论抵押权与留置权的竞合

抵押权与留置权的竞合是由同一财产成为不同法律关系牟客观造成,关于这两种担保物权并存时谁优先受偿的问题,法律无明文规定,本文通过对学理上的两种观点进行分析比较。指出了各自存在的缺陷,从探寻抵押权与留置权的竞合的原因入手,找出了解决冲突的途径。     

具有Holling-Ⅱ型时滞捕食系统正周期解的存在性

研究了一类具有功能性反应(Holling-Ⅱ)的时滞捕食系统。利用重合度理论证明并得到了系统正周期解存在性的充分条件。     

一类Duffing型时滞微分方程的周期解

考虑Duffing型方程ax’’(t) f(x(t))x’(t) bx(t) g(x(t-(t)))=p(t),用重合度理论,获得了此方程至少存在一个2π周期解的充分条件。     

命运的意志与理想的光辉--《城堡》与《雷雨》的精神契合

《城堡》和《雷雨》穿透了对偶然的个人际遇与具体的历史时段、具体民族的感受,直指个体生命与人类历史的终极,从而达到精神上的契合:理想虽然受制于命运的意志,但理想本身却不会消失,并且闪耀着美丽的光芒。     

Gross Motor Coincidence Timing by Children with Learning Difficulties and Children Matched on Mean Chronological and Mental Age

Abstract

This study examines the learning by children with learning difficulties of a gross motor coincidence timing task, compared with that by children of average intelligence of an equivalent chronological age and mental age. The gross motor coincidence timing response was seen as representative of a particular task category. Using a task classification scheme based on the mobility or otherwise of the environment, the total body and the body parts, the two movement responses required of the children were seen as characteristic of the “environment in motion, total body in motion, body parts stationary” class, the difference between the two lying in their ballistic or controlled nature. The findings suggest that, as a group, the children with learning difficulties perform at a level lower than either of the matched groups. Differences in the nature of the errors for the two response patterns were particularly evident for the group of children with learning difficulties.     

一类具多偏差变元的高阶微分方程周期解

利用Mahwin重合度理论研究了一类具多偏差变元的高阶微分方程的周期解问题,得到了周期解存在性的充分性结果,推广和改进已有的结果.     

一类高阶非线性泛函微分方程的周期解

利用重合度理论研究一类高阶时滞泛函微分方程周期解问题,得到了周期解存在性的若干新的结果,推广了已有的结果.     

Plot and Pattern(Ⅰ) In Oliver Twist by Charles Dickens

假若说情节是小说家的灵魂,那么模式就是灵魂起飞的双翼,而适度巧合的运用更增添了灵魂活现的筹码.查理·狄更斯的著作<雾都孤儿>在这方面表现得淋漓尽致.     

两条直线位置关系的探求

给出了判断两条直线位置关系的一个等价条件.利用等价条件,可简化解题过程并能有效地避免在解题时丢解的现象.     

跳远起跳速度研究综述

采用文献综述法,对影响跳远起跳速度的有关因素进行分析。结果表明：提高助跑速度和助跑最后二步节奏,有利于加快起跳速度;适宜的阗地角是加大上板速度、获得较大冲击力的前提;较早的蹬伸能获得较长的重心工作距离,缩短起跳时间,提高起跳效果。