Descripción: “...The diversification exercise conducted with the selected actions from index HSI allowed to structure portfolios that maximize return for different risk levels and determine an efficient frontier that, in addition to being well above the HSI, is dominant compared to the efficient frontier shaped with the stock indices of the countries surveyed. ...”

Descripción: “...In the present work, we developed a new index, based on dominant frequency (DF) and organization index (OI), to identify these areas. ...”

Descripción: “...This are group are more dominate in semipermanent tropical ponds and temporally pond, respectively. ...”