In this paper, cointegration relationships among 26 global stock market indices over the periods of sub-prime and European debt crisis and their influence rank are investigated by constructing and analyzing directed and weighted cointegration networks. The obtained results are shown as follows: the crises have changed cointegration relationships among stock market indices, their cointegration r...

Occlusal disharmony is induced by various conditions such as the loss of teeth and inappropriate vertical dimension of crowns, bridges, or dentures. Occlusal disharmony sometimes causes indefinite complaint syndromes, which may be associated with astrocytic hypertrophy and the reduction of numbers of neuronal somata and their dendritic spines in the hippocampus. Microglia monitors the condition...

We synthesize the financial crisis contagion literature through the gravity model from physics and test the hypothesis that the severity of contagion relates positively to trade and financial linkages but negatively to psychic distance between countries, when macroeconomic fundamentals and institutional factors are controlled. The psychic distance variable, a behavioral predictor constructed al...

Supplying chain cooperation has already become an important strategy that enterprises use to tackle market competition; however, the supply chain crisis caused by supply chain risk makes the supply chain operation of enterprises very fragile. This paper applies Portfolio Theory to explain the suppliers’ combination plays an important role in dispersing the supplying chain risk and controlling i...