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多特征提取的红外和可见光目标跟踪方法

兵工学报 2011年第4期32卷 445-451页

作者：赵高鹏薄煜明陈益南京理工大学自动化学院江苏南京210094

针对复杂背景下采用单一图像特征跟踪稳定性差的问题,提出了一种基于多个特征提取的红外和可见光图像目标跟踪方法。该方法提取红外图像的灰度特征和可见光图像的颜色、纹理特征,给出了采用核函数量化的直方图描述的多特征目标模型,结... 详细信息

针对复杂背景下采用单一图像特征跟踪稳定性差的问题,提出了一种基于多个特征提取的红外和可见光图像目标跟踪方法。该方法提取红外图像的灰度特征和可见光图像的颜色、纹理特征,给出了采用核函数量化的直方图描述的多特征目标模型,结合均值漂移跟踪框架,给出了一种根据相似性度量进行自适应融合定位目标的方法,并给出了一种选择性的目标模板模型更新方法。实验采用复杂地面环境下的多组图像序列,结果表明该方法的有效性,实现了复杂环境下的图像目标稳定跟踪。

关键词：信息处理技术目标跟踪多特征提取均值漂移

Graphene/MoS_(2-x)O_(x)/graphene photomemristor with tunable non-volatile responsivities for neuromorphic vision processing

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Light(Science & Applications) 2023年第2期12卷 284-293页

作者： Xiao Fu Tangxin Li Bin Cai Jinshui Miao Gennady NPanin Xinyu Ma jinjin Wang Xiaoyong Jiang Qing Li yi Dong Chunhui Hao Juyi Sun Hangyu Xu Qixiao Zhao Mengjia Xia bo Song Fansheng Chen Xiaoshuang Chen Wei Lu Weida Hu School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China University of Chinese Academy of Sciences 100049 BeijingChina Institute of Intelligent Machines HFiPSChinese Academy of SciencesHefei 230031China Jianghuai Frontier Technology Coordination and Innovation Center Hefei 230088China Institute of Microelectronics Technology and High-Purity Materials Russian Academy of SciencesChernogolovkaMoscow district142432Russia

Conventional artificial intelligence(Al)machine vision technology,based on the von Neumann architecture,uses separate sensing,computing,and storage units to process huge amounts of vision data generated in sensory *** frequent movement of redundant data between sensors,processors and memory,however,results in high-power consumption and latency.A more efficient approach is to offload some of the memory and computational tasks to sensor elements that can perceive and process the optical signal ***,we proposed a non-volatile photomemristor,in which the reconfigurable responsivity can be modulated by the charge and/or photon flux through it and further stored in the *** non-volatile photomemristor has a simple two-terminal architecture,in which photoexcited carriers and oxygen-related ions are coupled,leading to a displaced and pinched hysteresis in the current-voltage *** the frst time,non-volatile photomemristors implement computationally complete logic with photoresponse-stateful operations,for which the same photomemristor serves as both a logic gate and memory,using photoresponse as a physical state variable instead of light,voltage and *** polarity reversal of photomemristors shows great potential for in-memory sensing and computing with feature extraction and image recognition for neuromorphic vision.

关键词： tunable operations hysteresis

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烯烃催化裂解反应动力学的研究

计算机与应用化学 2009年第2期26卷 129-132页

作者：李博龙军侯栓弟中国石化石油化工科学研究院北京100083 中国石化齐鲁分公司山东淄博255411

根据脉冲微反条件下C_5～C_8烯烃裂解产物分布,建立烯烃裂解反应网络,通过参数估计方法确定反应网络动力学常数、反应活化能和指前因子。结果表明,随着碳数的增加,C_5～C_8烯烃单分子裂解反应速率加快。反应温度600℃时C_5～C_8正构烯... 详细信息

根据脉冲微反条件下C_5～C_8烯烃裂解产物分布,建立烯烃裂解反应网络,通过参数估计方法确定反应网络动力学常数、反应活化能和指前因子。结果表明,随着碳数的增加,C_5～C_8烯烃单分子裂解反应速率加快。反应温度600℃时C_5～C_8正构烯烃裂解生成丙烯,其反应速率常数的比值为1:8.18:38.48:27.98,最快生成丙烯的是1-庚烯。反应温度相同,1-烯烃的主要裂解反应速率是碳数相同的2-甲基-2-烯烃的1.1～1.6倍。C_5烯烃裂解为单、双分子裂化并存的反应体系,但双分子裂解反应速率远大于单分子裂解,双分子反应占优势。

关键词：烯烃催化裂解动力学

A novel adsorbent of three-dimensional ordered macro/mesoporous carbon for removal of malachite green dye

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Journal of Central South University 2020年第2期27卷 388-402页

作者： WAGN Jie hou Guang-ya WU Lian-kui CAO Hua-zhen ZHENG Guo-qu TANG yi-ping College of Materials Science and Engineering Zhejiang University of Technology

Three-dimensional ordered macro/mesoporous carbon(3DOM/m-C)with high specific surface area was synthesized by colloid crystal template method with chemical activation by KOH and used as the adsorbent for removing malachite green(MG)in aqueous *** microstructures of the adsorbents were characterized by FESEM,TEM and BET,and the effects of initial dye concentration,contact time,solution pH,and temperature on adsorption performance were *** results show that the 3DOM/m-C exhibits extremely high adsorption capacity of 3541.1 mg/g within 2 h,which could be attributed to the novel ordered hierarchical structure with mesopores on three-dimensional ordered macroporous carbon *** the adsorption behavior conforms to the pseudo-second-order kinetic and Langmuir adsorption isotherm.3DOM/m-C can be recycled after being desorbed by absolute ethanol,and still maintains a high capacity of 2762.06 mg/g after 5 cycles.

关键词： malachite green adsorption three-dimensional ordered macroporous mesoporous thermodynamics kinetics desorption

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卧式加工中心空间误差预测与验证

机械设计与制造 2022年第6期376卷 118-122页

作者：王调品侯益波何兵成都工业职业技术学院装备制造学院四川成都610218 成都优拓优联万江科技有限公司四川成都610218

由机床几何误差复合而成的空间误差是影响加工精度的主要因素。以提高数控机床加工精度为研究目的,提出了一种基于旋量理论的机床空间误差预测及其验证技术。首先,借助旋量指数积建立了机器人末端实际位形旋量指数积数学模型,通过分析... 详细信息

由机床几何误差复合而成的空间误差是影响加工精度的主要因素。以提高数控机床加工精度为研究目的,提出了一种基于旋量理论的机床空间误差预测及其验证技术。首先,借助旋量指数积建立了机器人末端实际位形旋量指数积数学模型,通过分析了机床21项几何误差并结合运动链拓扑搭建了机床完备模型;进而,以传统辨识方法识别了21项几何误差,输出机床空间误差预测结果;最后,开展了基于ISO230-6的体对角线实验值与模型预测值对比验证实验。实验结果表明四条体对角线实验测量值与模型预测值符合程度较高,有效验证了基于旋量理论的卧式加工中心空间误差预测分析方法正确性及合理性。

关键词：旋量指数积机器人手臂完备建模误差辨识体对角线

Rose without prickle: genomic insights linked to moisture adaptation

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National Science Review 2021年第12期8卷 74-85页

作者： Mi-Cai Zhong Xiao-Dong Jiang Guo-Qian Yang Wei-Hua Cui Zhi-Quan Suo Wei-Jia Wang yi-bo Sun Dan Wang Xin-Chao Cheng Xu-Ming Li Xue Dong Kai-Xue Tang De-Zhu Li Jin-Yong Hu CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of Sciences University of Chinese Academy of Sciences Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of Sciences Flower Research Institute Yunnan Agricultural Academy of Sciences Biomarker Technologies Corporation

Prickles act against herbivores, pathogens or mechanical injury, while also preventing water loss. However,whether prickles have new function and the molecular genetics of prickle patterning remain poorly explored. Here, we generated a high-quality reference genome assembly for ‘Basye’s Thornless’(BT), a prickle-free cultivar of Rosa wichuraiana, to identify genetic elements related to stem prickle *** BT genome harbors a high level of sequence diversity in itself and with cultivar ‘Old Blush’(R. chinensis), a founder genotype in rose domestication. Inheritance of stem prickle density was determined and two QTL were identified. Differentially expressed genes in QTL were involved in water-related functions, suggesting that prickle density may hitchhike with adaptations to moist environments. While the prickle-related gene-regulatory-network(GRN) was highly conserved, the expression variation of key candidate genes was associated with prickle density. Our study provides fundamental resources and insights for genome evolution in the Rosaceae. Ongoing efforts on identification of the molecular bases for key rose traits may lead to improvements for horticultural markets.

关键词： Rosa wichuraiana ‘Basye's Thornless’ prickle-free water storage gene-regulatory-network (GRN) QTL

Safety and efficacy of cobalt chromium alloy based sirolimus-eluting stent with bioabsorbable polymer in porcine model

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Chinese Medical Journal 2012年第6期125卷 983-989页

作者： WU yi-zhe SHEN Li WANG Qi-bing HU Xi XIE Jian QIAN Ju-ying GE Jun-bo Department of Cardiology Shanghai Institute of Cardiovascular Diseases Zhongshan Hospital Fudan University Shanghai 200032 China Shandong Huaan Biotechnology Co. Ltd. Laiwu Shandong 271113 China

Background First generation drug-eluting stents （DESs） were based on 316L stainless steel and coated with a permanent polymer. The vessel wall of these DESs was inflammatory and late in-stent thrombosis was reported. Hence, cobalt chromium based DES coated with a bioabsorbable polymer was an alternate choice. Methods Cobalt chromium based DES with bioabsorbable polymer （Simrex stent） as well as control stents （Polymer stent and EXCELTM stent） were implanted into porcine arteries. At a designated time, angiography, quantitative coronary angiography （QCA） analysis, histomorphometry, and electron-microscopical follow-up were performed. Results A total of 98 stents of all the three groups were harvested. At week 24, percent diameter stenosis （%DS）, late loss （LL）, and percent area stenosis （%AS） of Simrex was （12.9±0.4）%, （0.35±0.02） mm, and （24.5±4.2）%, respectively, without significant difference in comparison to commercialized EXCELTM stent. Slight inflammatory reaction was seen around the stent strut of Simrex, just as in the other two groups. Electron-microscopical follow-up suggested that it might take 4-12 weeks for Simrex to complete its re-endothelialization process. Conclusions Cobalt chromium based, bioabsorbable polymer coated sirolimus-eluting stent showed excellent biocompatibility. During 24 weeks observation in porcine model, it was proved that this novel DES system successfully inhibited neointima hyperplasia and decreased in-stent stenosis. It is feasible to launch a clinical evaluation to improve the current prognosis of DES implantation.

关键词： coronary artery disease drug-eluting stent bioabsorbable polymer cobalt chromium alloy in-stent restenosis

20世纪以前的南洋华侨在中外饮食文化交流中的作用

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东南亚研究 2006年第1期 55-58页

作者：陈伟明侯波暨南大学历史系广州510630

本文主要探讨了20世纪前南洋华侨在中国与东南亚地区之间的食料、食品以及饮食习俗等文化交流中的作用。一方面,华侨通过在南洋地区的生产活动,把中国的传统饮食传播到南洋地区;另一方面,华侨把大量南洋饮食物品传人中国。在中国与南洋... 详细信息

本文主要探讨了20世纪前南洋华侨在中国与东南亚地区之间的食料、食品以及饮食习俗等文化交流中的作用。一方面,华侨通过在南洋地区的生产活动,把中国的传统饮食传播到南洋地区;另一方面,华侨把大量南洋饮食物品传人中国。在中国与南洋地区的饮食文化交流中,南洋华侨发挥了巨大的作用,成为饮食文化交流的重要桥梁。

关键词：南洋华侨饮食文化交流

Clinicopathological characterization of ten patients with primary malignant melanoma of the esophagus and literature review

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World Journal of Gastrointestinal Oncology 2022年第9期14卷 1739-1757页

作者： Sheng-Li Zhou Lian-Qun Zhang Xue-Ke Zhao Yue Wu Qiu-Yu Liu bo Li Jian-Jun Wang Rui-Jiao Zhao Xi-Juan Wang yi Chen Li-Dong Wang Ling-Fei Kong Department of Pathology Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhou 450003Henan ProvinceChina Department of Gastroenterology Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhou 450003Henan ProvinceChina State Key Laboratory of Esophageal Cancer Prevention and Treatment Henan Key Laboratory for Esophageal Cancer ResearchThe First Affiliated HospitalZhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Radiology Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhou 450003Henan ProvinceChina Department of Thoracic Surgery Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhou 450003Henan ProvinceChina Department of Pediatrics Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhou 450003Henan ProvinceChina Clinical Research Service Center Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhou 450003Henan ProvinceChina

BACKGROUND Primary malignant melanoma of the esophagus(PMME) is a rare malignant disease and has not been well characterized in terms of clinicopathology and *** To investigate the clinical features and survival factors in Chinese patients with *** The clinicopathological findings of ten cases with PMME treated at Henan Provincial People’s Hospital were summarized. Moreover, the English-and Chinese-language literature that focused on Chinese patients with PMME from 1980 to September 2021 was reviewed and analyzed. Univariate and multivariate analyses were employed to investigate the clinicopathologic factors that might be associated with *** A total of 290 Chinese patients with PMME, including ten from our hospital and 280 from the literature were enrolled in the present study. Only about half of the patients(55.8%) were accurately diagnosed before surgery. Additionally, 91.1% of the patients received esophagectomy, and 88 patients(36.5%) received adjuvant therapy after surgery. The frequency of lymph node metastasis(LNM) was 51.2%(107/209), and LNM had a positive rate of 45.3% even when the tumor was confined to the submucosal layer. The risk of LNM increased significantly with the p T stage [P both the p T stage [P = 0.005, hazard ratio(HR): 1.70, 95%CI: 1.17-2.47] and LNM(P = 0.009, HR: 1.78, 95%CI: 1.15-2.74) were independent prognostic factors for OS. The median disease-free survival(DFS) was 5.3 mo(range: 0.8-114.1 mo). The multivariate analysis indicated that only the advanced p T stage(P = 0.02, HR: 1.93, 95%CI: 1.09-3.42) was a significant independent indicator of poor RFS in patients with *** The correct diagnosis of PMME before surgery is low, and physicians should pay more attention t

关键词： Primary malignant melanoma of the esophagus Clinicopathological characteristics Treatment Recurrence Survival