技术物理教学如何面向科技前沿

杨振宇说“物理应该是有血有肉的．应该是与生活、与实验、与应用息息相关，应该是充满时代气息的全新的物理．一句话，应该是活的物理技术物理的生命力在于它可以不断地从日新月异的技术变革中汲取营养．因此，技术物理教育要面向实践，要面向科技前沿．     

论提高现代教育技术与中学物理教学整合效度

新课程改革大大地推进了现代教育技术在各学科教学过程中的普遍应用，促进现代教育技术与学科课程的整合，逐步实现教学内容的呈现方式、学生的学习方式、教师的教学方式和师生互动方式的变革．另一方面，在教学实施中充分发挥现代教育技术的优势，能为学生的学习和发展提供丰富多彩的教育环境和有力的学习工具．现代教育技术在教学中的广泛运用可以说是对传统的教学过程的一个重大的变革，是教学方法、手段上的一次重大的革命，必将对新课程改革产生深远影响．     

纳米光学和生物单分子探测

纳米光学技术展示了纳米级探测本领，同时生物单分子探测所需要分辨尺度也是纳米数量级的，因此在生物单分子探测过程中，纳米光学发挥了巨大的作用．文章介绍了与生物单分子探测技术相关的纳米光学技术，包括量子近场光学探针技术、近场光学成像技术(包括扫描近场光学显微术及全内反射荧光显微术)和激光光钳测控技术及它们在生物单分子探测上的进展，从而在染色、成像、测控三个方面展示了纳米光学技术在生物方面的应用，并对其未来的发展方向进行了展望．     

发光二极管材料与器件的历史、现状和展望

文章介绍了发光二极管材料和器件的研究、开发的历史，概述了发光二极管技术的发展现状和进展．通过与其他类型光源的比较，向读者展示了发光二极管未来的重要地位和光明前景．发光二极管的最近的成就是实现了有色光方面的成功应用．高功率白色发光二极管已开始应用于便携式和特殊照明．而在通用的照明领域要成功地应用发光二极管，则需要通过性能和价格方面的继续突破来实现．     

物理教学技术的发展趋势

广义的教育技术是指为了促进学习，对有关的过程和资源进行设计、开发、利用、管理和评价的理论和实践．狭义地看，我们通常将物理教学技术理解为教学过程中教学媒体的应用．在物理教学中，总要使用一些设备和仪器，这就是物理教学媒体．在传统教学中，广泛使用的是书籍、粉笔、黑板、模型、实物、挂图、教学板．上个世纪，随着电力的普遍使用及电子技术的迅速发展，即电子化社会的到来，在教学中照片、幻灯、连续幻灯片、投影机、实物     

理论与实验的整合--记一堂师生合作完成的教学示范课

乒乓球是中国的“国球”，人人熟悉，个个喜欢，几乎人人会打．但其中的物理原理不一定人所周知．借助这样一个案例，阐述物理学中的转动理论及流体动力学理论，并借助优秀运动员的示范和高速摄影技术的再现，使一般的物理理论教学变得鲜活、生动，易于学生理解和掌握．本案例教学是将物理理论教学和实验进行整合的一个实例．该整合的指导思想是将课内与课外、理论与实验整合，让师生合力来完成．     

浅谈信息技术辅助课堂教学的功能与效益

人类已步入信息时代，信息技术深入到科学、技术、经济、文化、军事、管理等各个领域，翻天复地改变着我们的工作、学习和生活．以多媒体计算机技术和网络通信技术为主的信息技术同样引发了教育领域的变革，使传统的教学理念、方法和手段发生了深刻的变化，显著提升了课堂教学的成效．本文结合笔者两年多的教学实践，简要介绍多媒体计算机技术和网络通信技术在课堂教学中的应用．     

飞秒激光与超快现象(Ⅱ)

文章介绍超快现象研究的新进展，其中在飞秒相干光谱学、强场物理和超快光电子技术等领域的迅速进展，向人们展示了超快现象的真实世界．     

多媒体视频技术在职教物理课堂教学中的运用

在现代教育教学中，随着教育技术不断发展，越来越多的现代化教学手段被应用到教学过程中，教学也不再是单一的模式，而是向着多元化，信息化，网络化的方向转变．正确认识多媒体视频技术的使用，在课堂中合理的运用就显得尤为重要．     

第七届全国中学物理青年教师教学大赛课堂实录正式出版

第七届全国中学物理青年教师教学大赛，经过30个省（市、自治区）层层选拔，汇聚了几年来全国各地在课程标准理念下，中学物理课堂教学改革实验的优秀成果，展示了在课标理念下，广大教师在中学物理课堂教学设计和实践中的创造．每个选手面对陌生的学生、全新的环境，面对几百位同行和专家，按照规定内容、规定时间上课，是原汁原味的课堂教学实况展示．     

T and S dualities and the cosmological evolution of the dilaton and the scale factors

Cosmologically stabilizing radion along with the dilaton is one of the major concerns of low energy string theory. One can hope that T and S dualities can provide a plausible answer. In this work we study the impact of S and T duality invariances on dilaton gravity. We have shown various instances where physically interesting models arise as a result of imposing the mentioned invariances. In particular S duality has a very privileged effect, in that the dilaton equations partially decouple from the evolution of the scale factors. This makes it easy to understand the general rules for the stabilization of the dilaton. We also show that certain T duality invariant actions become S duality invariance compatible. That is, they mimic S duality when the extra dimensions stabilize.     

Boltzmann'sH theorem and the Loschmidt and the Zermelo paradoxes

The Umkehreinwand of Loschmidt and the Wiederkehreinwand of Zermelo have been reexamined. The former paradox depends on the augument that for a dynamical system, upon the reversal of the velocities of all the molecules, theH function retraces its sequence of values so thatdH/dt will change its sign. The latter paradox depends on the argument that theH function returns infinitely close to its value after a Poincare' quasi-period and therefore cannot be decreasing all the time. While the main contention of the two paradoxes is correct, that theH theorem is inconsistent with classical dynamical laws, the arguments there can be considerably simplified and the “paradoxes” answered more directly. If the distribution functionf(q _K ,p _K ,t) is governed by an equation which is time-reversal invariant (such as the Liouville equation for a closed dynamical system), then it can be shown immediately thatdH/dt=0,H=cons. In this case, both paradoxes disappear, but together with them, thedH/dt<0 part of theH theorem also has disappeared, i.e., there is no second law of thermodynamics. Iff(q _K ,p _K ,t) is governed by an equation which is not time-reversal invariant (such as the Boltzmann equation, or the Master Equation for Markovian processes), then (1) there is no argument forf andH(t) to retrace their sequence of values upon the reversal of all the velocities of the system, (2) there is no quasiperiod in whichf andH(t) return to their earlier values. In this case, both paradoxes disappear also, but then one must go beyond classical dynamics in order to maintain theH theorem.     

Design and analysis of the tunnel connecting the beamcorridor and the spectrum hall of the CSNS

There is a tunnel connecting the beamcorridor and the target station in the spectrum hall in the CSNS project. The length of the tunnel is about 20 m. The shielding design of the tunnel is very significant for the persons working in the spectrum hall because the tunnel is not covered by soil for shielding. In order to reduce the dose rate at the exit of the cable ducts, we use the ISIS construction, which is designed with four turnings, as a reference for the tunnel design. The thickness of the shielding is obtained by a simulation with the Monte Carlo Code FLUKA. The result is compared with the data obtained with Moyer Mode and the reliability of the simulation is proved. This paper provides the basis for the design of the tunnel.     

Design and analysis of the tunnel connecting the beamcorridor and the spectrum hall of the CSNS

There is a tunnel connecting the beamcorridor and the target station in the spectrum hall in the CSNS project.The length of the tunnel is about 20 m.The shielding design of the tunnel is very significant for the persons working in the spectrum hall because the tunnel is not covered ed soil for shielding.In order to reduce the dose rate at the exit of the cable ducts,we use the ISIS construction,which is designed with four turnings,as a reference for the tunnel design.The thickness of the shielding is obtained by a simulationwith the Monte Carlo Code FLUKA.The result is compared with the data obtained with Moyer Mode and the reliability of the simulation is proved.This paper provides the basis for the design of the tunnel.     

On the Bose symmetry and the left- and right-chiral anomalies

It is generally assumed that in order to preserve Bose symmetry in the left- (or right-chiral) current it is necessary to equally distribute the chiral anomaly between the vectorial and the axial Ward identities, requiring the use of counterterms to restore consistency. In this work, we show how to calculate the quantum breaking of the left- and right-chiral currents in a way that allows to preserve Bose symmetry independently of the chiral anomaly, using the implicit regularization method.     

Infrared renormalons and the relations between the Gross-Llewellyn Smith and the Bjorken polarized and unpolarized sum rules

It is demonstrated that the infrared renormalon calculus indicates that the QCD theoretical expressions for the Gross-Llewellyn Smith sum rule and for the Bjorken polarized and unpolarized ones contain an identical negative twist-4 1/Q² correction. This observation is supported by the consideration of the results of calculations of the corresponding twist-4 matrix elements. Together with the indication of the similarity of the perturbative QCD contributions to these three sum rules, this observation leads to simple new theoretical relations between the Gross-Llewellyn Smith and Bjorken polarized and unpolarized sum rules in the energy region Q² ≥ 1 GeV². The validity of this relation is checked using concrete experimental data for the Gross-Llewellyn Smith and Bjorken polarized sum rules.     

Symmetries and the mass ratio of the electron and muon

A model of symmetries and gauge interactions relating the electron and muon is considered. The model is based on the U_L(1)?U_R(1)?R_L?R_R group where U_L(1)?U_R(1) denotes the chiral e-μ rotation and R_L?R_R the chiral reflection of the electron field. The invariance under this group is spontaneously broken by the vacuum expectation values of scalar fields. A zeroth-order vacuum is found for which the zeroth-order electron mass vanishes, while one-loop corrections lead to a finite $\text{m}{}_{\mathrm{<mtext>e</mtext>}}\text{mμ}$ ratio. The decay process μ → e + γ is strictly forbidden in this model.     

Causality and Dispersion Relations and the Role of the S-Matrix in the Ongoing Research

The adaptation of the Kramers-Kronig dispersion relations to the causal localization structure of QFT led to an important project in particle physics, the only one with a successful closure. The same cannot be said about the subsequent attempts to formulate particle physics as a pure S-matrix project. The feasibility of a pure S-matrix approach are critically analyzed and their serious shortcomings are highlighted. Whereas the conceptual/mathematical demands of renormalized perturbation theory are modest and misunderstandings could easily be corrected, the correct understanding about the origin of the crossing property requires the use of the mathematical theory of modular localization and its relation to the thermal KMS condition. These new concepts, which combine localization, vacuum polarization and thermal properties under the roof of modular theory, will be explained and their potential use in a new constructive (nonperturbative) approach to QFT will be indicated. The S-matrix still plays a predominant role but, different from Heisenberg’s and Mandelstam’s proposals, the new project is not a pure S-matrix approach. The S-matrix plays a new role as a “relative modular invariant”.