共查询到19条相似文献,搜索用时 62 毫秒
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开展专业课程的思政建设是当今教育领域的一个重要的研究问题,本文结合物理学专业的电动力学课程进行课程思政建设的研究和实践,有机结合课程内容和特点,挖掘课程思政元素和切入点,通过教学实践初步取得教学效果,对理科专业课程思政建设起到积极的借鉴和推动作用,真正做到课程育人,发挥课程应有的作用,并提出总结和展望. 相似文献
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对电动力学教学现代化问题提出了一种构想:在结构和内容上,用现代化教学和学科观点调整课程结构,精简经典,加强近代,教学方法上,加强渗透式,加强能力培养,加强现代化教学手段。 相似文献
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对电动力学教学现代化问题提出一种构想:在结构和内容上,用现代化教学和学科观点调整课程结构、精简经典、加强近代;教学方法上,加强渗透式、加强能力培养、加强现代化教学手段. 相似文献
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Predicting the flame shape, its stabilization process, and pollutant emissions in practical combustion devices requires to incorporate complex chemistry features. As detailed chemical schemes are too voluminous for practical numerical simulations, tabulated chemistry techniques have been proposed to account for the complexity of kinetics in turbulent flame simulations. Unfortunately, the size of these databases may become a crucial issue for efficient implementation on massively parallel computers. A reduction strategy that takes advantage of self-similar properties of tabulated chemistry is proposed for turbulent combustion modeling. A reduction of the database size by a factor of 1000 is achieved. This procedure is successfully applied to a RANS simulation of a turbulent jet flame. 相似文献
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We propose a novel measure to assess causality through the comparison of symbolic mutual information between the future of one random quantity and the past of the other.This provides a new perspective that is different from the conventional conceptions.Based on this point of view,a new causality index is derived that uses the definition of directional symbolic mutual information.This measure presents properties that are different from the time delayed mutual information since the symbolization captures the dynamic features of the analyzed time series.In addition to characterizing the direction and the amplitude of the information flow,it can also detect coupling delays.This method has the property of robustness,conceptual simplicity,and fast computational speed. 相似文献
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Eringen A. Cemal 《ARI - An International Journal for Physical and Engineering Sciences》1998,50(3):169-179
A R I - A continuum theory is developed for anisotropic microstretch and micropolar fluids subject to electormagnetic interactions. Balance laws and thermodynamically admissible constitutive... 相似文献
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Eugene O. Kamenetskii 《Annalen der Physik》2020,532(3):1900423
The relationship between magnetoelectricity and electromagnetism is a subject of a strong interest and numerous discussions in microwave and optical wave physics and material sciences. The definition of the energy and momentum of the electromagnetic (EM) field in a magnetoelectric (ME) medium is not a trivial problem. The question of whether electromagnetism and magnetoelectricity can coexist without an extension of Maxwell's theory arises when the effects of EM energy propagation are studied and the group velocity of the waves in an ME medium is considered. The energy balance equation reveals unusual topological structure of fields in ME materials. Together with certain constraints on the constitutive parameters of a medium, definite constraints on the local field structure should be imposed. Analyzing the EM phenomena inside an ME material, the question “what kind of the near fields arising from a sample of such a material can be measured?” should be answered. The visualization of the ME states requires an experimental technique that is based on an effective coupling to the violation of spatial as well as temporal inversion symmetry. To observe the ME energy in a subwavelength region, it is necessary to assume the existence of first-principle near fields—the ME fields. These are non-Maxwellian near fields with specific properties of violation of spatial and temporal inversion symmetry. A particular interest to the ME fields arises in studies of metamaterials with “artificial-atoms” ME elements. 相似文献
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P. K. Anastasovski T. E. Bearden C. Ciubotariu W. T. Coffey L. B. Crowell G. J. Evans M. W. Evans R. Flower A. Labounsky B. Lehnert M. Mészáros P. R. Molnár J. K. Moscicki S. Roy J. P. Vigier 《Foundations of Physics Letters》2001,14(4):387-393
It is shown that the principles of general relativity as developed by Sachs [1] can be used to explain the principles of the motionless electromagnetic generator (MEG), which takes electromagnetic energy from Riemannian curved space-time and in consequence outputs about twenty times more energy than inputted [2]. Therefore, it is shown in the most general manner that electromagnetic energy can be extracted from vacuum and used to power working devices such as the MEG, devices which are reproducible and repeatable [2]. 相似文献
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光信息科学与技术专业的建设 总被引:1,自引:0,他引:1
就光信息科学与技术专业建设的专业定位、课程设置、学生毕业后的去向等问题发表了个人的看法。介绍了在这方面的一些做法,提供了有关数据,可供同类专业的建设参考。 相似文献
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磁信息存储技术的回顾与展望 总被引:1,自引:0,他引:1
文章介绍了磁信息存储技术的发展背景,简述了磁信息存储工业百年来的发展历史,论述了磁信息存储工业中重大的技术进步与物理学、材料学、电子工程学、机械学、计算机学等各个研究领域之间的关系,从而说明高技术工业的发展是多学科共同努力的结果,但应用磁学对于突破磁存储工业发展中的技术瓶颈起到非常核心的作用;文章还讨论了微磁学与磁信息存储技术的发展互相促进的过程,介绍了与磁信息存储技术相关的国际前沿研究进展,并探讨了磁信息存储技术未来的发展有可能对物理学及相关学科的基础研究提出的挑战. 相似文献
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A. Pautrat A. Daignere C. Goupil Ch. Simon B. Andrzejewski A.I. Rykov S. Tajima 《The European Physical Journal B - Condensed Matter and Complex Systems》2003,33(3):279-284
We report complex impedance measurements in an untwinned YBaCuO crystal. Our broad frequency range covers both the quasi static
response and the resistive response of the vortex lattice. It allow us to characterize the irreversibility line without the
need of any frequency dependent pinning parameters. We confirm the validity of the two modes model of vortex dynamic, and
extract both the surface critical current and the flux flow resistivity around the first order transition Tm. This latter is identified by the abrupt loss of pinning and by an unexpected step of (T) at Tm.
Received 22 November 2002 / Received in final form 17 February 2003 Published online 20 June 2003
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ID="a"e-mail: alain.pautrat@ismra.fr
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ID="b"UMR 6508 associée au CNRS 相似文献