Arctic territory as the national patrimony of Russia in the modern world

Objective: to present the development features of the most important geostrategic territory of Russia on the basis of historical understanding, taking into account the ongoing climatic changes and analyzing the initial stage of active entry into the Arctic. Methods: the cognitive and partly debatable nature of the research determined the use of such methods of cognition as historical, which allows us to consider various types of activities over a certain period and draw conclusions about the beginning of the active phase of research and development of the Arctic over the last century; empirical, and logical methods, including analysis, comparison, and data summarization.Results: the tasks of improving the territorial structure of the economy, as well as the ongoing transformation of the national space of the country in order to develop remote regions require practical and scientific understanding in order to maximize their effectiveness. The article analyzes the key regulations in the field of Arctic development, as well as scientific research on this issue. On their basis, the genesis of the most important stages of the modern development of the Arctic is presented, which contributes to strengthening the priority status of this geostrategic macro-region of Russia. It is determined that the economic development of the Arctic should be combined with a strong protection of national interests, as well as with a state support system.Scientific novelty: consists in the formation of a chronology of the main directions of the state’s practical activities over the past decade, which contributed to implementing the main goal of modern transformations in the Arctic, which is to protect national interests, national priorities and involve the remote, hard-to-reach and sparsely populated territories into economic turnover.Practical significance: the study results can be used to develop a strategy for the development of the Arctic regions, and can serve as the basis for further scientific research

Controlled Synchronization of One Class of Nonlinear Systems under Information Constraints

Output feedback controlled synchronization problems for a class of nonlinear unstable systems under information constraints imposed by limited capacity of the communication channel are analyzed. A binary time-varying coder-decoder scheme is described and a theoretical analysis for multi-dimensional master-slave systems represented in Lurie form (linear part plus nonlinearity depending only on measurable outputs) is provided. An output feedback control law is proposed based on the Passification Theorem. It is shown that the synchronization error exponentially tends to zero for sufficiantly high transmission rate (channel capacity). The results obtained for synchronization problem can be extended to tracking problems in a straightforward manner, if the reference signal is described by an {external} ({exogenious}) state space model. The results are applied to controlled synchronization of two chaotic Chua systems via a communication channel with limited capacity.Comment: 8 pages, 2 figure

Calibration of RADMON radiation monitor onboard Aalto-1 CubeSat

RADMON is a small radiation monitor designed and assembled by students of University of Turku and University of Helsinki. It is flown on-board Aalto-1, a 3-unit CubeSat in low Earth orbit at about 500 km altitude. The detector unit of the instrument consists of two detectors, a Si solid-state detector and a CsI(Tl) scintillator, and utilizes the ΔE-E technique to determine the total energy and species of each particle hitting the detector. We present the results of the on-ground and in-flight calibration campaigns of the instrument, as well as the characterization of its response through extensive simulations within the Geant4 framework. The overall energy calibration margin achieved is about 5%. The full instrument response to protons and electrons is presented and the issue of proton contamination of the electron channels is quantified and discussed

Modern microwave methods in solid state inorganic materials chemistry: from fundamentals to manufacturing

No abstract available

ПЕДІАТРИЧНА ОСВІТА УКРАЇНИ У ХХІ СТОРІЧЧІ: СУЧАСНІ ВИКЛИКИ ТА ПРОБЛЕМИ МАЙБУТНЬОГО

The aim of the work – to evaluate the state of development of pediatric education in Ukraine in the beginning of the 21st century, staffing of the branch in the field of pediatrics and to develop a plan of measures to overcome the crisis phenomena in pediatric health care. The main body. The article presents data on the development of pediatric education in the early 21st century after the restoration of the educational-scientific specialty “Pediatrics” in 2017. The development of up-to-date standards for the training of pediatric doctors, based on the acquisition of future master’s degrees in pediatrics, general and professional competencies and necessary practical skills is highlighted. The current problems in the provision of pediatric health care facilities are emphasized. Conclusion. A list of measures at the sectoral and national level has been developed to restore the necessary training рediatricians for childrenʼs health care of the country and to ensure the proper methodological provision of the educational process, which may cause difficulties in providing children with quality medical care in the future.Мета роботи – оцінити стан розвитку педіатричної освіти в Україні на початку ХХІ сторіччя, кадрове забезпечення галузі за спеціальністю «Педіатрія» та розробити план заходів щодо подолання кризових явищ у педіатричній охороні здоровʼя. Основна частина. У статті наведено дані щодо розвитку педіатричної освіти на початку ХХІ сторіччя після відновлення освітньо-наукової спеціальності «Педіатрія» у 2017 р. Висвітлено розробку сучасних стандартів підготовки дитячих лікарів, що базуються на набутті майбутніми магістрами педіатрії загальних та фахових компетенцій і необхідних практичних навичок. Наголошено на теперішніх проблемах у кадровому забезпеченні педіатричних закладів охорони здоровʼя, що може викликати складнощі у забезпеченні дітей якісною медичною допомогою у майбутньому. Висновок. Розроблений перелік заходів на галузевому та загальнодержавному рівні щодо відновлення необхідних для країни обсягів підготовки дитячих лікарів та забезпечення належного методичного забезпечення навчального процесу

The COVID-19 pandemic and its global effects on dental practice. An international survey

Objectives A multicentre survey was designed to evaluate the impact of COVID-19 outbreak on dental practice worldwide, estimate the COVID-19 related symptoms/signs, work attitudes and behaviour and the routine use of protective measures and personal protective equipment (PPE). Methods A global survey using a standardized questionnaire with research groups from 36 countries was designed. The questionnaire was developed and pretested during April 2020 and contained three domains: 1) personal data; 2) COVID-19 positive rate and symptoms/signs presumably related to the coronavirus; 3) working conditions and PPE adopted after the outbreak. Countries’ data were grouped by the country positive rate (CPR) during the survey period and by Gross-National-Income per capita. An ordinal multinomial logistic regression model was carried out with COVID-19 self-reported rate referred by dental professionals as dependent variable to assess the association with questionnaire items. Results A total of 52,491 questionnaires were returned with a male/female ratio of 0.63. Out of the total respondents, 7,859 dental professionals (15%) reported symptoms/signs compatible with COVID-19. More than half of the sample (n=27,818; 53%) stated to use FFP2/N95 masks, while 21,558 (41.07%) used eye protection. In the bivariate analysis, CPR and N95/FFP2 were significantly associated (OR=1.80 95%CI=1.60/2.82 and OR=5.20 95%CI=1.44/18.80, respectively), while Gross-National-Income was not statistically associated with CPR (OR=1.09 95%CI=0.97/1.60). The same significant associations were observed in the multivariate analysis. Conclusions Oral health service provision has not been significantly affected by COVID-19, although access to routine dental care was reduced due to country-specific temporary lockdown periods. While the dental profession has been identified at high-risk, the reported rates of COVID-19 for dental professionals were not significantly different to those reported for the general population in each country. These findings may help to better plan oral health care for future pandemic events