bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pertinencia en el uso de las plataformas educativas prácticas de uso libre y su aplicación en el área de ciencias naturales en la educación media de instituciones educativas del sector oficial del departamento central
Authors: Chaparro Rivas Clarisse Noemi , S. Ramírez Juan Fernando , Martínez Insfrán Juan Lucas , Ruiz Toledo Elias Javier , Leiva Cabral Maria Ysabel 
Published: January 2023

La incursión de las TIC en el ámbito educativo conlleva procesos de discusiones y reflexiones pues cambia el paradigma de la enseñanza tradicional y apuesta hacia una innovación dentro del proceso de enseñanza, además implica un cambio en la planificación cotidiana pues la interacción activa docente-alumno genera un espacio de comunicación horizontal, lo cual redunda en, seguridad, compromiso, acción y resultados significativos en el proceso de aprendizaje de los alumnos.
La aplicación de recursos tecnológicos influyó en la percepción de los estudiantes de manera positiva, mediante la aplicación y generación de nuevas experiencias en las estrategias de enseñanza utilizadas en el aula a través de las TIC.
Esta investigación buscó determinar la pertinencia del uso de plataformas educativas de uso libre en la enseñanza de las Ciencias Naturales en entornos educativos de nivel medio de gestión oficial del Departamento Central, se pudo constatar que existen una gran variedad de recursos digitales, útiles para simular fenómenos complejos y replicar en un laboratorio de Ciencias Naturales, que posibiliten contrastar los resultados de un experimento real con uno simulado y evaluar el nivel de cumplimiento de los objetivos de aprendizaje, generar espacios virtuales para almacenar contenidos, organizar grupos de trabajos, crear actividades colaborativas.
Trabajo cooperativo y criterios de desempeño: un enfoque taxonómico para la práctica pedagógica inclusiva básica media - Machala
Authors: Campoverde Romero Sandra 
Published: January 2023

Este trabajo investigativo es de corte cuantitativo se fundamentó en la gestión de la educación, es un estudio descriptivo y propositivo, utilizando para el efecto métodos teóricos y empíricos, se aplicó los instrumentos de encuesta a toda la población, para lo cual se contó con 14 estudiantes y 13 docentes del subnivel de básica media. Los resultados demuestran que los docentes no ejecutan estrategia adecuadas para organizar actividades en el proceso enseñanza –aprendizaje, se ha observado escasa heterogeneidad en la sostenibilidad académica del grupo sujeto a investigación, una interdependencia inestable entre pares; y también, visible irresponsabilidad individual como persona y como miembro del equipo. Por lo que en esta producción académica trata del abordaje desde enfoque taxonómico del trabajo cooperativo y criterios de desempeño para la práctica pedagógica inclusiva.
Simplificación Administrativa y calidad de servicio en municipios locales y provinciales del Perú: Una revisión sistemática
Authors: Flores Yallico Carmen Pilar , Alberto Bueno Dr. Ramón Osorio, , Flores Yallico Gennma Lucila , Capcha Cóndor , John Carlos , Ubillús Farfán Segundo Williams 
Published: January 2023

En el presente estudio se tuvo como objetivo evaluar el proceso de Simplificación Administrativa y la calidad de servicio en municipios locales y provinciales del Perú. El estudio fue de enfoque cualitativo, de tipo básico y de diseño fenomenológico. Se trabajó con 10 artículos científicos recopilados de bases de datos indexadas, empleando la técnica del análisis documental. Los resultados evidenciaron que la simplificación administrativa en los municipios distritales y provinciales del Perú no ha sido del todo implementada y falta mejorar aspectos relacionados con las plataformas digitales, capacitación del personal, entre otros. Además, se percibió una calidad de servicio media por parte de los usuarios, por factores como la demora en los trámites, las instalaciones inadecuadas, el trato del personal con los usuarios. Respecto a las alternativas propuestas para mejorar la simplificación administrativa y la calidad de servicio se destacó la incorporación de tecnología de la información, y la creación de modelos y estrategias de gestión municipal local, la asistencia técnica y capacitación constante al personal municipal. Se concluye que es importante mejorar la simplificación administrativa si se desea mejorar la calidad de servicio en las municipalidades.
Проблемы и перспективы создания отечественного производства высоко- и сверхвысокопрочных армирующих материалов на основе сверхвысокомолекулярного полиэтилена
Authors: Шкуренко Светлана Ивановна , Галицын Владимир Петрович , Соколов Александр Викторович 
Published: January 2023

АО «ВНИИСВ», г. Тверь, совместно с Институтом катализа СО РАН им. Г. К. Борескова разработали технологии синтеза катализатора сверхвысокомолекулярного полиэтилена (СВМПЭ) и высоко- и сверхпрочные полиэтиленовые волокна с использованием методов гель-формования и последующего многократного ориентационного вытягивания сформованного волокна из СВМПЭ. Создана экспериментальная установка, наработаны и опробованы при изготовлении изделий опытные партии СВМПЭ нитей и показана их высокая эффективность. Определены промышленные площадки для размещения производства реакторного порошка СВМПЭ волоконной марки и высоко- и сверхпрочных полиэтиленовых волокон на его основе.
Получение волокнообразующего терсополимера акрилонитрила, метилакрилата и 2-акриламид-2-метилпропансульфокислоты в диметилформамиде и диметилсульфоксиде
Authors: Чикунская Вера Михайловна , Щербина Леонид Александрович , Будкуте Ирина Александровна , Устинов Константин Юрьевич , Бондаренко Владимир Александрович 
Published: January 2023

С целью выбора путей оптимизации технологического процесса получения волокнообразующего терсополимера (ВТП) акрилонитрила, метилакрилата и 2-акриламид-2-метилпропансульфокислоты в условиях варьирования содержания инициатора в реакционной смеси, проведен сравнительный анализ гомофазного свободно-радикального синтеза ВТП при температуре 75 °С в технологически приемлемых апротонных растворителях (диметилформамиде и диметилсульфоксиде). Показано влияние природы растворителя на динамику синтеза ВТП. Определены необходимые для практической реализации макрокинетические параметры рассматриваемых процессов.
Teachers’ Perceptions of Multiple Trade Unions in Promoting Professional Development among Teachers
Authors: Elias Tinus Range , Iramba Freddie 
Published: January 2023

The purpose of this study was to examine teachers’ perceptions of multiple trade unions in promoting professional development among teachers. The study objective specifically was; to examine teachers ‘perceptions of multiple trade unions in promoting professional development among Teachers. The study was in form of qualitative, it was a case study design involving ten public secondary school (A-J) in Dodoma city council. The population were Trade Unions’ Members, Trade Unions’ Leaders and Tanzania Registrar of Trade Unions. The sampling procedure used was purposive only, the sample size of 44 participants was employed. Two research instruments were used (focused group discussion and interview). Data was analyzed by using six stages of thematic analysis. The findings revealed teachers’ perceptions of multiple trade unions to promote professional development such as; reformation of the law of labour relation and education policy, collaboration between trade unions and the government in educational issues .Also to establish some programs such as trainings, workshops and seminars to promote teachers‘ professionalism. The government recommended to change the law of labour relation so as to reboots trade unions activities .Thus leaders of multiple trade unions were advised to re-examining the leadership and make restorations where necessary to make sure that unions’ activities are revived once again..
Metallicity–PAH Relation of MIR-selected Star-forming Galaxies in AKARI North Ecliptic Pole-wide Survey
Authors: Shim Hyunjin , Hwang Ho Seong , Jeong Woong-Seob , Toba Yoshiki , Kim Minjin , Kim Dohyeong , Song Hyunmi , Hashimoto Tetsuya , Nakagawa Takago , Nanni Ambra , Pearson William J. , Takagi Toshinobu 
Published: January 2023

Abstract
We investigate the variation in the mid-infrared spectral energy distributions of 373 low-redshift (z < 0.4) star-forming galaxies, which reflects a variety of polycyclic aromatic hydrocarbon (PAH) emission features. The relative strength of PAH emission is parameterized as q
PAH, which is defined as the mass fraction of PAH particles in the total dust mass. With the aid of continuous mid-infrared photometric data points covering 7–24 μm and far-infrared flux densities, q
PAH values are derived through spectral energy distribution fitting. The correlation between q
PAH and other physical properties of galaxies, i.e., gas-phase metallicity (

12
+
log
(
O

/

H
)

), stellar mass, and specific star-formation rate (sSFR) are explored. As in previous studies, q
PAH values of galaxies with high metallicity are found to be higher than those with low metallicity. The strength of PAH emission is also positively correlated with the stellar mass and negatively correlated with the sSFR. The correlation between q
PAH and each parameter still exists even after the other two parameters are fixed. In addition to the PAH strength, the application of metallicity-dependent gas-to-dust mass ratio appears to work well to estimate gas mass that matches the observed relationship between molecular gas and physical parameters. The result obtained will be used to calibrate the observed PAH luminosity-total infrared luminosity relation, based on the variation of MIR-FIR SED, which is used in the estimation of hidden star formation.
Changes of Magnetic Energy and Helicity in Solar Active Regions from Major Flares
Authors: Liu Yang , Welsch Brian T. , Valori Gherardo , K. Georgoulis Manolis , Guo Yang , Pariat Etienne , Park Sung-Hong , Thalmann Julia K. 
Published: January 2023

Abstract
Magnetic free energy powers solar flares and coronal mass ejections, and the buildup of magnetic helicity might play a role in the development of unstable structures that subsequently erupt. To better understand the roles of energy and helicity in large flares and eruptions, we have characterized the evolution of magnetic energy and helicity associated with 21 X-class flares from 2010 to 2017. Our sample includes both confined and eruptive events, with 6 and 15 in each category, respectively. Using the Helioseismic and Magnetic Imager vector magnetic field observations from several hours before to several hours after each event, we employ (a) the Differential Affine Velocity Estimator for Vector Magnetograms to determine the photospheric fluxes of energy and helicity, and (b) nonlinear force-free field extrapolations to estimate the coronal content of energy and helicity in source-region fields. Using superposed epoch analysis, we find, on average, the following: (1) decreases in both magnetic energy and helicity, in both photospheric fluxes and coronal content, that persist for a few hours after eruptions, but no clear changes, notably in relative helicity, for confined events; (2) significant increases in the twist of photospheric fields in eruptive events, with twist uncertainties too large in confined events to constrain twist changes (and lower overall twist in confined events); and (3) on longer timescales (event time +12 hr), replenishment of free magnetic energy and helicity content to near preevent levels for eruptive events. For eruptive events, magnetic helicity and free energy in coronal models clearly decrease after flares, with the amounts of decrease proportional to each region’s pre-flare content.
Deep Potential: Recovering the Gravitational Potential from a Snapshot of Phase Space
Authors: Green Gregory M. , Ting 丁 Yuan-Sen 源森 , Kamdar Harshil 
Published: January 2023

Abstract
One of the major goals of the field of Milky Way dynamics is to recover the gravitational potential field. Mapping the potential would allow us to determine the spatial distribution of matter—both baryonic and dark—throughout the galaxy. We present a novel method for determining the gravitational field from a snapshot of the phase-space positions of stars, based only on minimal physical assumptions, which makes use of recently developed tools from the field of deep learning. We first train a normalizing flow on a sample of observed six-dimensional phase-space coordinates of stars, obtaining a smooth, differentiable approximation of the distribution function. Using the collisionless Boltzmann equation, we then find the gravitational potential—represented by a feed-forward neural network—that renders this distribution function stationary. This method, which we term “Deep Potential,” is more flexible than previous parametric methods, which fit restricted classes of analytic models of the distribution function and potential to the data. We demonstrate Deep Potential on mock data sets and demonstrate its robustness under various nonideal conditions. Deep Potential is a promising approach to mapping the density of the Milky Way and other stellar systems, using rich data sets of stellar positions and kinematics now being provided by Gaia and ground-based spectroscopic surveys.
CO Emission, Molecular Gas, and Metallicity in Main-sequence Star-forming Galaxies at z ∼ 2.3*
Authors: Sanders Ryan L. , Shapley Alice E. , Jones Tucker , Shivaei Irene , Popping Gergö , Reddy Naveen A. , Davé Romeel , Price Sedona H. , Mobasher Bahram , Kriek Mariska , Coil Alison L. , Siana Brian 
Published: January 2023

Abstract
We present observations of CO(3−2) in 13 main-sequence z = 2.0–2.5 star-forming galaxies at

log
(

M

*

/

M

⊙

)
=
10.2
–
10.6

that span a wide range in metallicity (O/H) based on rest-optical spectroscopy. We find that

L

CO
(
3
−
2
)

′

/SFR decreases with decreasing metallicity, implying that the CO luminosity per unit gas mass is lower in low-metallicity galaxies at z ∼ 2. We constrain the CO-to-H2 conversion factor (α
CO) and find that α
CO inversely correlates with metallicity at z ∼ 2. We derive molecular gas masses (M
mol) and characterize the relations among M
*, SFR, M
mol, and metallicity. At z ∼ 2, M
mol increases and the molecular gas fraction (M
mol/M
*) decreases with increasing M
*, with a significant secondary dependence on SFR. Galaxies at z ∼ 2 lie on a near-linear molecular KS law that is well-described by a constant depletion time of 700 Myr. We find that the scatter about the mean SFR−M
*, O/H−M
*, and M
mol−M
* relations is correlated such that, at fixed M
*, z ∼ 2 galaxies with larger M
mol have higher SFR and lower O/H. We thus confirm the existence of a fundamental metallicity relation at z ∼ 2, where O/H is inversely correlated with both SFR and M
mol at fixed M
*. These results suggest that the scatter of the z ∼ 2 star-forming main sequence, mass–metallicity relation, and M
mol–M
* relation are primarily driven by stochastic variations in gas inflow rates. We place constraints on the mass loading of galactic outflows and perform a metal budget analysis, finding that massive z ∼ 2 star-forming galaxies retain only 30% of metals produced, implying that a large mass of metals resides in the circumgalactic medium.
Appetite–regulating hormones in rats with fructose-induced metabolic changes
Authors: Hadzhibozheva Petya , Pashova-Stoyanova Liliya , Tsokeva Zhivka , Ganeva Maria , Nancheva Krasimira , Ilieva Galina , Nanchev Velcho , Tolekova Anna , Georgiev Tsvetelin 
Published: January 2023

Objectives: The aim of this research is to examine the effects of fructose-drinking on the plasma levels of appetite-regulating hormones insulin, leptin and ghrelin in male and female rats.
Methods: Mature Wistar rats were divided as follows: two control groups - male (CM) and female (CF); two fructose-drinking groups - male (FDM) and female (FDF), received 15% fructose solution. The experiment lasted 11 weeks. At the end, insulin, leptin and ghrelin levels as well as lipid and glucose profile were assessed.
Results: Plasma concentrations of the examined hormones were elevated in fructose-drinking groups. However, in the FDM group only the leptin levels were significantly increased compared to the control. In the FDF group, all three appetite-regulating hormones showed the highest concentrations in comparison to the other groups.
Conclusion: Sex hormones may affect the appetite-regulation signals and could be a factor contributing to degree of metabolic changes caused by long-term fructose overconsumption.
Le Changement Emergent : un nouveau modèle d’Analyse Transactionnelle pour un dialogue efficace au travail
Authors: Laugeri Madeleine 
Published: January 2023

Cet article présente un modèle intitulé Changement Émergent, qui permet d’optimiser l’économie des Signes de Reconnaissance dans les environnements de travail et de formation. Il offre une vision globale de la dynamique des systèmes humains pour créer des conditions de communication et d’apprentissage optimales au sein d’un groupe en vue d’améliorer sa performance. Le modèle propose des contrats à trois niveaux : le Contrat de Vision, le Contrat de Mission et le Contrat de Coopération. Chacun fait référence à un type de dialogue spécifique à travers les trois frontières organisationnelles d’un groupe complexe : externe, majeure interne et mineure. Ces contrats permettent de positionner les membres du groupe et le leadership dans un partenariat OK/OK. Dans un contexte où les managers s’efforcent de développer la performance organisationnelle et où les employés cherchent à donner du sens à leur travail, le modèle de Changement Émergent favorise les relations humaines pour améliorer la performance collective par le biais d’une meilleure collaboration, d’une autonomie accrue et d’un réel confort émotionnel. 2
Des « discours » aux « chemins d’accès aux droits »
Authors: Vatron-Steiner Béatrice , Bickel Jean-François , Rossier Amélie 
Published: January 2023

Cet article analyse le processus de mise en organisation et en technologie du projet politique de dématérialisation de l’administration à l’échelon d’un territoire localisé : le canton de Fribourg en Suisse. Il vise à ouvrir la boîte noire du dispositif cyberadministratif fribourgeois et à décrire le monde qui le conçoit et le produit, son instrumentation technique et son inscription dans le dispositif national, en focalisant les deux champs du chômage et de l’insertion professionnelle d’un côté, de l’aide et de l’insertion sociale de l’autre. Cet article met ainsi en évidence une série de processus de nature à compliquer ou à faire obstacle à l’accès aux droits et aux prestations par le numérique et à invisibiliser ou à minorer ce problème. Ce faisant, il rend compte du décalage important qui prévaut entre l’accès aux droits censé être favorisé par le dispositif et vanté par les discours d’accompagnement, d’un côté, et la complexité effective de l’instrumentation cyberadministrative et des enjeux de cette complexité pour les usagers, de l’autre.
Numérisation des démarches administratives
Authors: Borelle Céline , Pharabod Anne-Sylvie , Peugeot Valérie 
Published: January 2023

Depuis les débuts de l’internet grand public, la question de l’accompagnement des usages numériques cristallise les débats entre des acteurs pluriels. Ancrés dans plusieurs secteurs d’intervention (travail social, éducation populaire, etc.), des professionnels en proposent différentes déclinaisons pratiques, sans que l’action publique ne coordonne l’ensemble. Avec l’accélération de la dématérialisation administrative, le fait que différents groupes professionnels soient impliqués dans une même tâche d’accompagnement aux démarches en ligne devient tangible. Lors du premier confinement lié à la pandémie de Covid-19 (printemps 2020), ils se mobilisent pour mettre en place le centre d’appels Solidarité Numérique. En s’appuyant sur une recherche articulant approche sociohistorique, entretiens auprès de professionnels engagés dans ce dispositif et observations de leurs échanges sur un fil de conversation numérique ( chat ), cet article montre la structuration croisée de deux groupes professionnels particulièrement impliqués : la médiation numérique et la médiation administrative. La médiation numérique, en quête de reconnaissance, voit sa stabilisation largement menacée, tandis que la médiation administrative, en construction, se trouve plutôt renforcée.
Evening Bats Captured in a Managed Wildlife Refuge Used Trees in a Human-Dominated Landscape as Maternity Roosts
Authors: Rogers Jacob A. , Parker Matthew C. , Fritts Sarah R. 
Published: January 2023

AbstractSimilar to many chiropteran species, pregnant and lactating evening bats Nycticeius humeralis form maternity colonies to bear and raise their pups. Although evening bat maternity roosts have been studied in other locations, knowledge gaps exist regarding maternity roost site selection on the Gulf Coast of Texas, United States; thus, our objective was to quantify maternity roost characteristics of evening bats in this region. We radiotracked 11 female and subadult evening bats to 9 roosts during June and July 2018 and 2019 captured in San Bernard National Wildlife Refuge (SBNWR). No transmittered bats roosted in SBNWR and instead all roosts were located 3.6–4.5 km from the same capture site, within an 81-ha residential area of a 5,496-ha city. Five of the nine roosts were located in tall, live, live oak trees Quercus virginiana and one roost was in a residential home. Colony size of bats occupying the roosts ranged from 16 to 500+ bats. All evening bats, including those on properties to which we were denied access, stayed in roosts for the full life of the transmitter (5–21 d) and no roost switching occurred. Although evening bats used SBNWR, potentially for foraging, results suggest trees in the residential area provided suitable maternity roost characteristics. A lack of roost switching may suggest a lack of available roost trees in SBNWR and residential areas or the selected roost trees were high quality. We recommend future studies increase sample sizes of evening bat roosts on the Gulf Coast of Texas, as well as assessing roost site selection of evening bats and monitoring bachelor colony and evening bat winter roost ecology.