bluuebunny/crossref_metadata_2025_split huggingface dataset:
Intensidad y duración de la respuesta inmune humoral a la vacuna para COVID 19 en trabajadores de la salud, utilizando una prueba de anticuerpos IgG cuantitativos
Authors: Becerra Gabriela , Ospina Sigifredo , Pizano Lisseth , Pérez Danys , Pérez Edward , Moncada Juan Sebastian 
Published: February 2025

Introduccion: La pandemia de COVID 19 ha afectado severamente a la humanidad, causando una alta morbilidad y mortalidad en todos los paises del mundo. El objetivo de este estudio fue determinar la intensidad y duración de la respuesta de anticuerpos IgG frente a la vacuna para COVID 19 en trabajadores de la salud. Materiales y métodos: Estudio descriptivo prospectivo longitudinal de evaluación de la respuesta inmune a la vacuna para COVID 19, con cuantificación de anticuerpos IgG para SARS CoV 2. Se realizaron mediciones a los 4, 8, y 12 meses post vacuna. Resultados: Primera medición (306 trabajadores): mediana de anticuerpos de 770.5 BAU/ml (RIQ: 338.7-2314.2); segunda medición (169 trabajadores): mediana de 185.7 BAU/ml (RIQ: 85.4-418.1); tercera medición (88 trabajadores): mediana de 3270 BAU/ml (RIQ:2480-3270). Mayor respuesta de anticuerpos en los trabajadores con antecedente de COVID 19. Discusión: La vacuna para COVID 19 genera una buena respuesta de anticuerpos, los cuales disminuyen en el tiempo y se recuperan con una dosis de refuerzo. La prueba de anticuerpos IgG cuantitativa contra RBD puede ser un buen correlato de protección.
PENGEMBANGAN E-LKPD BERBASIS HOTS (Higher Order Thinking Skills) PADA MATA PELAJARAN EKONOMI DI SMA KARTIKATAMA
Authors: Sholiha Sangidatus , Zelpita Dela 
Published: February 2025

Evaluasi pembelajaran di SMA Kartikatama Metro masih menggunakan metode konvensional yakni menggunakan kertas lembaran untuk dikerjakan siswa secara manual. Hal ini menyebabkan proses penilaian membutuhkan waktu yang lama sehingga memperlambat penyampaian hasil belajar. Tujuan Penelitian ini yakni untuk menghasilkan aplikasi evaluasi berbasis HOTS (Higher Order Thinking Skills) pembelajaran yang valid dan praktis. Penelitian ini menggunakan pendekatan Research and Development (R&D) dengan model pengembangan ADDIE (Analysis, Design, Development, Implementation, Evaluation) dan subjek penelitian siswa kela X SMA Kartikatama. Teknik pengumpalan dari angket validasi ahli materi, validasi ahli media dan angket respon peserta didik. Hasil penelitian menunjukkan bahwa E-LKPD yang dikembangkan validasi ahli media dengan skor 95% dan validasi ahli materi materi 88,5%. Uji kepraktisan menunjukkan respon positif dari peserta didik dengan skor lebih dari 60%. Pengembangan E-LKPD berbasis HOTS ini berhasil mengintegrasikan teknologi digital dalam pembelajaran ekonomi dan mendukung pengembangan kemampuan berpikir tingkat tinggi siswa. Penelitian ini memberikan kontribusi dalam pengembangan media pembelajaran inovatif yang dapat mendukung proses pembelajaran aktif dan berpusat pada siswa
Enhancing broiler growth, carcass quality, blood parameters and intestinal microbial load: the role of dietary garlic powder as a natural growth promoter
Authors: Deeb Salma E. , Ashour Elwy A. , Youssef Islam M. , Alshehry Garsa , Abuljadayel Dalia A. , Aljahdali Nesreen , Albaqami Najah M. , Bahnas Marwa M. , Abd El-Hack Mohamed E. 
Published: February 2025

Abstract
This study evaluated the effects of garlic powder (GP) as a natural growth promoter in broiler diets, replacing traditional antibiotics. Four experimental groups of 264-day-old broiler chicks (Ross 308) were established in a fully randomized design experiment. Each group had six replicates, each with eleven unsexed chicks. The treatments were used as follows: The 1st group was the basal diet without any additive (control group). 2nd, 3rd and 4th groups (1 GP, 2 GP and 3 GP) receving basal diet + 1, 2, and 3 g GP/kg feed, respectively. Results demonstrated that 2 and 3 g GP/kg diets significantly improved feed conversion ratio (FCR), while 1 g GP/kg feed led to the greatest gains in body weight, weight gain, and feed intake. Blood analysis revealed elevated total protein, albumin, and A/G ratios across all GP groups, alongside reduced creatinine and ALT levels. The 3 g GP/kg diet notably increased HDL and reduced total cholesterol (TC) and LDL concentrations. Immunoglobulin Y (IgY) levels were highest in birds fed 1 and 3 g GP/kg, with IgM levels peaking in the 1 g GP group. Additionally, the 3 g GP/kg diet enhanced superoxide dismutase (SOD) activity and reduced malondialdehyde (MDA) levels, a marker of oxidative stress. In contrast, the control group exhibited the highest MDA levels.
Additionally, the highest lactic acid bacteria (LAB) and total bacterial count (TBC) are found in the 1 GP group. However, the control group had the highest levels of E. coli. In conclusion, incorporating garlic powder into broiler diets enhanced immune response, blood parameters, overall growth, and gut bacteria counts with optimal effects observed at 1 and 3 g GP/kg.
Investigating the behavioral implications of microplastic exposure in animal species
Authors: Hamidian Amir Hossein , Feizi Meisam 
Published: February 2025

Abstract
Microplastics (MPs) are pervasive pollutants impacting ecosystems worldwide, causing physical harm and behavioral changes in wildlife. MP toxicity mainly depends on size, porosity, weathering, and surrounding compounds. MPs disrupt feeding and metabolism, resulting in reproductive, neurological, and behavioral disorders. These impacts significantly alter ecological niches and reduce animal survival. Understanding these impacts is crucial for assessing the broader ecological effects of plastic pollution and developing effective mitigation strategies. This review investigated 110 papers on quantifying the behavioral consequences of MPs while considering their_physiological basis, emphasizing the significance of these changes and their potential long-term influence on populations and ecosystems. This study thoroughly investigates model species, including plankton, fish, amphibians, crustaceans, pollinators, and mammals. Fish exhibited the most significant behavioral impact, while crustaceans showed the least. Mice, representing mammals, displayed the most severe physiological damage.
Effect of sleep quality on weaning from mechanical ventilation: A scoping review
Authors: Locihová Hana , Jarošová Darja , Šrámková Karolína , Slonková Jana , Zoubková Renáta , Maternová Klára , Šonka Karel 
Published: February 2025

Abstract

Introduction
Mechanically ventilated patients have disturbed sleep.

Aim of the study
To explore whether there is a relationship between successful or unsuccessful weaning of patients and their sleep quality and circadian rhythm.

Materials and Methods
A scoping review. The search process involved four online databases: CINAHL, MEDLINE, ProQuest, and ScienceDirect. Original studies published between January 2020 and October 2022 were included in the review.

Results
Six studies met the inclusion criteria. These studies showed that patients with difficult weaning were more likely to have atypical sleep, shorter REM sleep, and reduced melatonin metabolite excretion. Muscle weakness was an independent factor associated with prolonged weaning from mechanical ventilation and was significantly more frequent in patients with atypical sleep. Heterogeneous patient samples and the methodology of the studies hamper a clear interpretation of the results.

Conclusions
A relationship was found between abnormal sleep patterns, reduced melatonin metabolite (6-sulfa-toxymelatonin) excretion, and unsuccessful weaning. However, the causality is not clear from the existing research.
Expatriates at the Polls: An analysis of predictors affecting voter participation in the 2019 EU Elections
Authors: Stancea Andreea , Ciocîrlan Cecilia , Andrei Despina 
Published: February 2025

Abstract
In the wake of the 2024 elections, far-right parties have capitalized on prevailing social and economic grievances to expand their electoral base. These parties raised issues such as immigration, national security, and economic dissatisfaction to appeal to voters seeking drastic changes from the status quo. This paper focuses on expatriates’ voter turnout in the last 2019 European elections and examines whether the turnout of the European elections is influenced by the period expatriates have been living in another EU country. Additionally, this paper aims at testing if expatriates are more inclined to have an extreme political orientation than non-expatriates. Employing several logistic regression models to examine the effects between different types of determinants and turnout and extreme political orientation, this paper aims at testing to what extent the period of residence, perception of the economic situation, trust and European views influence the expatriates’ voters to go to the polls.
Uniform Distribution of αn Modulo One for A family of Integer Sequences
Authors: Weingartner Andreas 
Published: February 2025

Abstract
We show that the sequence (αn)
n

∈ℬ is uniformly distributed modulo 1, for every irrational α, provided ℬ belongs to a certain family of integer sequences, which includes the prime, almost prime, squarefree, practical, densely divisible and lexicographical numbers. We also give an estimate for the discrepancy if α has finite irrationality measure.
Uniform Dual Approximation to Veronese Curves in Small Dimension
Authors: Schleischitz Johannes 
Published: February 2025

Abstract
We refine upper bounds for the classical exponents of uniform approximation for a linear form on the Veronese curve in dimension from 3 to 9. For dimension three, this in particular shows that a bound previously obtained by two different methods is not sharp. Our proof involves parametric geometry of numbers and investigation of geometric properties of best approximation polynomials. Slightly stronger bounds have been obtained by Poels with a different method contemporarily. In fact, we obtain his bounds as a conditional result.
Hubungan Kepatuhan Kunjungan Antenatal Care dengan Cara Persalinan di Puskesmas Sukaindah Kabupaten Bekasi
Authors: Sunarto Agus , Fadlina Filda , Agusfar Achmad Zani , Wahyuni Tri 
Published: February 2025

Latar Belakang: Persalinan normal adalah proses persalinan melalui vagina dan persalinan Caesar atau Sectio caesarea (SC) yaitu proses mengeluarkan janin melalui irisan pada dinding perut dan rahim. Menurut World Health Organization (WHO) persalinan normal terdapat (79 %) sedangkan persalinan SC terdapat (21.1%) persalinan di Dunia dari (94.5%) kelahiran hidup. Tujuan: Penelitian ini bertujuan untuk mengetahui hubungan antara kepatuhan kunjungan ANC dengan cara persalinan di Puskesmas Sukaindah. Metode: Penelitian dengan desain kuantitatif analitik cross-sectional menggunakan metode observasional. Sampel dalam penelitian ini adalah total sampling sebesar 375 responden yang memenuhi kriteria inklusi dan eksklusi . Analisis data secara Chi-square dengan menggunakan SPSS. Hasil: Hasil penelitian menunjukkan angka tertinggi dalam distribusi kepatuhan kunjungan ANC adalah ibu hamil yang tidak patuh kunjungan ANC yaitu sebanyak (53,1%), persentase ibu dengan persalinan spontan atau normal lebih tinggi dibanding ibu bersalin secara sectio caesarea (SC) yaitu sebanyak (67,2%), terdapat (79,7%) ibu yang hamil dalam usia yang aman (20 – 35 tahun), angka paritas tertinggi yaitu pada ibu dengan paritas 2 – 3 kali (74,4%), etiologi terbanyak yang menyebabkan ibu rujuk bersalin adalah ketuban pecah dini yaitu sebanyak (39,0%). Hasil kepatuhan kunjungan ANC dengan cara persalinan didapatkan nilai p-value 0,000 ( 0,05). Simpulan: Terdapat hubungan yang signifikan antara kepatuhan kunjungan ANC dengan cara persalinan di Puskesmas Sukaindah. Ibu hamil yang patuh mengikuti kunjungan ANC lebih cenderung untuk melahirkan secara normal dibandingkan dengan ibu hamil yang tidak patuh mengikuti kunjungan ANC. Ibu yang tidak patuh melakukan kunjungan ANC lebih berisiko 3,467 kali untuk bersalin secara sectio caesarea.
Passive leg raising test – optimal methodology. A systematic review and meta-analysis (literature review)
Authors: Berikashvili L. B. , Kuznetsov I. V. , Polyakov P. A. , Yadgarov M. Ya. , Ryzhkov P. V. , Yakovlev A. A. , Korolenok E. M. , Likhvantsev V. V. 
Published: February 2025

Introduction. The passive leg raising (PLR test) test is a widely used diagnostic test for assessing fluid responsiveness. However, there is no generally accepted methodology describing the details of its implementation.The objective was to establish criteria for conducting the PLR test based on the diagnostic accuracy of various variations.Materials and methods. A systematic review and meta-analysis included prospective cohort studies that evaluated the diagnostic accuracy of different PLR test variations. The primary endpoint was the area under the ROC curve (AUROC). The search was conducted up to March 2024 and included «snowball» method. The covariate influence was assessed via univariate meta-regression. The risk of bias was evaluated using QUADAS-2, and evidence certainty was assessed with GRADE.Results. The meta-analysis included 33 prospective cohort studies, 1,607 critically ill patients The AUROC for the PLR test was 0.882 [0.849; 0.916] (moderate certainty of evidence). Transthoracic and transesophageal echocardiography, transpulmonary thermodilution, and pulse contour analysis showed comparable results for assessing cardiac hemodynamics during PLR test, p = 0.253 (moderate certainty of evidence). Evaluating hemodynamic changes within the first two minutes of the PLR test increased diagnostic accuracy (high certainty of evidence). The starting body position (low Fowler’s position or supine) during the PLR test did not impact diagnostic accuracy (low certainty of evidence). Baseline covariates (age and gender) had no effect on diagnostic accuracy of the PLR test in critically ill patients (high certainty of evidence).Conclusion. For assessing fluid responsiveness in critically ill patients, the PLR test should include intracardiac hemodynamic assessment within two minutes using any common method. Low Fowler’s position is preferable starting position of the body for PLR test.
Structural Assessment and Rehabilitation of an Existing Hydraulic Masonry Structure Supporting Railway
Authors: Makhlouf Aly A. , Omar M. , Emarah Dina A. 
Published: February 2025

Old hydraulic masonry structures are essential components of global road and rail infrastructures. Over decades of operation, these structures have experienced inevitable deterioration, necessitating evaluations of their structural conditions through comprehensive assessment and rehabilitation programs to ensure compliance with contemporary safety standards. This study focuses on a specific regulator as a case example to implement a rehabilitation strategy aimed at restoring its structural integrity after 190 years of continuous service. From 2015 to 2021, an extensive program was conducted to assess the condition of the construction materials. This program included mechanical and physical testing, as well as Finite Element Analysis (FEA), to identify areas of high stress and to analyze the distribution of stress throughout the structure. The findings revealed that the structure fails to meet current Egyptian standards, thereby underscoring the critical need for a strengthening program. Subsequently, a rehabilitation intervention was developed, which involved reinforcing the intrados of the arches and piers with a slender reinforced concrete jacket. These reinforcements were integrated with the existing structure using steel shear bar connectors. Following the rehabilitation, a re-evaluation of the analysis of the modified structure using FEA software confirmed compliance with Egyptian specifications. The proposed rehabilitation strategy offers a viable solution to the challenges associated with the examined masonry arch bridge. Doi: 10.28991/CEJ-2025-011-02-012 Full Text: PDF
Smart Roundabout Coordination Systems for Sustainable Urban Mobility
Authors: Halawani Ahmed T. M. 
Published: February 2025

Traffic signal coordination control is a smart approach used in urban networks to relieve the congestion by increasing corridor throughput and minimizing overall traffic delay. Previous studies have investigated various signal coordination challenges; however, integrating roundabouts into a coordinated signalized corridor without compromising their operational distinctiveness remains underexplored. This study introduces an adaptive traffic signal offset strategy incorporating a platoon compaction factor to address the dispersion effects caused by roundabouts, ensuring the preservation of platoon movement along the coordinated corridor. The method was evaluated using the PTV VISSIM micro-simulation software. The results show improvements in sustainability indicators at roundabouts, with average corridor-level delays minimized by 17%, delays associated with vehicle stops reduced by 28%, fuel consumption reduced by 16%, and emissions reduced by 9% and 16% for NOₓ and CO₂, respectively. These improvements were statistically significant, affirming the robustness of the proposed method. The findings underscore the potential benefits of implementing this framework in real-world traffic scenarios, contributing to making urban transportation systems more efficient and sustainable. Doi: 10.28991/CEJ-2025-011-02-013 Full Text: PDF
A Novel Exact Solution of Longshore Current and Its Application on Permeable Groin
Authors: Umar Hasdinar , Assidiq Fuad M. , Triatmadja Radianta , Baeda Achmad Y. 
Published: February 2025

One major environmental problem exacerbated by longshore currents is beach erosion. Groins are a common defense tactic built perpendicular to the shore. However, conventional impermeable groins promote downstream erosion and disrupt sediment movement. Permeable groins provide a more environmentally friendly option, allowing some sediment to flow through. This study examines the effects of permeable groins on longshore currents. Permeable groins are not included in currently used longshore current equations. This study fills this gap by creating a new longshore current velocity equation considering permeable groins. The longshore current equation with the groin was developed based on the momentum equation in the longshore direction without the influence of lateral mixing and the assumption that base friction will rise due to the groin. Therefore, it was determined that the base shear stress after the groin was equal to the base shear stress plus the drag caused by the groin. The result shows that the longshore current equation through the groin is a function of the breaking wave parameter and the resistance parameter owing to the groin. Longshore current velocities with and without permeable groins of different densities were measured in wave basins. We collected information on groin characteristics, current velocities, and breaking wave heights. This investigation validates the shortcomings of the current equations. Doi: 10.28991/CEJ-2025-011-02-07 Full Text: PDF
Understanding Continuance Intention of Merchants as End User in Online Food Delivery After COVID-19
Authors: Yasirandi Rahmat , Thanasopon Bundit 
Published: February 2025

This study explores the continuance intention of merchants in using Online Food Delivery (OFD) services post-pandemic, employing an extended Expectation-Confirmation Model (ECM). While existing research on OFD predominantly examines food consumers, this study focuses on the merchant side and investigates how confirmation, perceived usefulness, satisfaction, perceived risk, and perceived critical mass influence their continuance intention. Using Structural Equation Modeling (SEM) on data collected from 378 Indonesian merchants, the findings highlight several critical factors. Perceived critical mass fosters platform adoption by creating a sense of widespread utility, while perceived risk indirectly affects continuance intention through its impact on satisfaction, emphasizing the need to address merchants’ concerns. This research enhances the understanding of merchant behavior in the OFD ecosystem by incorporating context-specific factors that influence their decisions. The findings offer practical recommendations for OFD providers to improve system reliability, mitigate perceived risks, and foster a robust user community to ensure sustained engagement. Future studies could build on these insights by investigating similar dynamics in different regions or by including other stakeholders, such as delivery drivers, to provide a broader understanding of the OFD ecosystem. Doi: 10.28991/HIJ-2025-06-01-012 Full Text: PDF
Smart Data Placement Strategy in Heterogeneous Hadoop
Authors: Bakni Nour-Eddine , Assayad Ismail 
Published: February 2025

Big Data platforms are becoming increasingly essential these days, given the volume of data generated every moment by millions of people around the world. The Hadoop framework is a solution that allows storing and processing these large amounts of data in parallel on a cluster of machines. The default data placement strategy adopted by the Hadoop Distributed File System (HDFS), initially designed for a homogeneous cluster where all machines are considered identical, relies on distributing data to nodes based only on their disk space availability. Implementing this strategy in a heterogeneous environment, where nodes have varying computing or disk storage capacities, may result in performance degradation. In this paper, we propose a smart data placement strategy (SDPS) in heterogeneous Hadoop clusters that aims to place high-access data on high-performance nodes. It takes cluster heterogeneity into account when distributing data by first dividing nodes into groups based on their performance levels using a clustering algorithm and then allocating data blocks to appropriate nodes based on their hotness. SDPS also allows dynamically specifying the replication factor of data blocks to reduce storage space waste while maintaining data availability. Experimental results show that SDPS is more efficient in a heterogeneous environment compared with the default data placement policy of HDFS, and it improves MapReduce data processing, data locality, and storage efficiency. Doi: 10.28991/HIJ-2025-06-01-03 Full Text: PDF
Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect
Authors: Su Junda , Lai Qinghui , Hu Jinjun , Xu Longjun , Xie Lili , Zou Yulin 
Published: February 2025

To study the intrinsic relationship between the structural response of long-span suspension bridges and the intensity measures (IMs) and to select the optimal IM to reduce the discreteness in the prediction of structural responses, this paper uses the Incremental Dynamic Analysis (IDA) method to amplitude adjust near-fault pulse-like ground motions and analyzes the response using the curvature at the base of the tower as the structural response index. Then uses the four evaluation indices: efficiency, sufficiency, practicality, and proficiency to evaluate the intrinsic relationship between the structural response and the IMs. The study results indicate that, according to the four evaluation indices, the velocity-related IMs all performed well, while those displacement-related IMs performed the worst. Among them, the effective peak velocity (EPV) performed the best, being optimal in all evaluation indices except for the sufficiency relative to magnitude, which was lower than the maximum incremental velocity (MIV). Therefore, the EPV can be considered the best ground motion IM for predicting the dynamic response of long-span suspension bridges under the action of near-fault pulse-like ground motion. This result can provide a basis for the selection of IMs and structural response prediction for near-fault long-span suspension bridges, considering the impulse effect. Doi: 10.28991/HIJ-2025-06-01-07 Full Text: PDF