bluuebunny/crossref_metadata_2025 huggingface dataset:
Kemampuan Literasi Matematika Siswa Kelas VIII Ditinjau dari Gaya Kognitif
Authors: Nadiyatush Sholihah  , Sri Subarinah  , Nilza Humaira Salsabila  , Arjudin Arjudin
Published: October 2024

Kemampuan literasi matematika memiliki peran penting dalam kehidupan modern, dimana setiap individu diharapkan dapat memanfaatkan pengetahuan matematika untuk menyelesaikan masalah sehari-hari. Namun, survei PISA 2022 mengungkapkan bahwa literasi matematika siswa Indonesia masih rendah. Penelitian ini bertujuan untuk mendeskripsikan kemampuan literasi matematika dengan gaya kognitif fast-accurate, reflektif, impulsif, dan slow-inaccurate. Jenis penelitian ini merupakan deskriptif kualitatif. Subjek penelitian adalah siswa kelas VIIIA MTs NW Aik Ampat Lombok Timur tahun ajaran 2024/2025 yang berjumlah 22 siswa, dengan 2 siswa bergaya kognitif fast-accurate, 6 siswa bergaya kognitif reflektif, 11 siswa bergaya kogntif impulsif, dan 3 siswa bergaya kognitif slow-inaccurate. Teknik pemilihan subjek dilakukan dengan teknik purposive sampling. Instrumen penelitian berupa tes MFFT (Maching Familiar Figures Test), tes kemampuan literasi matematika, dan pedoman wawancara. Teknik analisis data yang digunakan terdiri dari tiga tahap, yaitu: 1) reduksi data, 2) penyajian data, dan 3) verifikasi. Analisis dilakukan berdasarkan tiga indikator kemampuan literasi matematika, yaitu 1) merumuskan situasi ke dalam bentuk matematika; 2) menerapkan konsep, penalaran, dan prosedur matematika; serta 3) menafsirkan solusi matematika. Hasil penelitian menunjukkan bahwa siswa dengan gaya kognitif fast-accurate dan reflektif melakukan ketiga indikator kemampuan literasi matematika walau siswa fast-accurate kurang lengkap dalam menuliskan informasi yang diketahui dan ditanyakan pada soal. Siswa dengan gaya kognitif impulsif dan slow-inaccurate melakukan ketiga indikator kemampuan literasi matematika namun belum maksimal dalam menggunakan prosedur matematika, cenderung kurang teliti saat proses perhitungan.
Revitalization of Tourism Village Facilities as an Effort to Increase Income and Sustainability
Authors: Andika Andika , Amara Raihan , Lizza Thania Meder Villa , Rahma Sari Melniya , Klau Seran Kondradus , Nur Prasetya Arvin , Dhiani Irdi Trissa , Umalekhoa Yotita , Riyanto Alex , Yoga Pranata Tri , Syam Hidayat Ahmad , Irawan Subandrio Erik
Published: October 2024

Developing village tourism in Indonesia is a crucial government strategy to boost the local economy and increase regional income. Villages with diverse assets such as natural beauty, rich cultural traditions, traditional cuisine, handicrafts, and historical sites have the potential to become attractive tourist destinations. This research focuses on Gunung Wangi Nature Tourism, which offers attractions such as sunset views, city lights at night, and camping activities. However, constraints such as inadequate facilities and infrastructure are the main focus of this research. Through a Community-Based Participatory Research (CBPR) approach, this research offers solutions to revitalize the facilities and infrastructure and a long-term revitalization strategy to increase the attractiveness of Gunung Wangi. Local community involvement is integrated into every research stage, including problem identification, Focus Group Discussion (FGD), implementation, and evaluation. Revitalization efforts at Gunung Wangi Nature Park have shown positive results, with substantial improvements reported in post-revitalization evaluations. Feedback from stakeholders, including visitors, MSME players, and Gunung Wangi Tourism village managers, showed significant improvements in infrastructure and visitor experience. While a few respondents suggested room for improvement, the overall success is evident in the increase in visitor numbers, with the majority experiencing a significant increase. This revitalization has rejuvenated this tourist spot's attractiveness and boosted economic growth in the local community
Aprendizaje Basado en Retos y Evaluación del Proyecto de Investigación
Authors: Flores Poma Irina Giovanna , Quincho Apumayta Raúl , Aguado Riveros Uldarico Inocencio , Chuquin Berrios Julima Gisella , Núñez Villazana Efraín , Salazar Mucha Wilfredo César , Melgar Tapia Gonzalo Nicolás , Salomé Maita Gina Eliana
Published: October 2024

La propuesta de un proyecto de investigación en posgrado requiere rigor y una clara definición de objetivos, metodología y problemas a abordar. Como destacan Posso et al. (2023), las universidades tienen una responsabilidad social de formar a los profesionales del futuro, lo que implica garantizar que los discentes desarrollen habilidades críticas, autonomía y pensamiento innovador. Sin embargo, existen falencias comunes en la elaboración de proyectos, como una definición inadecuada del problema, objetivos poco claros, y una metodología débil, que pueden afectar la calidad de los resultados, generando conclusiones erróneas y desperdicio de recursos. El Aprendizaje Basado en Retos (ABR), según Córdova et al. (2023), puede ser una solución a estas dificultades, fomentando la colaboración, la creatividad y la resolución de problemas, lo que fortalece la evaluación de proyectos. A través del ABR, los discentes pueden enfrentar desafíos reales, aplicar metodologías interdisciplinarias y generar soluciones innovadoras, todo mientras se optimizan recursos y se mejora la calidad del proceso formativo. Esta metodología no solo fomenta la independencia cognitiva, sino que también se adapta a las demandas del entorno profesional, como destacan varios estudios. Por ello se ha propuesto el objetivo de establecer la relación que tiene el ABR y la evaluación del proyecto de investigación en discentes de posgrado. La conclusión es La relación que tiene el Aprendizaje basado en retos y la evaluación del proyecto de investigación en discentes de posgrado es significativa.
Pemberdayaan Kelompok Disabilitas Tunarungu dalam Menjalankan Bisnis Inklusif dan Meningkatkan Pendapatan (Studi Kasus: Program Perintis, Kelurahan Lemahmekar, Indramayu)
Authors: Cahyo Purnomo Andromedo , Mohamad Zulkifli  , Ahmad Zaelani Adnan  , Roy Wijaya Kusuma
Published: October 2024

Penelitian ini bertujuan untuk menganalisis implementasi Program Perintis (Pemberdayaan Inklusi Teman Istimewa) secara umum dan mengetahui sejauh mana dampak sosial maupun ekonomi yang ditimbulkan dari program Perintis. Tulisan ini menggunakan metode penelitian studi deskriptif dengan pendekatan kualitatif. Pengumpulan data penelitian ini menggunakan teknik observasi, wawancara dan dukungan data sekunder mencakup dokumentasi program maupun data sekunder resmi dari pemerintah. Hasil penelitian menemukan bahwa Program Perintis menjadi wadah untuk beberapa disabilitas tuna rungu dalam mengembangkan potensi yang ada melalui kegiatan seperti, pengelolaan lingkungan melalui workshop inklusif dan bisnis kedai kopi dengan barista tuna rungu. Kegiatan-kegiatan dalam Kelompok Teman Istimewa ini berdampak pada meningkatnya kemampuan bersosialisasi para disabilitas tuna rungu. Sehingga, mereka mampu membuka diri untuk berhubungan dengan masyarakat. Selain itu, terdapat workshop inklusif yang menjadi wadah untuk menyalurkan kreatifitas mereka dalam mengolah bahan daur ulang sampah plastik menjadi berbagai produk seperti plakat, furniture, hiasan dinding, dsb. Sehingga, dari kegiatan-kegiatan tersebut kelompok Teman Istimewa mampu meningkatkan pendapatan mereka.
Pengaruh Foreign Ownership Terhadap Praktik Earnings Management Yang Dimoderasi Oleh Good Corporate Governance Pada Perusahaan Sektor Pertambangan Yang Terdaftar Di Bursa Efek Indonesia Tahun 2021-2023
Authors: Ramani Nabilah Rina , Yunita Khristina , Astarani Juanda
Published: October 2024

Salah satu masalah yang dapat mempengaruhi stabilitas ekonomi bisnis dalam jangka panjang adalah earnings management atau manajemen laba. Tujuan dilakukannya penelitian ini yakni untuk memberikan wawasan bagi para  pemangku kepentingan, sebagai bahan pertimbangan perusahaan sebelum melakukan tindakan tidak etis dan memberikan masukan bagi analis keuangan untuk meningkatkan pengawasan ketika mengidentifikasi aktivitas manajemen laba. Metode yang digunakan dalam penelitian ini adalah metode analisis regresi berganda. Dengan teknik penelitian purposive sampling dan memperoleh sebanyak 30 sampel sebagai bahan observasi. Target yang digunakan dalam penelitian ini adalah perusahaan sektor pertambangan yang terdaftar di Bursa Efek Indonesia tahun 2021-2023. Hasil akhir dari penelitian ini menunjukkan bahwa kepemilikan asing dan tata kelola perusahaan yang baik tidak berpengaruh terhadap manajemen laba, namun tata kelola perusahaan yang baik berpengaruh terhadap hubungan kepemilikan asing dengan manajemen laba.
Which Communication Style Best Explains Happiness in Social Relationships among Young People?
Authors: Alparslan Ali Murat , Baykur Merve Betül , Kocailik Kamuran
Published: October 2024

This study is a field research aimed at examining the communication styles that enhance happiness in social relationships among young individuals. One of the key concepts of the research, communication styles, refers to how individuals interact with others, while social well-being refers to the satisfaction individuals experience in their relationships with others. This research was conducted to understand which communication styles are more effective in supporting happiness in social relationships among young people. Data was collected through online and face-to-face surveys from 454 university students aged 18-24 from eight different universities in Turkey. Communication styles were measured using the Communication Styles Inventory (CSI), and social well-being was assessed through the Social Well-Being Scale, based on the PERMA model of positive psychology. The findings of correlation and regression analyses indicate that expressive communication style is positively associated with social well-being, while emotional and manipulative communication styles do not have a significant effect on social well-being. These results suggest that fostering expressive communication styles can increase happiness and satisfaction in social interactions among young people. In conclusion, the study highlights the positive impact of expressive communication styles on social well-being, suggesting that developing this style has the potential to enhance social integration and overall quality of life.
Sağlık Hizmet Kalitesinin Hasta Memnuniyeti ve Davranışsal Niyet Üzerine Etkisi: Hasta Güveninin Aracı Rolü
Authors: Sancar Tekin
Published: October 2024

Bu çalışmanın temel amacı, sağlık hizmet kalitesinin poliklinik hastalarının memnuniyeti ve davranışsal niyetleri üzerine etkisinde hasta güvenin aracılık rolünün olup olmadığını ortaya koymaktır. Araştırmanın ana kütlesini İstanbul Yedikule Göğüs Hatalıkları ve Göğüs Cerrahisi Eğitim ve Araştırma Hastanesinden sağlık hizmeti almış olan hastalar oluşturmuştur. Örneklem grubunu ise tesadüfi olmayan örnekleme yöntemlerinden kolayda örnekleme tekniği ile seçilen 400 hasta oluşturmaktadır. Bu çalışmada tanımlayıcı kesitsel çalışma tasarımı kullanılmıştır. Sağlık hizmet kalitesinin poliklinik hastalarının memnuniyeti ve davranışsal niyetleri üzerine etkisinde hasta güvenin aracılık rolünü test etmek için yol analizi yapılmıştır.Poliklinik hastalarının sağlık hizmet kalitesi algıları ve hasta memnuniyeti düzeyleri yaş gruplarına, eğitim durumlarına göre anlamlı bir şekilde farklılaşırken; poliklinik hastalarının hasta memnuniyeti düzeyleri, davranışsal niyet durumları ve hasta güveni durumları cinsiyetlerine ve meslek gruplarına göre anlamlı bir şekilde farklılık göstermiştir. Buna göre; sağlık hizmet kalitesinin hasta memnuniyetine ve hastaların davranışsal niyetine etkisi istatistiksel olarak anlamlı ve pozitif yönlü olarak bulunmuştur. Ayrıca hasta güveni, hastaların sağlık hizmet kalitesi algılarının onların memnuniyetleri ve davranışsal niyetlerine etkisine kısmi aracılık etmektedir.
A Comprehensive Review of Effective Patient Counseling by Healthcare: Principles, Practices, and Outcomes
Authors: Vimalesh M. , Naveena B.
Published: October 2024

Effective patient counseling is an important aspect in healthcare which helps the patient to understand the treatment, comply with it and helps in better health outcomes. This review highlights the therapeutic alliance which is based on compassion, cultural respect, attentive to patient needs and imparting education to the patient. Communication between the patient and the healthcare provides an important aspect where the medical language is simplified and the patient understands the diagnosis and treatment provided. When a healthcare provider empathizes with the patient, the patient builds trust and is willing to divulge other important aspects of their health which increases satisfaction and compliance in the care regimen. Besides that, active listening techniques support the patients' worthiness and equity in communication which helps to reinforce the patients’ clarification abilities. Cultural competence plays a central role in meeting the various challenges of patient care by respecting their values and health beliefs. The use of customized educational resources such as brochures, video clips and educational games encourages patient’s participation in making active decisions regarding their health care. Nevertheless, time constraints and patient overflow may hamper the level of counseling that is provided. There is a need for continuing education to ensure that the health providers are trained on appropriate communication and counseling techniques. Most importantly, development of health systems that champion effective communication, compassion and respect for diversity with patients will improve health outcomes, patient satisfaction and adherence to treatment.
Smallholder Farmers’ Perception of Land Conflict: A Case Study of Mara Chiefdom, Bombali District, Sierra Leone
Authors: Darlington Lavalie Nabieu
Published: October 2024

This research aimed to assess the perceptions of smallholder farmers in Mara chiefdom, Bombali District, regarding land conflicts. It focused on investigating types, causes, impacts, and strategies for mitigating these conflicts. Quantitative and qualitative study was used, with 80 household head farmers from four communities and four (4) focus group Discussions. Data was collected through primary methods, including questionnaires and focus group discussions. Results from the research revealed that the prevailing types of land conflicts are family, individual, and land use conflict. Factors responsible for these conflicts are the weak nature of national and local policies, the increase in population, and gender biases in terms of allocation of land and settling of land disputes. Conflicts impact humans, the environment, and society, and dialogue has effectively addressed these conflicts. The study suggests the government should collaborate with landowners, raise land policy awareness, engage farmers, cattle rearers, Sun Bird Bio Energy Company, formerly Addax, and establish a local control mechanism. It also recommends community consent for land custodians to avoid misuse. Future research should involve a large-scale study for more reliable findings.
Exploring the Role of UAVs in Combating Air Pollution: Applications and Impact
Authors: Roy Soham , Arun Dev , D. Parekh Vihaan
Published: October 2024

As environmental concerns are on the rise with the advent of pollution in metropolitan cities, Unmanned Aerial Vehicle (UAV) technology has the potential to mitigate air pollution through a variety of applications. This paper aims to shed light on the practical benefits of integrating UAVs into pollution management strategies.
Evaluation of Load-Bearing Capacity in Japanese Arch Steel Aqueduct Bridge through Structural Redundancy Assessment
Authors: Mohammadi Nima , Kuwata Yasuko
Published: October 2024

Structural redundancy assessment of steel aqueduct bridges is made by the analysis of a case study using the Musota Aqueduct bridge structure: a simply supported steel arch bridge erected in 1973 and a seven- span continuous steel aqueduct bridge. In this paper, as a case study, after the validation of the model, the structural redundancy of the Musota aqueduct bridge in Wakayama City with respect to its load-carrying capacity after the failure of hanging components due to corrosion was investigated. The conventional procedure for the assessment of redundancy makes use of static nonlinear structural analysis. A three-dimensional finite-element model of this bridge was developed to simulate its behavior. The results from the linear analysis are compared with those from the nonlinear analysis to investigate the appropriateness of the former in the evaluation of redundancy. A detailed nonlinear static finite element study is carried out into the hangers' components of the arch bridge in order to clarify the implications involved in the failure of redundancy. Finally, recommendations for prudent bridge maintenance methods are presented based on findings from the investigation.
Subgrade performance assessment for rigid runway using long-term pavement performance database
Authors: Liu Guo-Guang , Pei Lei-Yang , Wu Zhi-Wei
Published: October 2024

Maintaining desired subgrade performance is an effective way to reduce runway pavement deterioration. Due to lack of extensive field test data, life-cycle performance of runway subgrade has not been fully understood. In order to quantitatively estimate subgrade condition, a novel method of evaluating subgrade performance was developed and validated using the 726 sets of Heavy Weight Deflectometer (HWD) test data of ten runway sections. Statistical analysis demonstrates that the structural behaviour of rigid runway subgrade follows normal distribution in different service stages and can be efficiently evaluated by the subgrade performance index (ψ). The results of factor analysis show that Accumulated Air Traffic Volume (ATV) during service life is the major cause of spatial variations in subgrade condition. In the designed service period of runway, it validates that sea-reclaimed subgrade results in faster degradation in the initial stage of service life while thicker pavement exhibits better capability in protecting the subgrade soil in long-term view. Besides, the differences in applied loads and pavement thickness give rise to the subgrade performance variation in longitudinal direction. Meanwhile, the comparison between the main and the less trafficked test lines in transversal direction reveals that the aircraft impacts play a positive role in resisting the natural fatigue process. By the suggested method, subgrade performance of HWD test points can be categorized into 4 levels from “Excellent”, “Good”, “Fair” to “Poor” based on ψ value. It is helpful for airport agency to make scientific decisions on Maintenance and Rehabilitation (M&R) treatment by calculating the effective area of envelope (β) using the ratio of subgrade performance (η).
The Metallicity Dilution in Local Massive Early-type Galaxies
Authors: Wu Yu-zhong , Zhang Wei
Published: October 2024

We derive a sample of 114 Baldwin–Phillips–Terlevich-diagram star-forming and Wide-field Infrared Survey Explorer (WISE) low-star-formation-rate early-type galaxies (ETGs) by utilizing the criterion W2 − W3 < 2.5 (where W2 and W3 are the wavelengths of 4.6 and 12 μm in the WISE four bands) and cross matching the Galaxy
Zoo 1 and the catalog of the Sloan Digital Sky Survey (SDSS) Data Release 7 Max Planck Institute for Astrophysics-Johns Hopkins University emission-line measurements. We find that ∼28% of our ETGs exhibit a metallicity that is at least 2 standard deviation (0.26 dex) below the mass–metallicity (MZ) relation of star-forming galaxies (SFGs) from the SDSS. We demonstrate that almost all of our ETGs locate below the “main sequence” of SFGs. We find that these ETGs with larger metallicity deviation from the MZ relation tend to have lower SFR and redder color. By exploring the dilution properties of these massive ETGs, we report that the dilution effect may be mainly attributed to the inflow of metal-poor gas from mergers/interaction or the intergalactic medium.
Determining the Extents, Geometries, and Kinematics of Narrow-line Region Outflows in Nearby Seyfert Galaxies
Authors: Polack Garrett E. , Revalski Mitchell , Crenshaw D. Michael , Fischer Travis C. , Schmitt Henrique R. , Kraemer Steven B. , Meena Beena , Rafelski Marc
Published: October 2024

Outflowing gas from supermassive black holes in the centers of active galaxies has been postulated as a major contributor to galactic evolution. To explore the interaction between narrow-line region (NLR) outflows and their host galaxies, we use Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS) spectra and Wide Field Camera 3 (WFC3) images of 15 nearby (z < 0.02) active galactic nuclei (AGN) to determine the extents and geometries of their NLRs. We combine new HST WFC3 continuum and [O iii] λ5007 images of 11 AGN with four archival AGN to match existing spectra from HST STIS. For the six AGN with suitable long-slit coverage of their NLRs, we use isophotal fitting of ground-based images, continuum-subtracted [O iii] images, and the STIS spectra, to resolve, measure, and de-project the gas kinematics to the plane of the host galaxy disk and distinguish NLR outflows from galaxy rotation and/or kinematically disturbed gas. We find an average [O iii] extent of ∼680 pc with a correlation between gas extent and [O iii] luminosity of R
[O III] ∝

L

[
O

III
]

0.39

. The measured extents depend strongly on the depth of the [O iii] images, highlighting the importance of adopting uniform thresholds when analyzing scaling relationships. The outflows reach from 39% to 88% of the full NLR extents, and we find that all six of the AGN with STIS coverage of their entire NLRs show strong kinematic evidence for outflows, despite previous uncertainty for these AGN. This suggests that NLR outflows are ubiquitous in moderate-luminosity AGN and that standard criteria for kinematic modeling are essential for identifying outflows.
Abundant Molecular Gas in the Central Region of Lenticular Galaxy PGC 39535
Authors: Cui 崔 Jiantong 健童 , Gu Qiusheng , Lu Shiying , Chen Zhengyi , Xu Can , Gao Zeyu
Published: October 2024

Lenticular galaxies (S0s) in the local Universe are generally absent of recent star formation and lack molecular gas. In this paper, we investigate one massive (M
* ∼ 5 × 1010
M
⊙) star-forming S0, PGC 39535, with the Northern Extended Millimeter Array (NOEMA). Using optical data from the Sloan Digital Sky Survey IV Mapping Nearby Galaxies at the Apache Point Observatory survey, we find star formation mainly concentrates in the central region of PGC 39535. The total star formation rate estimated using extinction-corrected Hα flux is 1.57 M
⊙ yr−1. The results of the NOEMA observation suggest that the molecular gas mainly concentrates in the central regions as a gaseous bar and a ring-like structure, and shows similar kinematics as the stellar and ionized gas components. The total molecular gas mass estimated from CO(1–0) is (5.42 ± 1.52) × 109
M
⊙. We find PGC 39535 lies on the star-forming main sequence but falls below the Kennicutt–Schmidt relation of spiral galaxies, suggesting that the star formation efficiency may be suppressed by the massive bulge. The existence of a second Gaussian component in the CO spectrum of the central region indicates possible gas flows. Furthermore, our analyses suggest that PGC 39535 resides in the center of a massive group and the derived star formation history indicates it may experience a series of gas-rich mergers over the past 2–7 Gyr.
Interpreting Mass and Radius Measurements of Neutron Stars with Dark Matter Halos
Authors: Shawqi Shafayat , Morsink Sharon M.
Published: October 2024

The high densities of neutron stars (NSs) could provide astrophysical locations for dark matter (DM) to accumulate. Depending on the DM model, these DM admixed NSs (DANSs) could have significantly different properties than pure baryonic NSs, accessible through X-ray observations of rotation-powered pulsars. We adopt the two-fluid formalism in general relativity to numerically simulate stable configurations of DANSs, assuming a fermionic equation of state (EOS) for the DM with repulsive self-interaction. The distribution of DM in the DANS as a halo affects the path of X-rays emitted from hot spots on the visible baryonic surface, causing notable changes in the pulse profile observed by telescopes such as NICER, compared to pure baryonic NSs. We explore how various DM models affect the DM mass distribution, leading to different types of dark halos. We quantify the deviation in observed X-ray flux from stars with each of these halos. We identify the pitfalls in interpreting mass and radius measurements of NSs inferred from electromagnetic radiation and constraining the baryonic matter EOS if these dark halos exist.
Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars
Authors: Tahmasebzadeh Behzad , Dattathri Shashank , Valluri Monica , Shen Juntai , Zhu Ling , Wheeler Vance , Gerhard Ortwin , Kataria Sandeep Kumar , Beraldo e Silva Leandro , Daniel Kathryne J.
Published: October 2024

Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at the center (CX) or are off-centered (OX). Orbital studies indicate that various orbital types can generate X-shaped structures. Here we provide a classification approach that identifies the specific orbit families responsible for generating OX- and CX-shaped structures. Applying this approach to three different N-body bar models, we show that both OX and CX structures are associated with the x1 orbit family, but OX-supporting orbits possess higher angular momentum (closer to x1 orbits) than orbits in CX structures. Consequently, as the bar slows down, the contribution of higher angular momentum OX-supporting orbits decreases and that of lower angular momentum orbits increases, resulting in an evolution of the morphology from OX to CX. If the bar does not slow down, the shape of the BP/X structure and the fractions of OX/CX-supporting orbits remain substantially unchanged. Bars that do not undergo buckling but that do slow down initially show the OX structure and are dominated by high angular momentum orbits, transitioning to a CX morphology. Bars that buckle exhibit a combination of both OX- and CX-supporting orbits immediately after the buckling but become more CX dominated as their pattern speed decreases. This study demonstrates that the evolution of BP/X morphology and orbit populations strongly depends on the evolution of the bar angular momentum.
Reconstructing the Genealogy of LIGO-Virgo Black Holes
Authors: Mahapatra Parthapratim , Chattopadhyay Debatri , Gupta Anuradha , Antonini Fabio , Favata Marc , Sathyaprakash B. S. , Arun K. G.
Published: October 2024

We propose a Bayesian inference framework to predict the merger history of LIGO-Virgo binary black holes (BHs), whose binary components may have undergone hierarchical mergers in the past. The framework relies on numerical relativity predictions for the mass, spin, and kick velocity of the remnant BHs. This proposed framework computes the masses, spins, and kicks imparted to the remnant of the parent binaries, given the initial masses and spin magnitudes of the binary constituents. We validate our approach by performing an “injection study” based on a constructed sequence of hierarchically formed binaries. Noise is added to the final binary in the sequence, and the parameters of the “parent” and “grandparent” binaries in the merger chain are then reconstructed. This method is then applied to three GWTC-3 events: GW190521, GW200220_061928, and GW190426_190642. These events were selected because at least one of the binary companions lies in the putative pair-instability supernova mass gap, in which stellar processes alone cannot produce BHs. Hierarchical mergers offer a natural explanation for the formation of BHs in the pair-instability mass gap. We use the backward evolution framework to predict the parameters of the parents of the primary companion of these three binaries. For instance, the parent binary of GW190521 has masses

72

−
22

+
32

M

⊙

and

31

−
23

+
24

M

⊙

within the 90% credible interval. Astrophysical environments with escape speeds ≥100 km s−1 are preferred sites to host these events. Our approach can be readily applied to future high-mass gravitational wave events to predict their formation history under the hierarchical merger assumption.
Learning the Universe: GalactISM Simulations of Resolved Star Formation and Galactic Outflows across Main-sequence and Quenched Galactic Environments
Authors: Jeffreson Sarah M. R. , Ostriker Eve C. , Kim Chang-Goo , Gensior Jindra , Bryan Greg L. , Davis Timothy A. , Hernquist Lars , Hassan Sultan
Published: October 2024

We present a suite of six high-resolution chemodynamical simulations of isolated galaxies, spanning observed disk-dominated environments on the star-forming main sequence, as well as quenched, bulge-dominated environments. We compare and contrast the physics driving star formation and stellar feedback among the galaxies, with a view to modeling these processes in cosmological simulations. We find that the mass loading of galactic outflows is coupled to the clustering of supernova explosions, which varies strongly with the rate of galactic rotation Ω = v
circ/R via the Toomre length, leading to smoother gas disks in the bulge-dominated galaxies. This sets an equation of state in the star-forming gas that also varies strongly with Ω, so that the bulge-dominated galaxies have higher midplane densities, lower velocity dispersions, and higher molecular gas fractions than their main-sequence counterparts. The star formation rate in five out of six galaxies is independent of Ω and is consistent with regulation by the midplane gas pressure alone. In the sixth galaxy, which has the most centrally concentrated bulge and thus the highest Ω, we reproduce dynamical suppression of the star formation efficiency in agreement with observations. This produces a transition away from pressure-regulated star formation.
Coordinated JWST Imaging of Three Distance Indicators in a Supernova Host Galaxy and an Estimate of the Tip of the Red Giant Branch Color Dependence
Authors: Hoyt Taylor J. , Jang In Sung , Freedman Wendy L. , Madore Barry F. , Lee Abigail J. , Owens Kayla A.
Published: October 2024

Boasting a 6.5 m mirror in space, JWST can increase by several times the number of supernovae (SNe) to which a redshift-independent distance has been measured with a precision distance indicator (e.g., tip of the red giant branch (TRGB) or Cepheids); the limited number of such SN calibrators currently dominates the uncertainty budget in distance ladder Hubble constant (H
0) experiments. JWST/NIRCAM imaging of the Virgo Cluster galaxy NGC 4536 is used here to preview JWST program GO-1995, which aims to measure H
0 using three stellar distance indicators (Cepheids, TRGB, and J-branch asymptotic giant branch/carbon stars). Each population of distance indicator was here successfully detected—with sufficiently large number statistics, well-measured fluxes, and characteristic distributions consistent with ingoing expectations—so as to confirm that we can acquire distances from each method precise to about 0.05 mag (statistical uncertainty only). We leverage overlapping Hubble Space Telescope imaging to identify TRGB stars, crossmatch them with the JWST photometry, and present a preliminary constraint on the slope of the TRGB’s F115W versus (F115W – F444W) relation equal to −0.99 ± 0.16 mag mag−1. This slope is consistent with prior slope measurements in the similar Two Micron All-Sky Survey J band, as well as with predictions from the BaSTI isochrone suite. We use the new TRGB slope estimate to flatten the 2D TRGB feature and measure a (blinded) TRGB distance relative to a set of fiducial TRGB colors, intended to represent the absolute fiducial calibrations expected from geometric anchors such as NGC 4258 and the Magellanic Clouds. In doing so, we empirically demonstrate that the TRGB can be used as a standardizable candle at the IR wavelengths accessible with JWST.
Unveiling the Connection between the Alfvénic Oval and the Open–Closed Field Line Boundary at Ganymede
Authors: Yan Tao , Zhang Binzheng , Chen Junjie , Yang Ziyi , Ye Shengyi , Cui Jun
Published: October 2024

Alfvén waves generated by the interactions between the Ganymede magnetosphere and the fast-corotating Jovian plasma carry a significant amount of energy. This energy is partially transferred to precipitating particles, which correspond to a feature called the Alfvénic oval. However, the spatial distribution of the Alfvénic oval in the Ganymede system is unclear, and the physical correlation between the Alfvénic oval and the open–closed field line boundary (OCFB) has not been studied quantitatively. Using a high-resolution, three-dimensional global magnetohydrodynamics simulation of Ganymede's magnetosphere, we investigate the spatial distribution of the Alfvénic oval mapped on the ionosphere surface of Ganymede based on upstream measurements from Juno's PJ34 flyby. Our results show that (1) the simulated Alfvénic oval of Ganymede closely resembles the observed aurora oval, and although without kinetic physics, the magnitude of the simulated Afvénic Poynting flux is significantly lower than the estimation based on auroral luminosity; (2) the OCFB aligns closely with the poleward (equatorial) boundary of the enhanced Alfvénic power on the downstream (upstream) side; and (3) the magnetospheric flux tube convection pattern can guide the Alfvénic wave packet to propagate toward latitudes either equatorward or poleward of the OCFB on the downstream/upstream side. These results, presented for the first time in this study, provide testable predictions for both the ongoing Juno mission and future Jovian missions such as JUICE probing the minimagnetosphere system.
Fermentation of soymilk with Lactobacillus acidophilus enhances the functional attributes and health-promoting properties
Authors: Ashraf Syed Amir , Elkhalifa Abd Elmoneim O. , Al-Shammari Eyad , Awadelkareem Amir Mahgoub , Kuddus Mohammad , Kumar Mitesh , Sachidanandan Manojkumar , Azad Z. R. Azaz Ahmad , Adnan Mohd
Published: October 2024

Fermented soymilk is a traditional oriental food beverage that has various health benefits due to its bioactive compounds. However, the fermentation process and the probiotic strains used can affect the quality and functionality of fermented soymilk. In this study, we designed to develop a novel functional food by fermenting soymilk with Lactobacillus acidophilus (L. acidophilus), a probiotic bacterium that can improve microbiota present in intestine and modulate the immune system. We evaluated the physicochemical, microbiological and sensory attributes of the fermented soymilk, as well as its total phenolic, flavonoids, free amino acids, antioxidant and anticancer activities. The results revealed that L. acidophilus had ability to grow well and produce lactic acid in soymilk, resulting in a pH of 4.4 and a titratable acidity of 0.72 g of lactic acid per 100 mL after 12 h of fermentation. The fermented soymilk had a smooth texture, a pleasant aroma and a sour taste, and was well accepted by the panelists. The fermented soymilk also exhibited a good amount of total phenolic, flavonoids, free amino acids with high antioxidant activity towards DPPH free radicals (IC50 = 55.51 µg/mL) and the inhibition of human colorectal cancer cells (HCT-116) in a dose-dependent manner (IC50 = 67.13 µg/mL). Overall, these findings suggest that fermented soymilk with L. acidophilus is a novel functional food with potential therapeutic values for the prevention and treatment of oxidative stress, cancer and metabolic disorders.
Fisher discriminant analysis of multimodal ultrasound in diagnosis of cervical metastatic lymph nodes in papillary thyroid cancer
Authors: Wang Yixuan , Han Yue , Li Fei , Lin Yuyang , Wang Bei
Published: October 2024

Background/Aims: The purpose of this study was to develop a diagnostic model utilizing multimodal ultrasound parameters to aid in the detection of cervical lymph node metastasis in papillary thyroid cancer (PTC) patients.Methods: The study included 84 suspicious lymph nodes from 69 PTC patients, all of whom underwent fine needle aspiration with pathological results. Data from conventional grayscale ultrasound, shear wave elastography (SWE), and superb microvascular imaging were analyzed. Key ultrasound features were compared between benign and metastatic groups to create a diagnostic model using Fisher’s stepwise discriminant analysis. The model’s effectiveness was assessed with self-testing, cross-validation, and receiver operating characteristic curve analysis.Results: Four features, namely lymphatic hilum (X1), cortical hyperechogenicity (X2), vascular pattern (X4), and SWEmean (X7), were integral to the discriminant analysis, resulting in the equation: Y1 = -3.461 + 2.423X1 + 0.321X2 + 1.620X4 + 0.109X7, Y2 = -8.053 + 0.414X1 + 2.600X2 + 2.504X4 + 0.192X7. If Y1 < Y2, the LN would be diagnosed as metastatic lymph nodes. The model demonstrated an area under the curve of 0.833, with a sensitivity of 83.33% and specificity of 83.33%.Conclusions: The multimodal ultrasound diagnostic model, established through Fisher’s stepwise discriminant analysis, proved effective in identifying metastatic lymph nodes in PTC patients.
Les liens entre environnement et santé : perspective historique et épistémologique
Authors: Vonarx Nicolas
Published: October 2024

La notion d’environnement s’entend et se repère un peu partout aujourd’hui sur le terrain des sciences de la santé. Ses liens avec la santé sont rapportés et définis depuis longtemps en médecine, en soins infirmiers et en santé publique. Ce texte analyse ces liens sous la forme de regard et de construction en reprenant un fil historique et en abordant notamment les théories médicales hippocratiques et aéristes, la médecine urbaine et le courant hygiéniste du XVIII e et du XIX e siècle. Il présente une conceptualisation matérialiste, topographique et exposée de l’environnement qui domine dans le champ des savoirs et qui guide les interventions. Il montre en conclusion combien celle-ci réduit le lien entre environnement et santé, en gardant dans l’ombre certaines dimensions incarnées de l’environnement, notamment sociales, politiques, esthétiques et sensorielles.
L’autoefficacité des infirmières en soins critiques : une analyse de concept évolutionniste
Authors: Charette Martin , Mileto Elisa , Marceau Mélanie
Published: October 2024

Introduction : les infirmières en soins critiques sont exposées à plus de risques au niveau de leur santé mentale. Le concept d’autoefficacité a été maintes fois relié à un impact positif sur la vulnérabilité au stress et la performance, depuis son émergence dans les années 1970. Bien que les écrits soient riches à ce sujet, peu d’auteurs se sont penchés sur l’autoefficacité des infirmières en soins critiques. Méthode : cet article rapporte une analyse du concept d’autoefficacité des infirmières dans un contexte de soins critiques en utilisant la méthode évolutionniste de Rodgers. Résultats : une recension des écrits à partir des banques de données a identifié 28 articles publiés entre 2009 et 2023. Cette démarche a permis de mettre en relief plusieurs antécédents reliés : l’expérience acquise via l’exposition aux situations, les connaissances, le sentiment d’être en contrôle et l’apprentissage par les pairs. Des attributs comme la confiance, la subjectivité, le sentiment de maîtrise ainsi que la nature critique des interventions ont par ailleurs été identifiés. Enfin, plusieurs conséquents tant à l’échelle personnelle qu’organisationnelle ont été relevés. Discussion : ce travail contribue à l’établissement de bases théoriques guidant des interventions de promotion et de développement de l’autoefficacité soutenant les infirmières, les patients et l’ensemble des milieux de soins critiques.
Genealogía de la conversión: de la epistrophe platónica a la metanoia cristiana en la obra de M. Foucault
Authors: Expósito Serrano Jorge
Published: October 2024

En este trabajo estudiamos la genealogía de la conversión cristiana (metanoia) analizada por Foucault en Las confesiones de la carne y, previamente, en el curso Del gobierno de los vivos. Para entender la especificidad de la metanoia cristiana, proponemos una lectura comparada de dichos textos y La hermenéutica del sujeto —donde se exponen otros dos modelos de conversión: el platónico y el helenístico-romano—. Esto nos permitirá comprender en qué medida la metanoia —tal como se la entenderá a partir de Tertuliano (siglo III)— contribuye, según Foucault, a configurar la experiencia cristiana de la carne, reflejando un cambio fundamental en la subjetividad occidental.
Una teoría pame de la fuerza: el caso de los xi'iui de la Sierra Gorda de Querétaro, México
Authors: Aguirre Mendoza Imelda
Published: October 2024

En este texto se analiza el término de fuerza (mana’ap) como un concepto nativo formulado por los pames (xi’iui) de la Sierra Gorda de Querétaro. Éste se encuentra relacionado con aspectos como la sangre, el alimento, lo frío, lo caliente, los aires y sus efectos en el cuerpo. Se observa que, para este pueblo, la fuerza es algo que se produce de manera continua, y, por ende, tiende a perderse ante diversas circunstancias. Para entender las dinámicas y flujos de la fuerza, se hace énfasis en las cualidades de la sangre – elemento inherente a la fuerza –, posteriormente se advierten los fenómenos y situaciones que llevan a su pérdida, y por consiguiente, a la merma de fuerza, para finalmente, explicar cuáles son las posibles vías para su reposición.
L’écriture de la mémoire de l’expérience migratoire dans le cinéma grec contemporain : Third Kind (Zois, 2018) et Des spectres hantent l’Europe (Kourkouta et Giannar, 2016)
Authors: Peluchon Sacha
Published: October 2024

L’article propose une analyse esthétique du court-métrage de fiction Third Kind de Yorgos Zois (2018) et du long-métrage documentaire Des spectres hantent l’Europe de Maria Kourkouta et Niki Giannar (2016). Il interroge les modalités du regard mis en scène sur les personnes migrantes qui cherchent à traverser la Grèce et qui sont filmées alors qu’elles se retrouvent bloquées dans différents camps. La question est de savoir à qui appartient la mémoire qui s’écrit cinématographiquement : aux personnes qui effectuent ce périple ou à celles et ceux qui les regardent ? L’analyse porte sur le paradoxe du caractère d’invisibilité des personnes migrantes qui sont pourtant le sujet principal des œuvres, puis sur le choix des temporalités pour représenter cette expérience. Celle-ci renvoie à une situation d’urgence saisie dans son instantanéité, et pourtant simultanément inscrite dans le long cours de l’Histoire et par conséquent renvoyée à un récit déjà écrit, situé au passé. Il sera en définitive question d’interroger le rapport en tant que spectateur·rice à une situation présentée comme hors de sa visibilité, hors de son temps et donc hors de sa portée.
Greek-language education abroad and ‘New’ Migration: the case of the Greek schools in Germany
Authors: Chatzidaki Aspasia
Published: October 2024

This paper reports on a qualitative study investigating a particular type of Greek-language education abroad (‘non-mixed’ Greek schools in Germany) and how their teachers view the functions such educational settings serve in the era of ‘new’ migration from Greece. These schools (K-12) follow the Greek curricula and employ teachers seconded from Greece. Following the decision of Greek authorities to start abolishing them in 2011, Greek non-mixed schools saw their students’ numbers wane. ‘New’ migration, however, has led to an important increase in enrolments and a change in the student population’s profile. Οur findings suggest that teachers consider them as irreplaceable, not only because they help maintain a sense of Greek identity among immigrant youths but also because they are believed to be the only educational institution which covers the needs of ‘new’ immigrant students facing important educational and psychological challenges.
Immigrants Τhen and Νow. The Synaxary of Andreas Kordopatis by Thanasis Valtinos at the Antonis Antoniou Theatrical Stage
Authors: Antoniou Michaela
Published: October 2024

The Synaxary of Andreas Kordopatis by Thanasis Valtinos was published serially in the magazine Tahydromos in 1964 and was first published in 1978 by Kedros Publications. In the first of two books about Kordopatis, subtitled America, Valtinos recounts the adventures of Andreas Kordopatis, a real person, from Dara, Mantinea, and his repeated attempts to emigrate to the United States in search of a better life. Antonis Antoniou, fascinated by the text since its first publication, decided to adapt it for the stage in the winter of 2011. This choice is, of course, not an accidental one. The actor and director sees the relevance of the two eras and considers Valtinos’ play to be timely at a time when another wave of immigrants is flowing out of Greece during the economic crisis of the 21st century. The article briefly introduces this particular play by Valtinos, examines Antoniou’s selection of excerpts and analyses the stage presentation of the text and the performance. Most importantly, it identifies and highlights the parallel trajectories of the migrant in the era of Kordopatis, the era of the writing of the text, and the era of the performance, attempting to trace differences and similarities, but ultimately the essence of the driving force of migration. Important aspects of the paper are the success of the production, but also the monologue as both a genre, aiming, among other things, at introspection, and as a practical choice in a period of economic crisis.
La représentation et la perception de la xenitia dans la poésie orale de l’île de Karpathos
Authors: Nittis Mélanie
Published: October 2024

L’exil de la population grecque est une réalité qui a largement inspiré la création de chants populaires depuis les chants démotiques de l’époque byzantine jusqu’aux chansons urbaines créées à partir de la fin du xixe siècle. Le village d’Olympos dans l’île de Karpathos connaît lui aussi un dépeuplement de plus en plus important, et ce thème de l’exil continue d’y être chanté encore aujourd’hui lors de glentia, des fêtes diverses de la communauté villageoise, auxquelles participent aussi ceux qui ont émigré. L’exil est évoqué, d’une part, dans les chants démotiques qui ont été transmis oralement de génération en génération et, d’autre part, dans les distiques appelés mantinades qui sont créés par les hommes lors de l’improvisation poétique chantée. La représentation de la xenitia à travers la poésie orale de ces chants reflète la perception de l’exil au sein de cette communauté rurale dont la plupart de ses membres vivent en dehors du village.
Littérature et migration : imaginaire littéraire national, créolisation, cybermigration
Authors: Coavoux Sophie
Published: October 2024

Si la rencontre entre migration et littérature n’est pas un phénomène nouveau dans l’espace grec, elle voit se dessiner, depuis les années 1990, de nouveaux horizons. La reconfiguration des expériences migratoires, le contexte mondial de mobilité transnationale, le renouvellement des écritures migrantes dans un monde globalisé, comme la cybermigration de la littérature à l’ère d’internet ne s’accommodent plus du paradigme de la littérature nationale, longtemps circonscrit dans l’imaginaire de la nation. Ces nouvelles écritures en mouvement produites par la « créolisation » des identités nationales (Édouard Glissant) imposent tout à la fois un décentrement et un tournant critique. À visée essentiellement exploratoire, l’objet de cet article est d’esquisser un panorama des réflexions que suscitent ces mutations de la littérature comme des études littéraires dans l’espace grec et d’aborder quelques-uns des problèmes historiographiques et épistémologiques qu’elles soulèvent.