Modeling of material flow management processes in the formation of transport logistics chains

The article proposes a mathematical model for optimizing the interaction of road and sea transport. The model allows to optimize the process of material flow management in the formation of transport logistics chains. The solution to this problem is especially important given the observed growth of competition between operators carrying out cargo transportation along international transport corridors. The application of the model is aimed at reducing the idle time of both vehicles waiting for unloading in the port, and reducing the idle time of ships awaiting loading of ships in ports. The relevance of using the proposed model is based on the constant growth of cargo traffic going through the ports, as well as the existing restrictions expressed in the lack of space for storing goods in anticipation of the arrival of ships in most modern ports participating in international cargo transportation, in addition, an important factor is that in most of these ports the time the passage of trucks to the port is regulated by certain hours of the day.

PLANNING OF VOLUMES OF SUPPLIES OF MATERIAL RESOURCES IN CONSTRUCTION

Introduction. In organizational and technological documents the issues of transport provision with material resources of construction objects are considered without sufficient substantiation. In the article the task of supply volume planning is coordinated with the internal capabilities of the construction organization and with external conditions, and then formulated in the form of a mathematical model of linear programming. The principles of planning are defined, external and internal restrictions on the choice of the plan are formulated. The planning model developed by the author will allow to increase the organizational level of material flows management, will provide continuity and uniformity of production of works, consumption of materials, products and designs. Purpose of the article is to develop a effective model for the management of material flows in construction. Method (methodology). In the process of developing and substantiating the results of the study, the following research methods were actively used: analysis, synthesis, modeling, logical, systematic approach, methods of deduction and induction, as well as observation, measurement, comparison, experiment. Results. The main factors of ensuring the efficiency of material flow management are determined, a mathematical model of linear programming is developed, aimed at increasing the organizational level of material flow management in construction organizations.