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This paper Puts forward the four main parameters of the Permeability classification for coal mass es, that is,the fractal dimension of the cracks in coal mass es,the number of the cracks in one meter's characteristic scale, the conducting water coefficient of coal samples and its Porousness; and founds the mathematical pattern of the complex judgement by fuzzy sets.

提出了进行煤体渗流特性分类的四个主要指标,即煤体裂隙分布的分形维数D、特征尺度L=1m的裂隙条数N、煤样导水系数T和煤的孔隙率η等;建立了煤体渗流特性模糊数学综合评价的数学模型;根据煤层注水工程应用的实际情况。

ResultsThe optimized technology of the preparation was 100% sugar powdered and 10% LHPC.

方法利用spss软件,采用正交设计法和多指标综合评分法优选工艺条件。

This dissertation used 6 celery lines. in 14℃/10℃ and 10℃/10℃, the low temperature stress tolerance of lines 10, 14, 16, 20, 22, 24 are evaluated by mensurate weight growing, stability of cell membrane, dissociative praline, dissolvable sugar, dissolvable protein. The main results are as follows: It is good putting celery plants in 10℃/10℃ when we study the changes the celery materials make under low temperature stress.

实验选择6个芹菜品系,在18℃/14℃和14℃/10℃、10℃/10℃低温胁迫处理下,通过测定生长量、膜稳定性、游离脯氨酸、可溶性糖、可溶性蛋白质等指标综合评价筛选确定了6个(10、14、16、20、22、24)品系的耐低温胁迫能力,结果表明:低温胁迫研究中采用10℃/10℃处理芹菜幼苗比较合理。

This paper introduces the research method of OEE , points out that OEE should be the prime evaluation index of the production management, and advances some concrete methods of OEE in production management.

介绍了设备综合效率的研究方法,指出应以OEE作为生产管理的首要评价指标,并提出了OEE在生产管理中的具体应用。

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究,得出了许多有价值的结论,主要概括如下: 1、阐述了目前针对超声电机压电振子的主要建模方法,对压电振子动态特性的研究意义和必要性进行了论述,突出了本文研究内容的迫切性; 2、以压电陶瓷诱发弹性体发生弯曲变形为例,分析了压电陶瓷通过诱发应变来实现机电能量转换的机理;对基于纵弯模式的压电振子的运动及动力传递机理进行了分析; 3、基于模态假定,利用分析动力学的Hamilton原理,建立了面向直线超声电机压电振子的机电耦合动力学模型,并据此建立了压电振子的等效电路模型,导出了电参量与动力学特性参量的耦合方程,为压电振子与驱动电路的匹配提供了依据; 4、从压电陶瓷的本构方程出发,综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程,采用虚位移原理,建立了压电振子动态问题机电耦合场求解的有限元控制方程,为研究其大功率驱动下的非线性本构模型奠定了基础; 5、界定压电振子的动力学特性指标,对压电振子的机电耦合动力学模型参数进行计算及变参数仿真;依据等效电路模型,对压电振子的电学特性进行了仿真分析;通过有限元数值实验,对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析,找出了实现模态简并的激振频率;利用有限元控制方程,通过编程计算,对压电振子的力电耦合场参数进行了详细计算,得出了一些有价值的结论。

In order to exactly evaluate the submarine cruise missile shot probability, the paper establish a new index system based on the analysis of factors of the system.

为准确评价潜射巡航导弹的命中概率,对影响命中概率的因素进行了具体分析,建立了潜射巡航导弹命中概率综合评价的指标体系。

TDI(SDNN,RMSSD,PNN50)showed decrease in all children with palpitation of unknown reasons.Combined with the change character of ST-T segment and dynamic electrocardiograph analysis,TDI may be helpful for clinic in diagnosis of beta-receptor hypersensitivity and cardiac psychoneurosis.

不明原因心悸患儿的心率变异性时域指标SDNN、RMSSD、PNN50均有下降,结合ST-T改变的特点,动态心电图的综合分析可以为临床诊断β-受体功能亢进症和心脏神经官能症提供参考。

There are four 250 MW and above IGCC power plants built and put into operation now in the world.

综合分析了这4种煤气化工艺的设备技术特点和技术经济指标及在IGCC电站中的应用情况。

This paper established an index system of urban spatial development function division which could well reflect the social,economic and environmental characteristics,and used some corresponding methods to quantitate it.

建立了一套综合反映研究区社会、经济、环境状况的空间开发功能区划指标体系,并运用相应的方法对其进行了量化。

The DW data using quality is subjective, and has to quantize quality to give play to its effect and make it have more targets and decisive factors, which is easy to judge it comprehensively.

数据仓库数据使用质量本身是一个主观性的问题,要使之发挥相应的作用就必须量化质量,使其具有多个指标和决定因素,以便于综合评判。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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