中外物理教育研究与发展的初步比较

教学期刊论文的情况是教学情况的一种反映．国内外的物理教育研究期刊分别为《物理教学》、《大学物理》、Physics Education，The Physics Teacher和American Journal of Physics．文章利用物理教学期刊论文，分别从论文的形式(前言、摘要和参考文献)和内容两方面对中国与国际的物理教育研究与发展开展了初步的比较研究，通过利用教育理论对统计资料的解释初步揭示了国内外物理教育研究的差距，为它们的进一步发展提供了启发性和指导性的建议．     

物理教育期刊对科研原始创新的推动

从激发创造性学习的角度,本文概述了美国物理教育期刊的发展历程及其对前沿科学研究发展的推动作用.以《美国物理杂志》(American Journal of Physics)中的三篇典型性文章为例,说明了大学教育期刊也可以成为科学发展原始创新的平台.最后,本文结合实例,对国内物理教育和教学期刊的发展给出了建议.     

消息

在SCI数据库中，2004年“Chinese Physics”的影响因子为1．559，该项指标居中国物理类学术期刊第1位，在国际67种综合性物理类期刊中居第19位；《物理学报》的影响因子为1．250，该项指标居中国物理类学术期刊第2位，在国际67种综合性物理类期刊中居第28位。     

<原子与分子物理学报>作者群与学科发展现状透析研究

依据文献计量学原理,对１９９０～１９９９年期间《原子与分子物理学报》的论文作者群进行了统计、分析、归纳和研究,从中揭示出我国原子与分子物理学科研究的现状,作者所属系统的分布特点及其规律,确定了该刊核心作者的数量罕比例,同时也对作者的合著率、论文单元数作了统计分析研究。从作者研究的角度肯定了该刊作为本学科核心期刊的合理性,希冀对该学科及该刊的发展提供了可参考的数据。     

《高压物理学报》再次被确定为物理类核心期刊

2004年，《高压物理学报》再次被确定为物理类核心期刊，并人编2004版《中文核心期刊要目总览》，该书将于2004年7月由北京大学出版社出版。此版《中文核心期刊要目总览》按《中国图书分类法》的学科体系，列出了75个学科的核心期刊表。     

《高压物理学报》再次被确定为物理类核心期刊

最近，编辑部收到北京大学图书馆通知，《高压物理学报》再次被确定为物理类核心期刊，并入编2004版《中文核心期刊要目总览》，该书将于2004年7月由北京大学出版社出版。此版《中文核心期刊要目总览》按《中国图书分类法》的学科体系，列出了75个学科的核心期刊表。     

《物理》可以促进物理学研究成果向高新技术产业转化

20 0 1年期间 ,根据新闻出版署关于“建设中国期刊方阵工作方案的通知精神” ,《物理》参加了由科技部负责组织的科技期刊进入“中国期刊方阵”的评选活动 ,经过部门推荐和有关专家的严格评审 ,全国 5 0 0 0余种科技期刊中有 716种期刊入选 .《物理》进入“期刊方阵” ,并被评为“双效”(即社会效益和经济效益 )期刊 .从 2 0 0 2年第 1期开始 ,《物理》的封面印上了“双效”期刊标志 .《物理》被评为“双效”期刊是《物理》编委会和编辑部长期坚持正确的办刊方针的结果 ,根据这一办刊方针 ,《物理》的栏目设置和选题内容既注意促进物理学科…     

中国科学院物理研究所期刊室诚聘科技期刊编辑

中国科学院物理研究所期刊室出版发行的《中国物理快报》,《中国物理B》,《物理学报》,《物理》四本期刊,均足我同著名的学术期刊．现根据工作需要．面向国内外公开招聘编辑．     

《高压物理学报》再次被确定为物理类核心期刊

2004年,《高压物理学报》再次被确定为物理类核心期刊,并入编2004版《中文核心期刊要目总览》,该书于2004年7月由北京大学出版社出版。此版《中文核心期刊要目总览》按《中国图书分类法》的学科体系,列出了75个学科的核心期刊表。     

美国物理教育研究的特点及其启示

通过比较美国《物理评论快报》特刊PRST和国内优秀教育期刊《课程·教材·教法》以及《大学物理》杂志上2010~2013年的物理教育类文章,分析了美国物理教育研究在研究内容、研究模式、研究方法等方面的特点,指出了美、中两国在物理教育研究方面存在的差异,并提出了改善我国物理教育研究现状的思考和建议,力图为促进我国物理教育研究提供参考.     

白光和红绿蓝光LED可调光源研制

为了提高LED光源色温和亮度的调节精度和准确度,结合色温由低向高变化时光色所呈现的渐变特点,提出了一种低色温白光LED灯珠、高色温白光LED灯珠加红绿蓝光LED灯珠补偿式调光的方法.将色温分成三个部分进行调节,每个部分选用不同的LED灯珠组合来进行调光.实验结果表明:不同组合情况下的LED光源的初始输出色温相对于目标值的偏差范围在1％以内;亮度可以在保证色温不变的情况下独立进行调节,初始输出值与目标值的偏差范围在1％以内;经过微调之后可以达到目标值;达到了色温和亮度独立调节的要求;光源发光稳定,不会因为长时间工作而影响调节精度.     

Visualization and interferometry for cylindrical and spherical sample tomography and profilometry

A technique combining image processing and laser interferometry for visualizing and detecting the deformation of transparent cylindrical and spherical sample is proposed. This deformation includes geometric deformation such as volume transition in profilometry and physical deformation such as refractive index change in tomography. Phase contour lines are used for quantitative analysis and graphical representation of the deformation. This method allows us to visually detect the spatial variation of the deformation field and to evaluate the test quality such as misalignment of optical system. A theoretical analysis using phase contour map to characterize the deformation field is described in detail. A method using phase contour map to qualify the interferometric test is proposed. Analysis of test examples is carried out. Suggestions on using phase contour line method to ameliorate test system design are finally discussed.     

黑克、布劳、及伯曼-温采尔代数的诱导及分导系数和量子经典李代数的耦合与重新耦合系数

本文总结了计算黑克、布劳、及伯曼 温采尔代数在各种工数链下诱导及分导系数的线性方程方法(LEM)。特别强调了关于A,B,C,D型李代数及其量子情形与其中心代数之间的舒尔 魏尔 布劳双关性关系。这一关系使我们能够利用相应中心代数的诱导及分导系数计算出经典李代数及其量子情形的耦合与重新耦合系数。讨论了从该方法得到B,C,D型李代数不可约表示克罗内克积分解的应用。基于LEM还得到了处理对应于置换群CG系列问题的黑克代数张量积的方法。     

Quantum and Classical Disparity and Accord

Discrepancies and accords between quantum (QM) and classical mechanics (CM) related to expectation values and periods are generally found for both the harmonic oscillator (SHO) and a free particle in a box (FPB), which may apply generally. These indicate non-locality is expected throughout QM. The FPB energy states violate the Correspondence Principle. Previously unexpected accords are found and proven that 〈x ²〉 _CM =〈x ²〉 _QM and τ _CM =τ _QMb (beat period i.e. beats between the phases for adjoining energy states) for the SHO for all quantum numbers, n. However, for the FPB the beat periods differ at small n. It is shown that a particle’s velocity in an infinite square well varies, no matter how wide the box, nor how far the particle is from the walls. The quantum free particle variances share an indirect commonality with the Aharonov-Bohm and Aharonov-Casher effects in that there is a quantum action in the absence of a force. The concept of an “Expectation Value over a Partial Well Width” is introduced. This paper raises the question as to whether these inconsistencies are undetectable, or can be empirically ascertained. These inherent variances may need to be fixed, or nature is manifestly more non-classical than expected.     

Rapid and flexible laser marking and engraving of tilted and curved surfaces

We present a novel method for rapid and flexible laser marking and engraving of tilted, curved and freeform work-piece surfaces. The method is based on integrating a three-dimensional (3D) laser measurement system into a 3D laser marking system. We use the same laser source and optics for measurement and processing with a minimum of additional hardware components. A low power CW laser regime is used to measure the 3D shape of a work-piece surface while a high-peak power-pulsed laser regime is used for processing. The acquired 3D surface data are used to determine the 3D trajectory of the processing beam focus. Neither the 3D shape of the work-piece nor its orientation needs to be known in advance as long as the processed surface lies within the working range of the 3D laser processing system. This eliminates the need for exact work-piece positioning before processing and substantially improves processing flexibility (allowing, e.g. variations in work-piece shape or/and orientation from mark to mark). This paper discusses key issues concerning an implementation of the method and presents typical examples of markings and engravings, which demonstrate the advantages of the method with respect to the existing industrial 2D and 3D laser marking and engraving methods. The method can also be applied to flexible laser structuring and microprocessing of curved surfaces.     

Spectroscopy and Photophysics of Iso- and Alloxazines: Experimental and Theoretical Study

We present a systematic study of the effect of methyl substitution on iso- and alloxazines in acetonitrile solutions. Substitution patterns have profound effects on both spectral and photophysical properties, with fluorescence quantum yields varying by more than an order of magnitude. TD-DFT calculation were used for the first time to correlate electronic structure changes with the substitution patterns, with good agreement between calculated and theoretical band positions and oscillator strengths. Both n-pi* and pi-pi* states in these compounds are predicted, with the oscillator strengths indicating that only the pi-pi* states should be observable in the absorption spectra. Substitution patterns are shown to be responsible for energy order inversion between these states.     

Geometry and Elasticity of Strips and Flowers

We solve several problems that involve imposing metrics on surfaces. The problem of a strip with a linear metric gradient is formulated in terms of a Lagrangian similar to those used for spin systems. We are able to show that the low energy state of long strips is a twisted helical state like a telephone cord. We then extend the techniques used in this solution to two–dimensional sheets with more general metrics. We find evolution equations and show that when they are not singular, a surface is determined by knowledge of its metric, and the shape of the surface along one line. Finally, we provide numerical evidence by minimizing a suitable energy functional that once these evolution equations become singular, either the surface is not differentiable, or else the metric deviates from the target metric.     

Nano and micro-scale fluid and plasma dynamics: present and future applications

In this letter, we illustrate the importance of fluid dynamics research by considering two particular areas of study: nano- and micro-scale fluid and plasma dynamics. We show how improved scientific knowledge of nano- and micro-fluid dynamics can significantly enhance our future. Application is also discussed regarding environmental aspects.     

激光跟瞄仿真系统及两种跟瞄方法

基于OpenGL和大气传输光学分析的3维全数字仿真是激光跟瞄系统的重要研究手段。为提高跟踪和瞄准精度,从激光跟瞄仿真系统整体出发,研究了目标成像中的投影变换、成像与跟踪的关系、高精度跟踪现有算法的控制过程仿真等内容,并提出了基于大视口、目标大气传输图像序列的跟瞄仿真技术。说明了仿真系统中跟瞄精度分析的特点。就某仿真场景,设计了"头部顶点"和"两点提取"两种跟瞄方法,在不同大气湍流条件下得到了它们的跟瞄精度,说明应用该激光跟瞄仿真系统,能够预先设计、测试和验证一些跟瞄方法,帮助进行算法分析和改进,从而提高工作效率和节约成本。