bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dissipative Instability of Magnetohydrodynamic Sausage Waves in a Compressional Cylindrical Plasma: Effect of Flow Shear and Viscosity Shear
Authors: Yu 유 D. J. 대중 
Published: September 2023

Abstract
The shear flow influences the stability of magnetohydrodynamic (MHD) waves. In the presence of a dissipation mechanism, flow shear may induce an MHD wave instability below the threshold of the Kelvin–Helmholtz instability, which is called dissipative instability. This phenomenon is also called negative energy wave instability because it is closely related to the backward wave, which has negative wave energy. Considering viscosity as a dissipation mechanism, we derive an analytical dispersion relation for the slow sausage modes in a straight cylinder with a discontinuous boundary. It is assumed that the steady flow is inside and dynamic and bulk viscosities are outside the circular flux tube under photospheric condition. When the two viscosities are weak, it is found that for the slow surface mode, the growth rate is proportional to the axial wavenumber and flow shear, consistent within the incompressible limit. For a slow body mode, the growth rate has a peak at a certain axial wavenumber, and its order of magnitude is similar to surface mode. The linear relationship between the growth rate and the dynamic viscosity established in the incompressible limit develops nonlinearly when the flow shear and/or the two viscosities are sufficiently strong.
Stream Fanning and Bifurcations: Observable Signatures of Resonances in Stellar Stream Morphology
Authors: Yavetz Tomer D. , Johnston Kathryn V. , Pearson Sarah , Price-Whelan Adrian M. , Hamilton Chris 
Published: September 2023

Abstract
Recent observations have revealed a trove of unexpected morphological features in many of the Milky Way’s stellar streams. Explanations for such features include time-dependent deformations of the Galactic gravitational potential, local disruptions induced by dark matter substructure, and special configurations of the streams’ progenitors. In this paper, we study how these morphologies can also arise in certain static, nonspherical gravitational potentials that host a subset of resonantly trapped orbit families. The transitions, or separatrices, between these orbit families mark abrupt discontinuities in the orbital structure of the potential. We develop a novel numerical approach for measuring the libration frequencies of resonant and near-resonant orbits and apply it to study the evolution of stellar streams on these orbits. We reveal two distinct morphological features that arise in streams on near-resonant orbits: fans, which come about due to a large spread in the libration frequencies near a separatrix, and bifurcations, which arise when a separatrix splits the orbital distribution of the stellar stream between two (or more) distinct orbit families. We demonstrate that these effects can arise in some Milky Way streams for certain choices of the dark matter halo potential and discuss how this might be used to probe and constrain the global shape of the Milky Way’s gravitational potential.
SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova
Authors: Jacobson-Galán W. V. , Dessart L. , Margutti R. , Chornock R. , Foley R. J. , Kilpatrick C. D. , Jones D. O. , Taggart K. , Angus C. R. , Bhattacharjee S. , Braff L. A. , Brethauer D. , Burgasser A. J. , Cao F. , Carlile C. M. , Chambers K. C. , Coulter D. A. , Dominguez-Ruiz E. , Dickinson C. B. , de Boer T. , Gagliano A. , Gall C. , Gao H. , Gates E. L. , Gomez S. , Guolo M. , Halford M. R. J. , Hjorth J. , Huber M. E. , Johnson M. N. , Karpoor P. R. , Laskar T. , LeBaron N , Li Z. , Lin Y. , Loch S. D. , Lynam P. D. , Magnier E. A. , Maloney P. , Matthews D. J. , McDonald M. , Miao H.-Y. , Milisavljevic D. , Pan Y.-C. , Pradyumna S. , Ransome C. L. , Rees J. M. , Rest A. , Rojas-Bravo C. , Sandford N. R. , Ascencio L. Sandoval , Sanjaripour S. , Savino A. , Sears H. , Sharei N. , Smartt S. J. , Softich E. R. , Theissen C. A. , Tinyanont S. , Tohfa H. , Villar V. A. , Wang Q. , Wainscoat R. J. , Westerling A. L. , Wiston E. , Wozniak M. A. , Yadavalli S. K. , Zenati Y. 
Published: September 2023

Abstract
We present UV and/or optical observations and models of SN 2023ixf, a type II supernova (SN) located in Messier 101 at 6.9 Mpc. Early time (flash) spectroscopy of SN 2023ixf, obtained primarily at Lick Observatory, reveals emission lines of H i, He i/ii, C iv, and N iii/iv/v with a narrow core and broad, symmetric wings arising from the photoionization of dense, close-in circumstellar material (CSM) located around the progenitor star prior to shock breakout. These electron-scattering broadened line profiles persist for ∼8 days with respect to first light, at which time Doppler broadened the features from the fastest SN ejecta form, suggesting a reduction in CSM density at r ≳ 1015 cm. The early time light curve of SN 2023ixf shows peak absolute magnitudes (e.g., M

u
= −18.6 mag, M

g
= −18.4 mag) that are ≳2 mag brighter than typical type II SNe, this photometric boost also being consistent with the shock power supplied from CSM interaction. Comparison of SN 2023ixf to a grid of light-curve and multiepoch spectral models from the non-LTE radiative transfer code CMFGEN and the radiation-hydrodynamics code HERACLES suggests dense, solar-metallicity CSM confined to r = (0.5–1) × 1015 cm, and a progenitor mass-loss rate of

M

̇

=

10

−
2

M

⊙

yr−1. For the assumed progenitor wind velocity of v

w
= 50 km s−1, this corresponds to enhanced mass loss (i.e., superwind phase) during the last ∼3–6 yr before explosion.
La possibilité d’un port. Impasses économiques et espoirs déçus dans la ville internationale de Tanger (1912-1956)
Authors: Perrier Antoine 
Published: September 2023

Placée sous mandat international, la ville de Tanger voit son développement économique dépendre exclusivement de la croissance de son port, idéalement placé sous les routes commerciales. Cet article examine les raisons d’un espoir déçu et de l’enlisement de tous les projets de développement portuaire qui se multiplient pourtant durant la période coloniale, depuis trois points de vue : les modes d’administration portuaire, les politiques économiques de la ville et les stratégies impériales des métropoles française et espagnole. L’étude de ce port perdant souligne les liens contradictoires entre mercantilisme colonial, jusqu’au xx e siècle, et le libéralisme commercial auquel la ville internationale était pourtant promise. Il illustre enfin le cas unique d’un port se construisant contre sa ville et les effets économiques négatifs du régime du mandat international.
La vérité du sexe dans les échographies prénatales : un accomplissement catégoriel, multimodal et socialisant
Authors: Greco Luca 
Published: September 2023

Dans cet article, nous allons examiner une pratique peu étudiée dans la littérature scientifique : l’annonce du sexe dans les échographies prénatales. En nous inspirant des travaux menés en anthropologie linguistique, nous allons proposer une vision des énoncés annonçant le sexe au prisme de leur performativité sans pour autant faire l’économie de la vérité. Nous considérerons l’annonce du sexe comme une pratique présentant des formats séquentiels spécifiques dans lesquels l’annonce proprement dite est systématiquement suivie ou précédée d’une séquence identifiant les modes d’identification visuelle du sexe. De ce fait, nous appréhenderons la vérité du sexe par sa visibilité et sa reconnaissabilité vis-à-vis des parents ainsi que comme l’un des traits constitutifs de la pratique médicale.
Le cercle de planification : des échanges oraux qui soutiennent la production d’idées à l’écrit
Authors: Tremblay Ophélie , Sénéchal Kathleen , Turgeon Élaine , Lamoureux-Duquette Mylène 
Published: September 2023

Les cercles d’auteurs constituent un dispositif collaboratif d’apprentissage de l’écriture s’inscrivant dans une approche intégrée du développement des compétences à écrire, à lire et à communiquer oralement des élèves. Dans cet article, les auteurs présentent les savoirs et les savoir-faire qu’une étude de type recherche-action sur la place de l’oral dans les cercles d’auteurs au primaire a permis de faire émerger, spécifiquement en lien avec les conduites orales mobilisées au sein du cercle de planification, soit la première étape du dispositif. L’analyse des activités élaborées et réalisées par les enseignantes participantes indique qu’elles ont choisi de traiter l’une ou l’autre des quatre conduites orales suivantes : porter attention, se poser des questions, gérer les tours de parole et rebondir sur les propos. Les résultats montrent que l’implication des enseignantes dans la recherche-action s’est révélée fructueuse pour faciliter leur appropriation du dispositif et permettre le traitement des conduites orales ciblées.
Géographie du politique : discours, mouvances, subsidiarité
Authors: Retaillé Denis 
Published: September 2023

Pour présenter ce numéro de L’Information géographique consacré à la géographie du politique inscrite au concours, cette brève mise au point tente de se placer dans un débat qui a vécu mais qui peut encore agiter quelques vieilles querelles. Cela pour en libérer les nouvelles générations de géographes. Sans remonter jusqu’à leurs sources, les moments de bifurcation sont soulignés pour aboutir aux enjeux d’aujourd’hui comme ils apparaissent et se rejoignent dans un couple provisoire : subsidiarité et argumentation. Argumentation parce que les textes réunis en montrent la portée en controverses qui se jouent autour de ce qui est considéré comme juste idéologiquement donc légitime politiquement, pointant les niveaux de la justesse là où elle s’argumente en subsidiarité. Contre toute attente, l’échelle de pertinence est malmenée quand principes (globaux) et actions (locales) se télescopent.
Sève et Vygotski, une fructueuse rencontre
Authors: Brossard Michel 
Published: September 2023

L’auteur s’intéresse à une période de l’itinéraire intellectuel de Lucien Sève : celle où il prit connaissance de l’œuvre du psychologue russe L. S. Vygotski (1896-1934). Ils eurent à deux époques différentes pour projet commun d’édifier une science de l’individu sur le sol du matérialisme historique. Le concept de personnalité leur est commun, mais ils divergent quant aux orientations de recherches : étude du développement du système psychique pour Vygotski ; étude de l’individu dans son devenir biographique pour Lucien Sève.
Arm Health in Elite Collegiate Summer League Baseball Players Assessed by the Kerlan-Jobe Orthopaedic Clinic Score
Authors: Painter David F. , Quinn Matthew , Dove James H. , Testa Edward J. , Snow Ryan , Byrne Rory A. , Pavlu Michele Marie , Jordan Rachel , Owens Brett D. 
Published: September 2023

Context
Collegiate baseball players with professional aspirations often participate in summer leagues; foremost among them is the Cape Cod Baseball League (CCBL). Injuries acquired during the collegiate baseball season can be carried into the CCBL season and vice versa.

Objective
To assess the history of throwing arm injury and current functionality in midseason CCBL players.

Design
Cross-sectional study.

Setting
Online questionnaire.

Patients or Other Participants
A total of 123 CCBL players participated. Qualifying athletes were ≥18 years old and were rostered CCBL players with remaining collegiate eligibility.

Main Outcome Measure(s)
After collecting background information, we used the Kerlan-Jobe Orthopaedic Clinic (KJOC) Shoulder and Elbow questionnaire to assess the history of throwing arm injury and current functionality. The maximum KJOC score is 100.0; higher scores correspond with greater functionality.

Results
The mean KJOC score was 86.6 ± 14.5 (n = 92); 24.5% (23/94) of players reported a prior diagnosis of throwing arm injury other than a strain or sprain. A total of 49 (49/96, 51.0%) players had undergone rehabilitation for a throwing arm injury, and 7 (7/96, 7.3%) had experienced a medical procedure. Players with no previous treatment (n = 41, mean KJOC score = 88.9 ± 19.0) more frequently demonstrated KJOC scores of ≥90 than players with such treatment (n = 55, 80.9 ± 17.1; P &lt; .001). The 18 players with time-loss arm injury in the last year had lower mean KJOC scores (71.3 ± 20.0) than players with no injury or time loss (90.3 ± 9.8; P &lt; .001). Similarly, players who reported current arm trouble (n = 15) had lower KJOC scores (71.6 ± 17.5) than players with healthy arms (89.5 ± 11.9; P &lt; .001).

Conclusions
The average KJOC score of the CCBL players was &lt;90, with particularly low scores in athletes with prior arm injury and treatment.
Hermeneutic Phenomenological Approach to the Experiences of the Individuals Living with Schizophrenia: A Qualitative Study
Authors: Kanniappan Vadivelan , Abishek J R 
Published: September 2023

Abstract

Background:
Schizophrenia affects various spheres of life causing so many difficulties and burden, but the studies focusing on the experience of individuals living with schizophrenia with reference to the Tamil Nadu context are sparse.

Material and Methods:
A qualitative interview based on a hermeneutic phenomenological approach was conducted with 10 individuals living with Schizophrenia and was recorded. The responses were transcribed and coded. Based on codes, domains and subdomains were identified.

Results:
Six themes were identified, under which the participant’s burden was described. Participants expressed a deep longing for love and care. They were deprived of family’s affection. Participants felt economically insecured, which was owing to their unemployment. Participants had many physical complaints including sleep disturbance and fatigue. Participants expressed that they had failing memory, concentration issues, and difficulty in planning. Most of the participants felt isolated by family and kin. They did not participate in much social activities due to the fear of judgment and stigmatization.

Conclusion:
The experience of individuals living with Schizophrenia revealed that they experienced a series of burdens owing to their illness and its impacts that were categorized into various themes including physical, vocational, cognitive, psychological, personal, and social factors.
Maternal Healthcare Services in a Rural Area of Haryana during the COVID-19 Pandemic: A Community-Based Study
Authors: Singh Tejbeer , Kaur Ravneet , Kant Shashi , Mani Kalaivani , Yadav Kapil , Gupta Sanjeev Kumar 
Published: September 2023

Abstract

Background:
It is well documented that the utilization of maternal healthcare services during pregnancy and childbirth plays a significant role in reducing maternal morbidity and mortality. Disruptions in maternal healthcare services during the coronavirus disease 2019 (COVID-19) pandemic have been reported. However, there is a paucity of literature from rural areas, as most of the previous studies are either record-based or conducted in tertiary care centers. This study aimed to determine the proportion of women who received the recommended maternal healthcare services during the COVID-19 pandemic and to study various factors associated with the utilization of services.

Material and Methods:
In this community-based study, we assessed the utilization of maternal healthcare services among 520 women residing in the Ballabgarh Block of District Faridabad, Haryana, whose antenatal, intrapartum, and postnatal period coincided with the first wave of COVID-19 pandemic. Domiciliary visits were made, and women were interviewed retrospectively regarding maternal healthcare services utilized by them. The antenatal care (ANC) cards were reviewed, and details were corroborated.

Results:
Full ANC was received by 15.3% of women, and 45% of women had less than four antenatal visits. 30.9% of participants had cesarean delivery. The proportion of cesarean delivery in private facilities was significantly higher than in government facilities [Odds Ratio (OR) (95% Confidence intervals (CI)) =10.04 (5.87–17.19); P < 0.001]. In multivariate logistic regression, gravidity was negatively associated with full ANC [OR (95% CI) =0.43 (0.25–0.74); P = 0.002].

Conclusion:
Fewer women received the recommended maternal healthcare services during the COVID-19 pandemic. Detailed assessment of health systems and factors affecting routine healthcare services, during the pandemic, can help improve the readiness and response in the future.
The Pattern of Health-Seeking Behavior among Juang Tribe- A Particularly Vulnerable Tribal Group of Odisha, India
Authors: Sahoo Kaberi , Nayak Soumya R. , Khurana Priyanka 
Published: September 2023

Abstract

Introduction:
Social and economic position, environment, access to healthcare, ethos, and worldview are all important determinants of people’s health-seeking behavior. Tribal communities in India oscillate between their emic rationale for the cause and treatment of health concerns on the one hand and affordable modern methods on the other. The present article is based on a study conducted among the Junag tribe of Odisha to understand their acceptance and preference for traditional or modern healthcare systems and the reasons for these choices.

Material and Methods:
Purposive sampling, a pre-structured schedule, an observation approach, case studies, and interviews with community members have been used to gather the primary data used in the study.

Result:
The study identified a diverse pattern of health-seeking behavior. From the four villages, 70% of respondents combined into cluster-1 preferred the traditional healthcare system, mostly for geographical and cultural reasons, as opposed to 95% of respondents from the villages in cluster-2, who preferred modern healthcare services because they were more easily accessible and involved modern healthcare providers.

Conclusion:
In this research work, it has been found that the Juang tribe is in a transitional phase and uses a hybrid approach to health seeking. Moreover, it has also been discovered that important variables including cultural attitudes and the affordability of contemporary healthcare services have influenced people’s decisions toward healthcare systems.
Coverage and Determinants of Birth Dosage of Newborn Immunization in Rural Areas of Dehradun District, Uttarakhand, India: A Community-Based Cross-Sectional Study
Authors: Kumar Prakash , Kumar Abhishek , Saini Bhavana , Singh Mahendra , Saxena Vartika 
Published: September 2023

Abstract

Backgrounds:
The Universal Immunization Program of India is one of the most cost-effective interventions in public health. Missing or delaying vaccination may elicit an uncertain immune response in the body, making the population susceptible to vaccine-preventable diseases. The objectives of this study were to determine the coverage of newborn immunization for birth doses under the National Immunization Schedule and its epidemiological determinants in the rural areas of the Dehradun district, Uttarakhand.

Materials and Methods:
A community-based cross-sectional study was conducted for a period of one year with a sample size of 570. World Health Organization (WHO) 30 Cluster sampling technique was used with 19 children in each cluster. The data on determinants were collected using a semi-structured, pre-designed schedule through a house-to-house survey. Multivariate analysis was conducted to identify factors associated with immunization coverage, taking the significance level as P < 0.05.

Results:
The coverage of the Bacillus Calmette–Guérin vaccine, oral polio vaccine zero dose and hepatitis B birth dose were 100%, 91.9%, and 58.8%, respectively in the study area with an overall prevalence of incomplete coverage of newborn immunization as 42.5%. The most cited reason for children being unimmunized with birth doses was the unavailability of vaccines at the birthplace center (29.6%).

Conclusions:
The prevalence of incomplete coverage of newborn immunization was quite high, which was undermining the holistic approach of the National Immunization Program. Vaccine availability and accessibility at the birthplace with capacity building and training of the healthcare workers may be considered to ensure coverage of birth doses.
The Analysis of Harmful Factors Affecting on Mental Health and Cognitive Function among Workers of Steel Industry (Using the ISO9612 Approach)
Authors: alimoradi Hadi , Nazari Mahsa , Nodoushan Reza Jafari , ajdani Alireza 
Published: September 2023

Background:
In most industrial environments, workers are exposed to noise on a daily basis. The present study dealt with a set of cognitive factors to evaluate the negative emotional states in depression, anxiety, and stress in a noisy work environment.

Methods:
The research was a case-study that examined in 1000 male workers of steel industry. The sampling method was random sampling. The workers filled out questionnaire about, Depression, Anxiety, Stress, Scale, Cognitive Processing Inventory, and personality type tests in the study, and the ISO 9612:2009 standards was used to obtain external noise. Data were collected and analyzed using SPSS version 22 and exact test with 0.05 significant levels.

Results:
According to the results, age showed a significant effect on depression, marital status on anxiety, and the shift on employee stress (P < 0.05).

Conclusion:
Finally, one can conclude that given the positive and significant relationship between noise pressure level and cognitive and subjective components in the case group, it is necessary to take effective preventive measures to prevent psychological damage and to maintain workers' health in the industry.