Time series prediction has been successfully used in several application areas, such as meteoro-logical forecasting, market prediction, network traffic forecasting, etc. , and a number of techniques have been develop...Time series prediction has been successfully used in several application areas, such as meteoro-logical forecasting, market prediction, network traffic forecasting, etc. , and a number of techniques have been developed for modeling and predicting time series. In the traditional exponential smoothing method, a fixed weight is assigned to data history, and the trend changes of time series are ignored. In this paper, an uncertainty reasoning method, based on cloud model, is employed in time series prediction, which uses cloud logic controller to adjust the smoothing coefficient of the simple exponential smoothing method dynamically to fit the current trend of the time series. The validity of this solution was proved by experiments on various data sets.展开更多
A forward recursive formulation based on corotational frame is proposed for flexible planar beams with large displacement.The traditional recursive formulation has been successfully used for flexible mutibody dynamics...A forward recursive formulation based on corotational frame is proposed for flexible planar beams with large displacement.The traditional recursive formulation has been successfully used for flexible mutibody dynamics to improve the computational efficiency based on floating frame,in which the assumption of small strain and deflection is adopted.The proposed recursive formulation could be used for large displacement problems based on the corotational frame.It means that the recursive scheme is used not only for adjacent bodies but also for adjacent beam elements.The nodal relative rotation coordinates of the planar beam are used to obtain equations with minimal generalized coordinates in present formulation.The proposed formulation is different from absolute nodal coordinate formulation and the geometrically exact beam formulation in which the absolute coordinates are used.The recursive scheme and minimal set of dynamic equations lead to a high computational efficiency in numerical integration.Numerical examples are carried out to demonstrate the accuracy and validity of this formulation.For all of the examples,the results of the present formulation are in good agreement with results obtained using commercial software and the published results.Moreover,it is shown that the present formulation is more efficient than the formulation in ANSYS based on GEBF.展开更多
Objective： To investigate the efficacy of horizontal acupuncture with sticking needles plus plucking manual technique in treating scapular, dorsal and lumbar myofascitis. Methods： One hundred and seventy-eight patie...Objective： To investigate the efficacy of horizontal acupuncture with sticking needles plus plucking manual technique in treating scapular, dorsal and lumbar myofascitis. Methods： One hundred and seventy-eight patients with scapular, dorsal and lumbar myofascitis were randomly allocated to observation group treated by horizontal needling with sticking needles plus plucking manual technique and control group treated by perpendicular acupuncture at the pain point. Results and conclusion： The cure rate, and the total effective rate in the observation group were 69.6%, and 100%0 respectively and those in the control group were 13.1%, and 82.5% respectively. Statistical analysis showed a very significant difference in curative effect between the two groups （P〈0.01）, indicating that the effect was significantly better in the observation group than in the control group.展开更多
文摘Time series prediction has been successfully used in several application areas, such as meteoro-logical forecasting, market prediction, network traffic forecasting, etc. , and a number of techniques have been developed for modeling and predicting time series. In the traditional exponential smoothing method, a fixed weight is assigned to data history, and the trend changes of time series are ignored. In this paper, an uncertainty reasoning method, based on cloud model, is employed in time series prediction, which uses cloud logic controller to adjust the smoothing coefficient of the simple exponential smoothing method dynamically to fit the current trend of the time series. The validity of this solution was proved by experiments on various data sets.
基金Projects(11772188,11132007,11202126)supported by the National Natural Science Foundation of ChinaProject(11ZR1417000)supported by the Natural Science Foundation of Shanghai,China
文摘A forward recursive formulation based on corotational frame is proposed for flexible planar beams with large displacement.The traditional recursive formulation has been successfully used for flexible mutibody dynamics to improve the computational efficiency based on floating frame,in which the assumption of small strain and deflection is adopted.The proposed recursive formulation could be used for large displacement problems based on the corotational frame.It means that the recursive scheme is used not only for adjacent bodies but also for adjacent beam elements.The nodal relative rotation coordinates of the planar beam are used to obtain equations with minimal generalized coordinates in present formulation.The proposed formulation is different from absolute nodal coordinate formulation and the geometrically exact beam formulation in which the absolute coordinates are used.The recursive scheme and minimal set of dynamic equations lead to a high computational efficiency in numerical integration.Numerical examples are carried out to demonstrate the accuracy and validity of this formulation.For all of the examples,the results of the present formulation are in good agreement with results obtained using commercial software and the published results.Moreover,it is shown that the present formulation is more efficient than the formulation in ANSYS based on GEBF.
文摘Objective： To investigate the efficacy of horizontal acupuncture with sticking needles plus plucking manual technique in treating scapular, dorsal and lumbar myofascitis. Methods： One hundred and seventy-eight patients with scapular, dorsal and lumbar myofascitis were randomly allocated to observation group treated by horizontal needling with sticking needles plus plucking manual technique and control group treated by perpendicular acupuncture at the pain point. Results and conclusion： The cure rate, and the total effective rate in the observation group were 69.6%, and 100%0 respectively and those in the control group were 13.1%, and 82.5% respectively. Statistical analysis showed a very significant difference in curative effect between the two groups （P〈0.01）, indicating that the effect was significantly better in the observation group than in the control group.
