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Weighted Likelihood Estimation Method Based on the Multidimensional Nominal Response Model
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作者 孙珊珊 陶剑 《Northeastern Mathematical Journal》 CSCD 2008年第3期250-256,共7页
The Monte Carlo study evaluates the relative accuracy of Warm's (1989) weighted likelihood estimate (WLE) compared to the maximum likelihood estimate (MLE) using the nominal response model. And the results indi... The Monte Carlo study evaluates the relative accuracy of Warm's (1989) weighted likelihood estimate (WLE) compared to the maximum likelihood estimate (MLE) using the nominal response model. And the results indicate that WLE was more accurate than MLE. 展开更多
关键词 weighted likelihood estimation item response model nominal response model
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Response time of variable transparency glass and its application to welding goggles
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作者 洪跃 沈龙骥 +1 位作者 金世良 王权 《Journal of Shanghai University(English Edition)》 CAS 2008年第5期462-465,共4页
The behavior of variable transparency glass is studied, and the response time analyzed and measured aimed at applications to welding goggles. Detection apparatus for goggle testing is involved in the design and develo... The behavior of variable transparency glass is studied, and the response time analyzed and measured aimed at applications to welding goggles. Detection apparatus for goggle testing is involved in the design and development. Charac-teristics of the apparatus are discussed based on experiments. The definition of nominal response time and effective response time are presented based on the analysis and calculation with experimental data. 展开更多
关键词 nominal response time effective response time welding goggles
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