in this paper, considering the importance of opinion leadership and use of social networks for marketing, over 90 articles are studied and a comprehensive review of different studies in this area has been done. studies show that different titles such as opinion leader, influential people, market maven and key player are used to refer to influential groups in social networks. notwithstanding the...

In this paper, we examine cross-regional spillover effects in the Korean housing market, using the predictive directional spillover index and the connectedness measurement. The basic finding is that Seoul has been the most influential market in Korea among various combinations of regional housing markets. We also presented evidence that other metropolitan cities affect only neighboring regions....

The biological hypothesis that the astrocyte-secreted cytokine, interleukin-6 (IL6), stimulates differentiation of adult rat hippocampal progenitor cells (AHPCs) is considered from a mathematical perspective. The proposed mathematical model includes two different mechanisms for stimulation and is based on mass-action kinetics. Both biological mechanisms involve sequential binding, with one path...

This paper is focused on minimization of the burr height and Tool wear in drilling of Aluminium Metal Matrix Composites(AMMC) using “Desirable-Fuzzy” approach, which is developed by combining the Desirability Function Analysis and Fuzzy Logic. AMMC samples are prepared based on selected material parameters and drilling experiments are conducted on these samples as per Taguchi OA L27 which is de...