bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bayesian Cross-matching of High Proper-motion Stars in Gaia DR2 and Photometric Metallicities for ∼1.7 million K and M Dwarfs
Authors: Medan Ilija , Lépine Sébastien , Hartman Zachary 
Published: May 2021

Abstract
We present a Bayesian method to cross-match 5,827,988 high proper-motion Gaia sources (μ > 40 mas yr−1) to various photometric surveys: Two Micron All Sky Survey, AllWISE data release from the Wide-field Infrared Explorer (WISE) mission, Galaxy Evolution Explorer, Radial Velocity Experiment, Sloan Digital Sky Survey, and Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). To efficiently associate these objects across catalogs, we develop a technique that compares the multidimensional distribution of all sources in the vicinity of each Gaia star to a reference distribution of random field stars obtained by extracting all sources in a region on the sky displaced 2′. This offset preserves the local field stellar density and magnitude distribution, allowing us to characterize the frequency of chance alignments. The resulting catalog with Bayesian probabilities >95% has a marginally higher match rate than current internal Gaia data release 2 (DR2) matches for most catalogs. However, a significant improvement is found with Pan-STARRS, where ∼99.8% of the sample within the Pan-STARRS footprint is recovered, as compared to a low ∼20.8% in Gaia DR2. Using these results, we train a Gaussian process regressor to calibrate two photometric metallicity relationships. For dwarfs of 3500 < T
eff < 5280 K, we use metallicity values of 4378 stars from the Apache Point Observatory Galactic Evolution Experiment and Hejazi et al. to calibrate the relationship, producing results with a 1σ precision of 0.12 dex and few systematic errors. We then indirectly infer the metallicity of 4018 stars with 2850 < T
eff < 3500 K, which are wide companions of primaries whose metallicities are estimated with our first regressor, to produce a relationship with a 1σ precision of 0.21 dex and significant systematic errors. Additional work is needed to better remove unresolved binaries from this second sample to reduce these systematic errors.
Broadband Stability of the Habitable Zone Planet Finder Fabry–Pérot Etalon Calibration System: Evidence for Chromatic Variation
Authors: Terrien Ryan C. , Ninan Joe P. , Diddams Scott A. , Mahadevan Suvrath , Halverson Samuel , Bender Chad , Fredrick Connor , Hearty Fred , Jennings Jeff , Metcalf Andrew J. , Monson Andrew , Roy Arpita , Schwab Christian , Stefánsson Guđmundur 
Published: May 2021

Abstract
The comblike spectrum of a white light–illuminated Fabry–Pérot etalon can serve as a cost-effective and stable reference for precise Doppler measurements. Understanding the stability of these devices across their broad (hundreds of nanometers) spectral bandwidths is essential to realizing their full potential as Doppler calibrators. However, published descriptions remain limited to small bandwidths or short time spans. We present an ∼6 month broadband stability monitoring campaign of the Fabry–Pérot etalon system deployed with the near-infrared Habitable Zone Planet Finder (HPF) spectrograph. We monitor the wavelengths of each of ∼3500 resonant modes measured in HPF spectra of this Fabry–Pérot etalon (free spectral range = 30 GHz, bandwidth = 820–1280 nm), leveraging the accuracy and precision of an electro-optic frequency comb reference. These results reveal chromatic structure in the Fabry–Pérot mode locations and their evolution with time. We measure an average drift on the order of 2 cm s–1 day−1, with local departures up to ±5 cm s–1 day−1. We discuss these behaviors in the context of the Fabry–Pérot etalon mirror dispersion and other optical properties of the system and the implications for the use of similar systems for precise Doppler measurements. Our results show that this system supports the wavelength calibration of HPF at the ≲10 cm s−1 level over a night and the ≲30 cm s−1 level over ∼10 days. Our results also highlight the need for long-term and spectrally resolved study of similar systems that will be deployed to support Doppler measurement precision approaching ∼10 cm s−1.
Speckle Interferometry at the OAN-SPM México: Multiband Astrometry of Double Stars Measured in 2018 and 2019
Authors: Guerrero C. A. , Zepeda C. E. , Souza T. B. , Nájera M. R. , Fernandes M. Borges , Hernández-Águila J. B. , Carvajal J. C. , Castro-Chacón J. H. , Hernández-Valencia B. , Reyes-Ruiz M. , Sánchez E. , Silva J. S. 
Published: May 2021

Abstract
In this paper we present multiband speckle interferometric measurements of double stars performed at the 2.1 m telescope of the Observatorio Astronómico Nacional, San Pedro Mártir, México. We focused our efforts on objects from the Washington Double Star Catalog that were observed during five runs allocated in 2018 and 2019. We report here 2101 astrometric and 2027 photometric measurements of 631 pairs, with angular separations ranging from 0.″05 to 6.″09, including 1622 measurements with separations smaller than 1″, and a magnitude difference up to 5.99 mag through the V filter, 5.46 mag for the R filter, and 5.85 mag for the I filter. We estimated a mean error in separation of 12 mas, 1.°1 in position angle, and 0.14 mag for the magnitude difference. We confirmed 58 double stars discovered by Hipparcos. For the first time we are presenting astrometric measurements for 7 systems listed at the Washington Double Star Catalog as being suspected binaries, which did not have a secondary confirmation, and 15 stars with only one published measurement. We identified a new close companion with a mean angular separation of 0.″10, detected in a previously known pair. Finally, we present a correction to two previously published orbital solutions of two visual binaries.
Solar Cycle, Seasonal, and Dust-storm-driven Variations of the Mars Upper Atmospheric State and H Escape Rate Derived from the Lyα Emission Observed by NASA’s MAVEN Mission
Authors: Qin Jianqi 
Published: May 2021

Abstract
An accurate and systematic quantification of the state variables in the Mars upper atmosphere is important for the study of Mars volatile evolution. In this study, we perform a comprehensive analysis of the Lyα limb scans observed by MAVEN during Martian years 32–35 to quantify the Mars upper atmospheric temperature, the CO2 density, the H density, and the H thermal escape rate. A previously uncharacterized feature of the proton aurora at Mars is reported, which affects the overall shape of the limb scans without introducing peak intensity structures. Our inversion results excluding such scans demonstrate an unambiguous and systematic consistency of the Mars exobase temperature (∼150–280 K) derived from the dayside Lyα emission with those derived from the CO2
+ airglow emission and those from atmospheric drag measurements, resolving a long-standing discrepancy between those different estimates. The temperature is shown to be highly predictable over different solar cycles and seasons. However, the H density and escape rate can be episodically enhanced by a factor of ∼2–3, likely driven by dust storms that coincided with the enhancements. During the three Martian years, the averaged thermal escape rates between Mars solar longitude 0°–180° and 210°–330° are 0.6 × 107 cm−2 s−1 and 9.0 × 107 cm−2 s−1, respectively, a factor of 15 seasonal difference, with a factor of ∼7.5 and ∼2 due to temperature and H density variations, respectively. These temperatures and thermal escape rates derived from the thermospheric Lyα emission are generally lower than those derived from the exospheric Lyα emission in the literature, indicating the presence of a hot H population in the Mars exosphere.
Fast Ejecta as a Potential Way to Distinguish Black Holes from Neutron Stars in High-mass Gravitational-wave Events
Authors: Most Elias R. , Papenfort L. Jens , Tootle Samuel D. , Rezzolla Luciano 
Published: May 2021

Abstract
High-mass gravitational-wave events in the neutron-star mass range, such as GW190425, have recently started to be detected by the LIGO/Virgo detectors. If the masses of the two binary components fall in the neutron-star mass range, such a system is typically classified as a binary neutron-star system, although the detected gravitational-wave signal may be too noisy to clearly establish a neutron-star nature of the high-mass component in the binary and rule out a black hole–neutron star system for such an event. We show that high-mass binary neutron-star mergers with a very massive neutron-star primary close to the maximum-mass limit, m
1 ≳ 2.2 M
⊙, produce fast dynamical mass ejecta from the spin-up of the primary star at merger. By simulating the merger of black hole–neutron star systems of exactly the same masses and spins, we show that these fast ejecta are entirely absent if the primary is instead a black hole. In addition, we find that both systems leave almost identical amounts of baryon mass behind, which is not immediately accreted by the black hole. This implies that both systems will likely have comparable electromagnetic afterglow emission stemming from the remnant disk. Hence, fast ejecta at merger have the potential to distinguish neutron stars from black holes in high-mass mergers, although these ejecta may be challenging to detect observationally.
Vers des modalités transitionnelles d’accompagnement à la recherche
Authors: Blanchard-Laville Claudine 
Published: May 2021

Il est habituellement question de diriger une thèse ; l’auteure préfère utiliser l’expression accompagner la réalisation d’une thèse. Ainsi, dans cet article, elle explicite la signification qu’elle attribue à la notion d’accompagnement. Ce métier d’accompagnante de thèses, l’auteure montre qu’elle l’a appris par l’expérience et en détaille les modalités concrètes. Elle suggère que chaque aventure avec un·e doctorant·e suppose une rencontre assortie d’une forme de contrat de départ qui comporte avant tout l’acceptation d’un travail élaboratif autour des mouvements psychiques convoqués par l’avancée du travail ; lequel se révèle très impliquant lorsqu’il s’agit d’une thèse clinique d’orientation psychanalytique. L’accompagnante se fait alors le témoin de la métamorphose du doctorant·e en chercheur·e, tout en assumant pendant un temps le rôle d’objet transformationnel au sens de Christopher Bollas avant d’en venir à des modalités transitionnelles d’accompagnement.
Jouer dans un « Jardin d’enfants » : un en-jeu de lien avec les plus petits
Authors: Pirone Ilaria 
Published: May 2021

Cet article présente une expérience clinique dans un lieu appelé « Jardin d’enfant » à l’intérieur d’un centre médico-psycho-pédagogique avec des groupes thérapeutiques et d’observation par le jeu pour des enfants entre deux et cinq ans. À l’appui des théorisations de Fröbel, Freud, Lacan et Winnicott, l’acte de jouer est entendu dans cette contribution comme un des moyens possibles d’observer l’enfant afin de comprendre où il en est de la construction de son rapport à soi et au monde, de ses impasses et de ses questions, ceci dans le but de tisser un lien lui permettant d’exister. Pour le thérapeute tout comme pour l’éducateur, être capable de jouer signifie être capable d’inventer et de trouver la force de résister aux injonctions d’hyper normalisation auxquelles le champ de l’éducation et du soin sont de plus en plus soumis, ce qui peut leur éviter, dans ces métiers du lien, de faire l’économie de chercher, changer, transformer.
Institution de l’écriture ; écriture de l’institution
Authors: Rouzel Joseph 
Published: May 2021

Les éducateurs sont saturés de demandes d’écrits en tous genres, de la note d’incident au juge au rapport de synthèse, en passant par le projet personnalisé, etc. A priori la demande est légitime : qu’avez-vous fait concrètement de l’argent public, en quoi cela a-t-il servi aux usagers que l’on vous a confiés ? Quels sont les résultats de l’action ? Etc. Mais c’est une exigence qui peut s’avérer une chance à saisir pour les éducateurs pour faire valoir leur action, qui la plupart du temps n’est pas visible, la donner à lire, mettre au jour un métier complexe auprès des dits « usagers ».
Impact de l’écriture comme tiers dans l’accompagnement et sur l’évolution… des jeunes en parcours d’insertion en EPIDE
Authors: Janszen Stéphane 
Published: May 2021

Mes travaux de recherche analysent les résultats d’une expérimentation portant sur l’usage du Journal des moments introduit par Rémi Hess. J’ai utilisé ce journal comme support d’accompagnement auprès des jeunes adultes dont j’ai assuré le suivi en tant qu’éducateur spécialisé, au sein d’un organisme d’insertion d’inspiration militaire dans un centre epide (Établissement pour l’insertion dans l’emploi). Ce dernier prend en charge des adultes de 18 à 25 ans sans qualification, en risque de marginalisation, ayant accepté de s’engager dans un programme d’insertion professionnelle. Ces jeunes ayant vécu un parcours d’échec scolaire, en situation d’illettrisme parfois, n’ont pas trouvé d’alternative que de s’éloigner de leurs lieux de vie et d’accepter les contraintes d’une vie d’inspiration militaire. Les résultats mettent en évidence les changements opérés chez ces apprentis diaristes et la façon dont l’écriture a constitué une véritable ressource, y compris en produisant des textes parfois à peine lisibles, devenus cependant le support privilégié des échanges avec l’éducateur. La médiation de l’écriture a favorisé un véritable travail de réflexivité, à la fois rétrospectif et prospectif, en acceptant de se projeter dans l’avenir.
Flagrant délit d’écriture
Authors: Lani-Bayle Martine 
Published: May 2021

Dans toutes les formations, il est demandé d’écrire : pour prendre des notes, restituer des savoirs, construire une argumentation en vue d’une validation… comme si l’écriture allait de soi et ne faisait que constater, exposer ou communiquer. Or notre rapport à l’écriture a en amont une histoire et, au moment où le texte se fait, il n’est pas neutre : en se formant, conjointement il forme les savoirs qu’il transforme tout en formant, tant la personne qui écrit que celle qui lira. L’écriture dès lors, la « vraie », en tant qu’« auteur », peut être considérée et développée comme un puissant vecteur, tant de formation et de construction de savoirs que de recherche – et donc, elle gagne à être travaillée en ce sens et pas simplement comme instrument. Le problème est que bien peu osent vraiment écrire, ignorant ou ne se doutant pas qu’ils le peuvent, s’arrêtant sur la moindre difficulté venue ou sur la redoutée « page blanche ». Alors, comment franchir ces réserves ? Certes, il n’y a pas de « recettes », pas de marche à suivre qui apporterait à coup sûr un résultat escompté. Mais il est bien des façons de s’y mettre qui peuvent impulser notre écriture, avec des effets retour tant sur la personne qui suit sa plume que sur celle qui lira.
Élaboration des excitations traumatiques en addictologie : hyperexcitabilité, excitations addictives et contenance groupale
Authors: Sinanian Alexandre 
Published: May 2021

À partir de la compréhension de la dynamique groupale d’un dispositif d’analyse des pratiques en addictologie, nous discuterons des enjeux relationnels à l’œuvre chez des professionnels pour lesquels la question de l’ excitation est centrale. Nous observerons les ressources mobilisées et préciserons ce qui nous paraît requis du cadre, tant du groupe d’analyse des pratiques que de l’institution, pour qu’il soit « utilisable » dans ces cliniques mettant à l’épreuve la contenance de l’excitation. Lorsque le cadre apporte un sentiment de sécurité suffisant pour représenter un lieu tiers à même de soutenir le professionnel, il permet de mettre en lumière la fonction médium malléable requise pour recevoir et supporter des excitations envahissantes et les affects extrêmes de leurs patients pouvant être vécues par celui qui le reçoit comme une forme de destructivité à laquelle il faut survivre.
Cliniques de l’institution et du groupe… dans la pratique pionnière d’August Aichhorn auprès d’adolescents délinquants
Authors: Houssier Florian , Pfister Catherine 
Published: May 2021

De 1918 à 1923, August Aichhorn dirige un foyer éducatif pour enfants et adolescents dans la banlieue nord de Vienne. Soutenu par S. Freud qui dédicace son ouvrage Jeunesse à l’abandon en 1925, sa pratique originale et reconnue a déjà fait l’objet de nombreux travaux, tant dans les champs psychanalytique que pédagogique. Pourtant, il est rare que ces travaux mettent l’accent sur les aspects groupaux et institutionnels de sa pratique, dimensions probablement oblitérées par le caractère « magique » de sa pratique. Nous articulons les dimensions institutionnelle et groupale avec plusieurs illustrations cliniques, notamment en explorant la dynamique du groupe des adolescents violents.
Comparison of Monaco treatment planning system algorithms and Monte Carlo simulation for small fields in anthropomorphic RANDO phantom
Authors: Tugrul Taylan 
Published: May 2021

Background:
In this study, the dose distributions obtained by the algorithms used in Monaco treatment planning system (TPS) and Monte Carlo (MC) simulation were compared for small fields in the anthropomorphic RANDO phantom, and then, the results were analyzed using the gamma analysis method.

Materials and Methods:
In the study, dose distributions obtained from the collapse cone algorithm, MC algorithm, and MC simulation were examined. The EGSnrc was utilized for MC simulation.

Results:
In radiation fields smaller than 3 cm × 3 cm, the doses calculated by the CC algorithm are particularly high in the region of lung/soft-tissue interfaces. In the region of soft-tissue/vertebral interfaces, the doses calculated by the CC algorithm and the MC algorithm are compatible with the MC simulation. For each algorithm, the main reason for the non-overlapping dose curves in small fields compared to MC simulation is that the lateral electronic equilibrium loss is not taken into account by the algorithms.

Conclusion:
The doses calculated by the algorithms used in TPS may differ, especially in environments where density changes are sharp. Even if the radiation dose from different angles is calculated similarly in the target area by the algorithms, the calculated doses in the tissues in each radiation field path may be different. Therefore, to increase the quality of radiotherapy and to protect critical organs more accurately, the accuracy of the algorithms in TPS should be checked before treatment, especially in multi-field treatments such as stereotactic body radiation therapy and intensity-modulated radiotherapy for tumors in the abdominal region.
Management of Vocal Complications Post Thyroidectomy at King Abdullah Medical City from 2011 to 2018
Authors: Alghamdi Saeed Abdullah , Alyamani Amani Mohammad , Aljohani Rawan Rajallah , Benjabi Wajd Mohammad , Althobaiti Raghad Abdulrahman , Takrooni Walaa Abdullah , Alotaibi Yousef Zaben , Badr Khalid Mahmoud , Abdelmonim Sherif Kamel 
Published: May 2021

Background:
The most common critical complication after thyroidectomy is vocal cord dysfunction. The leading cause of that problem is injury to the recurrent laryngeal nerve (RLN).

Materials and Methods:
A retrospective cohort study was applied to 266 patients who underwent thyroidectomy procedures at King Abdullah Medical City between the years of 2011 and 2018. Patients with preexisting vocal cord abnormalities and neurological conditions affecting the voice or swallowing ability were excluded. Data were analyzed using the Statistical Package for the Social Sciences (SPSS) (IBM SPSS Statistics V21.0).

Results:
Out of the 266 patients, the incidence of RLN injury was significantly higher if the patient had a previous thyroid surgery, especially among cancer patients (30.4% in cancer vs. 9.2% in noncancer, P = 0.001). Patients who presented with postoperative vocal complications were only five; four of them developed temporary unilateral vocal cord palsy (1.6%) and were managed with speech therapy, however, one patient had a permanent bilateral vocal cord palsy (0.4%) that was managed with tracheostomy and laser vocal cordotomy.

Conclusion:
The incidence of vocal cord complication due to thyroidectomies was comparatively rare. Thyroid complications were present more in cancer patients.
How Harmful is Your Personal Listening Device
Authors: Bakshi Satvinder Singh , Kalidoss Vinoth Kumar , Ramesh Seepana , Shankar M. Kiruba 
Published: May 2021

Objectives:
Over 1 billion people globally are at risk of hearing loss due to unsafe listening practices. The most common unsafe practice is using personal listening devices (PLDs), especially along with headphones. This study aimed to determine the knowledge regarding hearing loss due to the use of PLDs and practice concerning these devices among the college-going population (18–25 years) in India.

Methodology:
A cross-sectional study was conducted among college-going students aged 18–25 years. Data were collected using an anonymous web-based self-administered questionnaire.

Results:
A total of 255 male and 133 female students were enrolled (n = 388). Most participants listened to music more than an hour a day and 44% listened to loud and very loud music. More than half chose to ignore the warning message on their PLD and around 30% had never come across any educational material regarding the risk of hearing loss due to the use of PLDs.

Conclusion:
The findings indicate the need for the development of more targeted educational material and outreach programs to reduce the burden of hearing loss due to the use of PLDs.
Species Composition, Dominance and Similarity Index of Macrobrachium vollehovenii and M. Felicinum in Akor River, Ibere, Ikwuano, Nigeria
Authors: Ukagwu J.I , Anyanwu D.C , Orgi M.C , Ohaturonye S , Dan-Uchegbu C 
Published: May 2021

Occurrence and abundance of Macrobrachium vollehovenii and Macrobrachium felicinum were studied in Akor river, Ibere, Ikwuano, Nigeria. The area density method of sample collection was employed. The river was delineated into three stations: A, B and C and prawn specimen were collected fortnightly. Sample collection lasted for 24 months. Species composition, dominance and similarity index were calculated using standard methods. Chi square test was used to compare the dominance of both species in the River. Results showed that station A had a total catch composition of 1,407 (29.4%), station B recorded 1,689 (34.73%) and the highest catch was obtained in station C having 1,763 (36.2%). The overall total catch of 4,859 was recorded. Results also showed that M. vollehovenii dominated the river with a total number of 3,620 (75%) while M. felicinum had a total catch of 1,239 (25%). Ponderal index was 53.7 and 44.7 for M. vollehovenii and M. felicinum respectively and a similarity index of 1 for both species was observed. Statistical analysis showed that there was significant difference (p<0.05) between dominance of these species in Akor river. Inference from the results showed that these species are present as non-target organism in this river.
Keywords: Occurrence, abundance, Macrobrachium species, fresh water, crustacean