A simple model is proposed to mimic and study the evolution of interpersonal relationships in a student class. The small social group is simply assumed as an undirected and weighted graph, in which students are represented by vertices, and the depth of favor or disfavor between them are denoted...

System dynamics models are employed for analyzing the impact of different uncertainties on carbon emission trading–both on national and business levels. Economic, institutional and technological uncertainties significantly influence any country's benefits from emission permit trading. If a...

House prices crash has become an important feature of macroeconomic crisis. We argue that house prices crash driven by contractionary monetary policy is not only a reaction to crisis, but also accelerates and amplifies the fluctuations of major macroeconomic variable. In this paper, we conduct a...