查询词典 dissertation

Self-adapting control method for a kind of rotary missile抯 automatic pilot is studied in this dissertation.

本文主要针对某型自旋转导弹的自动驾驶仪研究了自适应控制方案。

ABSTRACT Some essential problems in learning-based automatic text categorization have been studied in this dissertation.

本文对基于学习的自动文本分类中的若干基本问题进行了深入的研究，取得了一系列研究成果。

The aim of this dissertation is to develop a measure system of dispersion and interaction impedance, which has high measure precision and automatism.

因此，研制出一套高度自动化、具有较高测量精度的冷参量在线测量系统就成为行波管科研生产单位的迫切需求，这也是本论文的工作目标。

In this dissertation, we focus on researching the application of NCD system in the automobile insurance markets.

在非寿险精算中，经验估费系统占有相当重要的位置。

This dissertation summarized the design and developement on newgenerated real-time visual system of automobilism simulator.

本文总结了汽车驾驶模拟器新一代实时视景仿真系统的设计和开发工作。

Provable Security is a formal method for proving the security of cryptographic schemes, in which the difficulty of breaking a particular scheme is formally related to that of solving a widely believed computational hard problem. Provable security has already become an important theme of theoretical researches in modern cryptography. This dissertation investigates the provable security of public-key encryptions and hybrid encryptions of asymmetric and symmetric encryptions. This includes the various formal security notions and the constructions can be proved to achieve them. Among the constructions, hybrid encryptions are themselves an important way to obtain public-key encryption schemes with chosen ciphertext security. The main results are as follows:(1) The one-wayness of the trapdoor one-way function in NTRU depends on the randomness of the session key, which is different from previous ones. Based on this observation, a new kind of trapdoor one-way function, trapdoor one-way functions with an auxiliary random variable is proposed.

可证明安全性是一种证明密码学方案安全性的形式化方法，它将密码学方案的安全性归约为公认的计算难题，已成为现代密码学领域中理论工作的主线，本文主要研究公钥加密与单双钥混合加密的可证明安全性，这包括它们的各种形式化安全性定义以及达到这些安全性定义的方案构造，而单双钥混合加密本身也是一种构造选择密文安全公钥加密的重要方法，本文得到的主要结果如下：(1)在研究NTRU公钥加密的特殊性基础上，对于公钥加密的陷门单向函数加密模型进行了扩展，提出了具有辅助陷门单向函数的概念，并将其扩展到多元的情况，讨论了可能的密码学用途。

In April, your PhD dissertation A New Determination of Molecular Dimensions measured the size of atoms (and also Avogadro's number), making the theory of atoms more concrete, particularly the kinetic theory of heat, based on an analysis of data about solutions of sugar in water. While atoms had been proposed 2500 years ago and were widely believed in, you helped provide evidence for them.

今年4月份，完成博士论文"关于分子大小的一种新的测定方法"，测量了原子的大小，使得原子论具有了更加坚实的基础…特别是，还通过研究糖在水中的溶解度数据，发展了热学的原子论理论基础…虽然"原子论"在2500年前就有人提出过并被世人广泛相信，你却提供了比较好的证据。

In this dissertation, the axially extracted vircator with feedback is investigated by means of particle-in-cell simulation with some of the results analysed theoretically.

在粒子模拟方面，研究了轴向提取反馈式虚阴极振荡器的振荡频率与腔长的关系，分析了腔体的谐振特性。

In the doctoral dissertation,which focuses in lattice-ordered preferencestructure theory and lattice-ordered decision-making theory,lattice-orderedpreference relation displaces complete preference relation in order to makecharacterization of preference structure general,and in order to propose a newthinking of weakening completeness axiom,and also in order to put forward atheoretical base for setting up the rational behavior axioms and utility theorywith lattice-ordered preference structure.

本文有关格序偏好关系理论的研究将Von Neumann-Morgenstern理性行为公理中偏好关系的全序描述推广为格序描述，使得对偏好结构的描述更为一般化，并且为弱化公理体系中完全性或连通性假使提供一条新思路，为建立基于格序理论的理性行为公理及其相关的效用理论提供理论依据。

In view of the background, an axisymmetric finite element electro-thermo-mechanical model is developed in this dissertation.

针对点焊理论研究和发展点焊实时质量控制的需要，本文建立了点焊熔核形成过程的轴对称有限元电热力学模型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。