bluuebunny/crossref_metadata_2025 huggingface dataset:
Synergistic Impact of Active Case Detection and Early Hospitalization for Controlling the Spread of Yellow Fever Outbreak in Nigeria: An Epidemiological Modeling and Optimal Control Analysis
Authors: Alsowait Nawaf L. , Al-Shomrani Mohammed M. , Abdulrashid Ismail , Musa Salihu S.
Published: December 2024

Capturing the factors influencing yellow fever (YF) outbreaks is essential for effective public health interventions, especially in regions like Nigeria, where the disease poses significant health risks. This study explores the synergistic effects of active case detection (ACD) and early hospitalization on controlling YF transmission dynamics. We develop a dynamic model that integrates vaccination, active case detection, and hospitalization to enhance our understanding of disease spread and inform prevention strategies. Our methodology encompasses mechanistic dynamic modeling, optimal control analysis, parameter estimation, model fitting, and sensitivity analyses to study YF transmission dynamics, ensuring the robustness of control measures. We employ advanced mathematical techniques, including next-generation matrix methods, to accurately compute the reproduction number and assess outbreak transmissibility. Rigorous qualitative analysis of the model reveals two equilibria: disease-free and endemic, demonstrating global asymptotic stability and its impact on overall YF transmission dynamics, significantly affecting control and prevention mechanisms. Furthermore, through sensitivity analysis, we identify crucial parameters of the model that require urgent attention for more effective YF control. Moreover, our results highlight the critical roles of ACD and early hospitalization in reducing YF transmission. These insights provide a foundation for informed decision making and resource allocation in epidemic control efforts, ultimately contributing to the enhancement of public health strategies aimed at mitigating the impact of YF outbreaks.
Deep Drawability of Al-Mg Alloys Produced by Twin Roll Continuous Casting Method: Investigation of Microstructure and Mechanical Properties
Authors: Dündar Koray , Altuncu Ekrem , Birbaşar Onur
Published: December 2024

This study explores the development of Al-Mg alloy sheets manufactured through the Twin Roll Continuous Casting (TRC) technique, with the goal of enhancing their mechanical properties via thermomechanical processing. TRC is a cost-effective and efficient method for producing thin sheets directly from molten metal, and this work focuses on the deep drawability of AA5182, AA5754, and AA5052 alloys, widely used in automotive, packaging, and aerospace applications. Improving deep drawability is crucial for meeting the stringent requirements of these industries. The alloys were designed according to EN 573-3 standards, and sheet castings were carried out at both laboratory and industrial scales. Microstructure evolution was analyzed at the as-cast and final thicknesses using optical microscopy. The sheets underwent cold rolling to a thickness of 1 mm, followed by final annealing, and their mechanical properties—including yield strength, tensile strength, elongation, and anisotropy—were evaluated. The deep drawability of the sheets was assessed using Erichsen cupping tests and earing mechanisms. To further understand failure mechanisms, fracture surface morphologies were examined using scanning electron microscopy (SEM), while energy-dispersive X-ray spectroscopy (EDS) was performed to analyze inclusions on fractured surfaces. The findings highlight the effectiveness of the TRC technique in producing high-performance Al-Mg sheets with mechanical properties comparable to or exceeding those of conventionally processed sheets. This study provides valuable insights into the optimization of alloy design and manufacturing methods, laying the groundwork for future advancements in TRC technology.
Relationship Between Fracture Fractal and Mechanical Properties of 5083 Aluminum Alloy Sheet Prepared by Alternate Ring-Groove Pressing and Torsion
Authors: Zhang Chunhui , Wang Yu , Wang Mingxin , Li Wenhao , Zhang Chunxiang , Luo Junting
Published: December 2024

In this study, the tensile fracture morphology of a 5083 aluminum alloy sheet prepared by alternate ring-groove pressing torsion and torsional flattening at room temperature (ARPT-TF-R) under different numbers of torsional flattening passes was analyzed. The box dimension method was used to calculate the fractal dimension, and formulas for the quantitative relationships between the tensile properties and Vickers hardness of 5083 aluminum alloy sheet under different process conditions and the fractal dimension were established. The results indicated that the fracture mode of the sheet prepared by one pass was microporous aggregation fracture, and the number of large-sized dimples was small. The plate prepared by two passes had a greater number of micropores, and the dimple size was relatively small. The fractal dimension of the aluminum alloy sheet prepared by ARPT-TF-R at room temperature was 1.77–1.84. As the number of torsional flattening passes increased, the yield strength, tensile strength, Vickers hardness, and fractal dimension of the aluminum alloy sheet increased.
Phenotypic and Genotypic Detection of Hypervirulent Klebsiella pneumoniae Isolated from Hospital-Acquired Infections
Authors: Taha Marwa S. , Elkolaly Reham M. , Elhendawy Mohammed , Elatrozy Hytham , Amer Asmaa Fawzy , Helal Rehab Abd El Fattah , Salem Hanan , El feky Yomna G. , Harkan Ahmed , Mashaal Raghda Gabr , Allam Alzahraa A. , Oraiby Amira E. , Abdeen Nashwa S. M. , Bahey Marwa Gamal
Published: December 2024

Hypervirulent Klebsiella pneumoniae is a highly pathogenic variant of Klebsiella pneumonae, which represents a global public health issue because it is very virulent and spreads easily. The objectives of this study were to assess the predominance of hvKp among health care-associated infections in intensive care units of Tanta University Hospital and to compare hvKp with classical K. pneumoniae (cKp) in terms of antibiotic resistance, virulence, and molecular features. The study included 300 patients suffering from HAIs from different ICUs of Tanta University Hospitals. K. pneumoniae isolates were identified and subjected to string testing and antibiotic susceptibility testing, and the tissue culture assay for biofilm formation and polymerase chain reaction (PCR) tests were performed for the identification of capsular genes (K1, K2, K57) and virulence genes (rmpA, rmpA2, iuc A). Fifty-seven K. pneumonaie isolates were isolated. A total of 21 (36.8%) of them were hvKp and 36 (63.15%) were cKp. Significantly higher antibiotic resistance was detected in the cKp group. There was a significant difference between biofilm formation between cKp and hvKp isolates (p < 0.004*). iucA, rmpA2, and K1 genes were significantly associated with hvKp. The string test shows 100% sensitivity and negative predictive value for the detection of hvKp. Consequently, using the string test alone for the screening of hvKp is required. However, combining aerobactin-positive with hypermucoviscous isolates while screening for hvKp is crucial.
Histological Dissection of Fusarium-Banana Interaction Using a GFP-Tagged Subtropical Race 4 Strain of Fusarium oxysporum f. sp. cubense on Banana Cultivars with Differing Levels of Resistance
Authors: Chen Andrew , Chou Ting-Yan , Chen Yi , Fallatah Sumayyah M. A. , Anderson Jay , Sun Jiaman , Cosgrove Harry , Gao Siyuan , Ferguson Brett J. , Soper Amelie , Gardiner Donald M. , Aitken Elizabeth A. B.
Published: December 2024

Fusarium wilt, caused by Fusarium oxysporum f. sp. cubense (Foc), poses a significant threat to global banana production. This study used a GFP-tagged subtropical race 4 strain of Foc (GFP-Foc-STR4) to trace the pathogen’s movement in different banana cultivars. These include a race 4 resistant cultivar FHIA25 and the Cavendish somaclone ‘GCTCV119’, as well as susceptible cultivars including ‘Lady Finger’, ‘FHIA02’, and ‘Williams’ Cavendish. GFP localization revealed that GFP-Foc-STR4 was able to infect all tested cultivars, moving from the roots to the rhizome and aerial parts of the plant. Tyloses formation in root and rhizome vasculature, visualised with GFP autofluorescence and confirmed by scanning electron microscopy, was found to restrict Foc within the xylem vessels, slowing its spread but not fully preventing infection. This containment mechanism contributes to the host tolerance of ‘FHIA25’ and ‘GCTCV119’, though it does not confer complete immunity. The use of the fluorescently tagged Foc strain provides valuable insight into the infection process, and supports efforts in the integrated management of Fusarium wilt of banana.
Unlocking the Potential of Metagenomics with the PacBio High-Fidelity Sequencing Technology
Authors: Han Yanhua , He Jinling , Li Minghui , Peng Yunjuan , Jiang Hui , Zhao Jiangchao , Li Ying , Deng Feilong
Published: December 2024

Traditional methods for studying microbial communities have been limited due to difficulties in culturing and sequencing all microbial species. Recent advances in third-generation sequencing technologies, particularly PacBio’s high-fidelity (HiFi) sequencing, have significantly advanced metagenomics by providing accurate long-read sequences. This review explores the role of HiFi sequencing in overcoming the limitations of previous sequencing methods, including high error rates and fragmented assemblies. We discuss the benefits and applications of HiFi sequencing across various environments, such as the human gut and soil, which provides broader context for further exploration. Key studies are discussed to highlight HiFi sequencing’s ability to recover complete and coherent microbial genomes from complex microbiomes, showcasing its superior accuracy and continuity compared to other sequencing technologies. Additionally, we explore the potential applications of HiFi sequencing in quantitative microbial analysis, as well as the detection of single nucleotide variations (SNVs) and structural variations (SVs). PacBio HiFi sequencing is establishing a new benchmark in metagenomics, with the potential to significantly enhance our understanding of microbial ecology and drive forward advancements in both environmental and clinical applications.
Spin–Phonon Relaxation Dynamics from a Conical Intersection of Trapped Rydberg Ions
Authors: Chaudhary Manish , Nath Rejish , Li Weibin
Published: December 2024

Non-adiabatic processes near conical intersections are rooted in the stronger coupling between electronic and nuclear degrees of freedom. Using a system of two trapped Rydberg ions, their high polarizability and strong dipolar interactions allow to form a conical intersection, where dynamics takes place on a microsecond time scale. Rydberg lifetimes are typically from a few to tens of microseconds, which could affect the conical dynamics. We study the effect of the finite lifetime of the Rydberg state on the vibronic dynamics around the conical intersection via analyzing the master equation. Through mean field and numerical calculations, damping dynamics are found in both the phonon populations and electronic states depending on the initial states. It is found that oscillatory vibronic dynamics can be seen clearly within the Rydberg lifetime, permitting to observe the conical effect in the trapped Rydberg ion system.
New Carrageenan/2-Dimethyl Aminoethyl Methacrylate/Gelatin/ZnO Nanocomposite as a Localized Drug Delivery System with Synergistic Biomedical Applications
Authors: Ageeli Abeer A. , Mohamed Sahera F.
Published: December 2024

In recent years, the development of multifunctional hydrogels has gained significant attention due to their potential in various biomedical applications, including antimicrobial, antioxidant, and anticancer therapies. By integrating biocompatible polymers and nanoparticles, these hydrogels can achieve enhanced activity and targeted therapeutic effects. In this study, carrageenan/2-dimethyl aminoethyl methacrylate/gelatin (CAR/DEMA/Gelt) composite hydrogel was synthesized using microwave radiation specifically for its efficiency in enhancing cross-linking and promoting uniform nanoparticle dispersion within the matrix. Zinc oxide (ZnO) nanoparticles were incorporated into the hydrogel to form the (CAR/DEMA/Gelt/ZnO) nanocomposite. The hydrogels were characterized using FT-IR, FE-SEM, XRD, TGA, and EDX, confirming successful cross-linking and structural integrity. The nanocomposite hydrogel exhibited more enhanced antimicrobial activity than the composite hydrogel against Gram-positive Staphylococcus aureus (S. aureus) and Bacillus subtilis (B. subtilis), with inhibition zones of 15 mm and 16 mm, respectively, while in case of the Gram-negative bacteria, Klebsiella pneumoniae (K. pneumoniae) and Escherichia coli (E. coli), the inhibition zones were 29 mm and 19 mm, respectively. In addition to the unicellular fungi, Candida albicans (C. albicans), the inhibition zone was 19 mm. Moreover, the nanocomposite showed anti-inflammatory activity comparable to those of Indomethacin and antioxidant activity, with an impressive IC50 value of 33.3 ± 0.05 µg/mL. In vitro cytotoxicity assays revealed significant anticancer activity. Against the MCF-7 breast cancer cell line, the CAR/DEMA/Gelt/ZnO nanocomposite showed 72.5 ± 0.02% cell viability, which decreased to 30.8 ± 0.01% after loading doxorubicin (DOX). Similarly, against the HepG2 liver cancer cell line, the free nanocomposite displayed 59.9 ± 0.006% cell viability, which depleted to 29.9 ± 0.005% when DOX was uploaded. This CAR/DEMA/Gelt/ZnO nanocomposite hydrogel demonstrates strong potential as a multifunctional platform for targeted biomedical applications, particularly in cancer therapy.
Numerical Simulation Study on Reverse Source Tracing for Heating Pipeline Network Leaks Based on Adjoint Equations
Authors: Wang Jie , Zhu Yue , Zou Songyu , Xue Shuai , Chen Le , Hou Weilong , Xin Shengwei , Li Jinglan , Liu Zhongyan
Published: December 2024

In order to identify the leak source in complex heating pipeline networks, a timely and effective simulation of the leakage process was conducted. The open-source computational fluid dynamics software OpenFOAM 5.0 was combined with the PISO algorithm to simulate the pressure during the leakage in water supply networks, transforming the reverse source tracing problem into the solution of an adjoint equation. The validation of the transient adjoint equation for single-phase flow was completed through simulation, and the pressure wave change graph at the moment of the network leakage was solved, which was consistent with the experimental results. Using the open-source finite element analysis software OpenFOAM 5.0, the positioning accuracy of pipeline leak points can be controlled within the range from 92% to 96%. Based on the pressure wave change graph, the position of the leak source in the complex network was determined using the reverse source tracing method combined with the second correlation theory. The results show that the calculation speed of the PISO algorithm combined with the adjoint equation is significantly better than that of the individual SIMPLE and PISO algorithms, thereby proving the superiority of the adjoint method.
A Study on the Identification of Cracks in Mine Subsidence Based on YOLOv8n Improvement
Authors: Zhang Lei , Li Xiwei , Hao Shangkai , Yan Qianru , Wang Jiayuan , Wang Meng
Published: December 2024

Ground cracks resulting from coal mining subsidence can pose significant risks to coal mine safety, production, and the surrounding ecological environment. The use of drone technology coupled with deep learning holds practical value for accurately identifying ground cracks in mining areas. This study introduces an enhanced target detection algorithm based on YOLOv8n for analyzing ground cracks in aerial images captured by unmanned aerial vehicles (UAVs) dealing with small targets and widely distributed in shrubland. The C2f module of the backbone network is improved by incorporating deformable convolution (DCN), enhancing the model’s ability to adapt to detected object shapes, focus on small targets, and reduce irrelevant background information. Subsequently, the global attention mechanism (GAM) is integrated into the neck network to minimize feature information loss during training. Finally, the wise IOU (WIOU) loss function replaces the complete IOU (CIOU) loss function to improve the model’s generalizability. Experimental results demonstrate that the algorithm enhanced in this study exhibits improvements in precision (P), recall (R), and mean average precision (mAP@0.5) of 3.5%, 4.8%, and 5.1%, respectively, compared to the original YOLOv8n model. Furthermore, compared to other prevalent algorithms, the enhanced algorithm notably reduces model parameters, floating point operations per second (FLOPs), and model size while maintaining high detection accuracy. In conclusion, the enhanced YOLOv8n-based algorithm offers practical benefits for detecting cracks in mining subsidence areas.
Multi-Objective Optimization in Industry 5.0: Human-Centric AI Integration for Sustainable and Intelligent Manufacturing
Authors: Chen Shu-Chuan , Chen Hsien-Ming , Chen Han-Kwang , Li Chieh-Lan
Published: December 2024

The shift from Industry 4.0 to Industry 5.0 represents a significant evolution toward sustainable, human-centric manufacturing. This paper explores how advanced multi-objective optimization techniques can integrate Artificial Intelligence (AI) with human insights to enhance both sustainability and customization in manufacturing. We investigate specific optimization methods, including genetic algorithms (GAs), Particle Swarm Optimization (PSO), and reinforcement learning (RL), which are tailored to balance efficiency, waste reduction, and carbon footprint. Our proposed framework enables human creativity to interact with AI-driven processes, embedding human input into a computational structure that adapts dynamically to operational goals. By linking optimization directly to environmental impacts, such as reducing waste, energy consumption, and carbon emissions, this study establishes a pathway toward environmentally sustainable production. This research fills existing gaps by offering a detailed, practical model that harmonizes theoretical insights with applications in personalized manufacturing environments. In this regard, it contributes to the ongoing development of Industry 5.0, emphasizing how AI and human collaboration can foster intelligent, adaptable, and sustainable manufacturing systems.
Nonparametric Testing for Information Asymmetry in the Mortgage Servicing Market
Authors: Jedidi Helmi , Dionne Georges
Published: December 2024

Our objective is to test for evidence of information asymmetry in the mortgage servicing market. Does the sale of mortgage servicing rights (MSR) by the initial lender to a second servicing institution unveil any residual asymmetric information? We are the first to analyze the originator’s selling choice of MSR. We use a large sample of U.S. mortgages that were securitized through the private-label channel during the period of January 2000 to December 2013 (more than 5 million observations). We propose a new nonparametric instrumental variable testing procedure to account for potential endogeneity. For robustness, we present parametric analyses to corroborate our results using instrumental variables. Our empirical results provide strong support for the presence of second-stage asymmetric information in the mortgage servicing market during the period of analysis and before the risk retention reform of 2014.
Impact of a Three-Month Training Break on Swimming Performance in Athletes with Intellectual Disability
Authors: Kyriakidou Glykeria , Tsalis George , Evaggelinou Christina
Published: December 2024

This study aimed to ascertain whether there were any differences in anthropometrics, heart rate, and swimming performance parameters in athletes with intellectual disabilities (ID) before and after a three-month training break. A total of 21 athletes participated in the study, comprising 16 males and 5 females, with a mean age of 28.3 ± 8.7 years. All participants had ID, and six of them had Down syndrome. The study participants were classified as S14 athletes from a local swimming club. All participants had a minimum of four years of swimming experience and attended two to three one-hour sessions per week for eight consecutive months. All athletes completed two trials of 25 m freestyle swimming, one at the end of a training session and the other at the beginning of a new session. The measurements included weight, body mass index (BMI), handgrip strength (HGS), heart rate (pre- and post-trial), performance (T25), stroke count (SC), stroke length (SL), stroke rate, and the SWOLF efficiency index. The results demonstrated statistically significant elevations in weight (80.2 ± 16.1 to 81.7 ± 15.9), BMI (26.8 ± 5.5 to 27.2 ± 5.5), T25 (33.1 ± 17.1 to 35.6 ± 18), SC (19.3 ± 6.1 to 20.7 ± 7.2), and SWOLF (52.4 ± 22.0 to 56.3 ± 25.2) and a reduction in SL (1.39 ± 0.48 to 1.27 ± 0.42). However, no significant differences were observed in the remaining parameters. Significant correlations were found for body weight, BMI, HGS, and SWOLF with T25 throughout the study. It was concluded that individuals with ID experienced a decline in 25 m swimming performance due to technical rather than physiological factors after three months of detraining.
Research on Propagation Characteristics of Fracture Grouting in Clay Formation
Authors: Fan Rong , Chen Tielin , Li Man , Wei Xueda
Published: December 2024

Splitting grouting is a highly effective technique for reinforcing tunnels and underground structures, ensuring their operational stability and facilitating long-term maintenance. It has been widely adopted in the prevention and remediation of geological hazards. However, the theoretical research on the diffusion mechanisms of split grouting lags behind its practical applications. This study addresses several key scientific challenges in understanding the diffusion behavior of split grouting. By integrating experimental design, numerical simulations, and theoretical analysis, we conduct a systematic investigation into the diffusion process and vein morphology of split grouting in both homogeneous and heterogeneous formations. We first employed a self-developed two-dimensional grouting test system to perform diffusion experiments on cohesive strata, focusing on the influence of various factors such as grout density, water/cement ratio, soil consistency, and fracture characteristics. The results provide insights into the diffusion patterns, morphology, soil pressure distribution, and surface uplift behavior of the grout veins. Subsequently, a numerical simulation program, developed in-house, based on the finite element method (FEM) and the volume of fluid (VOF) approach, was employed to model the entire process of fracturing grouting within clay strata. The experimental and numerical results indicate that grout vein diffusion in layered soil follows a Y-shaped pattern with an inclined deflection. In uniform strata, the surface uplift curve displays both symmetrical and asymmetrical “convex” elevations, while in heterogeneous soft and hard strata, the uplift is characterized by distinct “convex” deformations. Finally, based on these findings and the principles of contact mechanics, we analyze the underlying mechanisms. The results suggest that weak contact zones undergo tensile cracking and horizontal deflection prior to the formation of grout veins. Additionally, local stress rotations in the soil can induce tilting and deflection. The theoretical insights derived from this study provide valuable guidance for practical engineering applications.
The Low-Cost Mechanism of a Defined Path Guide Slot-Based Passive Solar Tracker Intended for Developing Countries
Authors: Pérez-Gudiño José Luis , Gómez-Guzmán Marco Antonio , García-Valdez Chayanne , Carrillo-Serrano Roberto Valentín , Pérez-Soto Gerardo Israel , Rodríguez-Reséndiz Juvenal
Published: December 2024

Solar trackers represent a significant advancement in enhancing the efficiency of solar energy collection. This study describes the development and implementation of a passive solar tracker featuring a single horizontal axis of rotation and an innovative guide slot mechanism. The tracker is designed to be used with solar radiation-capturing devices. The guide slot mechanism is specifically engineered for a designated date, location, and period to follow the solar trajectory accurately. A contact follower moves along the guide slot, which drives a tracker disk to rotate by the solar trajectory. The mechanism is activated by the movement of a liquid container attached to a spring, thereby storing potential energy. The container releases the liquid through a mechanical valve that regulates the container’s movement, while the guide slot mechanism converts this movement into controlled rotational motion, which is transferred to a mobile structure mounting the solar panel. Notably, the majority of materials utilized in this construction are recycled. Furthermore, the solar tracker proposed in this work is designed to be operable by individuals with limited prior knowledge on the topic, emphasizing the primary contribution of this study: its potential to revolutionize energy collection in developing countries and marginalized urban areas. No similar systems are found upon comparison with existing models in the literature. Experiments conducted with a static solar panel and the same panel integrated into the passive solar tracker revealed a 30.87% improvement in energy collection efficiency over static solar panels.
Efficacy of athletes’ rehabilitation (on the exam - ple of psychological rehabilitation)
Authors:   Private Educational Institution «Medsi College of Medical Competencies», Fadeeva A. I. , Zhernov Yu. V. ,   Research Institute of Human Ecology and Environmental Hygiene named after A. N. Sysin, FSBI Centre for Strategic Planning of the Federal Medical and Biological Agency, Moscow, Russian Federation
Published: December 2024

Sports injury is a common occurrence in athletes’ lives, disrupting their normal
functioning and training regimen, and compromising their athletic identity. Coping with cognitive
and emotional stress following injury is essential for the athlete to recover and return
to baseline. This review examines current works on this topic.
APLIKASI MONITORING KESEHATAN DENGAN MEMANFAATKAN SMARTWATCH BERBASIS ANDROID
Authors: Reza Zulfian Fachru , Suryana Taryana
Published: December 2024

Kesehatan merupakan salah satu aspek yang sangat penting di dalam hidup kita. Karena dengan tubuh yang sehat, itu menjadi modal utama bagi kita untuk menjalani berbagai aktivitas sehari-hari dengan tanpa adanya kendala. Karena itulah menjaga kesehatan tubuh merupakan hal yang harus selalu kita upayakan. Terlebih lagi saat pandemi Covid-19 belakangan ini, kita diharuskan untuk selalu menjaga kesehatan agar terhindar dari Covid-19. Salah satu upaya yang bisa kita lakukan untuk menjaga kesehatan adalah dengan memantau kesehatan vital, seperti detak jantung dan tingkat saturasi oksigen dalam darah. Tujuan dari penelitian ini adalah untuk membangun sebuah aplikasi yang dapat membantu orang-orang dalam memantau kesehatan, khususnya untuk memantau detak jantung dan nilai saturasi oksigen dalam darah dan juga memiliki fitur untuk memprediksi kemungkinan adanya penyakit jantung. Penelitian ini menggunakan metode waterfall dalam pengembangan aplikasinya. Penelitian ini diharapkan dapat membantu orang-orang sebagai upaya untuk menjaga kesehatan. Aplikasi ini juga dapat membantu untuk memprediksi kemungkinan adanya penyakit jantung. Oleh karena itu, dapat disimpulkan bahwa pengembangan aplikasi ini dapat membantu orang-orang dalam memantau kesehatannya dan juga memberikan informasi penanganan apabila terdapat kondisi kesehatan yang berada diluar normal..
PEMBANGUNAN APLIKASI DIAGNOSIS PENYAKIT RINGWORM MENGGUNAKAN IMAGE RECOGNITION BERBASIS ANDROID
Authors: Ridwan Billy Muhammad , Hardyanto Chrismikha
Published: December 2024

Penyakit kulit adalah masalah kesehatan yang sering dihadapi oleh penduduk Indonesia. Penyakit Kulit yang sering terjadi di Indonesia salah satunya ringworm. Ringworm umumnya menyerang area kulit yang tidak memiliki rambut, seperti wajah, leher, tubuh, dan lengan. Tujuan dari penelitian ini adalah untuk membangun aplikasi diagnosis penyakit ringworm menggunakan image recognition yang dapat membantu masyarakat dalam mendiagnosis penyakit ringworm terhadap bercak merah pada kulit dan membantu masyarakat untuk berkonsultasi dengan dokter kulit tentang penyakit ringworm. Aplikasi ini menggunakan model tensorflow dan dikembangkan menggunakan framework flutter dengan bahasa pemrograman dart, aplikasi ini juga menggunakan firebase fire store untuk peyimpanan data. Metode pembangunan perangkat lunak yang digunakan berupa metode waterfall. Berdasarkan hasil pengujian alpha menggunakan metode black- box, dapat disimpulkan bahwa aplikasi yang dibangun telah memenuhi syarat dan sudah bekerja mendekati sesuai dengan kebutuhan fungsionalnya. Sedangkan berdasarkan hasil pengujian beta menggunakan metode kuesioner yang diberikan kepada 15 responden dengan perhitungan skala likert, diperoleh persentase untuk pertanyaan sesuai dengan tujuan penelitian yang diberikan mendapat 82%. Sehingga dapat disimpulkan bahwa aplikasi yang dibangun telah mendekati tujuan yang diinginkan.
TRANSFER KEILMUAN PEMBUATAN KURSI RODA LISTRIK ADAPTIVE KEPADA INSTRUKTUR DAN SISWA DISABILITAS DI SUB VOKASIONAL SLBN-A CITEUREUP KOTA CIMAHI
Authors: Supriyadi Tata , Setiadi Budi , Prasetyo Prasetyo
Published: December 2024

Seluruh siswa disabilitas (tingkat TK, SD, SMP dan SMA) dan instruktur disabilitas fisik  di lingkungan Sekolah Luar Biasa Negeri kategori A (SLBN-A) Citeureup Kota Cimahi telah dibekali kemampuan teknik Orientasi Mobilitas (OM) untuk dapat beraktifitas dan mobilitas mandiri secara aman. Adanya sikap keengganan, menggampangkan, dan memaksakan oleh sebagian siswa disabilitas fisik kategori diplegia dan paraplegia sangat berisiko terhadap dirinya serta lingkungan sekitar. Keengganan aktifitas mobilitas menggunakan alat bantu kursi roda manual (tingkat TK, dan SD) karena dirasa menguras stamina. Keengganan menggunakan kursi roda listrik pabrikan karena dirasa sulit untuk dikendalikan di jalan menanjak/turunan/miring/berlubang dan ketakutan menabrak pada penggunaan ditempat keramaian. Jika kondisi ini dibiarkan berdampak siswa dan instruktur disabilitas fisik sulit menjadi manusia mandiri dan melek teknologi. Tujuan Pemberdayaan Kemitraan Masyarakat (PKM) ini, transfer keilmuan ilmu pengetahuan dan teknologi (IPTEK) melalui perancangan serta pebuatan purwarupa kursi roda listrik adaptive kepada instruktur dalam rangka menghasilkan produk teknologi tepat guna. Adaptive ditambahkan sensor anti tabrak (ultrasonic waterproof), sehingga memberikan informasi suara dan secara automatik membuat kursi roda melambat sampai berhenti ketika mendeteksi objek semakin dekat. Metode pelaksanaan kegiatan PKM yang ditawarkan merupakan hasil observasi dan analisis permasalahan yang dihadapi mitra. Pelaksanaan terbagi menjadi 2, yaitu pendampingan teori dan praktis (desain casing menggunakan 3D printing, PCB elektronik, dan kontrol pemrograman sensor aktuator berbasis Arduino). Hasil dari transfer IPTEK dipraktekan menjadi purwarupa dan digunakan langsung oleh instruktur disabilitas fisik untuk aktifitas sehari-hari di lingkungan SLBN-A.
Peningkatan Layanan Perpustakaan Sekolah SMPN 2 Purwosari Melalui Penyederhanaan Modul Aplikasi SLiMS
Authors: Wibowo Argo , Chrismanto Antonius Rachmat , Widi Tamtama Gabriel Indra , Kurniawati Lemmuela Alvita
Published: December 2024

Demi memenuhi kebutuhan pelanggan yang terus berkembang, perpustakaan di seluruh dunia telah menggunakan sistem manajemen perpustakaan sebagai alat penting dalam menyederhanakan operasional dan meningkatkan pengalaman pengguna perpustakaan. Pengabdian ini menyajikan studi kasus keberhasilan implementasi aplikasi SLiMS Senayan untuk meningkatkan layanan perpustakaan di SMP Negeri 2 Purwosari. Studi ini mengeksplorasi bagaimana SMP Negeri 2 Purwosari memanfaatkan aplikasi SLiMS Senayan untuk memperbarui layanannya, dengan fokus pada bidang-bidang utama Manajemen Katalog dan Layanan Sirkulasi. Studi kasus ini menyoroti dampak transformatif penerapan SLiMS Senayan di SMP Negeri 2 Purwosari. Dengan menerapkan sistem manajemen perpustakaan yang kuat ini, perpustakaan tidak hanya memodernisasi layanannya tetapi juga memposisikan dirinya sebagai institusi yang dinamis dan berpusat pada pengguna. Program yang telah dilakukan dalam meningkatkan layanan administrasi perpustakaan yaitu dengan menggunakan aplikasi SLiMS yang dimodifikasi. Program pengabdian ini berisi beberapa kegiatan seperti: koordinasi bersama tim dan mitra, kegiatan pelatihan, kegiatan modifikasi aplikasi SLiMS, pendampingan pengguna dan aplikasi SLiMS, dan terakhir dilakukan evaluasi terhadap program yang telah dilaksanakan. Hasil evaluasi menunjukkan tingkat pemahaman yang baik sesudah pelatihan SLiMS. Petugas perpustakaan dapat menjalankan aplikasi SLiMS dengan mandiri setelah kegiatan pengabdian ini selesai.
Perancangan Layout Ruangan Kantor Desa Sindangsari
Authors: Robecca Julian , Ardila Najwa Ahsani , Pamungkas Tri Noor , Santosa Alam
Published: December 2024

Tujuan dari kegiatan ini adalah untuk memberikan wawasan dan pengetahuan pada mitra tentang tata letak fasilitas ruangan yang lebih efektif dan efisien, dan membuat rancangan tata letak fasilitas ruangan kantor yang lebih baik. Tata ruang kantor merupakan aspek penting dalam menunjang kinerja karyawan. Tatanan sebuah kantor menggambarkan bagaimana pegawai di dalam kantor tersebut bekerja dalam kesehariannya. Manfaat yang dihasilkan pada kegiatan ini adalah pemahaman mitra mengenai pentingnya tata letak (layout) suatu ruangan dalam menunjang aktifitas perkantoran dan dapat meningkatkan kinerja pengguna ruangan tersebut. Tata ruang kantor yang tepat, penting diterapkan di instansi pemerintah termasuk di kantor Desa Sindangsari. Kantor Desa Sindangdari adalah sebuah kantor pemerintahan desa yang terletak di Kecamatan Leuwigoong, Kabupaten Bandung, Jawa Barat. Hasil dari pelaksanaan kegiatan adalah berupa rancangan tata letak ruangan fasilitas kantor desa yang berubah, baik karena perubahan letak maupun penambahan berbagai peralatan yang diperlukan, berupa berbagai display dari program-program desa. Perubahan tata letak kantor ini membuat pegawai kantor dapat melakukan pekerjaannya dengan lebih efektif. Sehingga kenyamanan diruangan kantor memberi dampak yang lebih baik lagi untuk melayani masyarakat desa Sindangsari.
INTERVIEW WITH DR. TATSURU AKIMOTO
Authors: Matsuo Kana
Published: December 2024

O Prof. Tatsuru Akimoto compartilhou reflexões sobre sua trajetória no Serviço Social Internacional durante entrevista com a Prof. Ele expressou sua surpresa ao receber o Prêmio Memorial Katherine A. Kendall, destacando a importância do prêmio na promoção do interesse internacional pelo Serviço Social Japonês. Akimoto explicou como sua paixão pelas questões trabalhistas e pelos segmentos mais vulneráveis ​​da classe trabalhadora o levou a cursar Serviço Social. A sua investigação nos Estados Unidos, especialmente em Detroit, e as suas contribuições para a Organização Internacional do Trabalho (OIT) foram fundamentais para moldar a sua perspectiva sobre a intersecção entre trabalho, pobreza e políticas sociais globais. conceito inovador que desafiou a visão dominante do Serviço Social como apenas aderindo ao modelo Ocidental de Serviço Social Profissional (WPSW). Ele propôs a noção de alternativas funcionais e enfatizou o papel do "Serviço Social Budista" como uma abordagem enraizada em contextos locais e culturais. Akimoto discutiu ainda as implicações da revisão da definição internacional de Serviço Social, explorando como as tradições locais, como o Budismo, influenciar o desenvolvimento de práticas sociais específicas. Ele categorizou o Serviço Social Budista em três formas: WPSW praticado por budistas, WPSW adaptado com elementos budistas e práticas sociais baseadas em princípios budistas. A entrevista ressaltou a importância de transcender as fronteiras nacionais e reconhecer diversos modelos de Serviço Social para atender às necessidades socioculturais variadas. contextos de forma eficaz.
Monitoria Interativa no Ensino Superior: a experiência do PIP Economia da UFT na redução de reprovações e promoção de permanência estudantil
Authors: Nasche Aline de Oliveira , Neves Fernando Jorge Fonseca , André Claudomiro Moura Gomes , Fonseca Fernando Sérgio de Toledo , Ferreira Phillipe Farias , Martinazzo Ana Beatriz , Albuquerque Isabella Cristina Alves
Published: December 2024

Diante dos desafios enfrentados no ensino superior, nomeadamente, altas taxas de reprovação e de evasão, este trabalho busca contribuir – com base na experiência do Projeto de Inovação Pedagógica do Curso de Economia da UFT (PIP Economia) -, para manter os estudantes no curso sob melhores condições de motivação e desempenho acadêmico. O PIP Economia, com a Monitoria Interativa em 2023, tem por objetivo fortalecer trajetórias acadêmicas, promovendo a permanência e sucesso dos estudantes. Para isso, o projeto oferece ambientes de trabalho como Salas de Estudo Interativo e Espaços de Convivência, pensados para envolver e aumentar a participação dos alunos. O PIP Economia oferece, também, um programa de Nivelamento em Matemática Básica. Além disso, capacita alunos através de técnicas de leitura com criação de mapas mentais, oferece oficinas que exploram bases de dados secundárias para análise econômica, cursos práticos em programação com R e Power BI. Um curso introdutório de informática para adolescentes da comunidade de Taquari, amplia seu alcance e impacto. Ao estreitar relações entre professores e estudantes, o projeto almeja não só diminuir o represamento de estudantes e reduzir suas taxas de reprovação, mas também melhorar suas prestações no Exame Nacional de Desempenho de Estudantes (ENADE). Alinhado ao 4º Objetivo de Desenvolvimento Sustentável da Agenda 2030 da ONU, que visa assegurar uma educação de qualidade inclusiva, o projeto busca proporcionar uma experiência de aprendizado que prepara os alunos tanto para o sucesso acadêmico quanto para a atuação qualificada no mercado de trabalho.
Mortalidade por Transtorno Depressivo Recorrente: Uma Análise Sociodemográfica no Cenário Brasileiro
Authors: Sauer Vitória Picinini da Silva , Kuhl Antônia Diniz , Tesheiner Bruno Jardim , Morais Gabriela Sequeira de Campos , Peixoto Marcelo de Carvalho Peixoto , Ferreira Anna Carolina Sehl , Yoo Jubin , Scherer Juliana Nichterwitz
Published: December 2024

Considerando a alta prevalência e o impacto significativo do Transtorno Depressivo Recorrente (TDR) na saúde pública brasileira, especialmente em termos de mortalidade e morbidade, este estudo visa preencher lacunas na compreensão dos fatores sociodemográficos relacionados à mortalidade por TDR no Brasil. Objetiva-se analisar as características das mortes por TDR entre 2018 e 2021, buscando identificar padrões de vulnerabilidade relacionados à idade, sexo, cor/raça, estado civil, escolaridade e região. Para tanto, procede-se uma análise descritiva dos dados de mortalidade do DATASUS, estratificando os óbitos por fatores sociodemográficos e regionais. Desse modo, observa-se que a região Nordeste apresenta o maior número de óbitos, sendo as pessoas sem escolaridade, idosos e indivíduos casados os grupos mais afetados. Esses resultados indicam disparidades regionais e sociais que afetam a mortalidade por TDR, o que permite concluir que políticas públicas específicas são necessárias para reduzir essas desigualdades e melhorar o acesso aos cuidados em saúde mental no Brasil.
Múltiplos Efeitos Adversos Graves da Corticoterapia na Nefrite Lúpica em um Paciente Masculino – Um Relato de Caso
Authors: Isper Letícia , Carazzatto Guilherme Bussola , Luizari Pietra Cotta , Camargos Luciana Kelly de
Published: December 2024

O lúpus eritematoso sistêmico (LES), é uma doença autoimune sistêmica que afeta múltiplos órgãos. Os estudos epidemiológicos sugerem que pacientes portadores de LES tem uma expectativa de sobrevivência em 10 anos de 90%, e 1⁄4 dos pacientes desenvolvem doenças ligadas a eventos trombóticos ou infecções oportunistas, sendo as principais causas de mortes a partir do lúpus. Uma das manifestações clínicas mais comuns do LES é a nefrite lúpica (NL), marcada pela deposição de imunocomplexos, proteinúria, hematúria, inflamação, lesões microvasculares, e disfunção renal progressiva, sendo que 22% desses pacientes desenvolvem doença renal crônica em até 15 anos do diagnostico de NL. O presente caso, descreve um paciente de 21 anos, portador de nefríte lupica, que da entrada no pronto socorro queixando-se de edema periorbitário, anasarca e elevação da pressão arterial. Alguns meses depois, retorna ao atendimento com surgimento de celulite em coxa esquerda, dor e edema em membros inferiores; seu quadro se agrava e surgem complicações sistêmicas. Aparição de pneumotórax hipertensivo decorrente de cushing medicamentoso, derrame pleural extenso e dermatoses pós diálise por uso de vancomicina caracterizam as complicações do caso que levaram o paciente a mais de 40 dias de internação. Algumas explicações aqui relatadas, servirão de base para melhor entendimento do caso, que a princípio teve boa condução e levou o paciente a uma remissão completa de todas as comorbidades apresentadas e descritas.
SO SÁNH CÁC PHƯƠNG PHÁP TUYẾN TÍNH ĐỂ PHÂN TÍCH CHẾ ĐỘ XÁC LẬP CỦA LƯỚI ĐIỆN TRUYỀN TẢI 39 NÚT NEW ENGLAND
Authors: Đức Nguyễn Duy , Sáng Võ Trọng , Văn Phạm Năng
Published: December 2024

Hệ phương trình trào lưu công suất có vai trò quan trọng trong các bài toán quy hoạch và vận hành hệ thống điện. Các phương pháp phân tích trào lưu công suất xoay chiều (ACPF) truyền thống cho kết quả chính xác, nhưng do tính phi tuyến, khả năng hội tụ kém và hiệu suất tính toán thấp nên ứng dụng trong hệ thống điện bị hạn chế. Bài báo này so sánh hai phương pháp tuyến tính để phân tích chế độ xác lập của lưới điện, bao gồm phương pháp dòng điện một chiều (DCPF) và phương pháp trào lưu công suất tuyến tính tách biến (DLPF). Các phương pháp phân tích chế độ xác lập này được so sánh sử dụng lưới điện truyền tải 39 nút New England để tính toán mô-đun điện áp nút, góc pha điện áp nút và dòng công suất tác dụng trên các nhánh. Các kết quả tính toán cho thấy phương pháp trào lưu công suất tách biến (DLPF) cho kết quả tốt hơn về mô-đun và góc pha điện áp nút so với phương pháp dòng điện một chiều (DCPF), trong khi đó kết quả về dòng công suất tác dụng trên các nhánh của phương pháp DLPF lại kém hơn so với phương pháp DCPF.
GIẢI PHÁP THEO DÕI ROBOT DI ĐỘNG HOẠT ĐỘNG TRONG NHÀ BẰNG CAMERA TRẦN SỬ DỤNG MẠNG HỌC SÂU YOLOv9
Authors: Hiếu Lưu Trọng , Dũng Nguyễn Tấn
Published: December 2024

Nghiên cứu này trình bày một giải pháp xác định vị trí của robot di động trong môi trường trong nhà bằng một máy ảnh trần sử dụng mạng học sâu YOLOv9. Những giải pháp cổ điển, robot di động được gắn một thẻ qr-code, tuy nhiên thẻ thường có kích thước nhỏ, dễ bị nhiễu và bị ảnh hưởng bởi độ sáng. Vì vậy, nhóm nghiên cứu để xuất giải pháp sử dụng một mạng học sâu YOLOv9 để theo dõi quá trình di chuyển ngẫu nhiên của robot. Thêm vào đó, trạng thái của robot khi di chuyển trong mê cung được biểu diễn bằng phương pháp dòng quang học. Nhóm cũng đề xuất một giải pháp biến đổi hệ tọa độ từ hệ tọa độ máy ảnh sang hệ tọa độ Descartes để có thể xác định được vị trí hiện tại của robot di động. Kết quả cho thấy giải pháp đề xuất có thể ghi lại toàn bộ quỹ đạo di chuyển của robot trong mê cung. Trong thời điểm tức thời, phương pháp dòng quang học cũng cho thấy được trạng thái của robot khi chuyển động thẳng, xoay và gần chướng ngại vật. Kết quả này là tiền đề để giải quyết các toán nâng cao trong robot di động như lập và theo dõi quỹ đạo trong môi trường trong nhà.
ẢNH HƯỞNG CỦA XỬ LÝ BỀ MẶT TỚI ĐỘ NHÁM VÀ TÍNH THẤM ƯỚT CỦA TITAN ĐỊNH HƯỚNG ỨNG DỤNG TRONG Y SINH
Authors: Trang Phạm Hồng , Hưng Nguyễn Đức , Vương Hoàng Văn , Hà Cao Hồng , Vượng Phạm Hùng
Published: December 2024

Tính chất bề mặt của Ti đóng vai trò quan trọng trong quá trình tích hợp xương, tăng độ bền, giảm viêm nhiễm và do đó cải thiện khả năng ứng dụng của Ti trong cấy ghép y sinh. Nghiên cứu này tập trung nghiên cứu ảnh hưởng của xử lý bề mặt titan qua ba bước sử dụng hỗn hợp các axit như (H2O2: HCl), (HF: HNO3), và CH3COOH được kiểm soát về nồng độ và thời gian thực hiện để điều chỉnh độ nhám và cải thiện khả năng thấm ướt bề mặt của Ti định hướng ứng dụng cho y sinh. Hình thái bề mặt Ti được đánh giá bằng phương pháp hiển vi điện tử quét, độ nhám của bề mặt được kiểm tra bằng hiển vi quang học. Khả năng thấm ướt của bề mặt Ti sau khi xử lý được khảo sát bằng cách đo góc thấm ướt. Kết quả nghiên cứu cho thấy độ nhám bề mặt tăng từ 1,54µm lên 10,09 µm với độ độ đồng đều cao, trong khi góc thấm ướt tương ứng đã giảm từ 68,9o xuống còn 51,8o. Kết quả phân tích EDS cho thấy bề mặt vật liệu sau khi xử lý bề mặt có độ tinh khiết cao. Kết quả này phù hợp với yêu cầu đặt ra về việc tăng hiệu quả xử lý bề mặt vật liệu titan cho định hướng ứng dụng trong cấy ghép y sinh.
SO SÁNH HIỆU QUẢ CÁC BỘ VI ĐIỀU KHIỂN TRONG ỨNG DỤNG ĐIỀU CHỈNH TỐC ĐỘ ĐỘNG CƠ DC SỬ DỤNG GIẢI THUẬT TRƯỢT BẬC CAO VỚI MẶT TRƯỢT PHI TUYẾN
Authors: Nó Nguyễn Tấn , Thiên Mai Nhật
Published: December 2024

Trong lĩnh vực điều khiển động cơ điện một chiều, sự lựa chọn phần cứng điều khiển đóng vai trò quan trọng để đạt được hiệu quả điều khiển tối ưu. Bài báo trình bày nội dung so sánh, phân tích, đánh giá hiệu quả điều khiển tốc độ động cơ điện một chiều của các bộ vi điều khiển như bo mạch phát triển TMS320F28379D, bo mạch STM32F407, bo mạch phát triển Mega2560. Nhóm nghiên cứu dựa vào lý thuyết điều khiển trượt bậc cao với mặt trượt phi tuyến, nó giúp làm giảm đáng kể hiện tượng dao động và rút ngắn thời gian đáp ứng so với phương pháp điều khiển trượt cổ điển. Điều khiển lập trình mô hình được thiết kế trên phần mềm MATLAB/ Simulink. Các bộ vi điều khiển được lập trình với bộ điều khiển trượt bậc cao với mặt trượt phi tuyến được sử dụng trong thí nghiệm với tốc độ thấp hơn 130 (rad/s) có đáp ứng tốt và loại bỏ ảnh hưởng dao động. Tuy nhiên, bo mạch TMS320F28379D đáp ứng tốt nhất về thời gian xác lập nhanh và sai số xác lập nhỏ nhất tại tốc độ 260 (rad/s). Bên cạnh đó, tại tốc độ này, bo mạch STM32F407 cũng đáp ứng tốt về thời gian xác lập nhanh và sai số xác lập nhỏ. Ngược lại, bo mạch Mega 2560 có kết quả không tốt về thời gian xác lập là sai số xác lập nhỏ tại tốc độ đặt 260 (rad/s).
THỰC NGHIỆM BỘ BIẾN ĐỔI ĐA MỨC MMC VỚI ĐIỀU CHẾ PS-PWM SỬ DỤNG CÁC SÓNG MANG CÙNG PHA CÙNG TẦN SỐ CÙNG BIÊN ĐỘ
Authors: Cường Trần Hùng
Published: December 2024

PWM là phương pháp điều chế được áp dụng phổ biến trong các bộ biến đổi đa mức do có cách thực hiện đơn giản và hiệu quả trong một số trường hợp nhất định. Quá trình áp dụng và kiểm chứng điều chế PWM cho bộ biến đổi đa mức MMC là một thách thức lớn do sự phức tạp của kỹ thuật xây dựng mạch lực MMC. Bài báo này trình bày quá trình phân tích, triển khai, áp dụng điều chế PS-PWM và kết quả mô phỏng, thực nghiệm của điều chế PS-PWM cho MMC nhằm chứng minh quá trình hoạt động khi MMC chuyển đổi điện năng từ phía DC sang phía AC. Quá trình được thực hiện từ việc phân tích hoạt động của MMC được áp dụng phương pháp điều chế PS-PWM, tiếp theo là thực hiện mô phỏng hệ thống, đánh giá kết quả mô phỏng. Cuối cùng là xây dựng hệ thống thực nghiệm MMC được áp dụng điều chế PS-PWM dựa trên vi điều khiển FPGA để chứng minh kết quả hoạt động so với lý thuyết. Các kết quả đã cho thấy MMC hoạt động tốt với điều kiện thực nghiệm tương đồng với lý thuyết và mô phỏng. Đây là cơ sở để có thể phát triển các dự án liên quan đến MMC.