bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Fir Digital Bandpass Filter with Hamming Window and Hanning Window Method for Fetal Doppler
Authors: Siswono Hartono , Widyastuti Widyastuti , Dovan Yohanes , Nur’ainingsih Dyah
Published: January 2025

Fetal heart rate using Doppler Ultrasound is a standard method to assess fetal health. Examination of the fetal heart with a Doppler device is more convenient for women. Fetal Doppler can accidentally take the mother's heartbeat. A filter is needed to enhance the audibility of fetal heartbeats while suppressing unwanted frequencies and noise. The normal fetal heart rate ranges from 120 to 160 beats per minute, or 2 Hz - 3 Hz. This frequency can be filtered using a bandpass filter. the digital FIR bandpass filter were created using the Hamming and Hanning window methods. The results of the FIR filter with the Hamming and Hanning window, Orde 100 Hanning gave the best frequency bandwidth range which was 1.833 Hz to 3.167 Hz. Orde 20 Hamming and Hanning had the shortest delay +- 2 s and Orde 100 Hamming and Hanning had the longest delay +- 6s. For the noise at 1.6 Hz, Orde 100 Hamming and Orde 100 Hanning the signal level of the signal output is the same as the desired signal level. For the noise at 3.1 Hz, Orde 100 Hamming and Orde 100 Hanning had the signal level of the signal output is almost the same as the desired signal level. At the frequency point of 1.6 Hz, the noise signal at the input has a magnitude response 2533, it is a decrease after passing through the filter to = 0. At the frequency point of 3.1 Hz, the noise signal at the input has a magnitude response 2246, and there is a decrease after passing through the filter to 167.7. From this study, we can choose 100 orde Hanning because it gave the best frequency bandwidth range which was 1.833 Hz to 3.167 Hz, the delay of +- 6s.
Gaussian Based-SMOTE Method for Handling Imbalanced Small Datasets
Authors: Misdram Muhammad , Noersasongko Edi , Purwanto Purwanto , Muljono Muljono , Pamuji Fandi Yulian
Published: January 2025

The problem of dataset imbalance needs special handling, because it often creates obstacles to the classification process. A very important problem in classification is to overcome a decrease in classification performance. There have been many published researches on the topic of overcoming dataset imbalances, but the results are still unsatisfactory. This is proven by the results of the average accuracy increase which is still not significant. There are several common methods that can be used to deal with dataset imbalances. For example, oversampling, undersampling, Synthetic Minority Oversampling Technique (SMOTE), Borderline-SMOTE, Adasyn, Cluster-SMOTE methods. These methods in testing the results of the classification accuracy average are still relatively low. In this research the selected dataset is a medical dataset which is classified as a small dataset of less than 200 records. The proposed method is Gaussian Based-SMOTE which is expected to work in a normal distribution and can determine excess samples for minority classes. The Gaussian Based-SMOTE method is a contribution of this research and can produce better accuracy than the previous research. The way the Gaussian Based-SMOTE method works is to start by determining the random location of synthesis candidates, determining the Gaussian distribution. The results of these two methods are substituted to produce perfect synthetic values. Generated synthetic values are combined with SMOTE sampling of the majority data from the training data, produce balanced data. The result of the balanced data classification trial from the influence of the Gaussian Based SMOTE result in a significant increase in accuracy values of 3% on average.
Design Human Object Detection Yolov4-Tiny Algorithm on ARM Cortex-A72 and A53
Authors: Muwardi Rachmat , Faizin Ahmad , Adi Puput Dani Prasetyo , Rahmatullah Rizky , Wang Yanxi , Yunita Mirna , Mahabror Dendi
Published: January 2025

Currently, many object detection systems still use devices with large sizes, such as using PCs, as supporting devices, for object detection. This makes these devices challenging to use as a security system in public facilities based on human object detection. In contrast, many Mini PCs currently use ARM processors with high specifications. In this research, to detect human objects will use the Mini PC Nanopi M4V2 device that has a speed in processing with the support of CPU Dual-Core Cortex-A72 (up to 2.0 GHz) + Cortex A53 (Up to 2.0 GHz) and 4 Gb DDR4 Ram. In addition, for the human object detection system, the author uses the You Only Look Once (YOLO) method with the YoloV4-Tiny type, With these specifications and methods, the detection rate and FPS score are seen which are the feasibility values for use in detecting human objects. The simulation for human object recognition was carried out using recorded video, simulation obtained a detection rate of 0,9845 or 98% with FPS score of 3.81-5.55.  These results are the best when compared with the YOLOV4 and YOLOV5 models. With these results, it can be applied in various human detection applications and of course robustness testing is needed.
ARTISTIC RESIDENCIES IN CONTEXT: CULTURAL DYNAMICS
Authors: Tahlina Yuliia , Ivanova Nataliia
Published: January 2025

This paper explores the multifaceted nature and evolving roles of artist residencies, emphasizing their significance in fostering creative development and social engagement. Over the past two decades, artist residencies have diversified, offering a variety of formats, from rural retreats to urban institutional residencies. These programs provide artists withdedicated time and space, away from their usual environments, enabling deeper creative engagement and innovation. The research underscores the increasing emphasis on community involvement and social activism within residencies, highlighting how these programs facilitate meaningful interactions between artists and local communities, thereby promoting social change and community development. Interdisciplinary methodologies, drawing from social psychology, business management, and arts education, enrich the understanding of residencies' complexities. These approaches ensure that residency programs are more responsive to artists' needs and contribute positively to their artistic growth. Studies such as The Year of the Artist demonstrate how residencies can shift public perceptions of artists and enhance cultural diversity. Furthermore, the global nature of modern residencies encourages cross-cultural interactions, challenging traditional cultural boundaries and enriching artists' work. The importance of ensuringdiverse and equitable access to residencies is emphasized, fostering an inclusive creative environment. In conflict zones, such as Ukraine, residencies also serve as sanctuaries, offering safety and a platform for artists to document and communicate theirexperiences, bridging local and global understandings.The authors have significantly expanded the concept of artist residencies by building on the idea of residencies as a "gift of time and space." They propose innovative concepts of residencies as giftsof voice, interaction, multidisciplinarity, and security. These contributions highlight the evolving nature of residencies. The perspective of artist residencies is indicated in the conclusions as promising, with significant potential for artistic, social, and cultural impact. As globalization continues, the authors forecast that residencies will foster further development of intercultural dialogue and challenge conventional cultural norms
FEATURES OF THE ARTISTIC LANGUAGE OF PHOTOGRAPHY IN THE CONTEXT OF INTERSPECIFIC TRANSFORMATIONS: PHOTO-READY-MADE AND PHOTOCOLLAGE (ON THE EXAMPLE OF FOREIGN PROJECTS OF THE VENICE BIENNALE 2010-2020)
Authors: Tarasov Volodymyr , Markhaichuk Nataliia
Published: January 2025

The article is devoted to the problem of the artistic language of photography, which is actively transforming in the direction of new types and genres of art. The authors examine the projects of the Venice Biennale 2010s - 2020s by I. Makhami, L. Kita, E. Kotatkova, A. Crosby, V. Mutu, M. Zukerman-Hartung, J. Stezakera, T. Michie that use photography as the main component of artistic expression in works and projects.

The article uses the example of the analysis of specific projects and individual works of art to show the unique property of photography to represent one's own species identity, in which the peculiarities of the artistic language play a key role. There is practically no kind, type or form of art that has the ability to "undo" the characteristic visuality of a photograph. According to the authors, this is the key to a wide representation of photographic means of expression in various practices and forms of modern art, and in a broader sense, modern culture.

The article shows that collage, ready-made, installation, street art and other types of art representation have their own methods of addressing the viewer and rely on the appropriate mediation technique. However, none of them is able to visually "destroy" the photograph, which remains in a characteristic type of representation even within the external artistic shell (for example, a photo collage or a photograph in an installation). Such a feature is determined by the authors as a key characteristic of the artistic imagery of photography, which, in turn, determines the nature of the artistic language.

Studies of the ready-made as an artistic technique combined with photographic practices allow us to see the extraordinary flexibility of photography as a universally manipulative mode of representation. Instead, as the analysis of the Venice Biennale projects shows, photocollage practices return photography to its natural state of manipulation of reality, where the photo has an almost monopoly on representation.

The authors emphasize that the artistic arena of the Venice Biennale demonstrates extremely important problems of the phenomenology of photography. The subjectivity of the watershed between the nature of the photo to act on its own behalf and at the same time on behalf of the representative has an almost limitless manipulative potential that gives photography new opportunities to conquer narrative spaces. At the end of the 20th - the beginning of the 21st century, photography is already integrated into all major social phenomena, which will certainly require further interpretation and generalization.
ON THE USAGE OF THE DIPTYCH IN THE ORTHODOX CHURCH. THE CORPORATIST DIMENSION OF REPRESENTATION
Authors: Bakirov Denys
Published: January 2025

The aim of this article is to clarify the connection between intercessory prayer and representation. The hypothesis is that intercessory prayer is the first step toward representation because intercession allows a doer of prayer to bring another person into the centre of one’s life. The argument runs as follows. I observe that St. Paul’s prayers are the prayers of eucharistic intercession: he thanks God for his beloved ones. Then I observe that St. James sees mutual confession of sins and mutual intercession as the ground of Christian “healing”. Then I observe that Dietrich Bonhoeffer conceptualises the Church as constituted by the practice of intercession. Lastly, I observe that Rowan Williams frames intercession as a discipline of bringing another person into the presence of God. Since a doer of prayer brings another person into the presence of God, she thus makes another person the centre of her life. And from this centre, she cannot help but make this person present to others, to “bear witness” to this person in her words and deeds. But intercession succeeds in bringing another person into the centre of a doer of prayer’s life because the “token” of intercession is the “name”, that part of human beings which is also a part of language, a “word” that can be exchanged and uttered. To make the other present and to become present in the other is to become present in the “names” we have already exchanged – to make another person’s “name” the centre of one’s life and to become present in one’s “name” which is presented to others. To make another thus present is to continually call upon another’s “name” – to approach the other not as a thing under our control but as a person who is to act upon us, who is to become present in and through us. To make nothing besides the self-disclosed “name”, trust in our self-presentations, the medium of our communication. What used to be called “hallowing the name”. Making another present with the entirety of one’s conduct, the life of a human person in the new medium of another’s body, the eucharistic act of taking another’s “body” into one’s own body, begins with the intercessory act of taking another’s “name” into one’s speech. Thus, representation starts with intercession, the discipline of keeping each other in prayers. In the final section, I examine how the so-called pomyannik can be a valuable asset for those who aspire to practice intercession as part of a prayer routine
THE HISTORY OF JEALOUSY: HISTORIOGRAPHICAL REVIEW
Authors: Zheronkin Anton
Published: January 2025

Interdisciplinary research in the field of the history of emotions is rapidly gaining popularity in the world, which is not surprising for the "risk society", especially against the background of epidemics and wars – irrational life factors begin to play a greater role. The relevance of the study of "emotional communities" of the past is due to the need to learn more about these irrational factors of history, as well as the internal hermeneutic need of history and philosophy to better understand the hidden layers of the meaning of societies of past centuries. However, in the Ukrainian scientific environment, there are almost no studies on the formation and development of the history of emotions. In the current study, the historiography of the study of envy by historians of emotions is considered. The article determined the connection between the development of the history of emotions in general and, separately, the history of envy. Three stages of the study of the mentioned problems were distinguished: the stage before the formation of the history of emotions, the stage of the first essays and the stage of the flowering of the history of envy, which is characterized by the use of a wide modern methodological toolkit of psychology and psychoanalysis, sociology and anthropology, philosophy, cultural studies, political science, etc. Considered concepts from works classic for the history of envy by P. Walcott, D. Constant, N. K. Rutter, K. Gill, E. M. Sanders, and many others. Researchers conclude that the essence of the emotion of envy remains monolithic, no matter which era we consider, but its nuances and associative connections vary greatly from era to era, as does the social meaning of this emotion. Considered meaning of the terms "transmutation" and "distortion" in the history of emotions proposed by E. M. Sanders. It was determined that most of the available studies on the history of envy were devoted to the emotional communities of Ancient Greece. Also reviewed are existing studies on the history of envy in the Middle Ages, early modern times, and the Byzantine Empire. It was determined that there are also studies of emotions related to the emotion of envy - among them jealousy, hatred and others. The results of the study will be useful for further research into the historical dimension of the phenomenon of envy, the methodology and historiography of the history of emotions, as well as the philosophy and sociology of emotions.
Application Of Audio-Visual Media To Passing Ability In Extracurricular Futsal
Authors: Gunawan Agus , Saepudin Nunuh , Gaol Areslon Lumban , Sudrazat Adang
Published: January 2025

Basic techniques in futsal games in the form of passing movements, dribbling, shooting, heading, control, all of these movements were very influential in futsal games. The purpose of this study was to find out whether there was an influence of the application of audio-visual learning media on the passing technique of futsal sports. The sample in this study is all extracurricular participants in the SMP Negeri 2 Jatiwangi futsal sport branch, totally 30 students. The results of this study indicate that the application of audiovisual media to the ability of SMP Negeri 2 Jatiwangi extracurricular passing has increased with the resulting t count of 11,803 and the t-table of 1,699. The result is that the value of t-count t-table so that the post-test can be concluded that there is a significant difference between the results of the pre-test and the results of the post-test so that the hypothesis can be accepted. and the application of audiovisual media to the ability of SMP Negeri 2 Jatiwangi extracurricular passing experienced an increase.
Implementation of Differentiated Learning to Improve The Results of Football Shooting Techniques In The Learning of Physical and Sports Courses of Grade X Flores Students of State High School 1 Palopo
Authors: Astaman Muhammad Ramadhan , Fahrizal Fahrizal , Hudain Muh. Adnan , Ramli Ramli , Juhanis Juhanis
Published: January 2025

The purpose of this study was to determine the ability of students' football shooting techniques and how to improve the material of basic football techniques by using differentiated learning. This type of research is Classroom Action Research. The instruments used are 1) a Learning style test, and 2) a Football shooting technique test. The research design uses the Kemmis & McTaggart model. The implementation of the action includes four steps, namely: 1) Planning, 2) Implementation of Action (Action), 3) Observation, and 4) Reflection. Based on the results of research at the pre-cycle stage, the results of the learning style of students with an average of students with a kinesthetic learning style of 66.3 or 24 students, a visual learning style with a percentage of 25% or 9 students, and an auditory learning style with a percentage of 8.3% or 3 students. The percentage of the results of the assessment of football shooting techniques cycle 1 with an average student score of 74 with 42% completeness. Then in cycle II, it increased with an average student score of 86%. So it can be concluded that the application of differentiated learning can improve the results of students' football shooting techniques.
A Survey Of Facilities and Infrastructure For Physical Education Sports and Health At Junior High Schools In Rambah Samo Sub-District, Rokan Hulu District
Authors: Kaputri Devya Ramela , Putra Muarif Arhas , Manurizal Lolia
Published: January 2025

The purpose of this study was to determine how much the availability of Physical Education Sports and Health Facilities and Infrastructure in State Junior High Schools in Rambah Samo District, Rokan Hulu Regency. The method used in this research is the quantitative method. This research was conducted at State Junior High Schools in Rambah Samo District, Rokan Hulu Regency. Data collection is done using observation and documentation. The type of data analysis uses descriptive analysis techniques which are then interpreted descriptive analysis in this study to determine the completeness of physical education facilities and infrastructure for sports and health in State Junior High Schools in Rambah Samo District Rokan Hulu Regency. The results of this study indicate that of the 7 public junior high schools in Rambah Samo District, there is one school that has more PJOK facilities and infrastructure than other schools so the school is in the Excellent category with a percentage of 14.3%. Furthermore, 3 junior high schools are in the good category with a percentage of 42.9%, there are 2 junior high schools in the medium category with a percentage of 28.5% and 1 junior high school in the poor category with a percentage of 14.3%.
Increasing VO2 Max through Circuit Training Training for Futsal Players at SMP Frater Makassar
Authors: Palamba Fransiskus Hengky , Sahabuddin Sahabuddin , Ishak Muhammad , Hasmyati Hasmyati , Hudain Muh. Adnan
Published: January 2025

The research objectives are to examine (1) whether there is VO2 Max before and after being given the circuit training intervention to futsal players at SMP Frater Makassar, (2) whether there is an influence of circuit training to increase VO2 Max for futsal players at SMP Frater Makassar. In this research, the researcher applied an experimental method, namely research that is always conducted to examine the influence of a treatment that has been given within a certain time. The research population was 21 members of futsal players at SMP Frater Makassar, so the researcher took a sample of 21 players with the criteria who were actively practising in the futsal team at SMP Frater Makassar. The results of the research reveal that there are differences in athletes' VO2 Max skills before being given circuit training intervention. The result of the descriptive analysis indicates that there is a significant increase in the VO2 Max value in futsal athletes at SMP Frater Makassar after implementing the circuit training program. Substantially different pretest and posttest scores indicate the effectiveness of the training program implemented. In the pretest, the athletes' VO2 Max value ranged from 23.2 to 38.2 points, with an average of 31.129 points and a standard deviation of 4.4029. After the circuit training program, the VO2 Max value increases to range between 28.7 to 48.0 points with an average of 38.976 points and a standard deviation of 6.4134. The increase in the average score from 31.129 to 38.976 points shows a significant increase in the athlete's aerobic capacity.
Інформаційно-комунікаційні технології як системні інструменти стратегії відбудови інфраструктури України в умовах євроінтеграції
Authors: Комеліна Ольга , Логвиненко Ліліана
Published: January 2025

У статті досліджено стратегічну роль інформаційно-комунікаційних технологій (ІКТ) як системного інструменту стратегії відбудови інфраструктури України в умовах євроінтеграції. Визначено, що ІКТ є ключовим елементом для налагодження ефективної координації, успішного управління ресурсами та прискорення цифровізації у різних секторах економіки. Проаналізовано виклики, пов’язані з кібербезпекою, обмеженим доступом до Інтернету, недостатньою цифровою грамотністю населення та недостатніми інвестиціями в дану сферу. Досліджено європейський досвід цифрової трансформації та проведено його порівняння з українським вектором розвитку інформаційно-комунікаційних технологій, акцентовано увагу на необхідності розбудови цифрових платформ, що об’єднують державні органи, громадян і бізнес. Визначено перспективи подальшого впровадження ІКТ для сталого розвитку та післявоєнної відбудови інфраструктури.
Практики сталого розвитку туризму у регіональному вимірі
Authors: Мельник Ірина , Антоненко Ірина , Вогулкіна Дар’я
Published: January 2025

Підкреслено ключову роль розвитку туризму на засадах сталості та виділено екологічну складову як невід’ємну частину сталого туризму. Вивчено успішні практики сталого розвитку на прикладі природоохоронних територій, міст, регіонів, країн Європейського Союзу. Встановлено напрями реалізації практик (проєктів) сталого розвитку туризму: охорона природи, управління сталим туризмом, залучення місцевої громади, співпраця з іншими громадами, розвиток місць та доступність, стале управління енергією та ресурсами, цифровізація, боротьба та адаптація до змін клімату. Визначено, що в сучасному суспільстві впровадження нових ініціатив в туризмі потребує комплексного та системного підходу із залученням різних груп стейкхолдерів, особливо резидентів регіону, адже саме резиденти відчувають негативний вплив овертуризму. Досліджено втрати сфери туризму від війни в Україні. Підкреслено, що навіть в умовах війни Україна має потенціал для реалізації європейського досвіду з розвитку сталого туризму.
Оцінка потенціалу вторинного ресурсовикористання твердих побутових відходів територіальних громад
Authors: Шкуратов Олексій , Самойлов Олександр
Published: January 2025

У статті запропоновано критерії потенціалу вторинного ресурсовикористання твердих побутових відходів територіальних громад. Розроблено алгоритм оцінки привабливості територіальних громад для вторинного ресурсовикористання твердих побутових відходів. Запропоновано методичний підхід до оцінки потенціалу вторинного ресурсовикористання твердих побутових відходів територіальних громад, який передбачає врахування окрім ресурсної складової потенціалу, а також інфраструктурну складову, що дає змогу повноцінно забезпечити освоєння відходів для корисних цілей. На основі результатів розрахунку інтегрального індексу рівня потенціалу вторинного ресурсовикористання твердих побутових відходів територіальних громад за запропонованим методичним підходом можливо оцінити об’єкт відповідно до запропонованої класифікації.
Foreign economic activity of Ukraine in the field of organic production during the war
Authors: Chychkalo-Kondratska Iryna , Levchenko Iryna , Sharyi Ivan
Published: January 2025

The article examines the latest trends in the dynamics of changes in the foreign economic activity of organic producers, taking into account the impact of military operations on the territory of Ukraine, and also identifies the main importers of Ukrainian organic products in 2022, including such countries as: Austria, Great Britain, Italy, Lithuania, Poland , the Netherlands, Germany, the USA, Switzerland and the Czech Republic. In addition, the work examines the dynamics of the export of organic products from Ukraine to exporting countries for 2022-2024. and structured according to the main types of products. International projects on the development of organic production and circulation of organic products in Ukraine were considered. With the support of the Ministry of Agrarian Policy and in cooperation with participants of the organic sector and international development partners, various activities are taking place to promote the development of the organic market in Ukraine. Organic production in Ukraine demonstrated resistance to the challenges of war. It was established that the export of organic products from Ukraine is growing, and the import is gradually recovering. In the first 5 months of 2024, the export of organic products from Ukraine amounted to 105,000 tons worth 96 million US dollars. This is 12% more in volume and 8% more in value compared to the same period in 2023. Such data indicate that Ukraine is maintaining the dynamics of growth in the export of organic products. It is expected that by the end of 2024, the export of organic products from Ukraine will reach 300,000 tons worth 264 million US dollars. The obtained results are of significant practical importance, as they allow: to develop strategies and recommendations for increasing the efficiency of foreign economic activities of producers of organic products; to determine the main directions of support and development of the agro-industrial sector in the conditions of war; to increase the competitiveness of Ukrainian organic products on the world market; ensure the stability and growth of exports, which will contribute to the economic development of the country as a whole.
Індекс узурпації влади як спосіб підвищення правосвідомості громадян
Authors: Осіпов Андрій , Бутенко Тетяна
Published: January 2025

Місцеве самоврядування в Україні здійснюється на принципах: народовладдя, законності, гласності, колегіальності, поєднання місцевих і державних інтересів, виборності, правової, організаційної та матеріально-фінансової самостійності в межах повноважень, визначених цим та іншими законами, підзвітності та відповідальності перед територіальними громадами їх органів та посадових осіб, державної підтримки та гарантії місцевого самоврядування, судового захисту прав місцевого самоврядування. У статті розглянуті питання підвищення правосвідомості громадян та розвитку демократичних інститутів в Україні, зокрема в місцевих радах. Автором проаналізовано стан національного законодавства, правозастосування та висловлено конкретні заходи щодо подолання проблемних питань. Окремою темою постає питання узурпації влади як протиправного процесу, що руйнує основи державності. Визначено поняття місцева влада ті її повноваження. Вивчено механізм стримування і противаг місцевої ради. Розглянуто влада мера міста. Розкрито поняття «узурпація влади». Автори пропонують дієві механізми, що допомагають усвідомити на буденному рівні стан проблем щодо концентрації влади в громадах. Демократія є загальнодержавним процесом, що перебуває у постійному розвитку. Дієвість демократичних процедур на місцевому рівні (у територіальних громадах) є не доповненням до загально прийнятого розуміння демократії як способу організації центральної влади, а є важливою складовою, невід’ємною частиною державного устрою. У державах розвиненої демократії механізми стримування і противаг у місцевих радах є базовим (основним) рівнем побудови державних інституцій. Це фундамент, на якому розміщено центральні органи влади. Місцева демократія – це прикордонний бастіон забезпечення прав людини і громадянина. Темою статті є підвищення рівня правосвідомості громадян на місцевому рівні, усвідомлення сутності, правова і політична просвіта мешканців конкретних територіальних громад.
Ефективний підхід в управлінні проєктами у неприбутковому секторі через краудфандинг
Authors: Горват Тетяна , Митровка Євген
Published: January 2025

Статтю присвячено дослідженню краудфандингу як інноваційного інструменту управління проєктами неприбуткових організацій. З’ясовано, що краудфандинг є ефективним механізмом фінансування, який дозволяє мобілізувати ресурси через онлайн-платформи за допомогою масових пожертвувань, сприяючи при цьому зниженню залежності неприбуткових організацій від традиційних джерел фінансування. Висвітлено ключові етапи реалізації краудфандингових проєктів, слідування яким дозволить забезпечити успішне залучення фінансування, ефективну взаємодію та сталих взаємин з донорами, а також подальшу оптимізацію ресурсів для досягнення поставлених цілей. Окреслено принципи, дотримання яких є важливим для успішного проведення краудфандингових кампаній. Проаналізовано вплив краудфандингу на розвиток неприбуткових організацій в умовах обмежених ресурсів і нестабільного фінансування. Акцентовано на поступово зростаючій популярності краудфандингу в Україні та необхідності подальшого розвитку.
The conditions and factors of negative consequences of reconstruction -thermal modernization of buildings
Authors: Sokolenko Valerii , Holodnov Oleksandr , Sokolenko Konstyantin , Filatiev Myhailo
Published: January 2025

The negative consequences analysis of public buildings thermal modernization for cases of work stoppage has been carried out. The negative consequences arise for the environment and the facility residents. Organizational and construction mistakes have a long complex character and cannot be corrected. The problem from the technical side turns into an administrative process. The task is to propose organizational and technological measures that would make such cases impossible in the future. It is proposed to carry out work by an integrated method, to complete facade work within a certain section of the wall. Advance financing should be tightly linked to the project sequence of work
Flexural strength of span steel-reinforced concrete truss composite structures
Authors: Galinska Tatiana , Ovsii Dmytro , Ovsii Oleksandra
Published: January 2025

The scientific article proposes a method for calculating the bending strength of steel-reinforced concrete (SRC) composite span truss structures. This method allows calculating the flexural strength of the calculated sections of steel-reinforced concrete truss structures, taking into account their stress-strain state at the time of maximum load-bearing capacity or failure. The analysis of experimental and theoretical values of flexural SRC truss beam strength showed their adequate convergence, which allows the application of the calculation method in practice design SRC  span truss structures and members.
Aspects of calculation of resistance vapor penetration of enclosing structures
Authors: Yurin Oleg , Mahas Nataliia , Zyhun Alina , Musiienko Olha
Published: January 2025

When determining the resistance to vapor penetration of the vapor barrier layer which is based on the zero balance of moisture accumulation per year and the value of the allowable increase in moisture content of the material during the period of moisture accumulation. The temperature and relative humidity of the outside air for the period of the three coldest months of the heating period or the period with average monthly negative temperatures are usually used in the calculations. Although, the duration of the moisture accumulation period may not coincide with this period, and the value of the resistance to vapor penetration of the vapor insulation in the enclosing structures may not be determined correctly. The clarification of the calculation methodology was suggested. It is necessary to determine the months, when moisture accumulation occurs in the insulation of the enclosing structure, after determining the average temperature and relative humidity of the outside air during these months and calculate the resistance to vapor penetration of the vapor insulation layer.
«Green roofs» - historical experience and modern requirements
Authors: Filonenko Olena , Avramenko Yurii , Kidenko Vitalii
Published: January 2025

The article considers the historical experience of creating "green roofs", as well as the requirements and conditions under which such roofs are currently designed. Historical examples and existing modern world objects show the expediency of creating and using green roofs of houses in Ukraine, which will significantly enrich the "fifth facade" of buildings and improve the overall appearance of cities. The lack of regulatory framework for the design of "green roofs", as well as some types of roofing technology problems that may arise during the operation of such roofs and the consequences that they have - environmental, economic, social, and technical. Determining the design conditions and the feasibility of using "green roofs" was chosen a structural scheme of combined coverage, which has all the necessary structural elements. It has been shown that the energy efficiency of this type of coating is provided. Determination of heat transfer resistance was carried out according to all regulatory requirements of SBC B.2.6 - 31: 2006. Constructions of houses and buildings, thermal insulation of buildings. The structural component of the designed "green roof" and the sequence of arrangement of some structural layers of this type of coating are considered. The efficiency and expediency of installation of "green" coatings on residential buildings, as well as the standard service life and warranty period of maintenance-free service of this coating, subject to regulatory requirements and operating conditions.
Determination of optimal variant for insulation of the attic floor of the educational building
Authors: Yurin Oleg , Zyhun Alina , Kliepko Anastasiia , Qiniso Mahlinza
Published: January 2025

The analysis of heat-protective properties of the existing attic floor of the educational building of National University «Yuri Kondratyuk Poltava Polytechnic» showed their non-compliance with regulatory requirements. The required thickness of the insulation in the attic floor was determined without taking into account the heat-conducting inclusions. Overlapping areas with heat-conducting inclusions reduce the reduced heat transfer resistance. In the attic floor, these are the areas where the floor adjoins the inner and outer walls. It is possible to increase the reduced heat transfer resistance due to additional insulation of external and internal walls within the cold attic. The study determined the optimal length of additional insulation for eight different options. To determine the optimal value, options for additional insulation of external and internal walls within the attic with a simultaneous reduction in the thickness of the insulation on the attic floor were considered.
Load Calculation of the Load-carrying Structure of a Tank Car in Oper-ating Modes
Authors: Fomin Oleksij , Lovska Alyona
Published: January 2025

The article determines dynamic load and strength of the load-carrying structure of a tank car with elastic-friction connections in the boiler bearings and between boiler bearings and the boiler bearer. It was established that the use of elastic-friction connections allows to reduce the dynamic load on the tank car by almost 36% in comparison with the prototype. The results of stress calculation showed that the maximum equivalent stresses in the load-carrying structure of a tank car occur in the interaction area of the center sill with the draw-bar and do not exceed the allowable values. The conducted research will allow to increase the operational efficiency of tank cars by reduction of operating costs, and will also promote the creation of their innovative designs.
Moisture protection of structures adjacent to the ground in historic buildings
Authors: Semko Oleksandr , Filonenko Olena , Yurin Oleg , Mahas Nataliia , Rudenko Viktor
Published: January 2025

Vertical and horizontal waterproofing of such underground structures has either been absent since the time of construction, or has already lost its operational characteristics. Moisture from the soil rises through the capillaries of the brickwork, which leads to the destruction of the brick and the finishing layer, the appearance of fungi and mold on the surfaces. Constant wetting of structures bordering the ground leads to a decrease in thermal properties, wear of building structures and a decrease in the standard service life of houses. In most cases, the development of restoration measures involves antiseptic treatment and replacement of wall surface finishes. Such activities carried out repair work in the building of the lyceum in Poltava. The paper emphasizes the introduction of comprehensive measures to restore vertical and horizontal waterproofing on the example of a real object of a gymnasium building in the Poltava region. The damage to the enclosing structures of the basement floor of the gymnasium building and the reasons for their occurrence were analyzed. Measures are proposed to ensure further trouble-free operation of structures adjacent to the ground.
The results of modeling the strain state of soil base reinforced by soil-cement elements under strip foundations of the building
Authors: Vynnykov Yuriy , Razdui Roman
Published: January 2025

The results of complex experimental and theoretical researches of the deformed state of the system "soil-in-situ – soil-cement base – strip foundation – brick building" with layers of weak clay soils are given. By comparing the data of finite element method (FEM) modeling in a three-dimension task using an elastic-plastic soil model of the deformed state of the natural (with layers of weak clay deposits) and reinforced with vertical soil-cement elements (SCE) base of strip foundations of the five-section 9-10-story building, as well as the results of long-term (over 10 years) geodetic observations of this real object proved the correctness of using embedded beam pile elements to simulate SCE. The effectiveness of the SCE reinforcement method for improving soil bases with a low deformation modulus has been confirmed.
Formation of polyfunctional photocatalytically active layered oxide materials using coordination nitrates REE and alkali metal as precursors
Authors: Dryuchko Оleksandr , Bunyakina Natalia , Shefer Оleksandr , Laktionov Оleksandr , Halai Vasyl
Published: January 2025

The information on alkaline coordination nitrates of rare earth elements of the cerium subgroup - precursors of promising modern multifunctional materials - on the conditions of their formation and existence, the nature of chemical bonding, composition, structure, shape of Ln coordination polyhedra, type of ligand coordination, existence of isotype series is generalized. on stoichiometry of structure, structure, the found out characteristic properties. The obtained data are the basis for detection, identification, control of the phase state of processing objects in the preparatory stages in the formation of nanostructured oxide composite systems of lanthanides and transition elements of special purpose, with catalytic and photocatalytic activity, self-cleaning coating with hydrophilic properties; development of various combined methods of their activation
Reinforced concrete section analysis based on design strength of reinforced concrete
Authors: Pavlikov Andrii , Harkava Olha , Kelvis Atembemoh
Published: January 2025

У роботі представлена спрощена деформаційна модель для розрахунку залізобетонних конструкцій, в якій залізобетон розглядається як композитний матеріал, утворений з арматури та бетону. Модель реалізована із використанням поняття розрахункової міцності залізобетону. Це дозволяє звести розрахунок міцності залізобетонних елементів до методики розрахунків, запровадженої в класичному «опорі матеріалів», що сприяє значному спрощенню та прискоренню процесу проектування конструкцій в цілому. Основною перевагою методу розрахунку міцності з використанням поняття опору залізобетону є те, що він залишається незмінним при зміні діаграм напруження-деформації арматури та бетону, введенні нової інформації про властивості цих матеріалів, технологічні параметри, навантаження тощо. У запропонованому методі розрахунку змінюється лише один параметр – розрахунковий опір залізобетону, який синтезується за всіма перерахованими вище факторами. Такий підхід до розрахунку залізобетонних елементів робить його універсальним для всіх видів деформацій залізобетонних елементів. Для зручності використання розробленого методу сформовані таблиці значень розрахункового опору залізобетону для різних класів бетону й арматури при визначених відсотках армування. Крім того, отримані прості аналітичні формули, що можуть бути застосовані при отриманні проміжних значень цієї характеристики. Встановлено граничну умову визначення розрахункового опору залізобетону, що характеризується настанням текучості розтягнутої арматури. На основі запропонованої умови визначені граничні значення розрахункового опору залізобетону для нормально армованих залізобетонних елементів, тобто для таких, в яких у момент руйнування напруження розтягнутої арматури досягають межі текучості. У роботі демонструється та підтверджується можливість використання розробленої методики при розрахунках несучої здатності згинальних залізобетонних елементів.
Reasoning of the expediency of using vibration supports with variable parameters
Authors: Sheka Oleksandr , Yakovenko Andrii , Vedmid Vasyl
Published: January 2025

The problem of reducing the negative impact of vibration on staff and equipment and their compliance with sanitary standards is always relevant for construction vibrating machines with vibration exciters of various types and modes. So, in practice, vibration isolation of vibroactive elements of vibrating machines and technological equipment is applied using systems with quasi-zero stiffness. This article highlights the results of experimental studies of changes in the elastic qualities of vibration support parameters at different pressure levels and changes in the length of the free part of the elastic element. Therefore, the construction of a vibration support with a limiter of the free part of the elastic element was developed. The stiffness of the support changes as a result of changing the free part of the support with metal limiters. The results of the search experiment showed that the deformation of the rubber element is carried out according to a law close to the linear one. Therefore, a mathematical model in the form of regression was built to conduct the main experiment and process the obtained data. The obtained regression equation makes it possible to establish the dependence of the shrinkage of the support when the pressure on it changes and the height of the free part of the elastic element.
COVID-19 Research in Africa: A Bibliometric Analysis (2019-2021)
Authors:   Department of Computer Science, Faculty of Science and Engineering, University of Eswatini, Sanni Shamsudeen Ademola , Yusuf Aliyu Olugbenga ,   Department of Library and Information Science; Federal University of Lafia,  PMB 146, Lafia, Nasarawa State, Nigeria, Tsabedze Vusi Wonderboy ,   Department of Computer Science, Faculty of Science and Engineering, University of Eswatini, Mathabele Ntombikayise N ,   University of Eswatini Library, Kwaluseni Campus
Published: January 2025

Background: The COVID-19 pandemic has generated an unprecedented volume of research globally, with a significant but varied focus on Africa. Given the unique socio-economic and healthcare challenges faced by the continent, understanding the landscape of COVID-19-related research in Africa is crucial. This study aimed to analyse the body of literature focused on Africa, identifying patterns, trends, and the conceptual, intellectual, and social structures underlying the research. By uncovering these elements, the study provides insights into the strengths and gaps within the existing body of work, offering a foundation for future research and policy formulation.

Subjects and Method: A quantitative approach was employed to examine 4,290 documents related to COVID-19 research focused on Africa, sourced from the Web of Science (WoS) database between November 1, 2019 to February 1, 2022. The Bibliometrix R-package was utilized for data processing and visualization, enabling the identification of patterns, trends, and underlying structures within the literature.

Results: The analysis revealed significant local and international collaboration in COVID-19 research focused on Africa. Four major themes emerged: (1) Health Systems, Policy, Workers, and Public Health; (2) Mental Health, Depression, and Anxiety; (3) COVID-19’s impact on HIV, Poverty, and Children; and (4) its impact on Education. Institutional collaborations were particularly strong among the top five South African universities, highlighting a robust social structure. The productivity of authors conformed to Lotka’s Law, while periodical distribution followed Bradford's Law of Scattering. Keywords Plus and Abstract Words offered a comprehensive description of the research domain.

Conclusion: The findings highlight the collaborative nature and thematic focus of COVID-19 research in Africa, emphasizing the importance of international collaboration. Future research should address identified gaps to deepen and enhance the impact of studies in this area.

Keywords: Africa COVID-19; COVID-19 research; bibliometrics; citation analysis.