bluuebunny/crossref_metadata_2025 huggingface dataset:
EXPLORING INTERNATIONAL UNIVERSITY BRANCHES IN UZBEKISTAN: OPPORTUNITIES, CHALLENGES AND IMPROVEMENT PATHWAYS
Authors:   The Dean of the humanitarian, education and social studies faculty, PhD, Associate Professor, Uzbekistan, Raximova Shaxlo Baxtiyarovna , Hasanova Mohira Salimjon qizi ,   Assistant, Tashkent institute of Management and Economics, Uzbekistan
Published: October 2024

International University Branch Campuses in Uzbekistan present significant opportunities for advancing the country’s higher education landscape. These institutions offer advanced educational quality through internationally recognized curricula and faculty., promote global recognition and mobility. However, they also face challenges. Issues include language proficiency among faculty and students, which impede a positive students experience. Varieties in English proficiency among students in the classroom settings hinder motivation for study and a successful academic performance. Addressing these challenges requires language support programs, prioritizing language proficiency language proficiency in faculty hiring and tailored admission requirements to align student abilities with academic demands. By tackling these challenges, IUBCs can maximize their positive impact on Uzbekistan’s higher education system and enhance education quality in these institutions.
The role of a tantalum interlayer in enhancing the properties of Fe3O4 thin films
Authors: Ngo Hai Dang , Truong Vo Doan Thanh , Le Van Qui , Pham Hoai Phuong , Pham Thi Kim Hang
Published: October 2024

High spin polarization and low resistivity of Fe3O4 at room temperature have been an appealing topic in spintronics with various promising applications. High-quality Fe3O4 thin films are a must to achieve the goals. In this report, Fe3O4 films on different substrates (SiO2/Si(100), MgO(100), and MgO/Ta/SiO2/Si(100)) were fabricated at room temperature with radio-frequency (RF) sputtering and annealed at 450 °C for 2 h. The morphological, structural, and magnetic properties of the deposited samples were characterized with atomic force microscopy, X-ray diffractometry, and vibrating sample magnetometry. The polycrystalline Fe3O4 film grown on MgO/Ta/SiO2/Si(100) presented very interesting morphology and structure characteristics. More importantly, changes in grain size and structure due to the effect of the MgO/Ta buffering layers have a strong impact on saturation magnetization and coercivity of Fe3O4 thin films compared to cases of no or just a single buffering layer.
The Contribution of Technological Innovations to Enhance Education for Sustainable Development
Authors: Alzankawi Maisoun
Published: October 2024

Technological innovations have revolutionized numerous sectors, including education, by providing new tools and methodologies that enhance learning experiences and outcomes. Governments worldwide made teaching and learning educational technology compulsory during the COVID-19 pandemic in all educational fields. Despite the numerous advantages, integrating technological innovations into the educational process is challenging. There remains a significant gap between the potential of these technologies and their actual implementation in classrooms and educational fields. Issues such as inadequate infrastructure, lack of teacher training, and resistance to change hinder the effective use of technology in education. Moreover, the rapid movement of technological advancements often exceeds the ability of educational institutions to adapt, leading to underutilization of available resources and missed opportunities for enhancing the educational process. While there is a growing body of literature on the subject, much of the existing research is fragmented and lacks a comprehensive framework that connects theory with practice. This study employs qualitative analysis to obtain information about the experiences, benefits, and discusses the challenges that may arise using educational advancements and techniques in language learning. It aims to provide teachers and educators with a better understanding of the impacts of using technology in the educational process and the development of language learning. In the paper, the researcher defines technology, in addition to Information Communication Technology (ICT), and reviews previous studies on the effective use of technological tools across educational settings. Furthermore, the study sheds light on the role of using modern technological innovations that can be effectively utilized and integrated into education, not only for learners but also for their instructors who need to achieve professional development, by increasing the engagement of using technology in educational settings, motivation, as well as improving accessibility and convenience.
Vólvulo Gástrico en un Paciente Pediátrico: Reporte de Caso, Desafíos en el Manejo y Revisión de la Literatura
Authors: Castro Cruz Antonio , Aguirre López Jesús Roberto , Morales Velázquez José Emilio , Alarcón Morales Hugo Bernabé , López Santos Héctor Alfonso
Published: October 2024

El vólvulo gástrico en Pediatría es una emergencia quirúrgica rara pero grave, caracterizada por la torsión del estómago. Su presentación clínica incluye dolor abdominal y vómitos, lo que dificulta su diagnóstico temprano. La identificación rápida y el manejo adecuado son esenciales para prevenir complicaciones graves y mejorar los resultados en pacientes pediátricos. Este caso clínico muestra a femenino de 4 años, previamente sana, presentó un cuadro clínico de dolor abdominal insidioso en epigastrio, desencadenado por la ingesta de alimentos, seguido de vómitos progresivos e intolerancia de la vía oral. La exploración reveló distensión abdominal, palidez, deshidratación y signos de choque. Estudios paraclínicos mostraron anemia microcítica hipocrómica, lesión renal aguda estadio 2 (KDIGO), y acidosis metabólica con hiperlactatemia. La radiografía indicó oclusión intestinal mecánica, y la cirugía evidencio vólvulo gástrico órgano-axial y perforación gástrica a la manipulación, por lo que se realizó una gastroplastia, observándose áreas de necrosis con mejoría parcial tras la desvolvulación y por condiciones del tejido gástrico se decidió un "second look" a las 72 horas, se observó mejoría en la perfusión gástrica, se realizó una gastropexia en tres puntos y se colocó una gastrostomía protectora. Su posoperatorio fue satisfactorio y egreso del servicio. Actualmente con buena evolución a 1 año de seguimiento. Concluyendo que el vólvulo gástrico en pediatría es una condición clínica poco común pero potencialmente seria que presenta desafíos diagnósticos y terapéuticos significativos.
Propiedades Bromatológicas de los Frutos de Vasconcellea pulchra y Vasconcellea x heilbornii, Bolívar – Ecuador
Authors: Tirado Valladares Blanca Germania , Cobá Santamaría Pablo Vladimir
Published: October 2024

Vasconcellea pulchra  y Vasconcellea x heilbornii son arbustos y arbolitos respectivamente, endémicos y nativos del sur del Ecuador que crecen a una altura entre los 1986 msnm y 2336 msnm. Se encuentran en las provincias de Loja,  Bolívar y Pichincha, conocidos comúnmente como sacha col y chamburo. Se analizó los componentes nutrimentales de los frutos maduros mediante el análisis proximal. Colectados en la finca Masabanda, perteneciente comunidad Tres Marías en la  provincia de Bolívar. Se llevó a cabo el proceso de identificación científica de manera técnica determinando el perfil nutrimental y mineral en los frutos de V. obteniendo el siguiente detalle:  pulchra humedad 83,36%, cenizas 1,61%, proteína 0,19%, fibra 9,89%, pH 5,34%, pectina 0,1%, sólidos totales disueltos 4,5%, grasa 0,25%, carbohidratos totales, 4,69, fracción comestible 16.49%en  y para V. x heilbornii humedad 76,46%, cenizas 1,60%, proteína 0,25%, fibra 15,83%, pH 5,35%, pectina 0,038%, sólidos totales 4,5%, sólidos totales disueltos 4,67%, grasa 0,21%, carbohidratos totales 5,63%, fracción comestible 31.45 % y la presencia de  (Ca), (Mg), (Na), (Fe), (K), (Zn) (Cu) y (P).
Rasgos de la personalidad Prevalentes en Estudiantes del Tercer Curso de Colegios de Nivel Medio de Coronel Oviedo
Authors: Avalos Ferreira Celia Nemecia , González de Benítez Rosa Catalina , Iglesias Romero Natalia Mabel
Published: October 2024

En el presente trabajo se da a conocer los resultados de la   investigación diseñada por el Equipo Técnico de la Carrera de Psicología de la Universidad Católica “Nuestra Señora de la Asunción” del Campus Caaguazu en Coronel Oviedo y ejecutado con la participación de todos los docentes y estudiantes de la carrera, sobre los rasgos de la personalidad prevalentes en estudiantes del Tercer Curso de colegios públicos y privados de la zona urbana de Coronel Oviedo en el año 2023. El instrumento utilizado para la recolección de datos en esta investigación es el test NEO-FFI (NEO Five-Factor Inventory), creado por Paul T. Costa y Robert R. McCrae, publicado en 1991 en inglés y en 1.999 en el idioma español. Está basado en el modelo teórico que confirma a los siguientes cinco grados o estadios: Neuroticismo, Extraversión, Apertura, Amabilidad y Responsabilidad, como tendencias estables y consistentes de respuestas para evaluar el desarrollo de la personalidad tanto en situación clínica o en otro contexto. La investigación se ha llevado a cabo bajo una metodología exclusivamente cuantitativa y se consigue reconocer como rasgo prevalente el neuroticismo, asi como tambien el bajo desarrollo de los otros rasgos de la personalidad en la franja etaria estudiada. A partir de los resultados y la información precisa sobre el fenómenos estudiados, se ofrece una línea de acción a las comunidades educativas estudiadas durante el proceso de investigación consistente en talleres para el desarrollo de la personalidad de los adolescentes.
Oclusión y Perforación Intestinal Secundario a Tuberculosis Intestinal
Authors: Lopez Ruiz Sergio Abraham , Esquivel Treviño Reynaldo , García Bravo Said Audel
Published: October 2024

La tuberculosis es una enfermedad infecciosa prevenible y curable, causada por el microorgnanismo micobacterias tuberculosas. La prevalencia e incidencia es mayor en países en vías de desarrollo y afecta a todos los grupos etarios, sin embargo, tienen mayor incidencia en pacientes con inmunocompromiso, el principal tropismo en estas infecciones es el parénquima pulmonar, sin embargo, están descritas infecciones en muchos órganos y sistemas con menor incidencia. La tuberculosis abdominal muestra una incidencia aproximadamente del 5 % a nivel mundial, y de estas la afectacion intestinal es aproximadamente del 6-67%, las manifestaciones clinicas más comunes son dolor cronico, fiebre, perdida ponderal, sintomas relacionados con obstruccion intestinal, sudoraciones nocturnas, entre otros, sin embargo los sintomas pueden varias en relacion del sitio del tracto gastrointestinal afectado.Perforacion intestinal es una presentacion que ocurre en aproximadamente el 15% de los casos de tuberculosis intestinal, siendo la complicacion menos frecuente de esta localizacion y a su vez la más grave.Presentamos el caso de un paciente masculino de 66 años de edad sin enfermedades cronicas, ni antecedentes quirurgicos abdominales, el cual acude al servicio de urgencias por abdomen agudo, en una primera intervencion se realiza apendicectomia laparoscopica, y cierre primario de perforaciones en ileon, sin embargo cursa con evolucion torpida con datos de o luion intestinal en el postquirurgico, por lo cual se decide intervencion, encontrando dos anillos fibroticos en ileon distal, por lo cual se realiza reseccion y anastomosis, cursando con adecuada evolución postquirurgica, , el reporte histopatologico mostró datos compatibles con tuberculosis intestinal, por lo cual inicio manejo antifimico en su convalescencia
Capacidades de los desarrolladores de software en la implementación de nuevas tecnologías – Startups para el fortalecimiento de las PYMES
Authors: Mariel Silvero Fanny , González Jara Aurelia , Valenzuela Ortega Diego Fernando , Agüero Sanabria Silvio Salvador , Ramírez Núñez Diego Arnaldo
Published: October 2024

Los profesionales del desarrollo de software con un elevado dominio de las nuevas tecnologías están mejor capacitados para afrontar los desafíos y capitalizar las oportunidades en un mercado dinámico y en constante evolución. Mantenerse actualizado sobre las últimas tendencias tecnológicas y saber aplicarlas de manera eficaz puede impulsar la innovación, optimizar la eficiencia operativa y satisfacer las exigencias de un mercado cada vez más demandante. Por consiguiente, el propósito de esta investigación consistió en examinar las competencias de los expertos en tecnología de la información (TI) en el manejo de las nuevas tecnologías susceptibles de ser empleadas en el entorno de las startups tecnológicos de la Ciudad de Curuguaty durante el año 2022. El estudio adoptó un enfoque mixto (cuantitativo- cualitativo), de diseño no experimental y carácter descriptivo. Por un lado, se realizaron entrevistas semiestructuradas a veinticinco startups reconocidas en Paraguay, mientras que, por otro lado, se llevó a cabo una encuesta dirigida a treinta estudiantes y docentes de la Carrera de Análisis de Sistemas y de la Maestría en Informática Aplicada a la Ingeniería de Software. Se constató que el 64% de los startups participaron en el estudio, destacando principalmente aquellas categorizadas como PYMES y relacionadas con los sectores de comercio, automovilismo, electrónica y electrodomésticos, con una menor representación en áreas sociales e innovadoras. La totalidad de los docentes y estudiantes encuestados participaron en el estudio. Como conclusión, se determinó que las habilidades adquiridas y desarrolladas contribuyen al crecimiento de los startups. Entre las principales competencias identificadas se encuentran la responsabilidad y el trabajo en equipo, considerados pilares fundamentales para el logro de los objetivos empresariales. Los resultados obtenidos de las entrevistas realizadas a los startups y los docentes, en contraposición con las respuestas de los estudiantes en las encuestas, corroboran que estas habilidades son idóneas para el contexto de las startups.
Dificultades en el Aprendizaje de la Lectoescritura en Alumnos de 3° la Escuela Primaria”Cuauhtemoc” , X-Cabil , Quintana Roo
Authors: Chan Uh Lesly Elizabeth Chan Uh
Published: October 2024

El objetivo de esta investigación es analizar las principales dificultades que presentan los alumnos de 3 grado en la lectoescritura. La metodología implementada fue mixta, de manera cualitativa se recopiló información a través del test y encuesta en el cual se realizó preguntas a los alumnos sobre cuántos libros tenían en casa, cada cuando leen etc. Y de manera cuantitativa por los instrumentos ya mencionados que se aplicaron y a la misma vez se obtuvo información de forma independiente sobre los niveles de lectura y escritura en el que se encuentran los niños, por medio del análisis de las gráficas. No poder consolidar la lectoescritura, provoca en los alumnos dificultad al momento de expresarse, en su lenguaje, poco entusiasmo en querer aprender, falta de motivación por lo que, al realizar este trabajo, se busca plantear y crear estrategias para ayudar a los estudiantes a futuro, mejorar su proceso de enseñanza-aprendizaje sobre todo en el ámbito de lectura y escritura.
La Relación Entre Práctica Docente y Fracaso Escolar
Authors: Jerez Chicaiza Alexandra Elizabeth
Published: October 2024

El presente artículo trata sobre la relación entre la práctica docente y el fenómeno del fracaso escolar, con un enfoque específico en las instituciones educativas del Circuito Eloy Alfaro 05D01C07_12 en Latacunga, Ecuador. El objetivo de este estudio es analizar en profundidad cómo la práctica docente influye directamente en la incidencia del fracaso escolar, tomando en consideración factores esenciales como la competencia de los docentes, su nivel de motivación, la atención personalizada a los estudiantes y el apoyo integral proporcionado. Para llevar a cabo este artículo, se ha adoptado un enfoque metodológico basado en una revisión documental de corte cualitativo, descriptivo, no experimental. Como resultado se enfatiza una conexión intrínseca entre la práctica docente y el fenómeno del fracaso escolar. No obstante, se destaca que el fracaso escolar no es meramente atribuible a la práctica docente, ya que una práctica pedagógica idónea puede mitigar este problema al crear un entorno de aprendizaje inclusivo y adaptar las estrategias de enseñanza a las necesidades individuales de los estudiantes. Como conclusión, se hace hincapié en la importancia de una formación docente sólida y de una reflexión constante sobre la práctica para prevenir el fracaso escolar. La empatía y el compromiso de los docentes desempeñan un rol fundamental en el éxito académico y el bienestar general de los estudiantes. La práctica docente no solo incide en los resultados educativos, sino que un docente comprometido tiene el potencial de generar un impacto perdurable en el desarrollo y futuro éxito de los estudiantes
Análisis de la calidad en el servicio de Alimentos y Bebidas en la Plaza de Comidas Típicas de Archidona
Authors: Sarmiento León César Arturo
Published: October 2024

La presente investigación se llevó a cabo en la Plaza de Comidas Típicas de Archidona, ubicado en la cabecera cantonal de Archidona, perteneciente a la provincia de Napo.La finalidad es de analizar la percepción del cliente potencial que llega al lugar con el interés de degustar la comida tradicional amazónica que preparan todos los días en el sitio en mención. Para llevar a cabo el objetivo del estudio se diseñó una investigación con un enfoque cuantitativo de tipo transversal no experimental. A partir de ello, se recolectaron datos provenientes de la Plaza de Comidas Típicas de Archidona mediante la aplicación de una encuesta de satisfacción modelo SERVPERF a una muestra significativa de clientes que acuden al atractivo turístico para determinar el nivel de satisfacción de los clientes. Los resultados se determinaron por cada dimentión establecida (elementos tangibles, empatía, seguridad, capacidad de respuesta, fiabilidad); las dimensiones generales el promedio de media fue de 3,71±1,90 esto quiere decir que la dimensión capacidad de respuesta tiene mayor valoración 3,86, mientras que elemento tangible es la menor valorada con 3,63, además la calidad del servicio percibida por los clientes es evaluada como regular. Finalmente, se propone un conjunto de estrategias de mejora a través de varias acciones agrupadas en las buenas prácticas de manufactura, higiene personal de los empleados, calidad de servicios, así como estrategias de promoción y publicidad referentes a los locales que forman parte de la Plaza de Comidas Típicas.
Two in one: DNA taxonomy of Acronicta major complex (Lepidoptera: Noctuidae) reveals previous misidentifications and faunal connection in East Asia
Authors: Sohn Jae-Cheon , Tzuoo Han-Rong , Cho Soowon
Published: October 2024

The Korean populations of Acronicta major (Bremer, 1864) were reexamined with genital morphology and DNA barcodes. They were turned out to be a mixture of the true A. major and another species, Acronicta gigasa Chang, 1991. The alleged aberration of A. major, ab. anaedinella Strand, 1916, is associated with A. gigasa. The distributional range of A. gigasa is expanded to include Korea and southern China. A possible faunistic belt crossing Korea, southern China and Taiwan is discussed with exemplar lepidopterans. The divergence patterns of A. major and A. gigasa in East Asia are hinted by our estimation of their COI genetic distances. Our finding raises an issue of reconsideration in the hitherto-known information on the distribution, host-range and pest status of A. major in Korea.
Four new Afrotropical Hypotrabala from moist broadleaf forests and the first description of the female of H. obscura (Lepidoptera, Lasiocampidae, Lasiocampinae, Selenepherini)
Authors: Weber Patrick , Revay Edita E. , Verdecia Vanessa , Müller Günter C. , Prozorova Tatiana A. , Yakovlev Roman V. , Saldaitis Aidas , Volkova Julia S. , Prozorov Alexey M.
Published: October 2024

Four new species in the genus Hypotrabala Holland, 1893 are described: 1) Hypotrabala leopoldi sp. n. from the Democratic Republic of the Congo (DRC); 2) Hypotrabala benjamini sp. n. from DRC; 3) Hypotrabala carlottae sp. n. from Côte d’Ivoire and Ghana; and 4) Hypotrabala bettinae sp. n. from Nigeria. They are somewhat reminiscent of the dark colored Hypotrabala obscura Takano & László, 2024 known from the type series of four males originating from Gabon. The female of H. obscura and its genitalia are described for the first time; the species is recorded for the first time for Cameroon. Adults of both sexes, their genitalia, and map with collecting localities are illustrated.
O COMPORTAMENTO SUICIDA: REALIDADE EM GOIÁS
Authors: Silva Oliveira Eloisa Cristina , Santana Silva Priscilla
Published: October 2024

O presente trabalho apresenta a importância da análise dos fatores intrínsecos e extrínsecos que predispõem o suicídio, bem como retrata uma abordagem sobre a questão da sua prevenção. Nesse ínterim, o objetivo é perceber como a perspectiva dos direitos humanos pode alterar o discurso das pessoas que tentaram se suicidar. A fim de que esse estudo fosse efetivo o método selecionado foi o de pesquisa bibliográfica a qual teve como embasamento os efeitos do ato suicida na conjuntura hodierna e formas de precaver essa questão. O estudo é importante, visto que demonstrou o quanto é primordial a abordagem dessa problemática com o intuito de promover uma consciência coletiva em relação a esse assunto que assola tantas vidas. Além disso, faz-se necessário retratar o quanto a aplicação de políticas preventivas, como também um sistema de saúde, especificamente a inserção do tema nos cursos de graduação para que haja incentivo à qualidade de vida.
WIYN Open Cluster Study. XC. Radial-velocity Measurements and Spectroscopic Binary Orbits in the Open Cluster NGC 2506
Authors: Linck Evan , Mathieu Robert D. , Latham David W.
Published: October 2024

NGC 2506 is a rich, intermediate-age (2.0 Gyr), metal-poor ([Fe/H] ∼ −0.2) open cluster. This work presents the results of 12,157 spectroscopic radial-velocity measurements of 2442 stars in the NGC 2506 field obtained over 41 yr, made as part of the WIYN Open Cluster Study. Radial-velocity measurements are complete for the population of proper-motion member stars brighter than a Gaia G magnitude of 15.5, in which 320 proper-motion and radial-velocity cluster members were identified. Within the observation limit of G < 16.5, 469 proper-motion and radial-velocity members were identified. This work reports on the characteristics of NGC 2506, including projected spatial distribution, radial-velocity dispersion, and virial mass. This work also presents orbital solutions for 49 binary members with periods between 1 and 7580 days. NGC 2506 has an incompleteness-corrected binary frequency for binaries with periods less than 104 days of 35% ± 5%. This work also discusses in detail the 14 blue stragglers stars of NGC 2506—finding at least 64% ± 21% to be in binaries, five yellow straggler stars, and several other stars of note.
Gaseous Dynamical Friction on Elliptical Keplerian Orbits
Authors: O’Neill David , D’Orazio Daniel J. , Samsing Johan , Pessah Martin E.
Published: October 2024

We compute the gaseous dynamical friction force experienced by massive perturbers on elliptical Keplerian orbits. Using linear perturbation theory, we investigate the density wake morphology, dynamical friction force, and secular orbital evolution for massive single perturbers as well as equal-mass binaries embedded in a homogeneous, static medium. In all cases, the rate of change in the semimajor axis is found to be negative (as expected), whereas the rate of change in eccentricity is negative for strictly subsonic trajectories and positive for strictly supersonic trajectories. Transonic orbits can experience both positive and negative torques during the course of an orbit, with some growing in eccentricity and others circularizing. We observe all initial orbits becoming highly supersonic and eccentric (over sufficiently long timescales) due to a relentless semimajor axis decay increasing the Mach number and subsequent eccentricity driving. We compare our findings to previous studies for rectilinear and circular motion while also making our data for the evolution of Keplerian orbits available.
Machine-directed Gravitational-wave Counterpart Discovery
Authors: Sravan Niharika , Graham Matthew J. , Coughlin Michael W. , Ahumada Tomas , Anand Shreya
Published: October 2024

Joint observations in electromagnetic and gravitational waves shed light on the physics of objects and surrounding environments with extreme gravity that are otherwise unreachable via siloed observations in each messenger. However, such detections remain challenging due to the rapid and faint nature of counterparts. Protocols for discovery and inference still rely on human experts manually inspecting survey alert streams and intuiting optimal usage of limited follow-up resources. Strategizing an optimal follow-up program requires adaptive sequential decision-making given evolving light curve data that (i) maximizes a global objective despite incomplete information and (ii) is robust to stochasticity introduced by detectors/observing conditions. Reinforcement learning (RL) approaches allow agents to implicitly learn the physics or detector dynamics and the behavior policy that maximizes a designated objective through experience. To demonstrate the utility of such an approach for the kilonova follow-up problem, we train a toy RL agent with the goal of maximizing follow-up photometry for the true kilonova among several contaminant transient light curves. In a simulated environment where the agent learns online, it achieves 3× higher accuracy compared to a random strategy. However, it is surpassed by human agents by up to a factor of 2. This is likely because our hypothesis function (Q that is linear in state-action features) is an insufficient representation of the optimal behavior policy. More complex agents could perform at par or surpass human experts. Agents like these could pave the way for machine-directed software infrastructure to efficiently respond to next generation detectors, for conducting science inference and optimally planning expensive follow-up observations, scalably and with demonstrable performance guarantees.
Formation of Close-in Neptunes around Low-mass Stars through Breaking Resonant Chains
Authors: Liveoak Donald , Millholland Sarah C.
Published: October 2024

Conventional planet formation theories predict a paucity of massive planets around small stars, especially very low-mass (0.1−0.3 M
⊙) mid-to-late M dwarfs. Such tiny stars are expected to form planets of terrestrial sizes but not much bigger. However, this expectation is challenged by the recent discovery of LHS 3154 b, a planet with period of 3.7 days and minimum mass of 13.2 M
⊕ orbiting a 0.11 M
⊙ star. Here, we propose that close-in Neptune-mass planets like LHS 3154 b formed through an anomalous series of mergers from a primordial compact system of super-Earths. We perform simulations within the context of the “breaking the chains” scenario, in which super-Earths initially form in tightly spaced chains of mean-motion resonances before experiencing dynamical instabilities and collisions. Planets as massive and close-in as LHS 3154 b (M

p
∼ 12−20 M
⊕, P < 7 days) are produced in ∼1% of simulated systems, in broad agreement with their low observed occurrence. These results suggest that such planets do not require particularly unusual formation conditions but rather are an occasional by-product of a process that is already theorized to explain compact multiplanet systems. Interestingly, our simulated systems with LHS 3154 b-like planets also contain smaller planets at around ∼30 days, offering a possible test of this hypothesis.
The Accelerating Decline of the Mass Transfer Rate in the Recurrent Nova T Pyxidis*
Authors: Godon Patrick , Sion Edward M. , Williams Robert E. , Darnley Matthew J. , Sokoloski Jennifer L. , Lawrence Stephen S.
Published: October 2024

The recurrent nova T Pyxidis (T Pyx) has erupted six times since 1890, with its last outburst in 2011, and the relatively short recurrence time between classical nova explosions indicates that T Pyx must have a massive white dwarf (WD) accreting at a high rate. It is believed that, since its outburst in 1890, the mass transfer rate in T Pyx was very large due to a feedback loop where the secondary is heated by the hot WD. The feedback loop has been slowly shutting off, reducing the mass transfer rate, and thereby explaining the magnitude decline of T Pyx from ∼13.8 (before 1890) to 15.7 just before the 2011 eruption. We present an analysis of the latest Hubble Space Telescope far-ultraviolet and optical spectra, obtained 12 yr after the 2011 outburst, showing that the mass transfer rate has been steadily declining and is now below its preoutburst level by about 40%:

M

̇

∼
1
−
3
×

10

−
7

M

⊙

yr−1 for a WD mass of ∼1.0–1.4 M
⊙, an inclination of 50°–60°, reddening of E(B − V) = 0.30 ± 0.05, and a Gaia Data Release 3 distance of

2860

−
471

+
816

pc. This steady decrease in the mass transfer rate in the ∼decade after the 2011 outburst is in sharp contrast with the more constant preoutburst ultraviolet continuum flux level from archival International Ultraviolet Explorer spectra. The flux (i.e.,

M

̇

) decline rate is 29 times faster now in the last ∼decade than observed since 1890 to ∼2010. The feedback loop shut off seems to be accelerating, at least in the decade following its 2011 outburst. In all eventualities, our analysis confirms that T Pyx is going through an unusually peculiar short-lived phase.
Nearby Supernova and Cloud Crossing Effects on the Orbits of Small Bodies in the Solar System
Authors: Smith Leeanne , Miller Jesse A. , Fields Brian D.
Published: October 2024

Supernova (SN) blasts envelop many surrounding stellar systems, transferring kinetic energy to small bodies in the systems. Geologic evidence from 60Fe points to recent nearby SN activity within the past several Myr. Here, we model the transfer of energy and resulting orbital changes from these SN blasts to the Oort Cloud, the Kuiper Belt, and Saturn’s Phoebe ring. For the Oort Cloud, an impulse approximation shows that a 50 pc SN can eject approximately half of all objects less than 1 cm while altering the trajectories of larger ones, depending on their orbital parameters. For stars closest to SNe, objects up to ∼100 m can be ejected. Turning to the explored solar system, we find that SNe closer than 50 pc may affect Saturn’s Phoebe ring and can sweep away Kuiper Belt dust. It is also possible that the passage of the solar system through a dense interstellar cloud could have a similar effect; a numerical trajectory simulation shows that the location of the dust grains and the direction of the wind (from an SN or interstellar cloud) has a significant impact on whether or not the grains will become unbound from their orbit in the Kuiper Belt. Overall, nearby SNe sweep micron-sized dust from the solar system, though whether the grains are ultimately cast toward the Sun or altogether ejected depends on various factors. Evidence of SN-modified dust grain trajectories may be observed by New Horizons, though further modeling efforts are required.
First confirmed record of Bufo rubroventromaculatus Orlov, Ananjeva, Ermakov, Lukonina, Ninh & Nguyen, 2024 (Anura, Bufonidae) from China, with supplementary description of this species
Authors: Liu Shuo , Hou Mian , Mo Mingzhong , Rao Dingqi
Published: October 2024

Bufo rubroventromaculatus Orlov, Ananjeva, Ermakov, Lukonina, Ninh & Nguyen, 2024 is a species recently described from Vietnam. Currently, this species is known from central and northern Vietnam and it uncertain whether this species is distributed in China. In addition, the original description of this species is very brief.

Based on nine specimens collected from Yunnan Province and Guangxi Autonomous Region, China, we provide the first confirmed record of Bufo rubroventromaculatus from China. The morphological characteristics of the specimens from China mostly agree with the original description of B. rubroventromaculatus and, phylogenetically, the specimens from China clustered with the type series of B. rubroventromaculatus from Vietnam. We also provide a supplementary description of this species, based on the specimens we collected.
Studies on Neotropical Pseudophyllinae: Integrative description of Dentotibium gen. nov., and of a toothed foretibia katydid (Orthoptera: Tettigoniidae) that sings from burrows in branches
Authors: Cadena-Castañeda Oscar J. , Gomez-Morales Diego A. , Acevedo-Charry Orlando , Benavides-López Jose Luis
Published: October 2024

Herein, we describe the genus Dentotibiumgen. nov. and the species D. ramucantorissp. nov, a toothed foretibia katydid within the subfamily Pseudophyllinae from Colombia. This new katydid is a forest dweller inhabiting oak woodlands between 1600 and 2300 m above sea level, only found in the western slopes of the Eastern Andes of Boyacá Department, Colombia. This new species burrows in woody branches and shows big heads in both sexes. The appearance of Dentotibiumgen. nov. is similar to that of Trichotettix Stål, 1873 but differs in having tubercles over the dorsal margin of the foretibiae. It is also close to Nastonotus Bolívar, 1890, but differs from in lacking the three black stripes in the vertex and having a less marked frontal suture and smoother face. Males sing all night long, and their calling song consists of periodic syllables with three differentiable phases. Seasonal calling activity lowers remarkably during the dry season (Jun–Aug). DNA barcoding sequences for the paratypes made available in a previous study are included here.
Unveiling species diversity within early-diverging fungi from China I: three new species of Backusella (Backusellaceae, Mucoromycota)
Authors: Zhao Heng , Nie Yong , Huang Bo , Liu Xiao-Yong
Published: October 2024

The species diversity of early-diverging fungi has long lagged behind that of higher fungi, posing a significant obstacle to our comprehensive understanding of the fungal kingdom. Our ongoing research endeavors aim to address this gap by exploring the species diversity of early-diverging fungi in China. In this study, we describe three novel species within the Backusella, namely B. ellipticasp. nov., B. fujianensissp. nov., and B. variisporasp. nov., based on phylogenetic and morphological analyses. In the phylogenetic analysis of the ITS (internal transcribed spacer), LSU (large subunit of ribosomal RNA gene), and RPB1 (RNA polymerase II largest subunit gene) regions, the B. elliptica and B. fujianensis cluster closely with B. gigacellularis, B. ovalispora, and B. solicola, and the B. variispora is closely related to B. locustae and B. pernambucensis. Morphologically, B. elliptica is distinguished by elliptical sporangiospores, as well as cylindrical and hemispherical columellae. The B. fujianensis is characterized by elliptical sporangiospores, and various types of columellae such as hemispherical, subglobose, depressed globose and conical. The B. variispora is characterized by subglobose to globose sporangiospores, as well as hemispherical, subglobose to globose columellae. Additionally, the sporangiophores are long and monopodially branched in B. elliptica and B. fujianensis, while short and simple or sympodially branched in B. variispora. Physiologically, the maximum growth temperatures of B. elliptica (32 °C), B. fujianensis (35 °C), and B. variispora were (35 °C) were determined. With the inclusion of these newly described taxa, the total number of Backusella species known from China now stands at 12. Finally, we provide a key to facilitate the morphological identification of Backusella species from Asia.
The first recognition of the enigmatic fossil shark genus Megalolamna (Lamniformes, Otodontidae) from the lower Miocene of Europe and M. serotinus (Probst, 1879) as the newly designated type species for the genus
Authors: Pollerspöck Jürgen , Shimada Kenshu
Published: October 2024

Megalolamna is an elusive extinct shark genus (Lamniformes: Otodontidae) previously known from the upper Oligocene–Miocene of the USA, Colombia, Ecuador, Peru, and Japan. Here, we document the first occurrence of Megalolamna from Miocene marine deposits in Europe, specifically from Austria, France, Germany, and Italy. Although the taxon is regarded as a monospecific genus, this study reveals that the species name serotinus has the priority over any previously used names for the taxon and thus redescribes it as Megalolamna serotinus (Probst), comb. nov. This study is also significant because it demonstrates the existence of Megalolamna in the Mediterranean and Paratethys seas during the Miocene. Megalolamna inhabited the tropical–mid-latitudinal zones with spotty but wide geographic distribution.
L’action et l’aliénation des femmes selon Beauvoir
Authors: Malinge Yoann
Published: October 2024

Il s’agit dans cet article d’éclairer la méthode et la philosophie de Simone de Beauvoir pour comprendre l’aliénation et l’action des femmes. Dans un premier temps, l’article met au jour sa méthode généalogique pour comprendre comment « la femme » a pu être considérée comme « l’Autre » de l’homme. Puis, il s’agit de montrer comment Beauvoir déplace la thèse sartrienne de la liberté en situation pour critiquer l’aliénation et la domination subies par les femmes. Enfin, cet article étudie les solutions qu’elle propose pour la libération des femmes.
L’innovation à impact : symbole d’une nouvelle ère, mais pas celle que l’on pense
Authors: Rayna Thierry
Published: October 2024

S’interrogeant sur l’émergence récente et tardive du concept « d’innovation à impact », potentiellement tautologique (qui dit innovation, dit adoption, dit impact), et en lien avec des problèmes environnementaux et sociaux avérés depuis des décennies, et remarquant, d’autre part, l’apparition de multiples formes d’innovation (ouverte, participative, d’utilisateur, etc.) semblant déroger au paradigme dominant d’une innovation essentiellement portée par les grandes entreprises, cet article postule l’innovation à impact comme étant signe d’une mutation profonde du paradigme d’innovation, mais également du régime économique dans lequel il s’inscrit. Nourris par la numérisation, deux phénomènes conjoints de prosumérisation et de plateformisation sont porteurs d’une nouvelle ère au sein de laquelle le capital social, plutôt que financier, est la ressource clé, et l’innovation, devenue collective et distribuée, est le fait de parties prenantes multiples, dont nombre ne sont pas motivées par des considérations financières, mais par l’impact, faisant de l’innovation à impacts une absolue nécessité.Codes JEL : O30, P00, B50
L’homme Moïse , ou la place du « grand homme »… dans la formation du lien social
Authors: Giust-Desprairies Florence
Published: October 2024

Cet article est un retour sur le chapitre du livre De la horde à l’État consacré par Eugène Enriquez à l’ouvrage intitulé L’homme Moïse et la religion monothéiste écrit par Freud en 1939, la dernière année de sa vie. L’intérêt d’Eugène Enriquez porte à la fois sur la question du rôle du grand homme, sur le problème du renoncement aux instincts et du retour du refoulé, ainsi que sur l’essai d’application de la notion de période de latence aux problèmes historiques. Il s’agit de suivre avec Enriquez la manière dont il éclaire et prolonge les questions fondamentales posées par Freud sur la nature et les modalités du lien social en resituant les enjeux contextuels de l’écriture de Moïse .
Freud, Enriquez et la religion
Authors: Garcia de Araújo José Newton , Amado Gilles
Published: October 2024

Cet article explore et discute la réflexion d’Eugène Enriquez sur le texte de Freud L’avenir d’une illusion consacré à l’étude psychanalytique de la religion. Dans un premier temps, il reprend la pensée de Freud autour de la détresse infantile, de la névrose obsessionnelle et de l’illusion religieuse, contraire à l’esprit scientifique. Enriquez, très proche de la pensée de Freud, tient quand même à montrer le côté trop normatif et naïf de son propos. À la suite de ces réflexions, les auteurs choisissent de mettre l’accent sur le fanatisme religieux à travers de nombreuses références psychanalytiques et sociologiques et d’en évoquer l’actualité à partir de situations dramatiques, particulièrement en France et au Brésil, qui montrent, d’une façon indéniable, l’exploitation politique qui peut être faite du sentiment religieux.
Obsolescence… ou persistance de la forme-parti ?
Authors: Dézé Alexandre
Published: October 2024

Se faisant l’écho des discussions qui se sont tenues dans le cadre d’un atelier sur les partis à l’occasion du colloque des 40 ans du CEPEL, cet article revient sur la « panique » analytique suscitée par l’émergence simultanée et globalement couronnée de succès de nouvelles formations politiques en Europe, telles que Podemos en Espagne, La France Insoumise, La République en Marche en France ou encore le Mouvement 5 étoiles (M5S) en Italie. A rebours de la croyance selon laquelle ce phénomène marquerait la fin des partis traditionnels, cette contribution entend rappeler le caractère partiellement innovant des organisations qui ont vu le jour dernièrement mais également souligner les effets d’alignement partisan qu’elles ont pu connaître en s’institutionnalisant.
Les pratiques de la diplomatie française envers les Français de l’étranger
Authors: Lequesne Christian
Published: October 2024

Les États d’origine des émigrés utilisent leur diaspora comme instrument de leur diplomatie. En France, les 2,5 millions de Français vivant en dehors des frontières nationales sont suivis de près par l’État. Cette pratique de suivi est ancienne. Elle se traduit essentiellement par une politique consulaire généreuse qui exporte les politiques publiques au-delà du territoire, y compris celles qui caractérisent l’État providence comme les aides sociales ou la délivrance de bourses scolaires. Disposant d’une représentation propre au sein de l’Assemblée nationale et du Sénat, les Français de l’étranger agissent comme un groupe d’intérêt qui rappelle à leur État d’origine ses obligations. L’État a, en revanche, plus de mal à mobiliser la diaspora française dans l’exercice de sa diplomatie d’influence .
Development and application of machine learning models in US consumer price index forecasting: Analysis of a hybrid approach
Authors: Gur Yunus Emre
Published: October 2024

This study aims to apply advanced machine-learning models and hybrid approaches to improve the forecasting accuracy of the US Consumer Price Index (CPI). The study examined the performance of LSTM, MARS, XGBoost, LSTM-MARS, and LSTM-XGBoost models using a large time-series data from January 1974 to October 2023. The data were combined with key economic indicators of the US, and the hyperparameters of the forecasting models were optimized using genetic algorithm and Bayesian optimization methods. According to the VAR model results, variables such as past values of CPI, oil prices (OP), and gross domestic product (GDP) have strong and significant effects on CPI. In particular, the LSTM-XGBoost model provided superior accuracy in CPI forecasts compared with other models and was found to perform the best by establishing strong relationships with variables such as the federal funds rate (FFER) and GDP. These results suggest that hybrid approaches can significantly improve economic forecasts and provide valuable insights for policymakers, investors, and market analysts.
El conjunto megalítico de Las Sileras (Córdoba) Una aproximación multiescala y digital a un rompecabezas grabado en piedra
Authors: Martínez Sánchez Rafael M. , Maldonado Ruiz Alexis , Vera-Rodríguez J. Carlos , Bretones García M. Dolores , Balbín Behrmann Rodrigo , Bueno Ramírez Primitiva
Published: October 2024

Presentamos la documentación y estudio del denominado Dolmen de arroyo de las Sileras publicado en la década de 1930 y posteriormente desaparecido. Descrito inicialmente como un conjunto compuesto por fragmentos de ortostatos con grabados de espirales y círculos concéntricos, se presentó como un unicum en el contexto del sur de Iberia. Su ‘redescubrimiento’ nos ha permitido desarrollar una prospección arqueológica pedestre, dibujo arqueológico convencional, fotogrametría, anastilosis digital y análisis morfológico virtual. Los resultados aportan datos inéditos sobre los soportes grabados para discutir la interpretación del sitio. La prospección ha revelado concentraciones próximas de restos cerámicos datables entre el Neolítico Antiguo y el inicio de la Edad del Cobre. En conjunto, los soportes grabados de las Sileras se integran en un paisaje cultural más rico y complejo de lo esperable en el Guadalquivir Medio durante la Prehistoria Reciente.
Research on Blended Teaching of College English Writing Based on 'POA' Theory Under the Background of Big Data
Authors: Zhao Ping , Lv Baojun , Gao Jiansheng , Jiao Fengming , Sun Chunling , Guo Lan , Zhao Xin
Published: October 2024

This paper discusses the application value of the writing teaching mode combined with the mixed teaching mode in college English writing teaching against the background of big data. Focusing on production-oriented approach (POA) theory, this paper proposes a mixed learning writing model for English teaching and applies the POA mixed learning English writing teaching model to practical teaching by using the cloud classroom platform, collecting students' big data, and analyzing students' seriousness, classroom participation, satisfaction, and English writing performance. Although the overall student engagement is not high, their classroom satisfaction is very high. Research shows that after the teacher adjusted the lesson plan and encouraged students to participate more in class interactions, their scores improved in the second exam but declined in the third exam . The levels of engagement, participation, and satisfaction have significantly decreased across all grades. The POA combined with the blended learning mode has a great application value in practical teaching in the era of big data.
A Visualized Exploration of Educational Robotics Over Five Decades
Authors: Dou Anqi , Xu Wei , Feng Yu
Published: October 2024

With the swift development of information technologies, educational robotics has been widely used in education, generally leading to improved educational outcomes. While educational robotics has gained popularity and achieved success in education, few researchers have conducted bibliographic analyses in this field. This study complements this missing link by visualizing the top ten authors, organizations, countries, keywords, authors, and sources via VOSviewer. The clustering techniques in CitNetExplorer were used to cluster the publications, where citation networks and qualitative analyses were developed to discuss the topics including the learning outcomes, social and interactive skills, working memory, and higher-order skills in the educational robotics-based context. This study concludes that effective educational robotics can exert a positive influence on the learning outcomes and robotics can improve the development of proximal zones in human brains, conducive to the learning outcomes. Future researchers may focus their attention on robotic competitions, affective features, and evaluative and analytical frameworks to improve educational robotics-based educational effectiveness.