一类生化反应系统微分方程模型的极限环 limit cycles in a class of biochemistry reaction systems
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We use structural equation modeling mainly in this paper to analyze . the sample is chongqing manufacturing enterprises 本文使用的方法主要是结构方程模型的方法,采样的范围是重庆市制造类企业。
5 . i applied the regression analysis into the establishment of multi variableregression equation model of the prices of dushanzi petrochemical products 第五,运用回归分析,建立独山子化工产品价格预测的多元回归方程模型。
Moreover , it is confirmed that more desired results could be obtained by utilizing the li ' s new dispersion relation ( 2003 ) instead of the linear form 另外还证实了在缓坡方程中引入非线性色散关系可以明显改善缓坡方程模型的计算结果。
In this work , the space is discretizied using tetrahedral meshing grid , and the flow is described by indoor zero equation model , and simple algorithm is applied 本文采用四面体网格对空间离散,紊流模型采用室内零方程模型,选用smple算法。
Results the regression coefficients were highest in the factor of depression , anxiety , interpersonal relationship , psychoticism and obsessive compulsive disorder 结果经结构方程模型的拟合,抑郁、焦虑、人际关系、精神病性和强迫症状的回归系数较高。
Methods descriptive analysis was conducted among 818 medicos , who were sampled by stratified cluster sampling , and the model was established 方法采用分层整群抽样的方法,对某医科大学818名医学生心理健康状况的一般情况进行描述性分析,并拟合结构方程模型。
To explore how and how much of influence adversity has on psychological or physical health by mood and coping styles by correlation analysis and structural model method 在对各变量进行相关分析的基础上,建立了结构方程模型,进一步揭示了各测量变量间的内在关系。
The conclusions were as follows : 1 . somatization , anxiety and depression did not enter hypothesized structural model and their standard deviations are very large 结果表明: 1 )抑郁、焦虑和躯体化未进入结构方程模型,标准差较大,不适合测量大一新生的身心健康。
Finally , the navier - stokes equations for 3 - d compressible turbulent flow were constructed and also the standard k - equations and standard wall functions were given 最后,建立了三维可压缩雷诺平均navier - stokes方程、给出了标准的-两方程模型和标准壁面函数。
Simulates the air distribution in an air conditioned airport ball by phoenics using zero equation turbulent model and three point momentum draught model 摘要采用零方程模型和3点动量风口模型,应用计算流体力学软件phoenics模拟了某候机厅空调气流组织方案的速度场和温度场。