查询词典 irrational equation

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。

Several important nonlinear equations of mathematical physics such as φ4 equation, Klein-Gordon equation, the approximate equations of sine-Gordon equation and sinhGordon equation, Landau-Ginzburg-Higgs equation, Duffing equation, nonlinear telegraph equation are the special cases of the nonlinear wave equation presented in this paper.

几个有重要应用的非线性数学物理方程，如矿方程，Klein-Gordon方程，Sine-Gordon方程，及Sinh-Gordon方程的近似，Landau-Ginzburg-Higgs方程，Duffing方程，非线性电报方程等都可作为该方程的特殊情形得到相应的显式精确解，这里方法也可推广到n+1维空间情形。

Establish the steady-state and transient model using the three hydrodynamics equations (Continuity equation, Momentum equation and Energy equation). By comparing different state equation, it selects the BWRS state equation which is considered the most accurate state equation in current natural gas measurement. It calculates compression factor, density and other Thermal parameters based on BWRS state equation. In Numerical solution of the steady-state and transient model, compression factor, friction coefficient and all the other Thermal parameters are recalculated in each small time step to reduce the numerical calculation error.

在稳态模型的建立上，利用流体力学三大方程(连续性方程、运动方程和能量方程)，通过比较不同的状态方程选用了目前被认为最精确的用于天然气计量的BWRS状态方程，并以此方程为基础进行压缩因子、密度等热物性参数的计算；在稳态模型的求解上，选用容易计算，精度较高的标准型龙格—库塔(Runge-Kutta)法进行数值求解，并且在迭代过程的每一小步都重新计算燃气的压缩因子，摩阻系数等所有的计算参数，以减少数值计算的误差。

Chapter 2 is devoted to study of exact solutions of the nonlinear evolution equations. Using solutions of a Bernoulli equation instead of tanh in tanh-function method we find some more general solutions of the KdV-Burgers-Kuramoto equation , and by using the nonlinear telegraph equation we show that there are many different choices on its balancing number m and the power n of the nonlinear term in Bernoulli equation by which we can recover the previously known solutions and also can derive new square root type solitary wave solutions. Exact solitary wave solutions for a surface wave equation are obtained by means of the homogeneous balance method. We also present an approach for constructing the solitary wave solutions and non-solitary wave solutions of the nonlinear evolution equations by using the homogeneous balance method directly, which is also used to find the steady state solutions, solitary wave solutions and the non-solitary wave solutions of the 2+1 dimensional dispersive long wave equations. The soliton-like solutions of the BLMP equation and the 2+1 dimensional breaking soliton equation are found by use of the symbolic-computation-based Method.

第二章中研究了非线性发展方程的精确解：用双曲正切函数法中的双曲正切函数换为Bernoulli方程的解的方法而给出KdV-Burgers-Kuramoto方程的精确解并用非线性电波方程为例说明了平衡数m和Bernoulli方程中非线性项的次数n有着多种选择的可能，它不但使我们能找到已知解而且也能找出新的根式孤立波解；用齐次平衡法给出一个曲面波方程的精确孤立波解，并提出直接用齐次平衡法寻找非线性发展方程的孤立波解、非孤立波解的方法，作为应用给出2+1维色散长波方程组等的定态解、孤立波解、非孤立波解等；用Symbolic-computation-basedMethod获得BLMP方程和2+1维破裂孤子方程的类孤子解；提出sine-Gordon型方程的直接求解方法，并获得sine-Gordon方程、双sine-Gordon方程、sinh-Gordon方程、MKdV-sine-Gordon方程和Born-Infeld方程等的精确孤立波解。

Results: The usage of ceftezole sodium was highest in the formulas which weren't combined with other medication. The rate of combined application of two medicines was 44.03% in all the formulas. In addition, the phenomenon of irrational utilization of medicines, irrational dosage, irrational carrying agent and general usage of ribavirin existed.

结果：在未联合用药的处方中，头孢替唑钠的使用率最高；联合用药中2种药物配伍应用的输液处方占被调查处方的44.03%；此外存在着使用方法不合理、使用剂量不合理、载体使用不合理、利巴韦林广泛应用的情况。

Results: The usage of ceftezole sodium was highest in the formulas which werent combined with other medication. The rate of combined application of two medicines was 44.03% in all the formulas. In addition, the phenomenon of irrational utilization of medicines, irrational dosage, irrational carrying agent and general usage of ribavirin existed.

结果：在未联合用药的处方中，头孢替唑钠的使用率最高；联合用药中2种药物配伍应用的输液处方占被调查处方的44.03%；此外存在着使用方法不合理、使用剂量不合理、载体使用不合理、利巴韦林广泛应用的情况。

This thesis undertakes to analyze and elaborate on the interaction relationship,mutual fusion,mutual penetration,mutual conversion,mutual critique,complementation and inseparableness between the rational and irrational and to explore the interrelationship,structure,and mechanism of an integration of irrational factors as well as the value and role that they play in man"s understanding,the social and historical development,and man"s social practical activities on the basis of man"s existence and mankind"s spiritual development predicated on the leading role of reason,from the perspectives of integration of the rational and irrational integrating the historical and theoretical,and employing the stances,viewpoints,and methodology of Marxist philosophy,as well as from the multi-dimensional perspectives.

本文以人的存在及人类精神的发展为基础，以理性具有主导地位为前提，以理性与非理性相统一为出发点，以史论相结合的方式，运川马克思主义哲学的立场、观点和方法，从多维的视角出发在分析和阐述理性与非理性之间相互作用、相互融合、相互渗透、相互转化、相互批评、彼此消长、不可分离的关系的基础上，探求非理性因素之间的整合关系、结构、机制及其在人的认识活动中、在社会历史发展过程中、在人的社会实践活动中的价值和作用。

This thesis undertakes to analyze and elaborate on the interaction relationship, mutual fusion, mutual penetration, mutual conversion, mutual critique, complementation and inseparableness between the rational and irrational and to explore the interrelationship, structure, and mechanism of an integration of irrational factors as well as the value and role that they play in man's understanding, the social and historical development, and man's social practical activities on the basis of man's existence and mankind's spiritual development predicated on the leading role of reason, from the perspectives of integration of the rational and irrational integrating the historical and theoretical, and employing the stances, viewpoints, and methodology of Marxist philosophy, as well as from the multi-dimensional perspectives.

中文题名多维视野中的非理性及其价值研究副题名外文题名 The irrational in multi-dimensional perspective and its value study 论文作者何颖导师张奎良教授学科专业马克思主义哲学研究领域\研究方向马克思哲学思想及其现代意义学位级别博士学位授予单位黑龙江大学学位授予日期2002 论文页码总数10，301页关键词非理性理性价值馆藏号BSLW /2003 /B0-0 /1 本文以人的存在及人类精神的发展为基础，以理性具有主导地位为前提，以理性与非理性相统一为出发点，以史论相结合的方式，运用马克思主义哲学的立场、观点和方法，从多维的视角出发在分析和阐述理性与非理性之间相互作用、相互融合、相互渗透、相互转化、相互批评、彼此消长、不可分离的关系的基础上，探求非理性因素之间的整合关系、结构、机制及其在人的认识活动中、在社会历史发展过程中、在人的社会实践活动中的价值和作用。

This thesis simply defines the rational factors and irrational factors and points out that the irrational factors have the characters of emergency, instantaneousness, illogicality, non-consciousness, non-language and so on, and discusses function of inspiring, promoting, exploding and adjusting of the irrational factors to the human cognition.

本文对"非理性因素"、"理性因素"的概念进行了简要界定，指出了"非理性因素"具有突发性、瞬时性、非逻辑性、不自觉性、非语言性等特点；探讨了"非理性因素"对人认识的激励作用、推动作用、激发作用和调节作用；同时就"非理性因素"中的"情感"进行分类探讨。

At last, a method on creation and calculation of a kind of irrational number is researched. The digit number of the extension of this irrational number is random on certain basis. Therefore, a stream cipher is designed, which uses the extension digit of the irrational number as the key stream.

最后本文在研究一种无理数的生成方法和计算方法的基础上，利用该类无理数在某基底的展开序列中各个位的数字具有良好的随机统计特性的特点，提出了一种以这类无理数的展开数字流作为密钥流的序列密码设计方法，并对生成的密钥流的统计特性进行了分析和测试。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。