bluuebunny/crossref_metadata_2025 huggingface dataset:
New Mobility Paradigm and Indigenous Construction of Places: Physical and Symbolic Mobility of Aymara Groups in the Urbanization Process, Chile
Authors: Salazar Gonzalo , González Paloma
Published: April 2021

In the current global scenario, in which mobility has been strongly impacted, it is relevant to highlight certain mobility experiences of Indigenous Latin American peoples, in which new cultural and geographical elements justify revisiting this phenomenon. In this context, the mobility of the Aymara ethnic group offers an opportunity for such a second look. Although the subject has been approached from the perspectives of internal migration processes and physical movement, as in other Latin American cases, studies have omitted some important aspects for its analysis, such as the practices, meanings, and political implications associated with mobility. Based on the new mobility paradigm, this article seeks to strengthen the perspective on mobility by researching rural-urban mobility practices and their meaning regarding the experiences of Aymara people who migrated from the rural municipality of Putre to settle in the city of Arica from the 1950s. At the same time, it is shown that these Aymara mobility practices imply spatiotemporal dynamics that are key for the construction of place, and allow for a widening of base elements that should be considered in the new mobility paradigm. This research is based on five years of ethnography, including mobile accompaniment and semi-structured interviews. This methodological approach has allowed researchers to explore how elements related to physical and symbolic mobility have constantly constructed relational spaces within the Arica and Parinacota region over time. This shows that mobility does not only refer to physical movement, but to politics, emotions, culture, and memory as well. From these results, the article examines and discusses key elements related to physical and symbolic mobility, and their implications in political and intercultural terms.
Small and Medium-Sized Ports in the TEN-T Network and Nexus of Europe’s Twin Transition: The Way towards Sustainable and Digital Port Service Ecosystems
Authors: Gerlitz Laima , Meyer Christopher
Published: April 2021

Despite high competition among big EU ports, such as Rotterdam, Hamburg, or Valencia, acting as Core Ports in the Trans-European Transport Core and Comprehensive Network (TEN-T), this paper addresses the marginalized decision-making capability for environmental and digital transition immanent in the Small and Medium-Sized Ports (SMSPs) ecosystems in the EU. Irrespective of topical research, little is said about SMSPs ecosystem sustainability robustness and how SMSPs can pursue the transformative way. Here, management and strategic port decision levels are rather patchy and disconnected from the operational port performance. SMSPs are bound to limited resources and low cognitive, organizational, or institutional proximity, compared to their bigger counterparts. This situation provides a lot of room for critical demarche, since in the TEN-T Network, there are 225 Comprehensive and only 104 Core Ports, the majority qualifying, thus, as SMSPs. This research aims at reducing this research-to-practice lacuna by improving limited managerial capacity of SMSPs on environmental responsibility and digital efficiency. Using an ecosystem concept and aggregated empirical data in three EU macro-regions—the Baltic Sea Region, the Adriatic-Ionian Sea Region, and the Mediterranean Sea Region, three specific decision-making tools are suggested for managerial applications to facilitate and reinforce transition in SMSPs for environmental responsibility, social equity, and economic efficiency.
The Authenticity of the Hidden Christians’ Villages in Nagasaki: Issues in Evaluation of Cultural Landscapes
Authors: Delakorda Kawashima Tinka
Published: April 2021

Located in the north-western part of Kyushu, “Hidden Christians Sites in the Nagasaki Region” were designated as a UNESCO World Heritage Site in 2018. This serial property consists of twelve sites, including the Christian villages that bear unique testimony to a cultural tradition nurtured under a long period of religious prohibition. Based on fieldwork research at Kirishitan villages in Hirado City, this paper shows how the global conservation strategies affect the local people and the sustainability of their cultural tradition. Comparing UNESCO and Japanese cultural landscape protection policies, I argue that the evaluation and selection of sites that begin at the local authorities and stakeholders’ level, is eventually reduced to tangible properties ready-made for tourist consumption. Here, the evaluation subsides under the UNESCO authenticity criteria and narrow governmental interests towards the cultural tradition it is supposed to protect. Therefore, for the protection of cultural landscapes and the living traditions, the decisions by cultural heritage protection authorities should be carefully made, based on scientific research of a cultural tradition, and in the interest of the tradition’s living successors.
Characterizations of Gelatin from the Skin of American Bullfrog (Rana catesbeiana) as Affected by Extraction Temperature
Authors: Zhang Weibo , Chen Chong , Huang Ziyu , Wang Pengjie
Published: April 2021

We investigated the effect of extraction temperature on the gel properties of gelatin from the skin of the American bullfrog (Rana catesbeiana) and the mechanisms. The textural and rheological properties of bullfrog gelatin extracted at 45 °C (G45), 55 °C (G55), and 65 °C (G65) were measured. The molecular weight distributions, microstructures, and amino acid compositions of the bullfrog gelatins were also determined. G45, G55, and G65 had gel strengths of 272.1, 225.6, and 205.8 g and hardness values of 28.1, 24.0, and 22.5 N, respectively. The gelling temperatures ranged from 19.3 to 23.9 °C, and the melting temperatures ranged from 28.9 to 31.5 °C. All the results were compared with those of commercial porcine gelatin. We propose that the higher gel strength of G45 with a higher band intensity of α2-chains compared with G55 and G65 was more likely to form ordered and strong cross-links. The gelatin extracted at a lower temperature (G45) had a finer gel structure, suggesting that it would be more difficult to disrupt by applied force. Gelatin extracted at a lower temperature demonstrated better properties with α2-chains and a fine gel structure. These results provide basic information on the extraction of American bullfrog skin gelatin for industrial applications.
Acoustic Plasmons in Graphene Sandwiched between Two Metallic Slabs
Authors: Salasnich Luca
Published: April 2021

We study the effect of two metallic slabs on the collective dynamics of electrons in graphene positioned between the two slabs. We show that if the slabs are perfect conductors, the plasmons of graphene display a linear dispersion relation. The velocity of these acoustic plasmons crucially depends on the distance between the two metal gates and the graphene sheet. In the case of generic slabs, the dispersion relation of graphene plasmons is much more complicated, but we find that acoustic plasmons can still be obtained under specific conditions.
Modeling of Vaccination and Contact Tracing as Tools to Control the COVID-19 Outbreak in Spain
Authors: Colomer Mª Àngels , Margalida Antoni , Alòs Francesc , Oliva-Vidal Pilar , Vilella Anna , Fraile Lorenzo
Published: April 2021

We developed an agent-based stochastic model, based on P Systems methodology, to decipher the effects of vaccination and contact tracing on the control of COVID-19 outbreak at population level under different control measures (social distancing, mask wearing and hand hygiene) and epidemiological scenarios. Our findings suggest that without the application of protection social measures, 56.1% of the Spanish population would contract the disease with a mortality of 0.4%. Assuming that 20% of the population was protected by vaccination by the end of the summer of 2021, it would be expected that 45% of the population would contract the disease and 0.3% of the population would die. However, both of these percentages are significantly lower when social measures were adopted, being the best results when social measures are in place and 40% of contacts traced. Our model shows that if 40% of the population can be vaccinated, even without social control measures, the percentage of people who die or recover from infection would fall from 0.41% and 56.1% to 0.16% and 33.5%, respectively compared with an unvaccinated population. When social control measures were applied in concert with vaccination the percentage of people who die or recover from infection diminishes until 0.10% and 14.5%, after vaccinating 40% of the population. Vaccination alone can be crucial in controlling this disease, but it is necessary to vaccinate a significant part of the population and to back this up with social control measures.
The Prospects of Evolution of the Baseline Systems in the Arctic
Authors: Morgunov Boris , Zhuravleva Inna , Melnikov Boris
Published: April 2021

The article discusses the notion of “baselines” and the legal framework for drawing them, as well as the practice of drawing baselines, primarily by the coastal Arctic states. As a result of analysis, we make a suggestion that the existing system of baselines in the Arctic Ocean seas may evolve on the basis of international legal rules, with due account taken of the practice of applying them, and through the use of such a legal concept as “historic waters.” The article covers the interpretation of the concept of “historic waters” in various sources, indicating how this concept is used by different states to proclaim their rights to adjacent maritime areas on historical grounds. We have drawn on our extensive research and documents identified that may be used by the Russian Federation to expand its “historic waters” on the Arctic coast. At the same time, we have not aimed at making specific proposals on changing the location of the existing baselines or declaring new Arctic water areas “historic waters.” Rather, our objective was to comprehensively study the possibility of preparing such proposals.
THE PHENOMENON OF MULTICULTURALISM OF THE EDUCATIONAL ENVIRONMENT IN THE CONDITIONS OF DISTANCE LEARNING
Authors: Artimonova Tetiana
Published: April 2021

Today’s challenges require the rethinking of role and importance of the phenomenon of the multicultural educational environment, which acquires conceptual forms, and the continuous development of digital information and communication technologies and their active use in education accordingly affect the forms, methods, means, importance of distance education and its prospects. The article considers educational theories of distance learning as a tool for the effective functioning of a multicultural educational environment.
Energy Efficiency Improvement of Vanadium Redox Flow Battery by Integrating Electrode and Bipolar Plate
Authors: Kim Min-Young , Kang Byeong-Su , Park Sang-Jun , Lim Jinsub , Hong Youngsun , Han Jong-Hun , Kim Ho-Sung
Published: April 2021

An integral electrode-bipolar plate assembly, which is composed of electrode, conductive adhesive film (CAF) and bipolar plate, has been developed and evaluated for application with a vanadium redox flow battery (VRB) to decrease contact resistance between electrode and bipolar plate. The CAF, made of EVA (ethylene-vinyl-acetate) material with carbon black or CNT (Carbon Nano Tube), is applied between the electrode and the bipolar plate to enable an integral assembly by adhesion. In order to evaluate the integral assembly of VRB by adhesive film, the resistivity of integral assembly and the performance of single cell were investigated. Thus, it was verified that the integral assembly is applicable to redox flow battery. Through resistance and contact resistance of bare EVA and CAF films on bipolar plate were changed. Among the adhesive films, CAF film coated with carbon black showed the lowest value in through resistance, and CAF film coated with CNT showed the lowest value in contact resistance, respectively. The efficiency of VRB single cell was improved by applying CAF films coated with carbon black and CNT, resulting in the reduced overvoltage in charging process. Therefore, the energy efficiency of both CAF films, about 84%, were improved than that of blank cell, about 79.5 % under current density at 40 mA cm−2. The energy efficiency of the two cells were similar, but carbon black coated CAF improved the coulomb efficiency and CNT coated CAF improved the voltage efficiency, respectively.
Digital platform of production systems
Authors: Bochkarev O.I. , Bilenko P.N. , Beltsov V.G. , Asanova E.A.
Published: April 2021

The Russian manufacturing companies are faced with the task of a technological breakthrough and bringing high-tech competitive products to world markets. The results of the study demonstrated the urgent need for enterprises to develop production systems using digital services combined into platforms. The article proposes an approach to the construction and development of production systems based on the use of both world experience and knowledge, and new digital services and systems of tools, developed at domestic enterprises. The sequence of targeted steps to implement digital transformation is highlighted.
Software-defined data storage systems
Authors:   SNT Ukraine, Lysetskyi Yu.M. , Kozachenko S.V. ,   SNT Ukraine
Published: April 2021

Every year the amount of generated data grows exponentially which entails an increase in both the number and capacity of data storage systems. The highest capacity is required for data storage systems that are used to store backups and archives, file storages with shared access, testing and development environments, virtual machine storages, corporate or public web services. To solve such tasks, nowadays manufacturers offer three types of storage systems: block and file storages which have already become a standard used for implementing IT infrastructures, and software-defined storage systems. They allow to create data storages on non-specialized equipment, such as a group of x86-64 server nodes managed by general-purpose operating systems. The main feature of software-defined data storages is the transfer of storage functions from the hardware level to the software level where these storage functions are defined not by physical features of the hardware but by the software selected for specific tasks solving. Today there are three main singled out technologies characterized by scalable architecture that allow to in-crease efficiency and storage volume through adding new nodes to a single pool: Ceph, DELL EMC VxFlex OS, HP StoreVirtual VSA. Software-defined data storages have the following advantages: fault tolerance, efficiency, flexibility and economy. Utilization of software-defined storages allows to increase efficiency of IT infrastructure and reduce its maintenance costs; to build a hybrid infrastructure that would allow to use internal and external cloud resources; to increase efficiency of both services and us-ers by providing reliable connection by using the most convenient devices; to build a portal as a single point of services and resources control.
The use of information technologies in risk management for the flight safety of aviation
Authors:   Ivan Kozhedub Kharkiv National Air Force University, Nikiforov O.V. , Dodonov O.G. ,   Institute for Information Registration Problems of the Ukraine National Sciences Academy, Putyatin V.G. ,   Institute for Information Registration Problems of the Ukraine National Sciences Academy
Published: April 2021

At present, the problem of ensuring the necessary level of state aviation flights safety in terms of hu-man and organizational factors is very urgent. Despite the ongoing measures aimed at expanding and strengthening control over the processes of aviation activity, flight incidents caused by insufficient reli-ability of personnel work and organizational errors continue to occupy leading positions. There is an in-sufficient efficiency of the flight safety management system to identify hazardous factors in their latent stage, which is necessary for the early prevention of accidents. The difficulty of timely identification of the aviation system dangerous states associated with these factors is due to the need to account, corre-late and analyze data of a very large dimension and multifacetedness. According to the authors, a suc-cessful solution to this problem is possible through the use of automated processing and cognitive com-bination of large heterogeneous information arrays based on centralized electronic systems for collect-ing, information and analytical processing and storage of information about the functioning of the avia-tion system, identified abnormal and dangerous conditions, and incidents that have already occurred. The article presents the concept of creating a promising automated flight safety management system for state aviation. The proposed system will make it possible to implement the principle of proactive detec-tion and prevention of hazardous factors and risks for flight safety, taking into account human and or-ganizational factors, based on the implementation of processes for centralized collection, generalization and analysis of big data on the state of the aviation system. Topical scientific tasks for the creation of a methodological basis for the development of special software for such an automated system have been formulated.
Automated control system for fire cutting units on a plate mill
Authors:   Institute of Mathematical Machines and Systems Problems, Ievlev M.G. , Grabovsky G.G. ,   Kyiv Institute of Automation
Published: April 2021

One of the most important indicators of a plate rolling mill efficiency is a metal consumption (cost coef-ficients) per ton of product. Reduction of metal consumption coefficients is ensured by the accuracy of the set geometric dimensions realization during the rolling, increasing the accuracy of geometric dimen-sions of the plates that are cut from the rolls on fire cutting units, as well as by operating in the minus field of tolerances on the geometric dimensions of the plates. Improving the accuracy of the geometric dimensions of the plates, cut from the rolls on the fire cutting units, is achieved through the automatic control of these units. The article describes the technical solutions, implemented in the automated con-trol system of fire cutting units (the ACS FCU) of the heat treatment department and fire cutting of a plate mill 3600. The purposes of the ACS FCU creation include an increase in accuracy and stabilization of the geometrical sizes of the work pieces cut out of plates through the automatic control; reduction of metal consumption coefficients due to the operation in the minus field of tolerances on the geometric dimensions of the work pieces; replacement of obsolete equipment with the modern one in order to in-crease the reliability of the mill equipment operation; increasing the ACS FCU service life through the use of modern equipment with high reliability characteristics; reduction of unplanned equipment down-time that may arise as a result of the ACS FCU technical means failures. The automated control system of fire cutting units has been set up, tested and put into operation; a metrological certification of the system has been carried out as well. The results of the ACS FCU testing and its subsequent operation have confirmed the system efficiency and the performance of all its intended functions. This system can be also implemented in the processes of treatment of other rolling mills, equipped with the units for the fire cutting of metal.
OBESIDAD
Authors: Pabón Carlos Andrés , Hubley Elisha , Spurrell Gerald , Smoczyk Maria
Published: April 2021

Objetivo: Determinar la prevalencia de sobrepeso y obesidad en una población de bajos ingresos de Costa Rica.

Método: Datos proporcionados por la clínica Casa de Socorro de Rincón Grande de Pavas, los cuales fueron obtenidos mediante la aplicación de una encuesta a pacientes nuevos durante el periodo comprendido entre 21 de septiembre y 20 de octubre del 2020. Se determió la prevalencia global de sobrepeso y obesidad en la población, así como su prevalencia esoecífica para hombres y mujeres, y según la edad al dividir la población en tres grupos etarios. Se analizaron la diferencia entre el nivel educativo, el nivel de ingresos mensuales y la actividad física reportada, de acuerdo al valor de IMC normal o mayor/igual a 25.

Resultados: Se determinó una altra prevalencia de sobrepeso y obesidad global, así como en el subgrupo de hombres y mujeres, además esta fue mayor en el grupo de adultos de mediana a mayor edad. Se identificaron características comunes entre los grupos de IMC elevado; incuyendo bajo nivel educativo, bajo nivel de ingresos e insuficiente actividad física diaria.

Conclusión: El sobrepeso y obesidad se encuentra en aumento a nivel mundial. Las prevalencias determinadas en una población de escasos ingresos en Costa Rica es abrumadoramente superior a la prevalencia general del país. La insuficiente actividad física es un denominador común en las alteraciones de peso corporal.
The Illusions of Inflation Targeting, With an Application to Ukraine
Authors: Gertchev Nikolay
Published: April 2021

This article reviews the analytical justification, the theoretical content, and the practical experience of inflation targeting, which has become the standard framework for monetary policy. It shows that due to the inflation-targeting literature’s neglect for the money demand as part of the monetary relation that drives price determination, it provides a distorted theoretical account of the most basic relations in a monetary economy and an illusionary vision of what a modern central bank could achieve. The last section of the article uses the recent monetary history of Ukraine to illustrate the pitfalls and illusions of inflation targeting.
Measuring the Quality of Money
Authors: Žukauskas Vytautas
Published: April 2021

This article explains the theoretical importance of the quality of money as a factor of the demand for money and develops the composite indicator that measures the quality of money for the eurozone. The demand for money, i.e., the amount of money people keep in their balances, besides other well-known factors (e.g., interest rate, price level, and income) depends on how people subjectively perceive a particular money’s ability to serve its main functions: a medium of exchange, a store of value, and the unit of account. These properties depend not only on the instruments of monetary policy and the extent to which they are used, but also on the institutional framework of the monetary system. The article suggests that the quality of money is influenced by the institutional framework and monetary policy and that thus the quality of money is a separate channel for the transmission of money policy that works not through the usual mechanism of changing the supply of money, but through central banks affecting the demand for money. An important contribution of this article is that it develops an empirical composite indicator, which measures the quality of money in the eurozone in 1999–2019 and shows the gradual decline in the quality of euro.
PENGARUH PENGETAHUAN KEUANGAN, PENGALAMAN KEUANGAN, TINGKAT PENDAPATAN, DAN TINGKAT PENDIDIKAN TERHADAP PERILAKU KEUANGAN
Authors: Devi Lisna , Mulyati Sri , Umiyati Indah
Published: April 2021

Tujuan Penelitian ini adalah untuk mengetahui pengaruh pengetahuan keuangan, pengalaman keuangan, tingkat pendapatan, dan tingkat pendidikan terhadap perilaku keuangan keluarga. Jenis penelitian yang digunakan dalam penyusunan penelitian ini adalah kuantitatif. Data primer yang diperoleh dari responden dengan teknik pengumpulan data berupa kuesioner. Populasi dalam penelitian ini yaitu kepala keluarga di Subang dengan sampel sebanyak 120 responden. Adapun metode analisis yang digunakan adalah uji validitas dan reliabilitas. Uji Normalitas Uji Heterokedastisitas dan Uji Multikolonieritas. Uji t, Uji F dan koefisien determinasi. Hasil uji hipotesis secara parsial menunjukkan bahwa pengetahuan keuangan, tingkat pendaptan, dan tingkat pendidikan tidak berpengaruh terhadap perilaku keuanga keluarga, sedangkan pengalaman keuangan berpengaruh postif signifikan teradap perilaku keuangan keluarga. Hasil uji hipotesis secara simultan menunjukkan bahwa pengetahuan keuangan, pengalaman keuangan, tingkat pendapatan, dan tingkat pendidikan secara simultan berpengaruh positif signifikan terhadap perilaku keuangan keluarga. Berdasarkan uji T dan uji F maka hipotesis penelitian dapat diterima pada tingkat signifikansi 5%.
Impact of Distance on State University Enrolments: A Panel Data Analysis
Authors: BEKAROĞLU Can
Published: April 2021

This study aims to explain the impact of distance on state university enrolments in Turkey based on the student data received from Canakkale Onsekiz Mart University (ÇOMÜ) extending our previous study by incorporating 19 years of panel data. We are able to corroborate our earlier findings, explaining 70% of the variation in student composition by using 3 highly statistically significant variables; i) distance to university city, ii) distance to major cities, and iii) the number of students who pass the university entrance test, in addition to trend effects. Further analysis more robustly shows that a relatively significant gender disparity still persists and distance is found to be much less effective on female students. Additional parametric efficiency analysis also reveals that, compared to the predicted results, conservative and mostly landlocked provinces send increasingly fewer students to ÇOMÜ while nearby provinces, Eastern Anatolia and the Black Sea Region shows a much greater interest.
Peculiar Features of Small-scale Assessment of the Groundwater Protectiveness against Pollutions
Authors:   Belousova A.P.
Published: April 2021

Approaches to small-scale assessment of the groundwater protection against pollution on the territory of major regions of this country have been considered. Various methodical aspects have been used depending on the tasks to be solved. Smallscale assessment is mostly based on qualitative approaches but in some cases simple calculations of intensity of neutral pollutants migration through a protective zone, as well as experimental data on the pollutants migration velocity in assessment of groundwater protection degree are applied. Only qualitative characteristics of various geological and hydro/geological features of territories are used for major regions comprising territories of different geographical conditions.
Pengaruh Corporate Governance Terhadap Inefisiensi Investasi Dengan Free Cash Flow Sebagai Pemoderasi
Authors: Perdana Djaja , Subagyo Hasan
Published: April 2021

The level of corporate investment inefficiency is closely related to the effectiveness of corporate governance practices implemented by the largest shareholders and board of directors. This paper discusses empirical research that investigates the impact of the largest shareholders and board size on investment inefficiency with free cash flow as a moderating variable. This study uses a sample of 152 public companies registered in Indonesiaâ€™s capital market for the fiscal year ended on December 31, 2014 to 2018. This study uses a multiple regression method with the Ordinary Least Square (OLS) approach. This study find that the largest shareholders and board size are significantly negative impact on investment inefficiency, but the free cash flow doesnâ€™t moderate the influence of board size on investment inefficiency.
Features of the Incidence of Shigellosis in the Karachay-Cherkess Republic in 2005–2019
Authors: Batchaev KhKh , Pilipenko TD , Sereda LG , Petryuk TA
Published: April 2021

Introduction: In the Karachay-Cherkess Republic (KCR), dysentery and salmonellosis rank high in the etiological structure of intestinal infections and arose interest in studying the incidence of shigellosis in the republic. Our objective was to analyze the incidence of bacillary dysentery, to study Shigella landscape in the territory of the KCR in 2005–2019, and to compare the findings with similar variables in other regions of the Russian Federation. Materials and methods: We analyzed data of the Center for Hygiene and Epidemiology in the Karachay-Cherkess Republic on the incidence of shigellosis and Shigella isolates obtained from human stool samples in the KCR in 2005–2019 and compared them with available results of similar studies conducted in other parts of the country. Results: When analyzing the curves of the incidence of dysentery in the KCR and the Russian Federation, we found that they were asynchronous. In the KCR, the curve rose twice (in 2005–2006 and 2011–2014), while in the Russian Federation, the incidence rates demonstrated a gradual decrease. Over the whole observation period, only in 2018–2019 the incidence of shigellosis in Karachay-Cherkessia was 1.3–1.8 times lower than in the country as a whole. We also established that, in contrast to the Russian Federation, Shigella sonnei represented by the biochemical variant IIg prevailed in the structure of shigellosis in the republic. The analysis of the relationship between the number of detected samples of dairy products of poor microbial quality and the incidence rate of Sonne dysentery showed that those two variables did not always correlate. Molecular genotyping of Shigella sonnei strains by pulsed-field gel electrophoresis (PFGE) allowed us to assume the imported nature of the pathogen. The import could have occurred during the Hajj to Mecca and Medina of KCR residents in 2012. Conclusion: Shigella sonnei strains differing in the presence of tetracycline and chloramphenicol (levomycetin) resistance determinants are circulating in Karachay-Cherkessia. No bacteria resistant to ciprofloxacin were isolated in the republic in 2005–2019.
ON THE ISSUE OF IMPLEMENTATION OF INTERNATIONAL EXPERIENCE IN FINANCIAL ASSETS REGULATION: CRYPTOCURRENCIES
Authors: LIUBKINA Olena , TKACHENKO Oleksandr
Published: April 2021

Introduction. The digitalization of the economy is closely linked to the formation of an effective legal framework. Any development or operation of digital instruments must be accompanied by appropriate financial and legal regulation. The study of the functioning of digital financial assets allowed us to conclude that, unfortunately, their rapid development is observed against the background of the lag of regulatory regulation of the relevant legal relations that are formed as a result of such activities. A critical scientific analysis of international experience in the field of financial regulation of cryptocurrencies has identified a number of key generalizations.

The purpose of the article is to identify the main markers of digital financial assets, study international experience in financial regulation of virtual assets, including cryptocurrencies, identify opportunities to implement positive foreign practices to Ukrainian realities and diagnose the current state and prospects of cryptocurrency in Ukraine.

Results. The specific characteristics of digital financial assets are substantiated, namely: freedom of issue, availability of cryptocurrencies, absence of intermediaries, high degree of protection, openness to developers, integration with the latest technologies that produce new digital products. The international practice of state regulation of cryptocurrencies is generalized in terms of both the interpretation of the conceptual apparatus and in view of the qualification of the mechanism of conducting operations with digital assets. It is proved that in Ukraine from the point of view of legal regulation of cryptocurrency is still outside the full framework of the legal field of domestic legislation. The main innovations and specifics of regulation of the market of virtual assets in accordance with modern Ukrainian realities are determined.

Conclusions. The difference between national laws in the field of regulation of virtual assets is proved. It is argued that the main vector of regulation is aimed at strengthening control over the transparency and accountability of transactions with virtual assets, cybersecurity and mandatory user verification. The main directions of increasing the settlement and trust in virtual assets are formulated: production of standards and rules of cryptocurrency circulation, in order to bring it to the rank of a competitive means of payment; consolidation of the official status of cryptocurrency; formation of an open ecosystem through effective interaction of all participants in the process of buying / selling cryptocurrency; formation of a legal trading platform for cryptocurrency circulation; support of information literacy of the population to understand the benefits and risks of virtual currency etc.
Taponamiento cardíaco masivo como complicación de síndrome de niño maltratado
Authors: Barrón-Balderas Alejandro , Álvarez-Corona Silvia , Lona-Reyes Juan , Robledo-Aceves Mireya , Orozco-Alatorre Luis
Published: April 2021

La agresión con objetos punzo-cortantes o punzo-contundentes es una forma rara de maltrato infantil (MI) y se categoriza en la sociedad como un intento de infanticidio u homicidio. El propósito de este informe es presentar un caso de taponamiento cardíaco (TC) originado por un trauma torácico reiterativo como consecuencia de agresión física.
Il lessico del magistero nelle prose erudite di Giovanni Boccaccio
Authors: Fritz Eleonora
Published: April 2021

The contribution aims to illustrate the results of the research conducted on the lexicon of the Petrarch-Boccaccio magisterium relationship. The research also made use of the comparison between Boccaccio's various masters: Petrarch on the one hand, Andalò del Negro and Leonzio Pilato on the other.
The results of the research have shown the substantial difference of the Petrarchian magisterium compared to that of Leonzio or Andalò. Petrarch is a supreme teacher unlike the other two, considered by Boccaccio to be technical masters. Boccaccio in fact systematically attributes to Petrarch the noun preceptor, a very generic name: he is considered not only a teacher of literature but also of life. Boccaccio also expects from him a teaching that will lead him to an ethical conversion, as evidenced by the insistent presence of the lexicon pertaining to the moral sphere attributed to him.
Ad alta voce: l’essenza fonico-acustica e gestuale del cursus nel Decameron
Authors: Mondani Paola
Published: April 2021

Moving from the studies carried out by Alfredo Schiaffini and Vittore Branca on Boccaccio’s reuse, in its prosaic masterpieces (the Filocolo, the Elegy of Madonna Fiammetta and the Decameron), of mediaeval rhetorical-rhythmics rules, the essay offers an analysis of cursus applied to Decameron, realized by separating the text into three parts: introductive-proemial section, narrative section and dialogue section. The rhetorical devices are more strictly employed both in the first part, when the author or the internal storytellers speak, and into speeches given by characters in the middle of the narration. This, according to the original function of Greek cursus, would suggest its use in Boccaccio’s prose as a mimetic device, that replicates the oratory declamation.
«Ut testatur Ovidius»: Boccaccio lettore dei commenti alle Metamorfosi
Authors: Ciccone Lisa
Published: April 2021

The article investigates the relationship between Boccaccio's Genealogie and the exegesis of Ovid's Metamorphoses. For each character included in his genealogy, Boccaccio reports first of all the contents of the myth related to it and then the different literal and allegorical interpretations. The main sources are, besides Ovid, Paolo da Perugia and a mysterious Theodontius, who can be identified with a commentary on the Metamorphoses produced in the 11th or 12th century. The article aims to demonstrate that Boccaccio follows the method used by medieval exegetes of the Metamorphoses: rejecting the pagan contents of the myth, the commentators offered an allegorical and moralising interpretation, in fact rewriting the Metamorphoses as a 'medieval' work.
La bisbetica domata: proposta di lettura di Decameron IX 9 attraverso i proverbi e i novellieri toscani tra Tre e Quattrocento
Authors: Cellai Valerio
Published: April 2021

The essay focuses on the analysis and the use made by G. Boccaccio of a proverb inside Decameron IX.9. After a brief overview of the use of proverbs and auctoritates in the medieval rhetorical treatise and a summary of the studies over Boccaccio's utilization of proverbs, it will be tried to give an interpretation over the proverb in Decameron IX.9. Then it will be analyzed the comment over this proverb made by Raimondo d’Amaretto Mannelli and some rewriting of this novella by Franco Sacchetti, Giovanni Fiorentino and inside the Motti e Facezie del Piovano Arlotto.
Boccaccio, il Decameron e la Crusca: le fonti spogliate dagli Accademici
Authors: Canneti Caterina
Published: April 2021

This survey concerns the lexicographic presence of Giovanni Boccaccio’s Decameron in the Vocabolario of the Accademici della Crusca (from the first to the fourth edition). Boccaccio is the author that counts 15.600 occurrences (considering also his others literary works) already in the first edition. This is a significant situation about Decameron, because we know that a lot of its passages went through modifications and censorship: all of these interventions on Boccaccio’s text would have had some influence on the quotations into the Vocabolario. Starting from the declarations of the Accademici, the study wants to investigate about the employment of Decameron’s sources during the works for the Vocabolario, involving editions, manuscripts and Accademici’s autograph papers.
The relationship between parenting styles and children’s behavior at a dental appointment
Authors:   Tyumen State Medical University, Tyumen, Nagaeva M. O. , Sultanova R. R. ,   Tyumen State Medical University, Tyumen, Nikolaychuk V. S. ,   Tyumen State Medical University, Tyumen
Published: April 2021

Aim. To identify the relationship between the parenting style and the child’s behavior during a dental appointment. Materials and methods. This study involved 110 children and their parents. The children met the following requirements: age from 4 to 6 years, no history of systemic and mental illnesses, primary admission. We used the search methods, questionnaires, and statistical calculations. Information from parents was collected using Stepanov’s questionnaire “Styles of parenting behavior” and Frankl’s behavioral scale. Results. Analysis of the results showed that 60% of parents correctly predicted the behavior of their child, namely families that adhere to authoritative, liberal and indifferent styles. The most positive behavior at a dental appointment was observed in children growing up in a family with an authoritative parenting style. Conclusion. The data confirms the connection between the parenting style and the behavior of children in dentistry. The definition of parenting style is important for the interaction of the child and the pediatric dentist, and should be taken into account when choosing an effective method of behavioral guidance.
Volume formation of the orbit in hemoblastosis
Authors:   Tyumen State Medical University, Tyumen, Ponomareva M. N. , Pakhirko I. N. ,   Regional Clinical Hospital No 2, Tyumen, Arefieva I. A. ,   Regional Clinical Hospital No 2, Tyumen, Klimov E. S. ,   Tyumen State Medical University, Tyumen, Covina E. A. ,   Regional Clinical Hospital No 2, Tyumen, Golubev D. V. ,   Regional Clinical Hospital No 2, Tyumen
Published: April 2021

Hematology is the most important branch of practical medicine, thanks to significant advances in the diagnosis and treatment of hemoblastosis. The earlier the timely complex treatment is started, the better the vital prognosis and fewer complications. Aim.To present a clinical case of volumetric orbit formation in a 67-year-old man with hemoblastosis. Materials and methods. A retrospective analysis of the dynamics of the development of clinical manifestations and diagnostics of the volume formation of the orbit in a patient born in 1954 was carried out. Results. The patient suffers from diffuse non-Hodgkin’s lymphoma, unspecified, with lesions of the axillary lymph nodes on both sides, the soft tissues of the chest on the right, and the peritoneum. Chronic pain syndrome. The diagnosis was made in the oncological dispensary, where he was in 28.12.2020. Complaints from the organ of vision appeared on 09.01.2021, but the patient was not examined by an ophthalmologist. The immunohistochemical study of 15.01.2021 confirmed the morphological picture of the lymphoproliferative disease, but the patient did not receive specialized antitumor therapy, and therefore the ophthalmic symptoms continued to increase, vision loss and pain syndrome increased. Regarding the above complaints, the patient went to the emergency room of ophthalmological care. Computed tomography of the brain and orbits was performed in addition to standard ophthalmological examinations. The formation of the left orbit with exophthalmos was diagnosed. Conclusion. This clinical case shows that in male patients, aged 67 years, the ophthalmological manifestations of non-Hodgkin’s lymphoma may be metastasis to the orbit with a gradual increase in the clinical picture (displacement of the eyeball, movement restrictions, exophthalmos), for 2 weeks, while maintaining visual functions (visual acuity 0.7-0.8) and the occurrence of conjunctivitis.
Mobile devices as a means of visualization in remote education in a medical university
Authors:   Tyumen State Medical University, Tyumen, Katkova A. L. , Vokhmintcev A. P. ,   Tyumen State Medical University, Tyumen, Petrova Yu. A. ,   Industrial University of Tyumen, Tyumen
Published: April 2021

Objective. The main goal of this work was to describe the concept of a mobile application that supports the functions of an electronic board for mobile devices with a touch screen. Material and methods. The work uses theoretical methods: a review of the literature on the research problem, analysis of publications, as well as an empirical method of observing the distance work of Tyumen State Medical University teachers. Results. The original article reflects the views of the teacher of the medical university on the problem of distance education during the pandemic of the new coronavirus infection and contains a practical proposal for creating a mobile application with which it is possible to facilitate teacher-student interaction during practical sessions conducted using video conferencing systems. The essence of the proposed concept is to synchronize the operation of a personal computer and a mobile device with a touch screen (phone, tablet), as well as a video conferencing system, in which a remote lesson is held, through a mobile application – a virtual board. Such an application turns the touch screen of a mobile device into an analogue of a graphics tablet, on which you can write using any suitable object. In this application the teacher has administrative permission. He can give or restrict access to the virtual clipboard to any student. This will bring the virtual educational process as close as possible to the real one. Conclusion. When implemented thorough of this idea should ensure improve the end result of education. The main disadvantage of this idea is the need for the teacher and students to have both a computer and a mobile device with a touch screen. Also the operation of this application will be difficult in places with low-speed Internet, or when Internet connection is not available.
Intervertebral disc’s features in postnatal period of ontogenesis
Authors:   South Ural State Medical University, Chelyabinsk, Kurenkov E. L. , Makarova V. V. ,   Medical unit of the Ministry of Internal Affairs of Russia in the Chelyabinsk region, Chelyabinsk,   South Ural State Medical University, Chelyabinsk
Published: April 2021

Aim. To reveal intervertebral disc’s morphological patterns of postnatal period. Material and methods. The morphometric study was performed on histological material obtained during 100 cases of surgical interventions on the lumbar spine for radicular syndrome. The age of the patients ranged from 19 to 77 years, median age was 45,0 (36,0; 55,0). Also, it was examined 36 samples of the intervertebral discs’ C5C6, D5D6, L5S1 anterior parts (including nucleus pulposus and annulus fibrosus) obtained in 12 cases of autopsies. The age of individuals ranged from 34 to 94 years, median age was 61,0 (50,5; 71,8) years. Staining with hematoxylin-eosin, Van Gieson method and silver impregnation was performed according to standard procedure using ready-made reagent kits. Kruskal-Wallis test and Dunn test were used for cross-group comparisons. Results. According to the morphological state of collagen fibers, all samples were divided into 4 groups. To assess the regenerative state of fibrous cartilage, a calculated coefficient reflecting the ratio of isogenic groups of chondrocytes to single chondrocytes was used. When comparing the coefficient value between the groups, statistically significant differences were obtained (p = 0,0038). The value of calculated coefficient for types I and IV-V were similar. The maximum range of values fell on type III, and type II was found in intermediate position. Statistically significant differences in the calculated coefficient between types I and III were obtained. The absence of differences in the value of the calculated coefficient between types II and III could be explained by fact that type II reflected transient state between types I and III. Type IV was found in intermediate position, as type II did. Conclusion. The intervertebral disc of postnatal period was synchondrosis. Its morphological changes didn’t depend on age and are probably related to the genetically determined strength properties of fibrous cartilage, as well as lifestyle. The proposed calculated coefficient can serve as a preliminary indicator of intervertebral disc’s biological aging stage, as well as an additional evaluation criterion in combination with color gradation based on the results of staining by Van Gieson method.
Model of hypereosinophilic syndrome in superinvasive opistorchosis. Report I. Liver pathology
Authors:   Tyumen State Medical University, Tyumen, Lazarev S. D. , Khadieva E. D. ,   Regional Clinical Hospital, Khanty-Mansiysk,   Khanty-Mansiysk State Medical Academy, Khanty-Mansiysk, Uruzbaev R. M. ,   Tyumen State Medical University, Tyumen,   Multidiscipline Clinical Medical Center «Medical city», Tyumen, Galenko O. V. ,   Tyumen State Medical University, Tyumen, Bychkov V. G. ,   Tyumen State Medical University, Tyumen
Published: April 2021

Hypereosinophilic syndrome (HES) was modeled in mature Syrian hamsters of both sexes by the means of infecting them with O. felineus metacercariae (100 larvae); there were two superinvasions, of 100 larvae each. The animals were butchered on 10th day after invasion, the first superinvasion and, on 24th day after the second superinvasion. The material (liver) was stained by histological methods, the IHC method was used. The manifestations of HES were revealed: extensive fields of eosinophilic cell proliferates (index – 0.52), the absence of proliferation and differentiation of progenitor cells into elements of cholangio- and hepatocellular diferons (CCD and HCD). After the second superinvasion, a depletion of the liver’s replicative potential was noted: in the areas of infiltrates from eosinophils, the proliferation of connective tissue, diffuse and focal fibrosis were observed.