bluuebunny/crossref_metadata_2025 huggingface dataset:
The Association between Sports Club Participation, Sports Enjoyment, and Exercise Adherence among Korean College Students
Authors: An Dojin , Kang Soojin , Kim Woojin , Lee Jonghwa
Published: August 2024

OBJECTIVES The purpose of present study was to analyze the differences in sports enjoyment and exercise adherence according to the level of participation in sports clubs among college students, and to identify the correlation and influence between sports enjoyment and exercise adherence in sports clubs.METHODS Data were collected from 150 college students participating in sports clubs, and a nonprobability sampling was used to select the study subjects. The final 140 responses were used for the analysis, excluding 10 that did not complete the questionnaire or were not sincere in their responses. Oneway ANOVA, correlation analysis, and multiple regression analysis were conducted to analyze the data, and the following results were obtained.RESULTS First, there was a partially significant difference between sports enjoyment and exercise adherence according to the level of participation in sports clubs among college students. In terms of the difference by participation frequency, college students who participated in sports clubs more than three times a week had higher perceived competence in the sports enjoyment than those who participated once or twice a week. Club atmosphere was higher among college students who participated three or more times per week than among those who participated twice per week and higher among those who participated once per week than among those who participated twice per week. The practice and benefits of sports enjoyment and the predisposing, enabling, and reinforcing of exercise adherence were higher for students who participated twice and three times a week than for students who participated once a week. In terms of difference by participation period, students who participated for 18 months or less, 24 months or less, and more than 24 months were higher than students who participated for 12 months or less on the perceived competence of the sports enjoyment and the predisposing of exercise adherence. Second, the effects of sports enjoyment on exercise adherence showed that perceived competence, practice and benefits, and club atmosphere of sports enjoyment influenced predisposing of exercise adherence, and perceived competence and club atmosphere influenced enabling of exercise adherence. Finally, wins and competition and club atmosphere of sports enjoyment influenced reinforcing of exercise adherence.CONCLUSIONS We found that there is a significant relationship between sports enjoyment and exercise adherence among college students participating in sports clubs.
Analysis of ESG Management in KOSPI Listed Companies: Focusing on the Relationship Between Environmental and Financial Performance
Authors: Cho Sungil , Kang Inwon ,   Korea Association for International Commerce and Information
Published: August 2024

In recent years, companies have been facing the challenge of adapting to a rapidly changing global economy and complex trading environment, and ESG management has emerged as a strategic alternative for these companies. In particular, the carbon neutrality policy to respond to climate change requires companies to respond to environmental changes and social needs.
This paper focuses on the environmental aspects of ESG management and analyzes the relationship between non-financial and financial performance of KOSPI 50 listed companies. Specifically, through time series analysis of data for the last 10 years, this paper aims to identify the relationship between environmental indicators of ESG management and financial performance and propose a corporate growth model.
Specifically, we categorize the types of corporate growth based on the relevance of environmental and financial data of the surveyed companies and identify the suitability of ESG-type corporate growth. In doing so, we hope to provide more realistic implications for many international trading companies that seek to improve their performance through ESG activities.
Domestic Consumers’ Perceptions of Chinese e-Commerce: A Semantic Network Anlaysis Using Big Data
Authors: Joo Hye-Young , You Byoung-Boo ,   Korea Association for International Commerce and Information
Published: August 2024

In recent times, the phenomenon of cross-border electronic commerce in Korea has presented a range of challenges owing to the swift surge in foreign transactions among local buyers. The primary objective of this research is to elucidate insights through an examination of the attitudes of local consumers towards Aliexpress, a company that has been actively promoting its products in the Korean market and swiftly gaining a significant market share. The research methodology employed involved a comprehensive analysis of big data using text mining techniques, with the data sourced from Naver and Google archives spanning a two-year period from March 2022 to February 2024. A grand total of 102,644 data points were gathered through web scraping and subjected to analytical scrutiny. The analytical approaches utilized in this study encompassed TF-IDF analysis, centrality analysis, and CONCOR analysis, all aimed at scrutinizing the level of recognition among local consumers concerning Aliexpress, followed by a deliberation on the practical ramifications of the findings.
A Study on the Latin American Model Law of Digital Trade Agreement: Focusing on Comparative Analysis with the CPTPP
Authors: Ki Joo-Hye , Kwak Dongchul ,   Korea Association for International Commerce and Information
Published: August 2024

As the COVID-19 pandemic prolongs, many aspects of economic activities in Latin American countries have transitioned to non-face-to-face methods utilizing the internet. This study aims to propose a Latin American standard model for digital trade norms by extracting and comparing 19 regional trade agreements (RTAs) related to e-commerce, concluded among Latin American countries, from the TAPED database, with the e-commerce provisions of the CPTPP. The comparative analysis results show that the key e-commerce provisions of the CPTPP have been adopted in the Latin American RTAs concluded after the CPTPP. Given that Chile, Mexico, and Peru are current members of the CPTPP, this agreement is not unfamiliar to Latin American countries. Therefore, this study proposes using the CPTPP as the basic framework for a Latin American standard digital trade model, with new digital trade norms added to this basic framework.
Value-based management of agricultural enterprises
Authors: Shaytura Sergey , Shaitura Natalya , Bukaeva Irina , Sivchenko Svetlana , Sudarikov Gennadiy , Knyazeva Marina
Published: August 2024

Any business, no matter how large, cannot operate effectively without proper management. Some aspects of cost management have already been studied, but new questions arise that are quite related to the industry specifics of cost formation. The paper considers the tools for managing agricultural enterprises based on the assessment of their value. The meaning of this method is that the value of an agricultural enterprise should increase all the time. To achieve this goal, it is necessary to perform the following actions cyclically. Estimate the current value of an agricultural enterprise. Find growth opportunities for the enterprise and estimate the future value of assets as a result of the restructuring. Potential value will increase through internal improvements and restructuring. If the effect of growth in the value of an agricultural enterprise is significant, then we proceed to restructuring. An example of restructuring may be the sale of non-core assets and the acquisition of new ones that will bring the potential value of an agricultural enterprise. The conditions that limit their use in agricultural production are determined, justifies the choice of methods that are most adapted to the agricultural sector of production and the current Russian accounting and taxation. When evaluating an agricultural enterprise, it is necessary to break down the entire business into its component parts and evaluate each part separately. Those parts of the business that increase its value the least can be restructured. The second feature of the method is to improve the management of an agricultural enterprise. The relationship between the cost of production and the final results of the activities of agricultural production organizations was studied and potential opportunities for improving production efficiency were identified
Forest pathological condition of the forests of the Baikal natural territory
Authors: Baldanova Lena , Titov Alexey
Published: August 2024

In this paper, on the basis of data from the state forest pathological monitoring of forests of the Baikal natural territory (the territory of the Irkutsk region), forest pathological factors that cause the drying out and loss of forests are analyzed. It also provides an analysis of the regulatory framework for the protection and protection of natural ecosystems of the Baikal natural territory, analyzes its effectiveness in carrying out forest protection measures. According to the data of the state forest pathological monitoring, the area of damaged and dead plantations is more than 258 thousand hectares. The main reasons for the unsatisfactory sanitary and forest pathological condition of forests are forest fires of different years ago, the development of foci of dendrophagic insects and forest diseases. The most dangerous for the forest plantations of the Baikal natural territory are the foci of needle-leaf-eating pests, primarily the Siberian silkworm and the unpaired silkworm: the Kachug forestry is a hotbed of the Siberian silkworm with an area of 23.6 thousand hectares; The Olkhonskoye forestry is a hotbed of the unpaired silkworm, with an area of more than 2.5 thousand hectares. In addition, of particular concern is the formation of a focus of a dangerous invasive pest of the polygraph Belopikhtov (Ussuriysk) in the Slyudyansky forestry, the area of the focus of which increased by 11 % in 2022. In the Slyudyansky forestry, the drying of cedar stands continues as a result of their defeat by bacteriosis. The dynamics of the areas of foci of pests and diseases shows a negative trend, however, the organization and conduct of sanitary, recreational, forest protection measures is very difficult, since the damaged areas are located in the ecological zones of the Baikal natural territory. According to forest pathologists, in order to resolve the current situation, it is necessary to amend the regulatory framework governing the environmental management regime in this area.
Building a model of system dynamics of the development strategy of Russian tourism
Authors: Gorozhanina Evgeniya , Bolotov Ivan
Published: August 2024

The article is devoted to the construction of a simulation model, namely a model of the system dynamics of the Russian tourism development strategy. The introduction substantiates the relevance of the research topic, defines the purpose and objectives of the research, and highlights the main criteria that the constructed model must meet. The relevance of the research topic is due to modern realities in the field of tourism, both external and internal. An object of simulation modeling was also highlighted, storage units were designated (containers for agents (tourists) who travel around Russia (Russia) or abroad (Foreign)), flows, parameters (for example, a parameter responsible for the number of direct flights from Moscow to other countries; a parameter responsible for the percentage of people whose visa expires, etc.), variables (including a dynamic variable) and assumptions of the system dynamics model. There is also a parameter responsible for the period of the simulation. To graphically indicate the connections between the parameters, a cognitive model was built; the description of the connections between the model parameters is summarized in a table. The system dynamics model was built in the AnyLogic simulation environment. For user convenience, a panel for changing the values of model parameters is presented. There are also buttons to start and stop the simulation and reset the results. The code for each of the buttons is presented, written in the Java programming language, since the AnyLogic modeling environment allows you to use this particular language to develop simulation models. A number of experiments were carried out on the model, the results of which are summarized in a table for convenience. The values of the accumulators were analyzed for various combinations of parameter values. The simulation results allowed us to conclude that the model is stable and the parameters are logically correct.
Method of analysis of energy transformations when using heat-power coupled systems to increase efficiency of production activities of the penitentiary system
Authors: Titov Dmitry , Zolkin Alexander , Gulyaeva Nadezhda
Published: August 2024

Currently, the issues of diversification of energy resources aimed at changing energy to perform useful work remain relevant. At the same time, thermal engineering devices used for production purposes operate a priori in modes associated with increased wear due to inefficient energy distribution.
The increase in production requirements for the efficiency of heat exchangers is caused by the aim is to reduce the energy component of costs while maintaining the existing technology. The scope of practical application of heat exchangers affects many types of technological processes. Therefore, studies of the operating modes of such devices have the right to a long-term perspective.
For conducting research, a thermal engineering device can be presented in the form of a coupled thermohydraulic system in which there are all types of heat transfer, thermal conductivity through the wall of the device, heat transfer from the wall and convection of the cooler (air or liquid) along the heated wall. Conducting experimental studies of coupled thermohydraulic systems for the most part indicates an increase in entropy changes at selected stages of the thermal cycle. The process of supplying energy to this system in the form of heat is carried out with increased costs, since the heat exchanger itself works with reduced efficiency.
Such studies of the operation of heat exchangers make it possible to identify points of conservation or reduction of energy reserves, entropy growth, determine the time of the energy supply cycle and calculate its required values.
The article reveals the actual issues of identification of thermal power parameters presented in a generalized form using the system state function. The energy transformations in conjugate thermal power systems are described from the perspective of nonequilibrium thermodynamics and the laws of energy entropy.
The author presents examples of analysis of a heat engineering device for efficiency on the example of the production activity of the penal system.
Development of an investment project of a small enterprise for the production of metal doors using the Project Expert 6 Holding program
Authors: Shvaika Olʹga , Shorenko Irina
Published: August 2024

The purpose of the work. The purpose of the work is to develop an investment project for the opening of a small enterprise for the production of metal doors using the Project Expert 6 Holding program on the example of Metal: Doors LLC.
The relevance of the work. The relevance of the chosen research topic is due to the fact that at present stable success in any business can be obtained only by solving the problems of its profitable development and a detailed analysis of information about its condition and prospects, sales segments and competitors. Therefore, when planning and forecasting the activities of an enterprise, it is always necessary to develop a business plan. Any business owner should be aware of the importance of properly developing a business plan as a basis for cooperation with potential investors, banks and other financial intermediaries. In this regard, the authors identified the need to develop a business plan for a small enterprise for the production of metal doors using the analytical system Project Expert 6.0.
The method or methodology of the work. The research is based on a general scientific methodology, which provides for the application of a systematic approach to solving the problems of organizing a small enterprise for the production of metal doors by developing a specific business plan using the analytical system Project Expert 6.0 on the example of a newly created enterprise.
Results. In this work, a business plan of a small enterprise was developed on the example of LLC «Metal: doors» for the production of metal doors. In a highly competitive environment, any aspiring entrepreneur first needs to draw up a business plan for organizing a business, and only after receiving preliminary financial results begin to implement it. When developing a business plan to obtain real results, you can use the analytical system Project Expert 6.0. The business plan developed in this study for the organization of a small enterprise for the production of metal doors using the analytical system Project Expert 6.0 is typical and can be used as a guide to practical actions in organizing any type of business.
The paper considers the method of traditional business planning, designed for analysis and decision-making in uncertain situations based on the modeling of an enterprise for the production of metal doors. The scope of the results. The results of the conducted research can be used in the organization of enterprises for the production of metal doors, as well as for any other types of business.
Conclusions. In general, all of the above will lead to further development of the competitive environment and small business in the Russian Federation.
Modernization of the sorting complex at the waste transfer station «Severnaya» in the city of Khabarovsk
Authors: Mishchenko Olga
Published: August 2024

The relevance of this work is due to the low efficiency of the existing waste management system in Khabarovsk. The article presents the results of the analysis of the volumes of education and handling of production and consumption waste in the Khabarovsk Territory. In the process of analysis, the work revealed shortcomings in the waste management system in Khabarovsk, which include mixed collection of MSW, one operating waste transfer station, lack of sorting of the Severnaya MPS, depreciation of the equipment of the Severnaya MPS due to significant overload, low percentage waste disposal. Khabarovsk currently uses a two-stage MSW removal system without
pre-sorting. The existing waste management system involves reloading and compacting waste at the Severnaya MPS and subsequent disposal of MSW at a licensed landfill in the Lazo municipal district of almost the entire amount of waste generated. Sorting, recycling, and transportation of waste are difficult due to the fact that many types of waste have a structural relationship due to the characteristics of their fractions, and the problem is also complex in composition of consumer waste (used household appliances). As a result of these factors, the above processes become more complicated, or are carried out in violation of the requirements of the law, due to the lack of a methodology regulating the handling of this type of waste. Waste management is an important complex task, the solution of which contributes to the creation of comfortable living conditions for the population. A necessary element in the implementation of local programs to improve waste management systems should be the direct participation of city authorities, local governments, as well as all population groups. In order to improve the MSW management system in Khabarovsk, a scheme was developed for separate waste collection, with subsequent modernization of the sorting complex at the Severnaya MPS.
O papel da educação em ciências sociais na configuração de uma sociedade justa
Authors: Cáceres-Correa Ismael
Published: August 2024

Este artigo reflete sobre o impacto da educação em ciências sociais na sociedade, com base nas teorias de Xavier Zubiri, Ignacio Ellacuría e Paulo Freire. O objetivo é explorar como a consciência da relacionalidade da realidade pode promover uma mudança social significativa. Metodologicamente, realiza-se uma análise teórica das ideias desses autores, destacando a concepção dinâmica da realidade de Zubiri, a práxis constitutiva de Ellacuría e a pedagogia libertadora de Freire. Os achados enfatizam que a educação deve promover uma consciência crítica que permita às pessoas reconhecer e questionar as estruturas sociocomunitárias. A discussão sugere que integrar essas perspectivas na sala de aula pode levar a uma transformação significativa tanto em nível pessoal quanto social, ressaltando a importância de uma educação que informe e transforme ativamente a realidade histórica e social.
Improving Automatic Migraine Classification Performance with Naive Bayes
Authors: Karataş Arzum
Published: August 2024

The expertise of the physician and the patient's ongoing observation are the two primary contributing factors in diagnosing migraines. However, individuals who experience migraines in the early stages frequently visit emergency rooms or different outpatient clinics, such as internal medicine, ophthalmology, and family medicine. Additionally, the type of migraine is frequently misdiagnosed due to the severity of the symptoms being misjudged or because the five-to-ten-minute examination period is insufficient for achieving an accurate diagnosis. Incorrect treatment of this type can have adverse effects on the patient's health. The majority of research in this field has concentrated on the study of brainwaves, leading to the development of complex tests that are only available to a small proportion of the population. However, one study has made progress in automatic migraine classification. The study, which demonstrates 97% classification performance above that of previous studies and produces findings in a timely manner, provides a decision support mechanism that will assist clinicians in the proper classification of migraine type. Given that over 20% of Turkey's population suffers from migraines, our study concentrated on the same issue to enhance classification performance in terms of accuracy and training time. The Naive Bayes model was employed in the study to categorize the various types of migraines, and the performance of the model was evaluated using data from actual migraine sufferers. The classification model utilized exhibited superior classification performance compared to previous studies, with 99% accuracy and precision. Additionally, the model's training time in the same dataset was the shortest when compared to other benchmarked classifier models. The application of the Naive Bayes classifier to the classification of migraines represents a highly effective technique that can facilitate rapid, accurate clinical diagnoses, thereby enabling physicians to provide their patients with precise diagnoses.
Forensic comparison of Soil Samples in Omerli Dam by FTIR and ICP-OES
Authors: Kızıl Soner , Boler İkra Sedef , Atasoy Sevil
Published: August 2024

Soil is a one of the important physical evidence that could be encountered in any objects including car tire, shoes, or clothes. This study presents the comparison of the soils in Ömerli Dam, Istanbul-Türkiye. 35 of soil samples from 7 different regions have been collected around the lake. FTIR and ICP-OES have been utilized for structural analysis and detection of metal contect in soil samples. Moreover, textural analysis, pH, sedimentation, color tests have been systematically investigated. The image of soil samples is also captured under different light of sources by VSC 8000. The outcome shows that discrimination of soil samples could be studied using various techniques including FTIR, textural analysis, metal concentrations and their color. ICP-OES analysis showed that the soil have various elements such as Si, Fe, Mg, Ca, Cu with a different amounts which provide discrimination for soil samples. The natural pH of the samples varied between 6.1 and 8.3 that are from slightly acidic to moderately alkaline character.
Evaluating the Impact of Building Materials on Indoor Air Quality: A Critical Analysis
Authors: Pekdoğan Tuğçe
Published: August 2024

It is known that people generally spend 90% of their time indoors. Therefore, indoor air quality is a major concern for many people. Building materials play an important role in indoor air quality. Therefore, this study evaluates the role of building materials in IAQ by conducting a bibliometric analysis of articles from the Web of Science Core Collection and utilizing VOSviewer software to analyze publications from 2010 to 2023, focusing on the citation, year, country, and keywords co-occurrence. The analysis reveals key trends and gaps in the literature, highlighting the predominance of specific materials and pollutants. It also highlights that variability in building parameters makes attributing pollution sources difficult and underlines the need for context-specific assessments. These findings underscore the critical need to prioritize IAQ in building design and management to ensure safe and healthy indoor environments. This study manifests by methodologically mapping the research landscape on building materials and IAQ, guiding future empirical research.
How do Regeneration status, Vegetation Diversity, Stand Structure, and Carbon Stock vary across Ecological Regions of Nepal?
Authors: Ayer Santosh , Aman Prabhakar  , Kishor Adhikari  , Subrat Poudel  , Sandhya Basnet  , Manisha Timalsina  , Medha Giri  , Prashant Tarami Magar  , Saru Lamichane  , Anija Singh
Published: August 2024

This study compared the regeneration status, vegetation diversity, stand structure, and carbon stock of two community-managed forests located in different ecological regions of Nepal. A total of 61 concentric sample plots were investigated by using systematic random sampling with 1 % sampling intensity. The phytosociological parameters of trees and regeneration density were calculated using standard techniques. The aboveground tree carbon was estimated using a non-destructive method.  Correlation analysis was performed to assess the variation of carbon stock with biomass, stand density, tree diameter at breast height (DBH), tree height, basal area, and seedling density. Janata community forest had higher regeneration than the Hazare community forest, with a bell-shaped distribution of DBH in Janata and an interrupted curve in Hazare community forest. Both forests were dominated by Shorea robusta. Hazare had higher Shannon diversity index, Simpson's index, and evenness index, while Janata community forest had higher carbon stock. The observed differences in the studied parameters between the two community forests can be attributed to the difference in ecological factors such as temperature, rainfall, soil nutrient availability, and management practices. Future studies focusing on investigating the underlying factors driving the observed patterns and relationships, such as the effects of disturbance, climate, and management practices on forest structure and function are also needed. These findings have important implications for forest management and conservation policies, especially in the context of climate change mitigation and biodiversity conservation.
SPECIES RICHNESS AND VARIATION IN THE COMMUNITY COMPOSITION OF AMPHIBIANS AND REPTILES IN FOUR SITES OF THE DAHOMEY GAP IN BENIN, WEST AFRICA
Authors: Luiselli Luca , Segniagbeto Gabriel , Dekawole Jeanne Kafui , Ayoro Joelle Halamoussa , Ketoh Guillaume Koffivi , Sinsin Brice , Dendi Daniele
Published: August 2024

In order to analyze the community composition of herpetofauna in the Dahomey Gap area in West Africa, we studied the amphibians and reptiles of distinct sites in Benin. Our aims were to highlight whether these communities are homogeneous (as can be predicted by the fact that the Dahomey Gap is a relatively homogeneous vegetation zone) or whether there are remarkable site-specific differences. In particular, we tested the hypothesis that there should be significant differences in community composition between savannah and the open forest remnants or gallery forests along the riverine sites, by applying a Visual Encounter Survey protocol. We found that the herpetological species were typically those of the West African savannahs, with no species belonging to another ecosystem different from the Guinean and Sudanian savannahs. Anthropophilic species were also frequently observed. Our study also documented that the community composition may vary considerably in terms of species richness by site within the Dahomey Gap main habitats, whereas the bulk of the communities of both taxa remain the same.
Sabores y sensaciones: análisis de la experiencia gastronómica de los turistas y su relación con el perfil sociodemográfico
Authors: Ramos Ruiz José E. , Aguilar-Rivero Minerva , Castaño-Prieto Lucía , López-Guzmán Tomás
Published: August 2024

Contemporary gastronomy is currently recognized as one of the key factors in destination selection for tourists, playing a fundamental role in shaping the tourism experience. This study focuses on analyzing the gastronomic experience of tourists who consume tapas in Spain. The results are based on fieldwork from which 612 surveys were obtained. Through an Exploratory Factor Analysis (EFA), three experiential dimensions were identified: atmosphere, sensory, and authenticity. Additionally, the study reveals statistically significant differences for each dimension based on certain sociodemographic characteristics of the tourists. The practical application of these results would allow for the development of tourism promotion strategies and the improvement of gastronomic offerings in different tourist destinations.
Project Wars: A Serious Game to Teach Decision Making in Project Execution
Authors: Chua Cecil ,   Missouri University of Science & Technology, Storey Veda , Wallace Linda ,   Georgia State University,   Virginia Tech University
Published: August 2024

Project execution (i.e., the production, delivery, and deployment of an information system project’s outputs) is a difficult concept to teach effectively because of the many real-time decision making variables facing a project manager. This paper introduces Project Wars, a web-based serious game designed to teach the project execution concepts of deferral of gratification, organizational mindfulness, and discipline in the face of adversity. Project Wars serves as both a platform to instill these concepts and as a basis for discussions on other critical concepts. The latter includes project team management and control, project leadership, the relationship between productivity, slack, and overtime, and project coordination. The paper also explains how to use Project Wars to teach project execution in a HyFlex classroom environment by developing a lesson plan around Project Wars. The game has been tested and demonstrated to be effective.
OPERATOR EXTRAPOLATION ALGORITHM FOR VARIATIONAL INEQUALITIES IN HILBERT SPACE
Authors: Kovalenko O. Yu. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Semenov V. V. , Kharkov O. S. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: August 2024

The article considers variational inequalities with operators acting in a Hilbert space. For these problems, variants of the Operator Extrapolation method have been proposed and studied. A sub-linear efficiency estimate for the gap function is proved. The strong convergence of the Operator Extrapolation method for variational inequalities with uniformly monotone operators is proved. The linear rate of convergence of the Operator Extrapolation method for variational inequalities with operators satisfying the generalized strong monotonicity condition is proved. An adaptive version of the algorithm is proposed. Regularized variants of the algorithm are proposed and theorems on their strong convergence are proved.
ALGORITHMIC AND GRAPHICAL TOOLS FOR PRE-PROCESSING OF HOLTER DATA
Authors: Liashko A. V. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Yefremov M. S. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: August 2024

The work is dedicated to exploring methods of detecting cardiovascular diseases using Holter ECG analysis. An overview of the interface and capabilities of the program is conducted, and an analysis of the threshold algorithm for detecting potentially suspicious intervals is performed.
Cultural Sovereignty: The Content of its Legal Definition and Enforcement in Strategic Planning
Authors: Shashkin P. A.
Published: August 2024

The paper provides the author’s vision of implementation of the definition of «cultural sovereignty» in order to counter socio-cultural threats to Russia’s national security and the characteristics of some of its properties. Ensuring cultural sovereignty is considered as a key element of coordinated actions in the field of strategic planning of public authorities and civil society institutions to protect state sovereignty, achieve the goals of strategic administration, protect the foundations of the constitutional system of Russia and axiological foundation of statehood and historically established constitutional identity. In the author’s opinion, the properties of cultural sovereignty are disclosed in the results of state policy that are measurable from the point of view of strategic administration, requiring the implementation of a set of management measures and efforts. The property of cultural sovereignty «protection of the people and the state from destructive ideological and informational impact» should be expressed in the measurable results of coordinated actions of all structures of the State to suppress the destructive impact on culture with the active participation of civil society. «Preservation of the historical memory and identity of the people» as a property of cultural sovereignty requires expression in the results of state policy that are measurable from the point of view of strategic management, including a decrease in the number and activity of transnational «identity communities» in the country that are not complementary to all-Russian civil and cultural identity. «Conducting a national policy in accordance with traditional Russian values» as a property of cultural sovereignty should find its expression in the concrete results of strengthening the existing historically established institutions of public authority in terms of their modernization in order to achieve strategic goals of ensuring national security and development on the basis of the constitutional principle of solidarity, which forms civil unity and self-awareness. The quality of cultural sovereignty of Russia is defined by maintenance of spiritual powers of the state and the people, the main public institutes at the level necessary for formation of sovereign political will and achievement of the goals of strategic management.
In vivo biodegradation rates of domestic membranes for guided tissue regeneration
Authors: Stepanov Alexandr G. , Apresyan Samvel V. , Zakharyan Georgii K. , Bersenev Sergey V.
Published: August 2024

Background: Experimental research is required to provide guidelines for the use of domestic biodegradable membranes.
Aim: To assess the swelling index and biodegradation rate of barrier membranes (non-collagen and collagen) for guided tissue regeneration in vitro, as well as their biocompatibility in vivo.
Materials and Methods: The swelling index of two types of membranes was assessed after 24 h of exposure to phosphate-buffered saline (PBS) at different pH levels (6.50 and 7.37). The spontaneous degradation rate of the two types of membranes was assessed; changes in their weight following exposure to PBS at different pH levels (6.50 and 7.37) were measured at predetermined time points. Moreover, the biocompatibility of two membrane samples following subcutaneous implantation in B/D male mice was assessed.
Results: The swelling index of non-collagen membranes was higher at neutral pH compared to acidic pH: 7.7 for pH 7.37 vs 7.2 for pH 6.50. For collagen membranes, the swelling index was pH-independent. There were no differences in membrane weight loss following exposure to PBS at pH 6.5 during 8 weeks. During the first two weeks, collagen membranes had a higher resorption rate at pH 7.37 than non-collagen membranes. Following subcutaneous implantation of both membranes, histopathological specimens collected two weeks after surgery revealed the formation of foreign body granulomas with well-defined boundaries around the implants. Macrophages, monocytes, single giant cells of foreign bodies, and Pirogov–Langhans giant cells were detected, with the number gradually increasing over time.
Conclusion: Non-collagen membranes had a larger swelling index than collagen membranes, which depended on pH. At pH 7.37, collagen membranes had a higher resorption rate during the first two weeks compared to non-collagen membranes. In vitro weight loss after 8 weeks was 20–30% for both membranes, regardless of pH. Subcutaneous implantation in mice confirmed the biocompatibility of the membranes. The biodegradation rate of non-collagen membranes was higher than that of collagen membranes.
Optimization of ultrasound navigation techniques for brachial plexus block using proximal subclavian access
Authors: Tsvetkov Vasily G. , Lakhin Roman E. , Polezhankin Evgeniy V. , Chartorizhsky Evgeniy V. , Tsygankov Kirill A.
Published: August 2024

BACKGROUND: When performing a brachial plexus block in the proximal subclavian region, the scanning plane is located deeper and posterior to the clavicle midpoint. Data on the angle of the ultrasound probe and visualization of the brachial plexus bundles are limited.
AIM: Our aim was to evaluate visualization and positioning of the neurovascular bundle in the infraclavicular region for proximal brachial plexus block..
MATERIALS AND METHODS: Volunteer patients (добровольцах (n=28, median — 43 years)) at the Military Traumatology and Orthopedics Clinic of the Military Medical Academy, named after S.M. Kirov, were studied. Ultrasound navigation was used to evaluate the neurovascular bundle followed by brachial plexus block.
RESULTS: The study showed that the brachial plexus bundle is best visualized at an average sensor angle of between 90° and the maximum that allows visualization of at least one of the elements of the brachial plexus 64.4° (65.7°, 63°) and amounted to 77.5° (77.9°, 76.5°).
CONCLUSION: The optimal angle for performing a brachial plexus block using the proximal subclavian approach is 77.5°. Optimal visualization of the brachial plexus is possible in the angle range from 64.4° to 90°, which enables selecting the safest trajectory of the needle when performing a blockade in this area, considering the anatomical characteristics of the patient. Further studies are required to compare the sensor angles used in actual clinical practice to the angles obtained in this study.
Potential of modern nonopioid analgesics in the prevention and treatment of pain syndrome in decompressive stabilizing spine surgeries
Authors: Lukonina Tatyana D. , Khoronenko Victoria E. , Abuzarova Guzal R. , Alekseeva Galina S. , Buharov Artem V.
Published: August 2024

BACKGROUND: Secondary (tumor) lesion of the spine in 80% of cases is accompanied by chronic pain syndrome (CPS). A decrease in opioid subsidies in the postoperative period is important not only to prevent side effects, but also in order to create a reserve when providing palliative care for patients with CP, due to the pathology of the skeletal muscle system.
AIM: To optimize postop analgesia for cancer patients with CPS undergoing decompressive-stabilizing spine surgery.
MATERIALS AND METHODS: We included 52 patients aged 32–76 (average age: 59±10 [95% CI: 56–62]) years, 23 (44.2%) men and 29 (55.8%) women, with physical status according to the classification of patients of the American Society of Anesthesiologists I–III, CPS without therapy were included strong opioids for spinal metastases. Patients were randomized according to the type of postop analgesia: tramadol was used in the control group (group K) (n=15, 28.8%), a combination of diclofenac and orphenadrine in group D (n=18, 34.6%), and ibuprofen in group I (n=19, 36.5%). Postoperative pain intensity deduced using the visual analog scale was determined during extubation, transfer to a bed in the intensive care unit, 1 and 3 hours postop, and 21:00 on the day of surgery and 06:00 on day 2. The effect duration of the analgesic under study, the need for anesthesia on the postop day, and satisfaction with Likert anesthesia 1 hour after administration were evaluated.
RESULTS: Significant differences in the average values of pain intensity at rest at 06:00 on postoperative day 2 between groups D (Me=10) and K (Me=20) were obtained. Satisfaction with pain relief according to Likert scale in the groups was rated “excellent” or “good.” The duration of opioid therapy was significantly lower in the nonopioid groups (six postop days in groups I and D versus seven in group K; p=0.013).
CONCLUSIONS: Postop analgesia methods using nonopioid analgesics are effective and possess opioid-sparing potential.
New μ1-opioid receptor agonist for emergency pain relief in outpatient clinic: open observational nonrandomized uncontrolled study
Authors: Voloshin Alexey G. , Avetisova Ksenia N. , Smirnova Natal’ya V.
Published: August 2024

BACKGROUND: High-intensity pain is a common problem in outpatient practice, and adequate examination and interventional treatment may be complicated. An effective, safe, and fast pain relief method should be established.
AIM: To evaluate the efficacy and safety of the use of the analgesic Tafalgin in the outpatient clinic for relief of intense pain due to various causes and compare the efficacy of different Tafalgin dosages.
MATERIALS AND METHODS: Twenty-two patients with high-intensity pain (≥7 points on a numeric rating scale, NRS) were studied. All patients were administered Tafalgin once subcutaneously; pain relief, duration of the analgesic effect, and side effects were observed. Additionally, the differences in the effectiveness and safety of two different doses (i.e., 4 and 7 mg) were analyzed.
RESULTS: Average pain intensity at rest before the injection was 9±2 points according to NRS, and pain intensity in movement was 9±1. After Tafalgin injection, average pain intensity decreased to 3±3 points on NRS (pain intensity at rest and in movement were the same). The initial analgesic effect onset time was 17±9 minutes and average duration of the effect was 202±75 minutes. Adverse events (AE) occurred in 8 of 22 patients (36%); all AEs were mild, did not require any treatment, and regressed spontaneously. Differences in efficacy of two Tafalgin doses were noted: after the injection, pain intensity decreased to 6±3 and 2±2 points in the 4 (p=0.16) and 7 mg (p 0,001) groups, respectively. No difference was found between the two groups in effect onset time, effect duration, and number of AEs.
CONCLUSION: Tafalgin demonstrated a strong analgesic effect in intense pain relief; the 7 mg dose demonstrated a satisfactory result and should be prefer for most patients suffering high-intensity pain. In therapeutic dosages, Tafalgin is a well-tolerated treatment, and good adherence to medication was noted.
Detección 3D en infraestructuras inteligentes basada en imagen monocular
Authors: Borau Bernad Javier , Ramajo Ballester Álvaro , Armingol Moreno José María
Published: August 2024

En los últimos años, los avances en Deep Learning y Visión por Computador han impulsado el desarrollo de algoritmos de detección monocular aplicados a la gestión y seguridad del tráfico urbano, con el objetivo de optimizar la recolección de datos en entornos urbanos para las ciudades inteligentes del futuro. Sin embargo, estos esfuerzos han estado predominantemente enfocados en la extracción de datos desde la perspectiva del vehículo, pasando por alto las ventajas que ofrece el uso de cámaras instaladas en la infraestructura. Este artículo se centra en el estudio de la obtención de datos tridimensionales del tráfico desde esta perspectiva alternativa, aprovechando un punto de vista superior para evitar oclusiones y obtener información más precisa sobre el tamaño y la posición de los vehículos. Así, esta investigación propone un nuevo enfoque metodológico para la integración de sistemas de visión por computador basados en infraestructuras, aplicados a los Sistemas Inteligentes de Transporte.
Rehabilitación médica mediante Robótica (CDPR) y Realidad Virtual
Authors: Garrido Julio , Riveiro Fernández Enrique , Silva Muñiz Diego , Do Olmo Otero Daniel
Published: August 2024

El artículo presenta la investigación que se está realizando en el marco del proyecto europeo VirtualR3 "Virtual Reality in Robotic movements assistance for Rehabilitation". El objetivo es el desarrollo de un prototipo para realizar ejercicios de rehabilitación de miembros inferiores para pacientes con distintos grados de necesidades terapéuticas mediante robótica paralela CDPR junto con Realidad Virtual. El artículo presenta este el marco de investigación del proyecto y se centra en la integración entre el control de movimiento del CDPR y el seguimiento de los movimientos por parte del dispositivo de Realidad Virtual que llevará el paciente (gafas). Se analizan las prestaciones de la integración entre el CDPR como maestro del movimiento y la RV en seguimiento, y el alternativo del dispositivo de RV como maestro y CDPR en seguimiento, que serán empleadas en los distintos modos de funcionamiento del sistema.
Compensación activa de oleaje para la manipulación de cargas submarinas
Authors: Rivera Andrade Josue Roberto , Riveiro E. , Garrido J. , Silva-Muñiz D.
Published: August 2024

Este artículo aborda el problema de la manipulación de carga submarina durante las operaciones en alta mar. El objetivo es mantener la carga a una profundidad constante, compensando el cabeceo causado por las mareas en los barcos y, por consiguiente, en la carga. Se presenta un enfoque práctico que utiliza técnicas clásicas de control industrial para proponer una solución plug-and-play de compensación activa de oleaje (Active Heave Compensation) con un factor de compensación de al menos el 90%. Esta solución es capaz de ajustarse automáticamente a la carga y a las condiciones dinámicas de las operaciones en alta mar. Se ha implementado con dispositivos industriales, logrando un rendimiento que iguala o supera a otras soluciones comerciales.
Diseño de controladores H-infinito para el seguimiento de trayectorias con robots móviles con ruedas
Authors: Núñez Ricardo , Nicolella Armando , Armesto Leopoldo , González Antonio , Sala Antonio
Published: August 2024

En este trabajo se presenta el desarrollo de una estructura de control de dos grados de libertad (feedforward+feedback) para seguimiento de trayectorias en una plataforma robótica TurtleBot3 Waffle Pi en la que se combina linealización por realimentación, control por punto descentrado y control H-infinito (en varias configuraciones). Los resultados demuestran la viabilidad de la propuesta de cara a futuros desarrollos en entornos más complejos.