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РАЗРАБОТКА РЕФЕРЕНТНОЙ МОДЕЛИ АРХИТЕКТУРЫ ИНФОРМАЦИОННОЙ СИСТЕМЫ НАУКОЕМКИХ ПРЕДПРИЯТИЙOne of the main problems in high-tech enterprise management is the issue of integrated logistics support of production and service, which is not considered an independent methodological problem by manufacturers. The article describes the baseline architecture of the information system based on the CALS conceptual model (Continuous Acquisition and Lifecycle Support). Research into ILS tasks and reference architecture components made it possible to propose a reference architecture model of the unified ERP II system for integrated logistic support. Two main approaches to developing integrated systems were considered while constructing the information system architecture: mono platform and poly platform. Poly platform systems integration is used as a method of constructing the target architecture of a unified information system for information support life cycle product (with all the necessary improvements). A gap-analysis of the transition from the baseline to the target architecture, reflecting the main stages, is provided. The proposed reference architecture model of an information system represents a possible solution that provides support for solving not only the integrated logistics support problems but also the core tasks of the enterprise: supply chain management, resource planning, customer and supplier relationship management. A reference model of the system architecture was built with due regard to integration tools for information exchange in a single information space between all the subsystems. The proposed model is based on a single service-oriented platform and the Integration Bus which allows connecting systems of different manufacturers. Each system is discussed in detail. The key functions and tasks of each system (general and service ones) are described. INTEGRATED LОGISTIC SUPPОRT; CОNTINUОUS ACQUISITIОN AND LIFE CYCLE SUPPОRT; REFERENCE MODEL; INFORMATION SYSTEM; TARGET ARCHITECTURE. ИНТЕГРИРОВАННАЯ ЛОГИСТИЧЕСКАЯ ПОДДЕРЖКА; ИНФОРМАЦИОННАЯ ПОДДЕРЖКА ЖИЗНЕННОГО ЦИКЛА ИЗДЕЛИЯ; РЕФЕРЕНТНАЯ МОДЕЛЬ; ИНФОРМАЦИОННАЯ СИСТЕМА; ЦЕЛЕВАЯ АРХИТЕКТУРА.

Today, health care as one of the priority areas for the state of development requires special attention in the transition to innovative models based on the use of advanced medical concepts and digital technologies. In this regard, for medical organizations, a strategic decision, the formation of disparate architectural solutions becomes topical. Before you begin to develop models of architectural solutions, apply digital transformations to them, it is advisable to use some reference model in the digital transformation of a medical organization, which will allow you to take into account the organization’s main business and IT requirements, restrictions and technologies used. For the formation of the reference architectural solution, a preparatory stage is needed, which allows identifying the requirements for the architecture and the corresponding restrictions. The article proposes a motivational expansion, on the basis of which the requirements and limitations for the reference model of an architectural solution in the digital transformation of a medical organization are formulated.

The subject of this research is the Solow Growth Model. The relevance is substantiated by the fact that the Solow Growth Model is conceptually simple, and simultaneously it can be complicated with clarifications and additions. The authors believe that one of such clarification is consideration of the demand as a stochastic variable. The goal of this research is to propose a model that takes into account the random nature of consumer demand based on the Solow Growth Model. The article aims to examine the Solow Growth model; conduct a literature overview of the most common modifications of the model; analyze the well-known modifications and complications of the model; outline the methods of such modifications and complications; offer Solow Growth Model supplemented with microeconomic substantiation with consideration of the stochastic demand. The article employs the methods of analysis, synthesis, comparison, and differential calculus. The novelty lies in the statement  that consumption depends on demand; it is intuitively obvious that demand can be considered as stochastic variable. This is explained by the individual traits of the consumers. Therefore, the demand can be described via stochastic differential equation based on the standard Wiener process (analogy with Brownian motion). The article offers a stochastic differential equation of demand. The Solow Growth Model is supplemented with the stochastic differential equation of demand. In conclusion, the authors determine the key modification and complication trends of the Solow Growth Model; developed the model based on the Solow Growth Model with the stochastic differential equation of demand as its addition. Further research should be aimed at solution of the obtained mathematical model supplemented with the stochastic differential equation of demand.

In modern conditions of high uncertainty of the external environment, companies face the task of having to develop different behavioral strategies for different market segments. The efficiency of the company's performance in these conditions is largely determined by its effective interaction with stakeholders. In this connection, the tools for identifying the stakeholders play a major role in implementing projects. The organization of the company must be taken into account while developing a strategy and selecting ways of interacting with the stakeholders. Modern companies are becoming more project-oriented, so the problem of managing a project portfolio gains importance; a portfolio should ensure that the goals of the company are achieved throughout the implementation of the strategy in the selected strategic business areas. This paper proposes an approach to coordinating stakeholder interests while managing the company's portfolio. It is demonstrated that in the modern conditions, the successful implementation of projects is largely determined by the effective interaction with the stakeholders of the company. Using strategic business areas is offered as an economic tool for identifying and classifying stakeholders. The concept of strategic business areas (SBAs) has been clarified in the paper. The projects adopted by the companies while implemented the selected strategies can serve as a tool for coordinating the interests of stakeholders in each of the SBAs. Including social investment projects into the portfolio as substantiated by the authors as one of the tools for coordinating stakeholders' interests within the SBA.