Forecasting regional cellular communication markets

The paper examines the problem of modeling of regional cellular communication markets. It analyzes the situation in several regions to reveal common patterns, because knowledge of the dynamics of more advanced regions can be used as the basis of forecasts for other regions. A model is proposed to refine forecasts if some special changes are detected in the regional market behavior. The notion of “allied” market is introduced and a forecast based on the “allied” regional market path is offered using Kurgan oblast as a case study.     

Portfolio selection subject to experts' judgments

Since Markowitz [Markowitz, H. M. (1952). Portfolio selection. The Journal of Finance, 7, 77-91.], mean-variance theory has assumed that risky-asset returns to be random variables. The theory deals with this uncertainty by further assuming that investors hold homogeneous beliefs regarding the probability distribution governing return uncertainty. While the theory deals with return uncertainty, it fails to address measurement imprecision. In his original work, Markowitz recognized the need to combine randomness with heterogeneous expert judgment resulting in such imprecision. The main objective contributions of the paper are (i) to explore the implications of fuzzy return indeterminacy on mean-variance optimal portfolio choice, (ii) to use bid-ask spread as a proxy measure of the indeterminacy or “fuzzy” nature of random returns, and (iii) to introduce a brief, self-contained glimpse of empirical representations to practitioners unfamiliar with the fuzzy modeling field. Exposition, such as this one, is expected to open new collaborations between other branches of fuzzy mathematics and asset-pricing theories.     

ON INTERNATIONAL TRADE IN BANKING SERVICES

In order to examine theories of domestic and international trade in banking, information is presented in this paper on the vast array of service charges banks levy on their customers, both resident and non-resident, and the complex of interest rates on deposits and loans that must be collected. Examination is also necessary of collection procedures of the various charges which central banks levy on banks, as well as interest rates paid on reserves, insurance premia on deposits and the like in order to test propositions that international trade in banking is a function of the various monetary policies followed by Monetary Authorities.     

Local Return Factors and Turnover in Emerging Stock Markets

The factors that drive cross-sectional differences in expected stock returns in emerging equity markets are qualitatively similar to those that have been documented for developed markets. Emerging market stocks exhibit momentum, small stocks outperform large stocks, and value stocks outperform growth stocks. There is no evidence that high beta stocks outperform low beta stocks. A Bayesian analysis of the return premiums shows that the combined evidence of developed and emerging markets strongly favors the hypothesis that similar return factors are present in markets around the world. Finally, there exists a strong cross-sectional correlation between the return factors and share turnover.     

Informatization processes in the Volga Federal District regions: Current state and trends

The resource components of the informatization process in the Volga Federal District regions are surveyed. The authors made an integral estimation of the regional informatization potential using the method they had tested in practice. This allowed them to evaluate the level of the informatization process in individual regions and the effectiveness of regional policy in the advancement of high-tech sectors.     

Residential development in an open city

This paper investigates the residential development process using a dynamic model of an open city. The model is used to analyze how the density and timing of development at various sites respond to changes in exogenous trajectories and functions. In particular, the impact of income and equilibrium utility trajectory variations as well as transportation and construction cost changes are evaluated for the general model with no specific functional forms assumed. Sufficient conditions for predicted responses are derived and interpreted.