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A Simulation Study of Hierarchical Bayesian Fusion Spatial Small Area Model for Binary Outcome under Spatial Misalignment
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作者 Kindie Fentahun Muchie Anthony Kibira Wanjoya Samuel Musili Mwalili 《Open Journal of Statistics》 2021年第6期993-1009,共17页
<p> <span><span style="font-family:""><span style="font-family:Verdana;">Simulation (stochastic) methods are based on obtaining random samples </span><spa... <p> <span><span style="font-family:""><span style="font-family:Verdana;">Simulation (stochastic) methods are based on obtaining random samples </span><span style="color:#4F4F4F;font-family:Simsun;white-space:normal;background-color:#FFFFFF;"><span style="font-family:Verdana;">&theta;</span><sup><span style="font-family:Verdana;">5</span></sup></span><span style="font-family:Verdana;"></span><span style="font-family:Verdana;"> </span><span><span style="font-family:Verdana;"> </span><span><span style="font-family:Verdana;">from the desired distribution </span><em><span style="font-family:Verdana;">p</span></em><span style="font-family:Verdana;">(</span><span style="color:#4F4F4F;font-family:Verdana;white-space:normal;background-color:#FFFFFF;">&theta;</span><span style="font-family:Verdana;"></span><span style="font-family:Verdana;">)</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">and estimating the expectation of any </span></span><span><span style="font-family:Verdana;">function </span><em><span style="font-family:Verdana;">h</span></em><span style="font-family:Verdana;">(</span><span style="color:#4F4F4F;font-family:Verdana;white-space:normal;background-color:#FFFFFF;">&theta;</span><span style="font-family:Verdana;"></span><span style="font-family:Verdana;">)</span><span style="font-family:Verdana;">. Simulation methods can be used for high-dimensional dis</span></span><span style="font-family:Verdana;">tributions, and there are general algorithms which work for a wide variety of models. Markov chain Monte Carlo (MCMC) methods have been important </span><span style="font-family:Verdana;">in making Bayesian inference practical for generic hierarchical models in</span><span style="font-family:Verdana;"> small area estimation. Small area estimation is a method for producing reliable estimates for small areas. Model based Bayesian small area estimation methods are becoming popular for their ability to combine information from several sources as well as taking account of spat 展开更多
关键词 Simulation Small Area Estimation Hierarchical Bayesian Spatial misalign-ment Fusion Process
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The impact of gate misalignment on the analog performance of a dual-material double gate junctionless transistor
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作者 S.Intekhab Amin R.K.Sarin 《Journal of Semiconductors》 EI CAS CSCD 2015年第9期47-53,共7页
The analog performance of gate misaligned dual material double gate junctionless transistor is demonstrated for the first time. The cases considered are where misalignment occurs towards source side and towards drain ... The analog performance of gate misaligned dual material double gate junctionless transistor is demonstrated for the first time. The cases considered are where misalignment occurs towards source side and towards drain side. The analog performance parameters analyzed are: transconductance, output conductance, intrinsic gain and cut-off frequency. These figures of merits (FOMs) are compared with a dual material double gate inversion mode transistor under same gate misalignment condition. The impacts of different length of control gate (L 1) for a given gate length (L) are also studied and the optimum lengths La under misalignment condition to have better analog FOMs and high tolerance to misalignment are presented. 展开更多
关键词 dual material double gate (DMDG) junctionless transistor inversion mode transistor gate misalign-ment analog FOMs
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粗糙度和轴向运动对艉轴承混合润滑性能的影响
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作者 杨琨 张涛 韩冰 《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2024年第6期1058-1065,共8页
针对大型船舶航行过程中出现船体变形时艉轴承的磨损状态异常这一问题,本文探究磨损表面粗糙度变化和轴向运动对于艉轴承混合润滑性能的影响,建立了耦合轴向运动和表面粗糙度的混合润滑模型,通过数值模拟得到轴承润滑特征的分布,分析轴... 针对大型船舶航行过程中出现船体变形时艉轴承的磨损状态异常这一问题,本文探究磨损表面粗糙度变化和轴向运动对于艉轴承混合润滑性能的影响,建立了耦合轴向运动和表面粗糙度的混合润滑模型,通过数值模拟得到轴承润滑特征的分布,分析轴向运动和粗糙度对轴承混合润滑特性的影响,并对该润滑模型进行验证。计算结果表明:在轴向运动和轴颈倾斜耦合作用下,油膜厚度沿轴向方向非线性减小,油膜压力和接触压力在局部出现峰值,轴瓦在局部出现较大变形;轴向速度增加会加强动压润滑效应,轴向运动对润滑特性的影响程度随着倾角的增大而增加;粗糙度越大承载能力越强,同时接触情况越严重,会加速轴承的局部磨损。 展开更多
关键词 船舶艉轴承 混合润滑 轴向运动 粗糙度 局部接触 轴颈倾斜 润滑性能 数值模型
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