Наукова спадщина О.О. Русова в контексті актуальних проблем української етнології

У лютому виповнилося 160 років з дня народження відомого вченого, етнографа, статистика та громадського діяча Олександра Русова.This article is devoted to the famous scholar, ethnographer, civil activist Oleksandr Rusov. All his work was concentrated on the study of Ukrainian folk, their history, life style and language. Among his most prominent works was the foundation of the statistics as the scholarly discipline and its use for the ethnographical studies. Special attention deserves his work “The Statistics of the Ukrainian Population of the European Russia”. His data on Ukrainian and Russian population in various regions at different historical times are very valuable for the contemporary scholars. He actively participated in Ukrainian cultural life: he was the organizer of the first Ukrainian plays on Kyiv stages, the editor of Prague edition of “Kobzar”, and participated in different social and cultural organizations

Нелинейная нетерова краевая задача в критическом случае

Знайдено необхiднi та достатнi умови iснування розв’язкiв слабко нелiнiйної нетерової крайової задачi для системи звичайних диференцiальних рiвнянь у критичному випадку.We construct necessary and sufficient conditions for the existence of the solution of a Noether weakly nonlinear boundary-value problem for a system of ordinary differential equations in the critical case

Optical response of silver nanoneedles on a mirror

Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction

Задачи глобальной экологии

Changes in the size distribution and composition of bimetallic Pd-Au nanoclusters have been observed after hydrogen exposure. This effect is caused by hydrogen-induced Ostwald ripening whereby the hydrogen reduces the binding energy of the cluster atoms leading to their detachment from the cluster. The composition changes due to a difference in mobility of the detached palladium and gold atoms on the surface. Fast palladium atoms contribute to the formation of larger nanoclusters, while the slower gold atoms are confined to the smaller nanoclusters. These transformations in the Pd-Au nanocluster size and composition set a limit for chemical reactions in which such nanoclusters are involved together with hydrogen

Драматичні елементи у фольклорі – традиція та актуальність

The researches of the folklore and ethnographic sources underscore, that the dramatic elements exist in the folk art (songs, fairy tales, small folklore genres, children folklore etc.), in customs and in the other forms of the life of the folk. But it's importaint what I mean by the notion "dramatic elements in the folklore". Namely, existence of the action, plot, culmination and denouement, then the place and time of the development of the action, monologue, dialogue in the action, characters, masks, dresses, text, scenography, scenario, director, audience, puppet-show, i. e. the presence of the performance. In this paper special attention is given to some dramatic acting with multitude of the dramatic elements, which are connected with large quantity of the Cristmas holidays. We also drew parallels between traditional forms and new elements of celebration and results of the actualization of some innovations in society. It is worth to refer the carnivals in Vechani and Strumitsa and also celebrations of the Eve in Skopje

Проблемы медицинского обслуживания моряков в Украине

Стаття присвячена деяким проблемам медичного обслуговування моряків в Україні, в тому числі питанням професійних оглядів, які визначають придатність моряка по стану здоров‘я до роботи на суднах. Розглядаються проекти пропозицій до наказу, який готується і який буде регламентувати медичні огляди моряків.The article is devoted some problems of medical service of seafarers in Ukraine, in particular to the questions of professional examinations, determining the fitness of seafarer to be fit for work on ships. The projects of appendixes are examined to the preparing order, to regulating physical examinations of seafarers

Triadic Pattern Detection on Inter‐Industry Production Networks: A Multi‐Commodity Analysis

Triadic motifs are the smallest interconnected building blocks of complex networks, such as production networks. They can be detected as over occurrences with respect to null models that only consider pairwise interactions. Recently, there has been growing interest in the role of triadic motifs in the propagation of economic shocks. However, their characterization at the level of individual commodities is still poorly understood. To address this gap, we analyze both binary and weighted triadic motifs in the Dutch inter‐industry production network disaggregated at the level of 187 commodity groups. We introduce appropriate null models that filter out node heterogeneity and the strong effects of link reciprocity. We find that, while the aggregate network that overlays all products is characterized by a multitude of triadic motifs, most single‐product layers feature no significant motif, and roughly 85% of the layers feature only two motifs or less.This result has several important policy implications. First, it suggests that the propagation of economic shocks through production networks is likely to be complex and heterogeneous, as it will depend on the specific triadic motifs that are present in each commodity layer. Second, it implies that statistical bureaus can identify fine‐grained information about the structural relationships between different commodities by analyzing triadic motifs at the disaggregated level. This information can be used to develop more targeted and effective policy interventions.Overall, the analysis of triadic motifs in production networks has the potential to provide policymakers with valuable insights into the structure and dynamics of these networks. This information can be used to develop more targeted and effective policies to support economic growth and resilience

Triadic Pattern Detection on Inter‐Industry Production Networks: A Multi‐Commodity Analysis

Triadic motifs are the smallest interconnected building blocks of complex networks, such as production networks. They can be detected as over occurrences with respect to null models that only consider pairwise interactions. Recently, there has been growing interest in the role of triadic motifs in the propagation of economic shocks. However, their characterization at the level of individual commodities is still poorly understood. To address this gap, we analyze both binary and weighted triadic motifs in the Dutch inter‐industry production network disaggregated at the level of 187 commodity groups. We introduce appropriate null models that filter out node heterogeneity and the strong effects of link reciprocity. We find that, while the aggregate network that overlays all products is characterized by a multitude of triadic motifs, most single‐product layers feature no significant motif, and roughly 85% of the layers feature only two motifs or less.This result has several important policy implications. First, it suggests that the propagation of economic shocks through production networks is likely to be complex and heterogeneous, as it will depend on the specific triadic motifs that are present in each commodity layer. Second, it implies that statistical bureaus can identify fine‐grained information about the structural relationships between different commodities by analyzing triadic motifs at the disaggregated level. This information can be used to develop more targeted and effective policy interventions.Overall, the analysis of triadic motifs in production networks has the potential to provide policymakers with valuable insights into the structure and dynamics of these networks. This information can be used to develop more targeted and effective policies to support economic growth and resilience

Using a Neural Network to Improve the Optical Absorption in Halide Perovskite Layers Containing Core-Shells Silver Nanoparticles

Core-shells metallic nanoparticles have the advantage of possessing two plasmon resonances, one in the visible and one in the infrared part of the spectrum. This special property is used in this work to enhance the efficiency of thin film solar cells by improving the optical absorption at both wavelength ranges simultaneously by using a neural network. Although many thin-film solar cell compositions can benefit from such a design, in this work, different silver core-shell configurations were explored inside a Halide Perovskite (CH\u2083NH\u2083PbI\u2083) thin film. Because the number of potential configurations is infinite, only a limited number of finite difference time domain (FDTD) simulations were performed. A neural network was then trained with the simulation results to find the core-shells configurations with optimal optical absorption across different wavelength ranges. This demonstrates that core-shells nanoparticles can make an important contribution to improving solar cell performance and that neural networks can be used to find optimal results in such nanophotonic systems

Optical properties of MgH2 measured in situ in a novel gas cell for ellipsometry/spectrophotometry

The dielectric properties of alpha-MgH2 are investigated in the photon energy range between 1 and 6.5 eV. For this purpose, a novel sample configuration and experimental setup are developed that allow both optical transmission and ellipsometric measurements of a transparent thin film in equilibrium with hydrogen. We show that alpha-MgH2 is a transparent, colour neutral insulator with a band gap of 5.6 +/- 0.1 eV. It has an intrinsic transparency of about 80% over the whole visible spectrum. The dielectric function found in this work confirms very recent band structure calculations using the GW approximation by Alford and Chou [J.A. Alford and M.Y. Chou (unpublished)]. As Pd is used as a cap layer we report also the optical properties of PdHx thin films.Comment: REVTeX4, 15 pages, 12 figures, 5 table