Identification of earthquake precursors in the hydrogeochemical and geoacoustic data for the Kamchatka peninsula by flicker-noise spectroscopy

A phenomenological systems approach for identifying potential precursors in multiple signals of different types for the same local seismically active region is proposed based on the assumption that a large earthquake may be preceded by a system reconfiguration (preparation) at different time and space scales. A nonstationarity factor introduced within the framework of flicker-noise spectroscopy, a statistical physics approach to the analysis of time series, is used as the dimensionless criterion for detecting qualitative (precursory) changes within relatively short time intervals in arbitrary signals. Nonstationarity factors for chlorine-ion concentration variations in the underground water of two boreholes on the Kamchatka peninsula and geacoustic emissions in a deep borehole within the same seismic zone are studied together in the time frame around a large earthquake on October 8, 2001. It is shown that nonstationarity factor spikes (potential precursors) take place in the interval from 70 to 50 days before the earthquake for the hydrogeochemical data and at 29 and 6 days in advance for the geoacoustic data.Comment: 8 pages, 4 figures; to be published in Nat. Hazards Earth Syst. Sc

ПЕРСПЕКТИВЫ РАЗВИТИЯ ЗАРУБЕЖНЫХ ТНК НА РОССИЙСКОМ ТОПЛИВНО-ЭНЕРГЕТИЧЕСКОМ РЫНКЕ

The methodological and methodical basesof research of foreign MNC’s on Russian fuel and energy market are stated in thearticle. The great attention is focusedon analysis of dependence of the Russian economy from foreign MNCs. Thecomparison of competitiveness to activityof foreign MNC’s in other sectors of the Russian economy. It is marked basicproblems and barriers of foreign TNCsactivities in the Russian fuel and energymarket, as well as the main advantagesand disadvantages for Russia as for thehost country.Встатьеизлагаютсяметодологические и методические основы исследования деятельности зарубежных ТНК на топливно-энергетическом рынке России. Основное внимание сосредоточено на исследовании показателей вовлеченности зарубежных ТНК в экономику России. Проводится сопоставление с деятельностью зарубежных ТНК в других отраслях экономики России. Выделеныосновныепроблемыибарьеры деятельности зарубежных ТНК на российском топливно-энергетическом рынке, а так же основные преимущества и недостатки для России, как для принимающей стороны

СОВРЕМЕННЫЕ ТЕНДЕНЦИИ РАЗВИТИЯ МЕЖДУНАРОДНОГО ПРЕДПРИНИМАТЕЛЬСТВА

The methodological bases of researchof international business are stated in the article. The great attention is focused on analysis of main trends in development of international. The comparison of competitiveness to of most used forms ofinternational business, as well as identified the main problems and barriers of theinternational business structures.Встатьеизлагаютсяметодологические основыисследованиямеждународного предпринимательства. Основное вниманиесосредоточенонаисследовании тенденций развития международного предпринимательства. Проводится сопоставление наиболее часто используемых форм международного предпринимательства, а так же выделены основные проблемы и барьеры функционирования международных предпринимательских структур

Comparative Analysis of the Dynamical Spectra of a Polarization of an Active Medium and an Electromagnetic Field in the Superradiant Heterolasers

The complicated pulsed generation regimes of a CW-pumped superradiant semiconductor laser are analyzed via the dynamical spectra of the dipole optical oscillations of active centers. This novel approach appears to be more informative than the standard analysis of the dynamical spectra of laser emission if a dipole relaxation rate is less than a cavity relaxation rate. The advantages of the method are demonstrated for a number of superradiant lasing regimes on the basis of the numerical solution to 1D Maxwell–Bloch equations for a two-level active medium in a low-Q cavity within one-dimensional approximation

AMBIGUITIES ELIMINATION AT IDENTIFICATION A FEW DYNAMIC OBJECTS IN ANALYSIS OF ENERGY CHARACTERISTICS

An algorithm for manipulating pixels of image is proposed. It is used to modify the method of identifying several dynamic objects

МОДЕЛЬ РАСПРОСТРАНЕНИЯ УДАРНОЙ ВОЛНЫ В КОММУНИКАЦИОННЫХ ПОМЕЩЕНИЯХ

The paper offers a physical model of the formation and propagation of a shock wave in the communication premise as in the channel with walls of different rigidity. The authors prove a need for the installation of blast relief panels in communication premises of buildings with increased explosion hazard.Запропоновано фізичну модель утворення й поширення ударної хвилі в комунікаційному приміщенні як у каналі зі стінками різної жорсткості. Обґрунтовано необхідність улаштування легкоскиданих конструкцій у комунікаційних приміщеннях будівель із підвищеною вибухонебезпекою