不连续地

Chapter 1 gives the background,current research process of relatedproblems and summarizes this thesis\'s work.In chapter 2,we study the Brownian motion with holding and jumping on the boundary.We use the resolvent method to obtain the infinitesimal generator because the domain of the infinitesimal generator is essentially the same as the range of the resolvent.Knowledge of this range and of the differential operator determines uniquely the infinitesimal generator.Since the semigroup generated by the DHJ is not strongly continuous,to use the nice property of strongly continuous semigroup in analytic theory,in chapter 3 we show that the dual is strongly continuous and derive ergodicity through spectral radius formulas and finally obtain the ergodic theorem by duality. In chapter 4,we discuss a class of a more general process---one dimensional Feller diffusion proposed by W.Feller in 1954.The Feller diffusion allows the possibility of jumps from boundary to boundary,not only from boundary to the interior.We give the stationary distribution of this process.

具体地，本文的结构如下：第一章给出了问题产生的背景，研究现状及本文的主要工作；第二章研究了在边界上逗留后随机跳的布朗运动，我(来源：3dABC论文网www.abclunwen.com)们用预解算子的方法得到其无穷小生成元，因为无穷小生成元的定义域本质上就是预解算子的值域，知道这个值域和微分算子形式就能唯一地决定无穷小生成元；由于DHJ过程产生的半群不是强连续的，为利用强连续半群的一些漂亮性质，在第三章中我们证明其对偶半群是强连续的，然后由谱半径公式得到遍历性并且最后由对偶得到遍历定理；第四章讨论了Feller在1954年引入的更广的一类过程----一维Feller扩散过程，Feller扩散过程允许有从边界到边界的跳发生，即不仅仅局限于从边界到内部的跳，在这一章中，我们给出了一维Feller扩散过程的平稳分布；在第五章，我们讨论了一些相关的问题，给出了DHJ过程对应的PDE问题及特征值与收敛速度的关系。

Numerical tests show that incident wave train can be continuously generated from the source region without being affected by reflected waves.

通过在计算域内设置一造波源造波，边界用海绵层消波来克服现有吸收式造波理论的缺陷，数值试验表明源项能连续地产生入射波浪而不受直堤产生的反射波的影响。

We obtain the conditions of asymptotical stability of the pest-eradication periodic solution and permanence of the system.

在第四章中，应用天敌助增(即天敌的人工繁殖和释放)的方法，建立了在固定时刻释放天敌的具有一般功能性反应的三种群的食物链模型，并系统地研究了系统在释放天敌这种外在的不连续受迫作用下的动力学性质，得到了害虫根除周期解存在性和渐近稳定性，以及系统持续生存的条件。4。

It applies Conditional Logit methodology, which is more appropriate and correct than Multinominal Logit in analyzing the impact of policy on voting behavior.

有别於国内多数的实证研究，本文推论出条件式胜算对数分析是所有不连续选择模型中，较正确地分析空间投票理论的一项工具。

In order to simulate evapotranspiration rate continuously, a proper stomatal model is needed.

要连续地模拟冠层的蒸散量，必须有一个合适的气孔模型，而目前的气孔模型还不能令人满意。

When broadcasting, video signal is transformed to be frame information, the speed that restricts 30 with every second is umbriferous go up to monitor, make human eye thinks it is moving uninterruptedly continuously.

播放时，视频信号被转变为帧信息，并以每秒约30幅的速度投影到显示器上，使人类的眼睛认为它是连续不间断地运动着的。

He juggled the ball with his feet and head for 15 minutes nonstop.

他连续15分钟不间断地用头和脚颠球。

He is unable to work for long stretches.

他不能连续地工作。

At present, the sudden changes of properties of LDs at the onset of lasing were studied theoretically.

目前，我们对激光器阈值附近物理特性的不连续在理论上作了深入地研究。

The ability of a system to perform its function continuously for a significantly longer period of time than the reliabilities of its individual components would suggest.

系统在相当长的时间范围内连续不中断地执行其功能的能力，这个时间段要长于其独立组件所支持工作的时间。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。