bluuebunny/crossref_metadata_2025 huggingface dataset:
A Conceptual Framework for Applying Ethical Principles of AI to Medical Practice
Authors: Jha Debesh , Durak Gorkem , Sharma Vanshali , Keles Elif , Cicek Vedat , Zhang Zheyuan , Srivastava Abhishek , Rauniyar Ashish , Hagos Desta Haileselassie , Tomar Nikhil Kumar , Miller Frank H. , Topcu Ahmet , Yazidi Anis , Håkegård Jan Erik , Bagci Ulas
Published: February 2025

Artificial Intelligence (AI) is reshaping healthcare through advancements in clinical decision support and diagnostic capabilities. While human expertise remains foundational to medical practice, AI-powered tools are increasingly matching or exceeding specialist-level performance across multiple domains, paving the way for a new era of democratized healthcare access. These systems promise to reduce disparities in care delivery across demographic, racial, and socioeconomic boundaries by providing high-quality diagnostic support at scale. As a result, advanced healthcare services can be affordable to all populations, irrespective of demographics, race, or socioeconomic background. The democratization of such AI tools can reduce the cost of care, optimize resource allocation, and improve the quality of care. In contrast to humans, AI can potentially uncover complex relationships in the data from a large set of inputs and generate new evidence-based knowledge in medicine. However, integrating AI into healthcare raises several ethical and philosophical concerns, such as bias, transparency, autonomy, responsibility, and accountability. In this study, we examine recent advances in AI-enabled medical image analysis, current regulatory frameworks, and emerging best practices for clinical integration. We analyze both technical and ethical challenges inherent in deploying AI systems across healthcare institutions, with particular attention to data privacy, algorithmic fairness, and system transparency. Furthermore, we propose practical solutions to address key challenges, including data scarcity, racial bias in training datasets, limited model interpretability, and systematic algorithmic biases. Finally, we outline a conceptual algorithm for responsible AI implementations and identify promising future research and development directions.
Effects of Joint Action Observation on Children’s Imitation
Authors: Rizvanović Nejra , Király Ildikó , Sebanz Natalie
Published: February 2025

Grasping others’ intentions from their actions is essential for learning, as it enhances the ability to identify collaborative acts and anticipate others’ actions, facilitating effective coordination toward shared goals. From a young age, children seem to recognize when others are working together based on their interactions and use this understanding to inform their own learning. Although much of early learning occurs in joint contexts, little attention has been devoted to understanding how children learn by participating in joint actions and by observing others acting together. Using a puzzle box paradigm, we tested 3–6-year-old children’s imitation of an inefficient performance following individual and joint demonstrations in which the inefficient performance did or did not involve bimanual or joint coordination. This allowed us to test whether the tendency to overimitate extends to joint actions and how action coordination modulates imitative behavior. We found that overimitation extends to joint actions, as indicated by similar rates of inefficient copying following individual and joint action demonstrations. Furthermore, our results suggest that action coordination did not play a significant role in modulating children’s tendency to overimitate. Taken together, the results of the study advance our understanding of how learning occurs in social interactions.
Techno-Economic Analysis of Increasing the Share of Renewable Energy Sources in Heat Generation Using the Example of a Medium-Sized City in Poland
Authors: Krawczyk Piotr , Badyda Krzysztof , Dzido Aleksandra
Published: February 2025

In many countries located in Central–Eastern Europe, there is a need for heating in the autumn and winter seasons. In Poland, this has been met over the years, mainly through the development of centralized heating systems. The heat sources in such systems are based on fossil fuels like coal or gas. New regulations and climate concerns are forcing a transformation of existing systems towards green energy. The research presents two scenarios of such a change. The first focuses on maintaining centralized heat sources but increases the share of renewables in the heat supply. This can be realized by weather-independent, high-power sources such as biomass boilers and/or high-temperature heat pumps (HP) such as sewage heat pumps or ground source HP. The second scenario changes the location of the heat sources to more dispersed locations so that the unit power can be lower. In this case, renewable heat sources can be used at favorable locations in the system. Among the sources included in this scenario are solar panels, photovoltaic panels, micro wind turbines, and ground source heat pumps with local heat storage. These are characterized by low energy density. Their dispersion in the urban space can contribute to the desired energy generation, which would be impossible to achieve in the centralized scenario. Furthermore, the transmission losses are lower in this case, so lower heating medium temperatures are required. The existing district heating network can be used as a buffer or heat storage, contributing to stable system operation. The article presents a comparative analysis of these solutions.
Fully Soft Switched Coupled Inductor-Based Semi Dual Active Half Bridge Converter with Voltage Match Control
Authors: Li Liting , Su Mei , Xiong Wenjing , Han Yu , Xu Guo
Published: February 2025

This article proposes a fully soft-switched coupled-inductor-based semi dual-active half-bridge (SDAHB) converter designed for wide voltage range and low power applications. The converter employs a negatively coupled inductor to link a boost-type half-bridge with a semi half-bridge, utilizing a single magnetic component. This approach addresses the issue of low power density often caused by multiple magnetic components, such as leakage inductor and transformer. Additionally, the proposed SDAHB converter includes only three active switches, making it cost-effective. To simplify control implementation, the converter operates under a voltage-matching condition using pulse width modulation plus phase shift (PPS) modulation. This also ensures full-range zero-voltage switching (ZVS) for all switches and zero-current switching (ZCS) for the diode. Finally, an experimental prototype is constructed, and the results confirm the validity of the theoretical analysis and design approach.
Collaborative Self-Standby Adjustment for Photovoltaics with Rotor Inertial Power Source Control Strategy in Weak Power Grids
Authors: Cao Kan , Xiong Haozhe , Ye Chang , Jiang Kezheng , Yu Hang , Wang Ding , Liu Jian
Published: February 2025

The energy crisis has accelerated the rapid development of photovoltaic resources. However, the integration of large-scale photovoltaic (PV) systems into the power grid has significantly reduced system inertia, posing significant challenges to grid frequency stability. To enhance the frequency response characteristics of grid-connected PV systems, this paper proposes a rotor inertial power source (RIPS) control strategy for coordinated adjustable self-standby PV systems. First, based on the P-V operating characteristics of a PV system, a control strategy for estimating the maximum power of the PV system and implementing variable step size voltage control is proposed, enabling self-standby control for PV systems to provide primary frequency control capability. Second, by analyzing the transient response of the virtual synchronous generator (VSG) and leveraging its rotor operating characteristics, a RIPS control strategy is introduced to extract rotor inertial power, which increases the system’s inertia. Third, by utilizing the inertial power provided by RIPS in coordination with self-standby PV systems for grid connection, the inertia of the PV grid-connected system is effectively increased, thereby equivalently enhancing the frequency stability of the PV grid connection. The simulation results validate the effectiveness of the proposed control method, providing new insights for the expansion of PV system integration into the grid.
Factors Influencing the Selection of a Physician for Dermatological Consultation in Saudi Arabia: A National Survey
Authors: Alshammarie Fawwaz Freih , Alenazi Abdullah Aziz , Alhamazani Yasmin Saleh , Almarzouk Lenah Hassan , Alduheim Mohammad Abdulkarim , Alahmadi Duaa Abdullah , Alshammari Kholah Fares , Alanazi Wael Saleh
Published: February 2025

Background: Dermatology in healthcare is changed by technological advancements, patient awareness, and developing healthcare needs. In Saudi Arabia, choosing a dermatologist is influenced by various factors, including patient satisfaction, digital technology use, and the physician’s characteristics and qualities. Purpose: The major aim of this research was to evaluate factors influencing patients’ choice of dermatologists in Saudi Arabia, including past experiences, reputation, social media influence, and access to care. Methods: A comprehensive national survey was conducted in Saudi Arabia. The research included 1038 participants using stratified sampling, predominantly from the 18–25 age group (67.1%). The distribution covered all regions of Saudi Arabia, with a larger portion from the Central and Western regions. The survey included quantitative and qualitative questions, assessing factors such as previous experiences with dermatologists, the importance of physician reputation, the role of digital platforms, and access to care. The data were analyzed using the Statistical Package for Social Studies (SPSS 22; IBM Corp., New York, NY, USA), with continuous variables expressed as mean ± standard deviation and categorical variables as percentages. Results: Our study highlighted a strong preference for dermatologists based on previous positive experiences (95.3%) and reputable dermatologists (95.2%). Factors like social media presence were less influential. Demographics matter, with younger and female participants favoring female doctors. The education level affects preference factors like ads, and the convenience of their location holds minimal sway. Recommendations from peers and healthcare professionals carry significant weight in the decision. Conclusions: Positive patient experiences and professional reputation suggest that these are the factors that affect patients’ selection of a dermatologist the most. The research findings indicated that while digital platforms are important for information dissemination, they play a minimal role in the actual selection process. The findings can guide dermatologists and healthcare policymakers in enhancing patient-centered care and adapting to evolving patient preferences in the digital age.
Applications of MOFs and Their Derivatives in Lithium–Oxygen Battery Cathodes: Development and Challenges
Authors: Ma Haitao , Luo Shaohua , Cong Jun , Yan Shengxue
Published: February 2025

Lithium–oxygen batteries have attracted considerable attention in recent years due to their high energy density and potential applications. However, the slow kinetics of the cathode reaction and the unstable products in lithium–oxygen batteries have limited their practical applications. Metal–organic frameworks (MOFs) and their derivatives have emerged as a novel class of functional materials, thus becoming ideal candidates for the cathode of lithium–oxygen batteries. This is due to their high specific surface area, structural tunability, and abundant active sites. This paper presents a review of the research progress made in the field of MOFs and their derivatives in the cathode of lithium–oxygen batteries. It provides a summary of the design and synthesis strategies employed in the development of MOF-based catalysts, with a particular focus on the application of primary MOFs materials, MOF-derived materials and MOF composite materials in Li-O2 batteries. Additionally, it analyses the catalytic mechanism of MOFs and their derivatives in the ORR/OER. The comprehensive analysis demonstrates that MOFs and their derivatives are ideal candidates for the cathodes of lithium–oxygen batteries due to their high specific surface area, structural tunability, and abundant active sites. However, the electrical conductivity of MOFs is usually low and needs to be enhanced by composites or derivative materials. This paper reviews the research progress on MOFs and their derivatives in lithium–oxygen battery cathodes, focuses on the design and synthesis strategies of MOF-based catalysts, and discusses their catalytic mechanisms in the ORR/OER.
Correction: Lu et al. Host Volatiles Potentially Drive Two Evolutionarily Related Weevils to Select Different Grains. Insects 2024, 15, 300
Authors: Lu Shaohua , Zhang Lingfang , Lu Yujie , Chen Mingshun , Wang Zhengyan
Published: February 2025

In the original publication [...]
Giant Ovarian Tumors in Young Women: Diagnostic and Treatment Challenges—A Report of Two Cases and Narrative Review of the Recent Literature
Authors: Melnyk Mariia , Starczewski Andrzej , Nawrocka-Rutkowska Jolanta , Gorzko Amalia , Melnyk Bohdan , Szydłowska Iwona
Published: February 2025

Background: Ovarian cysts (OCs) are a common gynecological issue, with approximately 20% of women developing at least one pelvic mass during their lifetime. The incidence of large ovarian cysts has decreased substantially due to regular gynecological screenings. However, giant ovarian tumors still continue to pose significant diagnostic and therapeutic challenges. Methods: We report two cases of giant ovarian tumors (GOTs). Case 1 involves a 17-year-old woman who presented with a 2-year history of gradual abdominal enlargement, accompanied by repeated attempts at weight reduction. A computed tomography (CT) scan revealed a large tumor. It was excised by laparotomy. Histopathologic examination revealed ovarian cystadenofibroma. Case 2 presents a 25-year-old female who had a 3-month history of progressive, severe abdominal distension and weight gain, accompanied by nausea and diarrhea. CT imaging revealed a giant cystic neoplasm. The cyst was removed by laparotomy. The histopathological study revealed the intestinal–endocervical mucinous borderline tumor. In this context, we performed a narrative literature review, including cases of giant ovarian tumors in young women over the past five years. We centered on diagnoses and management in these cases. Results: The surgical management of both cases was successful, with complete tumor excision and favorable postoperative outcomes. hese cases underscore the importance of including giant ovarian tumors in the differential diagnosis of young women presenting with progressive abdominal distension. The narrative review analyzed 39 relevant publications on the management of giant ovarian tumors in young women. Conclusions: It is important to highlight a possible risk of malignancy, and risk of fatal complications during the surgical removal of giant ovarian cysts (GOCs). To ensure safer and more successful outcomes, multidisciplinary care should be provided. The early detection and diagnosis of OCs are challenging, as patients may not seek medical attention until the tumor has become large enough to cause symptoms. It is crucial to raise awareness among family doctors and other primary care providers (PCPs) regarding OCs to ensure optimal diagnostic and therapeutic management and improve the outcomes for patients with OCs.
Understanding the Future of Money: The Struggle Between Government Control and Decentralization
Authors: Tommerdahl Jodi
Published: February 2025

This article offers a clear and approachable introduction to the evolving landscape of money and the frictions developing between traditional government control and decentralized finance (DeFi). Tailored for readers with a basic awareness of cryptocurrency but limited familiarity with its broader implications, the article demystifies DeFi by explaining its core concepts including blockchain, Centralized Bank Digital Currencies (CBDCs), and the historical role of government regulation of money through central banking. Against this backdrop, it examines the transformative potential of DeFi, emphasizing the growing tension between the centralized authority of governments and the decentralized ideals driving this new financial model. While governments seek to maintain stability and control, individuals increasingly gravitate toward the more affordable, efficient, and inclusive solutions promised by DeFi. Designed to empower readers with a better grasp of the forces shaping the future of finance, this article underscores the importance of understanding the delicate interplay between governmental oversight and decentralized innovation. As the digital economy expands, this dynamic struggle will influence not only economic policies but also personal financial choices and access to resources.
Synthesis, Photo-Physical Properties, and Electroluminescence Characteristics of Iridium Phosphorescent Materials Based on Different β-Diketonate Ancillary Ligands
Authors: Chang Qiaowen , Zhang Ke , Yan Caixian , Xie Liming , Yi Yuanqiuqiang , Su Wenming , Liu Weiping
Published: February 2025

Organic light-emitting diodes (OLEDs) based on phosphorescent materials are among the most promising technologies for displays and lightings. For red-emitting heteroleptic iridium complexes (HICs), vast and major research has been focused on the design and synthesis of cyclometalated ligands, while relatively little attention has been given to ancillary ligands which also play important roles in manipulating the optoelectronic and electroluminescent properties of HICs. Seven deep red-emitting HICs were designed and synthesized by systematically modifying the alkyl groups in β-diketone-type ancillary ligands. These HICs exhibited similar physical and optoelectronic properties, with OLED devices based on these materials achieving consistent emission peaks at 624 nm and CIE coordinates of (0.68, 0.32). Among the synthesized HICs, Ir(dmippiq)₂(dmeacac), featuring 3,7-dimethyl-4,6-nonanedione as the ancillary ligand, demonstrated the best OLED performance, achieving a champion external quantum efficiency (EQE) of 18.26%. This result highlights that engineering the alkyl groups in β-diketone ancillary ligands can significantly enhance device performance.
Research on Image Motion Compensation Technology in Vehicle-Mounted Photoelectric Servo System
Authors: Zhang Mingyang , Teng Yunjie , Fu Jingyi , Liu Tongyu
Published: February 2025

In order to improve the imaging quality of the vehicle photoelectric servo system, image motion compensation under the vehicle platform is studied. Based on the principle of image motion compensation, combined with coordinate system transformation and velocity vector decomposition, the angular velocity compensation formula of a fast mirror in dynamic scanning imaging of a vehicle photoelectric servo system is obtained. A discrete sliding mode control algorithm based on the Kalman filter is proposed. The proposed algorithm and the discrete sliding mode control algorithm are simulated and compared to verify the system control performance. The simulation results show that the designed algorithm improves control accuracy by 76.3%, reduces overshoot by 75%, and improves response time by 31.25% compared with the discrete sliding mode control algorithm. The experimental platform is built to verify the experimental results. The experimental results show that the speed stability accuracy of the fast mirror is better than 19 μrad, which is 74.37% higher than that of the traditional control scheme. This study provides a reference for the follow-up study of image motion compensation in a vehicle photoelectric servo system.
Adaptive GCN and Bi-GRU-Based Dual Branch for Motor Imagery EEG Decoding
Authors: Wu Yelan , Cao Pugang , Xu Meng , Zhang Yue , Lian Xiaoqin , Yu Chongchong
Published: February 2025

Decoding motor imagery electroencephalography (MI-EEG) signals presents significant challenges due to the difficulty in capturing the complex functional connectivity between channels and the temporal dependencies of EEG signals across different periods. These challenges are exacerbated by the low spatial resolution and high signal redundancy inherent in EEG signals, which traditional linear models struggle to address. To overcome these issues, we propose a novel dual-branch framework that integrates an adaptive graph convolutional network (Adaptive GCN) and bidirectional gated recurrent units (Bi-GRUs) to enhance the decoding performance of MI-EEG signals by effectively modeling both channel correlations and temporal dependencies. The Chebyshev Type II filter decomposes the signal into multiple sub-bands giving the model frequency domain insights. The Adaptive GCN, specifically designed for the MI-EEG context, captures functional connectivity between channels more effectively than conventional GCN models, enabling accurate spatial–spectral feature extraction. Furthermore, combining Bi-GRU and Multi-Head Attention (MHA) captures the temporal dependencies across different time segments to extract deep time–spectral features. Finally, feature fusion is performed to generate the final prediction results. Experimental results demonstrate that our method achieves an average classification accuracy of 80.38% on the BCI-IV Dataset 2a and 87.49% on the BCI-I Dataset 3a, outperforming other state-of-the-art decoding approaches. This approach lays the foundation for future exploration of personalized and adaptive brain–computer interface (BCI) systems.
On the Perturbed Friedmann Equations in Newtonian Gauge
Authors: de Haro Jaume , Elizalde Emilio , Pan Supriya
Published: February 2025

Based on Newtonian mechanics, in this article, we present a heuristic derivation of the Friedmann equations, providing an intuitive foundation for these fundamental relations in cosmology. Additionally, using the first law of thermodynamics and Euler’s equation, we derive a set of equations that, at linear order, coincide with those obtained from the conservation of the stress-energy tensor in general relativity. This approach not only highlights the consistency between Newtonian and relativistic frameworks in certain limits, but also serves as a pedagogical bridge, offering insights into the physical principles underlying the dynamics of the universe.
A Comparison of Conserved Features in the Human Coronavirus Family Shows That Studies of Viruses Less Pathogenic than SARS-CoV-2, Such as HCoV-OC43, Are Good Model Systems for Elucidating Basic Mechanisms of Infection and Replication in Standard Laboratories
Authors: Heffner Audrey L. , Rouault Tracey A.
Published: February 2025

In 2021, at the height of the COVID-19 pandemic, coronavirus research spiked, with over 83,000 original research articles related to the word “coronavirus” added to the online resource PubMed. Just 2 years later, in 2023, only 30,900 original research articles related to the word “coronavirus” were added. While, irrefutably, the funding of coronavirus research drastically decreased, a possible explanation for the decrease in interest in coronavirus research is that projects on SARS-CoV-2, the causative agent of COVID-19, halted due to the challenge of establishing a good cellular or animal model system. Most laboratories do not have the capabilities to culture SARS-CoV-2 ‘in house’ as this requires a Biosafety Level (BSL) 3 laboratory. Until recently, BSL 2 laboratory research on endemic coronaviruses was arduous due to the low cytopathic effect in isolated cell culture infection models and the lack of means to quantify viral loads. The purpose of this review article is to compare the human coronaviruses and provide an assessment of the latest techniques that use the endemic coronaviruses—HCoV-229E, HCoV-OC43, HCoV-NL63, and HCoV-HKU1—as lower-biosafety-risk models for the more pathogenic coronaviruses—SARS-CoV-2, SARS-CoV, and MERS-CoV.
The Efficacy and Safety of Simultaneous Vaccination with Polysaccharide Conjugate Vaccines Against Pneumococcal (13-Valent Vaccine) and Haemophilus influenzae Type b Infections in Children with Juvenile Idiopathic Arthritis Without Systemic Manifestations: A Prospective Cohort Study
Authors: Alexeeva Ekaterina , Dvoryakovskaya Tatyana , Fetisova Anna , Kriulin Ivan , Krekhova Elizaveta , Kabanova Anna , Labinov Vladimir , Labinova Elizaveta , Kostik Mikhail
Published: February 2025

Background: Immunosuppressive therapy (methotrexate and biological agents) for juvenile idiopathic arthritis (JIA) is associated with an increased risk of severe infections, higher infection rates, treatment interruptions, failure to achieve disease remission, and recurrent disease flares. Our study aimed to evaluate the safety and efficacy of simultaneous immunization with 13-valent polysaccharide conjugate vaccines (PCV13) against S. pneumoniae (SP) and Hemophilus influanzae type b infections (HibV) in children with JIA without systemic manifestations. Methods: A total of 371 non-systemic JIA patients who received 13PCV and HibV were included in this prospective cohort study. In every patient, we evaluated clinical, laboratory, anti-SP, and anti-Hib IgG antibodies before vaccination, three weeks after, and six months after, and all adverse events (AEs) were collected during the study. The number and duration of acute respiratory infection (ARI) episodes and requirements for antibacterial treatment and AE six months before and after the baseline were collected. Results: The levels of the Ig G anti-SP and anti-Hib antibodies increased in the 3 weeks after vaccination; then, anti-SP antibodies slightly decreased and anti-Hib antibodies remained increased during the whole study, as well as in a part of the patients with a protective titer. During the study, there were no patients with significant flares, and the main JIA outcomes gradually decreased during the trial. The number of patients with uveitis remained equal, as well as the part of the patients with active, low-active, and inactive uveitis. There was no significant rise in the hs-CRP or S100 protein after the vaccination. Previous or ongoing treatment with non-biological (p = 0.072) and biological (p = 0.019) disease-modified anti-rheumatic drugs affected the Hib and did not affect the anti-SP protective titer at the end of the study. Within 6 months following vaccination, the number of ARI episodes (p < 0.001) and the number of courses of antibacterial treatment (p < 0.0001) decreased twice. The median duration of ARI episodes decreased four times (p < 0.0001). Mild AEs (injection site reactions and short-term fever episodes) were found in 58 (15.6%) patients with JIA, and 1 patient (0.2%) developed an SAE. Conclusions: Simultaneous vaccination against pneumococcal and Hib infections reduces the frequency and duration of episodes of ARI, as well as the number of courses of antibacterial drugs, and does not lead to significant JIA flares. The number of reported AEs is consistent with what was expected.
Impact of Land Use Pattern and Heavy Metals on Lake Water Quality in Vidarbha and Marathwada Region, India
Authors: Diwate Pranaya , Lavhale Prasanna , Singh Suraj Kumar , Kanga Shruti , Kumar Pankaj , Meraj Gowhar , Debnath Jatan , Sahariah Dhrubajyoti , Bhuyan Md. Simul , Chand Kesar
Published: February 2025

Lakes are critical resources that support the ecological balance and provide essential services for human and environmental well-being. However, their quality is being increasingly threatened by both natural and anthropogenic processes. This study aimed to assess the water quality and the presence of heavy metals in 15 lakes in the Vidarbha and Marathwada regions of Maharashtra, India. To understand the extent of pollution and its sources, the physico-chemical parameters were analyzed which included pH, turbidity, total hardness, orthophosphate, residual free chlorine, chloride, fluoride, and nitrate, as well as heavy metals such as iron, lead, zinc, copper, arsenic, chromium, manganese, cadmium, and nickel. The results revealed significant pollution in several lakes, with the Lonar Lake showing a pH value of 12, exceeding the Bureau of Indian Standards’ (BIS) limit. The Lonar Lake also showed elevated levels of fluoride having a value of 2 mg/L, nitrate showing a value of 45 mg/L, and orthophosphate showing a concentration up to 2 mg/L. The Rishi Lake had higher concentrations of nickel having a value of 0.2 mg/L and manganese having a value of 0.7 mg/L, crossing permissible BIS limits. The Rishi Lake and the Salim Ali Lake exhibited higher copper levels than other lakes. Cadmium was detected in most of the lakes ranging from values of 0.1 mg/L to 0.4 mg/L, exceeding BIS limits. The highest turbidity levels were observed in Rishi Lake and Salim Ali Lake at 25 NTU. The total hardness value observed in the Kharpudi Lake was 400 mg/L, which is highest among all the lakes under study. The spatial analysis, which utilized remote sensing and GIS techniques, including Sentinel-2 multispectral imagery for land use and land cover mapping and Digital Elevation Model (DEM) for watershed delineation, provided insights into the topography and drainage patterns affecting these lakes. The findings emphasize the urgent need for targeted management strategies to mitigate pollution and protect these vital freshwater ecosystems, with broader implications for public health and ecological sustainability in regions reliant on these water resources.
THE INFLUENCE OF BLUFF BODY SHAPE AND FEEDBACK CHANNELS ON THE ACCURACY AND SENSITIVITY OF VORTEX FLOWMETERS
Authors: Grakovich Fedor
Published: February 2025

Vortex flowmeters are widely used for measuring liquid and gas flows due to their high accuracy and reliability. Their operation is based on the generation of vortices formed by a bluff body (BB), the parameters of which significantly affect the metrological characteristics of the device. This study investigates the influence of the BB shape and the presence of a feedback channel (FBC) in its design on the vortex formation processes. The research was conducted using numerical modeling of hydrodynamic processes via the finite element method in the Comsol Multiphysics environment. Cylindrical and trapezoidal BB shapes, both with and without FBC, were analyzed at flow velocities of 0.11, 0.27, and 0.44 m/s. The results showed that incorporating an FBC increases the vortex shedding frequency, enhancing the flowmeter's sensitivity, and reduces the amplitude of the forces acting on the BB, thereby improving the device's operational stability. The findings of this study hold practical value for the design of vortex flowmeters, contributing to improved accuracy, durability, and operational reliability.
SELECTING THE MESH FOR MODELLING THE COMBUSTION OF A STATIONARY SOLID FUEL BED IN ANSYS FLUENT
Authors: Ashraf Ahmed
Published: February 2025

The choice of model parameters and calculation grid for the model of combustion of a fixed layer of solid fuel is considered. The models included in the calculation and their main parameters are presented. The comparison of the obtained modelling results using different meshes is carried out. The adequacy of combustion modelling was checked by comparing the averaged composition of gases and their temperature in the output window with the values obtained by calculation of fuel combustion; the averaged SO2 and NO content in the output window with the results of emission calculations and combustion analysis along the length of current lines. It is found that the multi-area grid used for all areas provides more adequate results, in contrast to the combination of a tetrahedral grid for the gas part and a Cartesian grid for the surfaces, but is characterised by a higher, three times, calculation time. The combinations of the multi-area grid for the gas part and tetrahedron grid for the surfaces and the combination of the tetrahedron grid for the gas part and Cartesian grid for the surfaces had the same quality and comparable results, as well as the same calculation time, but the first variant contains 20% fewer elements and provides better combustion results on individual current lines. As a result, the multi-zone grid for the gas part and the tetrahedral grid for the surfaces were chosen for modelling as providing adequate results with shorter calculation time.
STUDY OF THE INFLUENCE OF DETERMINING FACTORS ON THE HEAT TRANSFER COEFFICIENT UNDER FORCED CONVECTION CONDITIONS USING A PROGRAMMED ALGORITHM IN VISUAL BASIC FOR APPLICATIONS
Authors: Smirnov Dmitry
Published: February 2025

When designing thermal power systems, engineering calculations of equipment use the convective heat transfer coefficient to further determine heat flows. The value of this coefficient depends on many factors and physical quantities, such as heat capacity; pressure; density; phase state; heat or coolant flow mode; characteristics of the contacted surface, i.e. sizes, shapes, wall roughness; coefficients of kinematic and dynamic viscosity, etc. To calculate heat flows, heat transfer coefficient and analyze its dependence on the above values, an algorithm for step-by-step automatic calculation of parameters of interest to the user was developed in Excel based on the Visual Basic for Applications programming language using existing engineering techniques. In engineering techniques, only a few quantities are mainly used: surface and fluid temperatures; fluid velocity and defining geometric characteristics of the surface in contact with a gaseous or liquid substance. The program provides the following corrections: temperature, for hydrodynamic stabilization of the flow in the initial section, for the narrowing of the flow in the narrowest section of the channel, for the angle of attack of the oncoming flow and for the relative position of the pipes in the bundle. As a fluid, you can choose air, water, transformer oil, MS-20 and MK oils, liquid ammonia and flue gases.
Gestão de pessoas e projetos: a interseção entre a diretoria de projetos da PMPR e o desenvolvimento dos policiais
Authors: Silva Ismael Veiga da
Published: February 2025

Este artigo aborda a importância da Gestão de Pessoas e Projetos no contexto da Diretoria de Projetos (DPROJ) da Polícia Militar do Paraná (PMPR), em especial destaque à intersecção das duas áreas como contribuição para a capacitação e desenvolvimento dos policiais militares de forma contínua e o aprimoramento das operações da corporação. A evolução da gestão de projetos intramuros adapta a corporação às modernas demandas da segurança pública, onde ser eficiente não depende somente da atividade operacional, mas também do desenvolvimento e capacitação do efetivo envolvido em todo o processo. A gestão estratégica de pessoas age diretamente na eficácia das ações, através do preparo, motivação e qualidade do efetivo e a DPROJ deve desempenhar papel central neste processo visando apoiar a Diretoria de Pessoal da PMPR (DP) na busca de soluções inovadoras para as demandas da PMPR. A pesquisa, com base em fontes bibliográficas e normativas, analisa como práticas de gestão de pessoas podem influenciar a capacitação, motivação e o desempenho dos servidores públicos, e como essas práticas contribuem para a eficácia da Polícia Militar no cumprimento de suas funções de segurança pública. Ao integrar esses dois vieses à estratégia organizacional a PMPR toma vanguarda nos desafios da violência urbana, demandas tecnológicas e aproxima-se da comunidade a que serve. O estudo conclui que a abordagem estratégica, o desenvolvimento pessoal e a gestão eficiente de projetos garante a excelência sustentável no atendimento à comunidade e promove uma melhor segurança pública.
Uso excessivo de telas na infância e os transtornos do neurodesenvolvimento: existe correlação?
Authors: Santos Tânia Barbosa , Tavares Caroline Rocha , Roberto Camila Apolinário , Zogaib Diego Veneziani , Freitas Edna Brigida Secco de , Travalini Isabela Granato , Kyosen Sandra Obikawa
Published: February 2025

Introdução: O avanço das mídias digitais se tornou algo marcante no cotidiano das crianças e adolescentes, mas o seu uso exagero tem se tornado preocupante para a saúde das crianças e seus consequentes impactos no desenvolvimento infantil. Objetivo: identificar se há correlação significativa entre o tempo gasto em dispositivos com telas e os transtornos do neurodesenvolvimento em crianças. Metodologia: Revisão de literatura do tipo integrativa. Utilizou-se os descritores “Screen Time” AND “Child Development” AND “Neurodevelopmental Disorders” para busca nas bases de dados PubMed/MEDLINE, Biblioteca Virtual em Saúde (BVS), Scopus e Web of Science. Seguindo os critérios de elegibilidade, chegou-se ao total de 7 artigos incluídos. Resultados e Discussão: Os resultados das nossas pesquisas sugerem uma correlação entre o tempo de telas com o atraso do neurodesenvolvimento infantil, como problemas de socialização, atenção, atraso de fala e linguagem, transtornos de aprendizagem além de maiores chances estatísticas de diagnóstico de TEA. Conclusão: Evidências mostram uma correlação entre o uso excessivo de telas e o neurodesenvolvimento infantil, variando por faixa etária. Crianças mais novas podem enfrentar problemas de socialização e aprendizagem, enquanto adolescentes apresentam padrões diferentes. A pesquisa é preliminar e destaca a necessidade de estudos adicionais para entender melhor esses efeitos.
Cirurgia robótica em situações de urgência e emergência: avanços, desafios e perspectivas
Authors: Alvarenga Henrique Laurente , Sarkis Larissa Mendonça de Araújo , Muniz Matheus Bortolini Lima , Mendes Cláudia Lara Santana , III Henrique de Almeida Fraga
Published: February 2025

A adoção de procedimentos cirúrgicos robóticos (PCR) em contextos de urgência e emergência tem aumentado significativamente diante dos benefícios observados, como redução da dor pós-operatória, menor taxa de complicações e recuperação mais rápida. Embora tradicionalmente aplicada a cenários eletivos, a cirurgia robótica mostra-se viável em pacientes hemodinamicamente estáveis, permitindo maior precisão e ergonomia ao cirurgião. Pesquisas recentes destacam que a carência de feedback tátil ainda representa um obstáculo, impulsionando inovações tecnológicas voltadas à incorporação de sensores de força, piezoelétricos ou ópticos. Além disso, plataformas avançadas, como a da Vinci Xi, têm superado limitações anteriores, reduzindo o tempo operatório e melhorando a segurança. Entretanto, desafios persistem: custos elevados, necessidade de equipes treinadas, disponibilidade restrita em períodos noturnos e impacto ambiental significativo. A experiência de centros como a Ohio State University demonstra que a implementação cuidadosa, ancorada em protocolos padronizados e colaboração multidisciplinar, pode viabilizar a cirurgia robótica em regime integral. Este artigo revisa as principais evidências sobre o uso de sistemas robóticos em emergências abdominais e outras subespecialidades, discutindo avanços, aplicações e limitações. A adoção crescente da telemedicina e da telecirurgia, impulsionada por redes 5G, sinaliza novas perspectivas para expandir a robótica a centros menores, tornando-a uma ferramenta cada vez acessível.
Relação da trissonomia do triplo X com o TEA em criança de 2 anos em Bom Despacho/MG
Authors: Guedes Elen Angela Moura , Costa Esther Lage , Fernandes Fernanda da Conceição , Silva Heberth Andrade , Silva Hévylin Caroline Fernandes
Published: February 2025

Este estudo descreve o caso de uma criança do sexo feminino diagnosticada com Síndrome do Triplo X e Transtorno do Espectro Autista (TEA). A gestação ocorreu com complicações, culminando em parto na 36ª semana, após indicação médica devido a vasa prévia e inserção do cordão umbilical. Observou-se baixa ingesta alimentar inicial, necessitando de acompanhamento nutricional intensivo. Ao longo dos primeiros meses de vida, surgiram sinais de atraso no desenvolvimento e comportamentos atípicos, como falta de interação e sensibilidade a estímulos sensoriais, o que levou a mãe a buscar avaliação especializada. O diagnóstico de TEA foi inicialmente levantado, porém, uma segunda neuropediatra solicitou exames genéticos e observações clínicas adicionais que culminaram na descoberta da trissomia do cromossomo X (47,XXX). Essa condição está associada a características fenotípicas variáveis e, no caso descrito, contribuiu para o quadro autista. O tratamento multidisciplinar, incluindo equoterapia, fonoaudiologia, natação e intervenções terapêuticas específicas, trouxe melhorias significativas na interação social e no desenvolvimento da criança. O uso de Risperidona auxiliou no controle de alguns sintomas comportamentais. O caso evidencia a importância de exames genéticos em diagnósticos pouco estudados, bem como o papel essencial da intervenção precoce no aprimoramento da qualidade de vida de crianças com trissomias e TEA.
Escarlatina: uma visão ampla sobre etiologia, clínica, tratamento e impactos na saúde pública
Authors: Filho Fábio Braga Soares , Gonçalves Lucas Gueller da Silva , Godinho João Thales Azevedo , Neves Gustavo Bravim , Peruchi Miguel Licinio Holanda
Published: February 2025

Considerando o ressurgimento de surtos de escarlatina, especialmente em crianças, e sua relevância na saúde pública, este trabalho objetiva revisar aspectos essenciais dessa doença, incluindo sua etiologia, manifestações clínicas, diagnóstico, tratamento e implicações epidemiológicas. Para tanto, procede-se a uma revisão integrativa da literatura médica, com a análise de artigos selecionados na base MedLine, utilizando descritores como "Scarlet Fever", "Epidemiology", "Children", "Treatment", "Prevention" e "Complications". A revisão resultou em 7 artigos selecionados, com foco no impacto da escarlatina em crianças, estratégias de diagnóstico e tratamentos atuais. Observou-se que, apesar dos avanços terapêuticos, a escarlatina continua a representar um desafio devido aos surtos recorrentes e a possibilidade de complicações graves, como febre reumática e glomerulonefrite pós-estreptocócica. Conclui-se que a vigilância epidemiológica contínua, o aprimoramento dos métodos diagnósticos e o tratamento precoce são fundamentais para reduzir a morbimortalidade associada à doença, além de ressaltar a importância das políticas públicas de prevenção e controle.
Pengaruh Penerapan Green Accounting Terhadap Tingkat Profitabilitas Perusahaan (Studi Pada Sektor Pertambangan yang terdaftar di Bursa Efek Indonesia Tahun 2021-2023)
Authors: Elvaretta Dissa , Maulina Vira , Febriani Tika Arizona , Rissi Dita Maretha
Published: February 2025

Industri pertambangan telah lama menjadi pilar utama bagi perekonomian banyak negara, tetapi persaingan yang ketat mendorong perusahaan-perusahaan tersebut untuk memaksimalkan sumber daya mereka. Namun, aktivitas pertambangan seringkali menimbulkan dampak bagi lingkungan yang menjadi perhatian oleh banyak pihak, dimana mereka memiliki kekhawatiran bahwa perusahaan hanya akan fokus pada keuntungan tanpa memperhatikan dampaknya terhadap lingkungan sekitar. Oleh karena itu, perusahaan kini mulai menerapkan praktik bisnis yang ramah lingkungan, melalui penggunaan konsep Green Accounting atau akuntansi lingkungan. Penelitian ini bertujuan untuk mengetahui pengaruh green accounting terhadap profitabilitas perusahaan pada sektor pertambagan yang terdaftar di Bursa Efek Indonesia (BEI) periode 2021-2023. Jenis penelitian ini merupakan penelitian kuantitatif. Adapun sampel pada penelitian ini yaitu perusahaan sektor pertambangan yang diambil dengan teknik purposive sampling sehingga diperoleh 39 sampel yang memenuhi kriteria selama 3 tahun. Variabel dependen adalah profitabilitas menggunakan ROE (Return on Equity), sedangkan variabel independen yaitu green accounting dengan menggunakan skala nominal (1-5 dari peringkat PROPER). Analisis data dilakukan dengan menggunakan analisis deskriptif, uji asumsi klasik, analisis regresi linear, sederhana serta uji hipotesis dengan SPSS 25.0. Hasil penelitian menunjukkan bahwa Green Accounting berpengaruh positif dan signifikan terhadap profitabilitas.
El desafío de los videojuegos a las formas de enunciación de lo social en las formaciones sociales contemporáneas. Un caso
Authors: Vito Paredes Jaime Patricio
Published: February 2025

La historia de los videojuegos importa a la historiografía entre otras razones porque está ligada a una transformación más amplia del concepto de sociedad y de lo social que caracterizará a la época actual. En este estudio se analizan los efectos de este problema en la representación historiográfica y de qué manera al pensar lo social ya no sólo interconectado con lo natural sino también diferenciado entre artefactos culturales complejos y confundido entre estos, va perdiendo su centralidad exclusivamente humana. De este modo son diversas las corrientes y los autores que, desde la filosofía, la sociología y la antropología actual han replanteado la relación entre la cultura y la naturaleza y entre la cultura y la tecnología reinstalando con nuevas orientaciones la importancia de una nueva epistemología y de una nueva ontología para dar cuenta de la complejidad de lo real: Ilustraremos esta problemática con la experiencia de los videojuegos en Morelia (México) y Valparaíso (Chile). Nuestra reflexión apunta a pensar especialmente a la historiografía y al modo como eventualmente desde sus conceptos y modelos teóricos va transformando el contenido de la ya clásica definición de la historiografía como historia social.
Política y emociones
Authors: Bastard Juan Pablo
Published: February 2025

Este trabajo se centra en la intersección emoción-identidad-política a partir de las representaciones y las apelaciones a la felicidad en los discursos de los trabajadores peronistas, específicamente centrado en la correspondencia establecida entre estos y Juan Domingo Perón, por medio de la secretaría de asuntos técnicos de la nación entre 1951 y 1952.
El movimiento político peronista se caracterizó por la utilización de los más diversos dispositivos del lenguaje para la diseminación de las novedades de gobierno. El sistema de correspondencias privadas de los trabajadores con Juan y Eva Perón configuró un canal sumamente original para el pedido y obtención de mejoras sociales, económicas, de educación, etc. El sistema de correspondencia continuó incluso hasta la campaña iniciada en 1951, en vísperas del Segundo Plan Quinquenal. En las características específicas del lenguaje utilizado por el peronismo se erigieron vinculaciones tanto políticas como emocionales.
Régimen político y formas de gobierno en Ecuador (1989-2022)
Authors: Rosero Delgado Gabriela Alexandra
Published: February 2025

El presente artículo pretende contribuir al debate acerca del régimen político contemporáneo y las interpretaciones sobre la democracia en Ecuador. Para ello, se cotejan las diferentes teorías de subclasificación del régimen político democrático y se propone una particular para el caso ecuatoriano, en una temporalidad histórica entre 1989 hasta el 2022, donde varios presidentes gobernaron y cuyos rasgos de acceso y ejercicio de poder marcarían formas de gobierno particulares. Se trata de clasificar y caracterizar a trece gobiernos del país durante cuarenta años de democracia cuya política gubernamental ha de catalogarse entre lo corporativista, elitista, populista y nacionalista; basada en cuatro aspectos fundamentales: patrones de gobierno, características de los actores políticos, estrategias políticas y gubernamentales, e instituciones públicas. Un aporte de elementos a la política comparada, modelos de democracia y cambios políticos.
SAÍN, M. (2023). Ciudad de pobres corazones. Estado, crimen y violencia narco en Rosario
Authors: Scocco Marianela
Published: February 2025

Reseña de SAÍN, M. (2023). Ciudad de pobres corazones. Estado, crimen y violencia narco en Rosario. Rosario: Prohistoria.