kim and bishu (fuzzy sets and systems 100 (1998) 343-352) proposeda modification of fuzzy linear regression analysis. their modificationis based on a criterion of minimizing the difference of the fuzzy membershipvalues between the observed and estimated fuzzy numbers. we show that theirmethod often does not find acceptable fuzzy linear regression coefficients andto overcome this shortcoming, pr...

Aiming at the problem of big calculation error in solving reliability index by traditional response surface method, an improved method based on linear gradient iteration criterion is proposed. First, proposed to reduce step size with increase times. It will improve fitting accuracy and lead a better convergence while approaching limit state surface. Then, reduction coefficient iterative studied...

The phenomenon of combustion driven oscillations has long held the interest of scientists and engineers. According to the so-called Rayleigh criterion [1], driving of the pressure oscillations occurs if the periodic heat release rate is generally coincident with the pressure oscillations. The main mechanisms involved are considered to be both thermoacoustic and vortical in nature [2-5]. Useful ...