bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of Current Farm Machinery Utilization and Farm Productivity in Hadiya Zone, Central Ethiopia
Authors: Yohannes Darebe , Purushottam Kolhe Kishor , Dananto Mihret , Mathewos Markos 
Published: October 2024

Using farm machinery to improve farming has several benefits, such as labor saving, the higher labor efficiency, and the more precise and timely operations. This study aimed to identify farmland eligible for mechanization in the Hadiya zone, central Ethiopia through formal interviews and key informant interviews in selected districts. With data from 2019 to 2023, the study used both quantitative and qualitative approaches to examine productivity and machinery usage status. According to the data, 16.98% and 20.81% of farmland was mechanized in 2019 and 2023, respectively. The productivity of cereal crops increased when they were mechanized as opposed to not. According to the mechanization index measurement result, Shashogo had the highest mechanical power (30.8%), and Misrak Badawacho had the lowest (11.88%); this showed that human work requires a large energy input per hectare for Misrak Badawacho district. The article estimated differences in productivity between mechanized and non-mechanized plots for different crops. They amounted to 34.80%, 47.85%, 29.41%, and 46.58% for respective barley, teff, wheat, and maize. There were variations of horsepower per hectare among districts in the Hadiya zone due to landscape orientation and access to the existing resources in Lemo and Misrak Badawacho districts horsepower/hectare was 0.15 and 0.20, respectively. The result showed that out of the total cultivable land in the Hadiya zone, about 146,551 ha of land is eligible for mechanization in terms of both farm production and machinery utilization. The Central regional government is advised to support the appropriate use of agricultural equipment that is affordable for subsistence farmers through rental or credit terms; to apply the cluster farming system for small landholding in an appropriate manner for each district in the Hadiya zone; and to use farm machinery, as the study found a significant relationship between farm machinery and farm productivity: the low farm productivity results from low machinery utilization, which is caused by the government, lack of focus on farmer support, environmental sustainability, and farm production declines despite machinery utilization in central Ethiopia, Hadiya zone, and to use farm machinery, as the study found a significant relationship between farm machinery and farm productivity.
Мотиваційний компонент як важливий фактор підвищення інтересу учнів до предмета «Образотворче мистецтво» в закладах загальної середньої освіти
Authors: Мервінська Наталія , Виноградова Наталія 
Published: October 2024

У статті окреслено способи мотивації навчальної діяльності учнів закладів загальної середньої освіти на уроках образотворчого мистецтва. Представлено приклади використання інтерактивних методів на всіх етапах уроку та продемонстровано прийоми впровадження діяльнісного підходу в навчанні образотворчому мистецтву. Акцентовано увагу на важливості та дієвості мотиваційного компонента уроку з метою підвищення інтересу школярів до навчального предмета. Обґрунтовано необхідність використання вчителем таких форм і методів роботи, що формують емоційний інтелект та є основою творчої діяльності. Зауважено, що варіативність завдань, диференційований та індивідуальний підходи сприяють підвищенню рівня навчальних досягнень учнів. Окреслено шляхи формування зовнішньої та внутрішньої мотивації у процесі навчання образотворчому мистецтву в закладі загальної середньої освіти. Схарактеризовано особливості сприйняття навчального матеріалу учнями. Наголошено на важливості створення ситуації успіху, організації позитивної атмосфери на уроці. Описано використання сучасних методів та прийомів, які, окрім навичок образотворчої діяльності, сприяють розвитку мислення, мовлення, уваги, пам’яті та стимулюють пошукову діяльність учнів. Доведено, що сучасний урок – це спосіб взаємодії вчителя і здобувачів освіти, котрий базується на активній діяльності обох сторін освітнього процесу з метою досягнення очікуваних результатів навчання та виховання культурно освіченої особистості.
Incidencia de complicaciones obstétricas del parto en gestantes atendidas en Hospital General Rodríguez Zambrano
Authors: Novoa Mero Dr. Jhon Erick , Zambrano Andrade Dr. Luis Fernando , Sánchez Rodríguez Dra. Johanna Mabel , Zambrano Santos. Ph.D Dr Roberth Olmedo 
Published: October 2024

Se define como complicaciones obstétricas a las disrupciones y trastornos que pueden presentarse durante el embarazo, parto y puerperio. La mayoría de las muertes maternas son causadas por complicaciones prevenibles, gracias a una correcta identificación y tratamiento de la misma. Identificar la frecuencia de complicaciones obstétricas y así establecer futuras propuestas para trabajar en su prevención y tratamiento. Se realizó un estudio descriptivo retrospectivo de corte transversal en el Hospital General Rafael Rodríguez Zambrano, en el cual se procedió a la revisión de historias clínicas e identificación de las diferentes complicaciones y características obstétricas correspondientes. De las 119 pacientes que se incluyó en el estudio, las complicaciones obstétricas que se presentaron con mayor frecuencia son: rotura prematura de membrana con 58 pacientes (48.73%) y preeclampsia severa con 38 pacientes (21.00%); evidenciándose una mayor incidencia de rotura prematura de membrana en gestantes multíparas y mayor desarrollo de preeclampsia severa en pacientes nulíparas. Se pudo identificar una relación entre la presencia de complicaciones obstétricas y controles prenatales insuficientes, representado por un total de 77 pacientes (64.70%) que presentaron 4 o menos controles prenatales durante la gestación, además de un alto porcentaje de gestantes adolescentes 31 pacientes (26.05%). La incidencia de cesárea se vio aumentada por la presencia de complicaciones obstétricas, sobre todo preeclampsia severa. Lo anterior nos pone en manifiesto la importancia de conocer cuáles son las principales complicaciones obstétricas, para trabajar en su prevención y tratamiento, disminuyendo la morbimortalidad materna, perinatal y neonatal.
Aprendizajes relacionados a las capacidades especiales en estudiantes de educación básica elemental
Authors: Moreira Pico Marcos Alberto , Intriago Lucas Wendy Tatiana 
Published: October 2024

Este trabajo de investigación acción tuvo como objetivo analizar la importancia de los aprendizajes relacionados a las capacidades especiales en la Educación General Elemental pues el reconocimiento de alumnos con necesidades educativas especiales (NEE) es imperativo, debido que en nuestro sistema educativo encontramos a gran escala un sin número de NEE, el problema es no contar con el conocimiento, herramientas o recursos para reconocerlas y poder actuar o tratarlas de manera directa dentro del salón de clase, esta falta de acción por parte del docente se debe a la poca información de estas necesidades dentro del currículo educativo, aunque sabemos que el currículo es flexible en estos casos deberían establecer directrices para su debido trabajo, ya que a causa del desconocimiento de cómo tratar estas diferentes capacidades de los estudiantes tienen como efecto problemas de aprendizaje que genera un atraso o rezago académico que es muy difícil de suplir a medida que pasa el tiempo, mediante este estudio de investigación acción se logró reconocer las principales problemáticas del nivel elemental de la escuela “Portete de tarqui” a través de la aplicación de encuestas a los docentes y alumnos de este subnivel, este muestreo evidenció NEE asociada y no asociada a una discapacidad intelectual
Autos eléctricos para el medio ambiente
Authors: Moreira Sanchez Eric Eduardo , Suasti Alcivar Kenny Orlando 
Published: October 2024

Los autos eléctricos es la nueva generación para el futuro usando un mejor rendimiento en corriente que combustible cada auto tiene dos baterías que se encargan en que el auto desarrolle sus funciones específicas para el usuario que sea propietario los autos eléctricos tienes unas ventajas muy importante es que son recargables las baterías para el usuario las recargables y su duración es por mínimo 7 horas así el usuario pueda realizar por el otro lado en manteniendo se gasta menos por que llevas un sistema eléctrico que facilita haya un tipo de problema que este dañado para el usuario gracia esta novación el auto tendrá mejor estabilidad y mejor desarrollo en peso por la comodidad que le ofrece el primer auto eléctrico salió al principio del siglo xx por la caída del petróleo tuvieron que utilizar otros mecanismo en vez de gasolina electricidad pero no fue muy rentable por que la batería era muy pequeña y se agotaba rápido no duraba ni 30 minutos los usuario no le gusto el funciona miento así que volvieron después de 15 años los autos gasolina con mejor uso pero algunos autos eléctricos de esa época alcanzaba hasta 100 km por hora Camile Jenatzy 29 DE abril 1889 desde entonces por la inseguridad y por mal uso los usuario dejaron de úsalos con una mejor utilidad con estos vehículos que después serán el futuro para el planeta .El objetivo del investigación es para saber el uso del auto y sus funciones y seguridad y el medio ambiente que daño causa por este objeto que porque va cambia el futuro en su totalidad.
The Radius of the High-mass Pulsar PSR J0740+6620 with 3.6 yr of NICER Data
Authors: Salmi Tuomo , Choudhury Devarshi , Kini Yves , Riley Thomas E. , Vinciguerra Serena , Watts Anna L. , Wolff Michael T. , Arzoumanian Zaven , Bogdanov Slavko , Chakrabarty Deepto , Gendreau Keith , Guillot Sebastien , Ho Wynn C. G. , Huppenkothen Daniela , Ludlam Renee M. , Morsink Sharon M. , Ray Paul S. 
Published: October 2024

Abstract
We report an updated analysis of the radius, mass, and heated surface regions of the massive pulsar PSR J0740+6620 using Neutron Star Interior Composition Explorer (NICER) data from 2018 September 21 to 2022 April 21, a substantial increase in data set size compared to previous analyses. Using a tight mass prior from radio-timing measurements and jointly modeling the new NICER data with XMM-Newton data, the inferred equatorial radius and gravitational mass are

12.49

−
0.88

+
1.28

km and

2.073

−
0.069

+
0.069

M
⊙, respectively, each reported as the posterior credible interval bounded by the 16% and 84% quantiles, with an estimated systematic error ≲ 0.1 km. This result was obtained using the best computationally feasible sampler settings providing a strong radius lower limit but a slightly more uncertain radius upper limit. The inferred radius interval is also close to the

R
=

12.76

−
1.02

+
1.49

km obtained by Dittmann et al., when they require the radius to be less than 16 km as we do. The results continue to disfavor very soft equations of state for dense matter, with R < 11.15 km for this high-mass pulsar excluded at the 95% probability. The results do not depend significantly on the assumed cross-calibration uncertainty between NICER and XMM-Newton. Using simulated data that resemble the actual observations, we also show that our pipeline is capable of recovering parameters for the inferred models reported in this paper.
Radio Afterglows from Tidal Disruption Events: An Unbiased Sample from ASKAP RACS
Authors: Anumarlapudi Akash , Dobie Dougal , Kaplan David L. , Murphy Tara , Horesh Assaf , Lenc Emil , Driessen Laura , Duchesne Stefan W. , Dykaar Hannah , Gaensler B. M. , Galvin Timothy J. , Grundy Joe , Heald George , Hotan Aidan W. , Huynh Minh , Leung James K. , McConnell David , Moss Vanessa A. , Pritchard Joshua , Raja Wasim , Rose Kovi , Sivakoff Gregory , Wang Yuanming , Wang Ziteng , Wieringa Mark H. , Whiting Matthew T. 
Published: October 2024

Abstract
Late-time (∼a year) radio follow-up of optically discovered tidal disruption events (TDEs) is increasingly resulting in detections at radio wavelengths, and there is growing evidence for this late-time radio activity to be common to the broad class of subrelativistic TDEs. Detailed studies of some of these TDEs at radio wavelengths are also challenging the existing models for radio emission. Using all-sky multiepoch data from the Australian Square Kilometre Array Pathfinder (ASKAP), taken as a part of the Rapid ASKAP Continuum Survey (RACS), we searched for radio counterparts to a sample of optically discovered TDEs. We detected late-time emission at RACS frequencies (742–1032 MHz) in five TDEs, reporting the independent discovery of radio emission from TDE AT 2019ahk and extending the time baseline out to almost 3000 days for some events. Overall, we find that at least

22

−
11

+
15

%

of the population of optically discovered TDEs has detectable radio emission in the RACS survey, while also noting that the true fraction can be higher given the limited cadence (two epochs separated by ∼3 yr) of the survey. Finally, we project that the ongoing higher-cadence (∼2 months) ASKAP Variable and Slow Transients survey can detect ∼20 TDEs in its operational span (4 yr), given the current rate from optical surveys.
Photometric White Dwarf Rotation
Authors: Oliveira da Rosa Gabriela , Kepler S. O. , Soethe L. T. T. , Romero Alejandra D. , Bell Keaton J. 
Published: October 2024

Abstract
We present a census of photometrically detected rotation periods for white dwarf (WD) stars. We analyzed the light curves of 9285 WD stars observed by the Transiting Exoplanet Survey Satellite up to Sector 69. Using Fourier transform analyses and the TESS_localize software, we detected variability periods for 318 WD stars. The 115 high-probability likely single WDs in our sample have a median rotational period of 3.9 hr and a median absolute deviation of 3.5 hr. Our distribution is significantly different from the distribution of the rotational period from asteroseismology, which exhibits a longer median period of 24.2 hr and a median absolute deviation of 12.1 hr. In addition, we reported nonpulsating periods for three known pulsating WDs with rotational periods previously determined by asteroseismology: NGC 1501, TIC 7675859, and G226-29. We also calculated evolutionary models including six angular momentum transfer mechanisms from the literature throughout evolution in an attempt to reproduce our findings. Our models indicate that the temperature–period relation of most observational data is best fitted by models with low metallicity, probably indicating problems with the computations of angular momentum loss during the high-mass-loss phase. Our models also generate internal magnetic fields through the Tayler–Spruit dynamo.
Characterization of Monosubstituted Benzene Ices
Authors: Piacentino Elettra L. , Balkanski Aurelia , Rajappan Mahesh , Öberg Karin I. 
Published: October 2024

Abstract
Aromatic structures are fundamental for key biological molecules such as RNA and metabolites and the abundances of aromatic molecules on young planets are therefore of high interest. Recent detections of benzonitrile and other aromatic compounds in interstellar clouds and comets have revealed a rich aromatic astrochemistry. In the cold phases of star and planet formation, most of these aromatic molecules are likely to reside in icy grain mantles, where they could be observed through IR spectroscopy. We present laboratory IR spectra of benzene and four monosubstituted benzene molecules—toluene, phenol, benzonitrile, and benzaldehyde—to determine their IR ice absorbances in undiluted aromatic ices, and in mixtures with water and CO. We also characterize the aromatic ice desorption rates, and extract binding energies and respective pre-exponential factors using temperature-programmed desorption experiments. We use these to predict at which protostellar and protoplanetary disk temperatures these molecules sublimate into the gas phase. We find that benzene and monosubstituted benzene derivatives are low-volatility with binding energies in the 5220–8390 K (43–70 kJ mol−1) range, which suggests that most of the chemistry of benzene and of functionalized aromatic molecules is to be expected to occur in the ice phase during star and planet formation.
Characterizing the Rapid Hydrogen Disappearance in SN 2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties
Authors: Dong 董 Yize 一泽 , Valenti Stefano , Ashall Chris , Williamson Marc , Sand David J. , Van Dyk Schuyler D. , Filippenko Alexei V. , Jha Saurabh W. , Lundquist Michael , Modjaz Maryam , Andrews Jennifer E. , Jencson Jacob E. , Hosseinzadeh Griffin , Pearson Jeniveve , Kwok Lindsey A. , Boland Teresa , Hsiao Eric Y. , Smith Nathan , Elias-Rosa Nancy , Srivastav Shubham , Smartt Stephen , Fulton Michael , Zheng WeiKang , Brink Thomas G. , Shahbandeh Melissa , Bostroem K. Azalee , Hoang Emily , Janzen Daryl , Mehta Darshana , Meza Nicolas , Shrestha Manisha , Wyatt Samuel , Auchettl Katie , Burns Christopher R. , Farah Joseph , Galbany Lluís , Padilla Gonzalez Estefania , Haislip Joshua , Hinkle Jason T. , Howell D. Andrew , De Jaeger Thomas , Kouprianov Vladimir , Kumar Sahana , Lu Jing , McCully Curtis , Moran Shane , Morrell Nidia , Newsome Megan , Pellegrino Craig , Polin Abigail , Reichart Daniel E. , Shappee B. J. , Stritzinger Maximilian D. , Terreran Giacomo , Tucker M. A. 
Published: October 2024

Abstract
We present optical and near-infrared (NIR) observations of SN 2022crv, a stripped-envelope supernova in NGC 3054, discovered within 12 hr of explosion by the Distance Less Than 40 Mpc Survey. We suggest that SN 2022crv is a transitional object on the continuum between Type Ib supernovae (SNe Ib) and Type IIb supernovae (SNe IIb). A high-velocity hydrogen feature (∼ −20,000 to −16,000 km s−1) was conspicuous in SN 2022crv at early phases, and then quickly disappeared. We find that a hydrogen envelope of ∼10−3
M
⊙ can reproduce the observed behavior of the hydrogen feature. The lack of early envelope cooling emission implies that SN 2022crv had a compact progenitor with an extremely low amount of hydrogen. A nebular spectral analysis shows that SN 2022crv is consistent with the explosion of a He star with a final mass of ∼4.5–5.6 M
⊙ that evolved from a ∼16 to 22 M
⊙ zero-age main-sequence star in a binary system with ∼1.0–1.7 M
⊙ of oxygen finally synthesized in the core. In order to retain such a small amount of hydrogen, the initial orbital separation of the binary system is likely larger than ∼1000 R
⊙. The NIR spectra of SN 2022crv show a unique absorption feature on the blue side of the He i line at ∼1.005 μm. This is the first time such a feature has been observed in SNe Ib/IIb, and it could be due to Sr II. Further detailed modeling of SN 2022crv can shed light on the progenitor and the origin of the mysterious absorption feature in the NIR.
Superluminal Proper Motion in the X-Ray Jet of Centaurus A
Authors: Bogensberger David , Miller Jon M , Mushotzky Richard , Brandt W. N. , Kammoun Elias , Zoghbi Abderahmen , Behar Ehud 
Published: October 2024

Abstract
The structure of the jet in Cen A is likely better revealed in X-rays than in the radio band, which is usually used to investigate jet proper motions. In this paper, we analyze Chandra Advanced CCD Imaging Spectrometer observations of Cen A from 2000 to 2022 and develop an algorithm for systematically fitting the proper motions of its X-ray jet knots. Most of the knots had an apparent proper motion below the detection limit. However, one knot at a transverse distance of 520 pc had an apparent superluminal proper motion of 2.7 ± 0.4c. This constrains the inclination of the jet to be i < 41° ± 6° and the velocity of this knot to be β > 0.94 ± 0.02. This agrees well with the inclination measured in the inner jet by the Event Horizon Telescope but contradicts previous estimates based on jet and counterjet brightness. It also disagrees with the proper motion of the corresponding radio knot, of 0.8 ± 0.1c, which further indicates that the X-ray and radio bands trace distinct structures in the jet. There are four prominent X-ray jet knots closer to the nucleus, but only one of these is inconsistent with being stationary. A few jet knots also have a significant proper-motion component in the nonradial direction. This component is typically larger closer to the center of the jet. We also detect brightness and morphology variations at a transverse distance of 100 pc from the nucleus.
Constraints on the Physical Origin of Large Cavities in Transition Disks from Multiwavelength Dust Continuum Emission
Authors: Sierra Anibal , Pérez Laura M. , Sotomayor Benjamín , Benisty Myriam , Chandler Claire J. , Andrews Sean , Carpenter John , Henning Thomas , Testi Leonardo , Ricci Luca , Wilner David 
Published: October 2024

Abstract
The physical origin of the large cavities observed in transition disks is to date still unclear. Different physical mechanisms (e.g., a companion, dead zones, enhanced grain growth) produce disk cavities of different depth, and the expected spatial distribution of gas and solids in each mechanism is not the same. In this work, we analyze the multiwavelength interferometric visibilities of dust continuum observations obtained with Atacama Large Millimeter/submillimeter Array and Very Large Array for six transition disks: CQTau, UXTau A, LkCa15, RXJ1615, SR24S, and DMTau, and calculate brightness radial profiles, where diverse emission morphology is revealed at different wavelengths. The multiwavelength data are used to model the spectral energy distribution and compute constraints on the radial profile of the dust surface density, maximum grain size, and dust temperature in each disk. They are compared with the observational signatures expected from various physical mechanisms responsible for disk cavities. The observational signatures suggest that the cavities observed in the disks around UXTau A, LkCa15, and RXJ1615 could potentially originate from a dust trap created by a companion. Conversely, in the disks around CQTau, SR24S, DMTau, the origin of the cavity remains unclear, although it is compatible with a pressure bump and grain growth within the cavity.
Polar Neptunes Are Stable to Tides
Authors: Louden Emma M. , Millholland Sarah C. 
Published: October 2024

Abstract
There is an intriguing and growing population of Neptune-sized planets with stellar obliquities near ∼90°. One previously proposed formation pathway is a disk-driven resonance, which can take place at the end stages of planet formation in a system containing an inner Neptune, outer cold Jupiter, and protoplanetary disk. This mechanism occurs within the first ∼10 Myr, but most of the polar Neptunes we see today are ∼Gyr old. Up until now, there has not been an extensive analysis of whether the polar orbits are stable over ∼Gyr timescales. Tidal realignment mechanisms are known to operate in other systems, and if they are active here, this would cause theoretical tension with a primordial misalignment story. In this paper, we explore the effects of tidal evolution on the disk-driven resonance theory. We use both N-body and secular simulations to study tidal effects on both the initial resonant encounter and long-term evolution. We find that the polar orbits are remarkably stable on ∼Gyr timescales. Inclination damping does not occur for the polar cases, although we do identify subpolar cases where it is important. We consider two case study polar Neptunes, WASP-107 b and HAT-P-11 b, and study them in the context of this theory, finding consistency with present-day properties if their tidal quality factors are Q ≳ 104 and Q ≳ 105, respectively.