Use of social capital among Russian managers of a new generation

Dynamic changes in the Russian political economy during the 1990s led to a unique combination of low levels of social capital at the general (state) level and very high levels of social capital at the interpersonal level. This research uses the three dimensions of social capital as outlined by Nahapiet and Ghoshal [Nahapiet, J. and Ghoshal, S. (1998) Social capital, intellectual capital and the organizational advantage. Academy of Management Review, 23, 242-266.], to investigate the operation of business networks within Russia. Focusing on a generation of Russian business managers who had minimal exposure to the previous regime and who experienced western education/business practices, this study illustrates one snapshot of social capital in Russia in 2004. Results highlight how this generation of business managers operates and how they conduct their business networks. It is expected that there will be changes in Russian business networks, as formalized legal systems become stronger and the new generation of Russian managers, who have had little exposure to socialist systems and nomenklatura emerge.     

Baltic Dry Index and iron ore spot market: dynamics and interactions

Baltic Dry Index (BDI) is often included in the iron ore spot price. Iron ore market experienced a transition in pricing mechanism from the annual negotiated price to the one based on spot market price in 2008/2009. This paper investigates the dynamics of and the interactions between BDI and iron ore spot price in the regime of the new pricing mechanism. In addition to controlled variables, we find significant spillover interactions between BDI and the iron ore market. We also detect mean-reversion movement in the iron ore market, signalling certain inefficiency in the market pricing.     

A note on the hedging effectiveness of GARCH models

This note compares the hedging effectiveness of the conventional hedge ratio and time-varying conditional hedge ratios (of which GARCH ratio is a special case). It is shown that, in large sample cases, the conventional hedge ratio provides the best performance. For small sample cases, a sufficiently large variation in the conditional variance of the futures return is required to produce the opposite result. The result is due to the fact that the hedging effectiveness measure is based upon the unconditional variance; meanwhile, the conventional hedge ratio minimizes the unconditional variance and the conditional hedge ratio aims at minimizing the conditional variance.