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Saliency guided self-attention network for pedestrian attribute recognition in surveillance scenarios

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The Journal of China Universities of Posts and Telecommunications 2022年第5期29卷 21-29页

作者： Li Na wu yangyang Liu Ying Li Daxiang Gao Jiale School of Communication and Information Engineering Xi'an University of Posts and TelecommunicationsXi'an 710121China Key Laboratory of Electronic Information Application Technology for Scene Investigation Xi'an University of Posts and TelecommunicationsXian 710121China

Pedestrian attribute recognition is often considered as a multi-label image classification task. In order to make full use of attribute-related location information, a saliency guided self-attention network(SGSA-Net) was proposed to weakly supervise attribute localization, without annotations of attribute-related regions. Saliency priors were integrated into the spatial attention module(SAM). Meanwhile, channel-wise attention and spatial attention were introduced into the network. Moreover, a weighted binary cross-entropy loss(WCEL) function was employed to handle the imbalance of training data. Extensive experiments on richly annotated pedestrian(RAP) and pedestrian attribute(PETA) datasets demonstrated that SGSA-Net outperformed other state-of-the-art methods.

关键词： pedestrian attribute recognition saliency detection self-attention mechanism

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Experimental and Numerical Analysis of High-Strength Concrete Beams Including Steel Fibers and Large-Particle Recycled Coarse Aggregates

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Fluid Dynamics & Materials Processing 2021年第5期17卷 947-958页

作者： Chunyang Liu yangyang wu Yingqi Gao Zhenyun Tang Department of Civil Engineering Shandong Jianzhu UniversityJinan250101China Key Laboratory of Building Structural Retrofitting and Underground Space Engineering Shandong Jianzhu UniversityMinistry of EducationJinan250101China Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit Beijing University of TechnologyBeijing100124China

In order to study the performances of high-strength concrete beams including steel fibers and large-particle recycled aggregates,four different beams have been designed,tested experimentally and simulated *** varying parameters,the replacement rates of recycled coarse aggregates and CFRP(carbon fiber reinforced polymer)sheets have been *** failure mode of these beams,related load deflection curves,stirrup strain and shear capacity have been determined through monotonic loading *** simulations have been conducted using the ABAQUS finite element *** results show that the shear failure mode of recycled concrete beams is similar to that of ordinary concrete *** shear carrying capacity of high-strength concrete beams including steel fibers and large-particle recycled coarse aggregates grows with an increase in the replacement rate of recycled coarse *** with CFRP sheets can significantly improve the beam’s shear carrying capacity and overall resistance to deformation.

关键词： High-strength recycled concrete beam steel fiber large-particle recycled aggregates pre-damage reinforcement numerical simulation carrying capacity calculation

Enhancing Heat Transfer and Energy Storage Performance of Shell-and-Tube Latent Heat Thermal Energy Storage Unit with Unequal-Length Fins

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Journal of Thermal Science 2023年第6期32卷 2018-2031页

作者： wu yangyang LI Dong YANG Ruitong MÜSLÜM Arıcı LIU Changyu School of Architecture and Civil Engineering Northeast Petroleum UniversityDaqing163318China Engineering Faculty Mechanical Engineering DepartmentKocaeli UniversityUmuttepe CampusKocaeliİzmit41001Turkey

Previous studies in literatures adequately emphasized that inserting fins into phase change material is among the most promising techniques to augment thermal performance of shell-and-tube latent heat thermal energy storage *** this study,the novel unequal-length fins are designed from the perspective of synergistic benefits of heat transfer and energy storage performance,and the effects of arrangement,number and total length of unequal-length fins are numerically *** show that utilization of fins with ascending length,when short and long fins are located in the inlet and outlet of heat transfer fluid respectively,can further promote the heat transfer and energy storage performance compared with equal length fins,and a maximum 6.17%and 0.43%increment of heat transfer performance and stored energy is achieved in full melting time,*** number of unequal-length fins plays a major role in the energy storage,and 18.95%and 0.91%improvement of heat transfer performance and stored energy is realized when equipped with 2 unequal-length fins.A 21.17%improvement of the heat transfer performance is obtained when the total length of unequal-length fins is 18 *** present study is helpful to make further efforts to enhance heat transfer and energy storage of shell-and-tube latent heat thermal energy storage unit with unequal-length fins.

关键词： unequal-length fin enhanced heat transfer energy storage shell and tube heat exchanger PCM

Low carbon storage of woody debris in a karst forest in southwestern China

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Acta Geochimica 2019年第4期38卷 576-586页

作者： yangyang wu Libin Liu Chunzi Guo Zhonghua Zhang Gang Hu Jian Ni State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesLincheng West Road 99Guiyang 550081China University of Chinese Academy of Sciences Yuquan Road 19ABeijing 100049China Puding Karst Ecosystem Research Station Chinese Academy of SciencesPudingAnshun 562100China College of Chemistry and Life Sciences Zhejiang Normal UniversityYingbin Avenue 68& Jinhua 321004China Haihe River Water Resources Protection Bureau Haihe River Water Conservancy CommissionThe Ministry of Water Resources of the People's Republic of ChinaLongtan Road 15Tianjin 300170China School of Enviroment and Life Science Guangxi Teachers Education UniversityMingxiu East Road 175Nanning 530001China Key Laboratory of Environment Change and Resources Use in Beibu Gulf Ministry of EducationMingxiu East Road 175Nanning 530001China

The properties of woody debris(WD) vary across different forests under various soil *** to the relatively shallow and low amounts of soils on karst terrains, it is necessary to determine the WD carbon inventory of karst forests. In this study, we recorded WD with a basal diameter for standing snags and the largeend diameter for fallen logs of ≥ 1 cm. The carbon density of WD in a secondary karst mixed evergreen and deciduous broad-leaved forest that had been clear-cut 55 years ago in southwestern China were inventoried in a 2 ha plot. Woody debris carbon density calculated using specific gravity and carbon concentration was 4.07 Mg C ha^-1. Woody debris with diameters ≥ 10 cm(coarse WD) constituted 53.8% of total carbon storage whereas WD < 10 cm in diameters(fine WD) accounted for more pieces of WD(89.9%).Lithocarpus confinis contributed the most WD carbon(26.5%). Intermediate decayed WD was relatively more abundant, but WD with final decay contributed the least to the total pieces of WD(6.7%). The contribution of WD to carbon storage of karst forest was low compared to other forests worldwide. Significant positive correlations were found between WD carbon and biodiversity(R^2= 0.035,p < 0.01) and elevation(R^2= 0.047, p < 0.01) and negative correlations was found in outcrop coverage(R^2= 0.034, p <0.01). Further studies are needed to elucidate the ecological functions of WD to better understand their roles in maintaining biodiversity, enhancing productivity, and controlling vegetation degradation in karst forest ecosystems.

关键词： Secondary forest Fine woody debris Coarse woody debris Dead wood Karst Subtropical China

Enhanced nitrate removal from groundwater using a conductive spacer in flow-electrode capacitive deionization

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Chinese Chemical Letters 2024年第8期35卷 379-382页

作者： Hongjie Guo Qiang Wei yangyang wu Wei Qiu Hongliang Li Changyong Zhang College of Mining Engineering Taiyuan University of TechnologyTaiyuan 030024China CAS Key Laboratory of Urban Pollutant Conversion Department of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230026China

Flow-electrode capacitive deionization(FCDI)represents a promising approach for ion separation from aqueous ***,the optimization of spacer,particularly for nitrate-contaminated groundwa-ter systems,has often been *** research comprehensively investigates the influence of using a conductive(carbon cloth,CC)spacer on nitrate removal performance within FCDI system,comparing it to a non-conductive(nylon net,NN)*** both CC and NN FCDI systems,it is unsurprisingly that nitrate removal efficiency improved notably with the increasing current density and hydraulic retention time(HRT).Interestingly,the specific energy consumption(SEC)for nitrate removal did not show obvious fluctuations when the current density and HRT varied in both *** the auspiciously optimized process parameters,CC-FCDI attained a 20%superior nitrate removal efficiency relative to NN-FCDI,ac-companied by a notably diminished SEC for CC-FCDI,registering at a mere 28%of *** great improvement can be primarily attributed to the decrement in FCDI internal resistance after using con-ductive spacer,which further confirmed by electrochemical tests such as linear sweep voltammetry(LSV)and electrochemical impedance spectroscopy(EIS).Upon prolonged continuous nitrate removal at the optimized conditions,the CC-FCDI system achieved a consistent 90%nitrate removal efficiency with a low SEC of 2.7-7.8 kWh/kg NO_(3)-N,underscoring its steady ***,this study highlights the pivotal importance of careful spacer design and optimization in realizing energy-efficient groundwater treatment via FCDI.

关键词： Flow-electrode capacitive deionization Carbon cloth Nitrate Underground water Ions transport

Formation of the Huajiang Grand Canyon (southwestern China) driven by the evolution of a Late Pleistocene tiankeng

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Acta Geochimica 2022年第1期41卷 1-11页

作者： Yunlong Fan Andrea Columbu Kangning Xiong Guangjie Luo Song Li Xuefeng Wang yangyang wu Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000GansuChina Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed School of Geography and Resource ScienceGuizhou Education UniversityGuiyang 550018GuizhouChina Department of Chemistry Life Sciences and Environmental SustainabilityUniversity of Parma43124 ParmaItaly School of Karst Science Guizhou Normal UniversityGuiyang 550001GuizhouChina Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

Collapse is a common geomorphic process in karst areas,especially on the Yunnan-Guizhou Plateau,which has a tectonic background of integral *** frequent occurrence of collapse processes in karst underground caves and canyons indicates that collapses play an important role in the formation of *** an analysis of the morphology of a semicircular cliff in the Huajiang Grand Canyon and an investigation of sediments at the bottom of the cliff,a large-scale collapse event was found to have occurred.U-series dating of secondary calcium carbonate cement in the collapse breccias indicates that collapse processes occurred approximately 200 *** to the geomorphological evolution of the Huajiang Grand Canyon,the following geomorphic evolutionary process is proposed:underground river-cave hall-collapse of a tiankeng-tiankeng degradation-canyon *** findings also show that the dating of collapsed breccia cement can be effectively used to determine the development times of karst canyons and the formation ages of tiankengs.

关键词： Canyon Cave collapse Tiankeng Karst breccias Yunnan-Guizhou Plateau

Differential equation dynamical system based assessment model in GNSS interoperability

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Science China(Physics,Mechanics & Astronomy) 2011年第6期54卷 996-1003页

作者： HAN Tao LU XiaoChun WANG Xue RAO YongNan ZOU DeCai YANG JianFei wu yangyang National Time Service Center Xi'an 710600China Key Laboratory of Precision Navigation and Timing Technology Chinese Academy of SciencesXi'an 710600China Graduate University of the Chinese Academy of Sciences Beijing 100049China Department of Economics and Management Northwestern UniversityXi'an 710127China

With the development of Global Navigation Satellite System (GNSS),the idea of GNSS interoperability is born and has become the focus of study in the field of satellite *** popularity for GNSS to augment the interoperability with the existing ones necessitates the study of the assessment algorithm of this *** this paper,an assessment algorithm for interoperability comprehensive benefits based on the differential equation dynamical system is *** are two important aspects in GNSS that interoperability will affect:one is the performance advancement;the other one is the cost of adopting *** researching the complex relationship between the performance and cost,we found this relationship is similar as what between prey and predator in biomathematics,so the Lotka-Volterra model used to depict the prey-predator relationship is a felicitous *** building a differential dynamical model,we analyze the existence and stability of the positive equilibrium in the *** a Cost-Effective Function of GNSS is constructed based on the positive equilibrium,which is employed to assess the interoperability,qualitatively and ***,the paper demonstrates the significance of the model and its application by citing a numerical example.

关键词： interoperability assessment model differential dynamical system GNSS stability

DGEPN-GCEN2V: a new framework for mining GGI and its application in biomarker detection

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Science China(Information Sciences) 2019年第9期62卷 199-201页

作者： Jinyin CHEN Haibin ZHENG Hui XIONG yangyang wu Xiang LIN Shiyan YING Qi XUAN College of Information Engineering Zhejiang University of Technology

Dear editor,Deep learning is widely applied in various fields [1,2] recently. In the field of bioinformatics, deep learning also attracts many attentions of researchers. Danaee et al.[3] extracted depth functional features from high-dimensional gene expression profile by stacked denoising automatic encoder and identified a set of highly interacting genes for cancer biomarkers detection. Chen et al.[4] proposed a novel spectral clustering with automatic cluster number determination, which

关键词： BCS DGEPN-GCEN2V a new framework for mining GGI and its application in biomarker detection

识别和抽取XM L文档中的关系信息及其出现模式

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清华大学学报（自然科学版） 2005年第S1期45卷 1757-1761页

作者：雷庆吴扬扬华侨大学计算机科学系泉州362021

W eb中存在着大量描述实体间相互关联的信息,而目前的搜索引擎缺乏知识的处理和理解能力,无法对W eb中的关系信息进行识别。该文以XM L作为研究对象,提出了一种XM L文档中识别和抽取关系信息及其出现模式的方法。该方法按照用户的挖掘... 详细信息

W eb中存在着大量描述实体间相互关联的信息,而目前的搜索引擎缺乏知识的处理和理解能力,无法对W eb中的关系信息进行识别。该文以XM L作为研究对象,提出了一种XM L文档中识别和抽取关系信息及其出现模式的方法。该方法按照用户的挖掘请求搜集XM L文档;通过计算XM L文档的相似度来识别目标文档;建立用户挖掘模式并与目标文档进行模式匹配实现关系数据的抽取。实验结果表明提出的XM L相似度计算方法能较好的实现目标文档的识别,同时采用的模式表达和匹配方式也能较准确地从目标文档中抽取出用户所需的关系数据。

关键词：关系信息 XML相似度模式匹配数据抽取