检索结果-南通市图书馆

教师教学能力的结构性提升与研究——基于78名校级督导专家的评课调研分析

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

青岛职业技术学院学报 2024年第2期37卷 23-27页

作者：郑水祥姚登旺谭凯王宏超南京城市职业学院质科处南京211200

教师教学能力是教师专业发展的核心要素。课堂教学督导作为推动高职教师个人专业能力提升的关键组成,在教学保障和评价体系中发挥着重要作用。在当前高质量发展的新态势下,高职院校在探索增强教师教学能力的教学实践中面临许多现实困境... 详细信息

教师教学能力是教师专业发展的核心要素。课堂教学督导作为推动高职教师个人专业能力提升的关键组成,在教学保障和评价体系中发挥着重要作用。在当前高质量发展的新态势下,高职院校在探索增强教师教学能力的教学实践中面临许多现实困境。高职教师需在职业信念和责任担当、优化教学过程的协调把控、提升教学内容选择与教学设计的能力、增强课堂交流与师生沟通、实现板书与PPT的兼顾融合等方面的进行提升和优化。

关键词：课堂教学教学能力高职教师

Niobium telluride absorber for a mode-locked vector soliton fiber laser

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 130-138页

作者： XinXin Shang NanNan Xu Jia Guo Shuo Sun HuaNian Zhang SWageh Ahmed AAl-Ghamdi Han Zhang dengwang Li Shandong Province Key Laboratory of Medical Physics and Image Processing Technology Shandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250014China Institute of Microscale Optoelectronics Collaborative Innovation Center for Optoelectronic Science&TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060China School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255049China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Niobium telluride(NbTe_(2)),an emerging transition metal dichalcogenide material,has been theoretically predicted to have nonlinear absorption properties and excellent optical ***,only a few studies of the utilization of NbTe_(2)in ultrafast photonics have been *** this work,a NbTe_(2)-based saturable absorber(SA)was applied in an erbium-doped fiber as a mode-locked device,and a vector soliton based on NbTe_(2)was obtained for the first ***_(2)-PVA film SA was successfully prepared by the liquid-phase exfoliation and spin coating methods,with a modulation depth of up to 10.87%.The nonlinear absorption coefficient of NbTe_(2)-based SA film tested through the open-aperture Z-scan laser measurement is 0.62×10^(−11) m/W.A conventional soliton with a pulse duration of 858 fs was generated using NbTe_(2)-based SA,which was demonstrated to be a kind of polarization-locked vector soliton in further *** experimental results reveal the nonlinear optical properties of NbTe_(2)and broaden its applications in ultrafast photonic devices.

关键词： niobium telluride saturable absorber mode-locked pulse fiber laser

在线全文

学校读者我要写书评

暂无评论

消光材料研究进展

包装学报 2024年第2期16卷 87-98页

作者：赖登旺刘丽吴昊操吴言成浩李玉华熊玉兵杨军湖南工业大学包装与材料工程学院湖南株洲412007 浙江理工大学龙港研究院有限公司浙江龙港325802 株洲时代新材料科技股份有限公司湖南株洲412007

消光材料是一种具有削弱光线作用的材料。由于消光材料具有优异的消光性能,因此广泛应用于需要表面呈现哑光效果的场景中。通过对消光材料的种类进行分类介绍,详细地对无机消光材料、有机消光材料和生物消光材料进行综述。对于生物消光... 详细信息

消光材料是一种具有削弱光线作用的材料。由于消光材料具有优异的消光性能,因此广泛应用于需要表面呈现哑光效果的场景中。通过对消光材料的种类进行分类介绍,详细地对无机消光材料、有机消光材料和生物消光材料进行综述。对于生物消光材料侧重于考察可见光消光和红外消光两个方面的性能。生物消光材料因其环保无污染的特性,并且在可见光和红外消光方面具有优势,将会主导绿色消光材料的发展趋势。

关键词：消光材料二氧化硅二氧化钛自消光水性聚合树脂生物消光材料

Passive mode-locked Er-doped fiber laser pulse generation based on titanium disulfide saturable absorber

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2021年第5期22卷 756-766页

作者： Xinxin SHANG Linguang GUO Huanian ZHANG dengwang LI Qingyang YUE Shandong Provincial Engineering and Technical Center of Light Manipulations Shandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250358China School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255049China Shandong Key Laboratory of Medical Physics and Image Processing School of Physics and ElectronicsShandong Normal UniversityJinan 250358China Shandong Institute of Industrial Technology for Health Sciences and Precision Medicine School of Physics and ElectronicsShandong Normal UniversityJinan 250358China

In this study,titanium disulfide(TiS_(2))polyvinyl alcohol(PVA)film-type saturable absorber(SA)is synthesized with a modulation depth of 5.08%and a saturable intensity of 10.62 MW/cm^(2) by liquid-phase exfoliation and spin-coating *** TiS2-based SA has a strong nonlinear saturable absorption property,two types of optical soliton were observed in a mode-locked Er-doped fiber *** the pump power was raised to 67.3 mW,a conventional mode-locked pulse train with a repetition rate of 1.716 MHz and a pulse width of 6.57 ps was generated,and the output spectrum centered at 1556.98 nm and 0.466 nm spectral width with obvious Kelly sidebands was *** type of mode-locked pulse train with the maximum output power of 3.92 mW and pulse energy of 2.28 nJ at the pump power of 517.2 mW was achieved when the polarization controllers were *** TiS2-based SA has excellent nonlinear saturable absorption characteristics,broad applications in ultrafast photonic are expected.

关键词： Fiber laser Passive mode-locked Saturable absorber Titanium disulfide

Automated segmentation of intraretinal cystoid macular edema based on Gaussian mixture model

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2020年第1期3卷 35-47页

作者： Jinghong Wu Sijie Niu Qiang Chen Wen Fan Songtao Yuan dengwang Li Shandong Key Laboratory of Medical Physics and Image Processing&Shandong Provincial Engineering and Technical Center of Light Manipulations School of Physics and Electronics Shandong Normal University Jinan 250358P.R.China School of Information Science and Engineering University of Jinan Jinan 250022P.R.China School of Computer Science and Engineering Nanjing University of Science and Technology Nanjing 210094 P.R.China Department of Ophthalmology the First Affiliated Hospital with Nanjing Medical University Nanjing 210094P.R.China

We introduce a method based on Gaussian mixture model(GMM)clustering and level-set to automatically detect intraretina fluid on diabetic retinopathy(DR)from spectral domain optical coherence tomography(SD-OCT)images in this ***,each B-scan is segmented using GMM *** original chustering results are refined using location and thickness ***,the spatial information among every consecutive five B-scans is used to search potential ***,the improved level-set method is used to obtain the accurate *** high sensitivity and accuracy demonstrated here show its potential for detection of fluid.

关键词： Gaussian mixture model level-set spectral domain optical coherence tomography(SD-OCT) segmentation

Research on Path Tracking for Autonomous Vehicle Based on MPC with Adoptive Variable Step Weight

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research on Path Tracking for Autonomous Vehicle Based on MP...

2023中国汽车工程学会年会暨展览会

作者： Wang Jiangwu Pan Shaofei Yang Zhengyan Zhai dengwang Dong Guoqing Li Maomeng Li Yaohua School of Automotive Engineering Chang'an University

The weighting factor in cost function for different predictive step is the same in conventional model predictive control(MPC) for autonomous *** means the importance of predictive results is the same whatever the distances from the vehicle,which is not in accord with the real *** order to improve path tracking for autonomous vehicle,the effects of weighing factor changing with predictive steps on the accuracy and stability are *** MPC controller which changes weighing factors with predictive steps according to vehicle speed and path curvature adaptively is *** results show the proposed controller can improve path tracking accuracy at low and medium speed and stability at high speed and large path curvature.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

光辐射起爆乙炔银-硝酸银光敏炸药同步性能

兵工学报 2022年第11期43卷 2791-2797页

作者：徐海斌杨军仵可陈博随亚光王等旺西北核技术研究所陕西西安710024

研究光敏炸药光起爆技术及其同步性是光敏炸药加载技术逼真模拟X光热-力学效应的关键。利用自研的镀膜光纤探针作为测时传感器,表征钨丝电爆炸产生强脉冲闪光引爆光敏炸药涂层的光起爆同步性能。结果表明:镀膜光纤探针作为测量单点起爆... 详细信息

研究光敏炸药光起爆技术及其同步性是光敏炸药加载技术逼真模拟X光热-力学效应的关键。利用自研的镀膜光纤探针作为测时传感器,表征钨丝电爆炸产生强脉冲闪光引爆光敏炸药涂层的光起爆同步性能。结果表明:镀膜光纤探针作为测量单点起爆时间的传感器,可以较高精度地获取光敏炸药涂层各点起爆时间;光照度越高则起爆同步性越好、光起爆延滞期越短;钨丝数量由1根增加至2根可以明显改善光起爆同步性,相邻测点最小起爆时差由0.6μs降为0.1μs,各测点光起爆延滞期由33.7~57.7μs降为13.0~20.4μs,为大面积光起爆技术研究提供了依据。

关键词：爆炸力学光敏炸药乙炔银-硝酸银同步性电爆炸光辐射起爆