bluuebunny/crossref_metadata_2025 huggingface dataset:
FABRICAÇÃO DA LIGA DE ALUMÍNIO AA2090 ATRAVÉS DAS TÉCNICAS DE METALURGIA DO PÓ CONSOLIDADA POR SINTERIZAÇÃO
Authors: Torquato Jonathan Vinícius Moreira , Silva Clécio Vicente da , Lira Heronilton Mendes de , Silva Inaldo Amorim da , Silva João Lucas Araujo da , Lima Kamilla Rayssa Lucas de , Madureira Lizandra Lira , Muniz Max Breno Bezerra , Júnior Moisés Euclides da Silva , Filho Oscar Olímpio de Araújo
Published: December 2024

A pesquisa explorou a produção da liga Al-Cu-Li AA2090 por metalurgia do pó, alternativa à fundição que reduz custos e defeitos. Pós da liga foram moídos em alta energia (MAE), compactados a frio e sinterizados, obtendo-se corpos densos. A caracterização por microscopia ótica (MO), microscopia eletrônica de varredura (MEV) e espectroscopia de energia dispersiva (EDS) indicou porosidade elevada, baixa densificação e microestrutura heterogênea. Ainda assim, a dureza Vickers alcançada foi alentadora, mostrando potencial para aprimorar as propriedades mecânicas. Ajustando parâmetros de moagem, compactação e sinterização, espera-se atenuar a porosidade, uniformizar a microestrutura e melhorar a resistência mecânica. Assim, a metalurgia do pó demonstra viabilidade para fabricar ligas de alto desempenho, superando limitações da rota de fundição. Este estudo contribui para o entendimento do processamento do Al-Cu-Li via MAE, evidenciando o papel essencial das técnicas de caracterização na análise das correlações entre estrutura e propriedades. Tais resultados abrem perspectivas para otimização futura, visando ligas AA2090 mais densas, homogêneas e resistentes, adequadas a aplicações exigentes em setores como aeroespacial. Com ajustes criteriosos nos parâmetros, é possível elevar o potencial desta rota, fornecendo materiais avançados e leves.
UMA INVESTIGAÇÃO DOS ARTIGOS SOBRE GESTÃO ESCOLAR NA EDUCAÇÃO INFANTIL PUBLICADOS NA BASE DE DADOS SCIELO
Authors: Paula Evelin Caroline de
Published: December 2024

O artigo consiste em uma pesquisa do tipo de mapeamento, sendo assim um breve estudo bibliométrico, realizada a partir de material já elaborado, então foi realizado uma busca sobre a temática gestão educacional na educação infantil em uma base de dados que contém periódicos científicos de diversas áreas. Por meio deste levantamento, buscou-se uma base de informações para realizar as reflexões acerca da gestão educacional na educação infantil. Então, o estudo objetivou descrever a gestão educacional na educação infantil na abordagem da pesquisa científica, fazendo um levantamento dos artigos encontrados na base da Scientific Electronic Library Online (SciELO). Pode-se inferir que a pesquisa qualitativa está mais presente nos estudos identificados. A temática gestão educacional na educação infantil tende a ser fundamental para o funcionamento das Unidades escolares.
DECOLONIALIDADE E RELIGIÕES AFRO-BRASILEIRAS: RESISTÊNCIA, EPISTEMOLOGIAS E PRÁTICAS EMANCIPATÓRIAS
Authors: NETO EMANOEL JOSÉ SCHNEIDER , Almeida Flávio Aparecido de , Santos Feiruque de Jesus dos
Published: December 2024

Este artigo investiga a relação entre a decolonialidade e as religiões afro-brasileiras, analisando como essas tradições espirituais se configuram como espaços de resistência cultural e epistemológica frente às estruturas coloniais. Sob a perspectiva das ciências da religião, a pesquisa aborda a trajetória histórica de marginalização dessas práticas no Brasil, evidenciando o impacto da colonialidade do saber e do ser na deslegitimação dos saberes e subjetividades negras. Destacam-se as contribuições dessas religiões para a justiça epistêmica, ao resgatar cosmologias ancestrais e oferecer alternativas às epistemologias hegemônicas, bem como para a reafirmação de identidades negras e periféricas em uma sociedade marcada pelo racismo estrutural. Os resultados apontam que os terreiros funcionam como espaços de acolhimento e empoderamento, ressignificando o lugar da espiritualidade na sociedade e descolonizando imaginários sociais por meio de rituais e celebrações públicas. No entanto, essas religiões enfrentam desafios contemporâneos, como a intolerância religiosa, que continuam a reproduzir dinâmicas de opressão colonial. A pesquisa conclui que as religiões afro-brasileiras transcendem o campo espiritual, atuando como práticas políticas e epistemológicas que reimaginam e reafirmam identidades e subjetividades marginalizadas, contribuindo para a construção de uma sociedade mais plural e inclusiva.
Pengungkapan Manajemen Risiko, Kepemilikan Manajerial Dan Kepemilikan Institusional terhadap Nilai Perusahaan Melalui Kinerja Keuangan
Authors: Aprilia Indah Mlia Wati Malik  , Dwi Yana Amalia Sari Fala  , Herman Darwis
Published: December 2024

This research aims to examine the direct influence of the variables Risk Management Disclosure, Managerial Ownership and Institutional Ownership on Company Value. And test the indirect influence of the Risk Management Disclosure, Managerial Ownership and Institutional Ownership variables on Company Value through Financial Performance in the Indonesian Banking Industry. The population in this study amounted to 47 banking industries. By using the purposive sampling method, a sample of 8 companies was obtained. The data testing methods used are Panel Data Regression Analysis and Path Analysis. The results of this research indicate that Risk Management Disclosure, Managerial Ownership and Institutional Ownership have a direct effect on Company Value. Then Disclosure of Risk Management and Institutional Ownership indirectly influences Company Value through Financial Performance in the Indonesian Banking Industry. Meanwhile, Managerial Ownership has no effect on Company Value through Financial Performance in the Indonesian banking industry.
QUALITY AND SAFETY OF FERMENTED FEED FOR PIGS USING AGRICULTURAL WASTE
Authors:   Russian State Agrarian University – Moscow Agricultural Academy named after K.A. Timiryazev, AMERKHANOV Kh.A. , MIRONOVA O.A. ,   RUDN University; All-Russian Plant Quarantine Center
Published: December 2024

The article is devoted to the study of quality and safety indicators of feed for pigs fermented using Lesnov's starter culture, made from agricultural waste and processing industry. In a comparative aspect, fermented feedstuffs made according to the following recipe were studied. Recipe №1: brewer's grains – 40%; wheat bran – 20%; sunflower cake – 20%; mushroom substrate – 20%. Recipe №2: beer grains – 40%; wheat bran – 10%; sunflower cake – 10%; mushroom substrate – 40%.
Taking into account the indicator of metabolic energy, physical and chemical indicators, it is recommended to use fermented compound feed for feeding pigs, made according to recipe №1.
FEATURES OF IMMUNOLOGICAL AND POSTMORTEM DIAGNOSTICS OF TRICHINELLOSIS IN PIGS CAUSED BY T.PSEUDOSPIRALIS
Authors:   Vyatka State Technical University, ZHDANOVA O.B. ,   All-Russian Research Institute of Parasitology – Branch of the K.I. Skryabin and Ya.R. Kovalenko All-Russian Research Institute of Experimental Veterinary Medicine, ANDREYANOV O.N. ,   All-Russian Research Institute of Parasitology – Branch of the K.I. Skryabin and Ya.R. Kovalenko All-Russian Research Institute of Experimental Veterinary Medicine, CHASOVSKIKH O.V. ,   Vyatka State Technical University, USPENSKY A.V. ,   All-Russian Research Institute of Parasitology – Branch of the K.I. Skryabin and Ya.R. Kovalenko All-Russian Research Institute of Experimental Veterinary Medicine, SOBOLEVA O.A. ,   Vyatka State Technical University
Published: December 2024

The CT examination revealed that T.pseudospiralis larvae were located in the muscles of animals unevenly, both when making sections within one muscle group and in different groups of the muscles under study.
The chewing muscles, tongue muscles, and orbicularis oculi muscle were examined, and it was found that despite the pronounced periorbital edema, the orbicularis oculi muscle was slightly affected, while the chewing muscles and tongue contained more larvae than the intercostal muscles. The largest number of T.pseudospiralis larvae in pigs was found, as with T.spiralis invasion, in the diaphragmatic crura.
In general, the available arsenal of diagnostic methods allows for the reliable prevention of porcine trichinellosis caused by T.pseudospiralis and to ensure the release of products that are safe with respect to this dangerous zoonosis.
Ternary Molten Salt as a Phase Change Material: A Review
Authors: Li Li , Noor Muhamad Mat , Kadirgama Kumaran , Samylingam Lingenthiran , Harikrishnan Santhanam
Published: December 2024

Phase change materials have gained much attention due to their excellent properties. This research paper delves into the utilization of ternary molten salt as a thermal storage medium for Thermal Energy Storage (TES) within the context of Concentrated Solar Power (CSP) systems. Meanwhile, different types and compositions of molten salts are discussed in detail in this paper. Molten salts are used extensively as heat transfer media and in the production of solar power because of their special qualities and affordable cost. Nitrates are less expensive, less corrosive, and do not break down below 500 °C when compared to other molten salts. For this reason, the primary heat storage component of solar power generation is mixed molten nitrate salts.
Hydrological Modelling of Sediment Yield in the Upper Basin Region of Kirkuk City Watershed
Authors: Hussein Ameer Hashim , Alfatlawi Thair Jabbar Mizhir , Alwash Reham
Published: December 2024

Mountain sedimentation and undue erosion provide significant challenges for dams since materials accumulate within reservoirs that hold water, reducing the capacity for storing living water, which is the most important goal of dam building. Iraq is one of the nations that will have a big problem getting sufficient water because its water requirement continues to climb, and the supplying countries provide less water to Iraq. The present research focuses on the upper basin of the Kirkuk City watershed in northeastern Iraq. The largest watershed region, spanning approximately 420 km2 within Al-Sulaymaniyah and Kirkuk Provinces. The objective is to quantify and foresee the sediment yield in this basin using 43 years of daily environment information and various rainstorm events with various intensities. The model was adjusted and confirmed by comparing it to the monthly mean surface flow and sediment readings obtained at the Kirkuk gauging station. The Soil and Water Assessment Tool (SWAT) model was utilized to simulate the upper basin region of Kirkuk City. The aforementioned model uses the geographic information system (GIS) software to analyse necessary information from GIS layers of the electronic contour modelling kind of soil, using of land, and coverage by integrating it with the appropriate climatic information. The kinematic erosion (KINEROS) and runoff model can simulate intricate watershed behaviour by precisely adjusting for the geographical variation of soils, distribution of rainfall sequences, and vegetation. The hydrological features of the Kirkuk city basin reveal that the subdivisions with the highest erosion rates cannot transport the debris or deposits to the reservoir, primarily due to propagation damages, percolating, and other smaller barriers. The optimal curve number (CN) was determined to be between 84 and 88, while the land cover factor (C) ranged from 0.005 to 0.04. The model validation results indicate that the Kirkuk Dam reservoir received a total volume of water estimated at 118.7 million cubic metres (MCM) and a total silt yield of 0.85 million tonnes. The “KINEROS” simulation modelling for the sediment yield closely matches the upper basin of Kirkuk watershed's deformation and sedimentation behaviour during singular rainfall events; this is particularly true for parts of watersheds located near the watershed area entrance.
Klias Peat Soil: A Depth-Based Property Assessment
Authors: Mohamad Habib Musa , Sulaiman Mohd Asyraf Hanafi , Saida Nur Aqilah , Suhaimi Anis Anisha , Sutarno Mohd Syeddre , Md Talib Faizah , Zainorabidin Adnan , Suro Sajiharjo Marto
Published: December 2024

Peat soil is crucial in Southeast Asia, particularly in Sabah, where it exhibits high water content, low density, and significant organic matter. This research investigates the unique engineering behavior and characteristics of Klias tropical peat, focusing on index properties such as fiber content, organic content, and natural water content compared to other Malaysian regions. Key objectives include studying the physical properties, decomposition levels, and in-situ density of peat with depth, as well as examining its chemical composition. Results indicate distinct variations in peat density and composition at different depths, with average moisture content at 258%, organic content at 91%, fiber content at 75%, pH at 3.7, and specific gravity at 0.748. The degree of decomposition is classified as H5-H6. Findings reveal that peat density increases with depth, while sulfur remains constant (0.1% to 3.4%), oxygen decreases (28% to 24%), and carbon increases (60% to 76%) with depth. This study also explores the application of Peat Sampler in understanding the engineering behavior and characteristics of peat.
Using Deep Learning Algorithms to Predict Dental Implant Brands from Panoramic Radiographs
Authors: Taşdemir İsmail , İçen Veysel , Kölüş Türkay
Published: December 2024

Aim: The aim of this study is to predict dental implant brands from panoramic radiographs using deep learning algorithms.
Material and Method: Panoramic radiographs of patients previously undergoing dental implant procedures were retrospectively screened. Radiographs were grouped into three different implant brands, with a minimum of 250 dental implants from each brand. The obtained radiographs were divided into three groups: training, validation, and test sets, with an equal distribution of implant brands in each group. 70% of the implants were used for training, 20% for validation, and 10% for the test dataset. Trained models were tested on the previously separated test set that was not used in the deep learning model training to determine the implant brand.
Results: A total of 882 implants were evaluated in 220 panoramic radiographs. The study found that the accuracy of the implants tested in the deep learning model was 75% and the sensitivity was 78.26%. The accuracy of the model was 94.73%. The F1 score, which is a parameter frequently used in comparing artificial intelligence models with each other, was found to be 85.71%.
Conclusion: The results of this study show that implants can be identified from panoramic radiographic images using deep learning algorithms. However, to use this system routinely in clinical practice, it is necessary to create libraries by conducting studies that include many different implant systems and a large number of images.
Redistribusi Tanah Objek Reforma Agraria (TORA) Guna Mewujudkan Kesejahteraan Masyarakat Dalam Rangka Percepatan Pelaksanaan Reforma Agraria
Authors: Mulyaputri Elsani
Published: December 2024

Departing from the guidelines of the nation's noble ideals to prosper the people's lives, the government through the Agrarian Reform program aims to change the unequal agrarian structure by redistributing land to the community, especially farmers, so as to create social and economic justice. The purpose of this study is to find out and describe the redistribution of Land Object of Agrarian Reform (TORA) in the context of accelerating the implementation of agrarian reform and the implementation of agrarian reform in order to realize community welfare. This research is processed with a normative juridical approach method, namely by looking at law as a set of regulations/rules or doctrines that have a normative nature (law in book). The results of the TORA redistribution problem in the context of accelerating the implementation of agrarian reform have not been fully achieved, especially in the redistribution of forest area land. Agrarian reform has had a significant impact on improving people's welfare but it is not comprehensive, it is hoped that all elements can succeed in agrarian reform.
Kepastian Hukum dan Hak Kreditor Konkuren Dalam Pembatalan Perjanjian Perdamaian pada Kasus PKPU (Studi Putusan : Nomor 15/Pdt.Sus-Pembatalan Perdamaian/2022/PN.Niaga/Jkt.Pst)
Authors: Izulkha ⁠Ayesha Tasya , Syailendra P ⁠Moody Rizqy
Published: December 2024

This study discusses the legal steps that can be taken by concurrent creditors related to the acquisition of a debtor company in the bankruptcy and PKPU process, with a focus on legal certainty and protection of creditor rights. The background of this study is related to the legal complexity faced by concurrent creditors when a peace agreement is canceled, as well as the acquisition of a debtor company that can affect creditor rights. The purpose of this study is to analyze the legal steps that can be taken by concurrent creditors to ensure that their rights are protected in the process. The method used is a normative approach with an analysis of laws and regulations related to bankruptcy and PKPU, as well as a study of relevant decisions regarding the cancellation of a peace agreement. The results of the study indicate that concurrent creditors have several legal steps that can be taken, such as submitting an application for cancellation of a detrimental acquisition, opposing an acquisition agreement deed that is considered invalid, and filing a lawsuit to protect their rights in the bankruptcy and PKPU process. In conclusion, concurrent creditors must be active in fighting for their rights and using appropriate legal steps in order to obtain fair debt payments.
Foliar Application of Iron Fortified Bacterio-siderophore And Rhizobium Seed Inoculation Promote Growth and Grain Fe Contents in Soybean and Chickpea
Authors: Ehsan Shabana , Waheed Swebba , Sarwar Aleem , Chaudhary Neelam , Ashraf Waqas , Affan Quais , Anwar Faraz , Zafar Hafsa , Saqib Amar Iqbal
Published: December 2024

Iron (Fe)is one of the principle micronutrients critical for plant development and grain quality. Chickpea (Cicer aeritum) and soybean (Glycine max) are vital leguminous crops known for high protein contents in grain. But quality of grain is affected due to low level of available Fe content. Application of Fe-enriched bacteriosiderophore through foliar spray might increase Fe content in grain and improve its quality. Therefore, present study was conducted to explore the interactive effect of rhizobium application as seed inoculation and bacteriosiderophore as foliar spray on growth and yield parameters of legume crops. Rhizobium sp. from chickpea nodules was selected for seed inoculation and bacillus megaterium as foliar spray on the basis of amount of siderophore produced.  Their synergestic effect was tested on field grown chickpea and soybean crops by applying bacteriosiderophore with or without inorganic Fe addition on foliage at flowering stage. Data regarding plant height, No. of nodules after a week of spray and pods per plant, grain yield, N, P uptake and grain Fe contents were recorded at time of harvest. The data of grain quality showed more improvement in iron contents in soybean (1.44 fold) and chickpea (4.07 fold) as compared to control (water) with synergistic effect of rhizobium and bacterio-siderophore. Maximum plant height, No. of nodules and pods were observed in combined application of bacteriosiderophore enriched with iron and rhizobium. Similarly, maximum chickpea grain yield of 2.16 and 1.6-fold in soybean produced where coinoculation of seed with rhizobium and foliar bacteriosiderophore was done. Thus, it was observed that foliar implantation of siderophore containing bacteria with added Fe could be an economical approach towards Fe fortification in leguminous crop plants grown on alkaline calcareous soil
The Intrinsic Flattening of Galaxy Disks
Authors: Favaro Jeremy , Courteau Stéphane , Comerón Sébastien , Stone Connor
Published: December 2024

Highly inclined (edge-on) disk galaxies offer the unique perspective to constrain their intrinsic flattening, c/a, where c and a are, respectively, the vertical and long radial axes of the disk measured at suitable stellar densities. The ratio c/a is a necessary quantity in the assessment of galaxy inclinations, three-dimensional structural reconstructions, and total masses, as well as a constraint to galaxy formation models. The 3.6 μm maps of 133 edge-on spiral galaxies from the Spitzer Survey of Stellar Structure in Galaxies (S4G) and its early-type galaxy extension are used to revisit the assessment of c/a free from dust extinction and away from the influence of a stellar bulge. We present a simple definition of c/a and explore trends with other galactic physical parameters: total stellar mass, concentration index, total H i mass, mass of the central mass concentration, circular velocity, model-dependent scales, and Hubble type. Other than a dependence on early/late Hubble types and a related trend with light concentration, no other parameters were found to correlate with the intrinsic flattening of spiral galaxies. The latter is mostly constant with 〈c/a〉 = 0.124 ± 0.001 (stat) ± 0.033 (intrinsic/systematic) and greater for earlier types.
The Rotation Properties of δ Sct and γ Dor Stars
Authors: Wang Jiyu , Chen Xiaodian , Deng Licai , Zhang Jianxing , Sun Weijia
Published: December 2024

Based on the LAMOST spectroscopy and TESS time-series photometry, we have obtained a main-sequence star sample of δ Scuti and γ Doradus stars. The sample includes 1534 δ Sct stars, 367 γ Dor stars, 1703 δ Sct ∣γ Dor stars, 270 γ Dor ∣δ Sct stars, along with 105 “dsct candidates” and 32 “gdor candidates”. After correcting for projection effects, we derived the equatorial rotational velocity distribution for δ Sct and γ Dor stars and compared it with that of normal stars. The rotational velocity distributions of δ Sct and γ Dor stars are extremely similar, with the only difference potentially due to the rotational variable stars that have not been completely removed. In contrast, the rotational velocity distribution of normal stars is more dispersed compared to pulsating stars. Additionally, the peak rotational velocity of the pulsating stars is about 10 km s−1 higher than that of normal stars. Unlike the normal stars, which show a monotonic increase in peak velocity with mass between 1.8 and 2.5 M
⊙, the rotational velocity distribution of δ Sct stars does not exhibit a strong mass dependence. We also found that normal stars accelerate during the late main-sequence evolutionary phase, while δ Sct stars decelerate. Furthermore, there may still be unclassified stars with diverse rotational properties in the normal star sample compared to the δ Sct stars, which is likely to be an important contributor to the broader dispersion observed in its rotational velocity distribution. The photometric amplitude in δ Sct stars is modulated with rotational velocity, with high-amplitude stars typically rotating slowly and low-amplitude stars showing a broad distribution of rotational velocities.
Engine-fed Kilonovae (Mergernovae). II. Radiation
Authors: Ai Shunke , Gao He , Zhang Bing
Published: December 2024

The radioactive power generated by materials within the ejecta of a binary-neutron-star (BNS) merger powers an optical transient known as a kilonova. When the central remnant of a BNS merger is a long-lived magnetar, it continuously produces a highly magnetized wind, altering both the dynamics and temperature of the ejecta, leading to the expected emergence of an engine-fed kilonova. In the first paper of this series, we conducted a detailed study of the dynamics of wind-ejecta interaction and the efficiency of energy injection through shocks. In this work, we combine this dynamical evolution with both shock-heating and additional X-ray irradiation to model photon diffusion within a constant-opacity ejecta. By calculating the radiation, we obtain the light curve and spectral energy distribution (SED). Our findings reveal that, with energy injection, a blue bump typically appears in the early stages (≲1 day). Furthermore, if the magnetar has not spun down by that time, a brightening in the later stages occurs. Despite this, in a large parameter space, the expected luminosity of the engine-fed kilonova is not significantly higher than the typical r-process kilonova due to limited heating efficiency. The SED of engine-fed kilonovae peaks in the relatively blue band in the early stages and evolves toward the red, but at a slower rate compared to the typical r-process kilonova.
Glitches and Glitching Clusters in Rotation-powered Pulsars
Authors: Zhu Pei-Xin , Zheng Xiao-Ping
Published: December 2024

The study of pulsar glitch phenomena serves as a valuable probe into the dynamic properties of matter under extreme high-density conditions, offering insights into the physics within neutron stars. Providing theoretical explanations for the diverse manifestations observed in different pulsars has proven to be a formidable challenge. By analyzing the distribution of glitch sizes and waiting times, along with the evolution of cumulative glitch sizes over time, we have uncovered a long-term clustering phenomenon for pulsar glitches. This perspective allows us to approach the distinct glitch representations in various pulsars from a unified standpoint, connecting the same periodicity of observational data to the randomness. Without relying on specific physical models, we utilized the coefficient of variation to numerically determine optimal clustering numbers and clustering periods for sample pulsars. Our analysis involving 27 pulsars has revealed a clear linear relationship between the glitch cluster period and characteristic age. Of interest, the cumulative distribution of functions of cluster sizes and interval times have the same patterns, which can be synchronously fitted by Gaussian processes. These results may indicate novel understandings of glitches and the resulting processes.
A Novel Approach to Understanding the Link between Supermassive Black Holes and Host Galaxies
Authors: Sasseville Gabriel , Hlavacek-Larrondo Julie , Berek Samantha C. , Eadie Gwendolyn M. , Rhea Carter Lee , Springford Aaron , Mezcua Mar , Haggard Daryl
Published: December 2024

The strongest and most universal scaling relation between a supermassive black hole (BH) and its host galaxy is known as the M
•–σ relation, where M
• is the mass of the central BH, and σ is the stellar velocity dispersion of the host galaxy. This relation has been studied for decades and is crucial for estimating BH masses of distant galaxies. However, recent studies suggest the potential absence of central BHs in some galaxies, and a significant portion of current data only provides upper limits for the mass. Here, we introduce a novel approach using a Bayesian hurdle model to analyze the M
•–σ relation across 244 galaxies. This model integrates upper mass limits and the likelihood of hosting a central BH, combining logistic regression for BH hosting probability with a linear regression of mass on σ. From the logistic regression, we find that galaxies with a velocity dispersion of 11, 34, and 126 km s−1 have a 50%, 90%, and 99% probability of hosting a central BH, respectively. Furthermore, from the linear regression portion of the model, we find that M
• ∝ σ
5.8, which is significantly steeper than the slope reported in earlier studies. Our model also predicts a population of undermassive BHs (M
• = 10–105
M
⊙) in galaxies with σ ≲ 127 km s−1 and overmassive BHs (M
• ≥ 1.8 × 107) above this threshold. This reveals an unexpected abundance of galaxies with intermediate-mass and ultramassive BHs, accessible to next-generation telescopes like the Extremely Large Telescope.
Decoding the Future of Exoplanets: Asteroseismic Confirmation of Subgiant and Red Giant Hosts
Authors: Lin Wen-Xu , Qian Sheng-Bang , Zhu Li-Ying , Liao Wen-Ping , Li Fu-Xing , Shi Xiang-Dong , Li Lin-Jia , Zhao Er-Gang
Published: December 2024

Asteroseismology has emerged as a powerful tool to unravel the intricate relationships between evolved stars and their planetary systems. In this study, we leverage this technique to investigate the evolutionary stages of five exoplanet host stars, each exhibiting solar-like oscillations. Building on our previous work that identified two host stars as red clump and red giant branch (RGB) stars, this study focuses on a new and broader sample. By precisely measuring asteroseismic parameters such as the period spacing of dipole gravity modes (ΔΠ1), we provide definitive confirmation of these stars’ evolutionary states as subgiants or RGB stars. These results are not only crucial for understanding the internal structures of evolved stars but also for predicting the eventual fate of their planetary companions, which may face engulfment as their host stars expand. This research highlights the profound role of asteroseismology in advancing our knowledge of planetary system evolution and opens new pathways for exploring how stellar evolution impacts planetary survival. Our findings set the stage for future studies on the dynamic fates of exoplanets, providing key insights into the intricate processes of stellar and planetary evolution.
Self-interacting Dark Matter, Core Collapse, and the Galaxy–Galaxy Strong-lensing Discrepancy
Authors: Dutra Isaque , Natarajan Priyamvada , Gilman Daniel
Published: December 2024

Gravitational lensing by galaxy clusters has emerged as a powerful tool to probe the standard cold dark matter (CDM) paradigm of structure formation in the Universe. Despite the remarkable explanatory power of CDM on large scales, tensions with observations on small scales have been reported. Recent studies find that the observational cross section for galaxy–galaxy strong lensing (GGSL) in clusters exceeds the CDM prediction by more than an order of magnitude and persists even after rigorous examination of various possible systematics. We investigate the impact of modifying the internal structure of cluster dark matter subhalos on GGSL and report that altering the inner density profile, given by r

γ
, to steeper slopes with γ > 2.5 can alleviate the GGSL discrepancy. This is steeper than slopes obtained with the inclusion of the contribution of baryons to the inner regions of these subhalos. Deviating from the γ ~ 1.0 cusps that CDM predicts, these steeper slopes could arise in models of self-interacting dark matter undergoing core collapse. Our results motivate additional study of subhalo core collapse in dense cluster environments.
Determination of the Abundance of Mercury from the Hg ii Line at 5677.10 Å in Late B-type Stars. XII. HD 7374 (87 Psc)
Authors: Monier Richard
Published: December 2024

The weak line of Hg ii located at 5677.10 Å is not detected in a coadded ELODIE spectrum of the HgMn star HD 7374 which may be explained by the decrease of the signal-to-noise ratio in the red part of the spectrum. The synthesis of various spectral intervals yields several new measurements of the abundances of helium, carbon, oxygen, magnesium, aluminum, silicon, titanium, chromium, manganese, iron, nickel, gallium and yttrium. Most of these new measurements agree well with previous measurements.
Taxons, classifications : de la théorie au cahier des charges
Authors: Deleporte Pierre
Published: December 2024

La délimitation des taxons et la classification biologique consistent à rassembler conceptuellement des individus qui n’ont pas de cohérence matérielle entre eux. Les classes et les classifications sont des concepts humains, et non pas des entités matérielles « naturellement » cohérentes (et donc encore moins des « individus »). Cela ne veut pas dire qu’ils soient forcément dénués de sens ou inutiles. Mais on peut les concevoir de différentes manières, avec des significations différentes selon les contextes théoriques dans lesquels on les élabore et l’utilisation que l’on veut en faire. Une classification sensée repose nécessairement sur des bases théoriques. Une classification utile optimale doit répondre au cahier des charges correspondant à l’usage particulier que l’on veut en faire. La classification unique, « naturelle », évidente et d’usage universel est un mythe. Ses partisans se leurrent eux-mêmes sur ce qu’ils font, et ne peuvent progresser dans leurs débats avec d’autres systématiciens faute de bases logiques communes. « Tout n’est pas bon » en systématique, notamment parce que « n’importe quoi » ne peut pas être bon à tout faire.
Différences de conceptions et pratiques pour la fin de vie entre la France et Genève
Authors: Thomsen Christian
Published: December 2024

Différences de conceptions et pratiques pour la fin de vie de vie entre la France et Genève. Mise en perspective de la question de l’aide à mourir – En France, une loi sur la fin de vie est attendue courant 2024. Elle devrait aborder notamment les questions en lien avec l’aide active à mourir. Dans ce contexte, il est important de mettre en évidence les différences de conception, de moyens et de pratiques palliatives entre la France et la Suisse, et, de décrire la cohabitation des professionnels en médecine palliative avec la pratique du suicide assisté dans ce pays. Au–delà des différences linguistiques, la médecine palliative est une discipline à part entière en Suisse, disposant de moyens plus conséquents ; le rapport à l’anticipation des soins et au cadre législatif y est très différent. En Suisse, la sédation palliative n’est pas encadrée par une loi fédérale ; sa mise en œuvre diffère peu de la pratique en France. Le suicide assisté est autorisé en Suisse, avec des modalités variables d’un canton à l’autre, concernant la possibilité de réalisation hors du domicile, à l’hôpital ou en EMS. Des associations à but non lucratif sont actives dans ce domaine. Certaines acceptent les demandes des personnes ne résidant pas en Suisse. La cohabitation entre ces associations et les professionnels de soins palliatifs semble plutôt transparente et apaisée.
Piezoelectric energy harvesting under free and forced vibrations for different operating conditions
Authors: Alaya Amine Ben , Mrad Charfeddine , Kourda Férid
Published: December 2024

The field of energy harvesting has grown rapidly, with the huge development in low-power devices and the Internet of Things (IoT). With the intent of harvesting electrical energy for self-powered devices, piezoelectric technology is considered. In this study, we proposed several electrical and mechanical improvements to enhance the electrical energy produced through piezoelectricity. To determine the best electrical configuration to harvest piezoelectric energy, three harvesting electric circuits were proposed and tested using a piezoelectric material (PZT-5H) mounted directly on a vibration exciter. The harvested electrical energy by each circuit was determined at different excitation frequencies, from 20 to 50 Hz, with an excitation amplitude of 2 mm. The favorable electric circuit produced approximately 35 μJ of electrical energy at an excitation frequency of 50 Hz. This circuit was subsequently used for the remaining aspects of this work. To enhance the obtained electrical energy, a fixed-free metallic plate was used. First, free vibration was tried, imposing an excitation displacement of different values to the free end of the plate. The plate consisted of different materials: copper, aluminum, and steel. The PZT-5H was mounted at different positions on the plate. The harvested electrical energy was determined for each plate material, each piezoelectric material position, and each excitation displacement. The highest harvested energy was around 6 μJ. Second, forced vibration was tried, imposing an excitation amplitude of 0.5 mm at different excitation frequencies, from 10 to 50 Hz, to the fixed end of the plate. The plate was of different lengths. The highest harvested energy was around 540 μJ. Third, we showed that it is possible to further increase the harvested electrical energy by tuning the plate resonance to 50 Hz. The harvested energy was then around 1010 μJ. The obtained results allowed optimizing piezoelectric energy harvesting toward supplying low-power devices for different applications.
Indications of the In-Between in Works of W. Wabruschek-Blumenbach and F. Umlauft: A Case Study of Two Habsburg Ethnographers
Authors: Katschnig Gerhard
Published: December 2024

This article presents a case study of two Habsburg ethnographers, Wenzel Wabruschek-Blumenbach (1791–1847) and Friedrich Umlauft (1844–1923). It seeks to classify their works, Neuestes Gemälde der Oesterreichischen Monarchie (1832/1837) and Die Österreichisch-Ungarische Monarchie (1876/1897), within the context of nationalization tendencies during the long 19th century. The analysis focuses on identifying implicit and explicit indications of the "in-between," reflecting the complex interplay of identities, cultures, and national ideologies within the Habsburg Monarchy during this period.
Webtoon-Based Global Transmedia Storytelling: Bloodhounds
Authors: Jin Dal Yong
Published: December 2024

This article examines webtoon-based transnational transmedia by mapping out the ways in which webtoons become big-screen culture as a new trend in the Korean Wave phenomenon. With a case study of Bloodhounds (2023), which is one of the successful webtoon-based Netflix originals, it attempts to examine the major characteristics of webtoons turned into big-screen culture and the implications of webtoon-based transnational, transmedia storytelling. In so doing, it discusses a new cultural phenomenon in the global cultural sphere, which will shed light on our current debates on non-Western-based transmedia storytelling.
Internet of Climate Change Things (IoCCT) for Sustainable Agricultural Production
Authors: Sadiq Sanusi Mohammed , Singh Invinder Paul , Ahmad Muhammad Makarfi , Usman Ummulqulthum Ndatsu , Nazifi Idris Khalid
Published: December 2024

Due to their effects on the physical and biological components of the environment, the problems of environmental pollution and climate change have gained international attention. Precision agriculture is a solution that can be used to address the problem of low agricultural yields and losses caused by recent unanticipated and severe weather occurrences. The development of sensors for frost prevention, remote crop monitoring, fire hazard prevention, precise nutrient control in soilless greenhouse cultivation, solar energy autonomy, and intelligent feeding, shading, and lighting control to increase yields and lower operating costs are all results of technological advancements over time. Precision agriculture reduces environmental pollution and labor expenses while delivering higher yields at cheaper input prices during a period of rising food demand. The use of the most advanced computer and electronic technologies is anticipated to increase significantly in modern food production and precision agriculture.
Role of Sustainable Strategies Using Artifical Inteligence in Brain Tumour Detection and Treatment
Authors: Chillar Vivek , Gupta Swati , Vijarania Meenu , Agrawal Akshat , Soni Arpita
Published: December 2024

Brain tumor is the proliferation of aberrant brain cells, some of which may develop into cancer. To comprehend a brain tumor's mechanism better, it is crucial to identify and classify it. Since computer-assisted diagnosis (CAD), machine learning, and deep learning have advanced, the radiologist can now more accurately diagnose brain cancers. The paper's aim is to Assess and evaluate the application of artificial intelligence (AI) techniques in the early detection and diagnosis of brain tumors.This study paper seeks to provide a thorough review of how AI might improve the precision, effectiveness, and efficiency of brain tumor diagnosis via medical image analysis. Additionally, it aims to investigate the state of sustainable AI techniques, technology, and real-world applications in the healthcare industry, particularly in the context of brain tumor diagnosis. The study also aims to evaluate sustainable AI's potential future effects on patient outcomes, misdiagnosis rates, and the advancement of medical research in this crucial area of medicine.
Urban Flood Susceptibility in Khardah Municipality Using Machine Learning Technique
Authors: Goswami Asutosh , Mukherjee Sohini , Sen Suhel , Mondal Munmun
Published: December 2024

Waterlogging is an important in the urban areas. When there is heavy rainfall, some areas of the urban set up get blocked with water which brings about several environmental and social problems for the residents of the area. Khardah Municipality is not an exception in this regard. Certain wards of the study area often get waterlogged in and a situation of urban flood arises. The present research aims to prepare an urban flood susceptibility map of Khardah Municipality area through the application of geospatial technique and machine learning process. Analytical Hierarchy process has been used to assign criteria weights to the several conditioning factors. The research reveals that the southern, south eastern and northern parts of the study area are more prone to urban flood than the other areas. The model was found to be excellent with AUC value of 0.814 and damage to roads was turned out to be the most critical problem of the study area. Hence, it can be suggested that the urban flood map will aid in bringing about solution of problems of waterlogging in the study area.
Use of Geogrids for Stabilization of Soil
Authors: Meena Ram Vilas , Chittora Harsh Kumar , Beniwal Ankit Singh
Published: December 2024

The process of increasing the soil's engineering properties and making it more stable is known as soil stabilization. When the construction soil is not suitable for the intended use, soil stabilization is required. Stabilization, in its broadest sense, encompasses many similar processes, including compaction, pre-consolidation, drainage, and many others. However, the term “stabilization” is typically limited to actions that change the soil's physical makeup in order to enhance its properties. For the purpose of stabilizing a natural soil, a cementing substance or chemical is added or geosynthetic material is used. Permeability and compressibility of the soil mass in earth structures can be reduced and shear strength can also be increased by soil stabilization. It can also be used for enhancement of bearing capacity of foundation soil. Although, soil stabilization is mainly used for improvement of natural soil properties in highway and embankment construction.
Investigation of Pozzolanicity in Waste Excavation Soils From Cappadocia and Prospective Industrial Applications of Waste Earth
Authors: Ozata Serife , Ulukaya Serhan , Yuzer Nabi
Published: December 2024

This study assesses the pozzolanic activity of Cappadocia volcanic waste soils (CWs) using established methodologies and explores their potential for diverse applications. Targeted research aims to reduce visual pollution, and repurpose waste into economic resources and engineering materials, thereby safeguarding the cultural and natural heritage of the region. While Frattini test results confirm pozzolanic traits in most CWs, discrepancies arise in the strength activity index that necessitate further investigation. Compressive strength and electrical conductivity tests emerge as suitable alternatives, albeit with varying durations. Despite methodological variations, all CW samples exhibit pozzolanic properties, with CW4 showing the highest pozzolanicity. This study features the versatility of CWs, emphasizing their role and economic feasibility in construction, environmental engineering, agriculture, and industrial applications. Harnessing these materials promotes sustainable waste management and heritage conservation, offering a promising solution to the region's waste challenges.
Developing AI-Powered Prompts for First-Year Writing Courses
Authors: Pritts Nathan
Published: December 2024

This chapter explores integrating generative AI tools in first-year writing courses, proposing a dual framework for balanced AI integration and AI literacy development. It addresses the challenges that come from the widespread student use of AI tools and presents new approaches to assessment design. The dual framework can help educators create AI-powered assessments that enhance learning outcomes, promote critical thinking, and build student confidence. A case study on thesis development illustrates how AI can be used to teach foundational writing skills while developing AI literacy. The chapter argues for a transformation of writing instruction that prepares students by instilling both discipline specific skills and critical AI skills. This approach turns potential challenges into opportunities for deeper learning, and positions AI as a tool rather than a replacement for human skills. The chapter concludes by discussing the implications for educational practice, curriculum redesign, instructor training, and assessment methods.
Navegando Mental Health as a Hispanic/Latino Scholar in Higher Education
Authors: Londoño Juliana
Published: December 2024

Hispanic/Latino college students face unique mental health challenges that can hinder their academic success. While stress and anxiety are common among students, Latino scholars experience heightened levels of anxiety compared to their peers, influenced by cultural and systemic barriers. This chapter explores the specific mental health needs of Hispanic/Latino students, examining the impact of immigration status, cultural factors, and the limited access to resources. It also highlights community partnerships and innovative higher education models that can bridge these gaps. With a focus on the U.S. Surgeon General's recommendations on combating loneliness, the chapter provides strategies to enhance emotional wellness and academic achievement for Hispanic/Latino students.
Fostering Emotional Wellbeing in Multilingual Students With Dyslexia
Authors: Gómez-Fuentes Norma Igneri , Cummings Concepción Moncada , Sáenz Arturo Valadez
Published: December 2024

This chapter focuses on the emotional well-being of multilingual learners with dyslexia and their instructional and learning processes and challenges inside and outside school. Dyslexia is best evidenced in a child's reading ability. It adversely impacts a student's self-esteem and sense of well-being, approach to learning, and academic achievement. Identifying students' emotional and behavioral signs will aid educators and caregivers in providing appropriate interventions and support. The chapter focuses on the intercorrelation of feelings and behaviors and the development of student's self-concept and academic identity based on the difficulties experienced by multilingual children with dyslexia. Research-based strategies and techniques are discussed and explained to foster proactive learning environments while enhancing self-concept and inclusion. The chapter emphasizes that addressing the emotional aspects of dyslexia is as critical as providing academic support, making emotional well-being an essential component of educational experiences in multilingual students with dyslexia.
Latine Students' Mental Health
Authors: Perez Andrea , Cha Maritza
Published: December 2024

This chapter explores strategies for K-12 school staff to enhance the social-emotional well-being of Latine students, with a focus on the role of school counselors. As the number of Black, Indigenous, and People of Color (BIPOC) students in public schools continues to rise, Latine youth face significant mental health disparities (Merikangas et al., 2011). Research shows that Latine families encounter barriers to accessing youth mental health services (Malhatro et al., 2015). The chapter highlights the importance of using culturally sustaining practices that honor Latine students' cultural identities and emphasizes collaboration with families to ensure that school counselors and parents/guardians are collaborating and working together in the student's education and well-being. Additionally, it discusses how school counselors can utilize the Multi-Tiered, Multi-Domain System of Supports (MTMDSS) framework to provide universal and targeted interventions. This chapter will have considerations around mental health and Latine students and families.