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9th IEEE International Conference on Computer Science and Network technology, ICCSNT 2021

作者： Yu, Lubin Tian, Lianfang Du, Qiliang School of Automation Science And Engineering South China University And Technology Guangzhou China Zhuhai China Key Laboratory of Marine Environmental Survey Technology And Application Ministry of Natural Resources Guangzhou China Key Laboratory of Autonomous Systems Network Control of Ministry of Education Guangzhou China

ISBN: (纸本)9781665443647

Recently, action recognition based on graph data has received widespread attention. Graph convolutional neural networks need a large amount of graph data support. Therefore, graph data augmentation has significant research value. Existing graph data augmentation methods are generally based on graph structure or graph node features to add or remove graph edges, leading to problems in generality and effectiveness. To improve the above issues, this paper utilizes adaptive graph convolution to design an algorithm that obtains the optimal graph connection for graph data augmentation as graph convolution proceeds, which greatly improves the generalization and effectiveness. The results on NTU-RGBD and Kinetics-Skeleton datasets for skeleton-based action recognition prove that our proposed method reveals better results than existing methods. © 2021 IEEE.

关键词： Convolution

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Health monitoring system design of coastal high-piled wharf

Health monitoring system design of coastal high-piled wharf

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4th International Conference on Civil engineering, Architecture and Building Materials, CEABM 2014

作者： Liu, Hong Biao Li, Hong Nan Dalian University of Technology Dalian 116024 China Tianjin Research Institute for Water Transport Engineering Key Laboratory of Harbor and Marine Structure Safety Ministry of Communications Tianjin 300456 China

ISBN: (纸本)9783038351641

There is little research on health monitoring technology of coastal ports at present. Based on the characteristics of high-piled wharf in coastal ports and staying in particular environment, the mechanical properties of coastal high-piled wharf is analyzed, and the health monitoring parameters are proposed. Finally, the health monitoring system of coastal high-piled wharf is constructed. And the appropriate structural health monitoring system is designed for standardized front segment of a high-piled wharf in the Tianjin port. The monitoring parameters are proposed, and the sensors and specification parameters are provided to reach the point. The data acquisition and transmission subsystem implementation technology and related indicators are given. This can provide a reference for the long-term health monitoring system construction in coastal high-piled wharf structure. © (2014) Trans Tech Publications, Switzerland.

关键词： Data acquisition

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Effect of Zinc Oxide Nanoparticles on Denitrification and Denitrifying Bacteria Communities in Typical Estuarine Sediments

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Journal of Ocean University of China 2021年第3期20卷 599-607页

作者： CHEN Xi XIANG Zhuangzhuang REN Zhaomeng HUANG Xiao LI Hui SUN Pengfei BAI Jie College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China

For revealing the effects of increasing of zinc oxide nanoparticles(ZnO NPs)on denitrification and denitrifying bacteria communities in estuarine sediments,the surface sediments of two typical estuaries(the Yangtze River Estuary and the Yellow River Estuary)were added with medium concentration(170mgL−1)and high concentration(1700mgL−1)of ZnO NPs for anaerobic cul-ture in *** concentration of NO_(3)^(−)and NO_(2)^(−),the reductase activity and denitrification rate were measured by physico-chemical analysis,nirS gene abundance and denitrifying bacteria communities by molecular biological *** results showed that ZnO NPs inhibited NO_(3)^(−), NO_(2)^(−)reduction process and NO_(3)^(−), NO_(2)^(−)reductase activity,and a stronger inhibition effect resulting from the higher ZnO NPs *** NPs decreased nirS gene abundance and community diversity of denitrifying *** addition,the inhibition degree of ZnO NPs on the denitrification process of sediments in different estuaries was *** results were of great significance for evaluating the potential ecological toxicity and risks of nanomaterials in estuaries.

关键词： zinc oxide nanoparticles denitrification denitrifying bacteria community estuarine sediments

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Effect of C/N Ratio on Nitrogen Removal of A/O-MBBR Process for Treating Mariculture Wastewater

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Journal of Ocean University of China 2021年第4期20卷 879-885页

作者： CHEN Xi XIANG Zhuangzhuang HUANG Xiao RONG Huimin BAI Jie ZHAO Yangguo College of Marine Life Science Ocean University of ChinaQingdao 266003China College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Nanjing University of Information Science and Technology Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing 210044China Key Laboratory of Marine Environment and Ecology(Ocean University of China)Ministry of Education Qingdao 266100China

In order to explore the effect of carbon and nitrogen(C/N)ratio on the performance of anoxic/aerobic-moving bed bio-film reactor(A/O-MBBR)process for treating mariculture wastewater,a laboratory-scale A/O-MBBR was *** results showed that the reduction of C/N ratio was conducive to improving the removal efficiency of chemical oxygen demand(COD)and ammonia nitrogen(NH_(4)^(+)-N),while inhibiting that of nitrite nitrogen(NO_(2)^(−)-N)and nitrate nitrogen(NO_(3)^(−)-N).The extracellular polymeric substances(EPS)in anoxic zone were significantly higher in concentration than that in aerobic zone although they both declined with decrease of C/N *** result provides solid support for better controlling the pollution of mariculture wastewater.

关键词： mariculture wastewater C/N ratio A/O-MBBR process EPS

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Uptake, Distribution, and Transformation of CuO NPs in a Floating Plant Eichhornia crassipes and Related Stomatal Responses

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ENVIRONMENTAL SCIENCE & technology 2017年第13期51卷 7686-7695页

作者： Zhao, Jian Ren, Wenting Dai, Yanhui Liu, Lijiao Wang, Zhenyu Yu, Xiaoyu Zhang, Junzhe Wang, Xiangke Xing, Baoshan [†] College of Environmental Science and Engineering and Ministry of Education Key Laboratory of Marine Environment and Ecology Ocean University of China Qingdao 266100 China[‡] Institute of Environmental Processes and Pollution Control and School of Environmental and Civil Engineering Jiangnan University Wuxi 214122 China[§] Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China[∥] School of Environment and Chemical Engineering North China Electric Power University Beijing 102206 China[⊥] Stockbridge School of Agriculture University of Massachusetts Amherst Massachusetts 01003 United States

Engineered nanoparticles (NPs) are being released into aquatic environments with their increasing applications. In this work, we investigated the interaction of CuO NPs with a floating plant, water hyacinth (Eichhornia crassipes). CuO NPs (SO mg/L) showed significant growth inhibition on both roots and shoots of E. crassipes after 8-day exposure, much higher than that of the bulk CuO particles (50 niga) and their corresponding dissolved Cu2+ ions (0.30 mg/L). Scanning electron and light microscopic observations showed that the root caps and meristematic zone of E. Crassipes were severely damaged after CuO NP exposure, with disordered cell arrangement and a destroyed elongation zone Of root tips. It is confirmed that CuO NPs could be translocated to shoot from both roots and submerged leaves. As detected by X-ray absorption near-edge spectroscopy analysis (XANES), CuO NPs were Observed in toots, submerged leaves, and emerged leaves. Cu2S and other Cu, species were also detected in these tissues, providing solid,evidence of the transformation of CuO NPs. In addition, stomatal closure was observed during, CuO NPs-leaf contact, which was induced by the :production of H2O2 and increased Ca level in leaf guard cells. These findings are helpful for better understanding the fate of NPs in aquatic plants and related biological respones.

关键词： NANOPARTICLES COPPER oxide WATER hyacinth

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Use ANSYS to simulate the structure-soil interaction between inclined pile bulkhead and high filling in deep water port

Use ANSYS to simulate the structure-soil interaction between...

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2009 Joint International Conference on Modelling and Simulation

作者： Chongyu, Wang Xiaoping, Liu Zhouhong, Cao Key Laboratory of Harbor and Marine Structure Safety Ministry of Communications Tianjin Research Institute of Water Transport Engineering Tianjin 300456 China Changsha University of Science and Technology Changsha 410076 China

ISBN: (纸本)9781846260612

Hydraulic fill was frequently used for forming land in the port construction. The storage yard forming of a deep water port may need high filling up to 30m, so the bulkhead structure will bear the soil pressure produced by high filling. A deep water port's back platform was designed as inclined pile bulkhead structure, the bulkhead structure was built on soft foundation, In view of that the structure system's internal force and deformation will be quite complicated. This paper presents Finite element method to simulate high filling construction process, analyzes the structure's deformation and mechanics characteristics, sums up some rules about the inclined pile bulkhead structure. The conclusions of this paper can be used as a reference for similar projects in future.

关键词： Piles

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Multi-Channel Based on Attention Network for Infrared Small Target Detection

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Journal of Shanghai Jiaotong university(Science) 2024年第3期29卷 414-427页

作者：张彦军王碧云蔡云泽 Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Institute of Aerospace Control Technology Shanghai 201109China Infrared Detection Technology R&D Center of China Aerospace Science and Technology Corporation Shanghai 201109China Key Laboratory of System Control and Information Processing Ministry of Education of ChinaShanghai 200240China Shanghai Engineering Research Center of Intelligent Control and Management Shanghai 200240China Key Laboratory of Marine Intelligent Equipment and System of Ministry of Education Shanghai Jiao Tong UniversityShanghai 200240China Institute of Marine Equipment Shanghai Jiao Tong UniversityShanghai 200240China

Infrared detection technology has the advantages of all-weather detection and good concealment,which is widely used in long-distance target detection and tracking ***,the complex background,the strong noise,and the characteristics of small scale and weak intensity of targets bring great difficulties to the detection of infrared small targets.A multi-channel based on attention network is proposed in this paper,aimed at the problem of high missed detection rate and false alarm rate of traditional algorithms and the problem of large model,high complexity and poor detection performance of deep learning ***,given the difficulty in extracting the features of infrared multiscale and small dim targets,the multiple channels are designed based on dilated convolution to capture multiscale target ***,the coordinate attention block is incorporated in each channel to suppress background clutters adaptively and enhance target *** addition,the fusion of shallow detail features and deep abstract semantic features is realized by synthesizing the contextual attention fusion ***,it is verified that,compared with other state-of-the-art methods based on the datasets SIRST and MDFA,the proposed algorithm further improves the detection effect,and the model size and computational complexity are smaller.

关键词： infrared image small target detection deep learning attention mechanism feature fusion

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Free Space Transmission Technique for Microwave Detection of Wheat Moisture Content 5

Free Space Transmission Technique for Microwave Detection of...

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5th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2022

作者： He, Minghao Tang, Chunrui Li, Yibing College of Information and Communications Engineering Harbin Engineering University Key Laboratory of Advanced Marine Communication and Information Technology Ministry of Industry and Information Technology Harbin China China Coal Technology Engineering Group Chongqing Research Institute State Key Lab of Methane Disaster Monitoring & Emergency Technology Chongqing China

ISBN: (数字)9781665472111

ISBN: (纸本)9781665472111

Moisture content is an essential indicator for assessing wheat quality, which determines the safety of wheat storage. A measurement system based on the principle of microwave transmission method is designed for a fast and non-destructive grain moisture content determination. The detection system mainly consists of the Agilent PNA-X Series Microwave Network Analyzer, the transmitting and receiving horn antennas, the slide rail, and the sample groove. The key idea of this research is to verify the linear relationship between the scattering parameter and the moisture content in a specific frequency range of 2.6-4.0 GHz. The correlation coefficient and root mean square error are used to evaluate the fitting degree of the linear model. The experimental results might provide a new reference for online real-time detection of wheat quality. © 2022 IEEE.

关键词： Scattering parameters

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Tri-functional lanthanum-based biochar for efficient phosphorus recovery,bacterial inhibition,and soil fertility enhancement

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Biochar 2023年第1期5卷 302-318页

作者： Xiuxiu Jia Xue Zhao Yingtang Zhou Fan Li Wen Liu Yimin Huang Hucai Zhang Jinxing Ma Guangzhi Hu Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504China College of Chemistry and Engineering Yunnan Normal UniversityKunming 650092China National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004China Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education School of EcologyEnvironment and ResourcesGuangdong University of TechnologyGuangzhou 510006China

Excess phosphorus(P)in water can lead to eutrophication and upset ecological *** this study,biochar with ultrathin two-dimensional nanosheets from the natural mesocarp of shaddock was chosen as the *** highly dispersed and small particle size of La(OH)_(3) on the surface of the nanosheets(MSBL3)was successfully achieved using chemical impregnation for the adsorption of P in aqueous solution,and the maximum adsorption capacity was 260.0 mg P g^(−1)[La].The differences in surface crystallization of La(OH)_(3) on biochar at different La loadings were analyzed using the high-precision characterization *** six adsorption-desorption cycles,MSBL3 retained 76.7%of its initial performance in terms of the P adsorption *** preparation of 1 g of MSBL3 costs about RMB 1,and it could reduce the P concentration in 2.6 ton of Laoyu River water to below the eutrophication threshold;and the inhibitory effect of MSBL3 on the eutrophication of water bodies was confirmed by the growth state of water ***,0.1 M MSBL3 could inhibit Escherichia coli and Staphylococcus aureus up to 98.7%and 85.0%,respectively,which indicates that MSBL3 can be used to recover P from water and also to improve water *** addition,the growth of the maize seedlings verified that the P-absorbed MSBL3 waste is a good soil fertilizer and can solve the problem of post-treatment of the *** conclusion,MSBL3 prepared in this study is a promising P sorbent for application.

关键词： Two-dimensional ordered biochar Lanthanum hydroxide phosphorus adsorbent Adsorption sludge re-planning Antibacterial

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Real-time Detection and Classification for Targeted marine Mammals

Real-time Detection and Classification for Targeted Marine M...

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2021 OES China Ocean Acoustics, COA 2021

作者： Chen, Yankun Wang, Weiping Liang, Yinian Zhou, Defu Dong, Chao Li, Jie Guangzhou510300 China Key Laboratory of Marine Environmental Survey Technology and Application Ministry of Natural Resources Guangzhou510300 China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai519000 China Wireless Acoustic Radio Cooperative Communications and Application Laboratory Guangzhou China

ISBN: (纸本)9781728181905

With the continuous development of offshore engineering, major offshore projects develop rapidly. During the development of offshore engineering, different degrees of noise will be generated, and the man-made noise can have harmful effects on marine mammals. Currently, The researchers usually use Passive Acoustic Monitoring(PAM) method to monitor the marine mammals. However, it is impossible to acquire, monitor and analyze the sound of marine mammals in real time and lack of comprehensive information of marine mammals monitoring, and the data analysis and study of vocalization rules can only be carried out after data collection is completed and equipment is recovered. Therefore, this paper proposes a real-time automatic detection and classification technology to monitor targeted marine mammals efficiently and continuously timely in offshore engineering areas. © 2021 IEEE.

关键词： Offshore oil well production

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