Analyzing the reasons of financial crises in "The Black Swans," N.N. Taleb concludes that modern economic models badly describe reality for they are not able to forecast such crises in advance.We tried to present processes on stock exchange as two random processes one of which happens rather...

In practice it is quite customary that an alternative is evaluated by means of n ≥ 2 grades x1, ..., xn, each of which taking an integer value from 1 («bad») to m ≥ 3 («perfect»). Thus, a problem arises to rank the set X of all n-dimensional vectors x with integer components from 1 to m....

Using the preference-based approach to power analysis of the International Monetary Fund from Aleskerov, Kalyagin & Pogorelskiy (2008), which allows for estimating the power of the IMF members within the Executive Board and the Fund in general through the existing constituency system, we explore...

Models of migrants' allocation over districts or regions in the country aiming to decrease or at least not to increase the existing polarization of the population are proposed. Arrival of new immigrants representing different cultures and nationalities increases the diversity in the host...

The issue of systemic importance has received particular attention since the recent financial crisis when it came to the fore that an individual financial institution can disturb the whole financial system. Interconnectedness is considered as one of the key drivers of systemic importance....

Data on economic, management and political science journals are used to produce quantitative estimates of (in)consistency of evaluations based on seven popular bibliometric indicators. This paper proposes a new approach to the construction of aggregate journal rankings: aggregation is considered...

We propose a new method for assessing agents' influence in financial network structures, which takes into consideration the intensity of interactions. A distinctive feature of this approach is that it considers not only direct interactions of agents of the first level and indirect interactions...

An analysis of journal rankings based on five commonly used bibliometric indicators (impact factor, article influence score, Source Normalized Impact per Paper, SCImago Journal Rank, and the Hirsch index) has been conducted. It is shown that despite a high correlation, these single...

Tornado prediction methods and main mechanisms of tornado genesis were analyzed. A model, based on the superposition principle, has been built. For efficiency evaluation, the constructed model has been tested on real-life data obtained from the University of Oklahoma (USA). It is shown that the...