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Adaptive Sampling for Near Space Hypersonic Gliding Target Tracking

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Journal of Beijing Institute of Technology 2022年第6期31卷 584-594页

作者： Guanhua ding Jinping Sun Ying Chen juan Yu School of Electronics and Information Engineering Beihang UniversityBeijing 100191China Beijing Institute of Radio Measurement Beijing 100854China

For modern phased array radar systems,the adaptive control of the target revisiting time is important for efficient radar resource allocation,especially in maneuvering target tracking applications.This paper presents a novel interactive multiple model(IMM)algorithm optimized for tracking maneuvering near space hypersonic gliding vehicles(NSHGV)with a fast adaptive sam-pling control logic.The algorithm utilizes the model probabilities to dynamically adjust the revisit time corresponding to NSHGV maneuvers,thus achieving a balance between tracking accuracy and resource consumption.Simulation results on typical NSHGV targets show that the proposed algo-rithm improves tracking accuracy and resource allocation efficiency compared to other conventional multiple model algorithms.

关键词： near space hypersonic gliding vehicle(NSHGV) target tracking adaptive sampling interactive multiple model(IMM)

N-methyl-D-aspartate receptor subunit 1 regulates neurogenesis in the hippocampal dentate gyrus of schizophrenia-like mice

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Neural Regeneration Research 2019年第12期14卷 2112-2117页

作者： Juan Ding Chun Zhang Yi-Wei Zhang Quan-Rui Ma Yin-Ming Liu Tao Sun juan Liu Ningxia Key Laboratory of Cerebrocranial Diseases Institute of Basic Medical Sciences School of Basic Medical Sciences Ningxia Medical University

N-methyl-D-aspartate receptor hypofunction is the basis of pathophysiology in schizophrenia. Blocking the N-methyl-D-aspartate receptor impairs learning and memory abilities and induces pathological changes in the brain. Previous studies have paid little attention to the role of the N-methyl-D-aspartate receptor subunit 1 (NR1) in neurogenesis in the hippocampus of schizophrenia. A mouse model of schizophrenia was established by intraperitoneal injection of 0.6 mg/kg MK-801, once a day, for 14 days. In N-methyl-D-aspartate-treated mice, N-methyl-D-aspartate was administered by intracerebroventricular injection in schizophrenia mice on day 15. The number of NR1-, Ki67- or BrdU-immunoreactive cells in the dentate gyrus was measured by immunofluorescence staining. Our data showed the number of NR1-immunoreactive cells increased along with the decreasing numbers of BrdU- and Ki67-immunoreactive cells in the schizophrenia groups compared with the control group. N-methyl-D-aspartate could reverse the above changes. These results indicated that NR1 can regulate neurogenesis in the hippocampal dentate gyrus of schizophrenia mice, supporting NR1 as a promising therapeutic target in the treatment of schizophrenia. This study was approved by the Experimental Animal Ethics Committee of the Ningxia Medical University, China (approval No. 2014-014) on March 6, 2014.

关键词： nerve regeneration schizophrenia MK-801 N-methyl-D-aspartate neurogenesis N-methyl-D-aspartate receptor N-methyl-Daspartate receptor subunit 1 BrdU Ki67 hippocampal dentate gyrus hippocampal neurogenesis neural regeneration

Global Trends in Dam Removal and Related Research: A Systematic Review Based on Associated Datasets and Bibliometric Analysis

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Chinese Geographical Science 2019年第1期29卷 1-12页

作者： ding Liuyong CHEN Liqiang ding Chengzhi TAO juan Yunnan Key Laboratory of International Rivers and Transboundary Eco-security Yunnan University Institute of International Rivers and Eco-security Yunnan University

Dam removal has been increasingly reported globally and is becoming an important approach for river management, restoration and environmental conservation in damming rivers. However, current limited knowledge of global trends in dam removal and related research may be potentially biased in terms of the geographic distribution and organisms studied. Such bias could mislead dam removal planning and management in different areas and ecological conservation for different taxa. In this study, we quantitatively and qualitatively analyzed datasets of dam removal and publications of dam removal research using bibliometric methods. A total of 1449 dam removal documents were published from 1953 to 2016. Trends, current hotspots and future directions of dam removal research were identified. The results from this study reveal that dam removal largely occurred in the North America and Europe, and most of the removed dams were small and old dams. With respect to the topic analysis, more dam removal studies should focus on the responses of a wide range of organisms, not only fish, as well as the interspecies relationships, food webs and ecosystem structures and functions. Based on our findings, we also provide some suggestions for future dam removal planning and analysis.

关键词： dam demolition literature research topics weir

Clinical significance of Koebner's phenomenon in vitiligo:a hospital-based epidemiological investigation from China

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Chinese Medical Journal 2023年第4期136卷 502-504页

作者： Yankun Zhang Xiaolan ding Fang Wang Man Li juan Du Department of Dermatology Peking University People’s HospitalBeijing 100044China

To the Editor:Vitiligo is an asymptomatic but cosmetically disfiguring disorder that results in depigmented patches in the skin.The prevalence of vitiligo was 0.56%in China according to our study in 2008.[1]Based on clinical features,vitiligo can be classified into four subtypes:segmental(SV),non-segmental(NSV),mixed,and unclassified vitiligo.It also can be divided into active and stable phases according to the disease activity.[2]Koebner’s phenomenon(KP),also known as the isomorphic response,had been defined as the development of new lesions of a dermatosis over the sites of mechanical trauma.Unlike other disease(such as psoriasis),KP in vitiligo is related to daily activities,especially to chronic friction.The Vitiligo European Task Force(VETF)has recently updated the definition and classification of KP for vitiligo.[3]

关键词： clinical Clinical Vit

基于两种识别方法的AMSR-E资料无线电频率干扰信号的交叉验证（英文）

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Atmospheric and Oceanic Science Letters 2018年第3期11卷 255-261页

作者： ZHAO juan YU Xiao-ding China Meteorological Administration Training Centre BeijingChina

卫星微波低频通道的亮温资料广泛存在无线电频率干扰信号,在微波观测应用于反演地球物理参数和资料同化之前,应准确识别出受到频率干扰污染的资料。常用的干扰识别方法包括谱差法、平均值和标准差法以及主分量分析法等,但没有可靠的频... 详细信息

卫星微波低频通道的亮温资料广泛存在无线电频率干扰信号,在微波观测应用于反演地球物理参数和资料同化之前,应准确识别出受到频率干扰污染的资料。常用的干扰识别方法包括谱差法、平均值和标准差法以及主分量分析法等,但没有可靠的频率干扰源分布数据集用于评估不同识别方法的准确性。本文提出利用两种独立的干扰识别方法进行交叉验证,获得AMSR-E资料中频率干扰信号的识别阈值。结果表明,该方案能有效识别出AMSR-E资料C波段和X波段通道在陆地上的无线电频率干扰信号。AMSR-E C波段资料在美国人口密集的大城市有较强的干扰信号存在,X波段的干扰信号主要分布在欧洲大陆和日本。

关键词：无线电频率干扰阈值 AMSR-E

Visual inspection of aircraft skin:Automated pixel-level defect detection by instance segmentation

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Chinese Journal of Aeronautics 2022年第10期35卷 254-264页

作者： Meng ding Boer WU juan XU Abdul Nasser KASULE Hongfu ZUO College of Civil Aviation Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Civil Aircraft Health Monitoring and Intelligent Maintenance of CAAC Nanjing 210016China

Skin defect inspection is one of the most significant tasks in the conventional process of aircraft inspection.This paper proposes a vision-based method of pixel-level defect detection,which is based on the Mask Scoring R-CNN.First,an attention mechanism and a feature fusion module are introduced,to improve feature representation.Second,a new classifier head—consisting of four convolutional layers and a fully connected layer—is proposed,to reduce the influence of information around the area of the defect.Third,to evaluate the proposed method,a dataset of aircraft skin defects was constructed,containing 276 images with a resolution of 960×720 pixels.Experimental results show that the proposed classifier head improves the detection and segmentation accuracy,for aircraft skin defect inspection,more effectively than the attention mechanism and feature fusion module.Compared with the Mask R-CNN and Mask Scoring R-CNN,the proposed method increased the segmentation precision by approximately 21%and 19.59%,respectively.These results demonstrate that the proposed method performs favorably against the other two methods of pixellevel aircraft skin defect detection.

关键词： Aircraft skin Automatic non-destructive testing Defect inspection Instance segmentation Machine vision

IL-17 signaling in skin repair: safeguarding metabolic adaptation of wound epithelial cells

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Signal Transduction and Targeted Therapy 2022年第11期7卷 3982-3984页

作者： juan Wang Xiaolei ding Institute of Geriatrics Affiliated Nantong Hospital of Shanghai University(The Sixth People’s Hospital of Nantong)School of MedicineShanghai University226011NantongChina Shanghai Engineering Research Center of Organ Repair School of MedicineShanghai University200444ShanghaiChina

In a recent paper published in Science,Konieczny et al.describe that IL-17A produced by RORγt+γδT cells governs wound epithelial cell hypoxic adaptation,which is required for cell migratory activity and efficient r... 详细信息

关键词： wound RORγt al.

Targeted nanostrategies eliminate pre-metastatic niche of cancer

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Nano Research 2024年第6期17卷 5358-5373页

作者： juan Wang Ning Zhang Xiuping ding Chengrui Fu Xiaodong Li Baosheng Li Jianxun ding Tianmeng Sun Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education Institute of ImmunologyThe First HospitalJilin University1 Xinmin StreetChangchun 130061China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun 130022China Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical Sciences440 Jiyan RoadJinan 250117China Department of orthopaedics The Second Hospital of Shandong UniversityShandong University247 Beiyuan StreetJinan 250033China State Key Laboratory of Molecular Engineering of Polymers Fudan University220 Handan RoadShanghai 200433China

Establishing a pre-metastatic niche(PMN)in secondary organs is a prerequisite for cancer metastases.Despite advances in cancer therapy,the efficient inhibition of PMN formation remains a clinical challenge.Recent advances in understanding the specific characteristics of PMN and advances in nanotechnology have provided hope for manipulating their microenvironments.A series of nanostrategies have been designed to eliminate the PMN,including the removal of pro-metastatic exosomes from the bloodstream for excretion via the intestines,the targeting and scavenging of myeloid-derived suppressor cells,fibroblasts,and critical extracellular matrix components,and the elimination of circulating tumor cells prior to colonization in distant organs.This review summarizes the underlying mechanisms of PMN formation,highlights the anti-PMN efficacy of currently reported nanostrategies,and underlines the unresolved questions.

关键词： nanoparticle controlled drug delivery pre-metastatic niche elimination metastasis suppression cancer therapy

Enhancing mechanisms of N-doped biomass carbon on the vanadium-based catalyst for furan degradation at low temperature

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Waste Disposal and Sustainable Energy 2024年第1期6卷 1-9页

作者： Ling Wang Minghui Tang Hongxian Li Jiamin ding juan Qiu Shengyong Lu State Key Laboratory of Clean Energy Utilization Zhejiang University38#Zheda RoadHangzhou310027China Taizhou Institute of Zhejiang University Taizhou318012China Qingshanhu Energy Research Center Zhejiang University1699 Dayuan RoadQingshanhu Science and Technology CityHangzhou311300China

Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs)have attracted widespread concern due to their high toxicity,and their difficult manipulation in laboratories has made the research process tough.Thus,in our work,furan is selected as the model compound owing to the same structure of a central oxygenate ring.Although catalytic oxidation is regarded as an effective and applicable method for the abatement of PCDD/Fs,the synthesis of low-temperature catalysts is still a challenging problem in practical applications.Considering this situation,we prepared a novel V_(2)O_(5)/TiO_(2)catalyst modified with N-doped hierarchical porous carbon(NHPC)via a wet impregnation method.The V/T-1%NHPC catalyst could achieve expectant low-temperature performances with 50%furan conversion at 150℃and a complete conversion at 200℃,which decreased 23℃and 40℃compared to the V/T catalyst respectively.Moreover,the addition of NHPC presented lifting chemical stability during long-time test.The addition of NHPC in V/T catalysts decreased the formation of crystalline V_(2)O_(5) and increased the percentages of V^(5+)and O_(lat),which improved the utilization of vanadium ions and the catalytic activity.Simultaneously,the higher binding energy shift of O_(lat) implied more reaction possibility with other oxidise reactants.Importantly,this work proved the lifting catalytic activity by the interaction between catalysts and NHPC,and proposed the promoting effects of the N element.The results showed that the content of the pyridinic N and graphitic N in NHPC changed after combining with V/T catalyst,which played crucial roles in the excellent catalytic performance.Overall,this work provides comprehensive research of the V/T-1%NHPC catalyst toward furan oxidation at low temperature and explain the effects of N-doped biomass carbon in catalytic activity clearly,which gave a new thought to design low-temperature catalysts in PCDD/Fs degradation.Besides,the internal functional mechanisms of N species are worth further exploratio

关键词： Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans Furan Low-temperature catalyst V_(2)O_(5)/TiO_(2)catalyst N-doped