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Mining Design Pattern Use Scenarios and Related Design Pattern Pairs:A Case Study on Online Posts

Journal of Computer science & Technology 2020年第5期35卷 963-978页

作者： Dong Liu Zhi-Lei Ren Zhong-Tian Long Guo-Jun Gao He Jiang school of Software Dalian University of TechnologyDalian 116024China Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province Dalian 116000China dut-ru international school of information science&engineering at dut Dalian University of Technology Dalian 116620China

In common design pattern collections,e.g.,design pattern books,design patterns are documented with templates that consist of multiple attributes,such as intent,structure,and sample *** adapt to modern developers,the depictions of design patterns,especially some specific attributes,should advance with the current programming technologies,for example,“known uses”,which exemplifies the use scenarios of design patterns in practice,and“related patterns”,which describes the relatedness between a design pattern and the others within a ***,it is not easy to update the contents of these attributes manually due to the diversity of the programming *** address this problem,in this work,we conducted a case study to mine design pattern use scenarios and related design pattern pairs from Stack Overflow posts to enrich the two *** first extracted the question posts relevant to each design pattern by identifying the design pattern ***,the topics of the posts were discovered by applying topic modeling ***,by analyzing the topics specified for each design pattern,we detected 195 design pattern use scenarios and 70 related design pattern pairs,involving 61 design patterns *** findings are associated with a variety of popular software frameworks and programming *** could complement the existing design pattern collections and help developers better acknowledge the usage and relatedness of design patterns in today's programming practice.

关键词： design pattern software documentation Stack Overflow topic model

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Multi-layer network embedding on scc-based network with motif

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Digital Communications and Networks 2024年第3期10卷 546-556页

作者： Lu Sun Xiaona Li Mingyue Zhang Liangtian Wan Yun Lin Xianpeng Wang Gang Xu Department of Communication engineering Institute of Information Science TechnologyDalian Maritime UniversityDalian116026China Key Laboratory of Big Data Intelligent Computing Chongqing University of Posts and TelecommunicationsChongqing400065China Key Laboratory for Ubiquitous Network and Service Software of Liaoning Province DUT School of Software Technology&DUT-RU International School of Information Science and EngineeringDalian University of TechnologyDalian 116620China College of information and Communication engineering Harbin Engineering UniversityHarbin 150001China school of information and Communication engineering Hainan UniversityHaikou 570228China State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China

Interconnection of all things challenges the traditional communication methods,and Semantic Communication and Computing(SCC)will become new *** is a challenging task to accurately detect,extract,and represent semantic information in the research of SCC-based *** previous research,researchers usually use convolution to extract the feature information of a graph and perform the corresponding task of node ***,the content of semantic information is quite *** graph convolutional neural networks provide an effective solution for node classification tasks,due to their limitations in representing multiple relational patterns and not recognizing and analyzing higher-order local structures,the extracted feature information is subject to varying degrees of ***,this paper extends from a single-layer topology network to a multi-layer heterogeneous topology *** Bidirectional Encoder Representations from Transformers(BERT)training word vector is introduced to extract the semantic features in the network,and the existing graph neural network is improved by combining the higher-order local feature module of the network model representation network.A multi-layer network embedding algorithm on SCC-based networks with motifs is proposed to complete the task of end-to-end node *** verify the effectiveness of the algorithm on a real multi-layer heterogeneous network.

关键词： Semantic communication and computing Multi-layer network Graph neural network Motif

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Concurrent optimization of structural topology and infill properties with a CBF-based level set method

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Frontiers of Mechanical engineering 2019年第2期14卷 171-189页

作者： Long JIANG Yang GUO Shikui CHEN Peng WEI Na LEI Xianfeng David GU Department of Mechanical engineering State University of New York at Stony BrookStony BrookNY 11794USA Department of Computer science State University of New York at Stony BrookStony BrookNY 11794USA State Key Laboratory of Subtropical Building science School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhou 510641China dut-ru international school of information science&engineering Dalian University of TechnologyDalian 116620China

In this paper,a parametric level-set-based topology optimization framework is proposed to concurrently optimize the structural topology at the macroscale and the effective infill properties at the micro/meso *** concurrent optimization is achieved by a computational framework combining a new parametric level set approach with mathematical *** the proposed framework,both the structural boundary evolution and the effective infill property optimization can be driven by mathematical programming,which is more advantageous compared with the conventional partial differential equatiodriven level set ***,the proposed approach will be more efficient in handling nonlinear problems with multiple *** of using radial basis functions(RBF),in this paper,we propose to construct a new type of cardinal basis functions(CBF)for the level set function *** proposed CBF parameterization ensures an explicit impose of the lower and upper bounds of the design *** overcomes the intrinsic disadvantage of the conventional RBF-based parametric level set method,where the lower and upper bounds of the design variables oftentimes have to be set by trial and error;A variational distance regularization method is utilized in this research to regularize the level set function to be a desired distanceregularized *** the distance information embedded in the level set model,the wrapping boundary layer and the interior infill region can be naturally *** isotropic infill achieved via the mesoscale topology optimization is conformally fit into the wrapping boundary layer using the shape-preserving conformal mapping method,which leads to a hierarchical physical structure with optimized overall topology and effective infill *** proposed method is expected to provide a timely solution to the increasing demand for multiscale and multifunctional structure design.

关键词： concurrent topology optimization parametric level set method cardinal basis function shell-infill structure design confonnal mapping

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A K self-adaptive SDN controller placement for wide area networks

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Frontiers of information Technology & Electronic engineering 2016年第7期17卷 620-633页

作者： Peng XIAO Zhi-yang LI Song GUO Heng QI Wen-yu QU Hai-sheng YU school of information science and Technology Dalian Maritime University school of information science and engineering Dalian Polytechnic University school of Computer science and engineering The University of Aizu school of Computer science and Technology Dalian University of Technology school of Computer Software Tianjin University

As a novel architecture,software-defined networking(SDN) is viewed as the key technology of future *** core idea of SDN is to decouple the control plane and the data plane,enabling centralized,flexible,and programmable network *** local area networks like data center networks have benefited from SDN,it is still a problem to deploy SDN in wide area networks(WANs) or large-scale *** works show that multiple controllers are required in WANs with each covering one small SDN ***,the problems of SDN domain partition and controller placement should be further ***,we propose the spectral clustering based partition and placement algorithms,by which we can partition a large network into several small SDN domains efficiently and *** our algorithms,the matrix perturbation theory and eigengap are used to discover the stability of SDN domains and decide the optimal number of SDN domains *** evaluate our algorithms,we develop a new experimental framework with the Internet2 topology and other available WAN *** results show the effectiveness of our algorithm for the SDN domain partition and controller placement problems.

关键词： Software-defined networking(SDN) Controller placement K self-adaptive method

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Current Trends and Perspectives of Detection and Location for Buried Non-Metallic Pipelines

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Chinese Journal of Mechanical engineering 2021年第5期34卷 118-146页

作者： Liang Ge Changpeng Zhang Guiyun Tian Xiaoting Xiao Junaid Ahmed Guohui Wei Ze Hu Ju Xiang Mark Robinson school of Mechanical and Electrical engineering Southwest Petroleum UniversityChengdu 610500China school of engineering Newcastle UniversityNewcastle NE17RUUK school of Electrical information Southwest Petroleum UniversityChengdu 610500China Electrical Department Sukkur IBA UniversitySukkur 65200Pakistan school of science Southwest Petroleum UniversityChengdu 610500China

Buried pipelines are an essential component of the urban infrastructure of modern *** buried pipes are mainly made of metal *** the development of material science and technology in recent years,non-metallic pipes,such as plastic pipes,ceramic pipes,and concrete pipes,are increasingly taking the place of pipes made from metal in various pipeline networks such as water supply,drainage,heat,industry,oil,and *** location technologies for the location of the buried metal pipeline have become mature,but detection and location technologies for the non-metallic pipelines are still *** this paper,current trends and future perspectives of detection and location of buried non-metallic pipelines are ***,this paper reviews and analyzes electromagnetic induction technologies,electromagnetic wave technologies,and other physics-based *** then focuses on acoustic detection and location technologies,and finally introduces emerging *** the technical characteristics of each detection and location method have been compared,with their strengths and weaknesses *** current trends and future perspectives of each buried non-metallic pipeline detection and location technology have also been ***,some suggestions for the future development of buried non-metallic pipeline detection and location technologies are provided.

关键词： Non-metallic pipeline Pipeline detection and location Non-destructive test and evaluation Acoustic technologies

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Low-loading gold in situ doped with sulfur by biomolecule-assisted approach for promoted electrochemical carbon dioxide reduction

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Nano Research 2023年第2期16卷 2059-2064页

作者： Meijie Tan Xiaoqian Han Sen ru Chao Zhang Zhouru Ji Zhaolin Shi Guomeng Qiao Yunying Wang ruixue Cui Qiquan Luo Jiqing Jiao Yaguang Li Tongbu Lu MOE international Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Institutes of Physical science and information Technology Anhui UniversityHefei 230601China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China College of Materials science and engineering State Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao 266071China Hebei Key Lab of Optic-electronic information and Materials College of Physics Science and TechnologyInstitute of Life Science and Green DevelopmentHebei UniversityBaoding 071002China

For electrochemical carbon dioxide reduction(CO_(2)RR),CO_(2)-to-CO conversion is considered an ideal route towards carbon neutrality for practical ***(Au)is known as a promising catalyst with high selectivity for CO;however,it suffers from high cost and low mass-specific *** this study,we design and prepare a catalyst featuring uniform S-doped Au nanoparticles on N-doped carbon support(denoted as S-Au/NC)by an in situ synthesis strategy using *** S-Au/NC displays high activity and selectivity for CO in CO_(2)RR with a Au loading as low as 0.4 wt.%.The Faradaic efficiency of CO(FECO)for S-Au/NC is above 95%at−0.75 V(***);by contrast,the FECO of Au/NC(without S)is only 58%.The Tafel slope is 77.4 mV·dec−1,revealing a favorable kinetics ***,S-Au/NC exhibits an excellent long-term stability for CO_(2)*** functional theory(DFT)calculations reveal that the S dopant can boost the activity by reducing the free energy change of the potential-limiting step(formation of the*COOH intermediate).This work not only demonstrates a model catalyst featuring significantly reduced use of noble metals,but also establishes an in situ synthesis strategy for preparing high-performance catalysts.

关键词： electrochemical CO_(2)reduction nanocomposites heterogeneous catalyst in situ sulfured heteroatoms

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Structural Thermal Stability of Graphene Oxide-Doped Copper–Cobalt Oxide Coatings as a Solar Selective Surface

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Journal of Materials science & Technology 2016年第11期32卷 1179-1191页

作者： M.Mahbubur Rahman Zhong-Tao Jiang Chun-Yang Yin Lee Siang Chuah Hooi-Ling Lee Amun Amri Bee-Min Goh Barry J.Wood Chris Creagh Nicholas Mondinos Mohmmednoor Altarawneh Bogdan Z.Dlugogorski Surface Analysis and Materials engineering Research Group School of Engineering & Information Technology Murdoch University Murdoch Western Australia 6150 Australia school of Sdence & engineering Teesside University Borough Road Middlesbrough TSI 3BA United Kingdom Department of Physics School of Distance Education Universiti Sains Malaysia Minden 11800 Penang Malaysia Department of Chemistry School of Chemical Sciences Universiti Sains Malaysia Minden 11800 Penang Malaysia Department of Chemical engineering Universitas Riau Pekanharu Indonesia school of Chemistry Bedson Building Newcastle University NE1 7RU United Kingdom school of Chemistry The University of Queensland St. Luda OLD 4072 Australia school of engineering & information Technology Murdoch University Murdoch Western Australia 6150 Australia

3d transition metal oxides based thin film coatings such as copper–cobalt oxides exhibit high absorption in the visible region and low emittance in the infrared to far-infrared region of the solar spectrum which is favourable for use as potential selective surface materials in photothermal devices. These materials have the potential to minimize heating while increasing absorption in the operative spectrum range and therefore achieve higher solar selectivity. A series of mixed copper–cobalt metal spinel oxides（Cu_xCo_yO_z）doped with graphene oxide thin films were deposited on commercial grade aluminium substrates using a sol-gel dip-coating technique at an annealing temperature of 500 °C in air for 1 h. Characterizations of the synthesized films were carried out by high temperature synchrotron radiation X-ray Diffraction（SRXRD）, UV–Vis, Fourier Transform infrared spectroscopy（FTIR） and X-ray photoelectron microscopy（XPS）techniques. High thermal stability of coatings with multiple phases, binary and ternary metal oxides, was defined through SR-XRD study. FTIR analysis shows moderate（〈80%） to high（up to 99%） reflectance in the infrared region while the UV–Vis investigations demonstrate that, in the visible region, solar absorption increases gradually（up to 95%） with the addition of graphene oxide to the Cu_x Co_y O_z *** the incorporation of 1.5 wt.% of graphene oxide to the copper–cobalt oxide coatings, a high solar selectivity of 29.01（the ratio of the average solar absorptance in visible and the average thermal emittance in infrared to far infrared region; α/ε） was achieved.

关键词： Coatings Sol-gel method Synchrotron radiation Fourier transform infrared spectroscopy X-ray diffraction X-ray photoelectron spectroscopy

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Kernel semi-supervised graph embedding model for multimodal and mixmodal data

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science China(information sciences) 2020年第1期63卷 247-249页

作者： Qi ZHANG rui LI Tianguang CHU school of information Technology & Management University of International Business & Economics Key Laboratory of Machine Perception(Ministry of Education) Peking University school of Mathematical sciences Dalian University of Technology State Key Laboratory for Turbulence and Complex Systems College of Engineering Peking University

Dear editor,Semi-supervised learning has obtained increasing interests in machine learning, because making use of both labeled and unlabeled training samples helps extracting discriminative features and meanwhile reduces the time-consuming and labor-intensive labeling burden. For extracting features upon multimodal (i.e., data of the same

关键词： Kernel semi-supervised graph embedding model for multimodal and mixmodal data

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Tailorable carbazolyl cyanobenzene-based photocatalysts for visible light-induced reduction of aryl halides

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Chinese Chemical Letters 2020年第7期31卷 1899-1902页

作者： Wei Ou ru Zou Mengting Han Lei Yu Chenliang Su international Collaborative Laboratory of 2D Materials for Optoelectronic science&Technology of Ministry of Education Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong ProvinceInstitute of Microscale OptoeletronicsShenzhen UniversityShenzhen 518060China school of Chemistry and Chemical engineering Yangzhou UniversityYangzhou 225002China

Herein,a series of carbazolyl cyanobenzene(CCB)-based organic photocatalysts with a broad range of photoredox capabilities were designed and synthesized,allowing precise control of the photocatalytic reactivity for the controllable reduction of aryl halides via a metal-free *** screened-out CCB(5CzBN),a metal-free,low-cost,scalable and sustainable photocatalyst with both strong oxidative and reductive ability,exhibits superior performance for both dehalogenation and C—C bond-forming arylation reactions.

关键词： Organic photocatalyst Halide C—C bond-formation Photocatalyst Reduction

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Electroless copper-phosphorus coatings with the addition of silicon carbide (SiC) particles

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international Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 615-622页

作者： Soheila Faraji Afidah Abdul Rahim Norita Mohamed Coswald Stephen Sipaut school of Chemical sciences Universiti Sains Malaysia11800 USMPenangMalaysia school of engineering and information Technology Universiti Malaysia Sabah88999 Kota KinabaluSabahMalaysia

Cu-P-silicon carbide （SiC） composite coatings were deposited by means of electroless *** effects of pH values,temperature,and different concentrations of sodium hypophosphite （NaH2PO2·H2O）,nickel sulfate （NiSO4·6H2O）,sodium citrate （C6H5Na3O7·2H2O） and SiC on the deposition rate and coating compositions were evaluated,and the bath formulation for Cu-P-SiC composite coatings was *** coating compositions were determined using energy-dispersive X-ray analysis （EDX）.The corresponding optimal operating parameters for depositing Cu-P-SiC are as follows：pH 9;temperature,90oC;NaH2PO2·H2O concentration,125 g/L;NiSO4·6H2O concentration,3.125 g/L;SiC concentration,5 g/L;and C6H5Na3O7·2H2O concentration,50 g/*** surface morphology of the coatings analysed by scanning electron microscopy （SEM） shows that Cu particles are uniformly *** hardness and wear resistance of Cu-P composite coatings are improved with the addition of SiC particles and increase with the increase of SiC content.

关键词： electroless deposited coating electroless copper plating silicon carbide particles sodium hypophosphite hardness wear resis-tance

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