The unsmooth boundary will greatly affect motion morphology of a shallow water wave, and a fractal space is introduced to establish a generalized KdV-Burgers equation with fractal derivatives. The semi-inverse method is used to establish a fractal variational formulation of the problem, which provides conservation laws in an energy form in the fractal space and possible solution structures of t...

We introduce a new measure for capital market efficiency. The measure takes into consideration the correlation structure of the returns (long-term memory), local herding behavior (information dimension) and uncertainty in the process (entropy). The efficiency measure is then taken as a distance from an ideal efficient market situation. Methodology is applied to a portfolio of 41 stock indices. ...

This study aims to evaluate the efficiency of the concentration-number (C-N) fractal model for discrimination of soil horizon regarding the depth distribution profile. In this regard, soil parameters such as pH, organic carbon content, calcareous mineral content, electrical conductivity and available phosphorus of Ziarat forestland in Golestan Province, north of Iran, has been investigated. The...

the purpose of this article is to present the summary of all the research done on the weak form of efficient market hypothesis. these tests include normality test of return distribution, auto correlation test. run test and filter tests.

This paper studies the effects of psychological, individual, product strategy, and situational factors on the impulse purchase behavior of customers in all Refah stores located in Tehran. The paper uses Betty and Ferrell Model to set forward and to test 4 hypothesis. All four hypothesis were confirmed. The results indicated that the selected factors had impact on the impulse behavior of the con...

introduction: water and soil retention curve is one of the most important properties of porous media to obtain in a laboratory retention curve and time associated with errors. for this reason, researchers have proposed techniques that help them to more easily acquired characteristic curve. one of these methods is the use of fractal geometry. determining the relationship between particle size di...

This paper presents the author’s scientific hypothesis on the effect of fractal flickering, which exhibits scale invariance with time, on the evoked responses of the retina [electroretinogram (ERG)] and visual cortex [visual-evoked cortical potentials (VEP)] in norm and neurodegenerative disorders. A new approach for ERG and VEP studies is proposed. In the proposed approach, standard stimuli ar...