Professional education in tourism: problems of the regional level

The article reveals the main problems of professional education in the sphere of tourism at the regional leve

Identification of the risks of consumer credit cooperatives

Various types of classification of risks of credit consumer cooperatives have been considered. The author’s approach to the classification of cooperative risks based on the account of losses associated with risk situations has been adduced. It has been proposed to carry out a quantitative risk assessment, which is demonstrated by the example of the assessment of various types of savings risk. Directions of reduction of risks of losses of credit consumer cooperatives have been designated. The necessity of identification of risks of credit consumer cooperatives for substantiation of strategy and tactics of cooperative development has been emphasized

Changes in the structure and dominance of the zooplankton community of the Kremenchuk Reservoir under the effect of climate changes

Zooplankton plays an important role in aquatic food webs and changes in its abundance and diversity under changing climatic conditions can significantly affect the abundance and diversity of other aquatic organisms. The aim of the study was to assess quantitative and qualitative parameters of zooplankton development, dynamics of development of its dominant groups and the effect of water temperature. Species composition and abundance of zooplankton of the Kremenchuk Reservoir were studied in 2006, 2010–2012 and 2020 in relation to water temperature and pollution. Zooplankton species diversity fluctuated significantly over the years of the study. A total of 46 taxa were recorded in the reservoir during the study period. The number of recorded zooplankton taxa ranged 26 to 32 depending on the year. The most abundant zooplankters were Chydorus sphaericus, Copepoda nauplii, Brachionus diversicornis. The abundance of zooplankters in the reservoir during the study period ranged 23·103 to 256·103 ind./m3, and biomass 0.14 to 0.89 g/m3. A significant positive relationship was observed between the abundance of cladocerans, including some individual species (Ch. sphaericus and Ceriodaphnia sp.), and water temperature. Indicator species of water pollution in different years and in different parts of the Kremenchuk Reservoir differed significantly, which probably depended on the presence or absence (in a certain period of time) of polluting discharges. The total saprobity index in different years in different parts of the reservoir was in the range of 1.5–1.9. Structural indicators of zooplankton and its dominant complexes characterize the water in the Kremenchuk Reservoir as β-mesosaprobic. It is probably too early to assess the impact of climate change zooplankton as these changes are still unstable and short in time, but it is necessary to constantly monitor the biota of aquatic ecosystems to further study and summarize the data, which could later allow an identification of such changes

Agrobiological evaluation of Allium ampeloprasum L. variety samples in comparison with Allium sativum L. cultivars

ArticleThe purpose of investigation is to study the biological and morphological features, to establish the economic and valuable characteristics of the introduced and local forms of Allium ampeloprasum L. in comparison with Allium sativum L. and to study the effect of removal of the scape in the yield. The studies used field, statistical, settlement and analytical methods. The weight of the bulb without removing the inflorescence shoot of the cultivar Sofiivskyi was 28.4– 53.3 g smaller than the variety samples No. 2 and No. 3 respectively. With removing the scape the difference increased by 60.5–68.6 g. The yield of No. 2 variety sample Allium ampeloprasum L. without removing the scape was lower than the standard by 1.7 t ha-1 while the variety sample No. 3 exceeded the standard by 1.1 t ha-1 . With the removal of inflorescence shoot the yields of variety samples No. 2 and No. 3 exceeded the cultivar Sofiivskyi by 1.6 and 2.2 t ha-1 . It has been established according to the researches that introduced forms of Allium ampeloprasum L. have high indicators of economic and valuable characteristics, but they are limited in the first years of cultivation, by the period of adaptation to the new soil and climatic conditions

Experimental Study of the Effect of External Signal on Microwave Oscillations in a Nonrelativistic Electron Beam with Virtual Cathode

The effect of an external harmonic signal on the characteristics of microwave generation in a nonrelativistic electron beam with virtual cathode (VC) formed in a static retarding electric field (low-voltage vircator system) has been experimentally studied. A significant increase in the vircator generation power is observed when the frequency of the external signal is close to the frequency of VC oscillations. At large detunings, a broadband chaotic generation is observed.Comment: 3 pages, 2 figure

METHODICAL APPROACHES TO FORMING INNOVATIVE PROJECT AND ENTERPRISE MANAGEMENT ORGANIZATIONAL STRUCTURES

The following principles are discussed as methodical bases of the choice of innovative project and enterprise management organizational structures: hierarchism, bureaucratization, adhocratie, tent organization, lean business engineering, rational organization, amorphous organization, teaching organization. Conditions that complicate industrial and technological processes influence enterprise management process dynamics. The variety of existing types of organizational structures is determined by industrial, economic, psychological and social conditions

DEFINITION OF BORDERS OF UNSTABLE DETONATION OF NATURAL GAS IN GAS-STANDING INSTALLATIONS

Разработан метод расчетного определения степеней сжатия природного газа на границах трех областей: бездетонационной, с нестабильной детонацией и гарантированной (100 %-ной) детонацией. Полагается, что температура самовоспламенения природного газа с высоким содержанием метана (96–98 % по объему) полностью определяется температурой самовоспламенения метана. Границы области нестабильной детонации графически находились как точки пересечения кривой изменения температуры при сжатии газовой смеси с кривыми верхнего и нижнего пределов температуры самовоспламенения этой смеси при различных степенях сжатия

BTZ Black Hole as Solution of 3d Higher Spin Gauge Theory

BTZ black hole is interpreted as exact solution of 3d higher spin gauge theory. Solutions for free massless fields in BTZ black hole background are constructed with the help of the star-product algebra formalism underlying the formulation of 3d higher spin theory. It is shown that a part of higher spin symmetries remains unbroken for special values of the BTZ parameters.Comment: 31 pages, LaTeX; references correcte

ФОРМИРОВАНИЕ ВНЕШНЕЭКОНОМИЧЕСКОЙ СТРАТЕГИИ РЕГИОНА В УСЛОВИЯХ ЧЛЕНСТВА РОССИИ В ВТО

Provides an overview of the basic obligations assumed by Russia in connection with the entry into the WTO. The history of Russia's integration with the WTO and the formation of the EurAsEC Customs Union. Assessed the possible impact of Russia's WTO accession on the economy of regions with a view to improving export opportunities and local industry to compete with imports of foreign manufacturers. The mechanism of the formation of the region's foreign economic strategy in the new economy.Представлен обзор основных обязательств, которые взяла на себя Россия в связи с вступлением в ВТО. История интеграции России с ВТО и формирование ЕврАзЭС, Таможенного  Союза. Дана оценка возможного воздействия вступления России в ВТО на экономику регионов с позиции улучшения экспорта и возможностей местной промышленности конкурировать с импортом зарубежных производителей. Представлен механизм формирования внешнеэкономической стратегии региона в новых экономических условиях