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Most of the frequency（1455.99 ± 187.09 Hz to 3534.13 ± 301.53 Hz）of songs in Chinese bulbul are overlapped with environment noise（under 3000Hz）. In order to study the impact of urban noise on the song performances of Chinese bulbul, this study was carried out at Taichung urban areas focusing on the difference of dialects between different environment noise habitats（Shu Yi Area, Chung Hsing University, Taichung Metropolitan Park） from March to November 2007. In addition to the 3 study sites, I sampled another 6 sites （Fengle Park, Taichung Park, Botanical Garden, Art Boulevard, Ren De Village, Tong Lin Village）to find out the differences of songs frequency resulted from different environment noise habitats.

为了探讨都市噪音对白头翁鸣唱的影响，本研究於2007年3至11月以微地理尺度，探讨台中市都会地区三个不同程度噪音干扰的栖地环境(树义地区、中兴大学、台中市都会公园)之间白头翁歌曲的方言差异；另加入六小样区（台中市丰乐公园、台中市台中公园、台中市国立自然科学博物馆植物园区、台中市国立美术馆绿园道、台中县乌日乡仁德村、台中县雾峰乡桐林村），探讨在不同的噪音值干扰下，有关白头翁歌曲音频的表现。

On the base of discussing the legal attributes of the beneficiary's cancellation, using for reference about the legislation experiences of England, America, Japan, Taiwan and so on, analyzing the shortages of the beneficiary's cancellation right in our trust law, and bringing forward some modification advices about the clause 2, clause 22, and clause 49 in our present trust law, in order to protect the beneficiary's benefits well and promote the trust industry's vigorous development in our country.

在探讨受益人撤销权的法律属性的基础上，借鉴英国、美国、日本、台湾等几个主要国家和地区关于受益人撤销权制度的立法经验，分析我国信托法中对受益人撤销权制度规定的不足，并提出对现行信托法第2条、第22条、第49条的修改建议，以期能更好的保护信托受益人的受益权，促进我国信托业的蓬勃发展。

We can attains some conclusions in this paper, Nozick emphasizes the rightness of property holding and historic justification of the origin of property, Rawls highlights on the right of equality and cares for people who live in inferior position. Nozick stresses the ownership of natural development of property "holding" and advocates the theory of "the minimal state". In order to arrive at goals of social justice and good, Rawls tries to reduce the gap in social and natural chanciness, and insists on the redistribution of property under the interposition of the public reason and public power.

我们可以获得一些结论：诺齐克看重财产持有的正当性和财产来源的历史意义，罗尔斯则按照"两个正义原则"对公共资源进行分配并关怀弱势群体；诺齐克强调财富"持有"的自然生成的所有权并主张干预财富分配的"最弱意义国家"理论，罗尔斯则试图减轻自然和社会"偶性"方面的差距，强调通过公共理性和公共权力来干预财产的分配和再分配，以期达到社会的公正与善。

Boundary conditions on the surface of an airfoil are implemented by using their first-order expansions on the mean chord line.

提出了一种应用近似边界条件在固定的笛卡尔网格上求解非定常欧拉方程来解决气动弹性的方法。

Based on the analysis of the single-ring resonator, both the transfer functions of parallel-coupled structure and the ones of series-parallel structure in multiple-ring high order resonators are derived using the transfer matrix method. And the influences of the length of straight waveguide between rings, coupling coefficients between rings, coupling coefficient between straight waveguides and ring, the number of rings and the radii of rings on spectral response are also analyzed. Spectral response at drop channel with maximally flat response pass bands and sharper roll-off could be achieved by optimizing these parameters, so as to improve the performance of output spectral response.

在分析单环结构的基础上，利用传输矩阵法，推导了多环并联和多环串联两种耦合结构的高阶谐振器的传输函数公式，分别分析了并联环间直波导的长度、串联环间耦合系数、环与直波导间的耦合系数、环个数和环半径对相应结构输出特性的影响，通过优化这些参数实现下话路输出光谱具有通带的最大平坦性和过渡带良好的滚降特性，从而达到改善其输出光谱特性的目的。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

Dilution the effect of copepod addition incubations were conducted in Xiamen Baozhu waters on November 16 and 27 in order to study the impact of microzooplankton and copepods grazing on the growth of phytoplankton.

2005年11月16日和27日，运用稀释法和桡足类添加法，对厦门宝珠屿海域小型浮游动物及桡足类的摄食对浮游植物生长的影响进行了研究。

In order to understand the ecological meaning of the microbiotic soil crust in agriculture and animal husbandry of the North interlocks and takes,this research took Yanchi of Ningxia as an example to carry on the survey of soil crust and vegetation,and go on the test of infiltration with crust and no curst.

为了解我国北方农牧交错带生物结皮的生态意义，本文以宁夏盐池为例，采用样线调查法进行结皮及植被调查，并在有结皮和无结皮覆盖两种情况下进行入渗试验。

In order to improve the operation of the plant equipment and the reliability of economy, the paper thermal economic evaluation of the study, in a cycle function on the basis of the theory of the matrix model based on the thermal analysis method the use of mathematical software MATLAB the corresponding generic calculation procedure, and use VB establishment of display interface Calculation of the power plant thermal system hot economy.

为了提高电厂设备的运行经济性以及可靠性，本文以热经济性评价为研究课题，在以循环函数法为理论基础上提出了基于矩阵模式的热力系统分析方法，利用数学软件MATLAB编制了相应的通用性计算程序，利用VB编制了显示界面，计算电厂热力系统的热经济性。

Work in this paper focuses on the data mining from chromatographic retention index data. A retention index database that contains about 50000 records of retention index is firstly established. Projection pursuit technique is then utilized to do data mining upon the data in order to find out some valuable information about the relationship between the retention indices and structural descriptors. A novel algorithm for projection pursuit is developed in this work. Samples of alkane, alkene and cycloalkane are investigated.

中文题名化学数据挖掘新算法和定量构性关系基础研究副题名外文题名 New methodology in chemical data mining and foundational research on QSPR 论文作者杜一平导师梁逸曾学科专业分析化学研究领域\研究方向化学计量学学位级别博士学位授予单位湖南大学学位授予日期2002 论文页码总数115页关键词定量构性关系化学计量学数据挖掘馆藏号BSLW /2003 /O6 /2 化学数据挖掘正逐渐引起化学家们的关注。

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。