查询词典 entropy

The uniform distribution of phase data and the Rayleigh distribution of amplitude data are investigated and the bit allocation formula is deduced according to the differential entropy of continuous information resource, which points out that the mean of amplitude is the only factor.

进一步研究了相位的均匀分布特性和幅度的瑞利分布特性，由连续信源微分熵定义推导了幅相比特分配的幅度均值公式，指出幅度均值是决定幅相比特分配的唯一因素。

Based on this method, the relation curve was gained in different quadrant division and different compute methods, which between different statuses and entropy of area vector of axle centre trail in quadrant, coincidence degree and coincidence degree standard errors.

分析了在不同象限划分下，不同计算方法得到的信息熵和重合度，以及重合度标准差与状态级别之间的关系曲线。

Information entropy, coincidence degree and its standard errors of axle centre trail quadrant area vector under different bearing states are extracted, the sensibility degree of the different parameters for the bearing states in different quadrant division is analyzed. By modifying the parameter compute method, the sensibility degree is improved.

提取各典型状态下轴承轴心轨迹象限面积向量的信息熵，和多周期面积向量的重合度以及重合度标准差，分析在不同象限划分下，各特征参数对状态的敏感程度，通过改进特征参数计算方法，提高对状态的灵敏度。

After that, the moments were adopted to reduce the dimension of color spatial distribution entropy.

试验结果表明，该方法效果良好，大大提高了图像检索的速度。

To improve the effect of CDCA on dissolving cholesterol gallstone, the water-soluble copolymers as polycarboxylic acid of comb-like copolymers and C_(60)-PCC were synthesized, which being used for modification of CDCA and strengthening effects of CDCA on dissolving the cholesterol gallstones by their entropy-repelled properties of comb-shaped side chains in buffers of phosphate and in model bile.The design theory of polymer was mainly employed to synthesis the conjugate of PCC-CDCA and C_(60)-PCC-CDCA by C_(60), polyoxyalkylene allylalkyldiether and maleic anhydride, which were copolymerized with AIBN as initiator, and then PCC or C_(60)-PCC were reacted with CDCA. The structures of the copolymers and the conjugates of PCC-CDCA and C_(60)-PCC-CDCA were confirmed with IR, TLC and TEM. The dissolving effects and the dissolution kinetics mechanism of cholesterol gallstone was inverstigated in PBS and in model bile of different cholesterol saturated index at pH7.4, including PCC-CDCA or C_(60)-PCC-CDCA.

利用高分子设计理论，以烯丙基聚氧乙烯基醚、顺丁烯二酸酐、C_(60)和CDCA为原料，以偶氮二异丁腈为引发剂，合成具有梳状侧链结构的梳状共聚物-CDCA结合物和C_(60)-梳状共聚物-CDCA结合物，以IR、TLC和TEM法表征共聚物的结构，并在pH7.4的PBS液和不同胆固醇饱和指数的模拟胆汁中进行溶石效果的研究，探讨在PBS液和不同CSI的模拟胆汁中结合物溶解胆固醇结石的效果和溶解动力学机制。

In the system the weighted value for each and every evaluation index is determined by combining the entropy weight with subjective weight so as to make the evaluation more objective and scientific.

采用熵权与主观权重相结合的方法来确定各个评价指标的权熏值，使产品质量评价更具客观性和科学性。

First, an index system of project's priority assessment in software enterprises was constructed, then based on the index system, six steps to assess the project's priority were introduced, in which a method of combining the entropy weight with the subjective weight was applied to confirm the index weight.

从软件项目的特殊性出发，构造了软件企业中项目优先级评估的指标体系，提出了项目优先级评估的过程，在进行指标权重确定时采用客观熵权和主观权重相结合的方法，改变了需要依赖专家意见确定权重的不足。

On the basis of considering all kinds of using conditions, reliability analysis model and indicator evaluation system was introduced. Indexes weight was determined scientifically by using comprehensive evaluation obtained from combining a subjective evaluation weight with objective entropy weight. An effective evaluation of reliability level was made by fuzzy theory.

构建了纯电动轿车用异步电机驱动系统的可靠性分析模型，在综合衡量电机驱动系统使用条件的基础上引入可靠性指标评价体系，将主观评价权值同熵权客观权值相结合确定各指标的权重，并采用模糊理论对其可靠性水平作出有效评价。

There is a complicated no-linear relation of dynamic coupling between regional land use and eco-environment by the common interface of land ecology system, which can be regarded as a composite system with vivid dissipation structure characteristics. The composite system has a balance mechanism of entropy, and evolves in logistic curve.

区域土地利用与生态环境之间存在复杂的、非线性、动态耦合关系，这种耦合关系可以看作是二者以土地自然生态系统为公共界面耦合而成的具有鲜明耗散结构特征的复合系统，其内部存在明显的熵值平衡机制，演化轨迹也呈V型。

The experimental result indicates 2-D Entropy Method of Image Segmentation Based on Chaotic Particle Swarm Optimization algorithm reduces the searching time significantly enhances the convergency factor.

实验结果表明了基于混沌粒子群优化算法的二维熵图像分割法用于阈值寻优减少了搜索时间，提高了收敛率。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。