Производственные функции газодобывающей промышленности Республики Саха (Якутия) в 1968–2008 гг.
The subject of this econometric study was the production functions of natural gas production industry in Sakha Republic (Yakutia) for 1968-2008. The production functions can be applied for short-term and medium-term natural gas production forecasting by the Sakha Republic Council of Ministers as well as by regional gas production companies.
The article analyzes the internal and external connectivity of passenger transport systems in Russian regions with vast peripheral areas based on a case study of three key regions with average and low development levels—Krasnoyarsk krai, the Sakha Republic (Yakutia), and Magadan oblast. These regions differ from each other by their position in the country’s transport system and are characterized by significant intraregional differences in the level and nature of transport connectivity. To solve this problem, the authors use an integrated methodology to analyze transport connectivity and isolation. This approach includes not only analysis of statistics on transport networks, frequency, time expenditures, and fares for all modes of passenger transport in regions, but also qualitative sociological methods: in-depth interviews with passengers and employees of transport terminals. Differences in the accessibility of the main regional settlements are determined, and transport areas differing from each other in terms of transport reliability are distinguished. The public transport systems of the studied regions are notable for the low regularity of connections, the absence of alternatives along many routes, occasional and insufficient reliability of transportation due to the pronounced seasonal nature, as well as the important role of implicit (shadow) transport services
We consider certain spaces of functions on the circle, which naturally appear in harmonic analysis, and superposition operators on these spaces. We study the following question: which functions have the property that each their superposition with a homeomorphism of the circle belongs to a given space? We also study the multidimensional case.
We consider the spaces of functions on the m-dimensional torus, whose Fourier transform is p -summable. We obtain estimates for the norms of the exponential functions deformed by a C1 -smooth phase. The results generalize to the multidimensional case the one-dimensional results obtained by the author earlier in “Quantitative estimates in the Beurling—Helson theorem”, Sbornik: Mathematics, 201:12 (2010), 1811 – 1836.
We consider the spaces of function on the circle whose Fourier transform is p-summable. We obtain estimates for the norms of exponential functions deformed by a C1 -smooth phase.