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地铁弱电系统不间断电源整合分析

城市轨道交通研究 2011年第9期14卷 73-75页

作者：文波中铁二院工程集团有限责任公司成都工程师610031

通过对传统地铁弱电系统不间断电源配置的分析,提出地铁弱电系统不间断电源的整合方案。经与传统方案的技术经济比较,得出整合方案可以节约地铁有限的空间,减少投资,并便于维护。

关键词：地铁弱电系统不间断电源

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无锚双注意力孪生网络的视觉跟踪

控制与决策 2024年第2期39卷 633-640页

作者：郭文梁卜文丁昕苗山东工商学院计算机科学与技术学院山东烟台264005 山东工商学院信息与电子工程学院山东烟台264005

针对跟踪过程中因光照变化、快速运动及尺度变化等造成的角点定位精准度下降问题,受SiamCAR的跟踪框架启发提出一种无锚双注意力孪生网络的视觉跟踪算法.首先,算法的主干网络采用ResNet-50并结合增强多层融合特征图进行特征提取,充分利... 详细信息

针对跟踪过程中因光照变化、快速运动及尺度变化等造成的角点定位精准度下降问题,受SiamCAR的跟踪框架启发提出一种无锚双注意力孪生网络的视觉跟踪算法.首先,算法的主干网络采用ResNet-50并结合增强多层融合特征图进行特征提取,充分利用网络浅层特征的定位信息和深层次的语义信息,提高算法对目标特征的语义理解能力;然后,构建混合注意力模块缓解无锚跟踪器角点定位不准确问题,提高算法的跟踪准确性和定位精度;最后,在GOT10K、UAV123、LaSOT等数据集上进行广泛实验,并与当前的先进跟踪器进行比较,该算法可以较好地抵抗光照变化、快速运动及尺度变化等多种复杂因素带来的影响,同时,在多项评测指标上获得了良好的跟踪性能.

关键词：无锚注意力特征图双注意力孪生网络视觉跟踪

Transmissive 2-bit anisotropic coding metasurface

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Chinese Physics B 2022年第9期31卷 554-560页

作者： Pengtao Lai Zenglin Li Wei Wang Jia Qu Liangwei Wu Tingting Lv bo Lv Zheng Zhu Yuxiang Li Chunying Guan Huifeng Ma Jinhui shi Key Laboratory of In-Fiber Integrated Optics of Ministry of Education College of ScienceHarbin Engineering UniversityHarbin 150001China College of Aerospace and Civil Engineering Harbin Engineering UniversityHarbin 150001China State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China School of Electronic Science Northeast Petroleum UniversityDaqing 163318China Synergetic Innovation Center of Wireless Communication Technology Southeast UniversityNanjing 210096China

Coding metasurfaces have attracted tremendous interests due to unique capabilities of manipulating electromagnetic ***,archiving transmissive coding metasurface is still *** we propose a transmissive anisotropic coding metasurface that enables the independent control of two orthogonal *** polarization beam splitter and the orbital angular momentum(OAM)generator have been studied as typical applications of the anisotropic 2-bit coding *** simulated far field patterns illustrate that the x and y polarized electromagnetic waves are deflected into two different directions,*** anisotropic coding metasurface has been experimentally verified to realize an OAM beam with l=2 of right-handed polarized wave,resulting from both contributions from linear-to-circular polarization conversion and the phase profile *** work is beneficial to enrich the polarization manipulation field and develop transmissive coding metasurfaces.

关键词： transmissive coding metasurfaces polarization control orbital angular momentum

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地铁车站照明设计及创新

都市快轨交通 2012年第1期25卷 102-103页

作者：文波中铁二院工程集团有限责任公司成都610031

介绍目前地铁地下车站照明设计普遍采用的方案,从照明控制方面提出新的设计方案,包括系统组成、功能、控制要求,并对由综合监控实现的照明控制系统和智能照明控制系统进行比较。

关键词：地铁车站照明设计照明控制智能照明

《第22条军规》的叙事手法与反文化政治主题

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外国语文 2013年第4期29卷 40-44页

作者：文波重庆理工大学外国语学院重庆400054

约瑟夫·海勒对反文化政治主题的关注高度展示了作家的叙述艺术和政治意识。用与众不同的场景、无形的小说结构以及颇具戏剧性的人物塑造,海勒成功地将自己的叙述转换成一种独特的反文化政治学。显而易见,《第22条军规》不仅具有叙述学... 详细信息

约瑟夫·海勒对反文化政治主题的关注高度展示了作家的叙述艺术和政治意识。用与众不同的场景、无形的小说结构以及颇具戏剧性的人物塑造,海勒成功地将自己的叙述转换成一种独特的反文化政治学。显而易见,《第22条军规》不仅具有叙述学上的贡献而且具有意义上的深度。论文从社会、历史与文化批判的视角,结合分析作品的叙述策略,从多层面维度对作品的反文化主题进行探究。

关键词：《第22条军规》叙事反文化政治

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函数逼近神经网络的一种快速学习算法

红外与毫米波学报 1998年第4期17卷 303-307页

作者：朱炬波马士林国防科技大学七系

通过分析待学习参数的不同特性，提出一种快速收敛方法，使网络的收敛速度大大提高．通过对多种函数的实验，与不同的网络结果对比，表明此方法具有很强的普遍性．

关键词：神经网络函数逼近子波分析学习算法

Process modeling gas atomization of close-coupled ring-hole nozzle for 316L stainless steel powder production

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Chinese Physics B 2021年第5期30卷 617-629页

作者： Peng Wang Jing Li Hen-San Liu Xin Wang bo-Rui Du Ping Gan shi-Yuan Shen Bin Fan Xue-Yuan Ge Miao-Hui Wang State Key Laboratory for Advanced Forming Technology and Equipment China Academy of Machinery and TechnologyBeijing 100083China Beijing National Innovation Institute of Lightweight Ltd. Beijing 100083China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

The paper aims at modeling and simulating the atomization process of the close-coupled ring-hole nozzle in vacuum induction gas atomization(VIGA)for metallic powder *** of all,the primary atomization of the ring-hole nozzle is simulated by the volume of fluid(VOF)coupled large eddy simulation(LES)*** simulate the secondary atomization process,we use the method of selecting the droplet sub-model and the VOF *** results show that the ring-hole nozzle forms a gas recirculation zone at the bottom of the delivery tube,which is the main reason for the formation of an annular liquid film during the primary *** addition,the primary atomization process of the ring-hole nozzle consists of three stages:the formation of the serrated liquid film tip,the appearance and shedding of the ligaments,and the fragmentation of *** the same time,the primary atomization mainly forms spherical droplets and long droplets,but only the long droplets can be reserved and proceed to the secondary ***,increasing the number of ring holes from 18 to 30,the mass median diameter(MMD,d_(50))of the primary atomized droplets decreases first and then increases,which is mainly due to the change of the thickness of the melt ***,the secondary atomization of the ring-hole nozzles is mainly in bag breakup mode and multimode breakup model,and bag breakup will result in the formation of hollow powder,which can be avoided by increasing the gas velocity.

关键词： metallic powder hollow powder gas atomization ring-hole nozzle

Characteristics and mechanisms of subthreshold voltage hysteresis in 4H-SiC MOSFETs

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Chinese Physics B 2021年第4期30卷 610-615页

作者： Xi-Ming Chen Bang-Bing shi Xuan Li Huai-Yun Fan Chen-Zhan Li Xiao-Chuan Deng Hai-Hui Luo Yu-Dong Wu bo Zhang School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of Advanced Power Semiconductor Devices Zhuzhou CRRC Times Semiconductor Company Ltd.Zhuzhou 412001China

In order to investigate the characteristics and mechanisms of subthreshold voltage hysteresis(ΔV_(th,sub)) of 4 H-SiC metal-oxide-semiconductor field-effect transistors(MOSFETs),4 H-SiC planar and trench MOSFETs and corresponding P-type planar and trench metal-oxide-semiconductor(MOS) capacitors are fabricated and *** with planar MOSFEF,the trench MOSFET shows hardly larger ΔV_(th,sub) in wide temperature range from 25 0 C to 300 0 *** operating temperature range is from 25 ℃ to 300 ℃,the off-state negative V_(gs) of planar and trench MOSFETs should be safely above-4 V and-2 V,respectively,to alleviate the effect of ΔV_(th,sub) on the normal *** the help of P-type planar and trench MOS capacitors,it is confirmed that the obvious ΔV_(th,sub) of 4 H-SiC MOSFET originates from the high density of the hole interface traps between intrinsic Fermi energy level(E_(i)) and valence band(E_(v)).The maximumΔV_(th,sub) of trench MOSFET is about twelve times larger than that of planar MOSFET,owing to higher density of interface states(D_(it)) between E_(i) and E_(v).These research results will be very helpful for the application of 4 H-SiC MOSFET and the improvement of ΔV_(th,sub) of 4 H-SiC MOSFET,especially in 4 H-SiC trench MOSFET.

关键词： 4H-SiC MOSFET subthreshold voltage hysteresis P-type MOS capacitor density of interface states

Pulmonary artery aneurysm protruding into the bronchus as an endobronchial mass:A case report

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World Journal of Clinical Cases 2023年第28期11卷 6792-6796页

作者： Min Li wen-Ye Zhu Rong-Rong Wu Le Wang Meng-Ting Mo shi-Nan Liu Dong-Yi Zhu Zhuang Luo Department of Respiratory and Critical Care Medicine The First Affiliated Hospital of Kunming Medical UniversityKunming 650032Yunnan ProvinceChina Department of Pharmacy The First Affiliated Hospital of Kunming Medical UniversityKunming 650032Yunnan ProvinceChina Department of Radiology The First People’s Hospital of Yunnan Province/Affiliated Hospital of Kunming University of Science and TechnologyKunming 650034Yunnan ProvinceChina

BACKGROUND Pulmonary artery(PA)aneurysms are usually diagnosed radiographically and present as small or large lesions resembling inflammation or a neoplasm on chest *** has rarely been reported as an endobronchial *** SUMMARY We report the case of a 64-year-old man who presented with recurrent *** revealed a tumorous protrusion blocking the right middle lobe bronchus,which was confirmed to be a PA aneurysm using endobronchial ultrasound bronchoscopy and computed tomography *** Although endobronchial PA aneurysms are rare,bronchoscopists need to add this lesion to the list of endobronchial masses for which a biopsy is to be assiduously avoided.

关键词： Pulmonary artery aneurysm Endobronchial mass Endobronchial ultrasound bronchoscopy Computed tomography angiography Case report