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International Conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Wei, Guang Ma, Feng Guo, Hua School of Transportation and Logistics Engineering Wuhan University of Technology Wuhan430000 China State Key Laboratory of Maritime Technology and Safety Wuhan University of Technology Wuhan430000 China Intelligent Transportation System Center Wuhan University of Technology Wuhan430000 China CHN Energy Shipping Company Beijing100044 China

ISBN: (纸本)9789819639762

This paper proposes a hierarchical reasoning method for shoreline extraction that relies solely on a camera and visual algorithms. First, the DeepLabV3+ algorithm is used to extract water bodies from images, and the Canny operator is applied to outline these water bodies. Subsequently, the YOLOv8-seg algorithm is used to extract contours of objects encountered in the image, helping to eliminate occlusions caused by these objects. Finally, the keyPoint-RCNN algorithm is employed to distinguish between the left and right shorelines, achieving the extraction of the shoreline. For key point detection, a creation method of datasets is proposed that improves the target and key point detection capabilities of the keyPoint-RCNN algorithm by 27.1% and 2.2%, respectively. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： keypoint Detection Shoreline Hierarchical Reasoning Visual Algorithms

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Machine learning for membrane bioreactor research:principles,methods,applications,and a tutorial

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Frontiers of Environmental Science & Engineering 2025年第3期19卷 119-144页

作者： Yizhe Lai Kang Xiao Yifan He Xian Liu Jihua Tan Wenchao Xue Aiqian Zhang Xia Huang Beijing Yanshan Earth Critical Zone National Research Station College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 101408China Key Laboratory of Earth System Numerical Modeling and Application University of Chinese Academy of SciencesBeijing 101408China Environmental Chemistry Faculty College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 101408China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Energy Environmentand Climate ChangeSchool of EnvironmentResourcesand DevelopmentAsian Institute of TechnologyP.O.Box 4Klong LuangPathumthani 12120Thailand State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Membrane fouling poses a significant challenge to the sustainable development of membrane bioreactor(MBR)technologies for wastewater *** accurate prediction of the membrane filtration process is of great importance for identifying and controlling *** learning methods address the limitations of traditional statistical approaches,such as low accuracy,poor generalization ability,and slow convergence,particularly in predicting complex filtration and fouling processes within the realm of big *** article provides an in-depth exposition of machine learning *** study then reviews advances in MBRs that utilize machine learning methods,including artificial neural networks(ANN),support vector machines(SVM),decision trees,and ensemble *** on current literature,this study summarizes and compares the model input and output characteristics(including foulant characteristics,solution environments,filtration conditions,operating conditions,and time factors),as well as the selection of models and optimization *** modeling procedures of SVM,random forest(RF),back propagation neural network(BPNN),long short-term memory(LSTM),and genetic algorithm-back propagation(GA-BP)methods are elucidated through a tutorial *** simulation results demonstrated that all five methods yielded accurate predictions with R2>***,the existing challenges in the implementation of machine learning models in MBRs were *** is notable that integration of deep learning,automated machine learning(AutoML)and explainable artificial intelligence(XAI)may facilitate the deployment of models in practical engineering *** insights presented here are expected to facilitate the establishment of an intelligent control framework for MBR processes in future endeavors.

关键词： Membrane bioreactor Machine learning Pollutant removal Membrane fouling Model prediction

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Design and optimization of an automatic hydraulic steer-by-wire system for an agricultural chassis

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International Journal of Agricultural and Biological Engineering 2022年第1期15卷 132-138页

作者： Yinhao Jin Yanwei Yuan Licheng Zhu Decheng Wang Bo Zhao Xianfa Fang College of Engineering China Agricultural UniversityBeijing 100083China State Key Laboratory of Soil-Plant-Machine System Technology Chinese Academy of Agricultural Mechanization SciencesBeijing 100083China

To meet the requirements of fast steering at low vehicle speed and slow steering at high vehicle speed,the automatic steering of agricultural chassis must control both the wheel steering angle and the steering angle’s angular *** study applied hydraulic steer-by-wire technology to the automatic steering control of agricultural ***,the transmission mechanism of the designed steering system was *** to the rule of least squares,aiming at the minimum sum of squares of errors between 10 ideal outer wheel angles and real outer wheel angles,the optimal solution of hole spacing on both sides of the steering hydraulic cylinder piston rod was 925 *** outer wheel angle error of the optimized steering mechanism throughout the steering stroke was less than 0.15°.Additionally,a hydraulic steer-by-wire system was developed,and the parameters of its critical components were ***,the compound control strategy of the steering cylinder piston rod displacement and moving speed was formulated for this automatic steering *** entire control system included a valve control signal calculation model,an initial velocity calculation model,a correction velocity calculation model,and an attenuation velocity calculation model,and the formulae of each model were *** on the optimized parameters and the developed control strategy,a simulation model was built in AMESim,and simulation results showed that the proposed control strategy could achieve simultaneous controls of piston rod displacement and speed at different vehicle speeds and *** horizontal and vertical displacements of the right wheel center were plotted for typical vehicle speeds and steering *** results of this study provided a new idea for the application of hydraulic steer-by-wire technology in the automatic steering of agricultural chassis.

关键词： optimal design steering mechanism automatic steering simulation analysis

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Harmonic Voltage Effect on Partial Discharge Characteristics of Oil-Paper Insulation Under Non-uniform Electric Field 18th

Harmonic Voltage Effect on Partial Discharge Characteristics...

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18th Annual Conference of China Electrotechnical Society, ACCES 2023

作者： Dai, Weiju Hong, Zhihu Wang, Shan Qian, Guochao Wu, Jie Xia, Ruochun Electric Power Research Institute Yunnan Power Grid Co. Ltd. Kunming China State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing China

ISBN: (纸本)9789819710638

In the new power system, the harmonic source and the content increase, which puts forward a new test to the oil-impregnated paper insulation performance of the transformer. Therefore, this paper carries out the research on the effect of harmonic voltage on oil-impregnated Paper insulation partial discharge (PD) by means of the partial discharge platform under the action of harmonic voltage, and analyses the influence law of harmonic voltage frequency on partial discharge parameters. The results show that the harmonic voltage changes the partial discharge inception situation for the oil-impregnated paper due to the differences in harmonic polarity at different frequencies from the 50 Hz-industrial voltage. The split-peak phenomenon appears in all of the PD patterns of the oil-impregnated paper under the action of harmonic voltages and it is more obvious in the higher harmonic frequency. The harmonic voltage causes the maximum and average discharge magnitude increases, whereas the number of discharge pulses and discharge repetition rate decreased under the positive and negative discharge. © Beijing Paike Culture Commu. Co., Ltd. 2024.

关键词： Partial discharges

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MvEchoSeg: One-shot In-context Learning for Multi-view Echocardiography Segmentation

MvEchoSeg: One-shot In-context Learning for Multi-view Echoc...

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2024 IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2024

作者： Guo, Yuting Duan, Ya Song, Wenfeng Li, Nannan Li, Aili Li, Shuai Beihang University State Key Laboratory of Virtual Reality Technology and Systems Beijing100191 China University of Chinese Academy of Sciences State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China Beijing Information Science and Technology University School of Computer Science Beijing100192 China Dalian Maritime University School of Information Science and Technology Dalian116000 China China-Japan Friendship Hospital Beijing100029 China

ISBN: (纸本)9798350386226

Echocardiography is the clinical standard for evaluation of cardiac morphology, and function, and providing hemodynamic parameters in patients with known or suspected heart disease. Due to the diversity and complexity of diagnostic tasks, comprehensive interpretation of echocardiography often requires multi-view imaging for integrated metric analysis. Deep learning methods have become the mainstream approach for echocardiography segmentation. However, achieving segmentation of multi-view echocardiography still requires a substantial amount of annotation. To remedy this, we propose a one-shot in-context learning network mvEchoSeg for multi-view echocardiography segmentation. This network requires only one annotated image for each view. Specifically, we propose a Task Prompt Identifier (TPI) module to identify the task type of the image and allocate the most precise task prompt for it, with minimal adaptation of CLIP and few-shot strategies. Additionally, we leverage a unified In-Context Model (ICM) capable of performing a diverse set of echocardiography segmentation tasks automatically. Using fine-tuning and low-rank adapters improved the performance of the pre-trained model, achieving significant results with minimal training cost. Furthermore, we collect a multi-view echocardiography dataset (MVECD) with 8 views to evaluate our method. The results show an improvement of more than 10% in the DICE score compared to the SOTA foundational medical image segmentation models. To our knowledge, this is the first exploration of a one-shot model for multi-view echocardiography segmentation. Our codes and models are available at https://***/stellating/mvEchoSeg. © 2024 IEEE.

关键词： Image segmentation

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Metochalcone induces senescence-associated secretory phenotype via JAK2/STAT3 pathway in breast cancer

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Oncology Research 2024年第5期32卷 943-953页

作者： JIANBO ZHOU FENG WAN BIN XIAO XIN LI CHENG PENG FU PENG Department of Pharmacology West China School of PharmacySichuan UniversityChengduChina State Key Laboratory of Southwestern Chinese Medicine Resources Chengdu University of Traditional Chinese MedicineChengduChina Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologySichuan UniversityChengduChina Chengdu No.1 Pharmaceutical Co. Ltd.PengzhouChina Chengdu Push Bio-Technology Co. Ltd.ChengduChina

Breast and lung cancers are the leading causes of mortality and most frequently diagnosed cancers in women and men,respectively,*** the antitumor activity of chalcones has been extensively studied,the molecular mechanisms of isoliquiritigenin analog 2',4',4-trihydroxychalcone(metochalcone;TEC)against carcinomas remain less well *** this study,we found that TEC inhibited cell proliferation of breast cancer BT549 cells and lung cancer A549 cells in a concentration-dependent *** induced cell cycle arrest in the S-phase,cell migration inhibition in vitro,and reduced tumor growth in ***,transcriptomic analysis revealed that TEC modulated the activity of the JAK2/STAT3 and P53 *** triggered the senescence-associated secretory phenotype(SASP)by repressing the JAK2/STAT3 *** mechanism of metochalcone against breast cancer depended on the induction of SASP via deactivation of the JAK2/STAT3 pathway,highlighting the potential of chalcone in senescence-inducing therapy against carcinomas.

关键词： Metochalcone Breast cancer Lung cancer SASP JAK2/STAT3

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Strategic Bidding for Wind-PV-Storage Power Station Clusters Participating in Day-ahead Energy Market Based on Conditional Value at Risk Under Dual Settlement Mode 11

Strategic Bidding for Wind-PV-Storage Power Station Clusters...

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11th China International Conference on Electricity Distribution, CICED 2024

作者： Du, Peng Sun, Haonan Liu, Nian Jia, Na Zhu, Xiaoyi North China Electric Power University State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources Beijing China Science and Technology Research Institute China Three Gorges Corporation Beijing China

ISBN: (纸本)9798350368345

Nowadays, it is inevitable for renewable energy power stations to participate in market-oriented competition. In this paper, a strategic bidding model based on conditional value at risk (CVaR) and dual settlement mode (DSM) for wind-photovoltaic-energy storage power station clusters (WSSC) participating in the day-ahead energy market is expounded. To begin with, a new reporting method that adding the power of ESS to the bidding quantity of renewable energy is proposed. Then, considering CVaR and DSM simultaneously, a scenario-based strategic bidding model is put forward. In the end, case studies indicate the significance of energy storage system (ESS) in arbitrage, minimizing deviation assessment punishment and power curtailment punishment. Besides, decision maker can choose suitable risk weight factor according to their own degree of risk preference to make a perfect balance between profit and risk. Apart from that, numerical results also validate that bidding as a whole for WSSC owns more advantages than bidding independently over bid-winning quantity, profit and CVaR. © 2024 IEEE.

关键词： Windmill

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Constructing a Raman and surface-enhanced Raman scattering spectral reference library for fine-particle analysis

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Journal of Environmental Sciences 2022年第8期34卷 1-13页

作者： Hui Chen Fengkui Duan Kebin He Jingjing Du Zhenli Sun Suhua Wang Key Laboratory of Resources and Environmental System Optimization of Ministry of Education College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000 China

Fine particles associated with haze pollution threaten the health of over 400 million people in China. Owing to excellent non-destructive fingerprint recognition characteristics, Raman and surface-enhanced Raman scattering(SERS) are often used to analyze the composition of fine particles to determine their physical and chemical properties as well as reaction mechanisms. However, there is no comprehensive Raman spectral library of fine particles. Furthermore, various studies that used SERS for fine-particle composition analysis showed that the uniqueness of the SERS substrates and different excitation wavelengths can produce a different spectrum for the same fine-particle component. To overcome this limitation, we conducted SERS experiments with a portable Raman spectrometer using two common SERS substrates(silver(Ag) foil and gold nanoparticles(Au NPs)) and a 785 nm laser. Herein, we introduced three main particle component types(sulfate-nitrate-ammonium(SNA), organic material, and soot) with a total of 39 chemical substances. We scanned the solid Raman, liquid Raman, and SERS spectra of these substances and constructed a fine-particle reference library containing 105 spectra. Spectral results indicated that for soot and SNA, the differences in characteristic peaks mainly originated from the solid-liquid phase transition;Ag foil had little effect on this difference, while the Au NPs caused a significant red shift in the peak positions of polycyclic aromatic hydrocarbons. Moreover, with various characteristic peak positions in the three types of spectra, we could quickly and correctly distinguish substances. We hope that this spectral library will aid in the future identification of fine particles.

关键词： Raman Surface-enhanced Raman scattering(SERS) Spectral library Fine-particle

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Effect of Post Curing on the Properties of Epoxy Resin for Insulation Encapsulation 19th

Effect of Post Curing on the Properties of Epoxy Resin for I...

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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Ru, Jiasheng Yao, Cheng Gao, Tenglong Xie, Yu Li, Xudong Li, Yuefang Institute of Electronic Engineering China Academy of Engineering Physics Mianyang621900 China State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing University Chongqing400044 China

ISBN: (纸本)9789819647996

Epoxy resin is widely used in the packaging insulation for high-voltage electrical equipment and integrated electronic devices. Its post curing effect during long-term storage may affect the material performance and storage reliability of epoxy packaging products. In this work, the curing temperature of epoxy resin was further enhanced based on the conventional curing process, which is used to simulate the post curing reaction during storage, and its effect on the properties was studied. The results show that, the post curing does not significantly change the molecular structure of epoxy resin, but has a modest effect on the thermal, mechanical and electrical properties, such as the enhancement of glass transition temperature, the increase of storage modulus (in glassy state) and loss modulus, the slight decrease of relative permittivity and dielectric loss, and the improvement of pulsed breakdown field. This work could support the storage reliability assessment of epoxy packaging products. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： Labels

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Double Side Interfacial Optimization for Low-Temperature Stable CsPbI_(2)Br Perovskite Solar Cells with High Efficiency Beyond 16%

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Energy & Environmental Materials 2022年第2期5卷 637-644页

作者： Jing Ma Jie Su Zhenhua Lin Jian He Long Zhou Tao Li Jincheng Zhang Shengzhong Liu Jingjing Chang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian UniversityXi’an 710071China Advanced Interdisciplinary Research Center for Flexible Electronics Xidian UniversityXi’an 710071China Centre for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China

CsPbI_(2)Br perovskite solar cells have achieved rapid development owing to their exceptional optoelectronic properties and relatively outstanding ***,open-circuit voltage(Voc)loss caused by band mismatch and charge recombination between perovskite and charge transporting layer is one of the crucial obstacles to further improve the device ***,we proposed a bilayer electron transport layer ZnO(bottom)/SnO_(2)(top)to reduce the Voc loss(Eloss)and promote device Voc by ZnO insert layer thickness modulation,which could improve the efficiency of charge carrier extraction/transfer and suppress the charge carrier *** addition,guanidinium iodide top surface treatment is used to further reduce the trap density,stabilize the perovskite film and align the energy levels,which promotes the fill factor,short-circuit current density(Jsc),and stability of the *** a result,the champion cell of double-side optimized CsPbI_(2)Br perovskite solar cells exhibits an extraordinary efficiency of 16.25%with the best Voc as high as 1.27 V and excellent thermal and storage stability.

关键词： CsPbI_(2)Br dual interfacial optimization high performance low temperature perovskite solar cells

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