RESEARCH AND DEVELOPMENT OF THIN GARNET FILM BASED MAGNETO-OPTICAL IMAGERS.

This dissertation deals with the use of magnetic single-crystal bismuth-substituted iron garnet thin films for magneto-optical imaging (MOI) of stray magnetic fields. The main advantages of such garnet-based imagers are their high sensitivity, high contrast and possibility to design films for imaging of magnetic fields in a wide range of magnitudes. The garnet films have been grown by the liquid phase epitaxy method from a flux melt on (210)- and (100)-oriented substrates and extensively characterized using various magnetic and optical methods. Specific melt compositions are identified that allow the growth of high sensitivity and high contrast indicator films on (210)-oriented substrates. Very low saturation field and high sensitivity of such garnet films are attributed to the existence of the so-called "easy plane of magnetization", a plane for which the magnetic free energy density is at a minimum for any orientation of the magnetization vector within this plane. Etching has been extensively used to investigate the effect of intrinsic film domain structures on the quality of MO imagers. It has been determined that the size of the domains reduces as the thickness of the film gets smaller. Below 1μm film thickness, the domains start evolving towards the "single domain" state which is beneficial for imaging purposes. The comparison of the imaging capabilities of the etched films grown on (210)- and (100)-oriented substrates has been performed and the resolution of the (100)-oriented imagers has been found to be inferior to the imagers based on the (210)-oriented samples with an easy plane of magnetization. The possibilities to enhance magneto-optic effects by strong local electric fields from optically induced plasmon resonances in gold nanoparticles embedded in garnet media are analyzed. The experimental investigation of the plasmon resonance enhancement of the Faraday effect has been performed and about 50% increase in Faraday rotation angle at a wavelength of 633 nm has been measured for the samples of interest. It is expected that under ideal conditions of the plasmon resonance excitation as well as proper garnet film parameters, an increase in Faraday rotation up to 400% could be achieved

Model Construction and Research using System Compositional Approach on Natural Hierarchical Neural Networks. Development of Computer Toolbox

System compositional approach to model construction and research of informational processes, which take place in biological hierarchical neural networks, is being discussed. A computer toolbox has been successfully developed for solution of tasks from this scientific sphere. A series of computational experiments investigating the work of this toolbox on olfactory bulb model has been carried out. The well-known psychophysical phenomena have been reproduced in experiments

Multilingual Transformers for Product Matching -- Experiments and a New Benchmark in Polish

Product matching corresponds to the task of matching identical products across different data sources. It typically employs available product features which, apart from being multimodal, i.e., comprised of various data types, might be non-homogeneous and incomplete. The paper shows that pre-trained, multilingual Transformer models, after fine-tuning, are suitable for solving the product matching problem using textual features both in English and Polish languages. We tested multilingual mBERT and XLM-RoBERTa models in English on Web Data Commons - training dataset and gold standard for large-scale product matching. The obtained results show that these models perform similarly to the latest solutions tested on this set, and in some cases, the results were even better. Additionally, we prepared a new dataset entirely in Polish and based on offers in selected categories obtained from several online stores for the research purpose. It is the first open dataset for product matching tasks in Polish, which allows comparing the effectiveness of the pre-trained models. Thus, we also showed the baseline results obtained by the fine-tuned mBERT and XLM-RoBERTa models on the Polish datasets.Comment: 11 pages, 5 figure

OKREŚLENIE POSTACI STRUKTURALNEJ ORAZ STABILNOŚCI POWIERZCHNI KRYSZTAŁU Cd1-xМnxTe KRYSTALIZOWANEJ LASEREM

The modified surface layers of the Cd1-xMnxTe crystals were obtained by the laser recrystallization of the crystal surface with the use of millisecond and nanosecond ruby ​​lasers. The determination and diagnostics of the layer structural state were performed by the study the electron channeling patterns in the SEM. The AFM studies showed that mechanically stable contact regions in the CdTe crystal – Cu film system can be formed, depending on the laser energy density and beam defocusing. On the base of the ellipsometric studies, it was found that while irradiating the Cd1-xMnxTe crystal surface, the refractive index of the oxide film on the modified surface changes depending on the laser beam energy density, which can be interpreted as the formation of the oxides of the different chemical composition

Business Risk in Changing Dynamics of Global Village 2

The monograph is prepared based on the presentations and discussions made at the II International Conference “BUSINESS RISK IN CHANGING DYNAMICS OF GLOBAL VILLAGE (BRCDGV 2019)”, November, 7th-08th, 2019, in Ternopil, Ukraine. The aim of this scientific international conference is to provide a platform for professional debate with the participation of experts from around the globe in order to identify & analyze risks and opportunities in today’s global business, and specifically in Ukraine. The conference will provide a framework for researchers, business elites and decision makers to uplift the business ties and minimise the risk for creating a better world and better Ukraine.The Conference is designed to call experts around the globe from different sectors of practices which are effected by globalization and watching changes in Europe as well as in Ukraine. It is an excellent platform for interactions and communication between academicians, corporate representatives, policy makers, representatives of organizations and community, as well as individuals being the part of this globalized world. The 1st edition of this conference was held at the University of Applied Sciences in Nysa, Poland (2017); the 2nd edition took place at Ternopil Ivan Puluj National Technical University, Ukraine (2019); the 3rd edition will be organized at Patna University, India (2020) in cooperation with Indo-European Education Foundation (IEEF, Poland) and its partner universities from Poland, India, Europe and other part of the world.Under modern conditions of globalization nowadays, economic activity is undergoing changes. Innovative technologies, new forms of business, dynamic changes taking place in the world today result in the emergence of the necessity to minimize risks in order to maximize benefits. The cooperation between experts from different fields with the aim to ensure sustainable growth – policymakers, scientists, universities representatives and business elites is essential nowadays. With the purpose to bring them together and discuss the main issues of todays’ global world this conference took place in Ternopil, Ukraine. As Ukraine is now passing through a dynamic period of changes, recommendations coming up from such discussions can be very beneficial for building stronger society and meet the risks globalization brings up. This monograph provides a useful review of economic, financial and policy issues in the context of globalization processes and has proven extremely popular with practitioners and industry advisors. This edition is given the continued high demand and interest for experts form different areas working on diminishing of business risks wishing to keep abreast of current thinking on this subject. According to many experts process of managing risks is currently one of the most relevant business technologies and at the same time it is a complex process which requires ground knowledge in the research field and practical experience. The popularity of business risks management is due to objective reasons such as dynamics of society, interconnections and interdependence between different players in the society, increasing role of human capital in the country’s sustainable developmen

ЕНЕРГОЕФЕКТИВНІ ТЕХНОЛОГІЇ ДИСКРЕТНОГО ЗМІЦНЕННЯ ДЛЯ ПІДВИЩЕННЯ РЕСУРСУ ЕЛЕ-МЕНТІВ КОНСТРУКЦІЙ ВІЙСЬКОВОЇ ТА ЦИВІЛЬНОЇ МОБІЛЬНОЇ ТЕХНІКИ

The objective is to develop of scientific and technological bases for increasing of resource and ensuring of strength, durability, high technical and performance characteristics of series engines and aggregates for special equipment by creating and implementing of range of technologies for strengthening of working surfaces in contacting details. Scientific novelty of presented work is that based on set-theoretic approach new concept and methods are proposed for resource increasing for series of engines and special equipment by creating new technologies for strengthening their detail's surface, as well as in solving of fundamental and applied problems: Scientific and practical importance of the work is to develop fundamentally new technical solutions to ensure high strength and resource for details of heavy-loaded couples of engines and aggregates of special equipment. A range of methods of strengthening is developed and put into manufacturing (production and maintenance) of special equipment that, compared with traditional considerably (2-4 times) increase resource, strength and stability. A method for amplification of each of these methods, which are combinations of a much greater effect than from everyone. This has the effect of simultaneously improving all tribomechanical characteristics of friction pairs.В работе разработаны научно-технические основы повышения ресурса и обеспечения прочности, долговечности, высоких технических и тактико-технических характеристик серии двигателей и агрегатов для специальной техники за счет создания и внедрения гаммы технологий упрочнения рабочих поверхностей контактирующих деталей. на основе теоретико-множественного подхода предложены новые концепция и методы повышения ресурса серии двигателей и специальной техники путем создания новых технологий упрочнения поверхностей их деталей, а также в решении серии фундаментальных и прикладных задач. Научно-практическая значимость работы заключается в разработке принципиально новых технических решений по обеспечению высокой прочности и ресурса деталей тяжелонагруженных пар двигателей и агрегатов специальной техники. Разработана и внедрена в производство (изготовление и ремонт) специальной техники гамма методов упрочнения, которые, по сравнению с традиционными, существенно (в 2–4 раза) повышают ресурс, прочность и устойчивость. Предложен способ усиления действия каждого из названных методов путем их комбинации с гораздо большим эффектом, чем от каждого в отдельности. Это дает эффект одновременного улучшения всех трибомеханических характеристик пар тренияУ роботі розроблені науково-технічні основи підвищення ресурсу та забезпечення міцності, довговічності, високих технічних і тактико-технічних характеристик серії двигунів і агрегатів для спеціальної техніки за рахунок створення і впровадження гами технологій зміцнення робочих поверхонь контактуючих деталей. Наукова новизна представленої роботи полягає в тому, що в ній на основі теоретико-множинного підходу запропоновані нові концепція і методи підвищення ресурсу серії двигунів і спеціальної техніки шляхом створення нових технологій зміцнення поверхонь їхніх деталей, а також у вирішенні серії фундаментальних і прикладних завдань. Науково-практична значимість роботи полягає в розробці принципово нових технічних рішень щодо забезпечення високої міцності та ресурсу деталей високонавантажених пар двигунів і агрегатів спеціальної техніки. Розроблена та впроваджена у виробництво (виготовлення й ремонт) спеціальної техніки гама методів зміцнення, які, порівняно із традиційними, суттєво (у 2-4 рази) підвищують ресурс, міцність та стійкість. Запропоновано спосіб посилення дії кожного з названих методів шляхом їх комбінації із набагато більшим ефектом, ніж від кожного зокрема. Це дає ефект одночасного поліпшення усіх трибомеханічних характеристик пар терт

МАТЕМАТИЧНЕ МОДЕЛЮВАННЯ ДИНАМІЧНИХ ПРОЦЕСІВ В КОРПУСІ ЛЕГКОБРОНЬОВАНОЇ МАШИНИ ПРИ ІМПУЛЬСНІЙ ДІЇ

The paper describes the questions of modeling of dynamic processes in lightly armored vehicles. The studied object is associated with a parameter set that adequately describes battle module, armored hull and suspension as a dynamic system. The obtained set of variables completely identifies this dynamic system. It is proposed to carry out numerical modeling based on the integration of motion equations by the finite element method in order to determine the rational parameters. On the basis of analysis of researches results, parameters are determined that satisfy the relevant criteria and constraints. In particular, dangerous resonance modes are detected and the criteria for disabling from these regimes are formulated.В работе описаны вопросы моделирования динамических процессов в легкобронированных машинах. С помощью метода параметрического моделирования исследуемый объект описан множеством варьируемых параметров, которые полностью идентифицируют динамическую систему "боевой модуль–бронекорпус–подвеска". Для определения рациональных параметров предложено проводить численное моделирование на основе интегрирования уравнений движения с помощью метода конечных элементов. На основе анализа результатов исследований определяются параметры, которые удовлетворяют соответствующим критериям и ограничениям. В частности, выявляются опасные резонансные режимы и формулируются критерии отстройки от этих режимов.У роботі описані питання моделювання динамічних процесів у легкоброньованих машинах. За допомогою методу параметричного моделювання досліджуваний об’єкт  описаний множиною варійованих параметрів, які повністю ідентифікують досліджувану динамічну систему "бойовий модуль – бронекорпус – підвіска". Для визначення раціональних параметрів запропоновано проводити чисельне моделювання на основі інтегрування рівнянь руху за допомогою методу скінченних елементів. На основі аналізу результатів досліджень визначаються параметри, які задовольняють відповідним критеріям та обмеженням. Зокрема, виявляються небезпечні резонансні режими та формулюються критерії відлаштування від цих режимів