bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Analysis of Dual Slot Pulsating Nanofluid Impinging Jets
Authors: Taşkiran Ali , Kıstak Celal , Kapan Sinan , Çelik Nevin , Dağtekin İhsan
Published: December 2024

Jet impingement is a widely utilized technique in engineering, particularly for cooling high-temperature systems like aircraft engines and electronic devices. This study employs numerical analysis to examine the flow dynamics of dual impinging pulsating nanofluid jets, utilizing the ANSYS software platform. This research examines the combined impact of key parameters, including jet geometry, pulsation frequency and amplitude, nanoparticle volume concentration, and Reynolds numbers, on the efficiency of heat transfer. The impact of aluminum oxide (Al₂O₃) nanofluids with varying concentrations (1%, 2%, 4%, and 5%) on thermal performance is assessed. The findings of the study demonstrate that the pulsating jets generate bidirectional swirling flows and reverse vortices upon impact with the surface, resulting in notable enhancements in local heat transfer rates. These vortices expand and form wall jets, which contribute to an increase in the heat transfer coefficients and Nusselt numbers. The simulations demonstrate that higher pulsation frequencies (30 Hz) result in a 10% increase in heat transfer efficiency compared to lower frequencies (10 Hz). This is attributed to enhanced flow dynamics and improved heat distribution. Moreover, the incorporation of nanoparticles markedly enhances heat transfer efficiency. The Nusselt numbers were observed to increase by 18% when the concentration of nanoparticles reached 5%, in comparison to plain water. Additionally, the study underscores the significance of jet spacing, wherein an optimal separation distance of 100 mm between the dual jets was identified as a means of maximizing heat transfer by fostering effective vortex interactions. Higher Reynolds numbers contribute to the formation of thinner thermal boundary layers, thereby facilitating increased heat transfer rates, particularly at the stagnation points where the flow impinges directly on the surface. Overall, the study demonstrates that substantial enhancements in heat transfer can be achieved by optimizing key parameters such as pulsating frequency, amplitude, nanoparticle volume concentration, and jet distances.
Investigation of The Effect of Radius of Curvature on Buckling Load in Thin-Walled Beams
Authors: Yanen Cenk
Published: December 2024

This study examines the effect of curvature radius on the buckling behavior of thin-walled beams, which are commonly used in aerospace, automotive, and structural engineering due to their high strength-to-weight ratios. The buckling phenomenon, which represents a critical failure mode for thin-walled hat-shaped structures, was investigated under axial loading through the utilization of numerical methods. A nonlinear analysis was conducted using ANSYS Workbench to model three distinct geometries with varying curvature angles and identical dimensions. The models were subjected to analysis in order to ascertain the critical buckling loads and reaction forces at a displacement of 1 mm, with a particular focus on both nonlinear and post-buckling behavior. Given its importance in structural applications, Aluminum Alloy NL was selected as the material. The eigenvalue buckling analysis identified the critical loads for the first ten modes, revealing that models with higher curvature angles demonstrated more stable buckling characteristics, whereas those with smaller angles were more prone to local deformation. A post-buckling analysis was conducted to ascertain the nonlinear load-bearing capacities of these structures.
Developing A Framework for The Indian Pharmaceutical Supply Chain Risks Assessment through FMEA Approach
Authors: Sangode Pallawi Baldeo
Published: December 2024

In the last years, specifically post Covid-19, pharmaceutical industry has gained a significant place in the healthcare domain. Pharmaceutical companies are the important players in the supply chain of drugs. With increasing competition, growing population and changing complexities of type of diseases, the need of pharmaceutical products has swelled over time, making the sector prone to supply chain risks. The purpose of this paper is to identify and access various risks in the pharmaceutical supply chain in the context of India. To attend this objective, a case of a major pharmaceutical company had been considered. Failure Mode and Effect Analysis (FMEA) has been used to identify and further prioritize these risks. Further Pareto analysis, also called as 80/20 rule, is conducted to identify the risks that are vital. The "80/20" rule suggested prioritizing 17 from 35 potential causes. Second level Pareto analysis identified 6 risk elements out of these 17 elements as most critical. Root cause assessment on these six risks is done through Five Why technique. The results of this study exhibited that Inventory Planning Issues, Labour Issues, Insufficient Storage Space, Raw Material Availability Issues, Inappropriate Forecasting, Communication Issues were the most critical issues in the pharmaceutical supply chain. The major cause to the eruption of these risks is improper Sales and Operations Planning (S&OP). This study suggests that the managers of the pharmaceutical supply chain should first understand the various risks in the supply chain that can disrupt the function. Further through prioritization of risks, the losses or the delays in the supply chain can be reduced.
Las múltiples vidas de Orélie: Un breve análisis de La película del rey y Un rey para la Patagonia. Una superproducción subdesarrollada
Authors: Rodríguez Marino Paula Jimena
Published: December 2024

Esta propuesta presentará las formas de escenificar a la Patagonia en La película del rey (Carlos Sorín, 1986) y Un rey para la Patagonia. Una superproducción subdesarrollada (Lucas Turturro, 2011). Se analizará cómo se asocia la Patagonia al territorio y a los paisajes desérticos. Esto se realiza a través del uso del cronotopo del camino (Bajtín, 1990) y del de la incertidumbre, junto a los emplazamientos de tránsito. Por último, nos adentraremos en las formas en las que se presenta a Orélie Antoine de Tounens.
Bases para una cinemateca local: construcción de un archivo de cine y artes audiovisuales de Cuenca-Ecuador (1980-2020)
Authors: Narváez Geovanny
Published: December 2024

Aquí se presentan los resultados de la investigación sobre la construcción del primer archivo de cine y artes audiovisuales de Cuenca (Ecuador), entre 1980 y 2020. Para ello, se parte de una revisión del estado de la cuestión y una breve historia del cine local; enseguida, en la aplicación práctica, se presenta una primera catalogación con la cual se realiza un sucinto análisis sobre los modos de producción de este cine local. En la parte final, se diseña una plataforma digital (sitio web) donde se dispone el archivo al público. Este proyecto encuentra su justificación porque en la ciudad de Cuenca no existe una cinemateca física ni virtual; por lo tanto, esta catalogación y análisis constituye un asentamiento inaugural y simbólico de bases para una cinemateca local en la era digital.
Bases de una radio local para el desarrollo social.
Authors: Herrera Barreda Dagmar , Sandoya Valdiviezo César Teodomiro , Vivas Moreno Agustín
Published: December 2024

El artículo explora la incidencia de la radio en los microespacios con énfasis en la experiencia comunitaria latinoamericana, y realiza una propuesta de bases para potenciar su capacidad comunicativa e incidir en el desarrollo social. Parte de un estudio empírico conceptual que revaloriza las prácticas gestadas en los espacios locales y pueden incidir positivamente en el reforzamiento del tejido comunitario, la identidad y la generación de cambio social. La estrategia metodológica se sustenta en el análisis síntesis, la triangulación, la investigación bibliográfico documental, la encuesta y la entrevista. La propuesta se centra en la participación ciudadana voluntaria, el empoderamiento de la comunidad y la articulación con los objetivos de desarrollo local.
Mediación pedagógica y objetos digitales
Authors: González Pérez Carlos Federico , Baduzzi Mariana , Vidal José Fernando , Pasquini Ornella , Tinte Shaira Verónica , Vilca Lautaro
Published: December 2024

Este artículo analiza los procesos de apropiación producidos por estudiantes sobre mediaciones pedagógicas con objetos digitales implementadas en distintas carreras de una universidad argentina. Se describen estas mediaciones digitales puestas en práctica en las cátedras seleccionadas y se analizan sus formas de implementación.
Se realizaron veinticuatro grupos focales que permitieron obtener una gran cantidad de datos, los que se analizan interpretativamente esclareciendo la relación establecida entre las mediaciones pedagógicas y los objetos digitales que se utilizan en la actualidad. La sistematización interpretativa se realiza con respecto al tratamiento desde el tema, tratamiento desde el aprendizaje y tratamiento desde la forma.
La investigación evidencia la necesidad de que la presentación de conocimiento se realice de manera ordenada y planificada, aporta reflexiones sobre los procesos de autoaprendizaje e interaprendizaje con objetos digitales, y muestra la necesidad de implementar lenguajes multimodales para la mejor apropiación de conceptos. Se sistematiza e incorpora como categoría el acceso/disponibilidad de objetos digitales. El análisis permite concluir que el concepto de mediación pedagógica reviste una vigencia absoluta, y su desarrollo, en clave de tratamiento desde el tema, el aprendizaje y la forma, es fundamental para comprender los procesos educativos y de construcción de conocimiento en el presente.
Los servicios de agencias de noticias del mundo según su tipo de financiamiento
Authors: Nanni Guillermo
Published: December 2024

Esta investigación clasifica los servicios de agencias de noticias en los países miembros de las Naciones Unidas según el financiamiento y el tipo de servicio. Utilizando una metodología cuantitativa analítica, se recolectaron y analizaron datos de los estados miembros para identificar patrones y relaciones entre el tipo de financiamiento (estatal o privado) y factores como el sistema de gobierno y el PBI. Los resultados muestran una predominancia del financiamiento estatal en todo el mundo. También se observa que en países democráticos y económicamente desarrollados hay más servicios con financiamiento privado. En Latinoamérica se proyectan tendencias similares a nivel global. La investigación subraya la importancia de la independencia editorial y la diversificación para la sostenibilidad de las agencias de noticias en el entorno mediático actual.
Crecimiento, densificación y desborde en asentamientos populares de la periferia sur de la Ciudad de La Plata.
Authors: Espinel María Haydeé , Durante María Eugenia
Published: December 2024

En los últimos años, la ciudad de La Plata ha resultado una de las zonas con mayor crecimiento de la región, tanto por densificación como por expansión. Este artículo se propone indagar en un sector de la periferia sur donde ocurrió en 2020 uno de los procesos de ocupación más grandes de los últimos años, en el ex Club de Planeadores. Se parte de la pregunta de si dicha ocupación es, en parte, producto de un desborde de los asentamientos populares aledaños, ante lo que se despliega una investigación y análisis cuantitativo que permita caracterizar estos procesos de crecimiento urbano.
uso de las noticias por los jóvenes
Authors: Gonzalez Ponce Citlalli , García Valencia Édgar Alejandro , Mar Vázquez Guadalupe , Arroyo Gopar María Teresa de Jesús
Published: December 2024

El trabajo que presentamos es un primer acercamiento a los consumos de contenidos informativos por estudiantes de la Carrera de Comunicación y Periodismo en Veracruz, México. Los datos aquí reportados son el resultado de la primera fase de la investigación en la que se realizaron grupos focales, que indican el uso predominante de redes sociales para informarse por parte de los jóvenes, además de la consulta de medios tradicionales en los entornos familiares; no obstante, encontramos algunos puntos destacables que pueden ser de gran relevancia en el ámbito nacional a propósito de la apropiación que los estudiantes hacen de la información, las redes y plataformas sociales en pro de su seguridad.
National and Universal in the Education System. The Process of Globalization and Transformations of Educational Systems
Authors: HOVHANNISYAN Hovhannes
Published: December 2024

In the education system of any nation, there are, to one degree or another, both universal and local, national tendencies and patterns.
It can also be noted that it is in national schools that, in the terminology of synergetic, those dissipative structures of educational technologies and methods of organizing education are formed and polished, which are subsequently mastered by other nations and countries, spread and standardized as the most productive means.
The article emphasizes the importance of implementing globalization processes not in opposition to or at the expense of national education systems, but in the spirit of their harmonious, mutual enrichment and influence.
It is indeed emphasized that one of the secrets of the viability and survival of the Armenian people is the awareness of the importance of school and the education system, traditions of harmonious combination of the national and universal.
The position is to put forward that in a globalizing world, it seems appropriate and promising to encourage such education systems that, while being national in form, comprise universal human values in content. Such strategy will play a significant role in increasing the effectiveness of the educational process, as well as reducing conflicts and developing cooperation between different countries and peoples.
Fallacies in Argumentation and Discoveries: Methodological Analysis
Authors: HOVHANNISYAN Hasmik , DJIDJIAN Robert
Published: December 2024

This article discusses and suggests solutions to a number of issues related to the problem of main causes of fallacies arising in the history of scientific discoveries like the role of “evident facts”, uncritical assumptions, erroneous preconceptions and “crazy ideas”. Special attention is given to particular cases of Aristotelian idea of the First Mover, Charles Darwin’s non-Darwinian principles advocated in many occasions on pages of Origin of Species, the mechanical explanation of the physical world by the nineteenth century science. The issue of “crazy ideas” is presented in its relation to the notion of “absurdity”. Authors of the article invite its readers to a well-known  fact of history of science that scientists can suggest incongruous concepts while the scientific community and wide circles of men of learning could accept these absurd concepts as a respectful and true theory for long centuries of whole epochs.
Discussions of the problems and their solutions in this article are undertaken in the light of the concept of meta-argumentation developed by authors of the article.
Assessing drought risk conditions through SPI and NDVI indices in Oued Kert watershed
Authors: Alioua Zahar Elkheir , Mezrhab Abdelhamid , Laaboudi Mohammed , Achebour Ali , Snaibi Wadii , Sahil Mohammed , Elyagoubi Said , Melhaoui Mohammed
Published: December 2024

The Oued Kert watershed in Morocco is essential for local biodiversity and agriculture, yet it faces significant challenges due to meteorological drought. This research addresses an urgent issue by aiming to understand the impacts of drought on vegetation, which is crucial for food security and water resource management. Despite previous studies on drought, there are significant gaps, including a lack of specific analyses on the seasonal effects of drought on vegetation in this under-researched region, as well as insufficient use of appropriate analytical tools to evaluate these relationships. We utilized the Standardized Precipitation Index (SPI) and the Normalized Difference Vegetation Index (NDVI) to analyze the relationship between precipitation and vegetation health. Our results reveal a very strong correlation between SPI and NDVI in spring (98%) and summer (97%), while correlations in winter and autumn are weaker (66% and 55%). These findings can guide policymakers in developing appropriate strategies and contribute to crop planning and land management. Furthermore, this study could serve as a foundation for awareness and education initiatives on the sustainable management of water and land resources, thereby enhancing the resilience of local ecosystems in the face of environmental challenges.
A simulation-based study on the energy efficiency of green façade retrofitting for different types of facades in rural China
Authors: Sun Qi , Utaberta Nangkula , Kiet Allen Lau Khin , Han Xiyao
Published: December 2024

As China’s urbanisation continues, the building area is expanding, of which the occupancy of rural residential buildings is also very large. However, most rural buildings have poor thermal performance. This paper analyses the energy-saving potential of green facades for rural buildings in China by simulating typical buildings with different types of facades in rural China. The simulation results show that indirect green façades can achieve good energy savings. Buildings with four types of facades: red brick, rubble, hollow brick, and concrete achieve energy savings of 18.39%, 17.85%, 14.47%, and 11.52%, respectively, after retrofitting with green facades.
Financial intermediation development model as a factor of growth of population welfare in post-Soviet countries
Authors: Turyan Karen
Published: December 2024

The economy of post-Soviet countries has its own specifics, including those related to the development of the financial system and the financial intermediation market. Based on the results of a study, the author has identified a problem associated with the lack of sound tools that could be used to improve the efficiency of the financial intermediary market. The main directions of such a process are mobilization of savings, distribution of financial assets, payment system, risk management and control over market agents involved in financial transactions. The digital or cyber-social approach proposed by the author involves the use of innovations in the financial market, expanding the accumulated pool of knowledge and increasing the intellectual capital of financial intermediaries, and the active use of information and communication networks to perform various financial transactions and provide financial services. The unique characteristics of financial intermediation development in former USSR countries are determined by the emerging type of economy, characteristic of many states, which causes an insufficient degree of development of traditional forms of financial intermediation, the use of specific tools, such as Islamic finance, and poor penetration of digital technologies into the economy.
Economic welfare in Mexican municipalities: A nonparametric analysis
Authors: Ayvar-Campos Francisco Javier , Giménez García Víctor M.
Published: December 2024

This study determines the efficiency and productivity of Mexico’s urban and rural municipalities in generating economic welfare between 1990 and 2020. It establishes the incidence of context and space on efficiency, using Data Envelopment Analysis, the Malmquist-Luenberger Metafrontier Productivity Index, and Nonparametric Regression. The results indicate that 4 of the 2456 municipalities analyzed were efficient, that productivity increased, and that context and space influenced efficiency. This highlights the need for policies that optimize resource utilization, enhance investment in education, stimulate local business development, encourage inter-municipal cooperation, reduce rural-urban disparities, and promote sustainability.
Policy effectiveness in empowering traditional shipping in Indonesia: Government grant vessel program
Authors: Winarno Winarno , Priadi Antoni Arif , Cahyadi Tri
Published: December 2024

Traditional shipping plays a crucial role in the national sea transportation system, serving inland areas, remote areas, and outer islands that are widely distributed throughout the country. However, there is still limited research on the problems of traditional shipping empowerment and its implementation. This research aims not only to analyze the obstacles encountered in empowering traditional shipping but also the implementation of the traditional shipping grant program. This study employed a quantitative descriptive approach, utilizing a likert scale, to analyze the issues that arise in the empowerment of traditional shipping. Additionally, for policy implementation analysis, the Hellmut-Wollmann policy analysis was used. The findings indicate that the most significant issues arise in the area of human resource development, such as a lack of competent teaching staff, insufficient short courses, complicated testing procedures, and the lack of crew certification. In the ex-ante stage, the variable of empowering traditional shipping transportation programs experienced the highest implementation rate. During the ongoing stage, the variable empowering traditional shipping services achieved the highest implementation score. And in the ex-post stage, traditional shipping services had the highest implementation score. This paper emphasizes the significance of collaboration and coordination among all levels of government, from the central to the local, in order to effectively implement the traditional shipping empowerment program. These findings also highlight the necessity of extending the traditional shipping grant program while making improvements in areas such as ship safety management regulations, the management and supply of traditional shipping terminals, the division of transportation types, and route determination policies.
The role of AI and new forms of artistic expression in shaping the art market
Authors: Józsa László , Balla Rita
Published: December 2024

The aim of our study is to provide information on how and to what extent professionals of art institutions in Hungary and Slovakia (contemporary galleries and museums) use artificial intelligence in their work processes. Our research focuses on the extent to which these institutions use artificial intelligence in the development of the institution’s operational strategy, or how they can embed the assumed usefulness of artificial intelligence in the operation of the institution, be it the creation of an exhibition, the textual processing of the professional life of an artist, or a about a tool that shapes the gallery’s marketing strategy. We conducted ten in-depth interviews in the two countries, the interviewees were selected using the snowball method. The interview took place among professionals and professionally credible artists who are actively active in contemporary fine art life. The results revealed that the use of artificial intelligence as a tool in the creative work processes is not a requirement in the field of culture, neither in Hungary nor in Slovakia. All the interviewees already had professional experience with AI, 90% of those interviewed would like to deepen their knowledge of the creative use methods of AI, e.g., by creating working groups in the workplace on an experimental basis. Based on our conclusions, we can say that artificial intelligence currently has no conscious strategic use in contemporary art institutions. It can be said that creative professionals are aware of the possibilities of using artificial intelligence in their own field of image, video, and text creation, but there is uncertainty on the part of creators and curators when it comes to copyright. The in-depth interviews provided source material for the compilation of a standardized set of questions for a larger survey of 300-500 people, proportional to the sample, so our presented results are partial results of a larger research.
Morphometric identification of mudskippers recorded from the Cox’s Bazar coast, Bay of Bengal, Bangladesh: Challenges and recommendations
Authors: Bhuyan Md. Simul , Islam Md. Tarikul , Mahadevan Gopalan , Siddiqui Abdullah Al Mamun , Peas Mehedi Hasan , Mojumder Istiak Ahamed
Published: December 2024

Mudskippers are amphibious fishes that can voluntarily leave the water and spend a considerable amount of time on the mudflats and are considered to have high ecological value in the mudflat environment. The present study was conducted in Cox’s Bazar coast to identify the mudskipper species. This study also points out the challenges in the field and provides possible recommendations. The mudskippers were collected from Rezu Khal, Inani, Patuartek, Imamer Dail, Monkhali, Shaplapur, Naf Jetty, Keari Ghat, and Shaporir Dwip during December 2023 to February 2024 by using cast net, thela jhal, scoop net and hand picking. Most of the samples were collected during low tide. A total of 15 mudskippers were recorded in this study and most of the species belong to the genus Periophthalmus (8 species) followed by Boleophthalmus (2 species), Periophthalmodon (2 species), Pseudapocryptes (1 species), Parapocryptes (1 species), and Apocryptodon (1 species). Boleophthalmus boddarti was found commonly distributed in all the stations, which is considered edible by a few coastal people and the Rohingya community. The size of this species is considerably bigger than the other recorded species and it can be farmed. Further, an extensive survey is needed to be undertaken in the other parts of Bangladesh coast to document more species and identify the species richness. It can be a possible component of the blue economy.
Vision-based experimental study of force estimation in the cable-stayed bridge’s cable model
Authors: Li Yanhao , Yussof Mustafasanie M. , Tan Xing , Yuan Shicai
Published: December 2024

In this paper, a vision-based measurement is proposed, so as to realize quick and convenient tests on the cable force of single-cable plane cable-stayed bridge. Firstly, laser is used to lay out the reference points, and pictures are taken by mobile phone or camera, gaining cable sag by serial image processing. The next step is to calculate the cable force by its relation with sag. According to laboratory test of cable force, the measuring error of cable force is within 3%, which meets the engineering precision requirements. This simple, efficient and low-risk method is easy to operate, and can solve the difficulty of marker installation during visual measurement.
Defects as risk factors in housing construction
Authors: Skorupka Dariusz , Pochybełko Karol
Published: December 2024

The article presents an analysis of defects in residential construction as key risk factors for the effectiveness of a construction investment. In a very competitive market, investors have to compete with each other with the organization of construction production and the quality of the product, which is a building structure. One of the basic criteria for evaluating the quality of building structures is the number and type of construction defects. Therefore, the analysis of the risk of such failures and statistical studies of the frequency and type of their occurrence were the crux of the research process presented in the article. An extensive and detailed theoretical analysis of the problem of defects in housing construction was supported by an empirical analysis. Based on the results of research on completed construction investments, the structure of the database was developed, and then a quantitative and objective analysis of defects in residential buildings was carried out. The whole is summarized with research conclusions and recommendations regarding the implementation of residential construction investments.
Influence of temperature on rheological properties of self-compacting mortars and concretes in rest state
Authors: Gołaszewski Jacek , Cygan Grzegorz
Published: December 2024

The rheological properties of fresh mortars and self-compacting concretes (SCC) at rest – the static yield value gs and the thixotropy factor AT – at temperatures from 10 to 30°C were investigated. The static yield value gs and the thixotropy factor AT of SCC depends on the temperature and the w/c ratio. Immediately after casting, the static yield value gs of the SCC is the higher the higher the temperature and/or w/c ratio are. Thixotropy factor AT of fresh SCC depends mainly on w/c ratio – the higher w/c ratio the lower AT is. The increase in temperature of SCC reduces thixotropy factor AT , but the effect is insignificant. During the 40 minutes that the SCC remain at rest, the static yield value gs increases and this increase is faster for mixes with a higher w/c ratio. Thixotropy factor AT of SCC left in rest first increases over time, but then, after just 20 to 40 minutes, begins to decrease. Temperature does not affect static yield value gs and thixotropy factor AT changes in time. The nature of the effect of temperature on the rheological properties of mortars and SCC is analogous. It was proven that model mortars can be used to predict the effect of temperature on the rheological properties of SCC both in the flow phase and at rest and to predict changes in these parameters over time. The implications of the temperature effect on the rheological properties of SCC in terms of formwork pressure were also discussed
Evaluation of different functionalized multi-walled carbon nanotubes (MWCNTs) modified asphalts
Authors: He Zhongming , Ou Jianjun , Xie Tangxin , Yang Fangfang , Li Yaqian
Published: December 2024

To improve the aging resistance and prolong the service life of asphalt pavement, this study utilized modified multi-walled carbon nanotubes (MWCNTs) functionalized with carboxyl (MWCNTs-COOH), hydroxyl (MWCNTs-OH), and amino (MWCNTs-NH2) groups. These nanotubes were incorporated into SBS-modified asphalt at a concentration of 1%. The study sought to examine the impact of MWCNTs and their functional groups on asphalt’s rheological and anti-aging characteristics, alongside exploring their modification mechanisms. The findings indicated that rheological tests showed that MWCNTs/SBS composite-modified asphalt, particularly MWCNTs-OH/SBS, exhibited remarkable resistance to hightemperature deformation, a crucial characteristic for asphalt performance in hot climates. Nevertheless, it is important to note that the addition of MWCNTs led to an increase in asphalt’s creep strength and creep rate, which could potentially reduce its resistance to low-temperature cracking. However, the covalent functionalization of MWCNTs mitigated these adverse effects on low-temperature performance. Moreover, the inclusion of MWCNTs in asphalt served as a barrier, impeding the penetration of oxygen molecules and ultraviolet radiation into the asphalt matrix. This proved to be an effective means of inhibiting the aging process, a critical factor in extending the service life of asphalt pavement. Among the different formulations of MWCNTs modified asphalt, the MWCNTs-OH/SBS composite-modified asphalt exhibited notably effective anti-aging properties. Both rheological and anti-aging evaluations demonstrated that hydroxyl functional groups played a pivotal role in enhancing performance, chiefly by fostering interactions with asphalt molecules.
Analysis of the limit states of a rib-and-block floor based on beams with steel truss
Authors: Musiał Michał , Grzymski Filip , Pazdan Maciej , Trapko Tomasz
Published: December 2024

From among the many technological solutions for floors in residential buildings and in small public buildings very often rib-and-block floor systems are selected. The main argument convincing project owners to choose such solutions are their clear advantages, mainly the uncomplicated construction technology, no need to use advanced tools and equipment and the low cost. The introduction of harmonized European guidelines in the form of the EN 15037 series of standards made it necessary to introduce changes in the designing and constructing of these commonly used floor systems, whereby their manufacturers had to update their offers. This paper discusses the requirements and the main changes introduced by the EN 15037 series of standards in comparison with the previous guidelines and general calculations of reinforced concrete structures according to Eurocodes. Analyses concerning bending and shear ultimate limit states and serviceability limit states are presented. Critical points in the design of rib-and-block floors are indicated and the results of exemplary calculations for a selected floor are presented. In addition, a comparative analysis concerning the difference in the consumption of reinforcing steel for a selected floor system designed according to respectively the current and previous guidelines is carried out and its results are discussed.
Introducing a new method for assessing short railway bridge conditions using vehicle onboard systems
Authors: Rakoczy Anna M. , Karwowski Wojciech , Płudowska-Zagrajek Monika , Pałyga Maciej
Published: December 2024

Railway bridges are critical in the transportation network and vital to the profitability of the industry. Maintaining the bridge condition to safety standards is a priority for all railroad owners. However, the accumulation of damage that is not visible during regular inspections may cause catastrophic failures. The recent railroad bridge collapse over the Yellowstone River caused a train carrying toxic materials to fall into the river. The question arises “Could we predict and prevent this bridge collapse?”. The railroad bridge’s dynamic response under the train traversed can enable the assessment of structural conditions and may reveal structural issues that are not visible during the visual inspection itself. The onboard vehicle-based system is a novel concept that allows an autonomous evaluation of the existing railway bridge structures and substructures. An onboard system provides observations for multiple bridges, as opposed to a structural health monitoring system that is capable of monitoring only a single bridge. In 2016 the potential use of existing onboard systems to detect weak bridge stringers and changes in pier elevations was proved by a set of tests performed in the Transportation Technology Center (TTC) in Colorado, USA under controlled conditions. Recently, the research expanded to evaluate bridges in service. Several short, open-deck, railway bridges on the Polish Railway were examined using track geometry cars. The data were analyzed to compare and observe the changes in bridge response. This paper provides a summary of the findings of the analyzed data and future steps for research implementation.
Analysis of the effect of concrete repair and self-healing due to corrosion using the impact-echo method
Authors: Rahita Aulia Chanief , Zaki Ahmad , Al-Mizan Muhammad Fahri , Rosyidi Sri Atmaja P.
Published: December 2024

Reinforced concrete is a primary component in the construction industry and is susceptible to damage from corrosion, fires, and natural disasters. Steel corrosion in concrete has become a serious global issue, resulting in significant economic losses. Dealing with existing concrete damage requires considerable time and cost, making innovation in repair methods essential. One of the repair methods employed is grouting with cement grout and jacketing. Innovative solutions have emerged in self-healing concrete, allowing concrete to repair small cracks autonomously. One self-healing approach involves using bacteria to seal cracks in concrete. Identifying damage caused by corrosion in reinforced concrete is crucial for implementing appropriate protective measures. Non-Destructive Testing (NDT) methods offer a way to detect damage without compromising the physical structure. NDT methods have been used for evaluating and monitoring steel corrosion in reinforced concrete, including the Impact-Echo (IE) method. The most important result of this study was that the peak frequency values obtained from Impact Echo (IE) testing on concrete before and after corrosion showed a shift towards lower values, indicating a decrease in concrete quality due to corrosion. It was observed that after the repair process, there was an increase in peak frequency values detected with Impact Echo on each specimen, indicating the effectiveness of the repair method. These results are significant as they provide insight into the impact of corrosion on concrete quality, the effectiveness of repair methods, the correlation between concrete quality and structural strength, and the potential for non-destructive testing impact-echo methods to monitor concrete conditions.
Seismic performance design of reinforced concrete structures with elastic self-resetting
Authors: Tang Mian , Luo Kaiwen
Published: December 2024

To improve the seismic performance of traditional reinforced concrete structures, this study proposes a self-resetting steel-concrete hybrid structure. The key force for resetting is obtained through the elastic deformation of prestressed reinforcement. The seismic energy is then dissipated in stages through the sliding friction between steel beam sections and column bases, thereby reducing structural damage. The results show that the calculation errors of the peak load and initial stiffness of the research framework model are small, within 10%. The actual values of the resetting capacity of the research specimens are highly consistent with its calculated value. At the maximum displacement for energy dissipation capacity, the calculated value of one specimen is 294.12 kN ∙ m, while the actual value is 295.18 kN ∙ m, indicating a high level of accuracy in the research framework’s calculations. When compared with traditional frame specimens, the research framework exhibits superior resetting capacity, stiffness, and energy dissipation capacity. This validates the superiority of the research method and demonstrates that the concrete structure has excellent seismic performance. Furthermore, the research method provides theoretical support and practical guidance for the application of the structural design in various engineering fields such as buildings, bridges, and tunnels.
The current use of the regenerative properties of platelet-rich-plasma in different medical conditions with particular emphasis on gynecology and obstetrics
Authors: Barwijuk Michał , Pankiewicz Katarzyna , Jakimiuk Artur J.
Published: December 2024

Platelet-rich-plasma (PRP) is a concentrate of plasma containing high levels of platelets and different growth factors, involved in various cellular and regenerative processes, i.a. wound healing and tissue regeneration. Currently, due to its regenerative properties, PRP is widely used in different medical conditions. This paper summarizes knowledge about types of PRP, its preparation and current possibilities of PRP treatment in many fields of medicine with a particular emphasis on gynecology and obstetrics.
Differential phase angle spectrum for liquid detection in functionalized surface roughness polymeric electrode
Authors: Gomez-Sanchez John Alexander , Bueno Luciano de Souza Ribero
Published: December 2024

The conductive polymeric electrodes using 3D printing are an innovative material development with the advantage of the flexibility of integrating isolated polymers with a higher electrical conductivity of carbon-based materials, generating new possibilities in environmental, healthcare, and food monitoring. Based on the morphology, geometric arrangement, and dielectric properties of the composites, the performance of the electrodes is improved. Structural designs are optimized to enhance functionalities such as adhesion, catalytic activity, and the reduction of interface energy. With these concepts, a functionalized carbon-based polymeric electrode was fabricated using 3D printing. The Differential Impedance Spectrum (DIS) was employed to analyze the response of functionalized electrodes to solutions of acetic acid and calcium chloride (CaCl2
). DIS data extract the differential phase angle and indicate the interactions between the functionalized surface with acetic acid and CaCl2
solutions, showing noticeable peaks in three zones: at lower frequencies (< 10 kHz), medium frequencies range of 10 kHz to 100 kHz, and higher frequencies (> 100 kHz). In the three cases analyzed, the CaCl2
solution presented the highest frequency compared with acetic acid. When the sensor was doubled functionalized, the peaks were shifted between the range of 220 kHz to 280 kHz. A conclusion is that the carbon-based polymer electrode not only reduces manufacturing costs but also enables faster functionalization to detect specific chemical compounds in liquids quickly and portable without the need for higher-level equipment. These electrodes could be applied to make measurements in aqueous media such as ponds, pools, lakes, rivers, and oceans to detect contaminants, as well as in human fluids to recognize metabolites in sweat, urine, saliva, and blood.
Low-cost 3D vision-based triangulation system for ultrasonic probe positioning
Authors: Cygan Szymon , Urban Mateusz , Czyżyk Anna , Żmigrodzki Jakub
Published: December 2024

Introduction: In ultrasonic imaging, such as echocardiography, accurately positioning the probe in relation to the patient’s body or an external coordinate system is typically done manually. However, when developing speckle-tracking methods for echocardiology, ensuring consistency in probe positioning is essential for reliable data interpretation. To address this challenge, we present a vision-based system and method for probe positioning in this study.

Materials and Methods: Our system comprises two cameras, a calibration frame with eight markers of known coordinates in the frames’ local coordinate system, and a probe holder with four markers. The calibration process involves image segmentation via region growing and extraction of the camera projection matrices. Subsequently, our positioning method also utilises marker segmentation, followed by estimating the markers’ positions using triangulation.

Results: To evaluate the system’s performance, we conducted tests using a validation plate with five coplanar circular markers. The distances between each pair of points were calculated, and their errors compared to the true distances were found to be within a maximum of 0.7 mm. This level of accuracy is comparable to ultrasonic imaging resolution and thus deemed sufficient for the intended purpose.

Conclusion: For those interested in replicating or modifying our methods, the supplementary material includes the complete design of the calibration frame and the Matlab code.
DESKRIPSI PENGETAHUAN IBU DALAM PEMBERIAN MAKANAN PENDAMPING ASI (MP-ASI) DENGAN MENGGUNAKAN METODE BABY LED WEANING (BLW) DI WILAYAH KERJA PUSKESMAS BULU TUBAN
Authors: Salestin Dinda Aulia Putri
Published: December 2024

Penerapan BLW di Indonesia masih menjadi pro dan kontra di kalangan masyarakat karena banyaknya permasalahan di Indonesia, seperti perbedaan budaya dan adat istiadat, serta kurangnya bukti ilmiah (penelitian). Tujuan dari penelitian ini adalah untuk mengetahui deskripsi pengetahuan ibu dalam pemberian MP-ASI dengan menggunakan metode BLW di Wilayah Kerja Puskesmas Bulu Tuban. Metode penelitian ini adalah penelitian kuantitatif dengan pendekatan cross sectional, pengambilan sampel menggunakan proportional stratified random sampling yaitu menggunakan subyek ibu yang memiliki anak usia 1-3 tahun sebanyak 86 responden. Instrument pengumpulan data menggunakan kuesioner. Penelitian dilaksanakan pada bulan Maret sampai April 2024. Hasil penelitian ini adalah pengetahuan ibu yang memiliki anak usia 1-3 tahun di Wilayah Kerja Puskesmas Bulu Tuban sebesar (47,7%) berpengetahuan cukup, usia yang paling banyak adalah ibu dengan usia 20-30 tahun sebanyak 60 responden (69,8%), Tingkat Pendidikan paling besar yaitu SMA sebanyak 48 responden (55,8%). Dan mayoritas ibu multipara sebanyak 54 responden (62,8%).
Два погребения Югомашевского могильника: к вопросу о взаимодействии гляденовской и мазунинской культур в контактной зоне
Authors: Красноперов Александр Анатольевич , Камалеев Эльвир Винерович
Published: December 2024

В статье публикуются комплексы двух погребений Югомашевского могильника в северной Башкирии. Датировка этих могил несколько затруднена, и может быть широко определена в пределах IV в., более вероятно 2-й его половины. Памятник традиционно относится к мазунинской культуре. Сверка коллекции Музея археологии и этнографии Института этнологических исследований УНЦ РАН для внесения в госкаталог выявила новые аспекты для культурной атрибуции. В рассматриваемых могилах найдены специфические маленькие высокие конические бляшки, которые не встречаются среди мазунинских материалов. Такая форма является специфической для гляденовских памятников. Сам некрополь располагается на северо-востоке ареала мазунинской культуры, в непосредственной близости к области южной группы памятников гляденовской культуры. Два погребения – Югомаш, пп.II/18 и II/23 – отражают процесс взаимодействия двух культурных групп к контактной зоне.
Биметаллический киммерийский меч их Южного Зауралья
Authors: Насретдинов Рамиль Ринатович , Султанов Рашит Ришатович , Федоров Виталий Кимович
Published: December 2024

В статье публикуется меч с железным клинком и бронзовой рукоятью, найденный в Республике Башкортостан возле города Баймак. Имеет длину 82 см, конец клинка отсутствует. Навершие грибовидное, перекрестье прямое. Является образцом киммерийского клинкового оружия с крестовидной рукоятью. Датируется концом IX – началом VIII вв. до н.э. Возможно, меч происходит из разрушенного захоронения, поскольку его клинок был согнут и на лезвии сохранились остатки ткани. Наибольшее количество подобных мечей найдено на территории Украинской лесостепи. Единичные образцы происходят с Северного Кавказа (Адыгея) и Среднего Поволжья (Татарстан). Вместе с редкими погребениями (могильники Елбулак-Тамак и Шатмантамак в Башкирском Предуралье) и единичными находками бронзовых киммерийских кинжалов в Зауралье, баймакский меч является свидетельством миграций на Южный Урал в начале эпохи раннего железа отдельных групп киммерийского населения с западных по отношению к Южному Уралу территорий.
"Fluid" Zu Witkowskiej jako poetycki model komunikacji społecznej
Authors: Artwich Anna
Published: December 2024

Przedmiotem artykułu jest analiza tomiku poetyckiego Fluid Zu Witkowskiej. Jej celem jest interpretacja wielowymiarowej opresji oraz niejednoznacznego charakteru funkcjonowania queerowych osób w społeczeństwie. Szczególnie ważne dla rozumienia wierszy Witkowskiej stają się reakcje afektalne i cielesne podmiotów/podmiotek. Analiza wybranych utworów Fluidu możliwa była dzięki rozpoznaniom m.in. Elizabeth Grosz, Moniki Glosowitz czy Moniki Świerkosz, których badania skupiają się kolejno na powiązaniach ciała z otoczeniem, afektach i relacjach przestrzennych podmiotów.
Rytm wiersza z różnych punktów słyszenia
Authors: Witold Sadowski
Published: December 2024

Systemy wersyfikacyjne trwają przez wieki, zachowując ten sam repertuar wyznaczników. Ale czy to oznacza, że publiczność literacka odbiera je zawsze w analogiczny sposób? Po krótkiej prezentacji przykładów z historii wiersza, artykuł skupia się na współczesnym europejskim wierszu litanijnym. Przedstawione zostają trzy sposoby podchodzenia poetów do tej konwencji, w których litanijny rytm 1) jest traktowany zgodnie z tradycją — jako narzędzie medytacji; 2) stanowi przedmiot nieporozumienia wokół jego założeń; 3) zostaje odzyskany w hermeneutycznej procedurze odnowionego rozumienia.
Jak i po co automatyzować analizę wersologiczną w polskich badaniach literackich?
Authors: Rykowska Aleksandra
Published: December 2024

Wersologia jest dziedziną o bogatej tradycji, jednak ostatnio niestety zapominaną w badaniach poetyckich. Program SylLab powstał, by wrócić do korzeni polskiej wersologii i połączyć tradycję z nowymi technologiami. Narzędzie jest oparte na sposobie analizy wiersza Kazimierza Wierzyńskiego Gdzie nie posieją mnie… wykonanej przez Marię Dłuską. Program automatycznie przeprowadza analizę wersologiczną i fonetyczną utworu. Narzędzie jest nie tylko szansą na poprawę stanu polskich badań wersologicznych, ale także może się przyczynić do analizy większej liczby wierszy, co mogłoby umożliwić opracowanie pierwszego korpusu polskiej poezji.