查询词典 sontag

In our thesis, contents are organized as following In Chapter 1 we present our topic's internal and overseas research situations, theoretical and practical significance, and introduce the research object and contents, and the main contributions of this dissertation. Chapter 2 reviews the development of the stability results for nonlinear systems and some relevant recent results, which include Lyapunov and LaSalle-Yoshizawa theorems for nonlinear systems, and stochastic edition for stochastic nonlinear systems. Sontag's formula for systems affine in control is presented in the frame of CLF. The concepts of disturbance attenuation and the inverse optimality are also explained in this Chapter. In chapter 3 we present the solvable theorem of inverse optimal gain assignment problem, design the inverse optimal controller and the inverse optimal tracking controller for strict-feedback nonlinear continuous systems with unknown time-varing bounded disturbances and constant unknown parameters using an adaptive backstepping algorithm, which are nonlinear, continuous and are easier to realize. These designs are fully systematic and the algorithm can be directly coded in symbolic software. The results of simulation show the effectiveness of the control algorithms.

论文的结构如下：在第1章中，给出了本文研究课题的研究现状、理论意义和实际应用，并介绍了本文的研究对象、研究内容以及主要贡献；在第2章中，针对确定性非线性系统和随机非线性系统，分别介绍了Lyapunov定理、LaSalle-Yoshizawa定理及其随机版本；对仿射系统，在控制Lyapunov函数框架下，给出了Sontag公式；同时给出了非线性系统扰动抑制和逆最优控制问题的基本概念；在第3章中，针对具有未知时变有界扰动和未知定常参数的一类不确定非线性系统，给出并证明了逆最优增益配置可解定理，使用自适应Backstepping算法和均值定理，系统地设计了自适应逆最优控制器和逆最优跟踪器，这种设计方法可同时获得逆最优控制策略和自适应律，简单明了，仿真结果表明该控制算法的有效性，并给出了性能估计。

This is certainly suggestive of the kind of moralistic zeal amongst photographers that Sontag harshly exposed in her 1977 work On Photography.

这使人联系到Sontag在她1977年关于摄影的作品中提到的摄影师的诚恳的讲授。

Susan Sontag, 1933- 2004: One of America's Most Influential Thinkers of the Twentieth Century

Susan Sontag，1933-2004：美国 20 世纪最有影响力的思想家。

Susan Sontag was considered one of the most influential liberal thinkers in the United States during the twentieth century.

Susan Sontag 被认为是 20 世纪美国最有影响的自由思想家。

One critic praised Susan Sontag's writing even though he said he often disagreed with what she wrote.

一名评论家赞誉 Susan Sontag 的写作，尽管他说他很多时候并不同意她所写的。

Susan Sontag completed two master's degrees from Harvard University in Cambridge, Massachusetts.

Susan Sontag 在剑桥的哈佛大学完成了 2 个硕士学位。

Public reaction to Sontag's writings was often divided.

公众对 Sontag 的写作反应经常是一分为二的。

Susan Sontag was different from other social critics and intellectuals.

Susan Sontag 同其他的社会评论家及知识分子不同。

In two thousand, Sontag was accused of copying the work of someone else in her final book, called "In America."

年， Sontag 被指控在她的最后一本书名为"在美国"中抄袭他人之作。

In her later life, Susan Sontag grew tired of writing essays and critical studies.

在她生命的晚期， Susan Sontag 对于写评论及评论研究感到厌倦。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。