循环域

Critical and finite asymptotic value of f andlimitpoints of these value of〓are all called singularity of〓.

设〓，其中〓是有理函数，p是多项式，则f的任何一个Baker域循环一定含有〓的奇异点。

Mo isotopic signatures in sediments can be used as an indicator for redox conditions of paleo-environment and corresponding paleo-oceanography. Therefore, molybdenum isotopes can be used as a powerful tool for understanding the redox conditions of local or regional depositional environment, the biogeochemical cycle of sulfur or carbon, and the geochemical evolution of ancient oceans.

沉积物中的Mo同位素既能指示古沉积环境的氧化还原条件，也能够指示与之相关的古海洋地理环境，因此，Mo同位素是了解局域至区域沉积环境的氧化还原条件、硫和碳地球化学循环及古海洋化学演化等的强有力工具。

A PN based Channel Estimation algorithm using circular correlation is proposed, and is implemented in Single Carrier Frequency Domain Equalization system.

提出了一种基于伪噪声序列循环相关的信道估计算法，并将之应用于单载波频域均衡系统中。

Then gives out an optimised convergent algorithm and describes the system robustness by a closed curve on frequency domain, in which all possibte frequency responses.

提出一种计算过程可以迭代循环的最优收敛算法，并在频域复平面上给出描述系统鲁棒性的包络曲线，所有可能的、随系统不确定性而变化的频率响应都落在该曲线所包围的闭域内。

Prange first began to study cyclic codes over finite field in 1957 and Berkelamp first began to investigate negacyclic codes over finite field in 1968,but the codes over finite rings didnt received much attention until the 1990s due to the works of Nechaev in 1991 and Hammons in 1994,which showed that well-known nonlinear codes such as Kerdock and Preparata codes are constructed from linear codes over finite rings.

Prange(1957)和Berkelamp(1968)分别首先开始研究有限域上的循环码和负循环码，直到上世纪90年代，Nechaev(1991)和Hammons(1994)通过有限环上的线性码构造出著名的非线性码如Kerdock码和Preparata码，有限环上的码才受到广泛关注。

We present linear codes over finite fields with Mannheim weight and prove that those codes can correct one error taken from a cyclic subgroup of the multiplicative group of finite fields, which provide an algebraic approach in coding modulation.

最后讨论了有限域上的Mannheim线性纠错码，证明了当错误取值于有限域乘群的一个循环子群时，面向多维信号的线性分组码可以纠单个错并为码调制提供了一种代数渐进方法。

a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.

摘 要：通过实际测量给出低压电力线的信道模型，在此基础之上提出了利用循环前缀对信道进行估计的方法，即在梳状导频模式时，使用导频获得导频子信道频率响应后，对其在频域方向进行插值得到数据子信道响应，在其后没有导频的序列的数据周期内，使用循环前缀对信道进行估计，从而起到改善系统误比特性能的目的。

He referred to the fact that the real understanding approaches to a kind of the hermeneutic circulation, and the process of dialogue. Because we always take our own prejudgement or the anticipated significance to project into things and different cultures, we can modify our prior interpretation through the Fusion of Horizon, and bring the new understanding.

而真正的理解是一种接近诠释循环、对话的历程，因为我们总会带著自身的立场或预期意义的投射来理解事物与不同的文化，但是透过视域融合的激荡过程中，我们可以不断地修正自己原先认识的意义与视域内容，而有新的理解。

In order to obtain the global best result, the starting point is chosen at random and rotatively in the feasible region, and the optimization toolbox of MATLAB is employed. Then the minimum is searched again and by means of some rotations the global heat result is achieved.

为获得全局最优解，提出了在可行域内随机循环给定初始点，采用MATLAB工具箱优化计算，在优化结果中二次搜索极小值的方法，经过少量循环即可求得全局最优解。

Last, based on the rumpling mechanism of elastic film on elastic-plastic metal layer, the evolution of oxidation localization area was simulated numerically

最后，基于在循环载荷作用下，附着在弹塑性金属基体上弹性薄膜的起伏机制，对循环氧化条件下，热障涂层氧化局域化区域的演化进行了数值模拟，对模拟结果和实验数据之间的差异进行了分析。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。