nodes as much as possible. Currently, graph neural networks are being applied to combinatorial optimization problems but have not yielded satisfactory experimental results. This paper discusses the advantages and challenges of different types of graph neural networks in solving the graph coloring problem. It is deduced that graph isomorphism networks possess stronger coloring abilities than other types of graph neural networks in theory, leading to a graph isomorphism network model based on physical-inspired framework and tabu search algorithm to solve the graph coloring problem. The theoretical findings have been empirically validated, demonstrating that the proposed model performs comparably or superiorly to existing solvers in terms of both quality and running time. © 2024 IEEE.

关键词： Tabu search

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Optical transparent metamaterial structure for microwave-infrared-compatible camouflage based on indium tin oxide

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science China(Technological sciences) 2023年第10期66卷 2850-2861页

作者： LUO Hui XIONG Yao CHENG YongZhi CHEN Fu LI XiangCheng School of Information Science and Engineering Wuhan University of Science and TechnologyWuhan 430081China State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081China

A visible transparent metamaterial absorber was designed and fabricated with ultrabroadband microwave absorption and low infrared emissivity to meet the increasing demand for multispectral compatible camouflage. The absorber was fabricated with a low-infrared emissive layer at the top, a microwave-absorbing layer in the middle, and a reflective layer at the bottom, which were separated by polymethyl methacrylate plates. The absorber showed an average visible transmittance of 55%, infrared emissivity of ~0.37, and effective microwave absorption bandwidth of 32.1 GHz with a total thickness of 3.0 mm. Furthermore,microwave absorption exhibited wide-angle stability and polarization insensitivity characteristics. The mechanism of microwave attenuation was further explored through effective electromagnetic parameters as well as surface current, electric field, magnetic field, and energy loss density distributions. The experimental results were consistent with those of the simulations and calculations, indicating the potential of the designed metamaterial absorber for future applications in multispectral compatible camouflage.

关键词： optical transparent microwave absorption metamaterial low infrared emissivity indium tin oxide

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Towards Effective Author Name Disambiguation by Hybrid Attention

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Journal of computer science & technology 2024年第4期39卷 929-950页

作者： Qian Zhou Wei Chen Peng-Peng Zhao An Liu Jia-Jie Xu Jian-Feng Qu Lei Zhao School of Computer Science and Technology Soochow UniversitySuzhou 215006China

Author name disambiguation(AND)is a central task in academic search,which has received more attention recently accompanied by the increase of authors and academic *** tackle the AND problem,existing studies have proposed various approaches based on different types of information,such as raw document features(e.g.,co-authors,titles,and keywords),the fusion feature(e.g.,a hybrid publication embedding based on multiple raw document features),the local structural information(e.g.,a publication's neighborhood information on a graph),and the global structural information(e.g.,interactive information between a node and others on a graph).However,there has been no work taking all the above-mentioned information into account and taking full advantage of the contributions of each raw document feature for the AND problem so *** fill the gap,we propose a novel framework named EAND(Towards Effective Author Name Disambiguation by Hybrid Attention).Specifically,we design a novel feature extraction model,which consists of three hybrid attention mechanism layers,to extract key information from the global structural information and the local structural information that are generated from six similarity graphs constructed based on different similarity coefficients,raw document features,and the fusion *** hybrid attention mechanism layer contains three key modules:a local structural perception,a global structural perception,and a feature ***,the mean absolute error function in the joint loss function is used to introduce the structural information loss of the vector *** results on two real-world datasets demonstrate that EAND achieves superior performance,outperforming state-of-the-art methods by at least+2.74%in terms of the micro-F1 score and+3.31%in terms of the macro-F1 score.

关键词： author name disambiguation multiple-feature information hybrid attention pruning strategy structural information loss of vector space

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Correction of thermal airflow distortion in warpage measurements of microelectronic packaging structures via deep learning-based digital image correlation

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Microsystems & Nanoengineering 2024年第4期10卷 403-414页

作者： Yuhan Gao Yuxin Chen Ziniu Yu Chuanguo Xiong Xin Lei Weishan Lv Sheng Liu Fulong Zhu Institute of Microsystems School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China

The projected speckle-based three-dimensional digital image correlation method(3D-DIC)is being increasingly used in the reliability measurement of microelectronic packaging structures because of its noninvasive nature,high precision,and low ***,during the measurement of the thermal reliability of packaging structures,the thermal airflow generated by heating introduces distortions in the images captured by the DIC measurement system,impacting the accuracy and reliability of noncontact *** address this challenge,a thermal airflow distortion correction model based on the transformer attention mechanism is proposed specifically for the measurement of thermal warpage in microelectronic packaging *** model avoids the oversmoothing issue associated with convolutional neural networks and the lack of physical constraints in generative adversarial networks,ensuring the precision of grayscale gradient changes in speckle patterns and minimizing adverse effects on DIC calculation *** inputting the distorted images captured by the DIC measurement system into the network,corrected images are obtained for 3D-DIC calculations,thus allowing the thermal warpage measurement results of the sample to be *** experiments measuring topography with customized step block specimens,the effectiveness of the proposed method in improving warpage measurement accuracy is confirmed;this is particularly true when captured images are affected by thermal airflow at 140°C and 160°C,temperatures commonly encountered in thermal reliability testing of packaging *** method successfully reduces the standard deviation from 9.829 to 5.943μm and from 12.318 to 6.418μm,*** results demonstrate the substantial practical value of this method for measuring thermal warpage in microelectronic packaging structures.

关键词： thermal distortion image

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High-performance thermal interface materials enabled by vertical alignment of lightweight and soft graphene foams

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Nano Research 2024年第11期17卷 9293-9299页

作者： Huaqiang Fu Renqiang Fang Chao Tian Wei Qian Shiya Cao Ziran Zhang Xiaoxi Xu Chuang Yao Zhe Wang Daping He School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Hubei Engineering Research Center of RF-Microwave Technology and Application School of Science Wuhan University of Technology Wuhan 430070 China School of Materials and Microelectronics Wuhan University of Technology Wuhan 430070 China Shanghai Institute of Satellite Engineering Shanghai 201109 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

High-performance thermal interface materials (TIMs) are highly sought after for modern electronics. Two-dimensional (2D) materials as vertical aligned fillers can optimize the out-plane thermal conductivity (k ⊥), but their excessively high content or intrinsic rigidness deteriorate TIMs softness, leading to worsening for thermal contact resistance (R contact). In this study, 2D graphene materials are fabricated into lightweight and soft graphene foams (GFs) with high-orientation, acting as vertical filler frameworks to optimize the k ⊥ and R contact for vertical GF (VGF) TIMs. The VGF-TIM has a high k ⊥ of 47.9 W·m^(−1)·K^(−1) at a low graphene content of 15.5 wt.%. Due to the softness and low filler contents of GFs, the VGF-TIM exhibits a low compressive module (4.2 MPa), demonstrating excellent compressibility. The resulting TIM exhibit a low contact resistance of 24.4 K·mm2·W^(−1), demonstrating 185.1% higher cooling efficiency in practical heat dissipating scenario compared to commercial advanced TIMs. This work provides guidelines for the design of advanced TIMs and their applications in thermal management.

关键词： graphene foam thermal resistance thermal conductivity thermal interface materials

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Evaluation mechanism of sustainable development level for the cities in the Yangtze River Economic Belt under the dual-carbon policy

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Environmental science and Pollution Research 2024年第24期31卷 35115-35132页

作者： Sun, Mingyue Rao, Congjun Zhang, Xinyu Wei, Enli School of Science Wuhan University of Technology Wuhan430070 China School of Economics Wuhan University of Technology Wuhan430070 China

Low carbon sustainable development (LCSD) has become an inevitable choice, for which China has put forward a "dual-carbon" policy. The purpose of this study is to capture the interaction between the environment and the economy in the context of this goal, thus evaluating LCSD level from a systematic perspective. This paper proposes a super slack based measurement (SBM) model with a non-equal weight structure to assess the LCSD level. Firstly, a maximum influence minimum redundancy (MIMR) index selection algorithm is designed to establish input and output index systems, which avoids redundancy indexes. Secondly, the objective function of the original super SBM employs an equal weight structure, which leads results inadequately reflect the research preferences. Therefore, the weights of indexes are introduced to form an improved super SBM. Finally, 40 cities along the Yangtze River Economic Belt (YREB) are selected for empirical analysis. Results show that (1) the LCSD level of YRBE decreases from downstream to upstream to midstream;(2) Jiangsu, Zhejiang, and Sichuan provinces have higher LCSD levels, while Hunan and Jiangxi provinces have lower levels;and (3) up to 2021, there are 32 effective cities and 8 ineffective cities. The research implies that balancing the economy-environment relationship is crucial for higher efficiency. The LCSD evaluation method not only reflects the coordination level between the economy and the environment, but also integrates the research preference into the results, providing decision support for the government to formulate carbon reduction policies and allocate resources. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Redundancy

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Effects of TiO_(2)content on microstructure,thermal and mechanical properties of microwave sintered lunar regolith simulant

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science China(Technological sciences) 2025年第4期68卷 233-248页

作者： Zekai WANG Yan ZHOU Long XIAO Cheng ZHOU Lieyun DING National Center of Technology Innovation for Digital Construction School of Civil and Hydraulic EngineeringHuazhong University of Science and TechnologyWuhan430074China Planetary Science Institute China University of Geosciences(Wuhan)Wuhan430074China

Dense building components can be fabricated using lunar regolith simulants prepared via microwave *** this study,the microstructure and properties of such simulants containing high(14.72%),medium(6.71%),and low(1.7%)TiO_(2)contents prepared via microwave sintering at different temperatures(1030℃-1070℃)were *** sample sintered at 1060℃ with 14.72%TiO_(2)content exhibited the highest compressive strength of(125.2±22)*** was because high TiO_(2)content was more conducive to densification due to microwave *** influence of TiO_(2)content and sintering temperature on the strength of microwave-sintered samples was statistically analyzed,which revealed that sintering temperature was the main influencing factor(F value=187.3)and TiO_(2)content was the auxiliary influencing factor(F value=4.91).Using an enhanced multilayer perceptron model,a continuous surface diagram and prediction model were *** were then used to determine the influence of sintering temperature and TiO_(2)content on the compressive strength as well as to predict compressive strength with comparable *** study provides insights into microwave sintering of materials for future lunar construction.

关键词： lunar regolith simulant microwave sintering thermal property mechanical property modeling and prediction

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Enhanced Visible Light Photocatalytic Activity of BiOCl with Ti_(3)C_(2) Nanosheets for Pollutant Photodegradation

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Journal of wuhan university of technology(Materials science) 2025年第3期40卷 650-659页

作者： ZHENG Jingyan DENG Yichao XU Mengying LI Lian TREMBLAY Pier-Luc ZHANG Tian School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park Wuhan University of TechnologySanya 572024China Shaoxing Institute for Advanced Research Wuhan University of TechnologyShaoxing 312300China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineeringand Life ScienceWuhan University of TechnologyWuhan 430070China

Ti_(3)C_(2)/BiOCl composite was successfully synthesized by combining BiOCl(BOC)with an exposed(110)crystal plane and Ti_(3)C_(2) using a simple hydrothermal *** photocatalytic performance of produced composite was evaluated using the degradation of rhodamine B(RhB)and tetracycline hydrochloride(TCH)under visible *** results demonstrated that Ti_(3)C_(2)/BOC composite had higher photocatalytic activity than pure *** optimum incorporation amount of Ti_(3)C_(2) was 2 wt%.The photodegradation rate of 2 wt%-Ti_(3)C_(2)/BOC at 10 min to 20 mg/L RhB was 97.6%,which was much higher than that of BOC(75.3%).Similarly,the photodegradation rate of 2 wt%-Ti_(3)C_(2)/BOC to 10 mg/L TCH at 30 min was 80.4%,which was higher than BOC(68.1%).In addition,the prepared 2 wt%-Ti_(3)C_(2)/BOC composite also maintained good stability even after four *** impedance spectroscopy(EIS),transient photocurrent response(IT)and ultraviolet-visible diffuse reflectance spectroscopy(UV-vis)confirmed that the photoelectrochemical properties of 2 wt%-Ti_(3)C_(2)/BOC composite were significantly *** the basis of analyzing the action mechanism of photocatalyst,it was pointed out that·O_(2)^(-)and h~+were the main active substances in the photodegradation of RhB and TCH by 2 wt%-Ti_(3)C_(2)/BOC.

关键词： Ti_(3)C_(2)/BiOCl photodegradation rhodamine B tetracycline hydrochloride

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Answering reachability queries with ordered label constraints over labeled graphs

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Frontiers of computer science 2024年第1期18卷 105-117页

作者： Daoliang HE Pingpeng YUAN Hai JIN National Engineering Research Center for Big Data Technology and System Services Computing Technology and System LabCluster and Grid Computing LabSchool of Computer Science&TechnologyHuazhong University of Science and TechnologyWuhan 430074China

Reachability query plays a vital role in many graph analysis *** researches proposed many methods to efficiently answer reachability queries between vertex *** many real graphs are labeled graph,it highly demands Label-Constrained Reachability(LCR)query inwhich constraint includes a set of labels besides vertex *** researches proposed several methods for answering some LCR queries which require appearance of some labels specified in constraints in the *** that constraint may be a label set,query constraint may be ordered labels,namely OLCR(Ordered-Label-Constrained Reachability)queries which retrieve paths matching a sequence of ***,no solutions are available for ***,we propose DHL,a novel bloom filter based indexing technique for answering OLCR *** can be used to check reachability between vertex *** the answers are not no,then constrained DFS is ***,we employ DHL followed by performing constrained DFS to answer OLCR *** show that DHL has a bounded false positive rate,and it's powerful in saving indexing time and *** experiments on 10 real-life graphs and 12 synthetic graphs demonstrate that DHL achieves about 4.8-22.5 times smaller index space and 4.6-114 times less index construction time than two state-of-art techniques for LCR queries,while achieving comparable query response *** results also show that our algorithm can answer OLCR queries effectively.

关键词： graph ordered-label-constrained reachability partial index bloom filter query processing

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