Pub Date : 2006-01-01DOI: 10.3969/J.ISSN.1004-731X.2006.05.020
Jing Lin, Yuqi Han, Huiming Zhu, Jie Chen
Weibull regression model was discussed,which is used widely in the family of Bayesian accelerated failure-time models.As for the productions whose life distributions belong to Weibull distribution,the MCMC method was brought forward based on Gibbs sampling to simulate dynamically the Markov Chain of the parameters' posterior distribution.From this,the parameters' Bayesian estimation of the Weibull regression model was given in the condition of the random truncated test and when the prior distribution of the failure rate belonged to the Gamma distribution,which improved the precision of the numeration.Also the data's simulation was utilized to show the process of setting the model by using the BUGS package.It proves the objectivity and validity of the model.
{"title":"Weibull Regression Model Based on MCMC Method and Its Application in Reliability","authors":"Jing Lin, Yuqi Han, Huiming Zhu, Jie Chen","doi":"10.3969/J.ISSN.1004-731X.2006.05.020","DOIUrl":"https://doi.org/10.3969/J.ISSN.1004-731X.2006.05.020","url":null,"abstract":"Weibull regression model was discussed,which is used widely in the family of Bayesian accelerated failure-time models.As for the productions whose life distributions belong to Weibull distribution,the MCMC method was brought forward based on Gibbs sampling to simulate dynamically the Markov Chain of the parameters' posterior distribution.From this,the parameters' Bayesian estimation of the Weibull regression model was given in the condition of the random truncated test and when the prior distribution of the failure rate belonged to the Gamma distribution,which improved the precision of the numeration.Also the data's simulation was utilized to show the process of setting the model by using the BUGS package.It proves the objectivity and validity of the model.","PeriodicalId":66490,"journal":{"name":"计算机仿真","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70174869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2004-01-01DOI: 10.1109/iccasm.2010.5620087
H. Zhigang
In the paper, Right-angled flights characteristics of rotary dryers is researched. On the basis of the mathematical model, a set of equations has been derived to calculate the solids holdup on Right-angled flights in such dryers. Ratio of the solids holdup to maximum solids holdup is explored. A kind of practical rotary dryer is simulated by VB program language. The result of the simulation is obtained in three kind of different conditions. Simulated results is satisfactory. The programming is a useful reference for research of the similar problem.
{"title":"Simulation and Test Study on Right-angled Flights of Rotary Dryers","authors":"H. Zhigang","doi":"10.1109/iccasm.2010.5620087","DOIUrl":"https://doi.org/10.1109/iccasm.2010.5620087","url":null,"abstract":"In the paper, Right-angled flights characteristics of rotary dryers is researched. On the basis of the mathematical model, a set of equations has been derived to calculate the solids holdup on Right-angled flights in such dryers. Ratio of the solids holdup to maximum solids holdup is explored. A kind of practical rotary dryer is simulated by VB program language. The result of the simulation is obtained in three kind of different conditions. Simulated results is satisfactory. The programming is a useful reference for research of the similar problem.","PeriodicalId":66490,"journal":{"name":"计算机仿真","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/iccasm.2010.5620087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62302847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents an improved method of speckle filtering in SAR image based on structure detection to solve some problems of the Lopes' structure detection and statistical adaptive speckle filtering. The method uses the probability iterative to segment SAR image and detect the edges, then combines the strong scatterer detection result to label the SAR image as structure area and non-structure area. In non-structure area, the Lee filter is used, and in the structure area, the intensity of the image is preserved. Experimental results with RADARSAT images verify the practicability and the advantage of the improved method.
{"title":"An improved method of speckle filtering in SAR image based on structure detection","authors":"Jia Cheng-li, Gao Gui, Kuang Gang-yao, Yu Wen-xian","doi":"10.1109/RISSP.2003.1285698","DOIUrl":"https://doi.org/10.1109/RISSP.2003.1285698","url":null,"abstract":"This paper presents an improved method of speckle filtering in SAR image based on structure detection to solve some problems of the Lopes' structure detection and statistical adaptive speckle filtering. The method uses the probability iterative to segment SAR image and detect the edges, then combines the strong scatterer detection result to label the SAR image as structure area and non-structure area. In non-structure area, the Lee filter is used, and in the structure area, the intensity of the image is preserved. Experimental results with RADARSAT images verify the practicability and the advantage of the improved method.","PeriodicalId":66490,"journal":{"name":"计算机仿真","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/RISSP.2003.1285698","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62513550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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