bluuebunny/crossref_metadata_2025_split huggingface dataset:
MAGAZ3NE: Massive, Extremely Dusty Galaxies at z ∼ 2 Lead to Photometric Overestimation of Number Densities of the Most Massive Galaxies at 3 < z < 4*
Authors: Forrest Ben , Cooper M. C. , Muzzin Adam , Wilson Gillian , Marchesini Danilo , McConachie Ian , Gomez Percy , Annunziatella Marianna , Marsan Z. Cemile , Braspenning Joey , Chang Wenjun , de Lucia Gabriella , Fontanot Fabio , Hirschmann Michaela , Nelson Dylan , Pillepich Annalisa , Schaye Joop , Urbano Stawinski Stephanie M. , Stefanon Mauro , Xie Lizhi 
Published: December 2024

Abstract
We present rest-frame optical spectra from Keck/MOSFIRE and Keck/NIRES of 16 candidate ultramassive galaxies targeted as part of the Massive Ancient Galaxies at z > 3 Near-Infrared Survey (MAGAZ3NE). These candidates were selected to have photometric redshifts 3 ≲ z
phot <4, photometric stellar masses

log

(

M

∗

/

M

⊙

)

> 11.7, and well-sampled photometric spectral energy distributions (SEDs) from the UltraVISTA and VIDEO surveys. In contrast to previous spectroscopic observations of blue star-forming and poststarburst ultramassive galaxies, candidates in this sample have very red SEDs implying significant dust attenuation, old stellar ages, and/or active galactic nuclei (AGN). Of these galaxies, eight are revealed to be heavily dust-obscured 2.0 < z < 2.7 galaxies with strong emission lines, some showing broad features indicative of AGN, three are Type I AGN hosts at z > 3, one is a z ∼ 1.2 dusty galaxy, and four galaxies do not have a confirmed spectroscopic redshift. In fact, none of the sample has ∣z
spec − z
phot∣ < 0.5, suggesting difficulties for photometric redshift programs in fitting similarly red SEDs. The prevalence of these red interloper galaxies suggests that the number densities of high-mass galaxies are overestimated at z ≳ 3 in large photometric surveys, helping to resolve the “impossibly early galaxy problem” and leading to much better agreement with cosmological galaxy simulations. A more complete spectroscopic survey of ultramassive galaxies is required to pin down the uncertainties on their number densities in the early Universe.
Double-lined Spectroscopic Binaries from the LAMOST Low-resolution Survey
Authors: Liu Junhui , Zhang Bo , Wu Jianfeng , Ting Yuan-Sen 
Published: December 2024

Abstract
We report on a data-driven spectral model that we have developed for the identification of double-lined spectroscopic binary stars (SB2s) in the Large Sky Area Multi-Object fiber Spectroscopic Telescope low-resolution survey (R ∼ 1800). Employing simultaneous fitting with both single-star and binary-star models, we detected over 4800 SB2 candidates, where both components are detectably contributing to the spectrum, from an initial pool of 2.6 million objects. Tests show that our model favors FGK-type main-sequence binaries with high mass ratio (q ≥ 0.7) and large radial velocity (RV) separation (ΔRV ≥ 100 km s−1). Almost all of these candidates are positioned above the main sequence in the color–magnitude diagram, indicating their binary nature. Additionally, we utilized various observational data, including spectroscopy, photometry, parallax, and extinction, to determine multiple physical parameters such as the effective temperature, age, metallicity, RV, mass, mass ratio, stellar radius, along with their associated uncertainties for these SB2 candidates. For the 44 candidates with seven or more observational epochs, we provide complete orbital solutions. We make available catalogs containing various stellar parameters for identified SB2 systems.
An Empirical Sample of Spectra of M-type Stars with Homogeneous Atmospheric-parameter Labels
Authors: Du Bing , Luo A-Li , Wang Song , Li Yinbi , Qu Cai-Xia , Kong Xiao , Guo Yan-xin , Song Yi-han , Zuo Fang 
Published: December 2024

Abstract
The discrepancies between theoretical and observed spectra, and the systematic differences between various spectroscopic parameter estimates, complicate the determination of atmospheric parameters of M-type stars. In this work, we present an empirical sample of 5105 M-type star spectra with homogeneous atmospheric parameter labels through stellar-label transfer and sample cleaning. We addressed systematic discrepancies in spectroscopic parameter estimates by adopting recent results for Gaia EDR3 stars as a reference standard. Then, we used a density-based spatial clustering of applications with noise to remove unreliable samples in each subgrid of parameters. To confirm the reliability of the stellar labels, a five-layer neural network was utilized, randomly partitioning the samples into training and testing sets. The standard deviations between the predicted and actual values in the testing set are 14 K for T
eff, 0.06 dex for logg, and 0.05 dex for [M/H], respectively. In addition, we conducted an internal cross validation to enhance validation and obtained precisions of 11 K, 0.05 dex, and 0.05 dex for T
eff, logg, and [M/H], respectively. A grid of 1365 high-signal-to-noise ratio (S/N) spectra and their labels, selected from the empirical sample, was utilized in the stellar parameter pipeline for M-type stars of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), producing an almost seamless Kiel distribution diagram for LAMOST DR10 and DR11 data. The atmospheric parameters for M-type stars from LAMOST DR11 show improved precision compared to the data from DR9, with improvements (for spectra with S/N higher than 10) from 118 to 67 K in T
eff, 0.2 to 0.07 dex in logg, and 0.29 to 0.14 dex in [M/H].
Characterization of the Dust and Sodium Tails of Comet C/2020 F3 (NEOWISE) from Parker Solar Probe and Amateur Observations
Authors: Afghan Qasim , Jones Geraint H. , Battams Karl , Price Oliver , Coates Andrew J. 
Published: December 2024

Abstract
Comet C/2020 F3 (NEOWISE) reached perihelion on 2020 July 3 at 0.29 au and exhibited a highly structured dust tail. Using a simplified Finson–Probstein model, structures such as striae, observed in the tail in images obtained by the Parker Solar Probe spacecraft and amateur observers, are characterized in this work and parameterized in terms of dust ejection dates and dust β values. Other dust tail features are syndynic bands: bright, curved regions of the dust tail that lie within constant values of dust β. This study is the first in-depth analysis of these structures. Analysis revealed that the dust β distribution in the tail was approximately bimodal, corresponding to the two syndynic bands observed in the tail. The region between these bands, bounded by the β = 0.82 ± 0.02 and β = 1.20 ± 0.02 syndynes, appeared to have a reduced dust population, suggesting that dust grains of these β values were produced at a much lower rate. The alignments of the striae in the tail were measured and compared to the interleaved striae seen in C/2006 P1. C/2020 F3 was found to have no interleaved striae, which is possibly due to the timing of the comet’s heliospheric current sheet crossing, not coinciding with, the main period of dust ejection.
Centre(s) de Langues, Centre(s) de Ressources en Langues : quelles réalités se cachent derrière les termes / quels liens entre ces réalités ?
Authors: Chateau Anne 
Published: December 2024

Les termes « Centre de Langues » (CL) et « Centre de Ressources en Langues » (CRL) sont utilisés depuis environ une cinquantaine d’années. Une analyse rapide de leurs utilisations dans quelques-unes des publications qui leur ont été consacrées semble néanmoins indiquer qu’ils recouvrent plusieurs réalités. Ainsi, le site de Ranacles (Rassemblement National des Centres de Langues de l’Enseignement Supérieur) indique que l’association regroupe une soixantaine de « structures adhérentes, telles que des universités, des UFR ou Départements, des IUT, des Grandes Écoles, etc1 » Cette énumération des adhérents témoigne de leur diversité, comme Cazade le mentionnait déjà en 2003. L’ouvrage consacré au passé, présent et futur des CL, édité par Kronenberg en 2017, indique qu’il n’est pas plus aisé de définir ces concepts en anglais. Les résultats d’une enquête menée au printemps 2022 auprès des adhérents de CercleS (Confédération Européenne des Centres de Langues de l’Enseignement Supérieur) permettent dans cet article de faire le point sur les réalités se cachant derrière ces termes et d’appréhender les liens qui les unissent.
Sentiment de progression en (e‑)tandem : quelques pratiques favorisant l’apparition de ce sentiment
Authors: Hussard-Wang Jinjing 
Published: December 2024

Face à la demande grandissante des utilisateurs des centres de ressources en langues (CRL) pour apprendre en tandem ou e‑tandem, nous nous posons les questions suivantes : quelles compétences les apprenants développent-ils dans ce type d’interaction ? Quels sont les facteurs qui influencent le sentiment de progression langagière dans cette situation d’apprentissage ? Avec ces interrogations, nous avons mené une recherche par le biais d’un questionnaire. Les résultats montrent que les apprenants de tous les niveaux peuvent potentiellement développer des compétences linguistiques et le sentiment de progression en langue cible. Les facteurs qui influencent ce sentiment sont multiples, par exemple la qualité de l’interaction, l’aide du partenaire pendant les échanges ou encore la tenue d’un carnet de bord d’apprentissage. À partir de ces constats, nous avons essayé de proposer quelques pistes d’amélioration possibles pour mieux accompagner les futurs apprenants en tandem et e‑tandem.
Ethnographie photographique des déchets à Bamako et à Dakar : retour sur un protocole d’enquête
Authors: Diatta Patrice 
Published: December 2024

L’analyse des problèmes publics se concentre souvent sur les groupes d’acteurs plus ou moins organisés qui dominent les dynamiques de problématisation et de mise en politique d’enjeux donnés. A la suite de nombreux travaux en sciences sociales utilisant la photographie comme technique d’enquête qualitative combinée aux méthodes d’entretien et d’observation, l’approche de l’ethnographie photographique développée ici propose un regard complémentaire, attentif aux expériences des problèmes publics, vécues dans l’ombre par des populations moins mises en avant dans la littérature. Elle est basée sur des enquêtes, dans deux banlieues populaires, à Bamako (Mali) et à Dakar (Sénégal), menées auprès d’habitants, de professionnels, d’élus et de militants locaux sur les problèmes relatifs à la gestion des déchets ménagers, devenue un « problème public » officiel. J’ai donc pris l’option d’impliquer les enquêtés dans la production et dans l’interprétation des photos prises sur ce thème. Le matériau recueilli met en lumière notamment les interprétations et les stratégies différenciées des personnes rencontrées à l’égard de la situation problématique des déchets ménagers, et l’influence des saisons ou des configurations socio-territoriales dans leurs perceptions des problèmes. Il confirme ainsi la portée heuristique de la démarche photographique choisie, à condition de prendre certaines précautions.
Du lyrisme au lecteur : le désir de contemporanéité chez João Cabral et Ana Cristina Cesar
Authors: Siscar Marcos 
Published: December 2024

Cet article propose une lecture des essais de João Cabral de Melo Neto, en particulier « Poesia e composição », en mettant en avant les concepts de « norme » et de « lecteur ». Il s'agit de comprendre que la notion d'objectivité compositionnelle implique un souci politique lié à la nature critique de la poésie. La relecture de certains de ces éléments par Ana Cristina Cesar suggère que le débat sur le lyrisme a servi à expliciter les tâches que la poésie post-avant-garde s’est assignées au Brésil pour redéfinir son rôle historique.
Les factions façonnent le futur : causes, formes et impacts de la propagation d’organisations criminelles en Amazonie
Authors: Schönenberg Regine 
Published: December 2024

Les États, départements ou provinces d’Amazonie se sont toujours trouvés aux marges de leur État-nation en termes d’intégration juridique et institutionnelle. Lorsque les institutions et les lois arrivent jusqu’à ces confins, les premières sont généralement très faibles et les secondes inadéquates pour répondre aux problèmes locaux. Toutes deux ont en commun de ne pas reposer sur des formes locales de représentation. Au fil des siècles, cette situation a généré de nombreuses tensions entre les structures de pouvoir locales et nationales, la légitimité l’emportant généralement sur la légalité. Les réseaux d’échanges sociaux reflètent ces décisions fluctuantes et englobent également les activités illégales locales. Alors que les routes transnationales du trafic de cocaïne, intégrées aux routes du commerce local, traversent l’Amazonie depuis des décennies, des factions du sud du Brésil (Comando Vermelho, CV [Commando rouge], Primeiro Comando da Capital, PCC [Premier commando de la capitale]) ont récemment mis la main sur la gestion des activités commerciales illégales. Je m’intéresse aux causes, formes et impacts de la propagation en Amazonie d’organisations criminelles consolidées, généralement appelées factions. Quelles sont les relations entre ces factions, l’appareil de sécurité et les structures traditionnelles prédominantes de pouvoir ? Comment l’État et la société répondent-ils aux prises de contrôle territoriales ? Les factions ont-elles la capacité d’intimider des institutions étatiques amazoniennes déjà faibles et d’entraver davantage la gouvernance environnementale, en soutenant des programmes de gouvernance criminelle ? À partir d’une analyse approfondie de la littérature sur le sujet et d’entretiens qualitatifs, je conclus qu’en raison de leur forte évolution organisationnelle, les factions constituent une menace imprévisible pour les arrangements de pouvoir qui les ont précédés et, par conséquent, pour tout type de gouvernance.
The Virtual Environmental Challenge: Language for Specific Purposes Teaching and Learning in an International Context
Authors: Moore Michael , Evain Christine , Hawkridge Spencer 
Published: December 2024

The “Virtual Environmental Challenge” (VEC) project, an international virtual exchange (VE) experiment in language for specific purposes (LSP) teaching, emerged during COVID‑19 restrictions to educate masters-level language teachers-in-training at Rennes 2 Université, France. Focused on ecolinguistics and the UN’s 2030 Agenda language, it engaged first‑year master's students as “teamchers” guiding international participants, while second-year students played “mentors.” Beyond COVID‑19, the VEC, resembling challenge-based learning, allowed students to make progress in LSP acquisition. An assessment revealed participants’ acquisition of specialist language, academic advancement, and the project’s alignment with internationalisation at home policies (Evain & Chusseau, 2021; Gallagher & Savage, 2020; O'Dowd, 2018). The VEC, featuring VE LSP teaching, fostered peer tutoring, digital literacy, communication, and interdisciplinary skills. The “learning by doing” approach enhanced commitment, motivating students to explore new LSP topics in future editions.
Evaluation of Macula and Optic Disc of Adult Amblyopia Patients with Diverse Etiologies using Optical Coherence Tomography Angiography
Authors: Tosun Aylin , Kızıltunç Pınar B. , Atilla Huban 
Published: December 2024

PURPOSE:
To compare macula and optic-disc optical coherence tomography angiography (OCTA) metrics of adult amblyopic eyes with healthy controls and investigate whether these differ according to amblyopia etiology.

METHODS:
This cross-sectional study included 35 unilateral amblyopic adults (n = 35 eyes) and 35 age-matched healthy controls (n = 35 eyes). Amblyopia subgroups consisted of anisometropic (n = 12 eyes), strabismic (n = 12 eyes), and combined-mechanism amblyopia (n = 11 eyes). Foveal avascular zone area (FAZA), vessel density (VD), and retinal thickness were obtained using OCTA. Retinal thicknesses were measured at the fovea, parafovea, perifovea, and retinal nerve fiber layer. Foveal, parafoveal, perifoveal, whole-macula, intradisc, peripapillary, and whole-disc VD were recorded. Groups were compared regarding OCTA metrics after adjusting for axial length, spherical equivalent, age, gender, and signal quality index using a one-way analysis of covariance test.

RESULTS:
Amblyopic eyes had significantly lower foveal, parafoveal, perifoveal, whole-macula VD in superficial capillary plexus (SCP), and deep capillary plexus (DCP) than control eyes after adjusting for confounders (P < 0.05 for all). All amblyopia subgroups had significantly lower parafoveal, perifoveal, and whole-macula VD in SCP and DCP than control eyes after adjusting for confounders (P < 0.05 for all). There was no significant difference in retinal thickness, FAZA, intradisc VD, peripapillary VD, and whole-disc VD between amblyopic and control eyes, as well as amblyopia subgroups and control eyes.

CONCLUSION:
These results suggest that effect of amblyopia on macular microvasculature should be considered when interpreting OCTA metrics of adults with concomitant diseases. It also supports that adult amblyopic eyes of different etiology have similar microvascular features.
A cramping conundrum: Awareness, impact, and treatment-seeking behavior regarding dysmenorrhea among college students in central Kerala
Authors: Joseph Liza , Shafas Muhammed , Sebastian Shaliet Rose 
Published: December 2024

ABSTRACT

Background:
Characterized by severe cramping pain in the lower abdomen, lower back, and thighs, dysmenorrhea can significantly impact a woman’s quality of life, especially during her college years. Despite the significant impact, many girls hesitate to seek help for dysmenorrhea due to various factors such as normalization of menstrual pain, limited access to healthcare, social stigma, embarrassment and lack of awareness. By recognizing its prevalence, understanding its impact, and exploring effective management strategies, we can empower young women to navigate their menstrual cycles with confidence and achieve their full potential.

Objective:
To assess the awareness, impact and treatment seeking behaviour regarding Dysmenorrhea among college students in central Kerala.

Materials and Methods:
The present descriptive study was conducted among 258 young women aged between 18 and 35 years in Pathanamthitta district from July to December 2023. Knowledge regarding Dysmenorrhoea was scored. The proportion of dysmenorrhea, the impact of Dysmenorrhoea and the management strategies of dysmenorrhea were expressed as frequencies and percentages.

Results:
The overall prevalence of good knowledge about dysmenorrhea was 27% among study participants. The proportion of study participants suffering from dysmenorrhea was 78%. Majority of the study participants resorted to bed rest (40%) to tide through their menstrual pain.

Conclusion:
Raising the awareness among the youth could empower them to manage their pain effectively and recognize atypical symptoms earlier in time allowing for timely diagnosis and effective treatment.
Self-mutilating behavior in a 2-year-old girl unveiling the diagnosis of a rare entity – Midface toddler excoriation syndrome
Authors: Anjum Fida , Pinto Malcolm , Ajmal Abdul Khader Mohamed , Asfiya Amina 
Published: December 2024

ABSTRACT
Midface toddler excoriation syndrome (MiTES) is a less severe form of hereditary sensory-autonomic neuropathy Type VIII characterised by self-inflicted excoriations. This condition frequently affects toddlers, who may exhibit very high levels of pain tolerance. A 2-year-old girl presented with itchy lesions on the face of 6 months duration. The diagnosis of MiTES was established by ruling out other differential diagnoses based on history and clinical examination. This case emphasizes the need for early recognition of this entity.
“Can computed tomographic angiography” solve the puzzle of complexities in the pediatric complex congenital heart disease’s
Authors: Iqbal Javaid , Rasool Sheikh Riaz , Gojwari Tariq Ahmad , Choh Naseer Ahmad , Rafiq Moonisah 
Published: December 2024

ABSTRACT

Background:
Accurate evaluation of cardiac and extracardiac anomalies in complex congenital heart diseases (CHDs) is vital for diagnosis and management. Trans-thoracic echocardiography (TTE) is generally accepted as the primary imaging technique for the evaluation of CHD; however being operator-dependent and acoustic window limitations, there can be significant hindrances in better evaluation and depiction of cardiac and extracardiac malformations. Computed tomographic angiography (CTA) has been proven to be a competent noninvasive diagnostic modality in the delineation of both cardiac and extracardiac malformations with high accuracy and effectivity. The aims and objectives were to evaluate the role of CTA in the diagnosis and assessment of cardiovascular and relevant extracardiac systemic malformation in cases of complex CHD and its comparison to transthoracic echocardiography, with subsequent calculation of average effective radiation dose for each individual case. The purpose of the study was to ascertain the role of Cardiac CTA in unraveling these twists and turns, and to know whether additional radiation dose is justified in the evaluation of associated extracardiac systemic anomalies.

Materials and Methods:
Fifty patients with complex CHD were included in the study, who underwent TTE and nongated CTA over the period of 2 years. CTA and TTE findings were recorded and compared with the Surgical and Cardiac catheter angiographic findings, which were taken as the gold standard. Scans were also evaluated for relevant extracardiac systemic abnormalities, and effective radiation dose was calculated for each scan.

Results:
Fifty patients with male-to-female ratio of 29:21 and a mean age of 2.7 years. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy for diagnosing CHD were 95.83%, 100%, 100%, 99.35%, and 99.44% for CTA and 76.96%, 99.78%, 98.24%, 96.51%, and 96.69% for TTE respectively. We found that CTA has more sensitivity, specificity, NPV, PPV, and diagnostic accuracy than TTE, not only in intracardiac but also in extracardiac and systemic malformations. The total mean effective radiation dose calculated was 0.85 ± 0.19 mSv.mGy−1.cm−1 and is compared with previous comparable studies. Effective radiation dose was significantly reduced by employing low radiation protocols. The additional findings detected on CTA in a significant proportion of patients had changed the operative course for surgeons.

Conclusions:
CTA has important clinical value in the diagnosis and management of complex CHD, complementing and extending the findings of TTE. Hence, it is vital as part of an adequate preoperative assessment algorithm in cases of complex CHD and can’t be replaced by TTE. However, radiation dose remains a limiting factor, this can be overcome to some extent by employing low radiation dose protocols.