bluuebunny/crossref_metadata_2025 huggingface dataset:
REGENERAÇÃO NATURAL DE ESPÉCIES COMERCIAIS EM ÁREA SUBMETIDA AO MANEJO FLORESTAL EM PEQUENA ESCALA NO MÉDIO AMAZONAS
Authors: De Goes Fábio Balieiro , Amaral Adriene de Oliveira , Santos Alisson Borges Miranda , Miranda Kaline Fernandes , Hardt Ferreira dos Santos Victor Alexandre
Published: July 2023

A investigação da regeneração natural após manejo florestal em pequena escala é crucial para a compreensão dos impactos que a exploração florestal causa na estrutura e dinâmica da floresta. Neste estudo, foi avaliada a regeneração natural de espécies comerciais exploradas em manejo florestal em pequena escala. Para isso, vinte clareiras de exploração foram caracterizadas de acordo com o tamanho, abertura de dossel e altura da floresta de borda. Em seguida, a regeneração natural foi diagnosticada a partir da identificação de espécies comerciais (altura ≥ 1,3 m) em nove parcelas de 2 x 2 m. A associação entre a abundância e riqueza da regeneração natural foi testada com correlação de Pearson. Foram encontrados 205 indivíduos, pertencentes a 42 espécies e 11 famílias. As espécies que comumente se repetiram foram Protium apiculatum, Protium decandrum e Goupia glabra. A abertura de dossel esteve positivamente associada com a abundância e riqueza de espécies, mas não com a composição de espécies. Portanto, existe uma abundante e diversificada regeneração de espécies comerciais nas clareiras e; a disponibilidade de luz afeta positivamente a quantidade de mudas e espécies da regeneração. No entanto, a composição de espécies nas clareiras não depende da disponibilidade de luz e deve ser manipulada via plantio de enriquecimento.
Palavras-chave: área de clareira; disponibilidade de luz; espécies pioneiras.
 
Natural regeneration of commercial species in area submitted to small-scale forest management in the middle Amazon
 
ABSTRACT: The investigation of natural regeneration after small-scale forest management is crucial for understanding the impacts that logging causes on the structure and dynamics of the forest. This study evaluated the natural regeneration of commercial species exploited in small-scale forest management. For this, twenty logging gaps were characterized according to size, canopy opening and forest edge height. Then, natural regeneration was diagnosed from the identification of commercial species (height ≥ 1.3 m) in nine 2 x 2 m plots. The association between the abundance and richness of natural regeneration was tested with Pearson's correlation. A total of 205 individuals were found, belonging to 42 species and 11 families. The species that commonly repeated were Protium apiculatum, Protium decandrum and Goupia glabra. Canopy openness was positively associated with species abundance and richness, but not with species composition. Therefore, there is an abundant and diversified regeneration of commercial species in the gaps and the availability of light positively affects the number of seedlings and species in regeneration. However, species composition in gaps does not depend on light availability and must be manipulated via enrichment planting.
Keywords: gap area; light availability; pioneer species.
Use of generative artificial intelligence in the training of journalists: challenges, uses and training proposal
Authors: Lopezosa Carlos , Codina Lluís , Pont-Sorribes Carles , Vállez Mari
Published: July 2023

Artificial intelligence (AI) is already integrated into news production strategies in some media outlets. Recently, generative AIs such as ChatGPT and others have demonstrated their ability to enhance productivity in content production tasks, raising the question of how journalism faculties can address this new technology. This paper presents an academic study on the application of AI in higher communication studies. The study involved 4 in-depth interviews and 28 semi-structured interviews with university lecturers and researchers. The findings confirm varying degrees of convergence and divergence on different aspects of the technology, including the integration of AI in communication faculties, student training in AI usage, the introduction of AI and journalism as a subject area, and the potential uses of AI in news production and consumption. Additionally, this paper proposes a comprehensive training program on AI and journalism, focusing on its foundations, technical competencies and ethical considerations.
Architecture of project management web services based on integration with natural language processing modules
Authors:   Odessa Polytechnic State University, Odesa, Ukraine, Yegoshyna G.A. , Voronoy S.M.
Published: July 2023

A method for intellectualizing project management web services based on integration with natural language processing modules is proposed. The supporting of high reliability, extensibility and flexibility of the interface of such systems is a necessary condition for the providing of effective tools for developers of software systems of various profiles. It is shown that a prevalent trend in software development is to increase the portability of software in order to ensure the possibility of using the same application in different runtime environments. The advantages of using the concept of “API-first” are highlighted. The features of the “API-first” web server architecture are considered, in which all requests for web services are executed through a single web API interface, and the resource-intensive web pages formation is transferred to a separate structure on the same host or to a separate web server. The advantages of using natural language processing tools to improve the efficiency and availability of project management web services are considered. Project management web service database structure is proposed. All the natural language processing data for the conversational interface consist of user intents list, entities collections list, entities (collocations or word sets). It will be stored within each external language processing web service in the appropriate format automatically. Examples of prototype business logic with functions for the internal and external API are shown. Most of the external natural language processing service handlers are closely related to this business logic.
COMPARATIVE ANALYSIS AND COMPLEX USING METHOD OF ROW AND COLUMN DATABASES
Authors:   National University ", PAROMOVA T. ,   Zaporizhzhya Polytechnic",   , Ukraine, SOLOHUBOV I. , ZELENEVA I. , HOLUB T.
Published: July 2023

"At present, the volume of processed information increases extremely every year and can already reach hundreds of terabytes or several petabytes. This amount of data is always seen in the field of data analysis, modeling, testing, artificial intelligence, etc. Thus, the problem of saving and improving the performance of data processing systems becomes relevant. To solve this problem, many options for the internal organization of the database and DBMS were considered in this field. The main disadvantage of relational databases with row organization when processing large arrays is the irrational use of file system resources and RAM. One of the options for increasing the efficiency of processing large amounts of information is a columnar data organization model. This model proposes storing data in the form of several files corresponding to the data of each column, which in turn are stored in the form of a key-value. This data organization allows you to optimize the amount of information read from the database, as well as use compression, which has a positive effect on system performance. In this paper, the features of the columnar databases organization are experimentally studied, differences from the traditional row organization are considered, the main advantages and disadvantages of both organization options, their architectural features, which provide accelerated data processing, are analyzed. In the paper, a comparative analysis of the speed of information processing was carried out for various options for organizing a database using the example of a MySQL row database and a ClickHouse column database when executing queries of various types and complexity. Based on the experimental studies result, a system architecture with the integrated use of row and column databases was proposed to achieve universality and optimal performance in transactional systems such as OLTP, taking into account the growth in the volume of processed information. The advantages of the proposed complex database management system with different types of data organization is the achievement of a certain level of versatility and increased performance in transactional systems. The disadvantage of such a system may be its volume of data and the complexity of the organization, as well as problems with ensuring reliability. Consideration of reliability problems is a promising area of research. Theoretically, on the basis of the proposed complex system, it would be possible to create a separate type of database management system. It’s necessary to develop a certain external control level that organizes the operation of a complex of two different type databases, then to design a common interface and connect both databases in a modular way to test various combinations. This approach is quite possible, since some database management systems, such as ClickHouse, have several interfaces for interacting with others, such as MySQL, PostgreSQL."
Assessment of the ecological state of green spaces of Almaty city on the example of Bostandyk district
Authors: Sadyrova G.A. , Bazarbaeva T.A. , Mukanova G.A. , Jamilova S.M.
Published: July 2023

The article provides an assessment of the ecological state of green spaces on the example of the Bostandyk district of Almaty. The total area of boulevards, squares and green areas of the Bostandyk district of Almaty today is 147.4 hectares. Bostandyk district of Almaty is one of the three greenest districts of Almaty after Medeu and Turksib districts. As our studies have shown, 95 % of green plantations of tree species in the Bostandyk district of Almaty are represented by introducers and a small part of local species — natives. The landscaping of the territory of the city of Almaty is represented by plantings of different types. These include groves, alleys, gardens, parks, boulevards, squares, green areas, intra-district gardening, street gardening. At the same time, a wide variety of species is observed in gardens, parks, boulevards, groves and a very small use of three or four species in landscaping streets. Among the tree plantations, 35 species are massive, which grow along all the streets, boulevards, squares of the Bostandyk district. From hardwoods: Populus nigra, Populus italica, Populus alba, Fraxinus excelsior and others. From the local natural flora grow — Armeniaca vulgaris, Prunus sogdiana, Fraxinus sogdiana, Rhamnus cathartica, Picea schrenkiana.
Гидрологический профиль реки на водосборной территории бассейна Асса-Талас с учетом техноприродных процессов
Authors: Мустафаев Ж.С. , Козыкеева А.Т. , Абдешев К.Б. , Турсынбаев Н.А.
Published: July 2023

На основе многолетних информационно-аналитических материалов гидрологическими постами РГП «Казгидромет» за 1925–2020 годы создана база исследования для изучения пространственно-временной оценки многолетних колебаний годового стока реки на территории водосбора бассейна Асса-Талас, с использованием метода гидрологической аналогии, линейных трендов, суммарных, разностных и обычных интегральных кривых, базирующихся на математической статистике. Исследования показали, что тенденция изменения среднегодового расхода воды рек на территории водосбора бассейна Асса-Талас за рассматриваемый период (1925–2020) отрицательная, где изменения гидрологического режима реки происходят симметрично и последовательно-пропорционально в пространственно-временном масштабе, наблюдается два квазиоднородных периода, характеризующих переход от природной деятельности на антропогенную. Оценка изменений водности рек на территории водосбора бассейна Асса-Талас и синхронности или асинхронности ее многолетних колебаний, выполненных на основе нормирования разностных интегральных кривых модульных коэффициентов среднегодового расхода воды с использованием метода разностно-интегральных кривых, показала, что во всех гидрологических постах с 1925 до 1975 года наблюдается многоводный цикл, а после этого начинается до настоящего времени маловодный цикл, но с различиями в сроках наступления фаз и амплитуды циклических колебаний. При этом количественное значение коэффициента вариации увеличивается от горной зоны в сторону южной пустыни, где расположены зоны магазинирования поверхностного стока и высокого среднегодового расхода воды во всех рассматриваемых реках наблюдаются в пределах от 1,0 до 25,0 % обеспеченности, а затем их количественное значение резко снижается, что характерно рекам, где источниками питания являются атмосферные осадки, таяние снежного покрова и грунтовые воды.
Representation of the Influence of Travel Vlog on the Development of Tourism (On the Example of the Authorial Channels on Youtube Video Hosting)
Authors: Bozhkо L.
Published: July 2023

The purpose of the article. The purpose of the article is to study and demonstrate the influence of travel vlog on the development of tourism using the example of the authorial YouTube video hosting channels.

The methodology. The research methods were content and discourse analysis of travel vlogs from YouTube video hosting, as well as analysis of their structure and target audience.

The results. Ukrainian YouTube travel vlogs are an important leader of public opinion. This category of Internet bloggers has great potential for use in the promotion of Ukraine as a tourist destination, raising the level of awareness of Ukrainians with Ukraine, organizing leisure activities of Ukrainian citizens and foreign guests.

Analyzing the thematic rating of the videos, especially the latest ones, we came to the conclusion that the most relevant topics for the audience of the channels today are trips to different parts of Ukraine, including those in which there were military actions and which were under occupation, as evidenced by the number of views. Some topics are still silenced in the official media and are not widely discussed, despite the fact that these topics are really relevant for society, especially for young people, since the youth audience is the main audience on the Internet platform YouTube. We can express the hope that Ukrainian travel channels will continue to develop in this direction as a high-quality example of new media and will contribute to the formation of a new Ukrainian audiovisual culture.

It is also undeniable that, as part of Travel 2.0, travel blogs make life easier for consumers of travel services in many ways: they help to learn more about the destination and what it can offer the tourist; help to make decisions about certain destinations, add confidence in the choice. reduce the risks and uncertainties associated with travel planning, etc. Therefore, the blogosphere, in our case, YouTube video hosting, can be considered an effective tool for the development of tourism. Bloggers provide feedback and contribute to the development of the country as a modern and popular tourist destination, and their reviews, opinions, comments are sometimes a more reliable than information from the travel service providers themselves.

The scientific novelty. Consideration of tourism through the prism of audiovisual culture.

The practical significance. The materials of this article can be used to develop programs or strategies for the further development of tourism as an integral part of Ukrainian culture.
CEREBRAL VENOUS THROMBOSIS IN WOMEN OF REPRODUCTIVE AGE: CAUSES AND FEATURES OF THE COURSE
Authors:   State Novosibirsk Regional Clinical Hospital, Novosibirsk, Russia, Rerikh K.V. , Shchepankevich L.A. ,   State Novosibirsk Regional Clinical Hospital, Novosibirsk, Russia; Novosibirsk State Medical University, Novosibirsk, Russia; Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russia, Taneeva E.V. ,   State Novosibirsk Regional Clinical Hospital, Novosibirsk, Russia, Gribacheva I.A. ,   Novosibirsk State Medical University, Novosibirsk, Russia, Popova T.F. ,   Novosibirsk State Medical University, Novosibirsk, Russia, Novikova I.N. ,   Novosibirsk State Medical University, Novosibirsk, Russia
Published: July 2023

Cerebral venous thrombosis (CVT) is a brain lesion due to impaired blood circulation, caused by thrombosis of the intracranial veins and sinuses, leading to an increase in hydrostatic pressure in the proximal veins and capillaries, as a result of which cerebral edema and ischemia develop, and, consequently, cerebral infarction is formed. CVT is especially common in women aged 20 to 35 years, which is largely due to the course of pregnancy and the postpartum period, as well as the use of oral contraceptives. Disturbances in the hemostasis system play a key role in the pathogenesis of these thromboses. Data have appeared on the impact of a novel coronavirus infection on the development of cerebral venous thrombosis, both directly, influencing the mechanisms of thrombosis, and indirectly through the mechanisms of inflammation and endothelial lesion. The article analyzes possible factors in the development of cerebral venous thrombosis, discusses mutually potentiating mechanisms in the presence of several significant prothrombotic diseases in women of reproductive age.
LATE METASTASIS OF UVEAL MELANOMA (CASE REPORT)
Authors:   Novosibirsk State Medical University, Novosibirsk, Russia, Fursova A.Zh. ,   State Novosibirsk Regional Clinical Hospital, Novosibirsk, Russia, Amir I.M. ,   State Novosibirsk Regional Clinical Hospital, Novosibirsk, Russia, Belyaeva A.I. ,   S.N. Fedorov NMRC "MNTK "Eye Microsurgery", Novosibirsk, Russia, Buyanova M.B. ,   Aldan Central District Hospital, Aldan, Republic of Sakha (Yakutia), Russia, Gubin P.G. ,   Novosibirsk State Medical University, Novosibirsk, Russia, Porshennikov I.A. ,   Novosibirsk State Medical University, Novosibirsk, Russia; State Novosibirsk Regional Clinical Hospital, Novosibirsk, Russia
Published: July 2023

Uveal melanoma is the most common primary intraocular malignant tumor among the adult population, its prevalence is more than 85% in the structure of all melanomas. Worldwide, the annual incidence of uveal melanoma is 6 cases per 1 million people. Despite the ongoing search for an effective treatment for uveal melanoma, there has not been a significant increase in the 5-year survival rate (~80%) in recent years, and approximately 50% of patients develop metastatic disease. The aim of this research was to analyze the clinical case of a female patient with metastatic uveal melanoma diagnosed with a metastatic lesion 28 years after enucleation. Modern possibilities of complex diagnostics using clinical, histopathological, cytogenetic and immunohistochemical markers determine the possibilities of performing polychemotherapy and determine the prognostic criteria for the life expectancy of patients.
Microsatellite instability and hyperplastic processes of the uterine mucosa
Authors:   South Ural State Medical University, Chelyabinsk, Russia, Kazachkov E.L. , Zatvornitskaya A.V. ,   South Ural State Medical University, Chelyabinsk, Russia, Kazachkova E.A. ,   South Ural State Medical University, Chelyabinsk, Russia, Voropaeva E.E. ,   South Ural State Medical University, Chelyabinsk, Russia
Published: July 2023

Introduction. Microsatellite instability is historically closely associated with the development of oncological processes. Early diagnosis of microsatellite instability as a marker for premalignancy, including in the case of endometrial hyperplasia (EH), which is recognized as a premalignancy lesion, is of interest. Identification of the mutational profile characteristic of malignant tumors in benign disease makes it possible to improve prognostic models and therapeutic tactics. Aim. Determination of clinical and anamnestic features of patients with EH and endometrioid adenocarcinoma in a comparative aspect, as well as structural features of microsatellite instability in the endometrium in patients with this pathology. Materials and methods. The study involved 120 women who were divided into 4 groups: group I – EH patients without atypia (n = 30); group II – patients with atypical EH (n = 30); group III – patients with endometrioid adenocarcinoma (n = 30); group IV – healthy women without somatic and gynecological pathology (n = 30). A comparative morphological study of endometrial samples was performed and levels of MLH-1, MSH-2, MSH-6 and PMS-2 expression were assessed. Results. It was revealed that most EH patients without atypia, patients with atypical EH, endometrioid adenocarcinoma complained of abnormal uterine bleeding; the history of patients of these groups is characterized by the presence of cardiovascular and endocrine diseases, and the gynecological history is characterized by the presence of uterine fibroids, benign breast diseases and pelvic inflammatory diseases. There was found a decrease in the MLH-1, PMS-2, MSH-2 and MSH-6 expression in endometrial biopsies of women with EH. Conclusion. Decreased expression of MLH-1, PMS-2, MSH-2 and MSH-6 in endometrial biopsies can probably be considered as a predictor of premalignant transformation, which requires further study in order to develop a program of malignancy risk assessment.
Risk factors for an adverse outcome of HIV infection associated with cytopenia
Authors:   Omsk State Medical University, Omsk, Russia, Kalashnikova D.V. ,   Clinical Tuberculosis Dispensary No. 4, Omsk, Russia, Mordyk A.V. ,   Omsk State Medical University, Omsk, Russia, Puzyreva L.V. ,   Omsk State Medical University, Omsk, Russia; Regional Clinical Hospital, Omsk, Russia
Published: July 2023

Introduction. The appearance of hematological abnormalities since the beginning of the HIV-infection epidemic has been associated with an increased risk of disease progression and death in these patients. Aim. Determination of risk factors for an adverse outcome in patients with HIV infection and cytopenia. Materials and methods. Hemograms and myelograms were analyzed in 30 hospitalized patients with HIV infection and cytopenia. All patients had two- or three-lineage cytopenia according to hemogram (anemia and thrombocytopenia, anemia and leukopenia, pancytopenia). Two groups of patients were assigned: in 18 (60%) patients the hospitalization had fatal outcome – group 1 (adverse outcome of the disease); and 12 (40%) patients were discharged from the hospital – group 2 (favorable outcome of the disease). Results. While evaluating the hemograms in patients with HIV infection and cytopenia with different outcomes of the disease, no statistically significant differences were found. Analysis of the bone marrow cellularity showed that the hypocellular and normocellular bone marrow were more often recorded in myelograms of group 1 patients; hypercellular bone marrow was not detected in group 1 patients, in group 2 patients it was determined in 4 cases (33.3%). The cellularity of the erythroid lineage was more often decreased in patients of group 2, normal and increased – in patients of group 1. The granulocyte lineage was more often suppressed in patients of group 1, was normal in patients of group 2, stimulated more often in patients of group 1. The megakaryocyte lineage more often had a decreased cellularity in group 1 patients; normocellularity of the megakaryocyte lineage was in group 2 patients; hypercellularity of the megakaryocyte lineage was not registered in the study groups. When comparing the signs of myelodysplasia in 13 patients of group 1, signs of dyspoiesis were revealed. Conclusion. In patients with HIV infection and cytopenia, as the underlying disease progresses, severe hematological disorders develop, which, in turn, may be risk factors for an adverse outcome of HIV infection.
Egressos da educação superior: perspectivas sociais e profissionais em Manaus
Authors: Bezerra Francisco José Souza , Felicetti Vera Lucia
Published: July 2023

Este trabalho mostra como se configura a inserção dos egressos da Faculdade La Salle Manaus na sociedade, considerando aspectos relacionados ao estudante quando do ingresso no curso, aspectos que permearam seu percurso na faculdade e os resultados da formação acadêmica conquistada. A inserção dos egressos mostra a formação em nível superior sendo valorizada à medida que o egresso atua na área de formação, teve aumento de salário após a graduação e sente-se satisfeito com a formação, dentre outras evidências que são apresentadas ao longo deste volume, dando lugar às ações afirmativas no contexto educacional.
REGULAR AND COMPLEX BEHAVIOR OF A PENDULUM SYSTEM IN A MAGNETIC FIELD
Authors:   National Technical University «Kharkiv Polytechnic Institute», Surhanova Y. , Mikhlin Yu. ,   National Technical University «Kharkiv Polytechnic Institute»
Published: July 2023

The dynamics of an oscillatory dissipative system consisting of two connected pendulums in a magnetic field is considered. The connection of these pendulums is realized by some elastic element. The inertial components of pendulums vary widely, and the mass ratio is chosen in analytical investigation as a small parameter. For approximate calculations of magnetic forces, the Padé approximation which best satisfies the experimental data, is used. Such approximation permits to describe the magnetic excitation with good accuracy. The presence of external influences in the form of magnetic forces and various types of other loads that exist in many engineering systems leads to a significant complication in the analysis of vibration modes of nonlinear systems. Nonlinear normal modes (NNM) are analysed in the system where one mode is connected and the other is localized. These modes are constructed by the multiple scales method. It is studied as the regular, as well the complex behaviour when changing system parameters, including the pendulums mass ratio, the coupling coefficient, the magnetic impact intensity coefficient, and the distance between the axis of rotation and the center of gravity. The influence of these parameters is studied at both small and not small initial angles of the pendulums. The analytical solution is compared with results of numerical simulation which is based on the Runge–Kutta method of the fourth order, where initial values of variables defined in the analytical solution are used. Numerical simulation, which includes construction of phase diagrams and trajectories in the configuration space, permits to estimate the system dynamics which can be as regular, as well irregular one. The mode stability is studied by the numerical-analytical test which is a numerical realization of the Lyapunov stability criterion. Here the mode stability is determined by analysis of orthogonal deviations from the mode trajectory in the system configuration space. Keywords: connected pendulums, magnetic forces, nonlinear normal modes, multiple scales method.
LIMIT STATE OF A I-REINFORCED SECTION USING ELASTOPLASTIC DIAGRAMS OF DEFORMATION OF MATERIALS
Authors:   Odesa State Academy of Civil Engineering and Architecture, Soroka M.
Published: July 2023

The paper considers a technique for constructing the strength area of a I-reinforced section. The concept of "section strength area" is used in structural calculations based on ultimate equilibrium. The strength area is a closed area in the coordinates "moment - longitudinal force". A specific feature of the section strength region is that inside the strength region the section operates in the elastic stage, and at its boundary it passes into the limiting state with the possibility of unlimited plastic deformation. The equations describing the boundary of the section strength region are often called yield conditions. The complexity of obtaining dependencies describing the boundary of the section strength region largely depends on what mathematical dependencies describe the physical properties of the materials from which the section is made. In this work, it is assumed that the material from which the section is made and the reinforcing material are deformed according to the law of an ideal elastoplastic body. Thus, the deformation diagrams of materials are described by the Prandtl diagram. Moreover, the material from which the section is made has different yield strengths in tension and compression. The reinforcing material has the same tensile and compressive yield strengths. When deriving the equations describing the strength region of the section, it was assumed that a bending moment and a longitudinal force applied in the center of the I-beam wall. Taking into account that the section of an I-beam can be asymmetrical and have asymmetric reinforcement, different equations are used to describe the upper and lower boundaries of the strength region. To construct the strength area, in the general case, it is necessary to solve the optimization problem - for a given value of the longitudinal force, find the extreme value of the moment, taking into account the constraints (equalities and inequalities). Analysis of the results obtained in this way for a symmetrically reinforced section made it possible to propose a simpler technique for constructing the strength area of a I-reinforced section without solving the optimization problem. Keywords: elastoplastic body, reinforced I-section, strength area, calculation by limit equilibrium
THE MULTI-STOREY BUILDINNGS STEEL FRAMES VITALITY IN THE FIRE INCREASING
Authors:   Kyiv National University of Civil Engineering and Architecture, Daurov М.К. , Bilyk A.S. ,   Kyiv National University of Civil Engineering and Architecture
Published: July 2023

In the article multi-story buildings steel frames in the fire before and after the first destruction is investigated, the frames vitality in the fire is investigated. It is emphasized on the relevance of the research during the war of the russian federation against Ukraine. An overview of previous domestic and foreign scientists’ studies, devoted to the multi-story buildings steel frames vitality, in particular in a fire. The frame model for research was selected and simplifications was required in the study for the clarity of comparisons in research. There were compared different mechanisms of multi -story buildings steel frames collapse in a fire. It is proved that with the first destruction in the steel frame beam the vitality loss time will be longer than with the column first destruction. Various measures vitality increasing frames are considered and investigated. Outrigger systems were investigated as a measure vitality increasing, and their impact on the forces distribution in the frame during heating of frame elements under the action of temperature loads from a fire. The dependence of various measures vitality increasing of multi-story buildings steel frames in the fire from the frame geometric sizes is established. It is established that the load -bearing capacity factor at the fire beginning in the most loaded column should be smaller than the most loaded beams. It is proved that the difference between the initial load-bearing capacity factor in the beam and column that necessary to increase the vitality loss time, is different for different ratios of beam span to the column height. It is revealed that the frame elements cross-sections shape affects its vitality in the fire. The importance of the limited plate deformations development in the frame elements cross-sections is emphasized. Recommendations for civil engineers to enhance the of multi-story buildings steel frames vitality in a fire are formed.
ELASTIC WAVEFORMS ANALYSIS IN THE LOAD LIFTING CRANES ROPES
Authors:   Kyiv National University of Construction and Architecture, Chovnyuk Y. , Priymachenko A. ,   Kyiv National University of Construction and Architecture, Cherednichenko Р. ,   Kyiv National University of Construction and Architecture, Ostapushchenko O. ,   Kyiv National University of Construction and Architecture, Kravchenko I. ,   Kyiv National University of Construction and Architecture
Published: July 2023

In the article the boundary value problem on the elastic longitudinal waves motion in the load lifting cranes and mine mechanisms variable length ropes is considered. Solutions of the Cauchy problem, which describe longitudinal oscillations propagation in the ropes (flexible suspensions) as in areas with moving boarders, are found. Displacements and stresses dynamic fields in variable length steel ropes of the specified load lifting mechanisms are investigated. Usually the ropes are balanced, and the main rope carries concentrated stress which before the systems movement was at the main ropes lower end. Dynamic forces in perfectly elastic variable length steel ropes estimation is shown, that only when lifting ropes without end loads under non-integrated boundary conditions, their efforts do not increase. However, practical experience shows that this phenomenon is not observed at moderate lifting speeds due to the fact that along with the dynamic forces amplitudes increase. Due to the decrease in length there is a simultaneous decrease in the amplitudes of their oscillations. The object of analysis refers to a wide range of variable length oscillations one-dimensional objects. A classical mathematical model to describe oscillations and waveforms is used. When studying wave fields in areas with moving boundaries the reflection of pulses from such boundaries is established. Elastic type waveforms in variable length rods (rope models) taking into account the fact that these rods have circular cross section of variable (length of rope/rod) area (rods are cylindrical, rotational paraboloids form, conical rods) is considered. Method based on the possibility of constructing wave equation from waves reflected from fixed and moving given boundaries of a semi-infinite domain solutions is applied.
FEATURES OF THE HARMONIZATION OF VOLUME-SPATIAL ARCHITECTURE OF MODERN HOUSING IN THE HISTORICAL ENVIRONMENT OF THE POLISH CITY OF GDANSK
Authors:   Kyiv National University of Construction and Architecture, Popovych D.S.
Published: July 2023

The Polish city of Gdansk is a rather interesting and special European city in terms of architectural features of the city's historical development. And after the Second World War, Polish architects did a great job of restoring the city, preserving the historical architectural heritage and harmonizing modern architecture in the historical context. This scientific study analyzes the peculiarities of the reconstruction of the historical districts of the city, the implementation of international charters, the peculiarities of the historical architecture of the Polish city, and defines the main architectural styles that are widespread in the historical districts of the city. Three architectural objects from historical periods are analyzed: Renaissance (the Kamienica Czirenbergów-Frederów building, Baroque (the building at Długi Targ Street 20), Classicism (the building at Mariacka Street 14). The features that combine the architecture are analyzed all three styles, in this way we determine the features of the historical architecture of the city. The peculiarities of the harmonization of the facade architecture of modern housing in the historical buildings of the city of Gdańsk are determined. According to our own methodology, we determine the principles that are most suitable for harmonizing the modern with the historical during design. An analysis of the built object on Szeroka Street (architect A. Taraszkiewicz) of modern housing in the historical context is carried out, according to the criteria developed according to the scheme, such as shape, color scheme, size, balance, facade fabric, proportions of window and door openings and materials used in construction. As a result of the analysis according to the criteria, the principles of harmonization, according to which the architecture was formed, are determined. It discusses the challenges faced in designing and building in the historic district and how the city government, the public, the client and the architects consolidated their efforts to solve the complex issues.
A the PELATIHAN PEMANFAATAN EDPUZZEL DALAM PEMBUATAN MEDIA PEMBELAJARAN INTERAKTIF BAGI GURU MAN.2 MODEL PEKANBARU
Authors: Lasri Nijal  , Zamzami  , Siswanto Didik
Published: July 2023

Keterbatasan kemampuan dalam pemanfaatan internet sebagai media pembelajaran online yang menarik. Sehingga para guru di sekolah mitra lebih cenderung menerapkan model pembelajaran dengan menggunakan media pembelajaran yang minim dan tidak menafaatkan internet  dengan  baik.  (pengusul  IbM)  menawarkan  solusi  terhadap  permasalahan  yang dihadapi oleh para guru –guru SMA MAN 2 Model Pekanbaru kecamatan Rumbai kota Pekanbaru  melalui  kegiatan  pemanfaatan  internet  sebagai  media  pembelajaran  online. Contoh penerapan internet sebagai media pembelajaran online seperti Edpuzzle, Padlet, dan Quizlet Dari kegiatan pengabdian yang telah dilaksanakan dapat disimpulkan bahwa system evaluasi pembelajaran dapat dilaksanakan dengan berbagai metode. Dalam model pembelajaran saat ini, guru dituntut untuk lebih kreatif dan inovatif dalam mengelola fitur platform pembelajaran khususnya dalam pemberian soal dan quiz. Quiz online dapat diselenggarakan untuk mempermudah kinerja guru. Berbagai fitur quiz online dapat diatur sesuai dengan keinginan guru dan tentunya hal ini dapat mempermudah proses pelaksanaan evaluasi atau tes.
Amor romántico, fidelidad y happy endings: percepción del reality TV show La isla de las tentaciones por la juventud española
Authors: Blanco-Ruiz Marian , Martínez-Pastor Esther
Published: July 2023

La versión española del dating show "Temptation Island" ha surgido como un fenómeno de masas entre la población joven española. El objetivo de esta investigación es indagar sobre la opinión de la juventud española sobre las relaciones amorosas mostradas en los dating shows, así como explorar el grado de identificación o rechazo de las historias de amor de estos formatos audiovisuales. Para ello, se diseñó una entrevista guiada por medios telemáticos a 123 jóvenes (74,8% mujeres, 25,2% hombres) de entre 18 y 26 años residentes en España. Los resultados muestran que los y las jóvenes rechazan, en general, los modelos de relaciones amorosas mostrados en "La isla de las tentaciones". Más del 98% muestra una actitud desfavorable hacia los roles de las parejas que compiten, siendo las mujeres las que se posicionan más en contra. Sin embargo, a pesar de demostrar un cierto grado de desmitificación del mito de los celos por amor, identificando ciertos comportamientos como "tóxicos" y, a veces, incluso rechazando explícitamente los roles de género o el amor romántico, se observa en las entrevistas un discurso que refuerza el mito de la fidelidad y los estereotipos de género asociados.
Leadership Behaviour and Human Resource Management Practice Mediation between Strategic Plan and Performance of Selected Ethiopian Sports Federation
Authors: Tadesse Samson , Asgedom Tesfay , Taddese Aschenaki
Published: July 2023

The purpose of the study was to identify the relationship between strategic plan and performance through leadership behavior and human resource management practices (HRMP) of a selected Ethiopian sports federation. For this study's purpose, the researcher used quantitative research and a cross-sectional research design. A sample size of ninety-five (n = 95) respondents was used in this study. The quantitative data analysis was processed using IBM SPSS Amos 23.0 software. Structural equation modeling has been used to study this relationship. Confirmatory Factory Analysis (CFA) was used to test the hypothesis between strategic plan and performance through leadership behavior and human resource management practices of a selected Ethiopian sports federation. The result of the study shows leadership behavior and HRMP play an important mediating role between strategic plans and the performance of sport federations ( =.86, P = 0.00). The findings of the study confirm that leadership behavior and HRMP partially mediate the relationship between strategic plan and performance in both federations. The study recommended that it is advisable that selected Ethiopian sports federations work on capacity development programs for human resource development and take up-to-date leadership training frequently; this will enhance the performance of both federations.
Learning Management of Student Center Based Physical Education in Improving Student Character
Authors: Saputro Arnaz Anggoro
Published: July 2023

Learning management is an important thing that needs attention, in this case an understanding of the 2013 curriculum needs to be mastered by a teacher so that learning is effective. The lack of teacher facilities or media to add insight into this matter is the impact of inappropriate learning. Based on this, it is necessary to know how to manage physical education learning at SMP Negeri 1 Jombang. Descriptive qualitative methods are used to find out findings in the field and these analytical methods can present research results in more detail. 2 teachers who teach physical education were selected as research respondents based on the criteria of the subjects taught. Data collection uses the help of observation guide instruments, interviews and documentation. Through the research that has been done, it was found that the management of physical education at SMP Negeri 1 Jombang has been carried out well. However, there are several factors that need to be improved, namely regarding the preparation of teachers in completing learning equipment such as syllabus before learning activities are carried out. The lesson plan is prepared so as not to create the impression that a sports and health physical education teacher is carrying out his duties. their daily life only carries out their obligations or only fulfills the demands of their superiors which in the end student learning outcomes become less than optimal.
A MODIFIED MODEL OF KARAGOZIAN & CASE CONCRETE IN LOGOS SOFTWARE PACKAGE
Authors: Abakumov A.I. , Safronov I.I. , Smirnov A.S. , Dyanov D.Y. , Medvedkina M.V.
Published: July 2023

The paper describes a local model of concrete on the basis of Karagozian & Case (K&C) approach that is successfully used for computed description of the behavior of concrete and reinforced concrete constructions under dynamic loadings. A modified option of the K&C model is presented aiming at the expansion of functional capabilities of the model and providing the details of its computer realization, which is scarcely described in publications. Basic ratios of the model are provided: the equation of state of the environment with compacting; limiting surfaces of the initial yielding flow, maximum and residual strengths that depend on pressure; limiting surfaces as a function of the third invariant in the form of William-Vonke; evolution of the concrete damage; partially-associated plastic yielding to account for dilatancy; simplified regularization of the model at the stage of the loss of strength of the environment; account for isotropic reinforcement, the strain rate using the strengthening factor of the concrete; auto-generation of the model parameters. Besides, the following options have been introduced: degradation description of the elastic hardness of the concrete to simulate cyclic loading; account for the concrete behavior as a function of the strain rate by the mechanism of viscoplastic flow; model regularizing by the set energy of the concrete destruction.
The represented modified model of K&C concrete is realized in explicit dynamic module of LOGOS software package for a supercomputer. The initial data and the scheme of the model algorithm are described. Model realization has been verified using test examples of simulation of the concrete samples behavior under quasi-static loading until destruction: uniaxial and triaxial compression, uniaxial and two-axial compression and stretching, cyclic uniaxial stretching. The considered problems show compliance of the K&C model and the behavior of the concrete in the experiments.
DYNAMICS OF A BODY UNDER THE IMPULSE FORCE AND WITH OSCILLATION LIMITER
Authors: Igumnov L.A. , V.S. Metrikin , Nikiforova I.V.
Published: July 2023

The paper investigates the dynamics of a body under a piecewise constant periodic force with an arbitrary duty cycle and in the presence of an oscillation limiter. The mathematical model is a strongly nonlinear non-autonomous dynamical system with a truncated phase space along one of the phase coordinates. Using the point mapping method for strongly nonlinear (vibro-impact) dynamical systems, equations for two-dimensional Poincare map are obtained in the form of explicit analytical formulas. The relations obtained for Poincare map made it possible to effectively study the rearrangements of arbitrarily complex periodic motions with both a finite and an infinite number of fixed points, depending on the change in the parameters of the dynamical system. This allowed us to represent for the first time an analytical form of the equations that define in the parameter space the boundaries of the existence and stability domain of periodic motions with an infinite number of fixed points on the Poincare surface (corresponds to the infinitely impact mode of motion). The numerical experiments presented in the paper using a software product developed in the C++ language made it possible to present bifurcation diagrams that clearly demonstrate the ranges of parameter values with chaotic motion modes of the body. A scenario for the emergence of chaos has been established. The transition of body motions with a change in the overload parameter from periodic motion modes to chaos is carried out according to the period doubling. Comparison of numerical analysis with analytical results for different sets of parameters of the system under study (overload parameter) showed their good agreement.
ON THE STRESS WAVE IN THE EARTH'S BODY DUE TO DIFFERENTIAL ROTATION OF THE MANTLE AND CORE
Authors: Fevralskikh L.N.
Published: July 2023

Seismic energy generated as a result of elastic deformation of tectonic plates or blocks of rocks is realized by unloading at deformations exceeding the ultimate strength of rocks. The currently generally accepted earthquake source models are essentially local and are not able to establish a connection between seismic activity and some geophysical phenomena on a planetary scale. One of the features of seismicity is the recurrence of strong earthquakes in one place after a certain time interval.
The purpose of this work is to study the influence of differential rotation of the solid core and mantle on seismic processes. It has now been established that the rate of rotation of the solid core exceeds the rate of rotation of the mantle. In relative motion, the solid core makes one revolution presumably in 200–400 years. Earlier, based on this, an explanation was proposed for long-period variations in the length of the day. In this paper, on a simple mechanical model, it is shown that the differential rotation of the elastic mantle and the solid core of an ellipsoidal shape generates a stress wave in the Earth's body. The idea of a stress wave is qualitatively new in the physical description of a seismic process.
To demonstrate this effect, a solution is given to the problem of deformation of an elastic spherical shell interacting with a dumbbell-shaped solid body rotating in its cavity. When solving the problem, the apparatus of spherical vectors was used. The stress distribution of the spherical layer inside the shell is constructed and the areas of greatest risk are identified. It is shown that taking into account the differential rotation leads to the migration of the zones of greatest risk with a period equal to half the period of a complete rotation of the dumbbell relative to the shell (100–200 years). The results of the work can be useful in studying the relationship between seismicity and planetary rotation regimes.