نتایج جستجو برای: response surface models
تعداد نتایج: 2353723 فیلتر نتایج به سال:
We use a simple methodology to test whether a set of atmospheric climate models with prescribed radiative forcings and ocean surface conditions can reproduce twentieth century climate variability. Globally, rapid land surface warming since the 1970s is reproduced by some models but others warm too slowly. In the tropics, air-sea coupling allows models to reproduce the Southern Oscillation but i...
with the huge global and wide range of attention placed upon quality, promoting and optimize the reliability of the products during the design process has turned out to be a high priority. in this study, the researcher have adopted one of the existing models in the reliability science and propose a bi-objective model for redundancy allocation in the series-parallel systems in accordance with th...
vendor managed inventory is a continuous replenishment program that is designed to provide major cost saving benefits for both vendors and retailers. previous research on this area mainly included single objective optimization models where the objective is to minimize the total supply chain costs or to maximize the total supply chain benefits. this paper presents a bi-objective mathematical mod...
Dynamic response analysis of mechanical structures is usually performed by adopting numerical/analytical models. Finite element (FE) modeling as a numerical approach plays an important role in dynamic response analysis of complex structures. The calculated dynamic responses from FE analysis are only reliable if accurate FE models are used. There are many elements in real mechanical structures w...
Surface plasmon resonance sensors have been widely considered due to their sensitivity, accuracy and response speed. In order to stimulate surface plasmons, a crisman structure is used in which the metal layer (mainly gold or silver) is placed on the surface of the prism. Due to temperature changes, various factors such as optical properties of the metal, the prism and the surrounding environme...
Introduction: In studies of the adsorption of pollutants onto different adsorbents, determining the adsorbent dose of the most important characteristics must be considered. The aim of the study was the determination and modeling of dose-response bone char fluoride removal from aqueous solutions and comparison of the adsorption isotherm models with dose-response models from the perspective of ad...
blends of sorghum and soybean flours were processed in a co-rotating twin screw extruder to prepare expanded product. response surface methodology (rsm) was used to study the effect of soya level (sl), feed moisture (fm), barrel temperature (bt) and screw speed (ss) on extruder system parameters and physical properties of the extrudate. response variables were product temperature (pt), motor to...
Background and Objective: Existence of dye in water resources and wastewater can cause the environmental problems that must be removed from water. There has been some increase in the use of low-cost adsorbent substances as sewage treatment over recent years. Therefore, the purpose of this study was to optimize dye (RO16) removal from aqueous solutions by quarternary ammonium chloride (C6H15Cl2N...
In this study, the method of multiple scales is used to perform a nonlinear vibration analysis of a mechanical system in two cases; with dry and lubricated clearance joints. In the dry contact case, the Lankarani-Nikravesh model is used to represent the contact force between the joined bodies. The surface elasticity is modeled as a nonlinear spring-damper element. Primary resonance is discussed...
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