University of Minnesota, Duluth
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Cherry yield depending on the climatic conditions of the cultivation years
No full textDuring the research as a result of the complex use of mathematical statistics methods, 20 paired correlation dependencies were analyzed at the stages: vegetation period, flowering, fruit ripening and during harvesting. Ten weather factors have determined their impact on cherry yield for the period 2007-2019. The calculated cherry yield model under the influence of abiotic weather factors has the following form: Y=4,040-0,634X2+0,054X4+0,3281X6+0,670X7-1,122X8-0,755X9-0,392X10 The development of the latter made it possible to predict the cherry yield depending on the influence of stressful environmental factors
Modeling of the separation process of bulk material according to its physical and mechanical properties
No full textThe bulk material separation process was investigated in three stages of modeling in the STAR-CCM +. The first step was to simulate the process of bulk material moving under the action of airflow. The second stage was aimed at modeling the process of moving the bulk material under the action of a vibrating sieve. The task of the third stage of modeling was to determine the particle distribution function of the bulk material by fractions under the action of a vibrating surface
Strategic management of environmental risks as a direction of ensuring sustainable ecological and economic development
No full textThe article deals with the problems of risk reduction and mitigation of natural and anthropogenic emergencies in Ukraine, which are of paramount importance and are a priority area of national security. It is proved that in the process of transformation of risks in the environment, their characteristics can change. It is established that strategic environmental assessment plays a leading role in the process of strategic environmental risk management
Formation of aboveground mass and sunflower yield under the influence of certain elements of cultivation technology
No full textThe article presents the results of studies conducted on the southern soil in the south 2016-2018 with sunflower culture. The article presents the results of study of resource-saving approaches to plant nutrition through the use of state-of-the-art regrowth preparations, their effect on the growth processes of sunflower plants, their accumulation of aboveground biomass, and the formation of seed yields. High efficiency of foliar feeding of the investigated preparations in all years of cultivation and especially in unfavorable climatic conditions is determined
Foreign economic security of enterprises in the agricultural sector in the system of national security of the state: theoretical aspect
No full textThe article investigates and generalizes the interpretations of scientists and practitioners on such categories as "national security", "economic security", "foreign economic security" in order to form a systematic understanding of the essence of foreign economic security of agricultural enterprises and to determine appropriate security characteristics. The role of the external economic component in the activities of agricultural enterprises has been updated because they are subject to the influence of a wide range of exogenous factors due to the development of internationalization and globalization processes. The system of national security with reflection of logical connections between its main components was formed and the place of foreign economic security of agricultural enterprises was determined
Financial market functioning and development in the conditions of digitalization of the society
No full textThe functioning and development of the financial market in the conditions of digitalization of society are investigated, in particular the classification of subjects and objects of the financial market is determined, the state of the financial market is analyzed, the index of the Herfindel-Hirschman financial market entities is determined, the financial market development, the latest digital financial technologies were develope
Economic efficiency of cultivation of pumiselect clone root in commodity nursery
No full textThe article highlights the results of the study of industrial technological models of growing clonal rootstocks for legumes by cuttings. The efficiency of the basic stages of cultivation (vertical cuttings, horizontal cuttings, uterine cuttings, nursery) was established. The problems that arise in the process of production of cuttings according to different technological models are highlighted, and the directions of their solution are offered taking into account the specifics of the region and culture. The advantages of the promising direction of growing the rootstock pumiselect with woody cuttings are proved and substantiated
Social and economic risk of household poverty in Ukraine
No full textThe essence of the concept of risk and the classification of social risks of households are investigated. The sociodemographic characteristics of Ukrainian households are analyzed. The main indicators, profiles, signs of poverty and directions of economic deprivation are analyzed. The most influential factors that increase risk are identified. They include large families, unemployment, level of education. The impact of COVID-19 on the growth of social risks is analyzed. The poverty is expected to increase in all types of Ukrainian households (especially in households with children) and increase in unemployment
Energy evaluation of sorghum growing technology in the South of Mykolaiv region
No full textIn the conditions of a high drought of climate of the Nikolaev area and fluctuations of temperature on years the important direction of increase of productivity of arable land is cultivation of drought-resistant cultures and improvement of the technological receptions directed on creation of highly productive agrocenoses. Sorghum is a crop that can withstand high temperatures and prolonged droughts: to consume one kg of dry matter, it consumes almost 1.5 times less water than corn and 2 times less than cereals. Its value is also due to the versatility of use, the ability to give stable yields, the possibility of growing on unproductive soils. This article evaluates the energy efficiency of growing sugar and grain sorghum in the context of climate change
Fine elastic circular inclusion in the area of harmonic vibrations of an unlimited body under smooth contact
No full textThe problem of the interaction of harmonic waves with a thin elastic circular inclusion, which is located in an elastic isotropic body (matrix), is solved. On both sides of the inclusion between it and the body (matrix), the conditions of smooth contact are realized. The solution method is based on representing the displacements in the matrix through discontinuous solutions of the Lamé equations for harmonic vibrations. This made it possible to reduce the problem to Fredholm integral equations of the second kind with respect to functions associated with jumps in normal stress and radial displacement to included ones. After the realization of the boundary conditions on the sides of the inclusion, a system of singular integral equations is obtained to determine these jumps