bluuebunny/crossref_metadata_2025_split huggingface dataset:
OGLE-IV Period–Luminosity Relation of the LMC: An Analysis Using Mean and Median Magnitudes
Authors: Muñoz Jaime , García-Varela Alejandro , Henao-Castellanos Santiago , Sabogal Beatriz , Giraldo Luis Felipe , Martínez Jorge 
Published: September 2024

Abstract
The Period–Luminosity (PL) relation for Cepheid variable stars in the LMC is crucial for distance measurements in astronomy. This study analyzes the impact of using the median rather than the mean of the PL relation’s slope and zero-point. It also examines the persistence of the break at approximately 10 days and addresses specification issues in the PL relation model. Using VI-band median and mean magnitudes from the OGLE-IV survey, corrected for extinction, we fit the PL relation employing robust MM-regression, which features a high breakdown point and robust standard errors. Statistical tests and residual analysis are conducted to identify and correct model deficiencies. Our findings indicate a significant change in the PL relation for Cepheids with periods of 10 days or longer, regardless of whether median or mean magnitudes are used. A bias in the zero-point and slope estimators is observed when using median magnitudes instead of mean magnitudes, especially in the V band. By identifying and correcting regression issues and considering the period break, our estimators for the slope and zero-point are more accurate for distance calculations. Comparative analysis of the models for each band quantifies the bias introduced by using median magnitudes, highlighting the importance of considering the Cepheids’ periods for accurate location measure results, similar to those obtained using mean magnitudes.
Binary Mergers in the Centers of Galaxies: Synergy between Stellar Flybys and Tidal Fields
Authors: Winter-Granic Mila , Petrovich Cristobal , Peña-Donaire Valentın , Hamilton Chris 
Published: September 2024

Abstract
Galactic centers (GCs) are very dynamically active environments, often harboring a nuclear star cluster and supermassive black hole at their cores. Binaries in these environments are subject to strong tidal fields that can efficiently torque its orbit, exciting near-unity eccentricities that ultimately lead to their merger. In turn, frequent close interactions with passing stars impulsively perturb the orbit of the binary, generally softening their orbit until their evaporation, potentially hindering the role of tides to drive these mergers. In this work, we study the evolution of compact object binaries in the GC and their merger rates, focusing for the first time on the combined effect of the cluster’s tidal field and flyby interactions. We find a significant synergy between both processes, where merger rates increase by a factor of ∼10−30 compared to models in which only flybys or tides are taken into account. This synergy is a consequence of the persistent tides-driven eccentricity excitation that is enhanced by the gradual diffusion of j

z
driven by flybys. The merger efficiency peaks when the diffusion rate is ∼10−100 slower than the tides-driven torquing. Added to this synergy, we also find that the gradual softening of the binary can lift the relativistic quenching of initially tight binaries, otherwise unable to reach extreme eccentricities, and thus expanding the available phase space for mergers. Cumulatively, we conclude that despite the gradual softening of binaries due to flybys, these greatly enhance their merger rates in GCs by promoting the tidal-field-driven eccentricity excitation.
Massive Quiescent Disk Galaxies at 0.5 ≤ z ≤ 1 in CANDELS: Color Gradients and Likely Origin
Authors: Cui Qifan , Zhao Pinsong , Liu F. S. 
Published: September 2024

Abstract
A rare population of massive disk-dominated quiescent galaxies has recently drawn much attention, which intrudes the red sequence (RS) population without destroying the underlying stellar disks. In this study, we have carefully identified 48 RS, disk-dominated galaxies with M
* > 1010
M
⊙ between redshift 0.5 and 1.0 in all five CANDELS fields. These galaxies are well fitted by a two-component bulge plus disk model, and have the bulge-to-total ratio B/T < 0.4 in the both F814W and F160W bands. The fitting results indicate that these galaxies generally have extended stellar disks (∼3 kpc on average) and tiny bulge components (∼0.5 kpc on average). To understand their possible origins, we have also selected two control samples of 156 green valley (GV) and 309 blue cloud (BC) disk-dominated galaxies according to the same selection criteria. We study the UVI(U − V versus V − I) color gradients of these galaxies to infer their specific star formation rate (sSFR) gradients out to the maximum acceptable radii. We show that on average the disks in disk-dominated RS galaxies are fully quenched at all radii, whereas both the BC and GV disks are not fully quenched at any radii. We find that all the BC, GV, and RS disk galaxies generally have nearly flat sSFR profiles. We propose a potential formation mechanism, acknowledging that various other mechanisms (e.g., central compaction and active galactic nucleus feedback) might contribute, where massive quiescent disk-dominated galaxies are predominantly formed via a process of secular disk fading.
Nonparametric Statistics on Magnetic Properties at the Footpoints of Erupting Magnetic Flux Ropes
Authors: Liu Rui , Wang Wensi 
Published: September 2024

Abstract
It is under debate whether the magnetic field in the solar atmosphere carries neutralized electric currents, in particular, whether a magnetic flux rope (MFR), which is considered the core structure of coronal mass ejections, carries neutralized electric currents. Recently Wang et al. (2023) studied magnetic flux and electric current measured at the footpoints of 28 eruptive MFRs from 2010 to 2015. Because of the small sample size, no rigorous statistical analysis has been done. Here, we include nine more events from 2016 to 2023 and perform a series of nonparametric statistical tests at a significance level of 5%. The tests confirm that there exist no significant differences in magnetic properties between conjugated footpoints of the same MFR, which justifies the method of identifying the MFR footpoints through coronal dimming. The tests demonstrate that there exist no significant differences between MFRs with preeruption dimming and those with only posteruption dimming. However, there is a medium level of association between MFRs carrying substantial net current and those producing preeruption dimming, which can be understood by the Lorentz self-force of the current channel. The tests also suggest that in estimating the magnetic twist of MFRs, it is necessary to take into account the spatially inhomogeneous distribution of electric current density and magnetic field.
Le Baromètre du numérique
Authors: Lallement Gérard , Jouvenel Matthias de 
Published: September 2024

Le Baromètre du numérique est une enquête réalisée annuellement sur les équipements et les usages numériques en France. Elle s’est établie au fil du temps comme une source de référence pour les acteurs intéressés par le numérique (pouvoirs publics, entreprises…). La société française peut être qualifiée de « société numérique » : 76 % des Français se connectent à Internet tous les jours, et 12 % d’entre eux ne sont pas internautes. Le développement du smartphone a explosé en quelques années : désormais, c’est le moyen de connexion à Internet le plus fréquemment utilisé, avant l’ordinateur. Les utilisateurs sont prudents et avertis : le développement du numérique dépend de la confiance dans le numérique (protection des données personnelles, qualité et fiabilité de l’information, sécurité des moyens de paiement…). Internet est devenu une condition d’intégration dans la société : 76 % des personnes se sentent prêtes à adopter de nouvelles technologies ou de nouveaux services numériques.
Software Heritage : l’archive universelle des codes sources du logiciel
Authors: Di Cosmo Roberto 
Published: September 2024

Le logiciel est au cœur de toutes les activités de nos sociétés modernes, et le code source de ces logiciels contient ainsi une partie grandissante de nos connaissances techniques, scientifiques et organisationnelles, jusqu’à devenir une partie de notre patrimoine culturel. Il est aujourd’hui essentiel de préserver ce patrimoine : c’est la mission relevée par Software Heritage, qui construit une archive universelle spécifiquement conçue pour les codes sources des logiciels, un bien commun qu’il faut rendre disponible à tous. La tâche est immense et les enjeux sont colossaux : il s’agit d’un côté de préserver le passé du logiciel, ce qui demande un effort de recherche considérable, et il s’agit de l’autre côté de construire un grand instrument permettant d’observer le développement logiciel présent et de préparer de meilleurs logiciels pour le futur. Il s’agit aussi de construire une infrastructure internationale pour réconcilier la préservation de ce bien commun avec la souveraineté des nations.
Le rôle des communautés ( open source, open data, open gov )
Authors: Bras Mathilde 
Published: September 2024

L’ouverture des données publiques, la mise à disposition des codes sources développés par les administrations et la co-construction des politiques publiques impliquent un changement de posture des acteurs publics. Dès lors qu’il s’agit de mettre en place des « dispositifs d’ouverture publique » voués à améliorer la confiance des citoyens envers la puissance publique, assembler des communautés d’acteurs pluriels – agents publics, entrepreneurs, chercheurs, représentants de la société civile – a un impact certain sur les politiques publiques. L’apport de la « puissance créatrice de la multitude » dans l’État est vecteur d’innovation technologique et organisationnelle. Cette puissance ouvre de nouveaux champs de réflexion sur les modèles et imaginaires de l’action publique. Cet article propose d’illustrer l’approche « par communautés » dans plusieurs projets et dispositifs « publics et ouverts » en lien avec le numérique, et d’y apporter des éclairages prospectifs.
La crise a-t-elle renforcé les GAFAM ?
Authors: Namur Dominique , Toledano Joëlle 
Published: September 2024

Fin 2020, les performances boursières des GAFAM (Google, Apple, Facebook, Amazon et Microsoft) ont paru traduire les ruptures introduites par la pandémie. Pourtant, l’étude détaillée des comptes financiers et des activités révèle que les performances de 2020 prolongent et amplifient des tendances à l’œuvre, tout en favorisant les activités portées par la crise sanitaire. Apple et Amazon sortent grands gagnants alors que Facebook et Google font un peu moins bien qu’une tendance clairement favorable aux grands acteurs du numérique. La concurrence entre GAFAM s’exerce surtout aux marges des activités historiques, chaque acteur se différenciant sur les marchés très dynamiques. Ils peuvent être aussi en concurrence sur leurs relais de croissance avec quelques pure players portés par la pandémie, certes solides mais bien plus petits. Alors que le diagnostic du pouvoir de marché des GAFA est largement partagé, la remise en cause de leur hégémonie viendra-t-elle des États confrontés à des acteurs qui paraissent incontrôlables ?
Quel est le réel potentiel du métavers ?
Authors: Cavazza Frédéric 
Published: September 2024

Concept issu de la littérature cyberpunk des années 1980, le métavers déchaîne les passions des geeks et entrepreneurs depuis la réorientation stratégique de Facebook en 2021, qui en a fait son nouveau levier de développement. Point de convergence d’une grande diversité d’usages, le métavers cristallise les espoirs et les craintes de nombreux observateurs dont l’appréhension du potentiel est brouillée par des projets dont l’unique objectif est de réaliser une plus-value rapide reposant sur des promesses qu’ils seront incapables de tenir. Pour bien comprendre ce qu’est ou n’est pas le métavers, il faut prendre du recul et mettre de côté ses a priori afin d’en avoir une perception pragmatique et surtout réaliste. Non, le métavers n’est pas l’avenir du web , ce n’est pas non plus une technologie disruptive, c’est un terme générique pour décrire un média immersif qui englobe des jeux en ligne et univers virtuels déjà exploités par des centaines de millions d’utilisateurs, ainsi que des services novateurs plus ou moins mûrs dont la viabilité reste encore à prouver. Tenez-le pour acquis : les joueurs d’aujourd’hui sont les utilisateurs virtuels de demain.
Treatment of Kienböck's Disease Using Fourth and Fifth Extensor Compartmental Artery Vascularized Bone Grafts
Authors: Kim Byung Sung , Cha Joo Young , Kim Jaehyun , Jung Ki Jin , Nho Jae-Hwi 
Published: September 2024

Background
This study evaluated the radiological and clinical outcomes of bone grafts using fourth and fifth extensor compartmental arteries (4+5 ECAs) for the treatment of Kienböck's disease.

Materials and Methods
In total, 21 patients (12 men and 9 women; mean age, 41 years; range, 19–59 years) were followed for a mean of 33 months. Radiological images were analyzed for the Lichtman stage, carpal height ratio, radioscaphoid angle, and Stahl's index. Clinical evaluation included range of motion, visual analog scale (VAS) score, grip strength, modified Mayo wrist score (MMWS), Lichtman outcome score, and Disabilities of the Arm, Shoulder and Hand (DASH) score. At the time of surgery, 6, 14, and 1 patients had Lichtman stages II, IIIA, and IIIB, respectively.

Results

At the final follow-up visit, grip strength had improved from 65.4% to 79.7%, wrist extension had improved from 43° to 57°, and flexion had improved from 42° to 50°. There were no significant changes in the carpal height ratio, Stahl's index, or radioscaphoid angle. The mean VAS score was 1.7, and the mean DASH score was 6.9. The mean MMWS was 87.9, with excellent and good outcomes in 6 and 11 patients, respectively. Satisfactory Lichtman outcome scores were observed in 81%. Body mass index had a strong correlation and age had a weak correlation with MMWS (coefficient=−0.534,
P
=.013, and coefficient=−0.393,
P
=.078, respectively).

Conclusion

The 4+5 ECA bone graft is effective for the treatment of Kienböck's disease in young patients with low body mass index. [
Orthopedics
. 2024;47(6)e292–e296.]
Survey of Melanoplus gaspesiensis and other alpine Acrididae (Orthoptera) on four summits of Gaspésie National Park, Québec, Canada
Authors: Gauthier Kevin , Saint-Germain Michel , Larrivée Maxim 
Published: September 2024

Abstract
Alpine tundra areas are threatened by anthropogenic climate change. They are also often represented as hotspots of endemism. Studying the insect communities associated with these habitats is therefore highly relevant. Melanoplus gaspesiensis Vickery is a grasshopper species known for its extremely limited distribution; it is considered endemic to Mont Albert, on the Gaspé Peninsula, Québec, Canada. Given its extremely limited distribution and with its habitat being particularly sensitive to climate change, the species is likely to soon be considered “at risk” at both the provincial and national levels. In order to confirm the current distribution of M. gaspesiensis, we sampled Acrididae on four alpine summits of the Gaspé Peninsula. Four species of Acrididae were captured. Almost 85% of the captured specimens were M. gaspesiensis, all of which were captured on Mont Albert. Our data are thus coherent with the species being endemic to that summit. The unique geology of Mont Albert (serpentine) may explain why M. gaspesiensis appears to be restricted to this one summit.
Trapping studies reveal phenology and reproductive behaviour in two solitary sweat bees (Hymenoptera: Halictidae)
Authors: Proulx Alex , Richards Miriam H. 
Published: September 2024

Abstract
To reconstruct behavioural changes that underpin evolutionary transitions between solitary and eusocial behaviour, we need detailed behavioural information about both solitary and eusocial species. Most behavioural studies of sweat bees have focused on sociality. We addressed the lack of detailed information about solitary species using pinned specimens of Lasioglossum leucozonium (Schrank) and L. zonulum (Smith) from Ontario (2003–2019) and Alberta (2016). We used weekly abundance of trapped bees to evaluate flight phenology (univoltine versus bivoltine), delineating two phases of flight activity, P1 and P2, before and after the first appearance of males, and evaluated female traits related to reproduction (body size, wear, and ovary development). All populations were confirmed to be solitary. The Ontario L. leucozonium and Alberta L. zonulum were univoltine, with P1 and P2 females being similar in size but P2 females more worn and with less-developed ovaries. Ontario L. zonulum were bivoltine, with P2 females being larger, more worn, and having more ovary development than P1 females, a unique pattern among bivoltine sweat bees. Contrasting observations between univoltine and bivoltine populations support the contention that solitary reproduction is not necessarily “simple” and that detailed information is needed to illuminate behavioural changes during bee social evolution.
Electronic health records model to improve the quality of patients’ healthcare
Authors: Lovemore Motsi 
Published: September 2024

Background: Electronic health records (EHR) has been acknowledged for bringing down healthcare costs and enhancing hospital service standards.Aim: The aim of this study was to develop an EHR model to lower patient treatment costs and enhance healthcare quality in South African public healthcare.Methods: In this study, a cross-sectional quantitative methodology was used. The research data for this study were provided by medical healthcare professionals, at Dr. George Mukhari Academic Hospital (DGMAH). This included doctors, nurses, pharmacists, radiologists, and radiographers who completed a semi-structured questionnaire.Results: The final model’s findings show that the use of EHR significantly improves information quality (IQ) and positively influences medical errors reduction (MER). Knowledge quality (KQ) has a positive significant impact on MER, whereas IQ has a considerable negative impact on MER. Furthermore, cost reduction in patient treatment (CRPT) has a positive significant influence on MER.Conclusion: Patients obtain better medical care when medical professionals have access to complete and accurate information. Medical errors can be reduced or even prevented with the use of EHRs, which can lead to better patient outcomes.Contribution: The quality of patient care at South African public hospitals and in other developing countries can be enhanced by using this framework as a guide to reduce treatment costs.
The ordinary and the mystical? Exploring the intersections of Spirituality and Public Theology
Authors: Forster Dion A. , Marchinkowski George W. 
Published: September 2024

This article starts from the premise that the ordinary is the mystical. It does so by delving into the dynamic relationship between Spirituality and Public Theology against the backdrop of Christianity’s societal roles. It explores how Christian theology extends beyond private faith to address broad societal issues. Through a critical examination of Public Theology’s distinct contributions to contemporary discussions, the article emphasises the necessity of engaging Spirituality – with its focus on the divine-human relationship into this discourse.Contribution: This synthesis aims to enrich our comprehension of Christianity’s impact on public life, advocating for a faith that actively contributes to societal transformation across diverse contexts.
Social Media Use and Body Dysmorphia among Adolescents in Western Mindanao, Philippines: A Cross-sectional and Case Series Study
Authors: Usman Anna Paula Kue , Punzalan Mary Germeyn Durias 
Published: September 2024

Abstract

Introduction:
The widespread use of social media has raised concerns about its impact on mental health among the youth. Body dysmorphic disorder (BDD) is a debilitating mental disorder, involving an excessive fixation on the belief that certain body parts are distorted. The study sought to determine the relationship between social media use and body dysmorphia symptoms and explore reasons influencing these.

Subjects and Methods:
A cross-sectional study design and a case series were utilized. The participants (n = 154) were adolescents 15–19 years old in Zamboanga City, Philippines. Self-administered questionnaires were utilized to measure social media use, and the Appearance Anxiety Inventory (AAI) questionnaires were used to screen for BDD. A case series was done through key informant interviews among the three highest-scoring participants on the AAI. Descriptive statistics, Chi-square test, t-test, Pearson correlation, and Spearman correlation were utilized in the study.

Results:
Positive BDD screening was significantly associated with increased time spent on TikTok and was correlated with posting text-based comments on one’s profile, looking at photos and posts on others’ profiles, and editing photos before posting. Increased time on Facebook, TikTok, and total time spent on all platforms positively correlated with AAI scores, while time on Threads exhibited a negative correlation.

Conclusion:
The study presents the concerning impact of social media on the mental health of young people, associating significant use to increased symptoms of BDD. It underscores the importance of fostering digital literacy and responsible social media usage to mitigate these negative effects among adolescents in Zamboanga City.
Myoepithelial Carcinoma of the Breast - A Case Report and Review of 72 Cases Reported in Literature
Authors: Singh Kaalindi , Negi Ratti Ram , Thakur Preyander Singh , Negi Anup 
Published: September 2024

Abstract

Objective:
Myoepithelial carcinoma of the breast is an extremely rare malignancy. A study of all reported cases was undertaken to understand the behavior of this disease entity and the response to different treatment modalities.

Data Sources:
Databases, like Pubmed, Scopus, Web of Science, etc. were searched using the keywords myoepithelial carcinoma breast and adenomyoepithelial carcinoma breast from 1984-2022. A total of 1551 results were reviewed.

Study Selection:
Studies reporting a diagnosis of myoepithelial carcinoma on histopathology and immunohistochemistry were selected. Seventy-one cases of myoepithelial carcinoma of the breast were identified and found to be suitable for our review. The individual data of these cases and our patient were then compiled and evaluated.

Results:
The median age at presentation was 57 years, and there was no side preponderance. The average tumor size at presentation was 2.6 cm – most patients presented with a lump in the breast. Surgery remained the mainstay of treatment, with wide local excision and mastectomy performed in 50% and 30% of the patients, respectively. The benefits of radiotherapy and chemotherapy could not be ascertained, and most patients had a poor response to both. Of the patients in whom follow-up data were available, 28.3% and 13.1% were alive at 2 and 5 years, respectively. Locoregional recurrence was reported in 18 (25%) patients, and distant metastases were reported in 17 (23.6%) patients.

Conclusion:
Myoepithelial carcinoma of the breast is a rare and aggressive cancer. Surgery with negative margins is the primary treatment.