PSYCHOLOGICAL PREDICTORS COMPLEX CHARACTERIZING HUMAN BEHAVIOR ONLINE

Current political situation in the world needs elaboration of approaches to ensuring a psychologically safe behavior of users in the information space. That is why significant problem is to analyze the complex of socio-psychological predictors characterizing user's behavior on the Internet space, as well as multivariate analysis of external and internal environment with the aim of providing opportunities of positive influence on the network users in case of negative personal tendencies. Planned: identify a set of psychological predictors; system-integrated, multi-factor analysis of the external and internal environment of the user; study of the dynamics of user behavior changes in order to identify periods characteristic of negative personal tendencies, and to determine their connection with the influence of meteorological conditions, seasonality and identified cases of a destructive impact on the user; determination of exposure to the influence of social network users, depending on the factors of their internal and external environment. Results of the study will provide the ability to provision point to a positive impact on the clusters of users corresponding to the types of temperament and periods, characterized or uncharacterized of their negative personal trends, including those identified in the cases of destructive impact on the user's of social network, and depending on the personal tolerance of different weather conditions and seasonality, which together contributes to a psychologically safe human behavior in the information space

Ultraviolet stimulated emission in AlGaN layers grown on sapphire substrates using ammonia and plasma-assisted molecular beam epitaxy

Ammonia and plasma‐assisted (PA) molecular beam epitaxy modes are used to grow AlN and AlGaN epitaxial layers on sapphire substrates. It is determined that the increase of thickness of AlN buffer layer grown by ammonia‐MBE from 0.32 μm to 1.25 μm results in the narrowing of 101 X‐Ray rocking curves whereas no clear effect on 002 X‐Ray rocking curve width is observed. It is shown that strong GaN decomposition during growth by ammonia‐MBE causes AlGaN surface roughening and compositional inhomogeneity, which leads to deterioration of its lasing properties. AlGaN layers grown by ammonia‐MBE at optimized temperature demonstrate stimulated emission (SE) peaked at λ = 330 nm, 323 nm, 303 nm and 297 nm with the SE threshold values of 0.7 MW cm−2, 1.1 MW cm−2, 1.4 MW cm−2 and 1.4 MW cm−2, respectively. In comparison to these, AlGaN layer grown using PA‐MBE pulsed modes (migration‐enhanced epitaxy, metal‐modulated epitaxy, and droplet elimination by thermal annealing) shows a SE with a relatively low threshold (0.8 MW cm−2) at the considerably shorter wavelength of λ = 267 nm

ADAPTATION OF SOFTWARE SYSTEMS TO USER TASKS BASED ON THE METHOD OF CONFIGURATION MODELING

In this paper, we discuss task of adaptation of software systems (PCs) and complexes (PCs) on the basis of the configuration modeling (MCM) method is considered. The article describes designated purpose of MCM in the field of SSs development, describes background and justification for the development of adap- tive SSs, and many of the advantages of creating configurable SSs. The main attention is paid to the analysis and research of the software engineering and implementation of adaptive SSs using the configuration mechanism as a mean of adapting SSs to the problem of interest. The potential for using configuration modeling in this area is determined. The meaning of the concepts «configurator», «configuration» and «reconfiguration» in the context of the description of MCM implementation of adaptive SSs creation is considered. The article gives a real example of an adaptive SS describing MCMs application in the process of software engineering. A conceptual model of such a SS is described, and its interpretation is implement- ed in the form of a modular complex data processing system (CDPS). The example of the CDPS shows the structural scheme of the conceptual model of the data handling process, decomposes the CDPS into the basic modules, including the built-in configuration module. Special attention to a detailed description of the problem of interest and the functionality of each module is paid, as well as to the description of the relationships between them. On the basis of the CDPS, the solution of the problem of adapting PSs with the elements of dynamic configuration based on the input data is realized. The example of the CDPS describes user-accessible operating modes of the SS corresponding to various system configurations determined according to the tasks to be solved. The article makes it possible to obtain an abstract presentation on the methods and principles for the creation of adaptive SS. Moreover, a concrete understanding of the imple- mentation of adaptation by using the configuration management mechanism is covered. Additionally, the article highlights direct benefits and potential profit from using of configurator in software engineering