bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Corporate Governance of South African State-Owned Enterprises (SOEs): Leadership and Compliance Issues
Authors: PETERSEN Robin , DUBIHLELA Jobo , CHAKABVA Oscar 
Published: June 2024

The financial, operational, and business issues facing SOEs have reduced the trust that investors and citizens have in the state's capacity to effectively promote national economic growth. Most countries, especially developing ones like South Africa, have been plagued by the issue of inadequate public service delivery. One key contributing factor to this problem has been identified as the poor governance practices of SOEs. The magnitude of these massive SOE business failures, which surpassed the failure of numerous other enterprises around the world, drew attention to the urgent need for new corporate governance studies. To contribute to this, the study explores the corporate governance of South African SOEs, with a focus on leadership and compliance. To achieve this, an online questionnaire was used to gather quantitative data from a sample of 288 internal audit professionals. The data collected was then analyzed using SPSS software, and descriptive statistics were employed to present the findings. The study found that corporate governance malpractices are common in SOEs, which include hiring managers and executives who lack the necessary qualifications and experience, high tender irregularities, and understaffing critical duties. This study is unique in that it employs stakeholder theory in an innovative approach to explain the findings, notably on the leadership issue. Besides, it contains critical recommendations for SOE leadership and policymakers on how to improve the corporate governance of SOEs to help them achieve their strategic goals, while also suggesting future study directions.
Host-star Properties of Hot, Warm, and Cold Jupiters in the Solar Neighborhood from Gaia Data Release 3: Clues to Formation Pathways
Authors: Banerjee Bihan , Narang Mayank , Manoj P. , Henning Thomas , Tyagi Himanshu , Surya Arun , Nayak Prasanta K. , Tripathi Mihir 
Published: June 2024

Abstract
Giant planets exhibit diverse orbital properties, hinting at their distinct formation and dynamic histories. In this paper, using Gaia Data Release 3 (DR3), we investigate if and how the orbital properties of Jupiters are linked to their host star properties, particularly their metallicity and age. We obtain metallicities for main-sequence stars of spectral type F, G, and K, hosting hot, warm, and cold Jupiters with varying eccentricities. We compute the velocity dispersions of the host stars of these three groups using kinematic information from Gaia DR3 and obtain average ages using a velocity dispersion–age relation. We find that the host stars of hot Jupiters are relatively metal rich ([Fe/H] = 0.18 ± 0.13) and young (median age of 3.97 ± 0.51 Gyr) compared to the host stars of cold Jupiters in nearly circular orbits, which are relatively metal poor (0.03 ± 0.18) and older (median age of 6.07 ± 0.79 Gyr). The host stars of cold Jupiters in high-eccentricity orbits, on the other hand, show metallicities similar to those of the hosts of hot Jupiters, but are older, on average (median age of 6.25 ± 0.92 Gyr). The similarity in metallicity between the hosts of hot Jupiters and the hosts of cold Jupiters in high-eccentricity orbits supports high-eccentricity migration as the potential origin of hot Jupiters, with the latter serving as the progenitors of hot Jupiters. However, the average age difference between them suggests that the older hot Jupiters may have been engulfed by their host star over timescales ∼ 6 Gyr. This allows us to estimate the value of stellar tidal quality factor,

Q
*
′

∼

10

6
±
1

.
Chemical Diversity on Small Scales: Abundance Analysis of the Tucana V Ultrafaint Dwarf Galaxy
Authors: Hansen Terese T. , Simon Joshua D. , Li Ting S. , Sharkey Domani , Ji Alexander P. , Thompson Ian B. , Reggiani Henrique M. , Galarza Jhon Yana 
Published: June 2024

Abstract
The growing number of Milky Way satellites detected in recent years has introduced a new focus for stellar abundance analysis. Abundances of stars in satellites have been used to probe the nature of these systems and their chemical evolution. However, for most satellites, only centrally located stars have been examined. This paper presents an analysis of three stars in the Tucana V system, one in the inner region and two at ∼10′ (7–10 half-light radii) from the center. We find a remarkable chemical diversity between the stars. One star exhibits enhancements in rapid neutron-capture elements (an r-I star), and another is highly enhanced in C, N, and O but with low neutron-capture abundances (a CEMP-no star). The metallicities of the stars analyzed span more than 1 dex from [Fe/H] = −3.55 to −2.46. This, combined with a large abundance range of other elements like Ca, Sc, and Ni, confirms that Tuc V is an ultrafaint dwarf (UFD) galaxy. The variation in abundances, highlighted by [Mg/Ca] ratios ranging from +0.89 to −0.75, among the stars demonstrates that the chemical enrichment history of Tuc V was very inhomogeneous. Tuc V is only the second UFD galaxy in which stars located at large distances from the galactic center have been analyzed, along with Tucana II. The chemical diversity seen in these two galaxies, driven by the composition of the noncentral member stars, suggests that distant member stars are important to include when classifying faint satellites and that these systems may have experienced more complex chemical enrichment histories than previously anticipated.
On the Roles of Stellar Rotation and Binarity in NGC 2423's Main-sequence Turnoff Region
Authors: Bu 卜 Yutian 玉田 , He 贺 Chenyu 辰昱 , Wang 王 Li 莉 , Lin 林 Jiamao 佳茂 , Li 李 Chengyuan 程远 
Published: June 2024

Abstract
Research has shown that many young and intermediate-age clusters (younger than ∼2 Gyr) have extended main sequences and extended main-sequence turnoffs (eMSTOs), which cannot be adequately described by a single isochrone. The reason for the extended main sequences is now known, with the most probable cause being the fast rotation of stars. However, a significant fraction of slowly rotating stars form a younger stellar population than their fast-rotating counterparts, leading to speculation that they have undergone rotational mixing processes internally. One speculation is that a considerable number of slowly rotating stars reside in close binary systems, where tidal forces from companion stars are the cause of their rotational deceleration. In this work, we report a relatively old open star cluster in the Milky Way, NGC 2423 (∼1 Gyr old), which exhibits an apparent eMSTO. As anticipated, many characteristics of NGC 2423 indicate that its eMSTO is driven by stellar rotations. Our calculations indicate that if slowly rotating stars commonly have a close companion star, they should exhibit significant differences in radial velocities observationally, and binary systems that can be tidally locked within the age of NGC 2423 should have a mass ratio close to 1. However, none of these predictions align with our observations. Interestingly, among the only two equal-mass binary systems in the observed region for which spectroscopic data could be obtained, we discovered that one of them is a tidally locked binary system. This further suggests the validity of our numerical simulation results.
JWST and ALMA Discern the Assembly of Structural and Obscured Components in a High-redshift Starburst Galaxy
Authors: Liu Zhaoxuan , Silverman John D. , Daddi Emanuele , Puglisi Annagrazia , Renzini Alvio , Kalita Boris S. , Kartaltepe Jeyhan S. , Kashino Daichi , Rodighiero Giulia , Rujopakarn Wiphu , Suzuki Tomoko L. , Tanaka Takumi S. , Valentino Francesco , Andika Irham Taufik , Casey Caitlin M. , Faisst Andreas , Franco Maximilien , Gozaliasl Ghassem , Gillman Steven , Hayward Christopher C. , Koekemoer Anton M. , Kokorev Vasily , Lambrides Erini , Lee Minju M. , Magdis Georgios E. , Harish Santosh , McCracken Henry Joy , Rhodes Jason , Shuntov Marko , Ding Xuheng 
Published: June 2024

Abstract
We present observations and analysis of the starburst PACS-819 at z = 1.45 (M
* = 1010.7
M
⊙), using high-resolution (0.″1; 0.8 kpc) Atacama Large Millimeter/submillimeter Array (ALMA) and multiwavelength JWST images from the COSMOS-Web program. Dissimilar to Hubble Space Telescope (HST) ACS images in the rest-frame UV, the redder NIRCam and MIRI images reveal a smooth central mass concentration and spiral-like features, atypical for such an intense starburst. Through dynamical modeling of the CO (J = 5–4) emission with ALMA, PACS-819 is rotation dominated and thus consistent with having a disk-like nature. However, kinematic anomalies in CO and asymmetric features in the bluer JWST bands (e.g., F150W) support a more disturbed nature likely due to interactions. The JWST imaging further enables us to map the distribution of stellar mass and dust attenuation, thus clarifying the relationships between different structural components not discernible in the previous HST images. The CO (J = 5–4) and far-infrared dust continuum emission are cospatial with a heavily obscured starbursting core (<1 kpc) that is partially surrounded by much less obscured star-forming structures including a prominent arc, possibly a tidally distorted dwarf galaxy, and a massive clump (detected in CO), likely a recently accreted low-mass satellite. With spatially resolved maps, we find a high molecular gas fraction in the central area reaching ∼3 (M
gas/M
*) and short depletion times (M
gas/SFR ∼ 120 Myr, where SFR is star formation rate) across the entire system. These observations provide insights into the complex nature of starbursts in the distant Universe and underscore the wealth of complementary information from high-resolution observations with both ALMA and JWST.
A Hubble Space Telescope Search for r-Process Nucleosynthesis in Gamma-Ray Burst Supernovae
Authors: Rastinejad J. C. , Fong W. , Levan A. J. , Tanvir N. R. , Kilpatrick C. D. , Fruchter A. S. , Anand S. , Bhirombhakdi K. , Covino S. , Fynbo J. P. U. , Halevi G. , Hartmann D. H. , Heintz K. E. , Izzo L. , Jakobsson P. , Kangas T. , Lamb G. P. , Malesani D. B. , Melandri A. , Metzger B. D. , Milvang-Jensen B. , Pian E. , Pugliese G. , Rossi A. , Siegel D. M. , Singh P. , Stratta G. 
Published: June 2024

Abstract
The existence of a secondary (in addition to compact object mergers) source of heavy element (r-process) nucleosynthesis, the core-collapse of rapidly rotating and highly magnetized massive stars, has been suggested by both simulations and indirect observational evidence. Here, we probe a predicted signature of r-process enrichment, a late-time (≳40 days post-burst) distinct red color, in observations of gamma-ray burst supernovae (GRB-SNe), which are linked to these massive star progenitors. We present optical to near-IR color measurements of four GRB-SNe at z ≲ 0.4, extending out to >500 days post-burst, obtained with the Hubble Space Telescope and large-aperture ground-based telescopes. Comparison of our observations to models indicates that GRBs 030329, 100316D, and 130427A are consistent with both no enrichment and producing 0.01–0.15 M
⊙ of r-process material if there is a low amount of mixing between the inner r-process ejecta and outer supernova (SN) layers. GRB 190829A is not consistent with any models with r-process enrichment ≥0.01 M
⊙. Taken together the sample of GRB-SNe indicates color diversity at late times. Our derived yields from GRB-SNe may be underestimated due to r-process material hidden in the SN ejecta (potentially due to low mixing fractions) or the limits of current models in measuring r-process mass. We conclude with recommendations for future search strategies to observe and probe the full distribution of r-process produced by GRB-SNe.
A Quantification of the Effects Using Different Stellar-population Synthesis Models for Epoch of Reionization
Authors: Liu Peiai , Ma Qingbo , Han Yunkun , Luo Rongxin 
Published: June 2024

Abstract
The luminosity and spectral energy distribution of high-z galaxies are sensitive to the stellar-population synthesis (SPS) models. In this paper, we study the effects of different SPS models on the measurements of high-z galaxies and the budget of ionizing photons during the epoch of reionization by employing each of them in the semianalytical galaxy formation model L-Galaxies 2020. We find that the different SPS models lead to ≲0.5 dex differences on the amplitudes of UV luminosity functions, while two modes of the same SPS model with and without the inclusion of binary stars lead to similar UV luminosity functions at z ≥ 6. Instead, the binary stars produce ∼40% more ionizing photons than the single stars, while such differences are smaller than those caused by different SPS models; for example, the BPASS model produces ∼100% more ionizing photons than other models.
ASKAP-EMU Radio Emission from Type Ic Supernova SN1996aq in NGC 5584
Authors: Zakir Hina , Filipović Miroslav D. , Barnes Luke , Koribalski Bärbel S. , Hopkins Andrew M. , Lazarević Sanja , Leahy Denis , Gordon Yjan 
Published: June 2024

Abstract
We report the Australian Square Kilometre Array Pathfinder Evolutionary Map of the Universe survey detection of radio continuum emission from SN1996aq, a Type Ic supernova within the nearby face-on spiral galaxy NGC 5584. Analysis at multiple radio frequencies reveals radio emission coincident with SN1996aq. We find a flatter radio spectral index compared to the 2009 observations, indicating rapid evolution of SN1996aq. Conversely, no radio emission is observed from NGC 5584’s other known supernova, SN2007af. Furthermore, we identified two other significant radio continuum regions with properties consistent with H ii regions.
Progenitor Stars Calculated with Small Reaction Networks should not be Used as Initial Conditions for Core Collapse
Authors: Renzo M. , Goldberg J. A. , Grichener A. , Gottlieb O. , Cantiello M. 
Published: June 2024

Abstract
Core collapse initial conditions are a bottleneck in understanding the explosion mechanism(s) of massive stars. Stellar evolution codes struggle after carbon burning, and either stop or adopt numerical simplifications missing crucial physics. The use of small nuclear reaction networks (NRN) that account for energy production but bypass weak reactions is typical, but insufficient to study the dynamics of the collapse. We advise against the use of progenitors computed with small NRN in expensive multidimensional simulations of core collapse, bounce, (jet formation), and explosion.
Une régulation clinique en psychiatrie pour adolescents. Une expérience en hôpital de jour
Authors: Granet Fanette , Scarone Eduardo 
Published: June 2024

Deux psychologues font part d’un dispositif de réunion original au sein d’un hôpital de jour pour adolescents. Il s’agit d’une réunion dite de « régulation » bihebdomadaire, dont le cadre permet à chaque soignant d’aborder des difficultés ou des trouvailles dans le soin des patients. Les auteurs proposent à travers cet exemple de montrer comment peut se travailler le cadre thérapeutique ainsi que l’intérêt d’un ajustement des soins au plus près de la clinique quotidienne des patients.
Le rêve, entre actuel et origines
Authors: Dupeu Jean-Marc 
Published: June 2024

L’auteur met au premier plan une problématique qui chez Freud reste assez secondaire, à savoir le problème central de la fonction du rêver, du processus du rêver. On pourrait dire que le privilège accordé à l’interprétation des récits de souvenirs de rêves , comme produits, voire sous-produits du processus onirique ( traümen ), a fait obstacle à ce que soit posée de façon convaincante par Freud lui-même la question de la fonction psychique (et pas seulement « autoconservatrice ») du processus du rêver. Dans le chapitre VI, le travail de rêve apparaît comme un pur et simple “cryptage” des pensées du rêve. À ce titre, l’interprétation des rêves serait un simple décryptage. Contrairement à ce qu’on lit le plus souvent, le chapitre de la Traumdeutung le plus problématique n’est pas le chapitre VII, qui tente – non sans profit – de renouer avec la métapsychologie de l’ Esquisse , mais bien ce chapitre VI, obstacle épistémologique majeur que Freud n’arrivera jamais tout à fait à surmonter… malgré sa « révision » avortée dans l’ Au-delà du principe de plaisir . Le texte où il s’approche le plus d'une telle « révision » est le Complément métapsychologique à la doctrine du rêve (1915), dans lequel il prend au sérieux la question de la régression dans le rêve et en psychopathologie. La visée de la thérapeutique analytique (quels que soient les dispositifs privilégiés – différents selon les organisations psychopathologiques) consisterait, dans cette perspective, à relancer la fonction introjective (et donc le processus de subjectivation) du processus du rêver, lorsque celui-ci s’est trouvé défaillant ou a été débordé. Du coup, les analogies entre le paradigme du rêver et le dispositif analytique trouvent des justifications théoriques et pratiques.
Les « films perdus » de la catastrophe de Courrières : des survivants au cœur d’un succès cinématographique
Authors: Delangue Guillaume 
Published: June 2024

Les « films perdus » de la catastrophe de Courrières : des survivants au cœur d’un succès cinématographique. La catastrophe de Courrières est l’une des plus grandes tragédies minières de tous les temps. En mars 1906, un effondrement de galeries provoque la mort de 1 099 mineurs. L’évènement, très médiatisé par la presse, suscite un émoi national. Des « films perdus », absents des archives cinématographiques et méconnus des historiens, ont été tournés par les cinéastes au moment des faits. Ils montrent notamment les funérailles des victimes, l’intervention des sauveteurs dans les mines, et les survivants à l’infirmerie. Ces derniers collaborent étroitement à la réalisation et à la promotion commerciale de ces films, en acceptant d’être enregistrés sur leur lit d’hôpital, avec leurs proches, ou en participant à une tournée médiatique dans la capitale. Les vues de la catastrophe sont distribuées en masse dans l’Europe francophone de mars à juin 1906, grâce notamment à un important réseau de projectionnistes ambulants.
La recherche publique est-elle de plus en plus appliquée ?
Authors: Barrier Julien 
Published: June 2024

En s’inscrivant dans les débats sur les reconfigurations contemporaines de la science, cet article examine la thèse selon laquelle la recherche publique serait de plus en plus largement orientée par des intérêts économiques. À partir de l’analyse lexicale d’un corpus de près de 4 000 abstracts de publications scientifiques et d’une enquête de terrain sur la recherche en électronique, photonique et nanotechnologies, il met en évidence un déplacement des enjeux scientifiques au sein de ce domaine, enjeux qui se structurent de plus en plus souvent autour de problématiques technologiques et industrielles. Toutefois, l’analyse montre que, loin d’être passifs face à des changements impulsés de l’extérieur, les chercheurs ont activement participé à ces évolutions. En effet, on a assisté à une redéfinition des modalités de la concurrence entre pairs dans ce domaine, où la capacité à démontrer le potentiel applicatif d’une recherche est devenue un facteur supplémentaire de crédibilité scientifique.
Comparing the effectiveness of oral montelukast versus cetirizine in the management of allergic rhino-conjunctivitis and its effect on quality of life among children: A randomized, double-blind clinical trial
Authors: Jayawardana Pushpika , Ponnamperuma Thyagi 
Published: June 2024

Background: Allergic rhino-conjunctivitis (AR) is a common disorder in children, which causes significant morbidity and impact on learning and day-to-day activities. Objectives: To compare effectiveness of montelukast versus cetirizine in AR and its effect on the quality of life (QoL) among children aged 6-12 years, attending Asthma Clinic, Faculty of Medicine, University of Ruhuna, Sri Lanka. Method: This was a randomized, double-blind, parallel-group trial; 'Group A' was given montelukast with a cetirizine dummy; 'Group B' was given cetirizine with a montelukast dummy. Primary endpoint was to compare improvement of nasal, eye and night symptom scores. Secondary endpoint was to compare the QoL between the groups. Total symptoms were assessed at baseline, one month, two months and three months. Results: There were 176 children (62.5% boys) with a mean age of 8.82 ± 1.79 years. Fifteen children were lost to follow-up, 7 from the montelukast and 8 from the cetirizine group. There was a significant reduction in all symptoms (p<0.05) every month in both treatment groups. Whilst montelukast group had more improved day and night symptom scores than cetirizine group, statistically significant improvement was seen only in the 3rd month (t-4.10 p <0.001). Mean QoL score showed no significant difference between the two groups at onset (montelukast 9.01±9.4 and cetirizine 15.9 ± 10.4; t-0.369; p=0.712). Both groups showed a statistically significant improvement in all domains of QoL by completion of treatment (p<0.05). Upon completion, the montelukast group showed a significantly better QoL than the cetirizine group. Conclusions: Both cetirizine and montelukast showed remarkable improvement in the symptoms and better QoL in children. Study outcomes in all clinical domains and QoL were more significantly improved in montelukast group than in cetirizine group when treatment was continued for 3 months.
Recurrent Sclerosing Polycystic Adenosis of the Parotid Gland: An Entity with Distinct Histomorphology on Biopsy
Authors: Thambiraj Paruvathavarthini , Venkatakrishnan Swetha , Gochhait Debasis , Rekha Jinkala Sree 
Published: June 2024

Abstract
Pathological examination plays a significant role in diagnosing and distinguishing benign and malignant tumors of the salivary gland. One such lesion which mimics malignancy clinically is sclerosing polycystic adenosis (SPA). This is a rare benign reactive lesion of the salivary glands included in the WHO 2017 classification in the “non-neoplastic epithelial lesion” category. Here, we describe a young female with SPA of the parotid gland showing classic histomorphological features. We clinically suspected a malignancy as it was recurrent with an expansile growth pattern. Awareness of this nonneoplastic rare entity is crucial to avoid misdiagnosis as it mimics malignancy.
LIVED EXPERIENCES OF CRIMINOLOGY STUDENT INTERNS DURING ON-THE-JOB TRAINING: A PHENOMENOLOGY OF SACRIFICE AMIDST COVID-19 PANDEMIC
Authors: Solis July Jean L. , Besas Marnie J. , Rodriguez Geraldine D. 
Published: June 2024

The purpose of this qualitative phenomenological study was to unfold the lived experiences of Criminology student-interns of Ramon Magsaysay Memorial Colleges General Santos City. Table one reflects the emergent themes on the experiences of the Criminology student-interns amidst the COVID-19 pandemic, namely: gaining new lessons, being able to extend help, challenging, exciting, limited learning, expectation gone wrong, and developing community involvement. Moreover, four essential themes emerged for the first part, which are about the challenges; these were financial, dealing with people, health issues due to exhaustion, and inability to manage time. On the other hand, five emergent themes emerged for the second part, which is about coping mechanisms: prayer, being optimistic, strategic, self-motivation, and balance time. Lastly, the insights of the Criminology student-interns covered nine emergent themes, these were: create a schedule, cherish every moment, set priorities, invest time for physical activity, be flexible, be ready always, productivity matters, follow instructions, persevere.<p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/soc/0747/a.php" alt="Hit counter" /></p>