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Quantitative evaluation framework and application for regional water sustainability under local energy transition

Advances in Climate Change Research 2023年第6期14卷 976-987页

作者： Lan-Tian ZHANG Ying-Ying LIU Sha CHEN Han-Bing LI Su-Mei LI Ke-Jun JIANG Ji GAO College of Environmental Science and Engineering Key Laboratory of Beijing on Regional Air Pollution ControlBeijing University of TechnologyBeijing 100124China Energy Research Institute Chinese Academy of Macroeconomic ResearchBeijing 100038China Environmental Defense Fund Beijing 100007China

Quantitatively analysing the impacts on regional water sustainability under the energy transition is vital to regional water management and specific technology selection,which is also relevant to dealing with climate *** study proposed a new multi-indicator evaluation framework for regional water sustainability under local energy transition to quantitatively evaluate the water withdrawal and water environment during the energy transition from a lifecycle *** integrated regional energy-water evaluation model was also developed based on the Low Emissions Analysis Platform with a combination of lifecycle assessment and water footprint *** province in China was then taken as a case study,and the impacts of its energy transition on regional water environmental sustainability,including quantity and quality,were investigated under five *** showed that the large-scale application of carbon capture,utilisation and storage technology and bio-energy equipped with carbon capture and storage technology could have additional advantages regarding CO_(2) ***,such technologies exhibit a minimal effect on improving water environmental quality and reducing water demand for the first time due to the leakage of absorbents,CO_(2) and other risky substances during capture,transportation and storage from a lifecycle *** finding drives the innovation of related breakthrough technologies with the promotion of water and end-treatment technologies in the future.

关键词： Water sustainability Energy-water nexus Transition path Spatial and temporal analyses

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BEVTransFusion: LiDAR-Camera Fusion Under Bird’s-Eye-View for 3D Object Detection with Transformers

BEVTransFusion: LiDAR-Camera Fusion Under Bird’s-Eye-View f...

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Pattern Recognition and Machine Learning (PRML), IEEE International Conference on

作者： Kaiqi Feng Yu Zhang State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou China State Key Laboratory of Industrial Control Technology Key Laboratory of Collaborative sensing and autonomous unmanned systems of Zhejiang Province College of Control Science and Engineering Zhejiang University Hangzhou China

Recently, there is growing research interest in extracting Bird’s-Eye-View (BEV) features from images and LiDAR to improve 3D object detection. However, existing methods mainly combine the features mechanically, which limits the utilization of BEV features. To address this limitation, we draw inspiration from TransFusion and design a two-layer transformer decoder to fuse LiDAR and camera BEV features. By doing so, we can omit the steps of reference point backprojection and feature sampling, which results in better correlation between the fused LiDAR and image features and higher robustness to the calibration matrix. Furthermore, we add 3D position encoding to the BEV features to compensate for the lack of height information. We also propose an length-width-height modulated attention mechanism to incorporate scale information. We also perform comprehensive experiments to verify the effectiveness of our methods.

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Atmospheric environment monitoring technology and equipment in China:A review and outlook

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Journal of Environmental sciences 2023年第1期123卷 41-53页

作者： Youwen Sun Ting Yang Huaqiao Gui Xin Li Weigang Wang Jun Duan Shushuai Mao Hao Yin Bin Zhou Jianlei Lang Haijin Zhou Cheng Liu Pinhua Xie Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHFIPSChinese Academy of SciencesHefei 230031China Department of Precision Machinery and Precision Instrumentation University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Beijing on Regional Air Pollution Control College of Environmental&Energy EngineeringBeijing University of TechnologyBeijing 100124China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200438China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes University of Science and Technology of ChinaHefei 230026China Anhui Province Key Laboratory of Polar Environment and Global Change University of Science and Technology of ChinaHefei 230026China

Accurate monitoring of the atmospheric environment and its evolution are important for understanding the sources,chemical mechanisms,and transport processes of air pollution and carbon emissions in China,and for regulatory and control *** study gives an overview of atmospheric environment monitoring technology and equipment in China and summarizes the major achievements obtained in recent *** has made great progress in the development of atmospheric environment monitoring technology and equipment with decades of *** manufacturing level of atmospheric environment monitoring equipment and the quality of products have steadily improved,and a technical&production system that can meet the requirements of routine monitoring activities has been *** is expected that domestic atmospheric environment monitoring technology and equipment will be able to meet future demands for routine monitoring activities in China and provide scientific assistance for addressing air pollution problems.

关键词： Atmospheric pollution Atmospheric environment Atmospheric monitoring Environmental instrument

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Effect of acid fracturing fluid modifying coal microstructure stimulated by ultrasonic

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International Journal of Mining science and technology 2025年第2期35卷 275-293页

作者： Shaojie Zuo Rui Gan Zhijie Wen Liang Zhang Zhizhong Jiang Fuping Zhao Chengwei Liu Kun Li Zhiyuan Xu College of Mining Guizhou UniversityGuiyang 550025China Shandong Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and TechnologyQingdao 266590China School of Emergency Management Xihua UniversityChengdu 610039China Guizhou Research Institute of Oil&Gas Exploration and Development Engineering Guiyang 550022China Liupanshui Normal University Liupanshui 553000China

The combination of ultrasonic and acid fracturing fluid can strengthen the modification effect on the micropore structure of the coal matrix,thereby enhancing the efficiency of the acid fracturing *** this research,acetic acid was utilized to formulate acid fracturing fluids with varying concentrations,and the evolutionary traits of both the acid fracturing fluids and ultrasonic waves in relation to coal samples were *** functional group structure,mineral composition,micropore structure and surface morphology of coal samples were characterized by FTIR,XRD,N_(2)adsorption at low temperature and *** results showed that aromatics(I)and branching parameters(CH_(2)/CH_(3))were reduced by 81.58%and 88.67%,respectively,after 9%acetic acid *** acid can dissolve carbonates and clay minerals in coal,create new pores,and increase porosity,pore volume and pore fractal *** modification by 7%acetic acid,the pore volume increased by 5.7 *** observation shows that the diameter of coal surface holes increases,EDS scanning shows that the content of mineral elements in coal decreases,the connectivity of coal holes increases,and the holes *** findings of this research offer theoretical direction for optimizing ultrasonic-enhanced acid fracturing fluid modification.

关键词： Acidic fracturing fluid Ultrasonic Coalbed methane Microstructure

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Distributed Estimation of a Flow Field using Cooperative Underwater Vehicles 63

Distributed Estimation of a Flow Field using Cooperative Und...

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63rd IEEE Conference on Decision and control, CDC 2024

作者： He, Yi Zheng, Ronghao Zhang, Senlin Liu, Meiqin Zhejiang University College of Electrical Engineering Hangzhou310027 China Zhejiang University State Key Laboratory of Industrial Control Technology Hangzhou310027 China Xi'an Jiaotong University The National Key Laboratory of Human-Machine Hybrid Augmented Intelligence Xi'an710049 China

ISBN: (纸本)9798350316339

This paper presents a distributed method of cooperative flow field estimation using a group of underwater vehicles in GPS-denied environments without directly measuring the ambient flow velocity. We consider that the vehicle can measure the relative positions of its neighbors and the absolute position when it surfaces. By formulating the measurements into the relative and absolute motion-integration error constraints, the flow field estimation problem is converted into an inverse problem that solves a determined system of nonlinear equations in a distributed way. We then propose a distributed consensus algorithm to solve the above equations, in which each vehicle first shares local flow estimate with its neighbors, and then updates the estimate using local constraints. The convergence of the proposed algorithm is strictly guaranteed, and simulations are provided to validate its effectiveness. © 2024 IEEE.

关键词： Inverse problems

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Superior high-temperature wear resistance of an Ir-Ta-Ni-Nb bulk metallic glass

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Journal of Materials science & technology 2023年第27期158卷 121-132页

作者： Fei Sun Shengtao Deng Jianan Fu Jiahua Zhu Dandan Liang Pengfei Wang Hang Zhao Feng Gong Jiang Ma Yanhui Liu Jun Shen Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Cross-scale Manufacturing Mechanics Southern University of Science and Technology Shenzhen 518055China Shanghai Engineering Research Center of Physical Vapor Deposition(PVD)Superhard Coating and Equipment Shanghai Institute of TechnologyShanghai 201418China Institute of Physics Chinese Academy of SciencesBeijing 100190China

Wear resistance is a critical consideration in engineering *** this study,we demonstrated an Ir-Ta-Ni-Nb bulk metallic glass(BMG)with outstanding high-temperature wear resistance and revealed its promising applications in extreme *** wear behavior and mechanism were systemati-cally investigated from room temperature(RT)to 750℃.The results show that the wear rate increases from∼2.65×10^(-6)mm^(3)N^(-1)m^(-1)to∼10.56×10^(-6)mm^(3)N^(-1)m^(-1)in the temperature span RT to 400℃,following abrasive wear and flash temperature-induced oxidative wear during the ***,at the higher temperature of 600℃,further heating due to frictional heat leads to a softening of the wear surface,resulting in a maximum wear rate of∼20.99×10^(-6)mm^(3)N^(-1)m^(-1)under softness-driven abrasive wear as well as oxidative ***,the wear resistance at an even higher temperature of 750℃shows a paradoxical improvement of∼7.08×10^(-6)mm^(3)N^(-1)m^(-1),which is attributed to the formation of an oxide layer with a thickness of several microns,avoiding violent wear of *** re-sults demonstrate the unreported outstanding high-temperature wear resistance of the Ir-Ta-Ni-Nb BMG,especially its excellent capability to resist wear at 750℃,leading to the promising applications of BMG in the fields of aerospace,metallurgy,and nuclear industries.

关键词： High-temperature alloy Superior wear resistance Wear mechanisms Bulk metallic glass

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Unveiling the geometric site dependent activity of spinel Co_(3)O_(4)for electrocatalytic chlorine evolution reaction

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Journal of Energy Chemistry 2024年第5期92卷 95-103页

作者： Linke Cai Yao Liu Jingfang Zhang Qiqi Jia Jiacheng Guan Hongwei Sun Yu Yu Yi Huang Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601AnhuiChina

Spinel cobalt oxide(Co_(3)O_(4)),consisting of tetrahedral Co^(2+)(CoTd)and octahedral Co^(3+)(CoOh),is considered as promising earth-abundant electrocatalyst for chlorine evolution reaction(CER).Identifying the catalytic contribution of geometric Co site in the electrocatalytic CER plays a pivotal role to precisely modulate electronic configuration of active Co sites to boost ***,combining density functional theory calculations and experiment results assisted with operando analysis,we found that the Co_(Oh) site acts as the main active site for CER in spinel Co_(3)O_(4),which shows better Cl^(-)adsorption and more moderate intermediate adsorption toward CER than CoTd site,and does not undergo redox transition under CER condition at applied *** by above findings,the oxygen vacancies were further introduced into the Co_(3)O_(4) to precisely manipulate the electronic configuration of Co_(Oh) to boost Cl^(-)adsorption and optimize the reaction path of CER and thus to enhance the intrinsic CER activity *** work figures out the importance of geometric configuration dependent CER activity,shedding light on the rational design of advanced electrocatalysts from geometric configuration optimization at the atomic level.

关键词： Chlorine evolution reaction Geometry effects Active chlorine Electronic configuration optimization Spinel oxides

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A Monocular Biological Simultaneous Localization and Mapping Method Based on a Bionic Vision Model

A Monocular Biological Simultaneous Localization and Mapping...

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Frontiers of Robotics and Software engineering (FRSE), International Conference on

作者： Sitong Guo Yu Zhang State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou China State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Key Laboratory of Collaborative sensing and autonomous unmanned systems of Zhejiang Province Hangzhou China

Animals can navigate robustly through large unknown environments, utilizing inaccurate sensor and egomotion cues. Inspired by the mechanism of the human visual system, this paper presents a biological simultaneous localization and mapping (SLAM) system based on a monocular vision sensor to perform navigation tasks in complex environments. Specifically, our contributions are two folds: an improved monocular visual odometry with a scale recovery algorithm to calibrate the estimated robot pose, and a bionic vision model based on image enhancement algorithm and feature extraction approach to detect closed-loop. Experiments on public datasets demonstrate that our proposed method performs competitively in illumination-varying scenarios indoors and outdoors, which achieve a trade-off to maintain performances in terms of accuracy, execution time, and robustness.

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A Cooperative Level Curve Tracking Algorithm without Communications 5

A Cooperative Level Curve Tracking Algorithm without Communi...

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5th International Conference on Intelligent Autonomous Systems, ICoIAS 2022

作者： Ding, Tianyi Zheng, Ronghao Zhang, Senlin Liu, Meiqin College of Electrical Engineering Zhejiang University State Key Laboratory of Industrial Control Technology Hangzhou China State Key Laboratory of Industrial Control Technology Hangzhou China Institute of Artificial Intelligence and Robotics xi'An Jiaotong University Xi'an China

ISBN: (数字)9781665498388

ISBN: (纸本)9781665498388

Algorithms for a multi-robot system to track the desired level curve of a scalar field have a wide range of applications in environmental exploration. Traditional algorithms generally require communications between robots for gradient estimation on the unknown environment. In the case where the accurate global locations and communications are limited, e.g., underwater environments, communication-based algorithms may be inapplicable. This paper proposes an improved algorithm that does not rely on communications nor global locations of robots. A distributed formation control law is designed to solve the level curve tracking problem. Each robot only uses local measurements of the field and relative positions of its neighbors to maintain formation. The dynamics and stability of the algorithm are analyzed. Additionally, the efficiency of the algorithm is validated through simulations. © 2022 IEEE.

关键词： Multipurpose robots

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EVADE: Targeted Adversarial False Data Injection Attacks for State Estimation in Smart Grid

IEEE Transactions on Sustainable Computing

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IEEE Transactions on Sustainable Computing 2024年第3期10卷 534-546页

作者： Tian, Jiwei Shen, Chao Wang, Buhong Ren, Chao Xia, Xiaofang Dong, Runze Cheng, Tianhao Ministry of Education Key Laboratory for Intelligent Networks and Network Security School of Cyber Science and Engineering Xi'an Jiaotong University Xi'an China Air Traffic Control and Navigation College Air Force Engineering University Xi'an China Information and Navigation College Air Force Engineering University Xi'an China School of Electrical and Electronic Engineering Nanyang Technological University Singapore School of Computer Science and Technology Xidian University Xi'an China

Although conventional false data injection attacks can circumvent the detection of bad data detection (BDD) in sustainable power grid cyber physical systems, they are easily detected by well-trained deep learning-based detectors. Still, state estimation models with deep leaning-based detectors are not secure due to the vulnerabilities and fragility of deep learning models. Using the related laws of conventional false data injection attacks and adversarial sample attacks, this paper proposes the targEted adVersarial fAlse Data injEction (EVADE) strategy to explore targeted adversarial false data injection attacks for state estimation in Smart Grid. The proposed EVADE attack strategy selects key state variables based on adversarial saliency maps to improve the attack efficiency and perturbs as few state variables as possible to reduce the attack cost. In this way, the EVADE attack strategy can bypass the detection of BDD and neural attack detection (NAD) methods (that is, maintaining deep stealthy) with a high success rate and achieve the attack target simultaneously. Experimental results demonstrate the effectiveness of the proposed strategy, posing serious and pressing concerns for sustainable cyber physical power system security. © 2016 IEEE.

关键词： Cyber attacks

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