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International Journal of Interdisciplinary Research

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Table 4 Coefficients for response surface equations for four input parameters

From: Development and comparison of artificial neural network and statistical model for prediction of thermo-physiological properties of polyester–cotton plated fabrics

  Coefficients of \(x_{1} ,x_{2} ,x_{3} x_{4}\) Parameters Thermal resistance × 10−3 (Km2/W) Thermal absorptivity (Ws1/2/m2K) Air permeability (cm3/cm2/s) Moisture vapour transmission rate (g/m2/24 h)
Linear terms β o constant 33.93 −27.92 221.67 52.81
β 1 x 1 86.42 608.91 1499.1 84.35
β 2 x 2 −609.08 −4400.8 −10,841 −602.47
β 3 x 3 1.01 2.58 5.22 −1.56
β 4 x 4 −12 22.31 70.28 3.21
Interaction terms β 5 x 1 x 2 −53.93 401.82 979.64 55.20
β 6 x 1 x 3 0.13 0.625 0.296 0.092
β 7 x 1 x 4 −0.028 0.158 0.825 0.058
β 8 x 2 x 3 −1.06 −0.857 0.32 −0.22
β 9 x 2 x 4 −0.33 −1.77 −1.07 −0.028
β 10 x 3 x 4 0.0043 −0.0192 −0.47 −0.023
Square terms β 11 x 21 7.41 −56.32 −136.23 −7.75
β 12 x 22 6.85 −3.12 −6.98 −0.31
β 13 x 23 −0.00016 −0.095 −0.096 2.35e−4
β 14 x 24 1.14 −2.51 8.60 0.33
  1. \(x_{1}\) is back layer yarn linear density (tex), x 2 is filament fineness (decitex), x 3 is total yarn linear density (tex) and x 4 is loop length (mm)