bluuebunny/crossref_metadata_2025 huggingface dataset:
WAYS TO REDUCE THE IMPACT OF PULSATIONS IN LOCAL POWER SUPPLY ROBOTIC SYSTEMS
Authors: Skuhariev V. , Svitak O. , Yasko V.
Published: April 2024

An analysis of the changes in the flow of pulsation transforming the energy-dynamic indicators of on-board power electronics systems has shown that there are several options for solving this problem.

The article outlines the main options for the current problem of pulsation in the energy systems of autonomous electrical systems, such as UAVs, robotic complexes, and other systems. The effectiveness of changes in pulsation is examined, in addition to directly assessing the effectiveness of stagnation strategies and methods. Also in the statistics, the optimal technical solutions for specific operating minds were identified.

The prospects and future directives have been predicted based on the proposals for further research in the sphere of changes in pulsation in local life systems.

In the future, it is predicted and supported by the development of technology and innovation in this country.

To sum up, we can say that the statistics have analyzed the changes in pulsation in robotic local power supply systems, which is one of the key directions in the field of electrical engineering and electronics. Increased attention to this problem is due to the need for assured stability, reliability and greater energy efficiency of electronic systems. Research in this area is aimed at developing more comprehensive methods and strategies for reducing noise and pulsation in electrical systems.

Assessing the effectiveness of stagnant methods, promoting the development of new technologies and innovation, as well as developing promising directions in this field opens the way to creating more stable and adaptive living systems. Replacement of advanced electronic filters, voltage stabilizers, selection of new materials and components, integration of intelligent energy management systems and optimization of essential energy resources local power supply systems – the whole purpose is to directly conduct further investigations.

The growing demand for stable and efficient electronic systems is driven by current research and the introduction of new technologies to change pulsation. Technological developments and scientific research in this area open up broad prospects for reducing the power supply and ensuring the stability of the functioning of modern electronic devices.
Bisexuality or Heterocurious: A Challenge for Sexual Education
Authors: Palafox Luis Antonio Rivera , Soto Juan Manuel Sánchez , Martin Anabelem Soberanes , Martínez Magally Reyes
Published: April 2024

In this research work, the situation experienced by married men with children who begin their bisexuality is analyzed through a case study, through a semi-structured interview with a 36-year-old man, in order to determine the factors that guide people to have sexual relations with other men, in secret, and the role that sexual education plays. Based on the information collected in the interview, it can be analyzed that even though we live in the 21st century, there are still many myths and paradigms about homosexual and bisexual people, due to the form of education, customs, religion and traditions that are transmitted from parents to children. On the other hand, talking about sexuality is a topic full of taboos, which prevents people from openly expressing their sexual desires and experiences, due to fear of being rejected and judged, due to the moral norms established in a society. For this reason, some married men maintain a secret erotic relationship with other men. In our case study, the subject's first experience was under the influence of alcohol consumption, later manifesting the guilt syndrome. Religion is also a key piece in our study, because they live as heterosexual people, because custom and what dictates that a man must be with his woman, however, sexually they do not feel satisfied or have other fantasies that they cannot fulfill your partner, seeking that satisfaction in men with particular characteristics, such as: age, physical build, behavior, appearance, among other aspects. Eradicating discrimination and rejection towards bisexual people is not only a social problem but also a health problem. It is important to correctly educate the population regarding sexuality, seeing it not only from the reproductive side but also from all its other characteristics.
Trastorno Depresivo y Ansiedad asociados a Descontrol Glucémico en Pacientes con DM2 de 18 a 59 Años de Edad de la Unidad de Medicina Familiar 57
Authors: Rico Rojas Alejandra , Ugalde Ramírez Irlanda Alicia
Published: April 2024

La siguiente investigación pretende determinar la asociación del trastorno depresivo y ansiedad con el descontrol glucémico en pacientes con DM2 de 18 a 59 años de edad en la Unidad de Medicina Familiar 57. Se realizó un estudio con enfoque analítico, observacional, ambispectivo, longitudinal, muestreo probabilístico por conveniencia en la Unidad de Medicina Familiar No. 57 en Irapuato, Guanajuato durante el periodo de diciembre del año 2022 a julio del año 2023, la cual cuenta con 2547 pacientes con DM2 entre los 18 a 59 años de edad que cumplieron con los criterios de inclusión, de los cuales solo se estudiaron 242 pacientes, los cuales se dividieron en 2 grupos; uno con 121 pacientes con DM 2 descontrolados y otro de 121 pacientes con DM 2 en control. De acuerdo con el test de Beck de depresión y ansiedad, se observó que los pacientes con descontrol presentaron un número mayor de casos de depresión moderada y grave con 40.5% en comparación con los de buen control con 5.8%, y de igual forma se observó que los pacientes con ansiedad moderada con un 28.1% en pacientes en descontrol en comparación con los de buen control con 1.7%, dando así un grado de significancia importante para la asociación de trastorno depresivo y  ansiedad con descontrol glucémico.
Desarrollo y Validación de una Escala de Espiritualidad para uso en Servicios de Salud Mental
Authors: García Granada Juan Manuel , Castaño Ramirez Oscar Mauricio
Published: April 2024

Introducción: Recientemente se ha incrementado la evaluación de la espiritualidad en los pacientes como parte esencial de un cuidado integral, sin embargo, las definiciones y los instrumentos que intentan medir la espiritualidad son heterogéneos.  Objetivo: el estudio busco desarrollar un concepto y un instrumento de medición de espiritualidad para el servicio de orientación espiritual de la Orden Hospitalaria San Juan de Dios en Latinoamérica.  Metodología: Esta investigación utilizó elementos cuantitativos y cualitativos para la delimitación de constructos y creación de ítems. Se realizó una validez de apariencia y contenido de la escala, análisis de los ítems y análisis factorial confirmatorio. El análisis fue realizado con el lenguaje de programación R. Resultados: El estudio permitió la creación de una definición de la espiritualidad y una escala unidimensional de 7 ítems. El Alpha de Cronbach de la escala fue de 0.96 y el Omega de Mc Donald 0.89. El factor 1 explico el 84% de la varianza y se encontraron correlaciones entre los ítems de 0.7 y 0.8.  Conclusiones: Se creo la definición de espiritualidad para la Orden hospitalaria San Juan de Dios Latinoamérica. La escala diseñada es un instrumento válido y confiable que puede ser utilizado en los servicios de orientación espiritual.
Técnicas para Promover la Comunicación Asertiva y Fortalecer las Relaciones Interpersonales en el Entorno Educativo: Un Enfoque Integral en el Instituto Universitario del Centro de México
Authors: Villegas Gómez Marcela Hilda , Estrada García Erika Darzee
Published: April 2024

El estudio se centra en mejorar la comunicación en el Instituto Universitario del Centro de México, sede Córdoba, Veracruz, mediante el fomento de relaciones interpersonales positivas entre alumnos, docentes y autoridades. Se empleó un diseño no experimental que combinó enfoques cuantitativos y cualitativos, con una muestra probabilística estratificada. Se utilizaron técnicas de investigación como observación, entrevistas y encuestas. Los resultados, analizados mediante tablas y gráficos, destacan la necesidad de promover la comunicación asertiva en el entorno educativo. Este enfoque integral busca fortalecer la cohesión y la colaboración dentro y fuera del plantel, impulsando conductas y valores positivos. Los hallazgos ofrecen una base empírica para la implementación de estrategias efectivas de comunicación, con el objetivo de mejorar el clima escolar y optimizar el proceso educativo.
Patología Oral en Niños: Condilomatosis Oral por HPV. Reporte de Caso
Authors: Sánchez León Sophia Anabella , Sisalima Morocho Ana Karina , Domínguez Fajardo Soraya Vanessa , Ordoñez Alvarado Grace Ghissel , Gutiérrez Capa Joao Antonio
Published: April 2024

Los virus del papiloma humano (VPH) son un grupo heterogéneo de virus cuyo genoma consta de ADN bicatenario con una cápside proteica. Son células epiteliales que infectan el estado basal del epitelio, manteniendo así la transcripción y replicación de su ADN a nivel basal, provocando papilomas hiperplásicos y lesiones verrugosas en piel y mucosas. 1 Hasta la fecha, se han identificado 100 especies de virus del papiloma humano (VPH). En la cavidad bucal, 24 tipos se asocian con lesiones benignas. Las verrugas genitales orales son causadas por el virus del papiloma humano (VPH), especialmente los tipos 6 y 11. Es una enfermedad de transmisión sexual que aparece más comúnmente como crecimientos rosados, de color moco, parecidos a una coliflor en áreas húmedas como los genitales, el recto y la boca. En la población pediátrica, las verrugas genitales son 11:2 más comunes en niñas que en niños, principalmente debido a antecedentes de posible abuso sexual. Se reporta un paciente femenina de 7 años, con evidencia de condiloma localizado en región izquierda lingual y borde lateral izquierdo de labio, aparénteme paciente sin signos de abuso sexual.
Carcinoma de Células de Merkel en Paciente Masculino de 60 Años. Reporte de Caso
Authors: Quezada Carrión Andrea Maribel , Ramírez Honores Jonathan Fernando , Pavon Gambarrotti Camila Nicoll , Castillo Santin Adriana Lucía , Saavedra Sarango Josselyne Adriana
Published: April 2024

El carcinoma de células de Merkel (CCM) es un tumor cutáneo muy agresivo que a menudo provoca recurrencia local y metástasis. Debido a la baja morbilidad y la mayor edad de los pacientes, no han sido posibles estudios comparativos sobre diferentes opciones de tratamiento en diferentes etapas de la enfermedad, y no existe consenso sobre las acciones terapéuticas a tomar. Se desconoce la patogénesis del CCM, pero la luz ultravioleta, la inmunosupresión y la presencia de poliomavirus en el genoma del tumor parecen jugar un papel importante en el desarrollo de este tumor. El diagnóstico patológico es difícil porque puede confundirse fácilmente con metástasis cutáneas de otros tumores: sarcoma de Ewing, tumores pulmonares de células pequeñas o neuroblastoma. Se reporta paciente masculino de 60 años presenta una tumoración de 12 meses de evolución y crecimiento progresivo en codo derecho. Se evidencia nódulo eritematoso, de aproximadamente 3x3 cm y de consistencia firme.
Anadolu Tarih Öncesi Dönemlerine Yeni Katkılar: İnhisar Gedikkaya Mağarası (MÖ 14500-4500)
Authors: Sarı Deniz
Published: April 2024

Gedikkaya Mağarası, Bilecik ili İnhisar ilçesinin yaklaşık 1 km güneydoğusunda, Gedikkaya Mevkii’nde yer alan Gedikkaya Nekropolü içerisinde bulunmaktadır. Mağara, Epi-paleolitik, Neolitik ve Kalkolitik olmak üzere üç farklı dönemde yerleşime sahne olmuştur. Bunun yanı sıra düzensiz bir şekilde Hellenistik Dönem’e ait az sayıda ele geçen malzeme; mağaranın yer aldığı kayalık tepenin eteklerinde yer alan yerleşim yerinin sakinlerinin zaman zaman belli amaçlarla mağarayı ziyaret ettiğine işaret etmektedir. Karbon 14 yaş tayini analizlerinin sonuçlarına göre mağarada bugüne dek bilinen ilk yerleşim Epi-paleolitik Dönem’e denk gelen MÖ 14500’lere aittir. Mağaranın iskân edildiği en geç tarih ise Orta Kalkolitik Dönem’e denk gelen MÖ 4500’lerdir. Mağaradaki Epi-paleolitik Dönem buluntuları Avrupa Üst Paleolitik Dönem kültür öğeleri ile Anadolu ve Doğu Akdeniz’in Çanak Çömleksiz Neolitik kültürleri arasında bağlantılar olduğunu düşündürmektedir. Neolitik Dönem sonuna ait bulgular burada kısa süreli bir yerleşime işaret etmektedir; söz konusu kontekstlere ait tarihler, 8.2 ka olarak bilinen iklim olayına ve küresel soğumanın zirve yaptığı sürece denk gelmektedir. Kalkolitik Dönem’in ilk yarısı Gedikkaya’da mimarisi ile daha uzun süreli fakat sezonluk iskânın olduğu bir zaman dilimidir. Neolitik ve Kalkolitik Dönem buluntuları şaşırtıcı bir şekilde Balkanlar, Kafkaslar, Akdeniz ve Güneydoğu Anadolu gibi uzak bölge kültürleriyle ortak öğeler içermektedir. Gedikkaya’daki iskân büyük oranda iklim olayları ile ilişkilendirilen ama yine de tam olarak kesinleşmemiş sebeplere bağlı “kültürel kırılmaların” olduğu dönemlere denk gelmektedir. Dolaysıyla barınma, yeni yer arayışı, güvenlik ve konaklama gibi çeşitli sebeplere bağlı bölgeler arası insan hareketliliğinin yaşandığı süreçlerde mağarada yerleşilmiştir.
PENINGKATAN PEMAHAMAN ANTI KORUPSI KEPALA DESA DI KECAMATAN BARAT KABUPATEN MAGETAN SEBAGAI UPAYA MEWUJUDKAN CLEAN GOVERNMENT
Authors: Mahardhika Vita , Astuti Pudji , Rusdiana Emmilia , Ahmad Gelar Ali , Hikmah Nurul
Published: April 2024

Kepala Desa sebagai lembaga pemerintah  terkecil diberikan kewenangan oleh pemerintah dalam mewujudkan otonomi desa salah satunya diwujudkan dengan pemberian kewenangan pembangunan secara lokal-partisipatif kepada desa. Namun dalam praktiknya, kewenangan yang telah diberikan tersebut justru dimanfaatkan oleh sebagian kepala desa untuk korupsi. Kesadaran tentang korupsi dan dampaknya yang menghambat pembangunan dan kesejahteraan masyarakat belum dirasakan oleh Kepala Desa dengan masih banyak Kepala Desa yang terjerat kasus korupsi. Atas permasalahan tersebut Tim Pengabdian Masyarakat Fakultas Ilmu Sosial Universitas Negeri Surabaya melakukan Upaya Pendidikan anti korupsi kepada pada Kepala Desa untuk memberikan pemahaman terhadap peraturan-peraturan tentang korupsi dan akibatnya. Hasil dari kegiatan ini sangat bermanfaat dan mampu memberikan pengetahuan lebih kepada Kepala Desa untuk lebih akuntabel dan transparan dalam membangun desa
Assessment of Learning Environment of Undergraduates in the Faculty of Engineering in Higher Institutions of Learning
Authors: O .O. Ayoola, , T. B Adeboje, , O.D. Olaniyan,
Published: April 2024

The review researched the learning climate of Designing understudies in higher foundation of learning in Nigeria. The motivation behind the review was to decide the accessibility and usefulness of educational assets for showing designing courses in schools. The concentrate likewise explored the impact of these assets on the scholarly execution of understudies as well as their pioneering abilities. The review embraced the unmistakable examination of an overview type. The example for the review comprised 200 college understudies chosen through the multistage testing method from chose higher establishments in SouthWest, Nigeria. Two exploration questions were raised and three speculations were created for the review. Information were investigated utilizing both illustrative and inferential measurements. The outcome from the understudies' reactions showed that educational assets were accessible yet not satisfactory, hence, the usefulness level is low. Nonetheless, the accessibility of educational assets and language of guidance doesn't impact the presentation of understudies or level of appreciation in the class.
Predictive Maintenance in Industrial Systems Using Machine Learning
Authors: Kumar Rishikant , Mishra Manmohan , Suman Suryali , Singh Bali Parabjot
Published: April 2024

Now, a lot of different areas need predictive maintenance (PdM). The goal is to cut down on downtime and make work go faster by finding out when things will break. This study looks at how machine learning can be used to figure out when to fix manufacturing systems. The study is all about using old business records, monitoring data, and upkeep records to make good prediction models. To make prediction tools that can quickly and accurately find places where industrial machinery might break down, we plan to carefully use advanced machine learning techniques such as supervised learning, time series analysis, and anomaly detection. Our idea could make it easier to stick to repair plans. Breakdowns would happen less often, and overall, running costs would go down in many fields. To prove that our expected method for maintenance works and can be used in the real world, we use careful case studies and thorough empirical validations. This research is a big step toward making models for planned maintenance, giving ways for proactive maintenance, and improving the dependability and efficiency of industrial systems in the real world.
Mathematics discourse in instruction during functions lessons in grade 10 rural classrooms
Authors: Mbhiza Hlamulo Wiseman , Sempe Matobako
Published: April 2024

Despite the global significance of functions in mathematics education, there has been limited research on how South African rural teachers address specific mathematical concepts related to functions. This qualitative multiple case study, conducted within a post-structural paradigm, delved into the discourses of Grade 10 teachers during functions lessons in rural classrooms. The study focused on the teaching of mathematical concepts related to functions and involved five mathematics teachers from rural school sites in Acornhoek, Mpumalanga Province, South Africa. These teachers were selected based on their experience in teaching mathematics. The research employed semi-structured interviews, unstructured classroom observations, and Video-Stimulated Recall Interviews with all five teachers. By narrowing the focus to one teacher's lesson, this paper analyses the presentation of functions concepts using the Mathematical Discourse in Instruction (MDI) framework. The study revealed that clear teaching materials and learner-engaging instructional methods enable meaningful engagement and concept internalisation. Through the visible use of the components of the MDI framework, the teacher successfully engaged learners, clarified misconceptions, and encouraged learners' participation, ultimately enhancing the coherence and understanding of mathematical concepts related to functions in the Grade 10 classroom.
Development beyond 2030: more collaboration, less competition?
Authors: Kumar Ankit , Butcher Stephanie , Hammett Daniel , Barragan-Contreras Sandra , Burns Vanessa , Chesworth Ollie , Cooper Gregory , Kanai Juan Miguel , Mottram Hannah , Poveda Sammia , Richardson Pamela
Published: April 2024

This article was published open access under a CC BY licence: https://creativecommons.org/licences/by/4.0/

The Sustainable Development Goals (SDGs) represented a key landmark in collaboration and shared agenda-setting to address global challenges across scales and geographies. However, despite initial optimism that measurable goals would support accountability and transparency in development, progress towards realising goals has been mixed. Global development agendas increasingly face challenges from the intensification of climate change, the return of populism and ethnonationalism, and a deepening of inequalities at intra- and inter-national scales.

This article interrogates the priorities that must inform a critical post-SDG development agenda. To think towards this, we first explore three questions of the development agenda: 1) can development be sustainable? 2) Can development be delivered through markets? And 3) can development be ‘global’? To address these tensions and take a first step towards a more critical post-2030 agenda, we call for a focus on spatialities, multiplicities and historicities of development.
TOWARDS A DIGITAL NATIVE ERA IN NUTRITION: INTRODUCING THE M-FORMAT LABELING
Authors: Bobe Magdalena , Procopie Roxana , Pamfilie Rodica , Bumbac Robert , Giușcă Smaranda , Mihai Mihaela , Jurconi Alexandru
Published: April 2024

The advent of m-commerce has reinvented and simplified the shopping experience for the digital native generation. The following questions were the starting points for this research: is nutrition labeling important in purchase decisions? Could a new format for food nutrition labeling in m-commerce be the optimal way to inform the younger generation and enrich their shopping experience? This study continues the authors’ research on the food preferences of the younger generation by conducting a quantitative study on a sample of 364 students. The aim of the paper is to identify the factors that influence online food orders and the ways in which nutrition labeling can enhance consumers’ purchasing experiences and eating habits. The results show that nutrition facts play an important role in online purchases of new or unfamiliar foods. Control over one’s own diet and a higher income also make digital natives more interested in ordering food online. The use of a mobile format for nutrition labeling would be the necessary update for the food industry to turn nutrition data into added value, help consumers get a balanced diet and personalize nutritional needs, and for policymakers to adjust nutrition standards and policies toward healthier and more responsible consumption patterns.
Spectroscopic Follow-up on Potential Magnetic Cataclysmic Variables
Authors: Szkody Paula , van Roestel Jan , Mason Paul A. , Littlefield Colin , Rich R. Michael , Bellm Eric C. , Romanov Filipp D. , Healy Brian F. , Jegou du Laz Theophile , Laher Russ R. , Rusholme Ben
Published: April 2024

Spectroscopic observations of nine cataclysmic variables that have been postulated to contain magnetic white dwarfs were obtained to further characterize their classifications, orbital parameters, inclinations, and/or accretion properties. Zwicky Transient Facility (ZTF) and Transiting Exoplanet Survey Satellite (TESS) data were also used when available. This information enables these systems to be useful in global population and evolution studies of close binaries. Radial velocity curves were constructed for eight of these systems, at various states of accretion. High-state spectra of ZTF0548+53 reveal strong He ii emission, large radial velocity amplitudes, as well as cyclotron harmonics yielding a magnetic field strength of 50 MG, confirming this as a polar system. Analysis of TESS data reveals an orbital period of 92.1 minutes. High-state spectra of SDSS0837+38 determine a period of 3.18 hr, removing the ambiguity of periods found during the low state, and showing this is a regular polar and not a pre-polar system. The ZTF light curve of CSS0026+24 shows a total eclipse with a period of 122.9 minutes, and features indicative of two accretion poles. A new, remarkably large spin-to-orbit ratio is found for ZTF1631+69 (0.61), making it, along with 2011+60 (=Romanov V48), likely stream-accreting intermediate polars. ZTF data reveal the presence of ∼2 mag low states in ZTF1631+69, and along with McDonald Observatory 2.1 m and TESS light curves, confirm a grazing eclipse that is deepest at a narrow subset of beat phases. The TESS data on PTF12313+16 also indicate a partial eclipse. Analysis of ZTF data on SDSS1626+33 reveals a period of 3.17 hr and suggests the presence of a partial eclipse.
Was There a 3.5 keV Line?
Authors: Dessert Christopher , Foster Joshua W. , Park Yujin , Safdi Benjamin R.
Published: April 2024

The 3.5 keV line is a purported emission line observed in galaxies, galaxy clusters, and the Milky Way whose origin is inconsistent with known atomic transitions and has previously been suggested to arise from dark matter decay. We systematically reexamine the bulk of the evidence for the 3.5 keV line, attempting to reproduce six previous analyses that found evidence for the line. We only reproduce one of the analyses; in the other five, we find no significant evidence for a 3.5 keV line when following the described analysis procedures on the original data sets. For example, previous results claimed 4σ evidence for a 3.5 keV line from the Perseus cluster; we dispute this claim, finding no evidence for a 3.5 keV line. We find evidence for background mismodeling in multiple analyses. We show that analyzing these data in narrower energy windows diminishes the effects of mismodeling but returns no evidence for a 3.5 keV line. We conclude that there is little robust evidence for the existence of the 3.5 keV line. Some of the discrepancy of our results from those of the original works may be due to the earlier reliance on local optimizers, which we demonstrate can lead to incorrect results. For ease of reproducibility, all code and data are publicly available.
Modeling the Reverberation Response of the Broad-line Region in Active Galactic Nuclei
Authors: Rosborough Sara A. , Robinson Andrew , Almeyda Triana , Noll Madison
Published: April 2024

The variable continuum emission of an active galactic nucleus (AGN) produces corresponding responses in the broad emission lines, which are modulated by light travel delays, and contain information on the physical properties, structure, and kinematics of the emitting gas region. The reverberation mapping technique, a time series analysis of the driving light curve and response, can recover some of this information, including the size and velocity field of the broad-line region (BLR). Here we introduce a new forward-modeling tool, the Broad Emission Line MApping Code, which simulates the velocity-resolved reverberation response of the BLR to any given input light curve by setting up a 3D ensemble of gas clouds for various specified geometries, velocity fields, and cloud properties. In this work, we present numerical approximations to the transfer function by simulating the velocity-resolved responses to a single continuum pulse for sets of models representing a spherical BLR with a radiatively driven outflow and a disklike BLR with Keplerian rotation. We explore how the structure, velocity field, and other BLR properties affect the transfer function. We calculate the response-weighted time delay (reverberation “lag”), which is considered to be a proxy for the luminosity-weighted radius of the BLR. We investigate the effects of anisotropic cloud emission and matter-bounded (completely ionized) clouds and find the response-weighted delay is only equivalent to the luminosity-weighted radius when clouds emit isotropically and are radiation-bounded (partially ionized). Otherwise, the luminosity-weighted radius can be overestimated by up to a factor of 2.
The NuSTAR View of Perseus: The Intracluster Medium and a Peculiar Hard Excess
Authors: Creech Samantha , Wik Daniel R. , Rossland Steven , Tümer Ayşegül , Wong Ka-Wah , Walker Stephen A.
Published: April 2024

As the brightest galaxy cluster in the X-ray sky, Perseus is an excellent target for studying the intracluster medium (ICM), but until recently, its active galactic nucleus (AGN) made studies of the diffuse emission near its center nearly impossible to accomplish with NuSTAR, due to the extended wings of NuSTAR's point-spread function. The development of a new open-source software package—nucrossarf—now allows the contribution from point and diffuse sources to be modeled so that scattered light from the AGN can be accounted for. Using this technique, we present an analysis of diffuse hard X-ray (3–25 keV) emission from the ICM using three archival NuSTAR observations of the Perseus cluster. We find a ∼10% excess of emission beyond 20 keV not describable by purely thermal models. By performing similar analyses of AGNs in archival observations, we have characterized the systematic uncertainty of the modeled AGN contribution to be 3.4%. However, in order to explain the excess, the total scattered AGN emission would have to be 39% stronger than we have measured. We test physical explanations for the excess, such as diffuse inverse-Compton emission potentially originating from the radio mini-halo, but we determine that none of the models are compelling. An upper limit on the inverse-Compton flux (≤1.5 × 10−11 erg s−1 cm−2) and a corresponding lower limit on the global magnetic field strength (≥0.35 μG) are derived. We discuss the potential origin and implications of the excess and present our characterization of the nucrossarf systematic uncertainty, which should be useful for future work.
The Molecular Exoskeleton of the Ring-like Planetary Nebula NGC 3132
Authors: Kastner Joel H. , Wilner David J. , Moraga Baez Paula , Bublitz Jesse , De Marco Orsola , Sahai Raghvendra , Wootten Al
Published: April 2024

We present Submillimeter Array (SMA) mapping of 12CO J = 2 → 1, 13CO J = 2 → 1, and CN N = 2 → 1 emission from the ring-like planetary nebula NGC 3132, one of the subjects of JWST Early Release Observation near-infrared imaging. The ∼5″ resolution SMA data demonstrate that the Southern Ring’s main, bright, molecule-rich ring is indeed an expanding ring, as opposed to a limb-brightened shell, in terms of its intrinsic (physical) structure. This suggests that NGC 3132 is a bipolar nebula viewed more or less pole-on (inclination ∼15°–30°). The SMA data furthermore reveal that the nebula harbors a second expanding molecular ring that is aligned almost orthogonally to the main, bright molecular ring. We propose that this two-ring structure is the remnant of an ellipsoidal molecular envelope of ejecta that terminated the progenitor star’s asymptotic giant branch evolution and was subsequently disrupted by a series of misaligned fast, collimated outflows or jets resulting from interactions between the progenitor and one or more companions.
Is the Radio Source Dipole from NVSS Consistent with the Cosmic Microwave Background and ΛCDM?
Authors: Cheng Yun-Ting , Chang Tzu-Ching , Lidz Adam
Published: April 2024

The dipole moment in the angular distribution of the cosmic microwave background (CMB) is thought to originate from the doppler effect and our motion relative to the CMB frame. Observations of large-scale structure (LSS) should show a related “kinematic dipole” and help test the kinematic origin of the CMB dipole. Intriguingly, many previous LSS dipole studies suggest discrepancies with the expectations from the CMB. Here, we reassess the apparent inconsistency between the CMB measurements and dipole estimates from the NVSS catalog of radio sources. We find that it is important to account for the shot noise and clustering of the NVSS sources, as well as kinematic contributions, in determining the expected dipole signal. We use the clustering redshift method and a cross-matching technique to refine estimates of the clustering term. We then derive a probability distribution for the expected NVSS dipole in a standard ΛCDM cosmological model including all (i.e., kinematic, shot noise, and clustering) dipole components. Our model agrees with most of the previous NVSS dipole measurements in the literature at better than ≲2σ. We conclude that the NVSS dipole is consistent with a kinematic origin for the CMB dipole within ΛCDM.
Sensitivity of the Helioglow to Variation of the Total Ionization Rate and Solar Lyα Emission
Authors: Kowalska-Leszczynska I. , Kubiak M. A. , Bzowski M. , Strumik M.
Published: April 2024

Direct observations of solar wind are mostly limited to the vicinity of the ecliptic plane. Retrieving the latitudinal structure of solar wind indirectly based on observations of the backscatter glow of interstellar neutral hydrogen is complex and requires support from theoretical models. The GLOWS instrument, to operate on the planned IMAP mission, will scan the helioglow along circumsolar rings with an angular distance of ∼75°. Its objective is to retrieve the latitudinal structure of the ionization rate of interstellar hydrogen and with this the structure of the solar wind. In preparation for the future analysis, we studied the sensitivity of the light curves to temporal and latitudinal variation of the ionization rate of interstellar hydrogen and the solar Lyα illumination. Based on carefully planned numerical experiments, we analyze the time delay and relaxation time of the system for variations of the ionization rate and solar illumination in heliolatitude and with time. We found that variations in the solar illumination are reflected in the helioglow without delay, but relaxation takes longer than the variation rise time. By contrast, variations in the ionization rate are anticorrelated with the helioglow brightness with a delay of several months. We also found that the helioglow is not sensitive to variations in the ionization rate at the solar poles, so retrieving the ionization rate and solar wind at the poles requires approximation of the ionization rate profiles with appropriate parametric functions.
Dwarf Pulses of 10 Pulsars Detected by FAST
Authors: Yan Yi , Han J. L. , Zhou D. J. , Xie L. , Kou F. F. , Wang P. F. , Wang C. , Wang T.
Published: April 2024

How pulsars radiate is a long-standing problem. Detailed polarization measurements of individual pulses shed light on currently unknown emission processes. Recently, based on supersensitive observations, dwarf pulses have been recognized as weak narrow pulses often appearing during the nulling state. In this study, we report the detection of dwarf pulses from 10 pulsars, PSRs B0525+21, B1237+25, J1538+2345, J1824−0127, J1851−0053, B1901+10, J1939+10, B1944+17, B2000+40, and J2112+4058, based on observations conducted with the Five-hundred-meter Aperture Spherical radio Telescope. Dwarf pulses of five pulsars are clearly discernible in the two-dimensional distribution of pulse intensity and pulse width. For the other five pulsars, PSRs J1538+2345, J1824−0127, J1939+10, B2000+40, and J2112+4058, only a few dwarf pulses are detected from pulse stacks. The dwarf pulses can emerge in both cone and core emission components for PSR B1237+25, and the polarization angles of these dwarf pulses are mostly in the orthogonal polarization mode of normal pulses for PSR B1944+17. In general, pulsars with detected dwarf pulses tend to be located within the “death valley” region of the distribution of pulsar periods and period derivatives.
JWST NIRCam Photometry: A Study of Globular Clusters Surrounding Bright Elliptical Galaxy VV 191a at z = 0.0513
Authors: Berkheimer Jessica M. , Carleton Timothy , Windhorst Rogier A. , Keel William C. , Holwerda Benne W. , Nonino Mario , Cohen Seth H. , Jansen Rolf A. , Coe Dan , Conselice Christopher J. , Driver Simon P. , Frye Brenda L. , Grogin Norman A. , Koekemoer Anton M. , Lucas Ray A. , Marshall Madeline A. , Pirzkal Nor , Robertson Clayton , Robotham Aaron , Ryan Russell E. , Smith Brent M. , Summers Jake , Tompkins Scott , Willmer Christopher N. A. , Yan Haojing
Published: April 2024

James Webb Space Telescope NIRCam images have revealed 154 reliable globular cluster (GC) candidates around the z = 0.0513 elliptical galaxy VV 191a after subtracting 34 likely interlopers from background galaxies inside our search area. NIRCam broadband observations are made at 0.9–4.5 μm using the F090W, F150W, F356W, and F444W filters. Using point-spread-function-matched photometry, the data are analyzed to present color–magnitude diagrams and color distributions that suggest a relatively uniform population of GCs, except for small fractions of reddest (5%–8%) and bluest (2%–4%) outliers. GC models in the F090W versus (F090W–F150W) diagram fit the NIRCam data well and show that the majority of GCs detected have a mass of ∼106.5
M
⊙, with metallicities [Fe/H] spanning the typical range expected for GCs (−2.5 ≲ [Fe/H]≲ 0.5). However, the models predict ∼0.3–0.4 mag bluer (F356W–F444W) colors than the NIRCam data for a reasonable range of GC ages, metallicities, and reddening. Although our data do not quite reach the luminosity function turnover, the measured luminosity function is consistent with previous measurements, suggesting an estimated peak at m
AB ∼ −9.4 ± 0.2 mag in the F090W filter.
Les carrés musulmans pendant la pandémie de Covid-19
Authors: Afiouni Nada
Published: April 2024

Cet article analyse, à l’échelon local, la gestion des carrés musulmans au Havre (France) et à Southampton (Royaume-Uni) pendant et après la pandémie de Covid-19. Il interroge les interactions des communautés musulmanes avec les autorités municipales à l’aune du cadre plus large des politiques nationales de gestion de la pluralité culturelle et religieuse. Les données analysées dans le présent article proviennent d’un travail de terrain réalisé dans ces deux villes : entre 2021 et 2022 pour le Havre, et entre 2022 et 2023 pour Southampton. En partant des enjeux communs aux communautés musulmanes concernant le domaine funéraire, cet article interroge la dimension locale des dynamiques entre les acteurs musulmans et les autorités municipales mais également mesure l’impact des politiques nationales de gestion de la pluralité culturelle et religieuse sur le secteur funéraire en temps de pandémie. Ce travail permet de souligner des formes de convergence dans la pratique entre les « modèles » nationaux français et britannique, généralement considérés comme opposés. Au-delà des divergences classiques, l’article souligne un réel décalage entre la perception de la situation funéraire par les communautés religieuses musulmanes et la réalité dans les deux villes.
Décider en écovillage
Authors: Moreau Camille
Published: April 2024

Projet alternatif d’habitat en milieu rural, l’écovillage Eotopia, en Bourgogne, expérimente une nouvelle manière de vivre en collectivité. Régi par la prise de décision par consensus, il entend incarner un idéal démocratique. Enquête en immersion.
Entre pragmatisme et utopie
Authors: Tchikladzé Floriane , Vidal Julien , Herphelin-Ogno Maureen , Vieira da Silva Victor
Published: April 2024

Ils sont de plus en plus nombreux à faire du sens de leur métier une priorité. Mais, face au défi climatique, les stratégies des jeunes professionnels divergent : utopie radicale d’un côté, pragmatisme ancré de l’autre. Un débat entre Floriane Tchikladzé, responsable des formations chez Jobs That Makesense, et Julien Vidal, auteur du podcast 2030 Glorieuses .
À quel prix protéger les investissements ?
Authors: Dupré Mathilde
Published: April 2024

Aujourd’hui, les investissements privés à l’étranger sont régis par des accords qui, en favorisant grandement les investisseurs, nuisent à la souveraineté des États. La légitimité de ces traités se trouve néanmoins de plus en plus remise en cause.
Un commentaire sur « Tous les goûts sont-ils dans la nature ? La traduction des valeurs publiques en significations officielles »
Authors: Stazyk Edmund C.
Published: April 2024

Ce commentaire sur l’article « Tous les goûts sont-ils dans la nature ? La traduction des valeurs publiques en significations officielles » considère le bien-fondé des arguments des auteurs et propose plusieurs recommandations aux chercheurs intéressés par les valeurs publiques.
Lutter contre le dépeuplement en Europe en analysant les risques financiers des collectivités locales
Authors: Navarro-Galera Andrés , Buendía-Carrillo Dionisio , Gómez-Miranda María Elena , Lara-Rubio Juan
Published: April 2024

Dans toute l’Europe, l’un des principaux problèmes auxquels sont confrontés les décideurs politiques est celui de la diminution des populations rurales. Dans de nombreux cas, cette baisse est aggravée par des niveaux élevés d’emprunts des gouvernements locaux. Bien que les chercheurs aient tenté de déterminer les causes de cette dette, on sait encore peu de choses sur les facteurs influençant le risque de défaut des petites et moyennes villes, des informations qui les aideraient à formuler des politiques pour lutter contre la perte de population. L’objectif de notre étude est d’identifier les facteurs pertinents concernant ce risque de défaut. Nous avons analysé les facteurs démographiques, socio-économiques et financiers dans le cadre d’un échantillon de 6456 gouvernements locaux espagnols en fonction de la taille de leur population. Nos résultats montrent que les politiques financières appliquées pour réduire ce risque devraient varier en fonction de la taille de la population, car certains facteurs exercent une influence spécifique sur les petites municipalités. Néanmoins, les variables socio-économiques et financières ont plus d’impact sur le risque de défaut que les facteurs démographiques. Nos conclusions sont nouvelles et utiles pour tous ceux qui luttent contre le dépeuplement des zones rurales en Europe, en raison de la pertinence des conclusions pour la conception de politiques publiques basées sur la durabilité des services publics dans les petites municipalités. Remarques à l’intention des praticiens La mesure du risque de défaut dans les gouvernements locaux fait apparaître des informations très pertinentes pour la conception des politiques publiques contre le dépeuplement. Les variables socio-économiques et financières ont plus d’impact sur le risque de défaut que les facteurs démographiques. L’évolution de la mesure du risque de défaut révèle que les politiques contre le dépeuplement doivent être définies en fonction de la taille des communes. Les facteurs d’influence sur le risque de défaut sont intéressants pour décider si les investissements du gouvernement sont financés par des prêts qui permettent de repeupler les petites municipalités.
La réputation organisationnelle dans la politique exécutive : les unités axées sur le citoyen dans la bureaucratie fédérale allemande
Authors: Fleischer Julia , Pruin Andree
Published: April 2024

Ces dernières années, les gouvernements ont intensifié leurs efforts pour renforcer l’orientation citoyenne dans la conception des politiques. Ils ont mis en place des lieux d’échange temporaires ainsi que des unités permanentes au sein de l’appareil gouvernemental pour intégrer les citoyens dans la formulation des politiques, ce qui a conduit à une « laboratorisation » des organisations du gouvernement central. Nous affirmons que l’évolution et le rôle de ces unités annoncent une nouvelle dynamique dans l’importance de la réputation organisationnelle pour la politique exécutive. Ces acteurs s’écartent de la palette classique d’unités organisationnelles au sein de l’appareil gouvernemental et ont donc besoin de se forger leur propre réputation vis-à-vis de divers publics au sein et en dehors de leur organisation mère. Sur la base d’une étude de cas comparative de deux de ces unités au sein de la bureaucratie fédérale allemande, nous montrons à quel point les attentes ambiguës de leurs publics remettent en question leur réputation organisationnelle. Les deux unités viennent à bout de ces tensions en équilibrant leur faible réputation professionnelle et procédurale avec une meilleure réputation performative et morale. Nous concluons que les unités gouvernementales qui visent à améliorer le souci du citoyen dans la conception des politiques peuvent tirer profit d’un dialogue avec les citoyens en tant que public externe pour compenser une réputation plus faible aux yeux de leurs publics au sein de l’organisation gouvernementale. Remarques à l’intention des praticiens De nombreux gouvernements ont introduit de nouveaux moyens pour renforcer les modèles de politiques centrées sur les citoyens, ce qui a conduit à l’émergence d’unités nouvelles au sein du gouvernement central qui diffèrent des structures et procédures bureaucratiques traditionnelles. Cette étude analyse la façon dont ces nouvelles unités peuvent se forger une réputation organisationnelle vis-à-vis des acteurs internes et externes dans l’élaboration des politiques gouvernementales. Nous montrons que ces unités s’affirment principalement sur la base de leur réputation performative et morale.
Indoor experiments of a horizontal multiple effects diffusion solar still: Influence of heat input and the number of stages
Authors: Almutlaq Abdulrahman
Published: April 2024

Clean water is important for human life, and obtaining it with the least amount of energy is significant. This research aims to desalinate water using a horizontal multiple effects diffusion solar still (DSS). A small distillation device with an area of 10 × 10 cm2 was designed and 3D printed. An electric heater was used to simulate solar radiation at 400, 700, and 1000 W/m2. The amount of water produced when using 1, 3, and 5 effects was recorded. The most notable results were: maximum water yield reached 1.93 kg/m2 h at 1000 W/m2, at which the solar to vapor conversion efficiency was 107%. The daily water yields throughout the year were estimated, and the maximum production was 10.16 kg/m2 during a day in June, when the global horizontal irradiance was 7.01 kWh/m2. The results were also compared with other distillation systems.
Augusto Roa Bastos, Vigilia del Almirante, et Jacques Attali, 1492
Authors: Blancofombona Maguy
Published: April 2024

Par une lecture de Vigilia del Almirante, roman d’Augusto Roa Bastos, et de 1492, étude historique de Jacques Attali, cet article aborde le mouvement déclenché en Europe par l’idée d’une possible nouvelle route vers l’Orient et également la possible existence de terres nouvelles dont quelques personnes étaient informées mais qu’il ne convenait pas de révéler. Il fait ressortir le mouvement que ne manque pas de susciter une carte, soit comme simple invitation à suivre un parcours, comme le propose l’écrivain franco-écossais Kenneth White, soit, comme cela se produit à la fin du xve siècle, en poussant le monde européen à se tourner vers l’Atlantique et à ne plus considérer exclusivement la Méditerranée et les autres terres connues jusqu’alors.La cartographie dispose aujourd’hui d’une plus grande information, tout est plus exact de par le développement croissant de la technologie, et l’homme avance d’une autre manière. Mais il est difficile de nous débarrasser du passé car il nous ramène sans cesse au même point de départ pour orienter le présent et le futur. Depuis quelques années, je vois l’Europe se tourner vers l’Est (l’Orient), rappelant le mouvement qu’elle avait accompli au xve siècle, quand, cherchant un chemin pour atteindre plus aisément les Indes, elle a rencontré l’Amérique1.
Cartografías borgeanas
Authors: Villanueva Graciela
Published: April 2024

Mapas, atlas, planos, mapamundis, índices cartográficos y globos terráqueos vuelven una y otra vez en los cuentos, ensayos y poemas de Jorge Luis Borges. Copia tautológica o duplicación inquietante de la realidad, versión secreta del propio yo o imagen de la divinidad, clave del universo o cifra de la eternidad, la cartografía de Borges condensa buena parte de los temas y motivos que le interesan al escritor. Este artículo vuelve sobre algunas de estas figuras para intentar entender el modo en que esos «pacientes laberintos de líneas» dan cuenta del imaginario borgeano.
Cartes et cartographies de Buenos Aires dans la littérature argentine contemporaine : César Aira, Marcelo Cohen et Sergio Chejfec
Authors: Dahan Salomé
Published: April 2024

À travers les regards croisés de trois auteurs, César Aira (1949), Marcelo Cohen (1951) et Sergio Chejfec (1956), cet article propose de parcourir, dans leurs entremêlements, les cartographies réelles et fictives de Buenos Aires dans la littérature argentine contemporaine. Il s’agit d’étudier la manière dont les textes construisent, par l’imagination, les espaces absents des cartes de la ville actuelle et les nouvelles réalités qu’ils supposent, mais également les rapports étroits entre structure de l’espace et organisation du récit. Il semblerait, chez ces écrivains, que l’écriture épouse la forme des espaces réels en même temps qu’ils dictent eux-mêmes les tours pris par le récit. Cette réflexion sur la cartographie aspire à explorer la manière dont s’imbriquent la poétique de l’espace et la poétique du récit à partir des métamorphoses réelles de la ville de Buenos Aires dans les dernières décennies et des bouleversements de l’imaginaire urbain que ces métamorphoses supposent.