modeling

The article analyzes the current state and key threats to environmental safety arising from pollution of water resources by oil and petroleum products. Emulsions and suspensions are complex dispersed systems that are widely used in industry. Their formation in the natural and industrial environment often leads to environmental problems, in particular, pollution of water bodies by oil-containing emulsions and solid particles. Effective separation of such systems remains a pressing issue.

At present, the problem of saving energy resources is more relevant than ever. The largest consumers of these resources are industrial enterprises, institutions and organizations, all of which are interested in the efficient use of electricity, heat, water and other resources. One of the key criteria for the effectiveness of any industrial production is its energy efficiency. Increasing energy efficiency is an essential factor for their optimal operation. Distillation plants are among such facilities.

The article presents a systematic study of the process of creating vector images using the IDEF0 functional modeling methodology. A formalized representation of the stages of construction and processing of vector graphics is proposed, taking into account the sequence of information transformation from a conceptual sketch to a finalized digital object. The input, output, control, and mechanism variables that determine the efficiency of the system’s functioning are analyzed. The contextual diagram reflects the main objective of the process.

The article considers modern approaches to modeling financial flows of domestic enterprises engaged in foreign economic activity during the economic crisis caused by military actions in Ukraine. In wartime, enterprises face significant difficulties in managing financial flows due to the instability of the economic environment, and, accordingly, to overcome these challenges, it is necessary to develop adaptive strategies that will ensure the stability of financial flows.

Last-mile delivery is the last element of the supply chain. It plays a key role in urban logistics processes related to the efficient and environmentally friendly transportation of goods within an urban area. The growth of e-commerce, the need to minimize the environmental impact of transportation, and the increasing demand for efficient delivery services require alternatives to traditional home delivery. Numerous studies suggest that the use of parcel locker networks helps optimize transportation and reduce logistics costs.

The main purpose of system-oriented measuring instruments (MI) is to ensure automated collection, processing, analysis and transmission of measurement data as part of complex information and measurement systems. Such MI are used in automated production systems, intelligent measuring systems, in the control of technological processes and in conducting scientific research, etc. The main properties of system-oriented MI are provided by a combination of modern hardware, powerful digital processing algorithms and integration into automated systems.

This work is dedicated to the development of a macromodel for the virtual signal simulator of adaptive acoustics, Data@Sim, based on the formal analogy method. The structure of modeling electro- acoustic processes in adaptive acoustics tasks and approaches to the unification of research on electrical and acoustic signals are presented. An algorithm for synthesizing virtual signals that accounts for temporal parameters of sound wave propagation and attenuation, as well as noise and interference effects, is proposed.

The article is devoted to researching reliability and fault tolerance management mechanisms in infocommunication networks, focusing on modeling and testing of gateway redundancy protocols. The work considers the VRRP (Virtual Router Redundancy Protocol) and GLBP (Gateway Load Balancing Protocol) protocols, which ensure continuous network operation in the event of a primary gateway failure. The purpose of the study is to compare these protocols using the virtual environments EVE-NG and Containerlab, as well as to test them on physical and virtual devices.