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3rd International Conference on Artificial Intelligence, Automation, and High-Performance Computing, AIAHPC 2023

作者： Cui, Shaohua Tang, Yutong Qi, Zhihao Xue, Yongjie School of Transportation Science and Engineering BDBC Beihang University Beijing100191 China College of Animal Science and Technology China Agricultural University Beijing100089 China State Key Laboratory of Analysis for Industrial Equipment School of Automotive Engineering Dalian University of Technology Dalian116024 China

ISBN: (数字)9781510666580

ISBN: (纸本)9781510666573

Through the backstepping technique, this paper designs an observer-based event-triggered adaptive trajectory tracking control algorithm for the autonomous vehicle (AV) platoons with motion uncertainties (e.g., unknown AV mass, air resistance, and variable conversion errors). In order to avoid the transmission of excessive multi-vehicle status information (i.e., speed, acceleration, headway, position, expected trajectory, and so on) between AVs, this adaptive platoon control algorithm proposed only uses the imprecise sampled AV positions. The event-triggered mechanism with a fixed event-triggered threshold is introduced to reduce the update frequency of AV control laws. Through the newly constructed Lyapunov function, the adaptive platoon control algorithm designed could realize the simultaneous tracking of expected position and speed trajectories, and there exists an update time interval limit of AV control laws not less than the sampling time interval of AV positions. Through numerical simulation, the adaptive platoon control algorithm designed could control the heterogeneous AV platoon in linear formation where AV speed and positions are observed precisely, and all heterogeneous AVs in the platoon track the expected position and speed trajectories simultaneously. In addition, the update time interval of AV control laws is longer than the sampling time interval of AV positions. © 2023 SPIE.

关键词： Backstepping

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Deep Anomaly Detection for Generalized Face Forgery Detection

SSRN

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SSRN 2024年

作者： Zhang, Fan Yang, Ting Cao, Lin Du, Kangning Guo, Yanan Song, Peiran Shao, Chen Beijing100101 China Key Laboratory of Optoelectronic Testing Technology and Instruments Ministry of Education Beijing Information Science and Technology University Beijing100101 China

Nowadays, the face forgery causes great threat to societal security, hence it is of paramount importance to develop effective countermeasures against it. Though most existing methods adopt neural networks to automatically extract discriminative features for forgery detection and have achieved good results, there are still unignorable problems. Namely, when detecting forgery faces generated by unknown forgery methods, the detection performance de- creases seriously, which means the generalization capability is poor. To com- pensate for such limitations, a novel deep anomaly detection for generalized face forgery detection (DAGFD) is proposed in this paper. Specifically, the artifact map generator optimized by triplet focal loss and metric-softmax loss is first used to locate the fake regions and amplify the semantic features of the forgery videos. Next, forgery detection is reformulated from the anomaly de- tection perspective, and the artifact map score is calculated to detect forgery videos. Furthermore, mean square error (MSE) loss is used to minimize the artifact map score of real samples while increase the one of forgery samples to generalize well to unseen forgery methods. Also, circle loss is used for auxiliary classifier to learn more discriminative artifact features. Finally, the experimental results show that the proposed method’s detection accuracy is better than other state-of-the-art methods. © 2024, The Authors. All rights reserved.

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In-situ constructed Ru-rich porous framework on NiFe-based ribbon for enhanced oxygen evolution reaction in alkaline solution

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Journal of Materials science & technology 2021年第11期70卷 197-204页

作者： Guoguo Xi Lei Zuo Xuan Li Yu Jin Ran Li Tao Zhang Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing100191China School of Aerospace Engineering Beijing Institute of TechnologyBeijing100081China Beijing Spacecrafts China Academy of Space TechnologyBeijing100094China Center for Advanced Analysis and Computational Science Zhengzhou UniversityZhengzhou450001China

Exploiting economical and high-efficient electrocatalysts of oxygen evolution reaction(OER)remains urgent in the field of sustainable hydrogen generation by water ***-and Ir-based materials are benchmark electrocatalysts towards the OER,yet the precious metals are expensive and ***,we develop a kind of Ru-doped NiFe-based catalyst with three-dimensional nanoporous surface(NP-Ru_(x)),which fulfils both performance and cost requirements for the OER *** novel material can directly work as a support-free electrode and exhibits excellent OER performance with an ultralow overpotential of 245 mV at 10 mA cm^(-2) and a small Tafel slope of 15 mV dec^(-1) as well as low charge transfer *** superior performance could be rationalized as follows:(1)Generated Ru-rich nanoporous architecture can not only supply a large number of active sites but also facilitate mass transfer at the electrode/electrolyte interface;(2)Multiple metals(hydro)oxides generated on the surface have the synergistic catalytic effect for the OER;(3)The in-situ generation of(hydro)oxides and the firm bonding of nanoporous layer and the substrate allow for easy electron *** features make NP-Ruxa promising oxygen-evolving electrode material toward water electrolysis.

关键词： Ru Nanoporous High conductivity Electrocatalyst Oxygen evolution reaction

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Current research status of tumor cell biomarker detection

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Microsystems & Nanoengineering 2023年第5期9卷 17-34页

作者： Liying Jiang Xinyi Lin Fenghua Chen Xiaoyun Qin Yanxia Yan Linjiao Ren Hongyu Yu Lingqian Chang ang Wang School of Electrical and Information Engineering Zhengzhou University of Light IndustryZhengzhou 450002China Academy for Quantum Science and Technology Zhengzhou University of Light IndustryZhengzhou 450002China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina key Laboratory of Biomechanics and Mechanobiology(Beihang University) Ministry of EducationBeijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing 100083China School of Engineering Medicine Beihang UniversityBeijing 100083China

With the annual increases in the morbidity and mortality rates of tumors,the use of biomarkers for early diagnosis and real-time monitoring of tumor cells is of great *** used for tumor cell detection in body fluids include circulating tumor cells,nucleic acids,protein markers,and extracellular *** them,circulating tumor cells,circulating tumor DNA,and exosomes have high potential for the prediction,diagnosis,and prognosis of tumor diseases due to the large amount of valuable information on tumor characteristics and evolution;in addition,in situ monitoring of telomerase and miRNA in living cells has been the topic of extensive research to understand tumor development in real *** techniques,such as enzyme-linked immunosorbent assays,immunoblotting,and mass spectrometry,have been widely used for the detection of these *** them,the detection of tumor cell markers in body fluids based on electrochemical biosensors and fluorescence signal analysis is highly preferred because of its high sensitivity,rapid detection and portable ***,we summarize recent research progress in the detection of tumor cell biomarkers in body fluids using electrochemical and fluorescence biosensors,outline the current research status of in situ fluorescence monitoring and the analysis of tumor markers in living cells,and discuss the technical challenges for their practical clinical application to provide a reference for the development of new tumor marker detection methods.

关键词： diagnosis mortality diseases

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Time-series variation and attribution analysis of downward shortwave radiation over the Yunnan-Kweichow plateau from 1984 to 2018

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International Journal of Digital Earth 2023年第1期16卷 337-354页

作者： Lijia Cheng Bo-Hui Tang Zhiwei He Zhitao Fu Menghua Li Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunmingPeople’s Republic of China State Key Laboratory of Resources and Environment Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingPeople’s Republic of China

The downward shortwave radiation(DSR)is a key input parameter for land surface models and climate *** on the daily averaged Global Land Surface Satellite downward shortwave radiation(GLASS-DSR)dataset over the Yunnan-Kweichow Plateau(YKP)from 1984 to 2018,this paper analyzes variation trend and breakpoints of *** results show that:annual averaged DSR decreases at a decreasing rate of-1.84 W·m^(-2)·decade^(-1) over the YKP from 1984 to 2018;the overall distribution of interannual averaged DSR shows higher in the mid-west,and gradually decreasing from west to northeast over the YKP;the estimated averaged DSR is larger in spring than in summer due to the influence of the monsoon;monthly averaged DSR reaches its maximum in May and its minimum in December;breakpoints are found in the seasonal and trend components of daily averaged *** driving factors are examined for their effects on DSR variation,including annual average temperature,precipitation,10 m wind speed,aerosol optical thickness(AOT),total cloud cover,elevation,slope,aspect,longitude,latitude,and climate *** to thefindings,AOT predominates in the spatio-temporal distribution of DSR over the *** study will contribute to studies related to climate change and highland radiation.

关键词： Yunnan-Kweichow plateau downward shortwave radiation time-series analysis breakpoints detection attribution analysis

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Bias analysis in the Simulation of the Western North Pacific Tropical Cyclone Characteristics by Two High-Resolution Global Atmospheric Models

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Advances in Atmospheric sciences 2023年第4期40卷 634-652页

作者： Qiyang LIU Fengxue QIAO Yongqiang YU Yiting ZHU Shuwen ZHAO Yujia LIU Fulin JIANG Xinyu HU Key Laboratory of Geographic Information Science Ministry of EducationEast China Normal UniversityShanghai 200241China School of Geographic Sciences East China Normal UniversityShanghai 200241China Climate Environment and Sustainability CenterSchool of Atmospheric ScienceNanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China Department of Atmospheric and Ocean Sciences Institute of Atmospheric SciencesFudan UniversityShanghai 200438China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081China

This study compares the atmosphere-only HighResMIP simulations from FGOALS-f3-H(FGOALS)and MRIAGCM3-2-S(MRI)with respect to tropical cyclone(TC)characteristics over the Western North Pacific(WNP)for the July-October months of *** focus is on investigating the role of the tropical easterly jet over the Western Pacific(WP_TEJ)in modulating the simulation biases in terms of their climatological distribution and interannual variability of WNP TC genesis frequency(TCGF)based on the analysis of the genesis potential index(GPI).Results show that the two models reasonably capture the main TC genesis location,the maximum center of frequency,and track density;however,their biases mainly lie in simulating the intense TCs and TCGF *** MRI better simulates the windpressure relationship(WPR)but overestimates the proportion of super typhoons(SSTYs).At the same time,FGOALS underestimates the WPR and the proportion of SSTYs but better simulates the total WNP TC *** particular,FGOALS overestimates the TCGF in the northeastern WNP,which is strongly tied to an overestimated WP_TEJ and the enhanced vertical circulation to the north of its entrance *** contrast,the MRI simulates a weaker WP_TEJ and vertical circulation,leading to a negative TCGF bias in most of the *** models exhibit comparable capability in simulating the interannual variability of WP_TEJ intensity,but the composite difference of large-scale atmospheric factors between strong and weak WP_TEJ years is overestimated,resulting in larger interannual anomalies of WNP TCGF,especially for ***,accurate simulations of the WP_TEJ and the associated oceanic and atmospheric factors are crucial to further improving WNP TC simulations for both models.

关键词： tropical cyclone genesis HighResMIP tropical easterly jet

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Research on the calibration algorithm of magnetic resonance probe performance testing system 8

Research on the calibration algorithm of magnetic resonance ...

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8th International Symposium on Advances in Electrical, Electronics, and Computer Engineering, ISAEECE 2023

作者： Liu, Jiaqi Chen, Junfei Bao, Qingjia Liu, Chaoyang Liu, Kewen School of Information Engineering Wuhan University of Technology Wuhan China Key Laboratory of Magnetic Resonance in Biological Systems Innovation Academy for Precision Measurement Science and Technology Wuhan430071 China University of Chinese Academy of Sciences Beijing100049 China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology-Optics Valley Laboratory Hubei430074 China

ISBN: (纸本)9781510666290

In order to replace the complicated operation of the traditional vector network analyzer, the portable magnetic resonance probe performance detection system has become a research hotspot. However, its measurement accuracy has not been high. This research aims to improve the traditional calibration algorithm. While eliminating the directional error, source matching error and reverse tracking error in the traditional single-port network model. The deviation of measurement results caused by the lack of standard calibration parts is eliminated. Compared with the existing algorithms, the accuracy of experimental results are significantly improved. © 2023 SPIE. All rights reserved.

关键词： Errors

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Altered synaptic currents,mitophagy,mitochondrial dynamics in Alzheimer's disease models and therapeutic potential of Dengzhan Shengmai capsules intervention

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Journal of Pharmaceutical analysis 2024年第3期14卷 348-370页

作者： Binbin Zhao Dongfeng Wei Qinghua Long Qingjie Chen Fushun Wang Linlin Chen Zefei Li Tong Li Tao Ma Wei Liu Linshuang Wang Caishui Yang Xiaxia Zhang Ping Wang Zhanjun Zhang State Key Laboratory of Cognitive Neuroscience and Learning&IDG/McGovern Institute for Brain Research Beijing Normal UniversityBeijing100875China Institute of Gerontology Hubei University of Chinese MedicineWuhan430065China Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijing100700China Medical School Hubei Minzu UniversityEnshiHubei445000China HuBei University of Science and Technology XianningHubei437100China Institute of Brain and Psychological Science Sichuan Normal UniversityChengdu610066China Key Laboratory of Traditional Chinese Medicine Resource and Compound Prescription Ministry of EducationHubei University of Chinese MedicineWuhan430065China Dongfang Hospital Beijing University of Chinese MedicineBeijing100078China Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases Experimental Research CenterChina Academy of Chinese Medical SciencesBeijing100700China School of Systems Science Beijing Normal UniversityBeijing100875China BABRI Centre Beijing Normal UniversityBeijing100875China

Emerging research suggests a potential association of progression of Alzheimer's disease(AD)with alterations in synaptic currents and mitochondrial ***,the specific associations between these pathological changes remain *** this study,we utilized Aβ42-induced AD rats and primary neural cells as in vivo and in vitro *** investigations included behavioural tests,brain magnetic resonance imaging(MRI),liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)analysis,Nissl staining,thioflavin-S staining,enzyme-linked immunosorbent assay,Golgi-Cox staining,transmission electron microscopy(TEM),immunofluorescence staining,proteomics,adenosine triphosphate(ATP)detection,mitochondrial membrane potential(MMP)and reactive oxygen species(ROS)assessment,mitochondrial morphology analysis,electrophysiological studies,Western blotting,and molecular *** results revealed changes in synaptic currents,mitophagy,and mitochondrial dynamics in the AD ***,intervention with Dengzhan Shengmai(DZSM)capsules emerged as a pivotal element in this investigation.Aβ42-induced synaptic dysfunction was significantly mitigated by DZSM intervention,which notably amplified the frequency and amplitude of synaptic *** cognitive impairment observed in AD rats was ameliorated and accompanied by robust protection against structural damage in key brain regions,including the hippocampal CA3,primary cingular cortex,prelimbic system,and dysgranular insular *** intervention led to increased IDE levels,augmented long-term potential(LTP)amplitude,and enhanced dendritic spine density and ***,DZSM intervention led to favourable changes in mitochondrial parameters,including ROS expression,MMP and ATP contents,and mitochondrial *** conclusion,our findings delved into the realm of altered synaptic currents,mitophagy,and mitochondrial dynamics in AD,concurrently highlighting the therapeutic potential of DZSM intervention.

关键词： Alzheimer's disease Synaptic currents Mitophagy Mitochondrial fusion and fission Dengzhan Shengmai capsules

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Genome and GWAS analysis identified genes significantly related to phenotypic state of Rhododendron bark

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园艺研究（英文） 2024年第3期11卷 69-83页

作者： Qiannan Ye Lu Zhang Qing Li Yaliang Ji Yanli Zhou Zhenzhen Wu Yanting Hu Yongpeng Ma Jihua Wang Chengjun Zhang Germplasm Bank of Wild Species Yunnan Key Laboratory for Crop Wild Relatives OmicsKunming Institute of BotanyChinese Academy of ScienceKunmingYunnan 650201China University of Chinese Academy of Sciences Beijing 100049China Flower Research Institute of Yunnan Academy of Agricultural Sciences National Engineering Research Center for Ornamental HorticultureYunnan Academy of Agricultural Sciences Kunming 650000China State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211800China Germplasm Bank of Wild Species Yunnan Key Laboratory for Crop Wild Relatives OmicsKunming Institute of BotanyChinese Academy of ScienceKunmingYunnan 650201China Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Germplasm Bank of Wild Species Yunnan Key Laboratory for Crop Wild Relatives OmicsKunming Institute of BotanyChinese Academy of ScienceKunmingYunnan 650201China Haiyan Engineering & Technology Center Zhejiang Institute of Advanced TechnologyJiaxing 314022China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China

As an important horticultural plant,Rhododendron is often used in urban greening and landscape ***,factors such as the high rate of genetic recombination,frequent outcrossing in the wild,weak linkage disequilibrium,and the susceptibility of gene expression to environmental factors limit further exploration of functional genes related to important horticultural traits,and make the breeding of new varieties require a longer ***,we choose bark as the target trait which is not easily affected by environmental factors,but also has ornamental ***-wide association study(GWAS)of Rhododendron delavayi(30 samples),***(30 samples)and their F1 generation ***(200 samples)was conducted on the roughness of bark ***,we obtained 2416.31 Gbp of clean data and identified 5 328800 high-quality *** to the P-value and the degree of linkage disequilibrium of SNPs,we further identified 4 out of 11 candidate genes that affect bark *** results of gene differential expression analysis further indicated that the expression levels of Rhdel02G0243600 and Rhdel08G0220700 in different bark phenotypes were significantly *** study identified functional genes that influence important horticultural traits of Rhododendron,and illustrated the powerful utility and great potential of GWAS in understanding and exploiting wild germplasm genetic resources of Rhododendron.

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Research on Engineering Geological Zoning of Plateau Mountains Traffic Corridors 14th

Research on Engineering Geological Zoning of Plateau Mountai...

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14th International Association for Engineering Geology and the Environment, IAEG 2023

作者： Yang, Yue Zheng, Bowen Qi, Shengwen Yang, Guoxiang Xu, Anna Xu, Lulu Hao, Ruipeng Lu, Wei Liang, Ning Guo, Songfeng Song, Shuaihua Key Laboratory of Shale Gas and Geoengineering Institute of Geology and Geophysics Chinese Academy of Sciences Beijing100029 China College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing100029 China Beijing100083 China College of Earth Science and Engineering Shandong University of Science and Technology Shandong Qingdao266590 China

ISBN: (纸本)9789819990566

The geological conditions of the plateau mountainous traffic corridor project are complex, posing serious challenges to the construction of transportation corridors. To provide systematic engineering geological analysis information for the safe construction of transportation corridor projects in mountainous areas of the plateau, this paper adopts the engineering geological zoning method based on a geographic information system (GIS), selects 10 zoning indicators belonging to different engineering geological conditions, introduces Euclidean distance to establish a hierarchical analysis-entropy value method of subject-objective coupled zoning model, conducts regional engineering geological zoning, and obtains an engineering geological zoning map of the study area. The research results show that the influence indicator of the active fault plays a controlling role in the engineering geological conditions, followed by the terrain undulation and the development density of adverse geological phenomena. The research results can effectively serve the development of an engineering route optimization plan for the traffic corridor, and support the engineering route selection, engineering geological survey design and construction. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Zoning

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