Динамика кластерных структур в сетях фондовых рынков
The article presents the results of experimental and theoretical studies of the dynamics of the process of electric discharge sawing by wire tool electrode aimed at solving problems of control
Using data on foreign borrowing, I identify Russian banks that were affected by the sudden stop of external financing caused by the Lehman Brothers’ collapse. Applying the difference-in-difference method, I compare these «affected» banks to «unaffected» ones and find that the Russian Central Bank’s (CBR) anti-crisis financial assistance primarily went to the former group. Tracing the impact of the CBR’s liquidity infusions on banks’ portfolio allocation decisions, I find that banks used CBR funds not only to pay out foreign debt, but also to accumulate cash deposits in non-resident banks. I also find that affected banks increased their holdings of market securities significantly more than unaffected ones, which suggests that the CBR’s bailout policies impacted their risk-taking strategies. While there was no significant difference in corporate lending growth between the two groups after the sudden stop, lending to borrowers with weaker banking relationships (individuals and entrepreneurs) decreased more among affected banks.
In this paper we consider choice problems under the assumption that the preferences of the decision maker are expressed in the form of a parametric partial weak order without assuming the existence of any value function. We investigate both the sensitivity (stability) of each non-dominated solution with respect to the changes of parameters of this order, and the sensitivity of the set of non-dominated solutions as a whole to similar changes. We show that this type of sensitivity analysis can be performed by employing techniques of linear programming.
The paper examines the structure, governance, and balance sheets of state-controlled banks in Russia, which accounted for over 55 percent of the total assets in the country's banking system in early 2012. The author offers a credible estimate of the size of the country's state banking sector by including banks that are indirectly owned by public organizations. Contrary to some predictions based on the theoretical literature on economic transition, he explains the relatively high profitability and efficiency of Russian state-controlled banks by pointing to their competitive position in such functions as acquisition and disposal of assets on behalf of the government. Also suggested in the paper is a different way of looking at market concentration in Russia (by consolidating the market shares of core state-controlled banks), which produces a picture of a more concentrated market than officially reported. Lastly, one of the author's interesting conclusions is that China provides a better benchmark than the formerly centrally planned economies of Central and Eastern Europe by which to assess the viability of state ownership of banks in Russia and to evaluate the country's banking sector.