bluuebunny/crossref_metadata_2025_split huggingface dataset:
Voluntariado y las diferentes motivaciones que lo impulsan
Authors: Chocobar Reyes Mg. Emilio José , González Rodríguez Lesbia Isabel 
Published: October 2023

El artículo de revisión buscó responder la pregunta ¿Cuáles son las diferentes motivaciones que impulsan el voluntariado? y como objetivo determinar las principales motivaciones que tienen las personas para realizar voluntariado. La metodología empleada fue cualitativa, bajo el formato IMRyD, de revisión no sistemática de la literatura científica en las bases de datos de acceso cerrado EbscoHost y ProQuest y de acceso abierto Scielo con un total de 18 artículos seleccionados bajo un muestreo no probabilístico intencional que tuvo como criterios de inclusión sólo los artículos en inglés, español y portugués, que respondieran la pregunta de investigación, entre los años 2018 al 2023 y con identificador DOI. Los resultados demostraron que los autores señalaron la existencia de diferentes motivadores para realizar el voluntariado, siendo una actividad polimotivada y que, en su mayoría, se pueden agrupar en motivadores internos (intrínsecos) propios de la persona como la fe, los valores, el fuerte deseo personal, la superación de problemas, la sensación de éxito, las experiencias vividas, etc. y externos (extrínsecos) como la influencia de la familia, amigos, la comunidad, el ambiente donde se desarrolla el voluntariado, entre otros. Se concluyó que existen diferentes motivadores para realizar el voluntariado que deberían ser tomados muy en cuenta para realizar una correcta combinación de estrategias que consideren ambos aspectos y poder captar y retener más voluntarios haciendo sostenibles los diversos programas ejecutados. Las limitaciones fueron el acceso cerrado que tienen otras bases de datos importantes que no pudieron ser incluidas.
Retrospective Assessment of Forensic Facts Under 18 Years of Age in İzmir
Authors: TUNÇEZ Ferhat Turgut , ERGÜN YEGEN Ece , GÜLMEZ ÖZ Derya , KILIÇÇIOĞLU Doğu Barış 
Published: October 2023

Aim: The aim of this study was to examine the cases under the age of 18 who applied to the forensic medicine outpatient clinic of our hospital in İzmir.
Material and Methods: Among the 6,492 reports prepared for the patients who applied to İzmir Katip Çelebi University, Atatürk Training and Research Hospital Forensic Medicine Polyclinic between January 2019 and January 2022, 471 final reports prepared for forensic cases under the age of 18; age, gender, type of incident, area of injury, according to TCK 86 law clause; It was examined retrospectively with parameters such as whether it is life-threatening or not, and whether it can be eliminated with a simple medical intervention or not.
Results: In our study, 471 reports were examined; The most common age was 18, the mean age was 14, the number of girl cases was 203 (43.1%), the number of male cases was 268 (56.9%), the most common type of event was the assault, while traffic accidents were the second most frequent, the most frequently injured body area in cases under 18 years old was the extremities in 154 (32.7%), followed by head injuries in 101 (21.4%) cases, and life-threatening injuries in 19 (4%) cases. It was found that it was seen most frequently in July and least in April.
Conclusion: The data determined in our study were in parallel with similar studies in the literature, while the most common cause of death in autopsy series was determined as traffic accident, it was seen that the most common cause of injury in outpatients who applied to our polyclinic was assault.
Evaluation of the Effect of SARS-COV-2 Infection During Pregnancy on Fetal Doppler Ultrasound Parameters: A Prospective Study
Authors: ÖZER Mehmet , ÖZER Pınar Tuğçe , OĞLAK Süleyman Cemil , İLERİ Alper , EMİRALİOĞLU ÇAKIR Zübeyde , SEVER Barış , ALDEMİR Onur Süleyman , KANTARCI Sercan , GÜLSEREN Varol , PALA Halil Gürsoy 
Published: October 2023

Aim: The fetal effects of severe acute respiratory syndrome coronavirus-2 (SARS-COV-2) infection have been the subject of controversy since the beginning of the pandemic. We aimed to investigate the effect of SARS-COV-2 infection on fetal Doppler parameters.
Material and Methods: This prospective case-control study was conducted at İzmir Tepecik Training and Research Hospital between September 1, 2021, and June 1, 2022, on pregnant women confirmed to have SARS-CoV-2 by RT-PCR testing. Pregnant women who had mild to moderate coronavirus disease 2019 (COVID-19) infection during pregnancy were compared with a control group of pregnant women not infected with the COVID-19 virus. All Doppler and fetal biometry ultrasound assessments between 34 and 37 weeks of gestation were performed in our unit.
Results: Pregnant women infected and not infected with COVID-19 were demographically homogeneous. When the groups were compared in terms of fetal Doppler parameters, including left and right uterine artery (UtA) pulsatility index (PI), middle cerebral artery (MCA) PI, and systolic/diastolic ratio (S/D), as well as umbilical artery (UA) S/D and PI, no statistically significant difference was observed (p>0.05).
Conclusion: We consider that mild to moderate COVID-19 does not affect Doppler ultrasound parameters and fetal well-being during pregnancy.
The Iron Yield of Core-collapse Supernovae
Authors: Rodríguez Ósmar , Maoz Dan , Nakar Ehud 
Published: October 2023

Abstract
We present a systematic analysis of 191 stripped-envelope supernovae (SE SNe), aimed at computing their 56Ni masses from the luminosity in their radioactive tails (

M

Ni

tail

) and/or in their maximum light, and the mean 56Ni and iron yields of SE SNe and core-collapse SNe. Our sample consists of SNe IIb, Ib, and Ic from the literature and from the Zwicky Transient Facility Bright Transient Survey. To calculate luminosities from optical photometry, we compute bolometric corrections using 49 SE SNe with optical and near-IR photometry, and develop corrections to account for the unobserved UV and IR flux. We find that the equation of Khatami & Kasen for radioactive 56Ni-powered transients with a single free parameter does not fit the observed peak time–luminosity relation of SE SNe. Instead, we find a correlation between

M

Ni

tail

, peak time, peak luminosity, and decline rate, which allows for measuring individual 56Ni masses to a precision of 14%. Applying this method to the whole sample, we find, for SNe IIb, Ib, and Ic, mean 56Ni masses of 0.066 ± 0.006, 0.082 ± 0.009, and 0.132 ± 0.011 M
⊙, respectively. After accounting for their relative rates, for SE SNe as a whole, we compute mean 56Ni and iron yields of 0.090 ± 0.005 and 0.097 ± 0.007 M
⊙, respectively. Combining these results with the recent Type II SN mean 56Ni mass derived by Rodríguez et al., core-collapse SNe, as a whole, have mean 56Ni and iron yields of 0.055 ± 0.006 and 0.058 ± 0.007 M
⊙, respectively. We also find that radioactive 56Ni-powered models typically underestimate the peak luminosity of SE SNe by 60%–70%, suggesting the presence of an additional power source contributing to the luminosity at peak.
Implications of Narrow Spectra of Fast Radio Bursts
Authors: Yang Yuan-Pei 
Published: October 2023

Abstract
Fast radio bursts (FRBs) are millisecond-duration radio transients with extremely high brightness temperatures at cosmological distances, and the physical origin and the radiation mechanism of FRBs are still unknown. The observed spectral bandwidth of some FRBs appeared narrow compared with their peak frequencies, which could be used to constrain the radiation mechanism and the astrophysical environment of FRBs. In this work, we investigate some of the possible physical origins of the narrow spectra from the perspectives of intrinsic radiation mechanisms, coherent processes, radiative transfers, and interference processes. We find that: (1) If the observed narrow spectra of FRBs are attributed to the intrinsic radiation mechanism by a single charged particle, the particle’s deflection angle should be much smaller than the radiation beaming angle. (2) Coherent process can cause narrow spectra. For the bunching mechanism, the narrow spectra might arise from the radiating bunches with a quasiperiodic distribution. For the maser mechanism, the negative absorption process can naturally cause a narrow spectrum. (3) Most absorption and scattering processes seem not to significantly change the observed spectra based on the current observation of some FRB repeaters. (4) Scintillation and plasma lensing in the FRB source environment can modulate the spectra, leading to the narrow spectra and the burst-to-burst variation of spectra. A planet-like object can generate the spectral modulation via gravitational lensing at the gigahertz band, but the observed burst-to-burst variation of the spectra does not support this scenario.
A Method to Measure Photometries of Moderately Saturated UVOT Sources
Authors: Zhou Hao , Jin Zhi-Ping , Covino Stefano , Fan Yi-Zhong , Wei Da-Ming 
Published: October 2023

Abstract
For bright transients such as gamma-ray bursts (GRBs), the Ultra-Violet/Optical Telescope (UVOT) operates under event mode at early phases, which records incident positions and the arrival time for each photon. The event file is able to be screened into many exposures to study the early light curve of GRBs with a high time resolution, including the rapid brightening of the UV/optical emission in particular. Such a goal, however, is hampered for some extremely bright GRBs by the saturation in UVOT event images. For moderately saturated UVOT sources, in this work we further develop the method proposed in Jin et al. to recover their photometries. The basic idea is to assume a stable point-spread function of UVOT images, for which the counts in the core region (i.e., an aperture of a radius of 5″) and the wing region (i.e., an annulus ranging from 15″–25″) should be constant, and the intrinsic flux can be reliably inferred with data in the ring. We demonstrate that in a given band, a tight correlation does hold among the background-removed count rates in the core and the wing. With the new method, the bright limit of measuring range for UVOT V and B bands increases by ∼1.7 mag, while only by ∼0.7 mag for the U band due to the lack of bright calibration sources. Systematic uncertainties are ∼0.2 mag for the V, B, and U bands.
Carbon-bearing Molecules in a Possible Hycean
Atmosphere
Authors: Madhusudhan Nikku , Sarkar Subhajit , Constantinou Savvas , Holmberg Måns , Piette Anjali A. A. , Moses Julianne I. 
Published: October 2023

Abstract
The search for habitable environments and biomarkers in exoplanetary atmospheres
is the holy grail of exoplanet science. The detection of atmospheric signatures
of habitable Earth-like exoplanets is challenging owing to their small
planet–star size contrast and thin atmospheres with high mean molecular weight.
Recently, a new class of habitable exoplanets, called Hycean worlds, has been
proposed, defined as temperate ocean-covered worlds with H2-rich
atmospheres. Their large sizes and extended atmospheres, compared to rocky
planets of the same mass, make Hycean worlds significantly more accessible to
atmospheric spectroscopy with JWST. Here we report a transmission spectrum of
the candidate Hycean world K2-18 b, observed with the JWST NIRISS and NIRSpec
instruments in the 0.9–5.2 μm range. The spectrum
reveals strong detections of methane (CH4) and carbon dioxide
(CO2) at 5σ and 3σ confidence, respectively, with high volume mixing
ratios of ∼1% each in a H2-rich atmosphere. The abundant
CH4 and CO2, along with the nondetection of ammonia
(NH3), are consistent with chemical predictions for an ocean
under a temperate H2-rich atmosphere on K2-18 b. The spectrum also
suggests potential signs of dimethyl sulfide (DMS), which has been predicted to
be an observable biomarker in Hycean worlds, motivating considerations of
possible biological activity on the planet. The detection of CH4
resolves the long-standing missing methane problem for temperate exoplanets and
the degeneracy in the atmospheric composition of K2-18 b from previous
observations. We discuss possible implications of the findings, open questions,
and future observations to explore this new regime in the search for life
elsewhere.
CEERS MIRI Imaging: Data Reduction and Quality Assessment
Authors: Yang 杨 G. 光 , Papovich C. , Bagley M. B. , Ferguson H. C. , Finkelstein S. L. , Koekemoer A. M. , Pérez-González P. G. , Arrabal Haro P. , Bisigello L. , Caputi K. I. , Cheng Y. , Costantin L. , Dickinson M. , Fontana A. , Gardner J. P. , Grazian A. , Grogin N. A. , Harish S. , Holwerda B. W. , Iani E. , Kartaltepe J. S. , Kewley L. J. , Kirkpatrick A. , Kocevski D. D. , Kokorev V. , Lotz J. M. , Lucas R. A. , Navarro-Carrera R. , Pentericci L. , Pirzkal N , Ravindranath S. , Rinaldi P. , Shen L. , Somerville R. S. , Trump J. R. , de la Vega A. , Wilkins S. M. , Yung L. Y. Aaron 
Published: October 2023

Abstract
The Cosmic Evolution Early Release Science Survey (CEERS), targeting the Extended Groth Strip extragalactic field, is one of the James Webb Space Telescope Director’s Discretionary Early Release Science programs. To date, all observations have been executed and include NIRCam/MIRI imaging and NIRSpec/NIRCam spectroscopic exposures. Here we discuss the MIRI imaging, which includes eight pointings, four of which provide deep imaging with the bluer bands (F560W and F770W) and four of which provide contiguous wavelength coverage in F1000W, F1280W, F1500W, and F1800W, where two of these also include coverage in F770W and F2100W. We present a summary of the data, data quality, and data reduction. The data reduction is based on the jwst calibration pipeline combined with custom modifications and additional steps designed to enhance the output quality, including improvements in astrometry and the removal of detector artifacts. We estimate the image depth of the reduced mosaics and show that these generally agree with expectations from the Exposure Time Calculator. We compare the MIRI F560W and F770W flux densities for bright sources to measurements from Spitzer/IRAC Ch3 (5.8 μm) and Ch4 (8.0 μm), and we find that they agree with systematic differences of <0.1 mag. For the redder MIRI bands, we assess their quality by studying the spectral energy distributions (SEDs) of Galactic stars. The SEDs are consistent with the expected Rayleigh–Jeans law with a deviation of ∼0.03 mag, indicating that the MIRI colors are reliable. We also discuss all publicly released data products (images and source catalogs), which are available on the CEERS website (https://ceers.github.io/).
The Force-freeness of the Solar Photosphere: Revisit with New Approach and Large Data Sets
Authors: Zhang Mei , Zhang Haocheng 
Published: October 2023

Abstract
Although it is generally believed that the solar photosphere is not magnetically force-free owing to its high plasma β, the estimations of force-freeness using observed magnetograms have produced disputable results. Some studies confirmed that the photosphere is largely not force-free whereas some authors argued that the photosphere is not far away from being force-free. In a previous paper of ours we demonstrated that, due to the fact that the noise levels of the transverse field in the magnetograms are much larger than those of the vertical field, wrong judgments on the force-freeness could be made: a truly force-free field could be judged as being not-force-free and a truly not-force-free field could be judged as being force-free. Here in this Letter, we propose an approach to overcome this serious problem. By reducing the spatial resolution to lower the noise level, the heavy influence of the measurement noise on the force-freeness judgment can be significantly suppressed. We first use two analytical solutions to show the success and effectiveness of this approach. Then, we apply this new approach to two large data sets of active region magnetograms, obtained with the Helioseismic and Magnetic Imager/Solar Dynamics Observatory and Spectro-Polarimeter (SP)/Hinode, respectively. Our analysis shows that the photospheric magnetic fields are actually far away from being force-free. Particularly, and most notably, the mean value of F

z
/F

p
(where F

z
is the net Lorentz force in the vertical direction and F

p
the total Lorentz force) is as low as −0.47, with more than 98% of the active regions having ∣F

z
/F

p
∣ > 0.1 when using the SP/Hinode magnetograms of true field strength.
Defining Millisecond Pulsars
Authors: Halder Priyam , Goswami Satyaki , Halder Protyusha , Ghosh Uday , Konar Sushan 
Published: October 2023

Abstract
Millisecond pulsars (MSP) are an important subclass of rotation powered pulsars (RPP), traditionally defined as those with P

s
< 20–30 ms and B

s
≲ 1010 G. We re-examine this definition by applying Gaussian mixture model analysis to identify distinct clusters within the RPP population and find that the MSPs appear to be better demarcated by the condition
P

s

≲ 16 ms.
Laevilacunaria (Mollusca, Gastropoda) in the Southern Ocean: A comprehensive occurrence dataset
Authors: Schmider-Martínez Andreas , Maturana Claudia , Poveda Yarleth , Rosenfeld Sebastián , López-Farrán Zambra , Saucède Thomas , Poulin Elie , González-Wevar Claudio 
Published: October 2023

The present dataset is a compilation of georeferenced occurrences of the littorinid genus Laevilacunaria Powell, 1951 (Mollusca, Gastropoda) in the Southern Ocean. Occurrence data were obtained from field expeditions (Antarctic and sub-Antarctic sampling) between 2015 and 2022, together with a review of published literature including records from 1887 to 2022. Three Laevilacunaria species have been recorded from the Southern Ocean: Laevilacunaria bennetti, L. antarctica and L. pumilio.
The present dataset includes 75 occurrences, representing the most exhaustive database of this Antarctic and sub-Antarctic littorinid genus. The publication of this data paper was funded by the Belgian Science Policy Office (BELSPO, contract n°FR/36/AN1/AntaBIS) in the Framework of EU-Lifewatch as a contribution to the SCAR Antarctic biodiversity portal (biodiversity.aq).
Actions collectives en ligne : un acte individuel pensé pour le bien commun ?
Authors: Amand Léa 
Published: October 2023

Les recherches sur l’action collective en ligne ont porté sur la possibilité d’une articulation entre objectifs partagés et initiatives individuelles. La nature peu astreignante voire peu consistante de celles-ci conduit parfois certain.es auteur.es à reléguer les questions de rationalité (au sens de M. Olson) et de « calcul » aux théories classiques de l’action collective. Cet article souhaite donc proposer une réflexion sur la manière dont, au sein d’actions collectives en ligne, un acte individuel peut tout à la fois s’avérer peu coûteux et malgré tout reposer sur une réflexion intentionnelle, non pas dans un état d’esprit strictement utilitariste mais orientée vers un but collectivement poursuivi. Deux modes opératoires, reposant sur des actions individuelles désireuses d’être utiles pour un projet commun, ont été extraits de notre analyse : le « porte-parole auto-désigné » et « l’astuce de l’effet cumulatif ».
À la recherche du citoyen « ordinaire », les publics imaginés de l’ouverture des données publiques au niveau municipal
Authors: Millerand Florence , Delias Lucie , Coutant Alexandre , Fortier Marie-Soleil 
Published: October 2023

À partir de l’étude du Portail des données ouvertes de la Ville de Montréal (Canada), cet article rend compte des publics de l’open data municipal à trois niveaux : les publics imaginés dans les discours, les publics configurés par le dispositif numérique, et les publics construits à travers les stratégies d’acteurs. Nous montrons comment la figure du citoyen « ordinaire » est travaillée discursivement et pratiquement, et comment les (non) usages du portail constituent des indices des attentes des publics effectifs qui, réinterprétés par les acteurs, contribuent à faire évoluer les publics et leurs représentations. Au-delà du constat de la non-équivalence entre les publics idéaux et les publics empiriques, l’étude encourage à prêter attention aux stratégies d’adaptation variées qui en résultent.
Les dénouements des situations révolutionnaires
Authors: Hassabo Chaymaa , Hmed Choukri 
Published: October 2023

La littérature en science politique consacrée aux révolutions et celle qui s’intéresse aux transitions politiques séparent le plus souvent l’analyse des situations révolutionnaires de celle de leurs dénouements. Fondé sur des enquêtes de terrain multisituées, en Égypte et en Tunisie, pendant les premières années qui ont suivi l’éclatement du « printemps arabe » (2010-2014), l’article remet en cause cette division du travail intellectuel et propose un nouveau programme de recherche. Celui-ci prend justement pour objet l’analyse des interactions entre les acteurs des mobilisations et ceux qui sont au cœur des transformations institutionnelles. Il montre d’une part que le transfert du pouvoir d’État, inhérent aux processus de changement de régime, est hautement dépendant de la nature et de la forme de ces interactions. Il redéfinit d’autre part le contenu des dénouements révolutionnaires, en analysant plus finement le rôle des élections ainsi que le processus constituant pendant la conjoncture critique.
Scoring Methods in Script Concordance Tests: An Exploratory Psychometric Study
Authors: Deschênes Marie-France , Maheu-Cadotte Marc-André , Fontaine Guillaume , Dionne Éric 
Published: October 2023

Background:
Despite the increasingly popular role of script concordance test (SCT) scoring methods in the evaluation of clinical reasoning, studies examining these methods in nursing are relatively scarce. This study explored the psychometric properties of five SCT scoring methods.

Method:
An SCT was administered to 12 experts and 43 learners. Scores were calculated using five methods and descriptive statistics. Differences in scores were assessed with the Mann-Whitney U test, and Spearman correlation coefficients were calculated for the different methods.

Results:

The median scores of both experts and learners differed substantially according to the scoring method used. Learners' scores were statistically different from experts' scores (
p
< .01) for each method. Spearman coefficients (range, 0.44 to 0.95) were positive for the different methods.

Conclusion:

Further research is needed to refine the influence of SCT scoring methods for use in certifying assessment of clinical reasoning in nursing.

[
J Nurs Educ
. 2023;62(10):549–555.]
The Effects of Low-Fidelity Simulation on Students' Perceived Abilities to Build Therapeutic Relationships
Authors: Bee Rachel Elizabeth , Watkins Julia , Barnes Ruth 
Published: October 2023

Background:
The combination of nursing student anxiety toward patients with mental health conditions, along with their unpreparedness for exercising active listening, empathy, and self-awareness in clinical situations, creates a barrier to achieving therapeutic nurse– patient relationships.

Method:
A quantitative quasiexperimental study with a one-group pretest-posttest design was used to determine whether a low-fidelity communication simulation laboratory would decrease nursing students' perceived anxiety levels toward mental health patients and increase students' perceived empathy, self-awareness, and active listening levels.

Results:

After completing the communication simulation laboratory, students' anxiety decreased significantly (
p
< .001) and active listening increased significantly (
p
< .001); empathy and self-awareness levels were relatively unchanged.

Conclusion:

Using a communication simulation laboratory effectively decreased nursing students' perceived anxiety levels toward patients and improved their perceived active listening skills. The findings of the study support the use of low-fidelity simulations to prepare students for psychiatric nursing clinical practice.

[
J Nurs Educ
. 2023;62(10):575–579.]