新形式下高职高专英语教师教学能力的重塑

高职高专英语教学改革的目标向英语教师提出了新的要求和挑战。为适应新的教学理念和模式以及新的教材和检测法，高职高专英语教师除了具备扎实的专业知识和良好的职业素质以外，还应重塑与之相适应的各种教学技能或能力。这些技能或能力包括：交流技能，多媒体教学技能，跨学科能力和教研能力。     

自学·探究·辅导教学法在高中物理 教学中的实践研究

在全面推进素质教育和课程改革的背景下,结合新建学校的实际情况,依托选用教材以及自编《高中 物理教学讲义》,采用自学·探究·辅导教学法在教学中对普通高中物理课程标准(实验) 的实施进行实践性尝试. 介绍2010 - 2013 年实践过程中的基本实施程序、原则及效果等情况,并对实践过程中反映出的一些相关问题进行 分析讨论     

大学物理教学过程的优化设计

该文讨论了当前工科大学物理课程教学所面临的问题，提出了运用标准化单元教学法和多媒体教学手段改革教学方法、优化教学过程及质量控制的措施。     

TPACK理论框架下大学物理实验教学设计与整合

基于整合技术的学科教学法知识,建构大学物理实验TPACK教学框架.从教学内容、教学方法、教学技术三方面探讨大学物理实验教学设计方案.体现以"学生为本"的教育理念,使实验内容系列化、层次化、专题化、个性化;基于"互联网+"技术构建实验教学信息资源服务平台,优化教育环境,实现资源共享;开展问题创设的混合式教学法,内化学生的自主创新性研究能力.以期改进传统实验教学模式,推动大学物理实验教学改革.     

“互联网+教育”下的大学物理全英文课程创新实践

基于多年的全英文大学物理课程教学实践与探索,中国农业大学全英文"大学物理"课程采用英文原版教材,实施与信息化技术相适应的新型教学模式;引进国内外一流大学的先进教学方法和理念——同伴教学法、雨课堂、国外Pearson在线学习和作业提交系统等。本文介绍以上卓越的教学实践方法及其应用成果,以飨读者。     

大学物理学PBL混合式教学模式探索

大学物理学是理工科类专业本科生必修的公共基础课,针对大学物理学传统理论教学学生学习兴趣不足、师生互动不足等问题,结合我校工科类专业的实际问题,分析了工科专业大学物理课程的教学特点,提出基于PBL教学法的教学改革方案。在智慧教育理念的引领下,应用PBL教学的同时,把传统教学和信息化教学进行融合,优化大学物理课程教学思路,提高课堂教学效果。     

思政教学结合同伴教学法融入大学物理实验的探索

本文将思政教学结合同伴教学法运用到大学物理实验课程之中,新的教学法能有效改善思政教学融入基础实验教学难的问题,变传统灌输式教学为自主讨论式学习,大幅度提升学生的兴趣和学习效果.这种思政教学结合同伴教学法问题导向式教学,把社会主义核心价值观自然贯穿于整个教学之中,真正做到"润物细无声".     

会讯

鄂，桂，津地区大学物理教学与教材改革研讨会议于1993年10月22日在湖北工学院分部召开，出席会议的有鄂、桂，津地区的10所工科院校的25名代表．会议的主要议程是：(1)传达贯彻1993年9月下旬在长沙召开的全国工科物理课委会大学物理课程教学指导组(扩大)工作会议精神。(2)研讨在当前形势下的工科物理教学与教材改革问题。     

高中物理情感目标边缘化的成因分析

编者按:本文提出课程改革实验中的一个新问题,也是目前广大物理教师感到困惑的问题.从教育到课程,到教材,再到教学,中间每一个环节每个学科都有自己需要研究的特殊内容和问题.物理学科教育在情感领域有着广阔的空间,重要的是大家应该以现代教育理念去进行挖掘,去实践创新.欢迎大家结合自己实践参加这个讨论.     

基于网络环境的大学物理实验教学改革研究与实践

本文结合我校大学物理实验课程改革的具体实际, 介绍了课程教学的设计理念和课程教学的组织模 式, 通过课程改革的运行, 总结出大学物理实验课程改革对人才培养发挥的作用, 指出了课程改革存在的问题, 以 及解决问题的方法     

Guided-Wave Two-Dimensional Acousto-Optic Scanner Using Proton-Exchanged Lithium Niobate Waveguide

Two-dimensional scanning of a 0.6328 mum guided-light beam has been realized using noncolinear acousto-optic (AO) coplanar Bragg diffraction together with colinear AO guided-mode to substrate radiation-mode conversion in a Z-cut Xpropagation LiNbO3 proton-exchanged (PE) waveguide. The two surface acoustic (SAW) waves utilized are at the center frequencies of 500 and 200 MHz, propagating in the Y and X axes, respectively. Two-dimensional scanning of approximately 720 resolvable light beam spots, namely, 18 40 (horizontal vertical) scanning, has been demonstrated using a light beam of 1.0 mm aperture. The total number of resolvable beam spots can be greatly increased from 720 by simply utilizing SAW transducers of larger bandwidth and a light beam of greater aperture. It should also be possible to significantly increase the diffraction efficiency from 3 % by optimizing the parameters of the PE waveguide and the SAWs.     

Effect ofγ-radiation on the spectral luminescence characteristics of impure cadmium tungstate crystals

Results of a study of the effect of γ-radiation on the spectral luminescence properties of cadmium tungstate crystals doped with silver, bismuth, and molybdenum cations are presented. Spectral characteristics of the nondnnnoped crystals are briefly described. Absorption and photo and X-ray luminescence spectra of the crystals taken before and after exposure to γ-radiation (5.5·10⁴ Gy) are compared. It is found that the spectral characteristics of the crystals doped with silver, bismuth, and molybdenum cations do not change markedly after the exposure. The relation between the type of impurity-induced defects, individual characteristics of the impurity cations, and the character of the effect of γ-radiation on the spectral luminescence properties of impure crystals is analyzed (preliminarily). Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 1, pp. 55–60, January–February, 1997.     

Femtosecond Transform-Limited Pulse Generation by Compensating for the Linear Chirp of SPM Spectra in Dispersion Shifted Fibers

A simple technique of pulse compression, based on the linear chirp compensation of self-phase modulation (SPM) spectra in dispersion shifted fibers, is demonstrated. The optimization procedure is carried out, for a short span of a single-mode fiber, using a parabolic law, which describes the behavior of the squared output pulse width versus the pump peak power in the case of Gaussian pulses. The experimental results give a minimum pulse duration of 233 fs, which is in good agreement with the model. Shorter and coherent pulses, down to 90 fs, have been obtained by inserting an interference filter at the optical output.     

Sorting of bending magnets for the SSRF booster

The Shanghai Synchrotron Radiation Facility(SSRF)booster ring,a full energy injector for the storage ring,is deigned to accelerate the electron beam energy from 150MeV to 3.5GeV that demands high extraction efficiency at the extraction energy with low beam loss rate when electrons are ramping.Closed orbit distortion(COD)caused by bending magnet field uniformity errors which affects the machine performance harmfully could be effectively reduced by bending magnet location sorting.Considering the affections of random errors in measurement,both ideal sorting and realistic sorting are studied based on measured bending magnet field uniformity errors and one reasonable combination of bending magnets which can reduce the horizontal COD by a factor of 5is given as the final installation sequence of the booster bending magnets in this paper.     

Measurement of nonlinear coefficient of optical fiber based on small chirped soliton transmission

We measure the waveform and phase curves of short optical pulses before and after transmission over different lengths of fibers by use of the pulse analyzer with the frequency-resolved optical gating (FROG),and numerically simulate pulse evolution under the experimental conditions.The nonlinear coefficient of the fiber is given by comparing the experimental results with the numerical ones.Difference between the experiment and numerical simulation is analyzed.     

Resonance scattering of canonical elastic shells in absorbing fluid medium

Resonance scattering of elastic spherical shell and cylindrical shell while the surrounding fluid medium has absorption is studied. The normal mode solution derived using exact elastic theory and the separation of variables is still applicable. However, the scattering form function has to be modified for the absorbing medium, otherwise the unreasonable result would be obtained. The backscattering form function in the absorbing medium is redefined, and the form function of elastic spherical and cylindrical shell with vacuum or solid matter filled is calculated in various absorption conditions. The results show that the absorption of surrounding fluid leads to notable attenuation of the coincidence resonances in the mid-frequency, but it has a little influence on the low-frequency resonance scattering induced by the filler inside the shell.     

Single-beam self-referenced phase-sensitive surface plasmon resonance sensor with high detection resolution

A versatile and low-cost single-beam self-referenced phase-sensitive surface plasmon resonance(SPR)sensing system with ultra-high resolution performance is presented.The system exhibits a root-mean-square phase fluctuation of ±0.0028.over a period of 45 min.i.e.a resolution of±5.2×10-9 refractive index units.The enhanced performance has been achieved through the incorporation of three design elements:a true single-beam configuration enabling complete self-referencing so that only the phase change associated with SPR gets detected,a differential measurement scheme to eliminate spurious signals not related to the sensor response,and the elimination of retardation drifts by incorporating temperature stabilization in the liquid crystal phase modulato .Our design should bring the detection sensitivity of non-labeling SPR biosensing closer to that achievable by conventional fluorescence-based techniques.     

Influences of SiO2 protective layers and annealing on the laser-induced damage threshold of Ta2O5 films

Ta2O5 films are prepared on BK7 substrates with conventional electron beam evaporation deposition.The effects of SiO2 protective layers and annealing on the laser-induced damage threshold (LIDT) of the films are investigated.The results show that SiO2 protective layers exert little influence on the electric field intensity(EFI)distribution,microstructure and microdefect density but increase the absorption slightly.Annealing iS effective on decreasing the microdefect density and the absorption of the films.Both SiO2 protective layers and annealing are beneficial to the damage resistance of the films and the latter is more effective to improve the LIDT.Moreover,the maximal LIDT of Ta2O5 films is achieved by the combination of SiO2 protective layers and annealing.     

A stereo matching algorithm using multi-peak candidate matches and geometric constraints

Gray cross correlation matching technique is adopted to extract candidate matches with gray cross correla- tion coefficients less than some certain range of maximal correlation coefficient called multi-peak candidate matches. Multi-peak candidates are extracted corresponding to three closest feature points at first. The corresponding multi-peak candidate matches are used to construct the model polygon. Correspondence is determined based on the local geometric relations between the three feature points and the multi-peak candidates. The disparity test and the global consistency checkout are applied to eliminate the remaining ambiguous matches that are not removed by the local geometric relational test. Experimental results show that the proposed algorithm is feasible and accurate.