Analysis of specific radionuclides activity variations in soil within geotectonic units of Republic of North Macedonia

To establish baseline values for concentrations of terrestrial radionuclides for the Republic of North Macedonia, a survey covering the entire territory was performed. The 213 soil samples were collected from regions around the major settlements and cities, approximately evenly distributed over the geotectonic units which constitute the country's geological foundation. The specific activities of radionuclides were measured by gamma spectrometry. The following geometric mean values and geometric standard deviations were obtained: 550 Bqkg(-1) (1.47) for K-40, (37) Bqkg(-1) (1.33) for Ra-226, 38 Bqkg(-1) for U-238, and 38 Bqkg(-1) (1.53) for Th-232 in dry soil. The relation between specific activities of natural radionuclides and geology was investigated. Correlation between radionuclides, which may serve as additional geochemical indicators, and geology could not be found convincingly,. Mutual correlations between Ra-226, U-238, and Th-232 activities were found to be high (Spearman rho about 0.8), whereas the ones between these and K-40 are a bit lower, somewhat above rho = 0.6

Factors affecting indoor radon variations: A case study in schools of eastern macedonia

The subject of this study is the radon concentrations variations, measured with a nuclear track detectors in a total of 58 premises in all 29 primary schools of 4 municipalities in the Eastern part of the Republic of Macedonia. Despite a relatively small territory, the variability of radon concentrations proved to be significant. The geometric means (geometric standard deviations) of radon concentrations in the examined municipalities were in the range from GM = 71 Bq/m 3 (GSD = 2.08) to GM = 162 Bq/m 3 (GSD = 2.69), while for the entire region it was: GM = 96 Bq/m 3 (GSD = 2.47). The influence of the geographical and geological features of the school site as well as the building characteristics on the radon variations were investigated. The analysis showed that type of municipality, building materials, basement and geology have significant effects and respectively describe 6%, 16%, 22%, 39% of the radon total variability

The process of budgeting the strategy of industrial complex transformation in the context of digitalisation

The article is devoted to topical issues of budget formation and optimization of industrial complexes transformation strategies in the digital economy. The study defines the content of the budgeting strategy of transformation as a system of financial, organizational and managerial procedures focused on the formation of a balanced multi-level budget strategy and the effective expenditure of its resources on measures to modernize the enterprise. The author proposes the process of budgeting the strategy for the transformation of the industrial complex, which is distinguished by the use of the program-target method and ensures the consistency of long-term goals and the financial policy of the enterprise. Further, the researcher substantiates the allocation of strategically significant expenses of production companies into a separate category of accounting and the formation of transformation strategy budgets based on them. The budget of the change strategy includes 6 types of costs: 1) reconstruction and modernization costs; 2) information and communication technology costs; 3) research and development costs; 4) technological innovation costs; 5) organizational innovation costs; 6) marketing innovation costs. The author determines the recommended amount and horizon of the strategy budget planning and also presents a 6-stage algorithm of methodical reception on the use of neural network modeling tools to optimize the budget of the strategy of changes in the industrial complex. It is possible to use the results of the study as a methodological basis for organizing the process of budgeting strategies of industrial complexes in the digital economy

METHODOLOGY FOR EVALUATING THE STRATEGY AND PROGRESS OF INSTITUTIONAL TRANSFORMATIONS OF INDUSTRIAL COMPLEXES IN THE DIGITAL ECONOMY

The article is devoted to topical issues of transformation and development of Russian industry. The purpose of the research is to develop and test a methodology for evaluating the strategy and progress of institutional transformations of industrial complexes in the digital economy. The article defines the content of the methodology as a sequence of analytical stages that allow us to give a multidimensional and integrated assessment of strategic, process, structural, functional, technological, innovative, digital, institutional and other key aspects of the transformation of industrial complexes. The novelty and distinctive feature of the method are the ability to analyze the efficiency, speed, scale and resource support of institutional transformations of various types of industrial complexes in comparison with the average values of indicators for the Russian industry. Testing of the method was carried out on the production complex of Russia as a whole, as well as four industry, five territorial and fifteen local complexes. It is determined that transformations in the domestic industry are local, reactive and low-dynamic. Reengineering of functions, business processes, organizational structures, institutions and management systems of enterprises is carried out at an insufficient pace. Most Russian companies have not changed their strategies in the context of the digital economy. A list of ways to improve the efficiency of transformation of domestic enterprises is proposed

Methodology for the development of key performance indicators and customer satisfaction for the transformation strategy of the industrial complex

The article is devoted to the formation of key performance indicators (KPI) and customer satisfaction (CPI) for evaluating the implementation of strategies for the transformation of industrial complexes in the digital economy. The content of the KPI and CPI of the strategy for the transformation of the industrial complex as an integrated system of organizational, economic and sociological indicators is determined, allowing you to establish target quantitative values for the transformation and development of the most important elements, structures, processes and spheres of the enterprise, as well as to assess the degree of their achievement in operational and longterm periods. A methodology for the formation of KPI and CPI is proposed, a system and a scheme of mutual influence of these indicators are developed. The calculation procedure, data sources, and responsible performers for KPI and CPI are defined. Target values of KPI and CPI for industrial complexes from various regions of Russia have been developed. A general description of the mechanism for implementing KPI and CPI at enterprises is presented

Three-dimensional media for mobile devices

Cataloged from PDF version of article.This paper aims at providing an overview of the core technologies enabling the delivery of 3-D Media to next-generation mobile devices. To succeed in the design of the corresponding system, a profound knowledge about the human visual system and the visual cues that form the perception of depth, combined with understanding of the user requirements for designing user experience for mobile 3-D media, are required. These aspects are addressed first and related with the critical parts of the generic system within a novel user-centered research framework. Next-generation mobile devices are characterized through their portable 3-D displays, as those are considered critical for enabling a genuine 3-D experience on mobiles. Quality of 3-D content is emphasized as the most important factor for the adoption of the new technology. Quality is characterized through the most typical, 3-D-specific visual artifacts on portable 3-D displays and through subjective tests addressing the acceptance and satisfaction of different 3-D video representation, coding, and transmission methods. An emphasis is put on 3-D video broadcast over digital video broadcasting-handheld (DVB-H) in order to illustrate the importance of the joint source-channel optimization of 3-D video for its efficient compression and robust transmission over error-prone channels. The comparative results obtained identify the best coding and transmission approaches and enlighten the interaction between video quality and depth perception along with the influence of the context of media use. Finally, the paper speculates on the role and place of 3-D multimedia mobile devices in the future internet continuum involving the users in cocreation and refining of rich 3-D media content

Effect of titanium on the primary radiation damage and swelling of vanadium-titanium alloys

In this paper, a molecular dynamic study of the atomic displacement cascade development in pure vanadium and V-Ti alloys with titanium concentrations of 4, 8, and 16% is carried out for energies of a primary knocked-out atom of 5, 10, and 20 keV. The interactions between atoms in the V-Ti system are specified in the framework of a method developed earlier for modeling systems with metallic and covalent types of chemical bon

Molecular dynamics simulation of primary radiation damage in vanadium and alloy V-4Ti

The interatomic interaction in V and alloy V-4Ti was described on the base of modern potentials of interatomic interactions which took into account the interaction of screened ions at small interatomic distances and allowed to simulate correctly radiation damage. The main characteristics of atomic displacement cascades in simulated crystallites were calculated: the number of defects at different stages of cascade development, the size of the radiation-damaged regions, and an analysis of the estimation of the number, types and sizes of the surviving radiation defects in crystallites. The results obtained are compared for vanadium and alloy V-4T