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不公度相及公度-不公度相变:一维情形 被引量:2
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作者 许爱国 王光瑞 +1 位作者 陈式刚 杨展如 《物理学进展》 CSCD 北大核心 1999年第2期109-139,共31页
本文通过FrenkelKontorova(FK)模型评述了凝聚态物理中的一个重要课题:不公度相和公度不公度(CI)相变。论述主要集中在一维情形,对不公度相和CI相变的概念、物理图象、产生机制、研究背景、研究目标和... 本文通过FrenkelKontorova(FK)模型评述了凝聚态物理中的一个重要课题:不公度相和公度不公度(CI)相变。论述主要集中在一维情形,对不公度相和CI相变的概念、物理图象、产生机制、研究背景、研究目标和意义进行了必要的介绍;概述了早期、近期和现代研究过程中一些典型的基本理论和方法;对标准FK模型及原子间势为凸函数的FK模型、经典非凸FK模型、FK模型的量子效应、一维双原子链FK模型、FK模型向二维和三维的推广、CI相变的有限温度效应等专题的研究进展作了概述,并指出了一些有待进一步探讨的课题。 展开更多
关键词 FK模型 一维 不公度 不公度相变 凝聚态
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Common Fixed Point Theorems of Single-valued and Set-valued Mappings in Complete,Convex Metric Spaces 被引量:1
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作者 LIANGJun-qi ZHANGZhi-hong ZHAOLing 《Chinese Quarterly Journal of Mathematics》 CSCD 2003年第3期264-270,共7页
Under the conditions of compatility or sub -c ompatility between a sigle-valued mapping and set-valued mapping, this paper d iscusses the existence of common fixed points for two set-valued mappings and a single-value... Under the conditions of compatility or sub -c ompatility between a sigle-valued mapping and set-valued mapping, this paper d iscusses the existence of common fixed points for two set-valued mappings and a single-valued mapping in complete, convex matric spaces. We extend and develop the main results. 展开更多
关键词 complete convex metric spaces compatible mappings s ub-compatible mappings common fixed point theorems
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A Common Fixed Point Theorem for Weakly Compatible Mappingsin Fuzzy Semi-Metric Space
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作者 U. Rajopadhyaya K. Jha P. Kumam 《Journal of Mathematics and System Science》 2014年第11期720-724,共5页
In this paper, we establish a common fixed pointtheorem for three pairs of self-mappings in fuzzy semi-metric space which improves and extends similar known results in the literature.
关键词 Fuzzy Semi-metric space weakly compatible mapping common fixed point.
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A Common Fixed Point Theorem for Compatible Mappings of Type (K) in Intuitionistic Fuzzy Metric space
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作者 K.B. Manandhar K. Jha 《Journal of Mathematics and System Science》 2015年第11期474-479,共6页
The purpose of our paper is to obtain a common fixed point theorem for two pairs of self-mappings of compatible of type (K) in a complete intuitionistic fuzzy Metric space with example. Our result generalized and im... The purpose of our paper is to obtain a common fixed point theorem for two pairs of self-mappings of compatible of type (K) in a complete intuitionistic fuzzy Metric space with example. Our result generalized and improves similar other results in literature. 展开更多
关键词 Compatible mappings Compatible mappings of type (K) and common fixed point.
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Vulnerability to Flood in the Vietnamese Mekong Delta: Mapping and Uncertainty Assessment
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作者 Van Pham Dang Tri Nguyen Hieu Trung Vo Quoc Thanh 《Journal of Environmental Science and Engineering(B)》 2013年第4期229-237,共9页
The Vietnamese Mekong Delta is located at the end of the Mekong River, one of the 10 largest rivers in the world. It plays an important role, especially in terms of food security for not only Vietnam but also the worl... The Vietnamese Mekong Delta is located at the end of the Mekong River, one of the 10 largest rivers in the world. It plays an important role, especially in terms of food security for not only Vietnam but also the world. However, the Vietnamese Mekong Delta is projected to be heavily affected by: (1) the annual (fluvial) flood, which would be changed in terms of time and spatial distribution after impacts of climate change scenarios (i.e., sharper hydrograph with shorter flood period); and (2) sea level rise. Such combination would result in significant changes of surface water resources, leading to consequent impacts on the existing fanning systems in the Vietnamese Mekong Delta. Therefore, this paper presents a new approach of integrating a one-dimensional hydrodynamic model (ISIS-1 D) with GIS (Geographic Information System ) analyses to: (1) identify priority areas for flood adaptation and mitigation; (2) provide an insight to local decision-makers in the Vietnamese Mekong Delta in changes of future floods. 展开更多
关键词 VULNERABILITY UNCERTAINTY FLOOD Vietnamese Mekong delta.
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基底势函数的无序性对静摩擦力的影响 被引量:4
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作者 杨阳 王苍龙 +2 位作者 段文山 石玉仁 陈建敏 《物理学报》 SCIE EI CAS CSCD 北大核心 2012年第13期31-35,共5页
在二维Frenkel-Kontorova模型中,为了更好地模拟真实的物理系统,采用高斯波的平移叠加作为基底,运用分子动力学模拟方法,讨论了有相互作用的原子平面在公度、不公度两种情况下,原子在无序基底上运动的摩擦机理,以及基底的无序对静摩擦力... 在二维Frenkel-Kontorova模型中,为了更好地模拟真实的物理系统,采用高斯波的平移叠加作为基底,运用分子动力学模拟方法,讨论了有相互作用的原子平面在公度、不公度两种情况下,原子在无序基底上运动的摩擦机理,以及基底的无序对静摩擦力F_s的影响. 展开更多
关键词 摩擦 FK模型 不公度
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