Модели обслуживания заказов портфеля с учетом рисков задержек выплат контрактных сумм
The current situation in the world economy has a significant impact on the imbalance in the use of different types of natural resources. International energy supply chains are a crucial element of energy security, and their sustainability affects market conditions in most countries. The primary purpose of this article is to form the foundations of the theory and methodology of supply chain management of pipeline transport. Authors identified opportunities for the application of the method of the logistics to pipeline transport systems. By analyzing the features of pipeline transport in general, the authors propose the use of methods and models of logistics and supply chain management in the planning of the oil and gas transportation systems, taking into account the characteristics of flows while using this type of transport.
Supply chains developed through participation of foreign suppliers exert considerable influence on countries’ insertion into global value chains (GVCs). Close relationship between supply and value chains makes it possible to use statistical data on GVCs to get complex picture of supply chain dynamics in various economic sectors. The ultimate goal of the research is to uncover and explain specifics of supply chains development in leading oil refining exporting countries based on the value-added statistics. Analysis of countries’ backward participation in GVCs allows to understand development as well as industrial and regional structure of supply chains, into which national producers integrate as buyers of components. Leading oil refining exporters demonstrate different levels of national production dependence on foreign suppliers. The main factor that influences globalization of supply chains is a presence of advanced oil production industry in the country. World leading oil producers, Saudi Arabia and Russia, depend on foreign supplies to a minimum extent. USA, which are currently intensively expanding oil extraction, reduce offshore deliveries of resources. India and the Netherlands with low oil production volumes as well as Singapore and Korea with no oil extraction at all are forced to supply oil and other oil refining components – chemicals, equipment, machinery, from abroad. Countries’ forward participation in GVCs together with the statistics on origin of value added in final demand allows to conduct analysis of national companies’ participation in foreign producers’ global supply chains as sellers of components. From geographical point of view consumption of oil refining products, supplied by leading oil refining exporters to the international market, is concentrated in the domestic regions of the countries. This fact indicates the regional character of global supply chains. Supplies of oil refining from the Netherlands and Russia show the highest degree of regionalization, while supplies from the USA and India the lowest. The sectoral consumption of oil refining shows similar structure for all analyzed countries – around half of the consumption occurs in international manufacturing sector, about quarter goes to business services sector, significant role in consumption plays global construction industry. The research results may be used by companies to make strategic decisions on logistics and supply chains, and by governmental bodies to develop measures to regulate foreign operations of national producers.
The success of any logistics provider under the development of a digital economy directly depends on the decision-making system, taking into account the dynamic nature of the environment and the optimal construction of the internal structure. In an effort to ensure a stable economic position in a competitive market, they pay more attention to both process monitoring, management system analysis and forecasting tasks. At the same time, classic models based on imitating modelling of processes and systems are proposed; for the study of control models, it is necessary to supplement the analysis based on structural diagrams and dynamic links. The use of dynamic links significantly expands the functionality of modelling methods and allows not only to investigate the stock turn, but also to simulate the control actions on the system to achieve the specified parameters. Modelling processes based on dynamic links allows us to investigate the stability of logistics systems, to assess the impact of disturbances on the system and elements. The proposed management model for the logistics system is implemented according to the feedback control principle, which additionally contributes to the formation of a more accurate decision-making system. The developed model has the ability to scale for different levels of planning and takes into account the dynamic nature of the processes in the logistics system, taking into account the influence of the environment. The article additionally outlines the limits of application of simulation modelling in the AnyLogic environment for the study of control systems, which substantiates the practical importance of using structural diagrams and dynamic links for logistic systems.