Friday, April 1, 2016

response surface whether the system contains a maximum or a minimum or a saddle point,

In order to develop a proper approximation for f, the experimenter usually starts with a low-order polynomial in some small region.  If the response can be defined by a linear function of independent variables, then the approximating function is a first-order model.  A first-order model with 2 independent variables can be expressed as 
   
εβ
ββ +++= 22110 xxy 
If there is a curvature in the response surface, then a higher degree polynomial should be used.  The approximating function with 2 variables is called a second-order model:      εβ ββ ββ β ++++++= 2112 2 2222 2 111122110 x xxxxxy   
In general all RSM problems use either one or the mixture of the both of these models.  In each model, the levels of each factor are independent of the levels of other factors. When the levels of each factor are not independent then a mixture model is appropriate for designing an RMS model.



One of the important facts is whether the system contains a maximum or a minimum or a saddle point, which has a wide interest in industry. Therefore, RMS is being increasingly used in the industry.  Also, in recent years more emphasis has been placed by the chemical and processing field for finding regions where there is an improvement in response instead of finding the optimum response (Myers, Khuri, and Carter 1989).  In result, application and development of RMS will continue to be used in many areas in the future


What is a response surface design? - Minitab

support.minitab.com/en-us/.../what-is-a-response-surface-design/
Response surface with curvature. There are two main types of response surface designs: Central Composite designs: Central Composite designs can fit a full ...

[PDF]THE RESPONSE SURFACE METHODOLOGY - Semantic ...

https://pdfs.semanticscholar.org/.../70c0c74544682c44c57725c529de85...
by N Bradley - ‎Cited by 102 - ‎Related articles
true response surface with curvature. The second-order model includes all the terms in the first-order model, and quadratic and cross product terms. It is usually ...

Thesis response surface methodology | www.nard.ee

www.nard.ee/connect/thesis-response-surface-methodology/
This thesis has shown that response surface metamodels may be used. 6 true response surface with curvature. The second-order model includes all the terms in ...

[PDF]Antioxidant extraction process for Andean Oca by a ... - RUN

run.unl.pt/bitstream/10362/16006/1/Parreira_2014.pdf
by FP Parreira - ‎2014 - ‎Related articles
area (>50000) for both factors low levels, presenting a Response Surface with curvature. This interaction is aligned with the significant factors found in the ...

[PDF]Print this article - Council For Innovative Research

cirworld.com/journals/index.php/jbt/article/download/5670/pdf_66
Dec 14, 2015 - the response surface with curvature plots and visualize of the maximum values of the dependent variables. The ANOVA of. CCRD results were ...

AN INSTRUMENTALIST APPROACH TO VALIDATION: A ...

home.chpc.utah.edu/~u0552682/dissertation/
University of Utah
Loading...
Subsection 5.4.4: First-Order Gasification Response Surface With Curvature. Subsection 5.4.5: Coal Gasification Response Surface Conclusions. Section 5.5: ...

[PDF]Mechanical Pretreatment of Corncobs for Bioethanol ...

ir.lib.uwo.ca/cgi/viewcontent.cgi?article...
University of Western Ontario
Loading...
by J Zheng - ‎2014 - ‎Related articles
used for xylose recovery in approximating the true response surface with curvature. The lack of fit measures the failure of the model to represent data in the ...

[PDF]Through Spindle Cooling: A Study of the Feasibility of Split ...

scholar.sun.ac.za/bitstream/handle/10019.1/.../prins_spindle_2015.pdf?...
by C Prins - ‎2015 - ‎Related articles
response surface with curvature that is close to the optimum response surface. The second-order equation can be used to predict cutting forces within the design ...

[PDF]Download as a PDF - CiteSeerX

citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.676.5595...
by J Zheng - ‎2014 - ‎Related articles
approximating the true response surface with curvature. The lack of fit measures the failure of the model to represent data in the experimental domain at points ...

Nitrogen Source Optimization for Cellulase Production by ...

https://www.researchgate.net/.../40690500_Nitrogen_Source_...
ResearchGate
Loading...
The present study aimed at maximizing cellulase production by Penicillium funiculosum using sequential experimental design methodology for optimizing the ...

No comments:

Post a Comment