1.设计思路语言学习应以应用为目标,着重培养学生的交际能力,并能解决实际的生活问题。在目前的英语教学里,教师一般会在同一堂课里进行'听'与'说'的技能训练,其中'听'是'说'的前提,'说'是'...1.设计思路语言学习应以应用为目标,着重培养学生的交际能力,并能解决实际的生活问题。在目前的英语教学里,教师一般会在同一堂课里进行'听'与'说'的技能训练,其中'听'是'说'的前提,'说'是'听'的延伸。在听说课里,听力策略和会话技巧是帮助学生实现交流目的和信息沟通的桥梁,这也是教学设计的重点。2.教材分析本课的内容是牛津英语9B Module 2 Unit 3 The environment的听说课。展开更多
Miniature computational spectrometers,distinguished by their compact size and light weight,have shown great promise for on-chip and portable applications in the fields of healthcare,environmental monitoring,food safet...Miniature computational spectrometers,distinguished by their compact size and light weight,have shown great promise for on-chip and portable applications in the fields of healthcare,environmental monitoring,food safety,and industrial process monitoring.However,the common miniaturization strategies predominantly rely on advanced micronano fabrication and complex material engineering,limiting their scalability and affordability.Here,we present a broadband miniaturized computational spectrometer(ElastoSpec)enabled by the photoelastic effect,featuring easy-to-prepare and configurable implementation with adaptive modulation units selection for optimized spectral reconstruction.A single computational photoelastic spectral filter,with only two polarizers and a plastic sheet,is designed to be integrated onto the top of a CMOS sensor for snapshot spectral acquisition.The distinct spectral modulation units are directly generated from different spatial locations of the filter,due to the photoelastic-induced chromatic polarization effect of the plastic sheet.We experimentally demonstrate that ElastoSpec offers excellent reconstruction accuracy for the measurement of both simple narrowband and complex spectra.ElastoSpec exhibits a spectral resolution of 2 nm and achieves a full width at half maximum(FWHM)error of approximately 0.2 nm for monochromatic inputs.It also maintains a mean squared error(MSE)value on the order of 10-3 with only 10 spectral modulation units.Furthermore,we develop an adaptive strategy for selecting modulation units to enhance spectrum sensing performance through the flexibility in optimizing the modulation effectiveness and the number of spectral modulation units.This work avoids the need for complex micro-nano fabrication and specialized materials for the design of computational spectrometers,thus paving the way for the development of simple,cost-effective,and scalable solutions for on-chip and portable spectral sensing devices.展开更多
1教学目标:1.1知识目标:(1)多数学生能够在语境中听说理解句子:Where do you live?(2)所有学生能够理解文本内容。1.2能力目标:(1)多数学生能够正确模仿朗读文本对话。(2)所有学生能够运用'Where do you live?'结构来介绍自己,...1教学目标:1.1知识目标:(1)多数学生能够在语境中听说理解句子:Where do you live?(2)所有学生能够理解文本内容。1.2能力目标:(1)多数学生能够正确模仿朗读文本对话。(2)所有学生能够运用'Where do you live?'结构来介绍自己,了解朋友。1.3情感态度目标:感知英语的实用性。展开更多
1教学背景本课来自外研社新标准英语四年级下册第八模块第一单元Module 8 Unit 1 He lives in the east of the US.通过本节课的学习,使得学生们在今后的学习和生活中能运用英语来描述其城市的地理位置。2教材分析本模块的主演内容是说...1教学背景本课来自外研社新标准英语四年级下册第八模块第一单元Module 8 Unit 1 He lives in the east of the US.通过本节课的学习,使得学生们在今后的学习和生活中能运用英语来描述其城市的地理位置。2教材分析本模块的主演内容是说明方位,谈论中国和美国的城市。Unit 1的课文情境是Daming向Sam介绍美国。Daming说他的表哥Simon住在美国东部。Sam问是不是住在洛杉矶。展开更多
We demonstrate fast time-division color etectroholography using a multiple-graphics-processing-unit （GPU） cluster system with a spatial light modulator and a controller to switch the color of the reconstructing ligh...We demonstrate fast time-division color etectroholography using a multiple-graphics-processing-unit （GPU） cluster system with a spatial light modulator and a controller to switch the color of the reconstructing light. The controller comprises a universal serial bus module to drive the liquid crystal optical shutters. By using the controller, the computer-generated hologram （CGH） display node of the multiple-GPU cluster system synchronizes the display of the CGH with the color switching of the reconstructing light. Fast time-division color electroholography at 20 fps is realized for a three-dimensional object comprising 21,000 points per color when 13 GPUs are used in a multiple-GPU cluster system.展开更多
The selection and modulation of the static and dynamic units within molecular-scale actuators,particularly regarding framework structures,are critical for initiating synergistic inter-and intramolecular motions.Howeve...The selection and modulation of the static and dynamic units within molecular-scale actuators,particularly regarding framework structures,are critical for initiating synergistic inter-and intramolecular motions.However,achieving controllable macroscopic mechanical switching through the collective transfer of microscopic motion while minimizing energy dissipation presents a significant challenge.This paper reports a two-dimensional magnetic coordination framework,Fe(tpe)(NCBH_(3))_(2)(tpe=1,1,2,2-tetra(pyridin-4-yl)ethene,1),synthesized by the minimally sized,planar tetradentate pyridine-based tpe ligand in conjunction with the precursor Fe(NCBH_(3))_(2).A single-crystal-to-single-crystal(SCSC)transformation,occurring via the adsorption and desorption of C_(2)Cl_(4) vip molecules,is directly associated with the activation of spin crossover(SCO)and CO_(2)/C_(2)H_(2) separation performance,correlating with the overall elastic frustration and toughness present in the framework.The establishment of multiple C–Hδ+⋯Hδ−–B dihydrogen bonds surrounding the tpe ligand facilitates its effective function as a static unit,simultaneously augmenting cooperativity with the Fe(NCBH_(3))_(2) acting as a dynamic unit,thereby enabling a macroscopic shape change in the free single crystal with reduced energy dissipation.The spin transition of the Fe2+metal center,activated by SCSC transformation and serving as a driving force for crystal macroscopic deformation,provides new insights into the mechanism of structural adaptability in frameworks and designing novel molecular machines.展开更多
By combining substrate-side,phase-cancelling reflection with monolayer graphene reconfigured as nanoscale tunable lateral capacitors within metasurface unit cells,terahertz amplitude modulation exceeding 40 dB at arou...By combining substrate-side,phase-cancelling reflection with monolayer graphene reconfigured as nanoscale tunable lateral capacitors within metasurface unit cells,terahertz amplitude modulation exceeding 40 dB at around 2 THz with 30 MHz reconfiguration speed is demonstrated under solid-state,room-temperature conditions.The design provides a scalable and practical platform for high-speed,large-dynamic-range terahertz communications,real-time imaging,and programmable photonic circuits.展开更多
文摘1.设计思路语言学习应以应用为目标,着重培养学生的交际能力,并能解决实际的生活问题。在目前的英语教学里,教师一般会在同一堂课里进行'听'与'说'的技能训练,其中'听'是'说'的前提,'说'是'听'的延伸。在听说课里,听力策略和会话技巧是帮助学生实现交流目的和信息沟通的桥梁,这也是教学设计的重点。2.教材分析本课的内容是牛津英语9B Module 2 Unit 3 The environment的听说课。
基金National Natural Science Foundation of China(U23A20481,62503032,62275010,62573029)Fundamental Research Funds for the Central Universities(KG16-3549-01)+1 种基金Australian Research Council(DP220101417)Discovery Early Career Researcher Awards(DE250100406)。
文摘Miniature computational spectrometers,distinguished by their compact size and light weight,have shown great promise for on-chip and portable applications in the fields of healthcare,environmental monitoring,food safety,and industrial process monitoring.However,the common miniaturization strategies predominantly rely on advanced micronano fabrication and complex material engineering,limiting their scalability and affordability.Here,we present a broadband miniaturized computational spectrometer(ElastoSpec)enabled by the photoelastic effect,featuring easy-to-prepare and configurable implementation with adaptive modulation units selection for optimized spectral reconstruction.A single computational photoelastic spectral filter,with only two polarizers and a plastic sheet,is designed to be integrated onto the top of a CMOS sensor for snapshot spectral acquisition.The distinct spectral modulation units are directly generated from different spatial locations of the filter,due to the photoelastic-induced chromatic polarization effect of the plastic sheet.We experimentally demonstrate that ElastoSpec offers excellent reconstruction accuracy for the measurement of both simple narrowband and complex spectra.ElastoSpec exhibits a spectral resolution of 2 nm and achieves a full width at half maximum(FWHM)error of approximately 0.2 nm for monochromatic inputs.It also maintains a mean squared error(MSE)value on the order of 10-3 with only 10 spectral modulation units.Furthermore,we develop an adaptive strategy for selecting modulation units to enhance spectrum sensing performance through the flexibility in optimizing the modulation effectiveness and the number of spectral modulation units.This work avoids the need for complex micro-nano fabrication and specialized materials for the design of computational spectrometers,thus paving the way for the development of simple,cost-effective,and scalable solutions for on-chip and portable spectral sensing devices.
文摘1教学目标:1.1知识目标:(1)多数学生能够在语境中听说理解句子:Where do you live?(2)所有学生能够理解文本内容。1.2能力目标:(1)多数学生能够正确模仿朗读文本对话。(2)所有学生能够运用'Where do you live?'结构来介绍自己,了解朋友。1.3情感态度目标:感知英语的实用性。
文摘1教学背景本课来自外研社新标准英语四年级下册第八模块第一单元Module 8 Unit 1 He lives in the east of the US.通过本节课的学习,使得学生们在今后的学习和生活中能运用英语来描述其城市的地理位置。2教材分析本模块的主演内容是说明方位,谈论中国和美国的城市。Unit 1的课文情境是Daming向Sam介绍美国。Daming说他的表哥Simon住在美国东部。Sam问是不是住在洛杉矶。
基金partially supported by the Japan Society for the Promotion of Science through a Grant-in-Aid for Scientific Research(C)under Grant No.15K00153
文摘We demonstrate fast time-division color etectroholography using a multiple-graphics-processing-unit （GPU） cluster system with a spatial light modulator and a controller to switch the color of the reconstructing light. The controller comprises a universal serial bus module to drive the liquid crystal optical shutters. By using the controller, the computer-generated hologram （CGH） display node of the multiple-GPU cluster system synchronizes the display of the CGH with the color switching of the reconstructing light. Fast time-division color electroholography at 20 fps is realized for a three-dimensional object comprising 21,000 points per color when 13 GPUs are used in a multiple-GPU cluster system.
基金funded by the Ningbo Soft Science Science Research Program(2023R002)Ningbo Natural Science Foundation(2022J096)+1 种基金National Natural Science Foundation of China(21571110)Natural Science Foundation of Zhejiang province(LY18B010003).
文摘The selection and modulation of the static and dynamic units within molecular-scale actuators,particularly regarding framework structures,are critical for initiating synergistic inter-and intramolecular motions.However,achieving controllable macroscopic mechanical switching through the collective transfer of microscopic motion while minimizing energy dissipation presents a significant challenge.This paper reports a two-dimensional magnetic coordination framework,Fe(tpe)(NCBH_(3))_(2)(tpe=1,1,2,2-tetra(pyridin-4-yl)ethene,1),synthesized by the minimally sized,planar tetradentate pyridine-based tpe ligand in conjunction with the precursor Fe(NCBH_(3))_(2).A single-crystal-to-single-crystal(SCSC)transformation,occurring via the adsorption and desorption of C_(2)Cl_(4) vip molecules,is directly associated with the activation of spin crossover(SCO)and CO_(2)/C_(2)H_(2) separation performance,correlating with the overall elastic frustration and toughness present in the framework.The establishment of multiple C–Hδ+⋯Hδ−–B dihydrogen bonds surrounding the tpe ligand facilitates its effective function as a static unit,simultaneously augmenting cooperativity with the Fe(NCBH_(3))_(2) acting as a dynamic unit,thereby enabling a macroscopic shape change in the free single crystal with reduced energy dissipation.The spin transition of the Fe2+metal center,activated by SCSC transformation and serving as a driving force for crystal macroscopic deformation,provides new insights into the mechanism of structural adaptability in frameworks and designing novel molecular machines.
文摘By combining substrate-side,phase-cancelling reflection with monolayer graphene reconfigured as nanoscale tunable lateral capacitors within metasurface unit cells,terahertz amplitude modulation exceeding 40 dB at around 2 THz with 30 MHz reconfiguration speed is demonstrated under solid-state,room-temperature conditions.The design provides a scalable and practical platform for high-speed,large-dynamic-range terahertz communications,real-time imaging,and programmable photonic circuits.
