Quasi-harmonic self-oscillations in discrete time: analysis and synthesis of dynamic systems

For sampling of time in a differential equation of movement of Thomson type oscillator (generator) it is offered to use a combination of the numerical method of finite differences and an asymptotic method of the slowl-changing amplitudes. The difference approximations of temporal derivatives are selected so that, first, to save conservatism and natural frequency of the linear circuit of self-oscillatory system in the discrete time. Secondly, coincidence of the difference shortened equation for the complex amplitude of self-oscillations in the discrete time with Eulers approximation of the shortened equation for amplitude of self-oscillations in analog system prototype is required. It is shown that realization of such approach allows to create discrete mapping of the van der Pol oscillator and a number of mappings of Thomson type oscillators. The adequacy of discrete models to analog prototypes is confirmed with also numerical experiment.

Full Validation of A New Formula Estimating The Smoking Economic Burden By Morbidity

Introduction: In the Health Economy research context usually researches are assuming that the probability of the morbidity attributable to smoking is equal to the probability of the health spend attributable to smoking. Also is attributed the whole health spend because of active smokers to smoking. To solve this limitation, the authors suggested a new rate to measure the smoking economic burden by morbidity. Objective: To evaluate the feasibility from a new rate to measure the smoking economic burden by morbidity. Methods: Was made a bibliographic research to describe the estimation process from the smoking economic burden by morbidity. Were utilized as theoretical method the analysis and synthesis, the comparative and the systematization. As empiric methods were used the Principle of Multiplication and the bibliographic research. Results: The rate designed solves the limitation identified during the research about the estimation of the smoking economic burden by morbidity. Conclusion: The new rate will provide a better estimation from the smoking economic burden by morbidity. It application will may identify the role of active smokers and passive smokers in the formation of the smoking economic burden. However, it application must be agree to the supposes identified.

People’s Experience of Shared Decision Making in Musculoskeletal Physiotherapy: A Systematic Review and Thematic Synthesis

(1) Shared decision making (SDM) has been advocated as a way of improving prudency in healthcare and has been linked to self-efficacy and empowerment of service users. The evaluation of its use in musculoskeletal (MSK) physiotherapy has been vague, but articles suggest that trust and communication are integral. (2) ENTREQ guidelines informed this systematic review and thematic synthesis. PRISMA recommendations steered a systematic literature search of AHMED, CINAHL, MEDLNE, EMBASE and Cochrane databases from inception to September 2021. COREQ was used for quality appraisal of articles alongside critical discussions. Analysis and synthesis included five stages: outlining study characteristics, coding of data, development of descriptive themes, development of analytical themes and integration and refinement. The review aim was to explore people’s experiences of SDM in MSK physiotherapy and to inform our understanding of the conditions needed for successful SDM. (3) Out of 1508 studies, 9 articles were included. Four main themes (trust, communication, decision preferences and decision ability) demonstrated that the majority of people want to participate in decision-making. As described in the capacity and capability model, three core conditions were needed to facilitate someone’s’ ability to participate. (4) People want to be involved in SDM in MSK physiotherapy. For successful SDM, physiotherapists should look to develop mutual trust, utilise two-way communication and share power.

The Insertion of Economic Cybernetics Students on the Romanian Labor Market in the Context of Digital Economy and COVID-19 Pandemic

The purpose of this paper is to provide evidence of the insertion of Romanian students of economic cybernetics on the labor market by connecting business environment expectations with the goals of a competitive digital economy. The research is organized around three hypotheses to address the issues of both non-employed and employed economic cybernetics students. A rank-ordered probit choice model was estimated to compute the probability that a certain skill requires improvement. The empirical results showed that the COVID-19 pandemic stimulated more cybernetics students to get a job in this period. Moreover, these students present the necessary level of digital skills to be employed, but other skills need improvement: skills of analysis and synthesis, adaptability in handling crisis situations and creativity. This research reveals the lack of working experience as the main cause for rejection after an interview and the students’ tendency to overestimate their salary. This study also identified barriers of the insertion on the labor market for these students with digital skills that were not the subject of previous studies. Moreover, the impact of the COVID-19 pandemic on their decision to get a job in this period is assessed and a few recommendations of skills improvements are provided. These results present practical implications for educational policies and the business environment in the context of achieving a competitive European digital economy. The limit of this research is given by the sample representativeness for cybernetics students only for Bucharest, but a future paper will ensure a representative sample at the national level.

ADVANTAGES AND PROSPECTS OF CO-BRANDING IN THE UKRAINIAN MARKET

BACKGROUND AND OBJECTIVES. The marketing practices of companies over the past two decades have increasingly been based on co-marketing, or inter-firm marketing alliances. The mutual recognition and understanding that each firm's success depends in part on the other firm forms the foundation underlying co-marketing activities. Firms move from trying to win alone to forming networks of partner firms. Corporations understand the need for alliances to acquire and maintain competitive advantage.METHODS. We used general scientific and special research methods: abstract-logical – to summarize theoretical and methodological foundations of co-branding as an integrative marketing tool for joint development of companies; economic-statistical – to analyze the level of development of poultry companies; monographic – to study the experience of individual companies with horizontal form of co-branding; analysis and synthesis – to study the components of co-branding companies; sociological research – to identify key success factors of co-branding.FINDINGS. The structural and logical model of co-branding alliances of poultry companies, the use of which is based on a co-branding strategy, creates the necessary basis for its further development within the framework of modern marketing theory, will increase the effectiveness of co-branding.CONCLUSION. Co-branding, which is a form of strategic collaboration between two brands that involves bringing them together to create a new product or service, makes the marketing alliances of companies visible to the consumer. In doing so, companies imply recognition of the fact that their prominence represents added value. Closer collaboration with retailers, more focused promotion, and co-branding are becoming ways for many consumer companies to control costs and keep prices down. An example of such cooperation is the use of a co-branding strategy for poultry companies.

Digital transformation of russian customs authorities’ activities on the example of automatic release technology

The article considers the main factors limiting the use of automatic release technology in electronic customs declarations. The directions of further development of the potential of the investigated technology in the conditions of digitalisation, automation and intellectualisation of customs administration in the Russian Federation have been proposed. In order to expand the coverage of the declaration array by automatic release technology, the main directions for improving the automation mechanism at the release of goods have been designated, trends of automation of customs operations and its influence on the development of foreign economic activity have been defined. The methodological basis of the study was fact-finding, analysis and synthesis, induction and deduction, system and process approaches, logical and statistical methods.

ГНОСЕОЛОГІЧНА СУТНІСТЬ СТАНОВЛЕННЯ ТА ФОРМУВАННЯ СОЦІАЛЬНОЇ ВІДПОВІДАЛЬНОСТІ ЗАКЛАДІВ ВИЩОЇ ОСВІТИ В УМОВАХ СТРУКТУРНО-ІННОВАЦІЙНИХ ПЕРЕТВОРЕНЬ

The article provides insights into the nature and specifics of social responsibility of higher education institutions in the context of transformational economy. In particular, it is argued that in the frameworks of structural and innovative transformations, technogenic safety as a readiness to be socially responsible, contributes to implementing the idea of integration of philosophical, legal, sociological and pedagogical approaches to enhance the performance of modern higher education institutions. The most critical factors in building social responsibility are the focus on professional responsibility, autonomy of higher education institutions, as well as the compliance with the principle of freedom of choice and responsibility in providing dual education services and applied research. The hypothesis of the study is the statement that in the context of structural and innovative transformations, the gnoseological nature of social responsibility of higher education institutions is embodied in gradual building of a technogenic safety paradigm. The research objective is to explore the specifics of social responsibility of higher education institutions from the perspectives of structural and innovative transformations. To attain the study agenda, the following research methods have been employed: historical analysis – to track successive changes in social responsibility concepts in the area of higher education subject to evolutionary development of society; analysis and synthesis techniques – to reveal the content and structure of a social responsibility framework. The findings demonstrate that a technological background to facilitate successive change in the structure of social responsibility elements is the following chain relationship: goals – knowledge – methods – activities. In this chain, goals are considered as expected professional performance outcomes; knowledge, methods and activities – as the capacity (readiness) of higher education institutions to implement effective professional technologies to attain the best results along with meeting all stakeholders’ demands. The summary concludes that the gnoseological implications in building social responsibility in higher education institutions affect the content of goals and the qualitative variety of tools which rely upon worldview and cultural societal values, as well as moral principles and ethical standards of educational activities.

РОЗРИВАЛЬНІ ХАРАКТЕРИСТИКИ КОМПЛЕКСНОЇ ПОЛІЕТИЛЕНОВОЇ НИТКИ

Purpose. To investigate the influence of the number of threads resisting to break, the griping length, and the change in the position of the interlacing point when threading with a loop the breaking characteristics of complex polyethylene threads in the form of a loop.Methodology. In the course of the research, experimental research methods were used to determine the breaking characteristics of high molecular weight polyethylene threads on a WDW-5ES tensile machine in accordance with DSTU ISO 2062: 2004, the main provisions of textile materials science and knitting theory, methods of analysis and synthesis of the results obtained. Results. Based on the results of the studies, the influence of different factors on the breaking characteristics of complex multifilament threads was determined, namely: the influence of the number of threads resting on the break, the griping length and the change in the position of the weave point when threading with a loop. In the course of research, the griping length was changed in the range from 25mm to 300mm, and with a stable griping length (100 mm), the location of the thread weave point relative to the lower grip (25mm, 50mm, 75mm) was changed. It has been found that the breaking characteristics of a complex polyethylene yarn are influenced by both the griping length and the location of the weave point in the case of a loop-shaped break. The magnitude of the specific breaking force in the study of loop-shaped rupture is greater than in the study of straight segments of the thread. This is due to parallelization and compaction of the filaments due to the presence of the weave point on the thread that resists tearing. Scientific novelty. Regularities of the effect of griping length, linear density, and location of the point of weave of the complex high molecular threads in relation to the downer and upper grip are established provided that the griping length (100 mm) remains unchanged on the value of breaking load and elongation.Practical significance. Determination of the factors affecting the breaking characteristics of a complex polyethylene yarn will allow in the future, at the stage of designing the structure of knitwear in computer 3D modeling systems, to provide for the magnitude of the breaking force.