查询词典 explicit difference scheme

Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

The cheat-proof method in threshold secret sharing scheme is researched. The threshold secret sharing scheme is integrated with RSA and one-way function. And the RSA and one-way function are fully utilized to verify the validity of data.

对门限秘密共享体制中的防欺诈措施进行了研究，将门限秘密共享体制与RSA与单向函数相结合，充分利用RSA和单向函数进行数据合法性的验证。

Adaptive weighted scheduling scheme to provide fair excess bandwidth allocation among service classes: Current fixed weighted scheduling in DiffServ can not respond to the changes of traffic load cither provide fair bandwidth to each flow in AF and BE services. This thesis proposes an adaptive scheduling scheme, which can be combined to any weighted scheduling algorithm.

支持多服务队列间带宽分配公平性的自适应加权调度机制：针对固定权值调度在网络负载发生变化时不能为各服务队列提供公平带宽分配的问题，本文提出了一种可与各种加权调度算法联合部署的加权调度机制。

Applying partition of positive integers and Anzahl theorem of subgroups of classical groups, a class of authentication codes was obtained and all parameters of this scheme were computed. Simultaneously, supposing that the secret key was chosen according to the uniform probability distribution, security analysis of the scheme was given.

利用正整数的无序分拆及典型群子群的计数定理得到了一类认证码，计算出了全部参数，并给出了密钥等概率选取时的安全性分析。

Analyzed the similarity between scheme solving problem and traveling salesman problem, the scheme solving problem for conceptual design is transformed into an optimal path problem in combinatorial optimization, where the dynamic programming based solution space model and the longest path based optimization model are developed.

摘要通过分析概念设计方案求解问题与旅行商问题的相似性，将方案求解问题转化为组合优化的最优路径问题，建立了基于动态规划的解空间模型和基于最长路径的优化模型。

A hardware scheme of a multi-channel GPS signal simulator based on DSP and FPGA is proposed in this paper.The basic framework of hardware system is introduced compendiously,and the structure of software and the program flows based on the hardware are presented in detail.The feasibility of this scheme is verified finally.

立足于GPS卫星信号仿真技术，提出了基于DSP+FPGA的多通道GPS卫星信号仿真器硬件设计方案，概略介绍了硬件系统的基本架构，详细给出了基于此上的软件结构和程序流程，最后通过实验验证了该方案的可行性。

However, the two schemes are not conflicting, the second scheme is developed on the basis of the first one. So it is very helpful to implement the first one for the latter one, because the project is componential, we can develop the component step by step to the first scheme and gradually build up the distributed GIS.

但是，这两种方案并不冲突，后者以前者为基础，实现前者，对后者有极大的帮助，并且由于设计的构件化，可以随着技术的不断发展和完善，逐步地向前者添加有关构件，实现分布式GIS的渐进发展。

A compound control scheme combining detaching Proportion and Integral control with Model Reference Adaptive Control based on Liapunov stability theory was formulated, which is used on the plant of direct driving electric-servo-actuator. This scheme combined the good property of each algorithm, such as good dynamic property of the PT and strong anti-disturbance ability and good robustness of MARC.

以直接力驱动电动舵机为被控对象，提出了一种分离比例－积分控制与基于李稚普诺夫稳定性理论的模型参考自适应控制相结合的复合控制方案，该方案充分结合了分离PI控制动态性能好和自适应控制抗干扰能力强、鲁棒性好等优点。

Using the technologies of DNA synthesis, DNA clone, PCR and DNA chip and the theory of computational complexity, an encryption scheme is formed. In the scheme, encryption is to confect a specially designed DNA mixture and decryption is the hybridization of DNA sequances on a DNA chip.

利用DNA合成技术、DNA克隆技术、PCR扩增技术以及DNA芯片技术，结合密码学的计算复杂度理论，提出了一种基于DNA技术的加密方法。

In the connectivity and security, the result of our scheme is better than preceding scheme.

跟之前的方法比较，在连结率及安全性上我们的方法有较好的结果。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。