少数民族地区大学物理化学教学方法探索

根据长期从事物理化学教学的经验,分析了物理化学教材和物理化学课程教学内容,根据教材和课程的教学要求以及物理化学课程的特点,就如何在少数民族地区大学做好物理化学课程的教学,进行宽、精、细的教育教学,为培养基础知识扎实,素质全面,思维宽阔、广泛,作风认真、细致、负责的基础型和创新型少数民族人才进行了探讨。     

和谐效率理念融入大学化学理论教学的探索

针对工农业生产、日常生活对环境的影响,结合科技前沿,将和谐、效率理念渗透到大学化学相关章节的理论教学中。这既有利于学生对化学知识的掌握和对和谐、效率理念的理解,也能扩大学生的视野,从而促使学生自觉地以实际行动去关心和保护环境,形成科学的生产和生活意识。     

依托科研实验室探索地方高校研究性实验教学的实践

研究性实验教学是培养学生综合实践能力和创新能力的一种新的实践教学模式。其重在培养学生综合运用自身知识体系、积极主动和研究性地获取知识、独立承担某一具体科研任务的能力,使之成为符合社会需求的高级应用型专门人才。在实践教学改革中,地方高校因其自身特点必须寻找一条符合自己的创新发展之路。以具体的教学实践为例,讨论分析了近年来开展研究性实验教学的收获以及教学活动中反映出的一些规律。     

部属6所师范大学化学专业本科课程设置分析

从课程类型的学分分布、专业教育课程设置以及教师教育课程设置等多个维度对6所部属师范大学化学专业本科(师范)培养方案中的课程设置进行统计,并根据统计结果进行了讨论,希望对高师院校课程改革有借鉴意义.     

A Modified Earthquake Model of Self-Organized Criticality on Small World Networks

A modified Olami-Feder-Christensen model of self-organized criticality on a square lattice with the properties of small world networks has been studied. We find that our model displays power-law behavior and the exponent τ of the model depends on φ, the density of long-range connections in our network.     

Self-organized Criticality and Synchronization in a Pulse-coupled Integrate-and-Fire Neuron Model Based on Small World Networks

A lattice model for a set of pulse-coupled integrate-and-fire neurons with small world structure is introduced. We find that our model displays the power-law behavior accompanied with the large-scale synchronized activities among the units. And the different connectivity topologies lead to different behaviors in models of integrate-and-fire neurons.     

Abundance of Asymmetric Dark Matter in Brane World Cosmology

Relic abundance of asymmetric Dark Matter particles in brane world cosmological scenario is investigated in this article. Hubble expansion rate is enhanced in brane world cosmology and it affects the relic abundance of asymmetric Dark Matter particles. We analyze how the relic abundance of asymmetric Dark Matter is changed in this model. We show that in such kind of nonstandard cosmological scenario, indirect detection of asymmetric Dark Matter is possible if the cross section is small enough which let the anti-particle abundance kept in the same amount with the particle. We show the indirect detection signal constraints can be used to such model only when the cross section and the 5-dimensional Planck mass scale are in appropriate values.     

世界采样大会的由来与Pierre Gy采样理论的发展

简单介绍了世界采样大会的由来与Pierre Gy采样理论的产生与发展。重点阐述了Pierre Gy公式和采样理论的涵义与应用,以及化学计量学对采样理论发展的推动和促进作用。同时,采样理论的发展也推动了过程分析技术的应用以及各类先进采样、制样和混样设备的研制和应用。中国作为全球最大的大宗商品进口国和消费国,对采样理论和实践应用有着迫切的需求,将第九届世界采样与混样大会引入中国,必将促进和提升我国采样理论的研究和实践水平,使其更好地为我国大宗商品交易和检验检测市场服务。     

An estimation formula for the average path length of scale-free networks

A universal estimation formula for the average path length of scale free networks is given in this paper. Different from other estimation formulas, most of which use the size of network, $N$, as the only parameter, two parameters including $N$ and a second parameter $\alpha $ are included in our formula. The parameter $\alpha $ is the power-law exponent, which represents the local connectivity property of a network. Because of this, the formula captures an important property that the local connectivity property at a microscopic level can determine the global connectivity of the whole network. The use of this new parameter distinguishes this approach from the other estimation formulas, and makes it a universal estimation formula, which can be applied to all types of scale-free networks. The conclusion is made that the small world feature is a derivative feature of a scale free network. If a network follows the power-law degree distribution, it must be a small world network. The power-law degree distribution property, while making the network economical, preserves the efficiency through this small world property when the network is scaled up. In other words, a real scale-free network is scaled at a relatively small cost and a relatively high efficiency, and that is the desirable result of self-organization optimization.     

大学物理双语教学经验与思考

阐述了开展双语教学的重大意义,大学物理双语课程的特点以及教学方法.最后结合多年双语教学的实践经验及体会,从教材、课件、内容、考试及奖励机制等方面分析了大学物理双语教学发展的现状及改进设想,以期待对推广和深入开展双语教学提供借鉴.