The article is devoted to the problem of planning the gross volume produced by the participants of the innovation-industrial cluster (association of business entities in order to increase the efficiency of joint activities) based on the Leontiev balance model. The application of the model is considered on the example of a hypothetical innovation-industrial cluster, whose members produce products and carry out innovative activities. The result of solving the problem is a plan for the gross volume of final and intermediate products produced by cluster members. Examples of solving the planning problem are considered. The results of a computational experiment are presented, which make it possible to estimate the complexity of calculating the plan.

The article reveals the relevance of scientific research due to the need to develop a methodology for assessing the development of the global digital resources market in order to substantiate the digital development of the Republic of Belarus in modern conditions. Methodological foundations for the formation and development of the global digital resources market are proposed, a new economic concept “Global Aggregate Demand for Digital Resources” is introduced. Based on the intersectoral balance model, a methodology has been developed, indicators and formulas have been proposed for calculating the global aggregate demand for digital resources and its growth rate. The methodology was tested using the dynamic series of the proposed economic indicators based on empirical data from the intersectoral balances of the Organization for Economic Cooperation and Development countries and the Republic of Belarus.

As part of the study, a methodology was developed to assess the level of digitalization of the construction industry based on an analysis of the specifics of the functioning and process of introducing digital technologies into the work of construction organizations, as well as the existing methodological framework for assessing the level of use of digital technologies in various economic systems offered by international companies. The methodology is based on the current algorithm for introducing digital tools into the work of construction companies, which simultaneously reflects all stages of the life cycle of construction projects and the trend towards increasing the degree of digital interaction. The composition of the enlarged components of the digitalization level includes: the level of informatization of activities (the use of classical information systems and tools) of construction organizations, the level of digitalization of key management areas (design, construction of facilities, operation, control) of construction organizations and the level of digital interaction of construction organizations within the internal and external environment. The scientific novelty of the methodology lies in the adaptation of classical scientific approaches to the specifics of the construction complex with the simultaneous substantiation of the assessment system, which allows not only to establish the general level of digitalization, but also to identify the least digitalized areas, and also to determine at what stage of the transition to a digital model are individual construction organizations.

The article discusses the evolution of the currency in the context of digital transformation. The main forms of fiat money are presented, including their modern development through digital form, as well as distinctive features. Attention is paid to the essence and features of the use of electronic money, their main differences. The focus is on the digital currency of the central bank. Information on the introduction and use of digital currency of central banks has been accumulated and systematized. The relevance of the introduction of the digital currency of the central bank is determined, its differences from the cryptocurrency are listed. The essence of the blockchain is explained and the process of its functioning is considered. The main models for the functioning of the digital currency of central banks, as well as options for cross-border settlements through the use of the digital currency of central banks, are indicated. The prospects for the integration of digital currencies of central banks are touched upon, including their impact on cross-border settlements.

The article is devoted to the results of substantiation and creation of the algorithm for the development of a software tool for information transformation, which is advisable to be used in the process of digital transformation of education in higher educational institutions. In the course of substantiating this algorithm, the role of studying issues related to the information transformation in the formation of professional competencies of future specialists in the field of information technology is determined; the advantages of using the C language in comparison with other programming languages for software development are determined; the possibilities of working with memory using pointers in the C programming language are considered. The key code fragments of a software tool developed in accordance with the proposed algorithm related to the transformation of textual information into numeric data and numeric data into textual information are presented. Examples of the operation of this soft-ware tool are demonstrated and the ways for its use is presented when conducting laboratory or practical work in disciplines whose topics are related to information technology, with students of the 1st and 2nd years of study. The ways of improving the proposed algorithm aimed at increasing the number of academic disciplines, within which it is advisable to use the software developed in accordance with it, are determined.

The legislation of the Republic of Belarus currently establishes the same legal force for identical documents on paper and in electronic form, which have a mandatory requisite - an electronic digital signature. The article considers the system for managing public keys of electronic digital signature in the Republic of Belarus, as well as the concepts and definitions associated with this system. The technical normative legal acts in the field of cryptographic protection of electronic documents are analyzed. The necessity of verification of certificates of public keys of electronic digital signature is substantiated. Possible variants of the procedure for verifying public key certificates are described, their advantages and disadvantages are shown. An online service for checking public key certificates has been developed using open cryptographic libraries and public tools.

The article proposes a new method and an algorithm based on it for processing large-volume images. What is new in the implementation of image processing is the method of implementing program code using the App object. The novelty of the proposed method also lies in the algorithm for the specific implementation of filters for processing graphic elements. During development, various problematic situations were taken into account, such as using modern variable declaration syntax, using arrow functions, dividing code into smaller functions or class methods, adding comments to complex sections of code, checking for errors and exceptions, and following standards and guidelines by coding style. The implemented algorithm in the JavaScript programming language is an effective web application that uses the EaselJS library to work with graphics and has specific logic for working with graphic layers, drawing tools and user interaction, which ultimately made it possible to improve code performance compared to known solutions.

The questions of measuring heart rate in systems for monitoring the functional state of a person operating in real time are considered. Recorders of systems of this class are sensitive to interference and noise caused by motor artifacts, electromagnetic interference from external sources, temporary degradation of sensors, etc. The ratio for the calculation of the heart rate is given and the calculation algorithm is described, which consists in registering an electrocardiogram, calculating the electrocardiogram spectrogram and forming the first numerical array from it, calculating the second Fourier transform of the numerical values of the rows of the first array and peak analysis of the newly obtained amplitude spectra. The implementation of the algorithm makes it possible to obtain a more accurate quantitative assessment of the heart rate in real time in the presence of interference and noise.