查询词典 entropy

The global weak entropy solutions" existence and uniqueness of polytropic gas isentropic dynamics equations" general Cauchy problem has been solved. But, to the structure, property, regularity of solutions which has more physics meaning, there are less results now.

多方气体的等熵动力学方程组的一般Cauchy问题整体弱熵解的存在性及唯一性已经获得解决，但是，对于更具有物理意义的解的结构、性态、正则性等问题，已有的研究成果还不多。

The concept of entropy is applied to define an index on evaluating the abnormal condition. Prediagnosis of machine fault is made using the spectral structure distribution divergence as a criterion, in which the J divergence concept and multi-parameter evalution theory that describe the pseudo distances between the sampling signals and the corresponding standard faulty signals are used.

为此，基于信息熵提出了一个机组起停车过程转子运行状态的评估指标，并在此基础上，为实现机组运行故障早期预诊的目的，进而基于J散度及多参数评估理论，提出了信号频谱结构分布散度的概念，以描述实测信号与机组典型故障信号间的伪空间距离，从而实现了机组运行故障的初步预诊。

The introduction of the concept of biological information entropy of life system is an effective way to quantifiably represent spondylodynia formation.

引入生命系统生物信息熵概念是量化表述人体脊椎病形成的有效方法，控制人体脊柱系统的生物信息熵是预防和整治人体脊椎病的有效途径。

In Chapter 4, using the points of view of dissipative theory, the dissipative structure characteristics of ecological-economic system in the Changjiang River basin is analyzed, the development course and evolution characteristic of the ecological-economic system in the Changjiang River basin is demonstrated, and at last the negentropy sources and the entropy value of the ecological-economic system in the Changjiang River basin is radicated.

第四章运用耗散结构观分析研究了长江流域生态经济系统耗散结构特征，并用耗散结构理论论证了长江流域生态经济系统演变过程与演化特征，最后确立了长江流域生态经济系统的负熵源与熵值。

The emotion entropy is presented to express the resistive capacity of an emotion.

在交通场景里的虚拟驾驶员是最重要的动态元素和智能元素之一。

Then, according to phase space reconstruct technique from one-dimensional and multi-dimensional time series, the quantitative criterion and rule of system chaos which combine neural network, analyses, computations and sort are conducted on EEG signals of five kinds of human consciousness activities. The author finds that statistic results of the determinism computation in time series indicate that chaos characteristic may lie in human consciousness activities, and central tendency measure is consistent with phase graph, so it may become one division way of attractor; approximate entropy of different subjects exists discrepancy; correlation dimension and Lyapunov exponent of different consciousness activities indicate that attractors of human activities are all fractional; nonlinear quantitative criterion and rule, which unites neural network, can distinguish different styles of consciousness activity in principle, and the result of sortation takes on that consciousness activity type of arithmetic is distinguished more easily than that of abstract.

采用一维与多维时间序列相空间重构技术和系统混沌的定量判据准则，结合神经网络，对五种思维作业方式的脑电信号进行了分析、计算与分类，发现确定性计算的统计结果表明人类的意识活动中可能蕴含混沌特性，中心趋向测量(Central Tendency Measure，CTM)与相图吻合较好，可作为EEG吸引子的区分方法之一；功率谱分析反映出单个受试者的各种意识形态的差异很小，但是不同意识活动谱中的活跃频段还是略有差异的；个体之间的近似熵存在差异，同种状态下近似熵大的人可能具有更好的创新性；关联维数和Lyapunov指数的计算结果表明大脑的运动落在具有分维的奇怪吸引子上；非线性量化方法与神经网络相结合，可对人脑思维活动进行较好的分类，并且从分类结果来看数理计算类思维活动较抽象类思维活动有着更好的区分度。

Total entropy and internal energy are used in combustion model to avoid the stoichiometrical assumption.

模型中引入总焓、总内能计算燃油的燃烧，使燃烧可按实际当量比进行，无需引入等当量燃烧假设。

By using an empirical potential of free energy on dsDNA which was obtained experimentally by Strey, a relation between total energy of chip and some factors, such as nanogeometric, physical. chemical characteristics of DNA, geometric dimension, macroscopical mechanical properties of chip, etc was formulated under the consideration of mechanical energy of microcantilever beam, electrostatic energy, configuration entropy, and osmotic energy of gene-layer.

首先，在考虑微悬臂梁机械能和基因层静电能、构型熵、渗透能的情况下，借助Strey通过实验得到的双链DNA自由能的经验势，建立了DNA纳观几何、物理、化学特征以及芯片几何尺寸、宏观力学性能等因素与基因芯片总能量之间的关系。

From the aspect of synergetics, it is recognized that competition and synergia between the subsystems and among their elements are the internal dynamics of system coordination development, and from the aspect of dissipative theory, it is recognized that the inflow of negative entropy is the external restraint of system coordination development.

从协同学角度，分析了子系统之间和要素之间的竞争与协同是人才资源系统与经济系统协调发展的内部动力；从耗散结构理论角度，分析了人才资源与经济协调发展必须借助于复合系统之外的&负熵流入&作为外在约束条件。

The entropy effect on the Gibbs free energy of 5-fluorouracil and 5-chlorouracil is very small and there is little significance for the tautomeric equilibria.

讨论了水溶剂化作用对异构体的能量、电荷分布和偶极矩的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。