Travel times for simple trips and cycles are analyzed for a storage/retrieval machine working in a one-dimensional or two-dimensional zone with taxicab geometry. A semi-random trip is defined as one-way travel from a known to a random location or vice versa. A random trip is defined as one-way...

One of the indirect statistical methods for evaluating the asymmetry of the data between partner countries in the realization of foreign trade activity is the so - called method of „mirror compar isons”. Its use permits the bringing out „in the daylight” a large part of contraband import...

The article is devoted to the terri torial as well as the class and professional disproportions, observed in the dynamics of employment in Bulgaria for the period 2007 - 2010. Adopting an untraditional research approach there has been made a comparative analysis and assessment of the impact, w...