scholarly journals Investigation of the dependence of small rivers on the state of bottom sediments by mathematical methods

2020 ◽  
Vol 862 ◽  
pp. 062049
Author(s):  
E V Nafikova ◽  
I V Dorosh ◽  
D V Alexandrov
Keyword(s):  
Bottom Sediments ◽  
The State ◽  
Small Rivers ◽  
Mathematical Methods

scholarly journals Method of restorating water level of small rivers

2021 ◽  
Vol 273 ◽  
pp. 05007
Author(s):  
Evgeny Kuznetsov ◽  
Anna Khadzhidi ◽  
Larisa Motornaya ◽  
Kharlampiy Kilidi ◽  
Maxim Filimonov ◽  
...  
Keyword(s):  
Water Level ◽  
Bottom Sediments ◽  
High Water ◽  
The State ◽  
Small Rivers ◽  
Water Volume ◽  
Coastal Landscape ◽  
Coastal Landscapes

The article presents method for restoring the water level of small rivers that are subjected to degradation on the example of section of the Meklet River. To assess the degradation of rivers, there is proposed method based on maintaining balance between bottom sediments removed from the riverbed and the water volume in the prism of coastal landscape flooding during high water. The methodology for calculating the amount of silt shifting can be used to monitor the state of river beds. When forming coastline on inconvenient coastal landscapes as enclosing structures, the method allows the use of flexible tanker shells filled with excavated bottom sediments.

THE HYDROECOLOGICAL STATUS OF SMALL HISTORICAL RIVERS LYBED AND POCHAYNA IN THE BASIN OF THE DNIEPER AND VOLGA AT THE BEGINNING OF THE XXI CENTURY

2019 ◽  
pp. 74-88
Author(s):  
V.K. Khilchevskyi
Keyword(s):  
Water Content ◽  
Middle Ages ◽  
Urban Infrastructure ◽  
The State ◽  
Volga Basin ◽  
Survey Study ◽  
Small Rivers ◽  
Heritage Sites ◽  
The Russian Federation ◽  
The Right

A survey study of the general hydroecological status of the historical small rivers of the same name Lybed and Pochayna, known since the Middle Ages (10th-11th centuries) in the Dnieper basin in Ukraine and in the Volga basin in the Russian Federation (RF), has been carried out. These rivers, many centuries ago, were natural objects around which cities formed, and in our time they turned out to be “absorbed” by cities. The state of six small rivers was analyzed: Lybed and Pochayna – tributaries of the Dnieper, Kiev, Ukraine; Lybed and Pochayna – Klyazma tributaries (Volga basin), Vladimir, Russia; Lybed – a tributary of the Oka (Volga basin), Ryazan, Russia; Pochayna – a tributary of the Volga, Nizhny Novgorod, Russia. According to hydromorphological indicators of the state of the rivers (catchment area and water content), the studied ones relate to rivers of very small size and very low water content. A significant part of the channel of these rivers is enclosed in a reservoir (41-100%). The hydroecological condition of these rivers is unsatisfactory, water is prone to pollution. The Pochaina River – a tributary of the Dnieper in Kiev (Ukraine) and the Pochaina River – a tributary of the Volga in Nizhny Novgorod (RF) turned into lost natural heritage sites. Given the involvement in urban infrastructure, the morphometric parameters of the six rivers considered are the greatest prerequisites for being more or less revitalized in the river Lybed – the right tributary of the Dnieper in Kiev (Ukraine).

scholarly journals ASSESSMENT OF THE FINANCIAL SSESSMENT OF THE FINANCIAL SECURITY LEVEL OF UKRAINE

2021 ◽  
Vol 17 (6) ◽  
pp. 3-12
Author(s):  
O. KALINICHENKO ◽  
V. LESYUK
Keyword(s):  
National Economy ◽  
Large Scale ◽  
Foreign Currency ◽  
Well Being ◽  
The State ◽  
Security Level ◽  
Financial Security ◽  
Mathematical Methods ◽  
Security Strategy ◽  
Banking Systems

Introduction. In the context of the development of globalization processes and the integration of the national economy into the global financial space, the issue of forming the financial security of Ukraine becomes increasingly important. It affects and links together all sectors of the national economy, business entities, society, politics, finance, etc.Problem Statement. At the present stage of Ukraine's economic development, one of the primary task of government policy is to ensure the financial security of the state, after all, its ensuring aims at overcoming the economic crisis and improving the well-being of Ukrainian citizens.Purpose. The assessment of the financial, monetary, and banking systems of Ukraine as well as the development of practically significant proposals are necessary for ensuring the financial security of Ukraine.Materials and Methods. The analytical material is the data of the National Bank of Ukraine, which have been studied by economic and mathematical methods, statistical and indicative analysis.Results. It has been determined that the state budget imbalance is the main destabilizing factor of the crisis in public finance. The dynamics of the number of banks in Ukraine have been studied: despite a decrease in the number of banks with foreign capital, their share in recent years has increased significantly, which hinders theeffective development of the banking system of Ukraine. A significant underestimation of the domestic currency and large-scale devaluations in the previous years created unfavorable conditions for Ukrainian exporters, which resulted in a foreign trade balance deficit, an outflow of foreign currency and, accordingly, a decrease in theforeign exchange reserves.Conclusions. The financial security strategy should determine the prospects for ensuring the stability of the financial, monetary, and banking systems and the development of the national economy. The implementation of financial, currency, credit measures, the adoption of amendments to the legislative framework, and the development of a financial security strategy for Ukraine become increasingly important, given the problems that exacerbate the financial security of Ukraine.

Methodical approaches to the analysis of the state of urbanized systems

2020 ◽  
pp. 18-26
Author(s):  
Natalya Lysyak
Keyword(s):  
Factor Analysis ◽  
Spatial Analysis ◽  
System Analysis ◽  
Systems Approach ◽  
Urban System ◽  
The State ◽  
Urban Systems ◽  
Mathematical Methods ◽  
Analysis And Synthesis ◽  
Population Forecasting

The methodological bases of the analysis of the condition of urbanized systems are substantiated in the article by means of methods of system analysis. Based on the model of the urban system, the available methods of research of the development of urban systems are singled out and characterized. The system of methods used to study urban systems includes methods of economic, social, spatial analysis, universal methods. For today's conditions, general scientific and special methods, which include economic and mathematical methods, methods of statistical analysis, and factor analysis, have remained relevant and suitable for solving socio-economic problems. Well-known and widely used methods of spatial analysis and synthesis will remain relevant, in particular, population forecasting and determining the demographic capacity of the territory; factor-by-factor analysis and comprehensive assessment of the territory; calculation of traffic flows and transport capacity in the territory and in cities; minimization of territorial ties; assessments of urban systems; location of service facilities, delineation of their radii of accessibility, etc. A separate group includes universal research methods suitable for the study of all dimensions of the system. Using a systems approach, our own method of analyzing the state of urban systems is substantiated. The method of analysis of the state of the urban system is based on four components of the system: human, spatial, social, and temporal. The economic component is a priority. Quantitative and qualitative relationships between economic and spatial, social, and temporal characteristics of the system are revealed. The combination of dimensions forms a set of combinations for the analysis of the economy of the urban system, in particular, there are socio-economic, spatial-economic, economic-temporal, and socio-spatial sections. Characteristics of individual dimensions and their interaction allow to organize information about the state of the system, to determine the tasks of the socio-economic and spatial development of cities, to reveal the possibilities of their system analysis.

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