bluuebunny/crossref_metadata_2025_split huggingface dataset:
Guía de estrategias activas de enseñanza-aprendizaje para desarrollar competencias transversales en alumnos auditores
Authors: Blanco Alfaro Cristian , Cortés Iturrieta Patricia , Hernández Venegas Alberto 
Published: January 2020

El paradigma educativo durante este último siglo ha cambiado considerablemente, se ha transitado de un modelo centrado en la enseñanza, a un modelo centrado en el aprendizaje. Autores como Tobón (2005), enfatizan la importancia de potenciar tanto el desarrollo de competencias técnicas como transversales a la hora de lograr la conformación del ser humano holista que la sociedad actual demanda.
Es bajo este contexto, que surge el presente proyecto, el cual tiene como finalidad potenciar el desarrollo de las competencias transversales de Trabajo en Equipo, Autonomía, Lectura Comprensiva y Razonamiento Lógico Matemático, en los estudiantes del VIII nivel de la Carrera de Auditoría de la Universidad de La Serena, valiéndose para esto, de la elaboración e implementación de una guía de estrategias activas de enseñanza-aprendizaje. Pues la valoración del desarrollo de estas competencias en términos medios por parte de los alumnos y de los agentes estratégicos vinculados con estos, constituye uno de los focos problemáticos presentes.
La metodología de este proyecto, se sustenta en un paradigma socio-crítico, con un enfoque cualitativo y un diseño metodológico de investigación-acción, siendo la aplicación de la entrevista, el focus groups y la encuesta, bases tanto para el diagnóstico del estudio, como para evaluar el impacto de la implementación de la guía.
Resultado de esta implementación en los estudiantes a través de las asignaturas del VIII nivel, se evidencia una mejora en el desarrollo de las competencias transversales precisadas en el perfil de egreso de esta carrera. Destacándose, el desarrollo de las competencias de Trabajo en Equipo y Autonomía, contando estas con una aprobación de más del 60%, y observándose mejoras en la Lectura Comprensiva y el Razonamiento Lógico Matemático, superando el 50% más uno.
A Language and Cultural Practicum Course in Nanjing: Maximizing the Students’ Use of Chinese
Authors: Foster Paul B. 
Published: January 2020

This paper examines an experience-based language course operating in the field during an intensive language training program in Nanjing, China, during the summer of 1999. The objectives are to report on the design success of our “language and cultural practicum” course, and thereby address best practices and challenges of experience-based language learning. In addition to four hours of classroom instruction each morning, students participated in an afternoon practicum course in which they were required to go off campus and interact with the Chinese community at large and gather specific information for specific assignments. Assets of the practicum course were its flexibility of design, allowing for student self-design of exercises, efficiency in tracking the students’ whereabouts and structuring of their time, and production of an overall synergy of language learning by consciously exercising spoken skills in the field, reinforced with written practice in a daily journal write-up, capped off by a daily presentation during the evening debriefing class.
Water Content and Ash Content of Corn Cob Ammoniation Fermentation Using Commercial Starters (M21 Decomposer)
Authors: Fitria Restuti , Candrasari Dewi Puspita , Hindratiningrum Novita 
Published: January 2020

Janggel jagung merupakan limbah pertanian yang dapat dimanfaatkan sebagai pakan ternak khususnya ternak ruminansia. Janggel jagung mengandung selulosa cukup tinggi namun kecernaan rendah akibat adanya lignin yang tinggi. Oleh karena itu janggel jagung harus diolah terlebih dahulu untuk meningkatkan kualitasnya sebagai bahan pakan salah satunya dengan teknologi amoniasi fermentasi (amofer). Tujuan penelitian ini untuk mengevaluasi level penambahan M21 Dekomposer terhadap kualitas nutrisi amofer janggel jagung. Penelitian dilaksanakan menggunakan Rancangan Acak Lengkap (RAL). Perlakuan dalam penelitian ini adalah penambahan M21 Dekomposer atau aras starter komersial (0; 0,02 ; 0,04; 0,06 % dari total larutan formula). Variabel yang diamati meliputi kadar air dan kadar abu. Data yang diperoleh kemudian diolah menggunakan Analisis Variansi (ANAVA) dan dilanjutkan dengan Uji Beda Nyata Jujur (BNJ). Hasil diketahui bahwa perlakuan berpengaruh sangat nyata (P < 0,01) baik terhadap kadar air dan kadar abu janggel jagung. Kadar air tertinggi (33,74 ± 0,59%) diperoleh pada perlakuan penambahan M21 Dekomposer sebanyak 0,02 %. Sedangkan kadar abu pada janggel jagung yang diamoniasi fermentasi dengan penambahan M21 Dekomposer lebih rendah (1,89 ± 0,14%) dibanding janggel jagung tanpa amofer. Kadar air yang meningkat disebabkan oleh adanya hasil dari proses fermentasi dan kadar abu yang lebih rendah pada janggel jagung yang diamofer menunjukan kadar bahan organik yang lebih tinggi.Kata Kunci: Janggel Jagung, Amofer, Kadar Air, Kadar Abu.
Hubungan Paritas Dan Umur Terhadap Kejadian Plasenta Previa Di RSUD Syekh Yusuf Gowa Tahun 2018
Authors: Hartuti Noviyani 
Published: January 2020

Tujuan dilakukanya penelitian ini adalah untuk mengetahui hubungan antara paritas dan umur terhadap kejadian plasenta previa di RSUD Syekh Yusuf Gowa Tahun 2018. Penelitian ini menggunakan metode penelitian analitik dengan melakukan pendekatan Cross Sectional Study dengan cara sekunder yaitu data yang di ambil dari Rekam Medik RSUD Syekh Yusuf Gowa untuk mengetahui hubungan antara paritas dan umur terhadap kejadian plasenta previa di RSUD Syekh Yusuf Gowa dengan jumlah populasi sebanyak 204 orang dan jumlah sampel sebanyak 115 orang dengan menggunakan teknik Random Sampling. Dari hasil uji statistik dengan menggunakan uji Chi-Square (Yate Corrections) diperoleh untuk variabel umur ibu nilai P = 0,015< α = 0,05 artinya ada hubungan antara umur dengan kejadian plasenta previa di RSUD Syekh Yususf Gowa Tahun 2018. Untuk variabel Paritas ibu nilai P = 0,008< α = 0,05 artinya ada hubungan antara paritas dengan kejadian plasenta presia di RSUD Syekh Yusuf Gowa Tahun 2018. Kesimpulan yang di dapat dari dua variable yaitu paritas dan umur adalah bahwa ada hubungan antara paritas dengan kejadian plasenta previa dan ada hubungan antara umur dengan plasenta previa di RSUD Syekh Yusuf Gowa Tahun 2018. Saran dari penelitian ini diharapkan bagi ibu untuk hamil di usia reproduktif serta melakukan pemeriksaan kehamilan sedini mungkin untuk mengetahui berbagai faktor risiko yang dapat membahayakan bagi kehamilan dan janinya.
Hubungan Umur Dan Paritas Terhadap Kejadian Anemia Pada Ibu Hamil Di RSKDIA Siti Fatimah Makassar Tahun 2018
Authors: Irwan Hadriani , Rahmat Basuki 
Published: January 2020

Berdasarkan data yang diperoleh dari Rekam Medik RSKDIA Siti Fatimah Makassar pada tahun pada tahun 2016 terdapat 27 ibu hamil (2,15%) yang mengalami anemia dari 1.254 ibu hamil yang memeriksakan kehamilannya. Pada 2017 terdapat 34 ibu hamil (2,70%) yang mengalami anemia dari 1.256 ibu hamil yang memeiksakan kehamilannya. Periode Januari sampai Juni 2018 terdapat 13 ibu hamil (3,28%) yang mengalami anemia dari 396 ibu hamil yang memeriksakan kehamilannya. Tujuan dilakukannya penelitian ini adalah untuk mengetahui hubungan umur dan paritas dengan kejadian anemia pada kehamilan di RSKDIA Siti Fatimah Makassar tahun 2018. Penelitian ini menggunakan metode penelitian analitik dengan melakukan pendekatan Cross Sectional Study untuk mengetahui hubungan umur dan paritas dengan kejadian anemia pada kehamilan di RSKDIA Siti Fatimah Makassar dengan jumlah populasi sebanyak 396 orang dan Sampel pada penelitian ini adalah semua ibu hamil yang datang berkunjung di RSKDIA Siti Fatimah Makassar, priode Januari sampai dengan Juni tahun 2018 sebanyak 396 orang dengan menggunakan teknik Total Sampling. Dari hasil uji statistic dengan menggunakan uji Chi-Square diperoleh nilai ρ (0,000) < ɑ (0,05), maka bisa diambil kesimpulan bahwa pada penelitian hubungan antara umur ibu dengan kejadian anemia menolak H0 dan menerima Ha, jadi kesimpulannya adalah terdapat hubungan antara umur ibu terhadap kejadian anemia di RSKDIA Siti Fatimah Makassar.Dari hasil uji statistic dengan menggunakan uji Chi-Square (pearson chi-square) diperoleh untuk variabel paritas ibu nilai ρ (0,000) < ɑ (0,05), artinya hubungan antara paritas ibu dengan kejadian plasenta previa menolak H0 dan menerima Ha, jadi kesimpulannya adalah terdapat hubungan antara paritas ibu terhadap kejadian anemia di RSKDIA Siti Fatimah Makasaar.Kesimpulan dari dua variabel yaitu umur dan paritas, keduanya berhubungan dengan kejadian anemia pada kehamilan di RSKDIA Siti Fatimah Makassar 2018.
Stellar Flares from the First TESS Data Release: Exploring a New Sample of M Dwarfs
Authors: Günther Maximilian N. , Zhan Zhuchang , Seager Sara , Rimmer Paul B. , Ranjan Sukrit , Stassun Keivan G. , Oelkers Ryan J. , Daylan Tansu , Newton Elisabeth , Kristiansen Martti H. , Olah Katalin , Gillen Edward , Rappaport Saul , Ricker George R. , Vanderspek Roland K. , Latham David W. , Winn Joshua N. , Jenkins Jon M. , Glidden Ana , Fausnaugh Michael , Levine Alan M. , Dittmann Jason A. , Quinn Samuel N. , Krishnamurthy Akshata , Ting Eric B. 
Published: January 2020

Abstract
We perform a study of stellar flares for the 24,809 stars observed with 2 minute cadence during the first two months of the TESS mission. Flares may erode exoplanets’ atmospheres and impact their habitability, but might also trigger the genesis of life around small stars. TESS provides a new sample of bright dwarf stars in our galactic neighborhood, collecting data for thousands of M dwarfs that might host habitable exoplanets. Here, we use an automated search for flares accompanied by visual inspection. Then, our public allesfitter code robustly selects the appropriate model for potentially complex flares via Bayesian evidence. We identify 1228 flaring stars, 673 of which are M dwarfs. Among 8695 flares in total, the largest superflare increased the stellar brightness by a factor of 16.1. Bolometric flare energies range from 1031.0 to 1036.9 erg, with a median of 1033.1 erg. Furthermore, we study the flare rate and energy as a function of stellar type and rotation period. We solidify past findings that fast rotating M dwarfs are the most likely to flare and that their flare amplitude is independent of the rotation period. Finally, we link our results to criteria for prebiotic chemistry, atmospheric loss through coronal mass ejections, and ozone sterilization. Four of our flaring M dwarfs host exoplanet candidates alerted on by TESS, for which we discuss how these effects can impact life. With upcoming TESS data releases, our flare analysis can be expanded to almost all bright small stars, aiding in defining criteria for exoplanet habitability.
Models of the Mass-ejection Histories of Pre-planetary Nebulae. IV. Magnetized Winds and the Origins of Jets, Bullets, and FLIERs
Authors: Balick Bruce , Frank Adam , Liu Baowei 
Published: January 2020

Abstract
This paper explores the influences and consequences of toroidal magnetic fields in shaping the visible lobes of pre-planetary nebulae (prePNe). To probe these influences we start with the steady, diverging, and field-free wind model of our previous papers and add weak to moderate toroidal fields to the winds in order to generate arrays of outcomes after 500 yr, after which the structures grow almost homologously. As expected, toroidal fields in the stellar winds invariably form very thin and dense axial features whose structure is best described as a thin cold jet with an ultra-dense and neutral leading knot, or bullet, at its tip. The speed of the leading knot depends only on the density contrast (the ratio of injected to ambient gas densities at the nozzle) and wind injection speed, but not on the field strength or opening angle. The lobes formed by the ram pressure of the winds take a variety of forms and sizes that depend primarily on the geometric structure of the injected gas and the density contrast. About 20% of the Hubble Space Telescope images of prePNe show unique signatures of shaping by toroidal fields. Pairs of low-ionization knots seen along the major axis of fully ionized PNe, often called FLIERs, are easily explained as the very dense, cold, and neutral remnants of magnetically formed knots.
Probing the Emission States of PSR J1107−5907
Authors: Wang Jingbo , Hobbs George , Kerr Matthew , Shannon Ryan , Dai Shi , Ravi Vikram , Cameron Andrew , Kaczmarek Jane F. , Hollow Robert , Li Di , Zhang Lei , Miao Chenchen , Yuan Mao , Wang Shen , Zhang Songbo , Xu Heng , Xu Renxin 
Published: January 2020

Abstract
The emission from PSR J1107−5907 is erratic. Sometimes the radio pulse is undetectable, at other times the pulsed emission is weak, and for short durations the emission can be very bright. In order to improve our understanding of these state changes, we have identified archival data sets from the Parkes radio telescope in which the bright emission is present, and find that the emission never switches from the bright state to the weak state, but instead always transitions to the “off” state. Previous work had suggested the identification of the “off” state as an extreme manifestation of the weak state. However, the connection between the “off” and bright emission reported here suggests that the emission can be interpreted as undergoing only two emission states: a “bursting” state consisting of both bright pulses and nulls, and the weak emission state.
Hubble Space Telescope Observations of Mira Variables in the SN Ia Host NGC 1559: An Alternative Candle to Measure the Hubble Constant
Authors: Huang Caroline D. , Riess Adam G. , Yuan Wenlong , Macri Lucas M. , Zakamska Nadia L. , Casertano Stefano , Whitelock Patricia A. , Hoffmann Samantha L. , Filippenko Alexei V. , Scolnic Daniel 
Published: January 2020

Abstract
We present year-long, near-infrared Hubble Space Telescope (HST) WFC3 observations used to search for Mira variables in NGC 1559, the host galaxy of the Type Ia supernova (SN Ia) SN 2005df. This is the first dedicated search for Miras, highly evolved low-mass stars, in an SN Ia host, and subsequently the first calibration of the SN Ia luminosity using Miras in a role historically played by Cepheids. We identify a sample of 115 O-rich Miras with P < 400 days based on their light-curve properties. We find that the scatter in the Mira period–luminosity relation (PLR) is comparable to Cepheid PLRs seen in SN Ia host galaxies. Using a sample of O-rich Miras discovered in NGC 4258 with HSTF160W and its maser distance, we measure a distance modulus for NGC 1559 of

(statistical)

(systematic) mag. Based on the light curve of the normal, well-observed, low-reddening SN 2005df, we obtain a measurement of the fiducial SN Ia absolute magnitude of

mag. With the Hubble diagram of SNe Ia we find

km s−1 Mpc−1. Combining the calibration from the NGC 4258 megamaser and the Large Magellanic Cloud detached eclipsing binaries gives a best value of

km s−1 Mpc−1. This result is within 1σ of the Hubble constant derived using Cepheids and multiple calibrating SNe Ia. This is the first of four expected calibrations of the SN Ia luminosity from Miras that should reduce the error in H
0 via Miras to ∼3%. In light of the present Hubble tension and JWST, Miras have utility in the extragalactic distance scale to check Cepheid distances or calibrate nearby SNe in early-type host galaxies that would be unlikely targets for Cepheid searches.
Deep Hubble Space Telescope Imaging on the Extended Lyα Emission of a QSO at z = 2.19 with a Damped Lyman Alpha System as a Natural Coronagraph
Authors: Ding Jiani , Cai Zheng , Prochaska J. Xavier , Finley H. , Fan Xiaohui , Zheng Zheng , Fathivavsari H. , Petitjean P. 
Published: January 2020

Abstract
Recent observations suggest that proximate damped Lyα (PDLA) systems can be used to study the host galaxies of quasi-stellar objects (QSOs), because the PDLAs can block the bright point-spread function from central QSOs. Using six orbits of narrowband imaging with Hubble Space Telescope (HST)/WFC3, we present the first high-resolution narrowband image of the Lyα emission in the PDLA trough of the QSO SDSS J115432.67–021537.9. We detect one major component and one minor component in the narrowband imaging. Combining the

/WFC3 imaging with deep Magellan/MagE spectra, we measure that the Lyα flux

=

, which is among the luminous (≈2.7

) Lyα emitters at

2.19. The

-based star formation rate is ∼7

. These observational results favor that the star formation from the host galaxy could be the main mechanism powering the Lyα emission. This new method sheds light on the study of the kinematic structure and the spatial distribution of the extended Lyα emitting regions around the QSO host.
Detection of a Water Tracer in Interstellar Comet 2I/Borisov
Authors: McKay Adam J. , Cochran Anita L. , Dello Russo Neil , DiSanti Michael A. 
Published: January 2020

Abstract
We present high spectral resolution optical spectra obtained with the ARCES instrument at Apache Point Observatory showing detection of the [O i] 6300 Å line in interstellar comet 2I/Borisov. We employ the observed flux in this line to derive an H2O production rate of (6.3 ± 1.5) × 1026 mol s−1. Comparing to previously reported observations of CN, this implies a CN/H2O ratio of ∼0.3%–0.6%. The lower end of this range is consistent with the average value in comets, while the upper end is higher than the average value for solar system comets, but still within the range of observed values. C2/H2O is depleted, with a value likely less than 0.1%. The dust-to-gas ratio is consistent with the normal value for solar system comets. Using a simple sublimation model we estimate an H2O active area of 1.7 km2, which for current estimates for the size of Borisov suggests active fractions between 1% and 150%, consistent with values measured in solar system comets. More detailed characterization of 2I/Borisov, including compositional information and properties of the nucleus, is needed to fully interpret the observed H2O production rate.
Gender studies in Communication Degrees
Authors: García-Ramos Francisco-José , Zurian Francisco-A. , Núñez-Gómez Patricia 
Published: January 2020

This paper is the result of a research carried out under the umbrella of the “UNESCO UniTWIN Network on Media, Gender, and ICTs” Project, and it tries to determine the presence of subjects with a specific focus on gender in the current Communication Degrees offered at Spanish universities. The inclusion of subjects about gender equality in relation to media follows the suggestions of the IV World Conference on Women in Beijing (1995). The main objective of this research will be to investigate the presence of these subjects in Communication Degrees, identifying the elements that define them at a thematic, methodological and relevant levels within the curriculum. A mixed methodological design is proposed based on ex-post-facto research, with a descriptive orientation and the search for improvement, a qualitative analysis of study plans using ATLAS.ti and a panel of experts. The results reveal a scarce presence of this type of subjects, with a higher percentage in public universities than in private ones, and also a minimal relevance as compulsory subjects. This research study reveals the current formal training in gender studies of future generations of media professionals and serves as an endorsement for forthcoming changes of curricula in the European Higher Education Area context.
El presente trabajo es fruto de una investigación desarrollada en el marco del proyecto «UNESCO UniTWIN Network on Media, Gender, and ICTs» para determinar la presencia de asignaturas con un contenido específico en estudios de género en los actuales planes de estudio de los Grados españoles en el área de comunicación. La inclusión de asignaturas que aborden la igualdad de género en relación a los medios y procesos de comunicación obedece a lo establecido en la IV Conferencia Mundial sobre la Mujer de Beijing (1995). El objetivo principal de este trabajo será la indagación del nivel de presencia de estas asignaturas en los Grados en comunicación identificando los elementos que las definen a nivel temático, metodológico y relevancia dentro del plan de estudios. Se plantea un diseño metodológico mixto partiendo de una investigación ex-post-facto, con orientación descriptiva y de búsqueda de la mejora, un análisis cualitativo de planes de estudio mediante ATLAS.ti y un panel de expertos. Los resultados inciden en una escasa presencia de este tipo de asignaturas, con mayor porcentaje en la universidad pública respecto a la privada y una mínima relevancia como materia obligatoria. Un trabajo que vislumbra la actual formación reglada en cuestiones de género de las futuras generaciones de profesionales de los media y que sirve de apoyo para futuros cambios de planes de estudios en el Espacio Europeo de Educación Superior.
To-friend or not-to-friend with teachers on SNSs: University students' perspectives
Authors: Turan Zeynep , Durdu Levent , Goktas Yuksel 
Published: January 2020

A large majority of university students use social networking sites (SNS) actively. Nevertheless, there are very limited studies examining students’ perceptions about student-teacher relationships in SNSs comprehensively. The purpose of this research was to investigate university students’ perceptions about interacting with their teachers in SNSs, and to this end an exploratory mixed-methods design was utilised. Qualitative data were collected from 21 students via interviews, and quantitative data from 1,324 students in 19 universities in Turkey via a questionnaire. Content analysis, descriptive analysis and principal component analysis methods were used to analyse the data. The content analysis contributed to the formulation of the questionnaire items. The principal component analysis yielded the following four dimensions: perceived utility, perceived barriers, perceived favourable teacher behaviours, and perceived unfavourable teacher behaviours. The most prominent finding is that the students were mostly opposed to their teachers’ sharing their political and religious views; however, they were in favour of teachers sharing information about their personal life. Despite some students displaying some hesitation, especially concerning the level of respect between them, the majority of students had a positive outlook towards teacher-student friendships. The students indicated that being friends on SNSs would increase their motivation towards the course.
La gran mayoría de los estudiantes universitarios utilizan activamente las redes sociales (RRSS). Sin embargo, hay estudios limitados sobre las percepciones de estos con base en la relación estudiante-profesor en RRSS. El propósito de esta investigación fue investigar las percepciones de los estudiantes universitarios sobre la interacción con sus profesores en redes sociales. Para este fin se empleó un diseño exploratorio mediante métodos mixtos. Se recopilaron datos cualitativos de 21 estudiantes por medio de entrevistas y datos cuantitativos de 1.324 sujetos en 19 universidades de Turquía mediante cuestionario. Para analizar los datos se aplicaron análisis de contenido, análisis descriptivo, y análisis de componentes principales. El primero contribuyó a la formulación de los ítems del cuestionario. El análisis del componente principal arrojó cuatro dimensiones: utilidad percibida, barreras percibidas, comportamientos docentes percibidos como favorables y desfavorables. El hallazgo más destacado fue que los estudiantes se opusieron principalmente a que sus profesores compartieran sus puntos de vista políticos y religiosos. No obstante, estaban a favor de que los docentes compartieran información sobre su vida personal. A pesar de que algunos estudiantes mostraron dudas, especialmente con respecto al nivel de respeto entre ellos, la mayoría del alumnado tenía una perspectiva positiva hacia las amistades profesor-alumno. Estos indicaron que ser amigos en las redes sociales aumentaría su motivación hacia el curso.