系统数学模型的基本模式：行为模式和状态变量模式以及在状态变量模式下的同构与同态系统；
The two basic modes of mathematical model-behavior mode and state variable mode, along with the isomorphic and homomorphic relation between models and real system are described.
在此基于小波域隐马尔可夫树模型，将贝叶斯估计和同态滤波思想有机结合，提出一种新的医学超声图像去噪方法。
Based on wavelet domain Hidden Markov model, a novel speckle suppression method for medical ultrasound images is presented which combines Bayesian estimation and homomorphic filtering.
针对代表性投资者对于下跌风险和上升风险的不同态度，推导了基于“熊市”和“牛市”的单期资产定价模型，并运用中国股市数据进行了实证。
From the different attitude of representative investor to downside risk and upside risk, assets pricing models in one period were put forward based on "bear market" and "bull market".
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