Numerical solution of likelihood equations for a first-order response surface model for mixture paired comparisons

1994 ◽  
Vol 3 (3) ◽  
pp. 419-428
Author(s):  
Tawfik Hassan
Keyword(s):  
Numerical Solution ◽  
Response Surface ◽  
Response Surface Model ◽  
Surface Model ◽  
Paired Comparisons ◽  
First Order

scholarly journals Reservoir Inflow Prediction by Employing Response Surface-Based Models Conjunction with Wavelet and Bootstrap Techniques

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Muhammad Ahmed Shehzad ◽  
Adnan Bashir ◽  
Muhammad Noor Ul Amin ◽  
Saima Khan Khosa ◽  
Muhammad Aslam ◽  
...  
Keyword(s):  
Response Surface ◽  
Response Surface Model ◽  
Series Data ◽  
Surface Model ◽  
First Order ◽  
Daily Streamflow ◽  
Quadratic Response Surface ◽  
Quadratic Response ◽  
Reservoir Inflow ◽  
Inflow Prediction

Reservoir inflow prediction is a vital subject in the field of hydrology because it determines the flood event. The negative impact of the floods could be minimized greatly if the flood frequency is predicted accurately in advance. In the present study, a novel hybrid model, bootstrap quadratic response surface is developed to test daily streamflow prediction. The developed bootstrap quadratic response surface model is compared with multiple linear regression model, first-order response surface model, quadratic response surface model, wavelet first-order response surface model, wavelet quadratic response surface model, and bootstrap first-order response surface model. Time series data of monsoon season (1 July to 30 September) for the year 2010 of the Chenab river basin are analyzed. The studied models are tested by using performance indices: Nash–Sutcliffe coefficient of efficiency, mean absolute error, persistence index, and root mean square error. Results reveal that the proposed model, i.e., bootstrap quadratic response surface shows good performance and produces optimum results for daily reservoir inflow prediction than other models used in the study.

Optimization Design of Pressure Shell in Underwater Vehicle Based on Response Surface Model

2009 ◽  
Vol 419-420 ◽  
pp. 89-92
Author(s):  
Zhuo Yi Yang ◽  
Yong Jie Pang ◽  
Zai Bai Qin
Keyword(s):  
Finite Element ◽  
Response Surface ◽  
Optimization Design ◽  
Engineering Application ◽  
Element Model ◽  
Response Surface Model ◽  
Design Stage ◽  
Surface Model ◽  
Design Variables ◽  
Structure Strength

Cylinder shell stiffened by rings is used commonly in submersibles, and structure strength should be verified in the initial design stage considering the thickness of the shell, the number of rings, the shape of ring section and so on. Based on the statistical techniques, a strategy for optimization design of pressure hull is proposed in this paper. Its central idea is that: firstly the design variables are chosen by referring criterion for structure strength, then the samples for analysis are created in the design space; secondly finite element models corresponding to the samples are built and analyzed; thirdly the approximations of these analysis are constructed using these samples and responses obtained by finite element model; finally optimization design result is obtained using response surface model. The result shows that this method that can improve the efficiency and achieve optimal intention has valuable reference information for engineering application.

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