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Secondly, the platform of IPTV set-top box named DM6446 is introduced, and then the AVS video coding standard which is implemented as the video coding standard of IPTV is introduced. The kernel architecture, peripheral devices of DM6446 and the key technique of AVS video coding such as transformation, quantization, intra-prediction, inter-prediction, interpolation, and loop filter is introduced in detail. Thirdly, the system procedures of set-top box which are implemented on the ARM side of DM6446 are introduced in detail. This part focuses on the demultiplex of audio and video data, the design of data interface, the playback of audio and video, and the communication between ARM and DSP. Fourthly, the loop filter algorithm of AVS video coding standard is introduced in full detail, and the optimized procedures of the algorithm on the DSP side of DM6446 are introduced, and then the optimized results are presented. Fifthly, the thesis introduces and analyzes the state-of-art technique of deblocking filter, and proposes a deblocking method, and then the results of proposed method are given. Finally, summarize of this thesis and further development is given.

首先对IPTV技术、视频编解码技术以及去块滤波技术做了简要介绍；然后介绍了IPTV机顶盒的实现平台DM6446，并介绍了该处理器的外围接口和内核结构，同时介绍了作为本IPTV系统视频标准的AVS第二部分视频标准，以及该标准中变换量化、帧内预测、帧间预测、插值和环路滤波等多个模块的算法；接着，详细介绍了机顶盒系统相应程序在DM6446 ARM核上的实现，重点介绍了音视频系统码流的解复用、数据接口设计、音视频的播放以及ARM核与DSP核之间的通信；然后，详细介绍了AVS视频标准中环路滤波算法及该算法在DM6446 C64+内核上的优化，并给出优化结果；然后对去块滤波算法进行了研究并提出了一种环路滤波方案，同时给出了此方案的实验结果；最后总结了本文的工作，并提出了可以改进的方向。

Methods Firstly,by definition it is proved that the minimality of a set is equivalent to the condition that the orbit of every point is dense in that set.

方法首先，利用定义证明一集合是极小的当且仅当每一点的轨道在该集合中稠密。

We get to the conclusion that the function set of DCRBFN is dense in a varible-decomposable function set. The result shows that DCRBFN has excellent approximation ability.

DCRBFN系统的逼近能力分析，我们得到DCRBFN的函数集在变量可分离函数集中稠密的结果，因此DCRBFN具有良好的逼近能力。

On the basis of array model of the Multiple-Input Multiple-Output radar, a universal array model of the Synthetic Impulse and Aperture Radar is constructed and a realization sheme for microwave SIAR with a thinned subarray set for the transmitted array and a dense subarray set for the received array is proposed.

结合MIMO雷达多发多收的特点，建立了微波综合脉冲孔径雷达的阵列模型，并提出该阵列的一种实现方案：发射阵采用稀布子阵集，接收阵采用密布子阵的形式。

Most of the families crowded in the back and south area of the Changjiang River. The three provinces, Kiangsi、 Nanking and Zhejiang, located in the back area of the Changjiang River, are dense set. Kiangsi is the densest place. The two provinces, Fujian and Guangdong, located in the south of the Changjiang River, are vice-dense set.

长江下游流域及以南地区集中了绝大多数谱牒序跋所涉家族，其中长江下游流域的江西、南京、浙江三政区是分布的密集地，以江西为最密集，长江下游以南的福建、广东为分布的次密集地。

Chapter two study iteration of a serial of polynomial, discussed the sufficient and necessary conditions and denseness of the Julia set, the relative random dynamical system is constructed by some high degree polynomial. In addition, it discuss the Mandelbrot set of a kind of polynomial.

本文的第二章主要研究多个函数的特定迭代序列，讨论了高次多项式的随机复动力系统的Julia集的连通的充分必要条件以及稠密性问题，同时还讨论了一类多项式函数的Mandelbrot集。

This produce a non-computable problem between denumerable set and an element of tangibility set, which is referred to as system complexity.

所以本文分析客观世界的特性，尤其是非线性的问题等，试图将现实世界的表征扩大到现实集中，这样产生的一个由可数集到现实集元素之间不可计算的或非能行问题，作为关于系统复杂性定义或界定的问题。

Through the analyzing of several forest ecological benefits,the dependent variable set and the independent variable set were found.

通过对森林多种生态效益的分析，确定了计量森林生态效益的因变量集和自变量集。

In this paper,the rough set theory based on discernibility matrix is applied to derive association rule from web log,and the derived association rule set is used to predict user behavior.

运用基于差别矩阵的粗糙集提取Web日志中的关联规则，并将生成的关联规则集用于用户行为的预测。

Comparison of the predicted value set from the map with the independently collected field sample set showed the derived soil map achieved 82% of accuracy.

通过野外实地验证，将观测值与图中预测值比较，结果显示该方法制图精度在82%左右，具有一定的可靠性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。