bluuebunny/crossref_metadata_2025 huggingface dataset:
Conceptual principles for determining the cost of project works for road works and services in the context of international experience
Authors:   State Enterprise «National Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine, Bezuglіy Artem , Hresko Ihor , Bibyk Yuliya ,   State Enterprise «National Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
Published: November 2024

ntroduction. The road sector is one of the industries governed by a large number of laws, regulations, and other normative-legal acts, many of which directly or indirectly affect it. Some of these require adaptation to the current conditions of the modern market and integration with the ongoing processes in the industry. Implementing new or amending existing normative-legal acts and regulatory documents is usually a complex process. Currently, Ukraine's economy is in a transitional period, largely due to military actions on its territory. Thus, addressing issues related to determining the cost of project works has become more relevant than ever. The concept of “price” is closely linked to the pricing factors that shape it, with pricing being a key part of achieving the strategic goals of enterprises. Pricing policy plays an important role in the lifecycle of project enterprises as it influences their development, creates a market environment, and allows for the continuation of activities and strategic planning for future development. Establishing a sound pricing policy involves research and gathering information about the market for road works and services, analyzing economic factors, and preparing projects to meet market needs and optimize their implementation. Changes in approaches to determining the cost of project works will help establish a sound pricing policy for project enterprises, which will contribute to the development of the road sector and, ultimately, the recovery of our country.
Machine learning modelling the rut depth of WMA mixtures with variable reclaimed asphalt pavement (RAP) and foamed bitumen content
Authors:   Széchenyi István University, Faculty of Civil Engineering, Győr, Hungary, Saleh Ali , Gáspár László ,   KTI Hungarian Institute for Transport Sciences and Logistics Non Profit Ltd., Budapest, Hungary
Published: November 2024

ntroduction. Rutting of flexible, super flexible and semi-rigid pavement structures is a typical and frequently decisive condition parameter, form of pavement deterioration. That is why, any research result in the field can have of high importance for the road engineers. Problem Statement Rutting poses a significant challenge to asphalt pavements, causing permanent deformation under heavy loads, particularly in warm and wet conditions. Purpose. This pavement distress type has — in addition to riding comfort challenges — important traffic safety consequences (e.g. aquaplaning), as well. The research work concentrates on the influence of the use of warm mix asphalt, reclaimed asphalt material and foamed bitumen binder on the rut depth of asphalt pavements.
CONSERVATIVE MANAGEMENT OF ODONTOGENIC MYXOMA IN THE MANDIBLE OF A TEENAGE FEMALE – A CLINICAL CASE REPORT
Authors: Mohamed Niazi K. Thanvir , Gurunathan Ulaganathan , Chandran Ruthi Shankari , Duraisamy Nagalingam , Murugesan Valarmathi
Published: November 2024

Background: Odontogenic myxoma is a benign, locally invasive, aggressive, nonmetastasizing neoplasm of the jaw bones, comprising of 3-16%
of all Odontogenic tumors. It has variable radiological and clinical presentations which entails thorough and prudent evaluation of the lesion.
Several of these characteristics overlap with those of other benign and some malignant tumors. Owing to the absence of a capsule and the gelatinous
nature of the ground substance, a high degree of recurrence is seen.We present a clinical case report of a teenage female diagnosed with
Odontogenic myxoma of mandible. A 19 year old female patient presented with a complaint of facial as Methods: ymmetry in the left side of the
jaw with occasional pain since three months. Radiological investigations revealed large expansile lesion involving 34,35,36,37 and impacted 38.A
Conservative Surgical management was performed comprising of Surgical enucleation of the lesion followed by Chemical cauterization.Results:
1 year follow up of the patient revealed no clinical or radiological evidence of recurrence and prosthetic rehabilitation was done at the end of 10
months with planning of implants at a later stage. Long term follow-up with radiologic surveillance Conclusion: is advocated in order to recognize
a possible recurrence.
Metodología para la validación de programas de cálculo de dosis en piel
Authors: Gañán Mora Antonio , Sánchez Casanueva Roberto Mariano , Fernández Soto José Miguel
Published: November 2024

Objective. A methodology for facilitating the validation of skin dose estimation programs for interventional procedures is presented.
Materials and methods. The methodology uses a series of irradiations stored as DICOM Radiation Dose Structured Reports (RDSRs) as well as reference skin dose values measured in each irradiation. Users must input the RDSRs to their program and compare output doses with reference doses.
The authors performed 27 irradiations using two C-arms from different manufacturers. For each irradiation, the authors modified parameters that affect skin dose and measured it with an ionization chamber placed under a water phantom. The methodology was applied to validate the program SkinDose 2D.
Results. Experimental measurements have an uncertainty of 13% (k=2). SkinDose 2D dose predictions differ from measurements in -9% to +8%, within experimental uncertainty.
Conclusions. Varying different parameters that affect skin dose, this methodology allows for an initial validation of skin dose programs, characterizing them before any other additional measurement done by the user.
Ukrainian encyclopedias in current socio-communicative challenges:
monography / O. Ishchenko, M. Stepanenko; ed. by M. Zhelezniak. Kyiv:
The NASU Institute of Encyclopedic Research, 2024. 304 р.
Authors: Ishchenko Oleksandr , Stepanenko Mykola
Published: November 2024

The monograph delves into pertinent issues within Ukrainian encyclopedic practices through the lens of contemporary social communications, focusing on the relationship between encyclopedia publishers and encyclopedia readers (users), thereby influencing the shaping, preparation, and dissemination of encyclopedic knowledge within society. It provides a comprehensive exploration of Ukrainian encyclopedic discourse within the paradigm of communicative pragmatics (linguistic pragmatics) for the first time: the main functions of this discourse are widely analyzed, such as informational, which involves the exchange of scientific knowledge between people; social, which shapes our thoughts, worldview in general; a directly pragmatic function that ensures the coordination of common actions between producers of encyclopedic content and its users.
Fen Bilgisi ve Matematik Öğretmen Adaylarının 21. Yüzyıl Becerileri Öz Yeterlik Algılarını Etkileyen Değişkenlerin Belirlenmesi
Authors: Özdemir Atilla , Şentürk Merve Lütfiye
Published: November 2024

Modern eğitim sistemlerinde giderek daha fazla önem kazanan 21. yüzyıl becerileri, yalnızca öğrencilerin akademik başarılarını artırmakla kalmamakta, aynı zamanda onların bireysel ve profesyonel yaşamlarında başarılı, yenilikçi ve uyumlu bireyler olmalarını da sağlamaktadır. Bu beceriler, eleştirel düşünme, problem çözme, iş birliği, dijital okuryazarlık ve yaratıcılık gibi temel yetkinlikleri içerir. Çalışmanın amacı, ilköğretim matematik ve fen bilgisi öğretmen adaylarının bu kritik 21. yüzyıl becerileri konusundaki öz yeterlik algılarına etki eden çeşitli değişkenleri belirlemek ve bu algıların gelişimini destekleyen faktörleri ortaya koymaktır. Bu sayede, öğretmen adaylarının eğitim süreçlerinde daha etkili olmaları ve öğrencilerine bu becerileri kazandırmada daha başarılı olmaları hedeflenmektedir. Çalışma, 330 öğretmen adayı ile gerçekleştirilmiş olup, kesitsel tarama modeline dayanmaktadır. Veriler, ‘21. Yüzyıl Becerileri Yeterlik Ölçeği’ kullanılarak toplanmıştır. Bulgular, öğretmen adaylarının 21. yüzyıl becerileri öz yeterlik algı düzeylerinin eğitim alma, sınıf düzeyi ve çalışma stili gibi değişkenlere göre farklılık gösterdiğini ortaya koyarken, cinsiyet, ailenin gelir düzeyi ve öğrenim gördükleri program gibi değişkenlerin bu algılar üzerinde anlamlı bir etkisinin olmadığını göstermiştir. Bu sonuçlar, öğretmen adaylarının mesleki gelişimlerini destekleyecek stratejilerin belirlenmesine yardımcı olabilir.
Introducción: TISP y comunicación, colaboración e inclusión: necesidades, retos y propuestas actuales
Authors: Vitalaru Bianca
Published: November 2024

El siglo XXI ha implicado numerosos cambios a nivel social, económico, educativo, sanitario, etc. propiciados por acontecimientos de diferentes tipos, como, por ejemplo, los constantes conflictos en diferentes puntos del planeta (entre ellos, el conflicto afgano o la guerra de Ucrania), los desastres naturales provocados por el cambio climático, o crisis sanitarias como la COVID-19 (Valero-Garcés y Alcalde Peñalver, 2024). Estas situaciones a menudo han resultado en crisis humanitarias que se han traducido en movimientos poblacionales a gran escala (Valero-Garcés y Alcalde Peñalver, 2024). Esta intensificación de los movimientos poblacionales ha supuesto un reto ya que ha llevado a la configuración de nuevas sociedades multiculturales en todo el planeta (Valero-Garcés y Lázaro Gutiérrez, 2016). Esta nueva realidad implica no solo convivencia, sino también el acceso de la población alófona acogida a derechos y servicios públicos básicos, además del cumplimiento de derechos humanos (Vitalaru, en prensa), para cuyo cumplimiento es imprescindible la comunicación en diferentes contextos. Las mismas características de la TISP, con su variedad de contextos y situaciones, implican una serie de desafíos para diferentes grupos (usuarios, proveedores de servicios, traductores e intérpretes) relacionados con la provisión y la disponibilidad de los servicios según el ámbito del que se trate, la disponibilidad de profesionales para todas las combinaciones lingüísticas implicadas, la existencia de programas de formación, la formación disponible, el acceso a dicha formación, etc. Estos desafíos se han ido detectando gracias a la práctica de la profesión así como a medida que ha ido investigando de manera más específica y todos están relacionados de alguna manera con la profesionalización.
Este artículo recopila las necesidades y retos planteados en diferentes estudios centrados en España, así como un resumen de los temas tratados en los artículos incluidos en este número temático de la revista. Las contribuciones de este número intentan ofrecer, desde diferentes perspectivas, reflexiones y acciones sobre los desafíos teniendo en cuenta la variedad de situaciones y tareas de la TISP. Al tratarse de un número temático especial, el número incluye solamente  artículos y entrevistas.
PSIT communication, collaboration, and inclusion: needs, challenges, and current proposals
Authors: Vitalaru Bianca
Published: November 2024

The 21st  century has involved several changes at the social, economic, educational, health, etc. levels, brought about by events of different types, such as, for example, the constant conflicts in different parts of the world (including the Afghan conflict or the war in Ukraine), natural disasters caused by climate change, or health crises such as COVID-19 (Valero-Garcés and Alcalde Peñalver, 2024). These situations have often resulted in humanitarian crises that have involved large-scale population movements (Valero-Garcés and Alcalde Peñalver, 2024). This increase in population movements has been a challenge in itself as it has led to the configuration of new multicultural societies across the globe (Valero-Garcés and Lázaro Gutiérrez, 2016). This new reality implies not only coexistence but also access to basic public rights and services for the host population who does not speak the main language as well as the fulfilment of human rights (Vitalaru, forthcoming); in these different contexts, communication is essential. The very characteristics of PSIT, with its variety of contexts and situations, imply a series of challenges for different groups (users, service providers, and translators and interpreters) related to the provision and availability of services; provision and availability depend on the field in question, the availability of professionals for all the language combinations involved, the existence of training programmes, the quality of the training available, access to such training, etc. These challenges have been identified through the practice of the profession as well as through more specific research and are all related in some way to professionalisation.
This article gathers some of the needs and challenges raised in different studies focused on Spain, as well as a summary of the topics covered in the articles included in this thematic issue of the journal. The contributions in this issue attempt to offer, from different perspectives (professional practice, training, and research), results, reflections, and actions considering the variety of PSIT situations and tasks. As this is a special thematic issue, the issue includes only articles and interviews.
Los Títeres como Técnica para Mejorar el Desarrollo Emocional de los Niños del Primer Año de Educación Básica
Authors: Quichimbo Agila Alexandra del Carmen , Guarnizo Cajamarca Johanna Elizabeth , Betancourt Jiménez Carmen Andrea , Quirola Yanza Adrian Enrique , Sánchez Patiño Edinson Stalin
Published: November 2024

La presente investigación denominada: Los títeres como técnica para mejorar el desarrollo emocional de los niños del primer año de educación básica paralelo b de la unidad educativa José Ángel Palacio de la ciudad de Loja; tuvo como objetivo analizar los beneficios del uso de los títeres como técnica para mejorar el desarrollo emocional de los niños; los métodos fueron: descriptivo, científico, deductivo y analítico- sintético; la muestra fue de una docente y 22 niños; entre la técnica e instrumento utilizado estuvo la entrevista y la Evaluación del Desarrollo Emocional Infantil (EDEI) de Henao; en la revisión de la literatura se analizaron dos variables: los títeres y el desarrollo emocional. Los resultados del diagnóstico demostraron la dificultad en un nivel de riesgo en el desarrollo afectivo. Con la finalidad de mejorar esta problemática se aplicó una guía de actividades, la misma que permitió alcanzar un nivel normal de desarrollo emocional. Todo esto accede a afirmar que la ejecución de actividades dentro del proceso de enseñanza aprendizaje con títeres, contribuyen significativamente a desarrollar las habilidades imaginativas, expresivas para a través de ellas generar comprensión emocional y empatía en los niños investigados, por lo que se recomienda trabajar con actividades nuevas, innovadoras e interesantes, del disfrute de los niños, como son los títeres, que involucre estrategias, metodologías o herramientas para mejorar el desarrollo emocional, preparándolo para la vida.
Questions and controversies in the management of hypotension in preterm infants
Authors:   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania, Dan Adriana Mihaela ,   Department of Obstetrics, Gynaecology and Neonatology, Emergency University Hospital Bucharest, Bucharest, Romania, Mihai Magdalena Florina ,   Department of Obstetrics, Gynaecology and Neonatology, Emergency University Hospital Bucharest, Bucharest, Romania, Vasilescu Diana Iulia ,   “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania,   Department of Obstetrics, Gynaecology and Neonatology, Emergency University Hospital Bucharest, Bucharest, Romania,   Doctoral School, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
Published: November 2024

Hypotension is a frequent condition that affects preterm infants during the first days of life, within the transition period to an extra uterine environment, or associated with neonatal pathology. Persistent hypotension in the neonatal period is associated with increased neonatal morbidity and mortality. Understanding neonatal hemodynamics is the first step in approaching hypotensive neonatal patients. Treating hypotension should be to restore impaired blood flow and maintain cellular metabolism. Neonatologists should look beyond values of blood pressure and check for markers of low systemic blood flow and inadequate organ perfusion. There are many anti-hypotensive agents, but choosing the most appropriate intervention should take into consideration the underlying pathophysiologic process, the effectiveness versus side effects of the drug, and medium and long-term developmental outcomes. This article intends to review the therapeutic options for neonatal hypotension to offer the clinicians support for an evidence-based choice.
Desarrollo de la Inteligencia Espiritual en el nuevo paradigma de la Educación Religiosa desde una educación por competencias
Authors: Pocasangre Fonseca Marcia Victoria
Published: November 2024

Ante la realidad cambiante de la sociedad tanto nacional como global, que afecta al ser humano como un ser multidimensional que está en constante búsqueda de identidad y de felicidad en su cotidianidad, es necesario plantear espacios en el ámbito Educativo para trascender y encontrar respuestas a preguntas existenciales para la realización plena en la construcción de proyectos de vida. Esta es una tarea que implica ser abordada desde los procesos de enseñanza aprendizaje, y dentro del currículo educativo costarricense, la disciplina de Educación Religiosa permite ser ese espacio de encuentro en donde la persona estudiante descubra que puede trascender y plantearse nuevos horizontes como un ser integral, potencializando su propia inteligencia.  El objetivo es analizar el desarrollo de la Inteligencia Espiritual en el nuevo paradigma de la Educación Religiosa en el Sistema Educativo Costarricense desde documentación existente y la opinión de expertos para una educación por competencias. Esto implica romper los paradigmas tradicionales e imaginarios en que se ha quedado dicha asignatura, y plantear el desarrollo de la IES como eje trasversal para la educación por competencias y de formación integral de la persona desde el paradigma nuevo que atraviesa la ERE.
Rethinking Orphanages: Drawing Inspiration from Cameroon’s Culture and Traditions
Authors: Ajua Dilane Rublex Djitchap , Edith Flaure Mipo Tchinkou , Charles Bwemba
Published: November 2024

This article explores the concept of rethinking orphanages in Cameroon, drawing inspiration from the country’s rich cultural and traditional practices, it argues that the current model of orphanages often falls short of providing a holistic and culturally appropriate environment for children. By examining Cameroonian cultural values and practices related to child-rearing, kinship, and community support, the article proposes alternative approaches to caring for orphaned and vulnerable children. These approaches emphasize community-based care, extended family involvement, and the preservation of cultural identity. The articles conclude by highlighting the potential benefits of such a paradigm shift for the well-being of children and the strengthening of Cameroonian communities.
Vocabulary Building through Language Games: A Study among Secondary ESL Students of Ak/Al-Irfan Ladies College, Pottuvil
Authors: Hoorul Firthouz Zainulabdeen
Published: November 2024

This research explores the role of language games as an educational tool in developing vocabulary acquisition among secondary ESL (English as a Second Language) learners at Ak/Al-Irfan Ladies College, Pottuvil. The main goal of this research is to identify whether the collaborative language games can enhance vocabulary acquisition when compared to conventional methods of teaching, such as memorization by repetition and textbook-based learning. A mixed method research design was used to collect data for this study which includes both qualitative and quantitative data. The quantitative data was gathered using the results of pre-tests and post-tests with the aim of assessing the learner’s vocabulary acquisition before and after the classroom instruction. On the other hand, the qualitative data include questionnaires, interviews and focus group discussion with students which aid in gathering valuable insights such as their viewpoints, attitudes and experiences in terms of incorporating language games in the classroom settings. According to the findings of the research, it is clear that incorporating language games in classroom settings has a very positive impact on students’ performances in terms of acquiring vocabulary. This particular group of students not only improved their vocabulary skills but also, they were more active than the other group students when it comes to classroom activities. On the other hand, the students who were taught vocabulary using the traditional teaching methods showed less engagement in classroom activities and they were only exposed to a limited acquisition of vocabulary due to the use of conventional teaching approach. The study suggests that language games foster a more interactive and enjoyable learning environment, which contributes to the students' long-term vocabulary retention. The element of fun and competition inherent in these games appears to stimulate students' interest in learning, reducing the monotony often associated with traditional methods. Consequently, the research concludes that incorporating language games into ESL instruction can offer significant pedagogical benefits, making it a viable and potentially superior alternative to conventional vocabulary teaching methods.
Anacardium Occidentale-Derived Nanoparticles as a Biocompatible Targeted Therapy for Breast Cancer Cells
Authors: Majumder Anirban , Das Chaudhuri Angsuman , Pattanayak Anupama , Manna Sounik , Maiti Choudhury Sujata
Published: November 2024

Breast cancer is a global health burden and therefore necessitates a continued exploration for new therapeutic mediators. In current scenario, nanotechnology has developed an interest in the application of nanoparticles in treating cancer. The need for new therapeutic agents against one of the global health burdens, breast cancer, is continuous. Nanoparticle application using nanotechnology for cancers has received increased interest in recent years. This review critically analyzes the bioactive compounds of Anacardium occidentale, commonly known as cashew, and their synthesized nanoparticles in relation to activities on cell lines responsible for breast cancer. These facts describe the phytochemical make-up of Anacardium occidentale's, approaches for nanoparticles synthesis, and their modes of action with respect to tumor cells; and implications for the elaboration of future approaches to the treatment of cancer.
Recent Changes in Income Tax and GST: Implications for Commerce
Authors: D Manjaiah
Published: November 2024

The landscape of taxation in India has undergone significant changes in recent years, particularly in the areas of Income Tax and Goods and Services Tax (GST). This paper examines the latest amendments in both these areas, focusing on their impact on businesses and commerce in India. The Income Tax reforms introduced in the Finance Act 2023 aim to simplify the tax structure and enhance compliance, while GST amendments focus on addressing loopholes and improving the efficiency of tax administration. This study explores these changes in detail, their expected effects on businesses, and the broader economic implications for the Indian commerce sector.
A Comparative Analysis of Attention Mechanism in RNN-LSTMs for Improved Image Captioning Performance
Authors: Mirza Mehwish , Talha Siddiqui Muhammad
Published: November 2024

Image captioning which links computer vision with NATURAL LANGUAGE PROCESSING is critical in providing descriptions for the image. The proposed solution in this research is a hierarchical attention model which includes use of CNN features on images and LSTM networks with attention mechanisms for generating captions. By utilizing both object level and image level features, our method enhances the quality and relevance of captions, enhancing the variability of the automated image description.
Analysis of Occupational Safety Risk Management in Crane Based Well Services Activities in Budi Field Oil Field
Authors: ADI Yesiawan , SETIAWAN Edi , RAMLI Soehatman
Published: November 2024

Crane Based Well Services (CBWS) is a new technology in oil well maintenance in the oil and gas world. Tately N.V. is one of the marginal oil and gas companies, has implemented several CBWS campaigns in their oil wells. This study examines how the analysis and management of occupational safety risks arising from these activities. In CBWS activities, there are several potential hazards in the stages of its activities, including the danger of gas coming out of the well, the danger of wild sprays, the danger of lifting tools failure, the danger of working at heights, the danger of high pressure release, the danger of pinch points, the danger of irregular material swings and the danger of crane legs collapsing. Activities with these potential hazards have a high to moderate risk of causing work accidents. To reduce the risk of accidents from CBWS activities, Tately N.V. has taken mitigation measures for each potential hazard identified. The results of the study showed that the mitigation measures were quite successful with a decrease in the risk assessment to light, so that activities can be carried out with the mitigation that has been carried out. This study shows that much simpler and more economical CBWS activities can be carried out safely and with zero accidents by implementing the recommended mitigation or prevention measures to reduce existing K3 risks.
Integrity as a Moderator of the Influence of the Internal Control System on Accounting Fraud
Authors: PUTRA I Gst. B. Ngr. P. , MAHARANI Ida Ayu Dinda Priyanka
Published: November 2024

Organizations in the financial sector, like the Village Credit Institution (LPD) in Bali, are highly prone to accounting fraud. Despite their importance, fraudulent actions by LPD managers are still common. To reduce fraud, an effective internal control system is essential. Motivated by inconsistent results in previous studies, this research introduces individual integrity as a moderating variable. The study focuses on LPDs in Badung Regency, using purposive sampling to select participants based on specific criteria. The criteria used as the basis for selecting sample members in this study were LPDs with healthy and fairly healthy categories, totaling 71 LPDs. Meanwhile, the respondents to the study in each LPD were the Head of LPD, LPD Treasurer and Credit Division, while the number of respondents was 213 research respondents. The data analysis technique in this study uses the structural equation modeling (SEM) method based on partial least square (PLS). The statistical test results obtained the results that the internal control system variable has a significant negative effect on the tendency of accounting fraud. While the individual integrity level variable strengthens the influence of the internal control system on the tendency of accounting fraud.
The Effect of Work-Life Balance and Workload on Employee Performance
Authors: MEZALUNA Mezaluna , JURANA Jurana , PATTAWE Abd. , LATIFA Latifa
Published: November 2024

Maintaining optimal Employee Performance relies heavily on Work-life Balance and reasonable Workload. An unbalanced Workload can hinder productivity, while a healthy Work-life Balance can encourage more effective and efficient performance. To assess how Employee Performance at BPJS Kesehatan Palu Branch Office is affected by Workload and Work-life Balance. This research uses quantitative methodology, by collecting data from 30 respondents through questionnaires and Google forms and then analyzed using WarpPLS 7.0. The results revealed that Employee Performance is significantly affected by the balance between Work-life Balance and Workload. By examining the impact of Workload and Work-life Balance simultaneously in the public service sector, this study offers a new perspective.
Prediction of Financial Distress by Zmijewski’s X-Score Model in Selected Indian Iron and Steel Companies
Authors: AZAM Arshe , SAFIUDDIN Syed Khaja
Published: November 2024

The study delves into the intricate realm of financial distress prediction within the Indian Iron and Steel sector, employing Zmijewski's X-Score Model. The analysis encompasses five prominent companies – Jayaswal Neco Industries Ltd., Incredible Industries Ltd., Sarda Energy & Minerals Ltd., Kritika Wires Ltd., and Hariom Pipe Industries Ltd. – over five years from 2018 to 2022. The research uncovers nuanced insights into the financial health of these companies. Jayaswal Neco Industries Ltd., Incredible Industries Ltd., and Kritika Wires Ltd. showcase stability or improvement, indicating lower risks of financial distress. Conversely, Sarda Energy & Minerals Ltd. faces heightened risk, notably in 2022, while Hariom Pipe Industries Ltd. consistently exhibits financial vulnerability, worsening in the same year. The study employs robust statistical analyses, including multivariate tests and between-model effects analysis, revealing that specific financial ratios significantly impact Kritika Wires Ltd.'s stability. However, the complexity of financial distress becomes evident as other companies do not show significant impacts, underscoring the necessity for a nuanced understanding of diverse business dynamics. This research provides in-depth insights into financial distress prediction in the Indian Iron and Steel sector, offering valuable implications for industry practitioners and policymakers. By comprehending the complexities and adopting effective predictive models, companies can proactively manage risks, ensuring stability and contributing to overall economic growth.
Regional Economic Growth in Colombia: the role of Fiscal corruption and the Armed conﬂict
Authors: Herrera-Gómez Marcos , Ruano Sadit , Salvador Manuel
Published: November 2024

This research explores the impact of armed violence and corruption on the economic growth of Colombia’s departments from 1991 to 2017. Using models of spatial panels, statics and dynamics, we detect positive space-time indirect eﬀects on departmental growth, including evidence of beta-convergence. Speciﬁcally, ﬁscal corruption exhibited a signiﬁcant negative impact on short-term economic growth. Moreover, corruption primarily aﬀected growth at the local level, with limited spillover eﬀects observed from neighboring regions. Interestingly, our analysis did not yield statistically signiﬁcant evidence regarding the impact of armed violence on economic growth.
Exploring Waveform Variations among Neutron Star Ray-tracing Codes for Complex Emission Geometries
Authors: Choudhury Devarshi , Watts Anna L. , Dittmann Alexander J. , Miller M. Coleman , Morsink Sharon M. , Salmi Tuomo , Vinciguerra Serena , Bogdanov Slavko , Guillot Sebastien , Wolff Michael T. , Arzoumanian Zaven
Published: November 2024

Pulse profile modeling (PPM), the technique used to infer mass, radius, and geometric parameters for rotation-powered millisecond pulsars using data from the Neutron Star Interior Composition Explorer (NICER), relies on relativistic ray-tracing of thermal X-ray photons from hot spots on the neutron star surface to the observer. To verify our ray-tracing codes we have in the past conducted cross tests for simple hot spot geometries, focusing primarily on the implementation of the spacetime model. In this paper, we present verification for test problems that explore the more complex hot spot geometries that are now being employed in the NICER PPM analyses. We conclude that the accuracy of our computed waveforms is in general sufficiently high for analyses of current NICER data sets. We have however identified some extreme configurations where extra care may be needed.
An Empirical Calibration of the Tip of the Red Giant Branch Distance Method in the Near Infrared. II. JWST NIRCam Wide Filters
Authors: Newman Max J. B. , McQuinn Kristen B. W. , Skillman Evan D. , Boyer Martha L. , Cohen Roger E. , Dolphin Andrew E. , Telford O. Grace
Published: November 2024

The tip of the red giant branch (TRGB) is a standardizable candle, identifiable as the discontinuity at the bright extreme of the red giant branch (RGB) stars in color–magnitude diagram space. The TRGB-based distance method has been used to measure distances to galaxies out to D ≤ 20 Mpc with the Hubble Space Telescope F814W filter, and is an important rung in the distance ladder to measure the Hubble constant, H
0. In the infrared (IR), the TRGB apparent magnitude ranges from 1–2 mag brighter than in the optical. Now with the James Webb Space Telescope (JWST), the feasible distance range of the TRGB method can reach ∼50 Mpc. However, the IR TRGB luminosity depends to varying degrees on stellar metallicity/age. Here we standardize the TRGB luminosity using stellar colors as a proxy for metallicity/age to derive color-based corrections for the JWST Near-Infrared Camera short-wavelength filters F090W, F115W, and F150W, and the long-wavelength filters F277W, F356W, and F444W. We provide recommended filters for distance measurements depending on the requisite precision. For science requiring high precision (≤1% in distance), we recommend measuring the TRGB in F090W versus F090W − F150W or F115W versus F115W − F277W with the caveat that even with JWST, long integration times will be necessary at farther distances. If lower precision (>1.5% in distance) can be tolerated, or if shorter integration times are desirable, we recommend measuring the TRGB in either F115W or F150W. We do not recommend F444W for precision TRGB measurements due to its lower angular resolution.
Detection of QPO Soft Lag during the Outburst of Swift J1727.8-1613: Estimation of Intrinsic Parameters from Spectral Study
Authors: Debnath Dipak , Nath Sujoy Kumar , Chatterjee Debjit , Chatterjee Kaushik , Chang Hsiang-Kuang
Published: November 2024

The recently discovered bright transient black hole candidate Swift J1727.8-1613 is studied in a broad energy range (0.5–79 keV) using combined NICER and NuSTAR data taken on 2023 August 29. A prominent type C quasiperiodic oscillation (QPO) at 0.89 ± 0.01 Hz with its harmonic was observed in NICER data of 0.5–10 keV. Interestingly, the harmonic becomes weaker in the lower energy bands (0.5–1 and 1–3 keV). We also report the first detection of a soft time lag of 0.014 ± 0.001 s at the QPO frequency between harder (3–10 keV) and softer (0.5–3 keV) band photons observed with the NICER/X-ray timing instrument. This indicates that the inclination of the accretion disk in the binary system might be high. From the detailed spectral analysis with the relxill reflection model, we found the disk inclination angle of the source to be ∼85°. We discuss how the accretion flow configuration inferred from spectral analysis can help us understand the origin of QPOs and soft lag in this source.
Modeling the Energy-dependent Broadband Variability in the Black Hole Transient GX 339–4 Using AstroSat and NICER
Authors: Tanenia Hitesh , Garg Akash , Misra Ranjeev , Sen Somasri
Published: November 2024

We present a spectro-timing analysis of the black hole X-ray transient GX 339–4 using simultaneous observations from AstroSat and the Neutron Star Interior Composition Explorer (NICER) during the 2021 outburst period. The combined spectrum obtained from NICER, Large Area X-ray Proportional Counter and SXT data is effectively described by a model comprising a thermal disk component, hard Comptonization component, and reflection component with an edge. Our analysis of the AstroSat and NICER spectra indicates the source to be in a low/hard state, with a photon index of ∼1.64. The power density spectra obtained from both AstroSat and NICER observations exhibit two prominent broad features at 0.22 Hz and 2.94 Hz. We generated energy-dependent time lag and fractional root mean square (frms) at both frequencies in a broad energy range of 0.5–30 keV and found the presence of hard lags along with a decrease in variability at higher energy levels. Additionally, we discovered that the correlated variations in accretion rate, inner disk radius, coronal heating rate, and the scattering fraction, along with a delay between them, can explain the observed frms and lag spectra for both features.
He-accreting Oxygen–Neon White Dwarfs and Accretion-induced Collapse Events
Authors: Zhang Zhengyang , Wu Chengyuan , Aryan Amar , Zha Shuai , Liu Dongdong , Wang Bo
Published: November 2024

It has been widely accepted that mass-accreting white dwarfs (WDs) are the progenitors of Type Ia supernovae (SNe) or electron-capture supernovae. Previous work has shown that the accretion rate could affect the elemental abundance on the outer layers of CO WDs, and therefore affect the observational characteristics after they exploded as SNe Ia. However, it has not been well studied how elemental abundance changes on the outer layers of He-accreting ONe WDs as they approach the Chandrasekhar mass limit. In this paper, we investigated the evolution of He-accreting ONe WDs with MESA. We found that a CO-rich mantle will accumulate beneath the He layers resulting from the He burning, after which the ignition of the CO-rich mantle could transform carbon into silicon (Si). The amount of Si produced by carbon burning is strongly anticorrelated with the accretion rate. As the ONe WD nearly approaches the Chandrasekhar mass limit (M
ch) through accretion, it is likely to undergo accretion-induced collapse, resulting in the formation of a neutron star.
Estimating Stellar Atmospheric Parameters and [α/Fe] for LAMOST O-M-type Stars Using a Spectral Emulator
Authors: Liang Jun-Chao , Luo A-Li , Li Yin-Bi , Ma Xiao-Xiao , Li Shuo , Ma Shu-Guo , Lu Hai-Ling , Zhang Yun-Jin , Du Bing , Kong Xiao
Published: November 2024

In this paper, we developed a spectral emulator based on the Mapping Nearby Galaxies at Apache Point Observatory Stellar Library (MaStar) and a grouping optimization strategy to estimate effective temperature (T
eff), surface gravity (log g), metallicity ([Fe/H]), and the abundance of alpha elements with respect to iron ([α/Fe]) for O-M-type stars within the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) low-resolution spectra. The primary aim is to use a rapid spectral-fitting method, specifically the spectral emulator with the grouping optimization strategy, to create a comprehensive catalog for stars of all types within LAMOST, addressing the shortcomings in parameter estimations for both cold and hot stars present in the official LAMOST AFGKM-type catalog. This effort is part of our series of studies dedicated to establishing an empirical spectral library for LAMOST. Experimental results demonstrate that our method is effectively applicable to parameter prediction for LAMOST, with the single-machine processing time within 70 hr. We observed that the internal error dispersions for T
eff, log g, [Fe/H], and [α/Fe] across different spectral types lie within the ranges of 15–594 K, 0.03–0.27 dex, 0.02–0.10 dex, and 0.01–0.04 dex, respectively, indicating a good consistency. A comparative analysis with external data highlighted deficiencies in the official LAMOST catalog and issues with MaStar parameters, as well as potential limitations of our method in processing spectra with strong emission lines and bad pixels. The derived atmospheric parameters as a part of this work are available via doi:10.12149/101402.
Triggering the Untriggered: The First Einstein Probe-detected Gamma-Ray Burst 240219A and Its Implications
Authors: Yin Yi-Han Iris , Zhang Bin-Bin , Yang Jun , Sun Hui , Zhang Chen , Shao Yi-Xuan , Hu You-Dong , Zhu Zi-Pei , Xu Dong , An Li , Gao He , Wu Xue-Feng , Zhang Bing , Castro-Tirado Alberto Javier , Pandey Shashi B. , Rau Arne , Lei Weihua , Xie Wei , Ghirlanda Giancarlo , Piro Luigi , O’Brien Paul , Troja Eleonora , Jonker Peter , Yu Yun-Wei , An Jie , Chen Run-Chao , Chen Yi-Jing , Dong Xiao-Fei , Eyles-Ferris Rob , Fan Zhou , Fu Shao-Yu , Fynbo Johan P. U. , Gao Xing , Huang Yong-Feng , Jiang Shuai-Qing , Jiang Ya-Hui , Julakanti Yashaswi , Kuulkers Erik , Lao Qing-Hui , Li Dongyue , Ling Zhi-Xing , Liu Xing , Liu Yuan , Mou Jia-Yu , Pan Xin , Wei Daming , Wu Qinyu , Yadav Muskan , Yang Yu-Han , Yuan Weimin , Zhang Shuang-Nan
Published: November 2024

The Einstein Probe (EP) achieved its first detection and localization of a bright X-ray flare, EP240219a, on 2024 February 19, during its commissioning phase. Subsequent targeted searches triggered by the EP240219a alert identified a faint, untriggered gamma-ray burst (GRB) in the archived data of Fermi Gamma-ray Burst Monitor (GBM), Swift Burst Alert Telescope (BAT), and Insight-HXMT/HE. The EP Wide-field X-ray Telescope (WXT) light curve reveals a long duration of approximately 160 s with a slow decay, whereas the Fermi/GBM light curve shows a total duration of approximately 70 s. The peak in the Fermi/GBM light curve occurs slightly later with respect to the peak seen in the EP/WXT light curve. Our spectral analysis shows that a single cutoff power-law (PL) model effectively describes the joint EP/WXT–Fermi/GBM spectra in general, indicating coherent broad emission typical of GRBs. The model yielded a photon index of ∼–1.70 ± 0.05 and a peak energy of ∼257 ± 134 keV. After detection of GRB 240219A, long-term observations identified several candidates in optical and radio wavelengths, none of which was confirmed as the afterglow counterpart during subsequent optical and near-infrared follow-ups. The analysis of GRB 240219A classifies it as an X-ray-rich GRB (XRR) with a high peak energy, presenting both challenges and opportunities for studying the physical origins of X-ray flashes, XRRs, and classical GRBs. Furthermore, linking the cutoff PL component to nonthermal synchrotron radiation suggests that the burst is driven by a Poynting flux-dominated outflow.
Effects of Dust Coagulation on Streaming Instability
Authors: Ho Ka Wai , Li Hui , Li Shengtai
Published: November 2024

Streaming instability (SI) in dust has long been thought to be a promising process in triggering planetesimal formation in the protoplanetary disks (PPDs). In this study, we present the first numerical investigation that models the SI in the vertically stratified disk together with the dust coagulation process. Our simulations reveal that, even with the initially small dust sizes, because dust coagulation promotes dust size growth, SI can eventually still be triggered. Specifically, dust coagulation, limited only by dust fragmentation, broadens the parameter boundaries obtained from previous SI studies using single dust species. We describe the various stages of dust dynamics along with their size evolution and explore the impact of different dust fragmentation velocities. Implications of these results for realistic PPDs are also discussed.
ALMA Observations of Proper Motions of the Dust Clumps in the Protoplanetary Disk MWC 758
Authors: Kuo I-Hsuan Genevieve , Yen Hsi-Wei , Gu Pin-Gao
Published: November 2024

To study the dust dynamics in the dust-trapping vortices in the protoplanetary disk around MWC 758, we analyzed the 1.3 mm continuum images of the MWC 758 disk obtained with the Atacama Large Millimeter/submillimeter Array in 2017 and 2021. We detect proper motions of 22 mas and 24 mas in the two dust clumps at radii of 0.″32 and 0.″54 in the disk on the plane of the sky, respectively. On the assumption that the dust clumps are located in the disk midplane, the velocities of the observed proper motions along the azimuthal direction of the inner and outer dust clumps are sub- and super-Keplerian, respectively, and both have angular velocities corresponding to the Keplerian angular velocity at a radius of 0.″46 ± 0.″04. This deviation from the Keplerian motion is not expected in the conventional theory of vortices formed by the Rossby wave instability. The observed non-Keplerian proper motions of the dust clumps are unlikely due to the disk warp and eccentricity, nor are they associated with any predicted planets. The two dust clumps are likely spatially coincident with the infrared spirals. In addition, we detect the changes in the intensity profiles of the dust clumps over the 4 yr span. Therefore, we suggest that the observed proper motions are possibly due to changes in the density distributions in the dust clumps caused by their interaction with the spirals in the disk.
Determination of the Abundance of Mercury from the Hg ii Line at 5677.10 Å in Late B-type Stars. IX. HD 27295 (53 Tau)
Authors: Monier Richard
Published: November 2024

The line of Hg ii located at 5677.10 Å and the commonly used line at 3983.93 Å are not detected in UVES and ELODIE spectra of 53 Tau. The synthesis of selected lines of twenty chemical elements yields new abundance determinations for this sharp-lined star. Helium, carbon, oxygen, magnesium, aluminum, silicon, sulfur, scandium and iron are underabundant. Sodium has a solar abundance while phosphorus, calcium, titanium, chromium, manganese, strontium, ytrium, zirconium, xenon and barium are overabundant. The abundance excesses/deficiencies agree with previous determinations for aluminum, chromium, manganese, iron and strontium.
No Missing Flare in OJ 287
Authors: Valtonen Mauri J.
Published: November 2024

The quasar OJ 287 has shown large flares since 1888, following a pattern that arises in a supermassive black hole binary when the secondary hits the accretion disk of the primary, and releases a hot bubble of gas at every disk crossing. A complete mathematical solution of the flare sequence produced a list of future flares, the latest happening in the summer of 2022. Here I look into the origin of the idea that the lack of seeing the 2022 flare is a theoretical problem. During the summer OJ 287 cannot be observed by ground-based optical telescopes. In a paper published in 2021, ahead of the 2022 observing campaign, this was clearly stated. The often repeated claim that there is a “missing flare problem,” is a misunderstanding, as no detection was possible with the current instrumentation.
ZoologyCon 2024 - Book of Abstracts
Authors: Popa Luis Ovidiu , Adam Costică , Bâlcu Maxim-Jean , Brezeanu Andreea Maria , Constantinescu Ioana Cristina , Farcaș Larisa Bianca , Krapal Ana-Maria , Motoc Rozalia Magda , Popa Alexandra , Popa Oana Paula , Purdescu Florentina , Stan Melania , Ștefan Andrei
Published: November 2024

The book contains the abstracts and program of the international zoological congress ZOOLOGYCON 2024, organized by the Grigore Antipa Museum and held in Bucharest, Romania from 6th to 9th November 2024.