bluuebunny/crossref_metadata_2025 huggingface dataset:
Effective Online Hotel Reputation Management Strategies of TripAdvisor
Authors:   The Tourism Sciences Society Of Korea, Hwang Soo-Jung , Ham Ju-Yeon , Chung Nam-Ho
Published: November 2021

Recently, hotel companies have been struggling with low economic growth, population decline and the oversupply of hotel markets. In particular, hotels are expected to suffer from external threats such as COVID-19. In this situation, the role of online word of mouth is becoming more important due to the influence of the Internet. While the importance of online reviews is emphasized from the perspective of hotel managers, current online review studies in the hospitality industry have been conducted primarily from the user's perspective and not many studies address online reviews from the perspective of hotel managers. Therefore, this study seeks to explore factors affecting ranking on TripAdvisor, one of the online review platforms. To present implications for the effective online review management strategy of the hotel. we attempted to explore the perspectives of hotel managers rather than the perspective of hotel customers A total of 103 hotel data were collected and the fuzzy-set Qualitative Comparative Analysis (fsQCA) was applied to analyze the data, resulting in a total of 4 types of patterns. We discovered four strategies to increase the rankings of TripAdvisor. First, in the case of a large hotel whose location is far from the airport, it is necessary to focus on the positive reviews. Second, if the latest number of reviews was not large, the manager's response was the most important regardless of the size or location of the hotel. Third, when the location of the hotel was close to the airport, manager's response was the most important. Lastly, in the case of a large hotel, it was most important to focus on the number of latest reviews. Based on the above strategy, practical implications for hotels to increase TripAdvisor's rankings were drawn and future research directions were presented.
Effect of Process Variables on Rice Flour Functional Properties, and Porous Structure of Rice and Wheat-Based Leavened Food Products
Authors: Rathnayake Heshani Anupama , Navaratne Senevirathne , Navaratne Champa
Published: November 2021

Research background. Various processing techniques significantly affect physicochemical and functional properties of rice flour and the quality of the final products. This study aims to modify rice flour with different treatments and to select the best one to develop rice and wheat-based leavened food products.
Experimental approach. Eight treatment combinations were applied on rice flour according to 23 factorial design considering three variables at two levels, namely, pretreatment of rice grain (heat-moisture treatment, dual modification treatment: soaking of rice grains in NaHCO3 solution followed by heat treatment), grinding method (dry or wet grinding), and flour particle size (75−180 and <75 μm). Eight dough samples were prepared by mixing 50 g rice flour from each treatment with 50 g wheat flour. Then, the dough samples were subjected to fermentation and gelatinization under pressure (externally applied
1.0 kg/cm2 initial air pressure) in a pressure adjustable chamber.
Results and conclusions. Rice flour sample with particle size of 75–180 μm that underwent heat-moisture treatment followed by wet grinding improved the gas retention capacity of the leavened dough. With the externally applied initial air pressure of 1.0 kg/cm2, we obtained highly porous and better textured rice and wheat-based leavened food products.
Novelty and scientific contribution. Rice flour can be modified using the described method to improve its functional properties, and the textural and structural properties of rice and wheat-based leavened food products. Also, conducting fermentation and gelatinization under pressure is a novel food processing technique, which contributes to restricting the escape of gas from leavened rice/wheat composite dough mass.
ANNEALING TEMPERATURES’ EFFECTS ON MICROSTRUCTURE AND OPTICAL PROPERTIES OF Ba0.95Sr0.05TiO3 FILMS
Authors: Iriani Yofentina , Nurosyid Fahru , Mayasari Ratna , Sandi Dianisa Khoirum
Published: November 2021

ANNEALING TEMPERATURES’ EFFECTS ON MICROSTRUCTURE AND OPTICAL PROPERTIES OF Ba0.95Sr0.05TiO3 FILMS. Ferroelectric materials, one of which is Barium Strontium Titanate (BST), can be applied for photovoltaic. Ferroelectric films function as the P-type semiconductor in the P-N junction. BST (Ba0.95Sr0.05TiO3) films have been deposited on Pt/Si (111) and quartz substrates via the CSD method prepared by spin coater. The films were annealed at various temperatures of 800 °C, 900 °C, and 1000 °C to observe the annealing temperatures' effects on the microstructure and optical properties of the BST films. From the XRD results, the intensity of diffraction peaks gets higher along with the higher annealing temperature. It thus causes the level of crystallization and the crystal size of the Ba0.95Sr0.05TiO3 films to increase. The morphology results reveal that the grains size of the Ba0.95Sr0.05TiO3 films is getting larger with the higher annealing temperature. The optical properties examined in the Ba0.95Sr0.05TiO3 films include absorbance and bandgap energy values. Values of bandgap energy show a decrease with increasing sintering temperature. The smallest bandgap energy of the Ba0.95Sr0.05TiO3 film is achieved at 1000 °C of 3.20 eV. BST films were annealed at temperature 1000 °C attained from this study can be considered as candidate for a photovoltaic ferroelectric material.
From the Older Generation of Irkutsk Historians. Yuri Alexandrovich Petrushin: 70 Years since Birth
Authors: Ivanov Alexander , Kuznetsov Sergey
Published: November 2021

The article is dedicated to the 70th anniversary of Professor Yu. A. Petrushin’s birth, a famous Irkutsk historian. The text includes description of the main stages of his life, including his scientific and pedagogical activity. The main directions of the scientist's research are considered in the article, such as historiography and methodology of Russian history, the history of the Siberian village and the repressive policy of the Soviet state. The main monographic works of Professor Petrushin, which include his views on the problems of the resettlement of peasants to Siberia from the center of Russia at the beginning of the twentieth century, were reviewed. The assessments made by scientist regarding collective farm construction, industrialization of industry in the 1930s and socio-economic development of the region in the Soviet period of our country's history were also in focus of the authors’ attention. The article emphasizes the role of Historical Faculty of Irkutsk State University, where Petrushin’s development as a historian took place.
U.S. & China Approaches to Global Internet Governance: "New Bipolarity" in Terms of "the Network Society"
Authors:   RUDN University, Degterev Denis ,   MGIMO University,   St. Petersburg State University, Ramich Mirzet ,   RUDN University, Piskunov Danil ,   RUDN University
Published: November 2021

From the perspective of power transition theory, international relations system is gradually entering the phase of "power transition" where the United States, as a global hegemon, seeks to maintain the existing world order, and China establishes alternative international formats to reorganize the system of international relations and strengthen its structural power. Cyberspace and technological sphere are becoming the field of non-violent competition between states, which makes the study of global governance of cyberspace critical for the understanding of the outlines of the "new bipolarity". The analysis in the paper is focused on U.S. & China approaches to global governance of cyberspace through the prism of Manuel Castells' theory of "network society". The authors aimed to determine the directions of the U.S. and China policy in the course of four types of "power" in cyberspace: networking power, network power, networked power and network-making power. Present analysis concludes that the United States play crucial role in the course of all four types of "power" at the expense of decentralized model of Internet governance which is based on the idea of "multistakeholderism". NGO and other entities play a decisive role in such a model. Nonetheless, China has already developed necessary tools for reforming the present system of global governance of cyberspace based on centralized model with the leading role of United Nations as an international governance organization and state as a basic actor. The main beneficiaries of the centralized model are developing countries, which are unable to influence the global governance of cyberspace under the dominance of private companies from developed countries.
The Struggle for Recognition or Enhancement of Satus: Conditions for the Stability and Development of Unrecognized States Using the Example of Eurasia
Authors:   HSE University, Bratersky Maxim , Skriba Andrei ,   HSE University, Sapogova Arina ,   HSE University
Published: November 2021

In this article, the prospects or changing the status of unrecognized states in Greater Eurasia are analyzed. Status and recognition are close but distinct categories in international relations (IR) theory and international law. Status defines a state’s rank in the hierarchical international system. Recognition is a different category; legally, it defines whether other states recognize a particular state as fully established and sovereign. Sovereignty is a third category related to the issue of recognition but not equal to it since it includes internal and external (international) sovereignty. There are examples of sovereign states that effectively control their territories and collect taxes, but which are not recognized as sovereign by other states. The analysis in this article focuses on whether an unrecognized state can strengthen its status and improve its position in the international system. It is argued that this is possible, and that the absence of international recognition should not be regarded as an unsurpassable impediment to the economic development of the country.
Ten Years Ago, the World Trade Organization Opened Its Doors to Russia
Authors:   Higher School of Economics, Portanskiy Alexey ,   IMEMO RAS, Galchenko Evgeniy ,   NRU HSE
Published: November 2021

This article begins with a brief discussion of the background of the USSR/Russia rapprochement with the General Agreement on Tariffs and Trade/World Trade Organization (GATT/WTO) and some of the acute problems of the negotiation process. It is argued that the Russian Federation has received acceptable, balanced conditions of membership. The advantages gained during the first years of WTO membership are listed, both for the national economy and in the foreign arena. However, it is shown that, 10 years later, the benefits of membership are significantly lower in comparison with initial projections. This gap is attributed to the state of the Russian economy and the extinction of the continuing economic model based on the extraction and export of raw materials. The Russian economy needs real structural reforms and modernization, which would change the structure of exports in favour of finished products and modern services. Only in this case can the benefits of WTO membership increase significantly, justifying the original forecast. The article concludes with a discussion of current challenges in the world economy and trade, the crisis experienced by the WTO, and the active position of the Russian Federation on the future reform of the WTO.
The Collapse of the Appellate Body as a Determining Factor of the WTO’s Future
Authors:   National Research University Higher School of Economics, Kalachyhin Hryhorii M.
Published: November 2021

The World Trade Organization (WTO) is one of the leading institutions involved in global economic regulation. Its purposes are to ensure multilateral cooperation on the liberalization of international trade, harmonize existing standards and requirements, and peacefully resolve trade disputes between countries. Since 11 December 2019, dispute resolution has been handicapped due to the consistent blocking of the appointment of members to the WTO Appellate Body (AB) by the United States. This has reduced the multilateral trading system’s (MTS) predictability and threatens its final decay. In this article, the fundamental and formal causes of the collapse are described, and its circumvention mechanisms and effectiveness are discussed. At the same time, an assessment is given of the possibility to overcome the collapse in 2021, considering the change of the U.S. president and other events. Special attention is paid to Russia’s position and its current and potential losses. Finally, the issue of dispute resolution through regional trade agreements is proposed for discussion. The fundamental reasons for the collapse were the shifting balance of power in the world order and the WTO’s inflexibility in adjusting the rulebook and its procedures. The main reasons for the U.S.’ dissatisfaction are objective but based on formalities; the blockage of the AB is an overreaction. Moreover, the U.S.’ position on this issue has not changed with the new president. As a result, there is abuse of the current situation as WTO members file appeals “into the void.” Existing tools to circumvent the collapse are partial and not yet popular among WTO members. Russia needs to resume the AB’s work to complete previously started high-profile disputes and to defend its interests in the future.
The European Union’s Toolkit for the Regulation of the Digital Economy (analytical review)
Authors:   Russian Presidential Academy of National Economy and Public Administration, Popova Irina
Published: November 2021

The European Union (EU) is trying to increase its influence on the international regulation of the digital economy through domestic and foreign policy initiatives. The EU’s digital strategy, adopted in 2020, envisages measures to further consolidate the single digital market and promote EU standards and regulation internationally. The main goal of the strategy is to ensure the EU’s digital sovereignty. This objective is at the core of policy measures in three priority areas: the elimination of remaining barriers in the internal market, the development of advanced technologies, and the safeguarding of the rights, freedoms and development of democracy in Europe. These three strategic priorities determine sectoral policies: 5/6G development, high performing computers, regulation of digital markets and platforms, cybersecurity, and data governance. The EU uses regulatory, economic, institutional, networking, and foreign policy instruments and mechanisms to achieve its objectives in specific policy areas. Regulation includes further raising standards for personal data protection and consumer rights, control over digital platforms, laying down a legal framework for the development of cutting-edge technologies, attracting investments, and allocating the EU’s own resources to potentially occupy niches in international markets in the future, all of which will strengthen the EU’s claim to leadership in regulating the digital economy and ensure its digital sovereignty. Foreign policy mechanisms are an important part of the toolkit and include a developed European diplomacy, established ties through the Neighbourhood Policy, and the conditionality of development aid.
Pandemic-induced changes in the SDG priorities and implementation mechanisms in the international cooperation system (analytical review)
Authors:   Russian Presidential Academy of National Economy and Public Administration, Sakharov Andrei
Published: November 2021

The COVID-19 pandemic has prompted a rethinking of the approaches to the implementation of the 2030 Agenda for Sustainable Development and the UN Sustainable Development Goals, both nationally and within the multilateral system. The crisis has forced international actors not only to reassess humanity's capability to achieve the Goals by 2030, but to question the relevance of the Agenda's priorities in the new environment. This work reviews the positions of key international institutions on sustainable pathways to global economic recovery.
Direito à saúde, racionalidade e judicialização: uma revisão integrativa da literatura de 1988 a 2020
Authors: Borchio Fabiana Dias Duarte , Rezende Manuela Capanema Bahia de , Zocratto Keli Bahia Felicíssimo
Published: November 2021

Objective: describe the main causes and consequences of the exponential increase in the judicialization of the right to health in Brazil. Methodology: integrative literature review on the judicialization of the Unified Health System (SUS, in Portuguese). The search for the studies took place in the database of the Virtual Health Library (VHL) and it was selected scientific articles published from 1988 to 2020 in Portuguese, which analyzed the Brazilian context and were available for free in the online format. Results: the main reason for health demands in the judiciary is the access to drugs, the impact of the Medical Judicialization in the budget and financing of SUS may compromise public health policies. Conclusion: there is a need for greater articulation of the various sectors, in the sense of balance as a need for SUS users and the availability of State resources, specifically the collective well-being.
O impacto da Desvinculação de Receitas da União na efetivação do direito social à saúde durante a pandemia de COVID-19 no Brasil
Authors: Goñi Álvaro Russomano , Echeverria Mariana Silveira
Published: November 2021

Objective: to discuss the impacts of the untying of federal revenue in the realization of the social right to health during the COVID-19 pandemic regarding the installed capacity of Intensive Care Units in Brazil. Methodology: an analysis of the values unlinked by the Government was conducted in 2016 and 2017, with data available from Federal Government's Transparency Portal, in comparison with the cost and installed capacity of Intensive Care Units in Brazil in 2020. Results: with the untying of revenues, the Union did not apply, in the period analyzed, the minimum constitutionally established in health actions and services. This situation led to underfunding of health, causing a negative impact on the installed capacity of beds in the Intensive Care Unit, especially in North and Northeast regions, in combating the COVID-19 pandemic. Conclusion: the untying of federal revenues removed resources from the health budget and prevented the adequate structuring of the health system regarding the Intensive Care Units in Brazil to face the coronavirus pandemic.
Acceso a información de los registros sanitarios de medicamentos en el marco del derecho a la protección de la salud
Authors: Mora Freddy Arias , Madrigal Randall Madrigal
Published: November 2021

Introduction: the right of access to administrative information is a fundamental right enshrined in the Political Constitution of Costa Rica. The information that companies present regarding safety, quality, and efficacy for the State to grant approval to market a drug in the country is necessary for a rational use of drugs. Objective: To determine if the Costa Rican population has access to the public information of the sanitary registry of a medicine. Methods: a detailed review of the national regulations related to access to public information was made and its application to the records of health records in the country. Results: According to national legislation, this information is publicly accessible, except for data on new substances. However, the Costa Rican Ministry of Health does not allow citizens to know this information, as it does not have a public database, accessible in real time, from a digital platform. Conclusion: there is a violation of the fundamental right to access administrative information by the Ministry of Health of Costa Rica.
Correspondence between Site Amplification and Topographical, Geological Parameters: Collation of Data from Swiss and Japanese Stations, and Neural Networks-Based Prediction of Local Response
Authors: Bergamo Paolo , Hammer Conny , Fäh Donat
Published: November 2021

We address the relation between seismic local amplification and topographical and geological indicators describing the site morphology. We focus on parameters that can be derived from layers of diffuse information (e.g., digital elevation models, geological maps) and do not require in situ surveys; we term these parameters as “indirect” proxies, as opposed to “direct” indicators (e.g., f0, VS30) derived from field measurements. We first compiled an extensive database of indirect parameters covering 142 and 637 instrumented sites in Switzerland and Japan, respectively; we collected topographical indicators at various spatial extents and focused on shared features in the geological descriptions of the two countries. We paired this proxy database with a companion dataset of site amplification factors at 10 frequencies within 0.5–20 Hz, empirically measured at the same Swiss and Japanese stations. We then assessed the robustness of the correlation between individual site-condition indicators and local response by means of statistical analyses; we also compared the proxy-site amplification relations at Swiss versus Japanese sites. Finally, we tested the prediction of site amplification by feeding ensembles of indirect parameters to a neural network (NN) structure. The main results are: (1) indirect indicators show higher correlation with site amplification in the low-frequency range (0.5–3.33 Hz); (2) topographical parameters primarily relate to local response not because of topographical amplification effects but because topographical features correspond to the properties of the subsurface, hence to stratigraphic amplification; (3) large-scale topographical indicators relate to low-frequency response, smaller-scale to higher-frequency response; (4) site amplification versus indirect proxy relations show a more marked regional variability when compared with direct indicators; and (5) the NN-based prediction of site response is the best achieved in the 1.67–5 Hz band, with both geological and topographical proxies provided as input; topographical indicators alone perform better than geological parameters.
Identificación de riesgos operacionales en el transporte tercerizado de productos hortofrutícolas
Authors: Agredo Saenz Alexandra , Vargas Rueda Diana Marcela , Osorio Gómez Juan Carlos
Published: November 2021

Mitigating food losses and wastage in the supply chain is important for increasing incomes, fighting hunger, improving food quality and security in the countries of the world. For this matter, the management of operational risk allows to determinate the necessary actions tending to mitigation or elimination of the risks that affect the performance of the chains. One of the fundamental activities to guarantee the success in the risk management has to do with the identification of the same ones. On the other hand, the participation of third-party logistics companies has increased in supply chains, affecting in several ways the performance of these and creating new risks in the system. The operational risk identification is associated to outsourced transportation activity affecting the performance of a fruits and vegetables supply chain in Valle del Cauca – Colombia.
Factores determinantes en la crisis de las instituciones prestadoras de servicios de salud en Colombia, un acercamiento desde la perspectiva financiera
Authors: Castro Figueroa Andrés Mauricio , Malpica Zapata William Alexander
Published: November 2021

This article presents an analysis of the financial information of the institutions providing health services (IPS) in Colombia, as well as the evolution of specific financial indicators during the years 2015-2019 with the aim of identifying critical factors from the financial perspective that allow demonstrate the effect that the crisis in the sector has had on the finances of these organizations. The information of the entities has been obtained through public access databases administered by the National Superintendency of Health. The results of the study show a deterioration in most of the elements evaluated on the financial performance of the organizations for the period of time studied. There are critical factors that compromise the sustainability of these organizations in the short term, due to this, it is necessary a reviewof the public policies that regulate these organizations, seeking to improve the conditions that ensure a better financial performance of the IPS in the country.
Gestion del conocimiento en el sector hotelero: una revisión de literatura
Authors: García-Méndez Sebastián , Gutierrez Juan Camilo , Garavito Hernandez Youseline
Published: November 2021

This article presents a review of the literature regarding knowledge management, taking into account its importance in organizations, particularly in the hotel tourism sector, as a result of the complexity of the environments of this industry. For this purpose, a theoretical foundation was made, then the types of knowledge are referenced, then the presentation of the models and processes, and finally what is related to the hotel activity. In the same way, a series of conclusions are raised, tending the development of investigations, likewise, the use of temporal planes is required, to promote methodological rigor. The findings of this work indicate that knowledge management is of great importance in the current context, as it contributes to the generation of a sustainable competitive advantage.
Analysis of noise-reduction filter design by computer modelling
Authors: Drach V.E. , Kondrashov P.V. , Savvin M.A.
Published: November 2021

The article describes the principles of evaluating the design disadvantages of a noise-reduction filter. The characteristics of the developed equipment are influenced by many parameters, such as the inhomogeneity of the components used, the parasitic interference introduced by them, and noise induced from structural elements and external sources. At the same time, the search for and elimination of the reasons for the discrepancy between the parameters of the designed products requires more and more expenses during the development stages. That is why the problem of modeling equipment with parameters close to real ones and under conditions different from laboratory ones is urgent. To assess the influence of the above factors in the Qucs 0.0.19 program, a noise suppression filter was simulated, the introduced attenuation of which did not meet the requirements of the design documentation (this problem was identified due to the use of modern measuring equipment at the stage of serial production). A family of curves is constructed that describe the behavior of the circuit for various values of the parameters of the elements. Equivalent circuits were used to assess the influence of parasitic parameters. The effect of noise induced by structural elements was approximated using parallel connected transformers in short circuit mode. The simulation was carried out in the frequency range from 100 Hz to 1 GHz. As a result of the conducted research, it was obtained: taking into account the parasitic parameters of the elements leads to a significant change in the form of the ideal frequency response of the noise suppression filter; the value of the capacitance of the pass capacitor in the considered frequency range does not make a significant contribution to the attenuation introduced by the filter; in the low-frequency region, the magnitude of the inductance of the coils has the greatest influence on the output characteristic of the filter; in the high-frequency region, the radiating properties of structural elements begin to appear, the influence of which on the attenuation introduced by the filter is significant.
New approaches to medical and physical rehabilitation of athletes with professional diseases
Authors: Naumenko E.V. , Fadeev A.V. , Krainyukov E.P. , Krainyukov I.P. , Pyatenko V.V. , Stepanova G.P. , Marchenko L.Yu.
Published: November 2021

The lack of an integrated approach to treatment and rehabilitation in sports medicine can lead to a decrease in professional longevity and, in some cases, disability of athletes. This article demonstrates the effectiveness of a systematic approach to the correction of professional diseases of athletes. Objective. To substantiate the effectiveness of the developed treatment and rehabilitation programs based on an integrated multidisciplinary approach to the correction of specific pathologies. This article analyzes the structure of the professional morbidity of athletes. The authors have demonstrated the effectiveness of the developed rehabilitation programs for athletes with occupational diseases, and showed the high efficiency of a combination of surgical and therapeutic correction of occupational diseases with the subsequent use of rehabilitation measures. The use of the medical rehabilitation programs slowed down the progression of occupational diseases in athletes, or evened out the negative consequences of existing diseases by 87.3%. In addition, the researchers proposed the use of the approach of professional retraining, taking into account the functional capabilities of the body of athletes. The established high therapeutic efficiency of the developed rehabilitation programs for athletes with occupational diseases allows them to be recommended for wide practical use by specialists working in the field of sports medicine.
Implementation of optimal multi-rate cardiac signal processing on a 1967BH028 DSP from “Milandr” design center in order to analyze heart rate variability
Authors: Vityazeva T.A.
Published: November 2021

The analysis of heart rate variability in recent years has become very widespread as a tool for versatile diagnostics of the functional state of the human body. The analysis of heart rate variability is associated with processing procedures characterized by high requirements for the speed of the computational element base. These procedures, however, must be performed in real time in an embedded computing system. The article deals with the problem of reducing the number of computational operations and an implementation of heart rate variability on modern processor elements offered by the domestic industry. The aim of the work is to model the optimal structure of multi-rate signal processing in the analysis of heart rate variability and to implement this structure on a digital signal processor with an estimate of processing time and `memory costs. By modeling, it is shown that the developed optimal structure of multi-rate processing allows getting a reliable processing result while reducing computational costs by several hundred thousand times compared to the implementation at the original sampling frequency. The optimal structure is constructed as a two-stage filtering-decimation structure, followed by passing the signal at a reduced sampling rate through a set of analysis filters. The end-to-end decimation factor is 500. The simulation results allow us to proceed to the implementation on the signal processor. The program codes of the main processing stages, including filtration and filtration decimation, have been developed. It is shown that the processing time with high-quality optimization of program codes can reach 10 million clock cycles, which corresponds to 23 ms and fully satisfies the real-time processing requirement, leaving a large margin for implementing additional more complex analysis algorithms on the same processor. The practical significance of the results is that in addition to the proposed method of reducing computational and memory costs, a prototype of a possible device based on one of the most popular domestic signal processors is obtained.
Data processing using deep learning of the generative-adversarial neural network (GAN)
Authors: Ilichev V.Y. , Chukhraev I.V.
Published: November 2021

The article is devoted to the consideration of one of the areas of application of modern and promising computer technology – machine learning. This direction is based on the creation of models consisting of neural networks and their deep learning. At present, there is a need to generate new, not yet existing, images of objects of different types. Most often, text files or images act as such objects. To achieve a high quality of results, a generation method based on the adversarial work of two neural networks (generator and discriminator) was once worked out. This class of neural network models is distinguished by the complexity of topography, since it is necessary to correctly organize the structure of neural layers in order to achieve maximum accuracy and minimal error. The described program is created using the Python language and special libraries that extend the set of commands for performing additional functions: working with neural networks Keras (main library), integrating with the operating system Os, outputting graphs Matplotlib, working with data arrays Numpy and others. A description is given of the type and features of each neural layer, as well as the use of library connection functions, input of initial data, compilation and training of the obtained model. Next, the implementation of the procedure for outputting the results of evaluating the errors of the generator and discriminator and the accuracy achieved by the model depending on the number of cycles (eras) of its training is considered. Based on the results of the work, conclusions were drawn and recommendations were made for the use and development of the considered methodology for creating and training generative and adversarial neural networks. Studies have demonstrated the procedure for operating with comparatively simple and accessible, but effective means of a universal Python language with the Keras library to create and teach a complex neural network model. In fact, it has been proved that the use of this method allows to achieve high-quality results of machine learning, previously achievable only when using special software systems for working with neural networks.
Algorithm for determining the design of an unbalanced wave channel antenna with a given direction of maximum radiation in the vertical plane
Authors: Andropov A.V. , Kuzmin S.V.
Published: November 2021

An integral part of the communication system with unmanned aerial vehicles is the airborne antenna-feeder system. As a rule, a circular pattern is required in the horizontal plane. However, since omnidirectional antennas have a small gain, they switch to schemes of several directional switchable antennas. It is proposed to use an unbalanced antenna for such systems. Unbalanced antennas have limited substrate dimensions. The maximum gain is achieved not towards the horizon, but at some elevation angle. Proposes a design definition algorithm an unbalanced antenna wave channel with a given direction of maximum radiation. For example, a similar antenna is constructed using the algorithm. An antenna for operation in the frequency range of 2,3…2,7 GHz is taken as the initial data. The dimensions of the antenna elements are obtained from numerical experiments using an optimization module in CAD. A study of the directivity characteristics of an unbalanced wave channel of an antenna with a limited substrate and the dependence of the elevation angle of the maximum of the directivity pattern is carried out. The minimum size of the substrate at which the gain in the direction to the horizon stops growing is revealed. The range of values of the elevation angle of the maximum of the amplitude radiation pattern in the vertical plane is determined.
Low-loss bidirectional buck-boost DC-DC converter
Authors: Nepomnyashchiy O.V. , Sazonov I.E. , Yablonskiy A.P. , Khaidukova V.N.
Published: November 2021

For DC energy systems there is reversible buck/boost pulse converter (RPC) in the classic converter circuit. The maximum efficiency of the RPC without additional mechanisms to reduce the dynamic energy losses in the power semiconductor keys (PSK) during their commutation is about 92%. Improved efficiency is achieved by providing «soft switching» of the transistors RPC, i.e. in zero current/voltage switching. These methods require the introduction of supporting links in the RPC, which have a negative impact on the performance of reversible buck/boost pulse converter. Due to the increase in the number of components, this leads to degradation of mass-size characteristics of the product and decrease in its reliability. New RPC transistors control algorithm RPC provides an opportunity to use transistors at zero voltage without additional elements. Because of the relative novelty of this technical solution, the energy exchange processes in the reactive elements of power semiconductor devices (PSD) are poorly studied. By reason of insufficient studying of power exchange processes in reactive elements of converter, it seems important to study these processes and use the received results for recommendations about reversible buck/boost pulse converter designing. As a result of research it was found out that the recuperation of energy stored in parasitic capacitance of drain-source transistors acting as PSD. At designing of RPC the account of the revealed phenomenon of energy, recovery will allow additionally to raise its efficiency at the expense of decrease in losses of energy on PSK in shutdown state. For this purpose, it is necessary to use transistors with high value of parasitic capacitance of drain-source or include additional capacitors in parallel with PSK.
Adoptive Chimeric Antigen Receptor T Cell (CAR-T) and Treg Cell-Based Immunotherapies: Frontier Therapeutic Aspects in Cancers
Authors: Bahraini Mehran , Fazeli Alieh
Published: November 2021

Based on this point that some cancers do not appropriately respond to conventional therapy, and there is the possibility of relapse, immunotherapy is currently under investigation. Cancer immunotherapies are widely recognized as transformational for several cancers and enable to move to the front-line therapy with few side effects. One of its new branches is treatment with T-cells that have been changed their receptor. The research on these cells is generally according to the design of a receptor against a specific tumor antigen. Also, manipulation of regulatory T-cell (Tregs), as the barriers to proper immune responses in the tumor microenvironment, will promote Tregs-targeted therapeutic opportunities and improve the efficacy of the current cancer treatment, such as radiation and chemotherapy. This review attempts to show novel insights into the roles of Tregs in cancer which can be considered a promising anticancer therapeutic strategy for targeting them and approaches for the generation of tumor antigen-specific T lymphocytes (AST) using chimeric antigen receptors.
Evaluation of the Impact of Rehabilitation Training on the Knowledge and Attitude of Caregivers of COVID-19 Patients in Iran
Authors: Azadvari Mohaddeseh , Emami Razavi Seyede Zahra , Hosseini Maryam , Mayeli Mahsa
Published: November 2021

Applying rehabilitative measures is shown to be influential in relieving the medical complications of the COVID-19 disease. Herein, we aimed to assess the effect of a rehabilitation training class on the knowledge and attitude of the caregivers of the COVID-19 patients. Twenty-three caregivers voluntarily filled the questionnaire before and after attending a training class that evaluated the participants' beliefs about the four types of rehabilitations in COVID-19, including musculoskeletal, respiratory, gastrointestinal, and deep vein thrombosis (DVT) prevention. Significant improvement in the caregiver's attitude about the importance of all four rehabilitation types was detected. Also, the knowledge was increased about the necessity of DVT prevention. The level of knowledge in the caregivers of COVID-19 patients in Iran is not satisfactory, which necessitates proper education to achieve the rehabilitation goals rapidly. In-person caregiver training along with presenting pamphlets is of the most useful methods.
A Case of Pyruvate Carboxylase Deficiency With Longer Survival and Normal Laboratory Findings
Authors: Bayat Reza , Koohmanaee Shahin , Mahdieh Nejat , Kharaee Fatemeh , Shahrokhi Maryam , Hassanzadeh Rad Afagh , Najafi Chakoosari Saber , Dalili Setila , Hoseini Nouri Seyede Azade
Published: November 2021

Pyruvate carboxylase deficiency (PCD) is a rare autosomal recessive defect in a biotin-containing enzyme, Pyruvate carboxylase, which is considered as an enzyme of TCA-cycle regulation, gluconeogenesis, lipogenesis, and biosynthesis of neurotransmitters. Increased lactate to pyruvate ratio and decreased three hydroxybutyrates to acetoacetate are the main biochemical features of PCD. The elevated level of Citrulline, Proline, and Lysine with a short life span has been reported previously. Patients’ survival in almost all cases is below three months. Here, the authors aimed to report a girl with manifestations of Type B of PCD and longer survival (two-year and four-month-old). This patient did not have any changes in amino acid level, which was a unique case of Type B of PCD.
STUDIES OF THERMAL SHOCK RESISTANCE OF AN ANTI-OXIDATION COATING FOR A MULTI-LAYERED CERAMIC COMPOSITE
Authors:   Joint Stock Company «UEC-Aviadvigatel», Goncharov B.E. , Sipatov A.M. ,   Joint Stock Company «UEC-Aviadvigatel», Cherkashneva N.N. ,   Joint Stock Company «UEC-Aviadvigatel», Pleskan A.Yu. ,   Joint Stock Company «UEC-Aviadvigatel», Samokhvalov N.Yu. ,   Joint Stock Company «UEC-Aviadvigatel», Vaganova M.L. ,   Federal State Unitary Enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute», Sorokin O.Yu. ,   Federal State Unitary Enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute», Solntsev St.S. ,   Federal State Unitary Enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute», Evdokimov S.A. ,   Federal State Unitary Enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»
Published: November 2021

The article covers the performance of thermal shock resistance experiments of a ceramic composite with two types of anti-oxidation coatings. A thermal shock burner rig was used to carry out the experiments similar to those expected in a combustor of a turbojet engine. SEM and х-ray diffraction analyses were used to examine the antioxidation coatings. It was deter-mined that the coating based on the refractory compounds possesses high thermal shock resistance when exposed to the fuel gas flow from a burner rig.
A New Era in Multimodal Learning Analytics: Twelve Core Commitments to Ground and Grow MMLA
Authors: Worsley Marcelo , Martinez-Maldonado Roberto , D'Angelo Cynthia
Published: November 2021

Multimodal learning analytics (MMLA) has increasingly been a topic of discussion within the learning analytics community. The Society of Learning Analytics Research is home to the CrossMMLA Special Interest Group and regularly hosts workshops on MMLA during the Learning Analytics Summer Institute (LASI). In this paper, we articulate a set of 12 commitments that we believe are critical for creating effective MMLA innovations. Moreover, as MMLA grows in use, it is important to articulate a set of core commitments that can help guide both MMLA researchers and the broader learning analytics community. The commitments that we describe are deeply rooted in the origins of MMLA and also reflect the ways that MMLA has evolved over the past 10 years. We organize the 12 commitments in terms of (i) data collection, (ii) analysis and inference, and (iii) feedback and data dissemination and argue why these commitments are important for conducting ethical, high-quality MMLA research. Furthermore, in using the language of commitments, we emphasize opportunities for MMLA research to align with established qualitative research methodologies and important concerns from critical studies.
РАЗРАБОТКА И ИССЛЕДОВАНИЕ НОВОГО СПОСОБА ГАЗООЧИСТКИ ОТ ЧАСТИЦ РАЗМЕРОМ МЕНЕЕ 2, 5 МКМ
Authors: Khmelev Vladimir N. , Shalunov Andrey V. , Bochenkov Alexander S. , Nesterov Viktor A.
Published: November 2021

Ссылка для цитирования:  Разработка и исследование нового способа газоочистки от частиц размером менее 2, 5 мкм / В.Н. Хмелев, А.В. Шалунов, А.С. Боченков, В.А. Нестеров // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2021. – Т. 332. – № 10. – С. 127–139.

Актуальность исследования обусловлена отсутствием эффективных методов и средств борьбы с загрязнением атмосферы субмикронными частицами размером менее 2,5 мкм. Применяемое для этих целей ультразвуковое воздействие не позволяет обеспечить степень укрупнения дисперсных частиц, достаточную для их осаждения или улавливания существующим газоочистным оборудованием. Как показывают экспериментальные исследования, даже при максимальном уровне звукового давления (при превышении которого инициируется обратный процесс – диспергирование капель или разрушении агломератов частиц) эффективность ультразвуковой коагуляции оказывается недостаточной, особенно при малой счетной концентрации частиц. Это обуславливает необходимость выявление новых физических эффектов и разработки новых способов воздействия, повышающих эффективность коагуляции тонкодисперсных частиц. Цель: разработка способа для повышения эффективности ультразвуковой коагуляции частиц размером менее 2,5 мкм за счет формирования вихревых акустических течений в тонком воздушном промежутке между излучателем и отражателем и создание устройства для его практической реализации. Результаты. Предложен новый способ и устройство для очистки газов от дисперсных частиц размером менее 2,5 мкм за счет увеличения времени ультразвукового воздействия на каждую частичку и создания зон локального увеличения концентрации субмикронных частиц. Это обеспечивается за счет формирования вихревых потоков между излучающей (в виде изгибно-колеблющегося диска) и отражающей поверхностями. Локальная зона повышенной концентрации частиц формируется в периферийной области вихря за счет дрейфа частиц под действием центробежных сил из центральной области вихря к его периферии. Предложенный способ обеспечивает повышение эффективности с 13 до 50 %, в зависимости от исходной концентрации дисперсных частиц.
The role of the possibilities of the influence of traditional and modern art on the self-presentation of future teachers
Authors: Nebessayeva Zhanar , Akmara Smanova , Kuralay Bekbolatova , Gadilbek Alzhanov , Dzhaybulovna Jartybayeva Zhamila , Erkinkyzy Rsmakhanbetova Shakhrizada , Bektemirovna Kunzhigitova Gulnur
Published: November 2021

Current research has considered the possibilities of the influence of traditional and contemporary art on self-presentation among future teachers at the stage of university professional training in the framework of the educational process and students' activities. The purpose of the article is to determine the effectiveness of the implementation of the complex influence of traditional and contemporary art in pedagogical conditions, as a way of organizing and managing the process of forming a culture of self-presentation among future teachers. The research collected data through a questionnaire and the sample consisted of 216 students. The collected data was analysed using statistical methods such as student t-tests and percentages. The main results are that the developed and implemented author's complex of possibilities for the influence of traditional and contemporary art in pedagogical conditions ensures its successful formation in future teachers at the stage of professional training at the university.

 

Keywords: contemporary art; professional training; self-presentation; traditional art.