bluuebunny/crossref_metadata_2025_split huggingface dataset:
El modelo español de dirección escolar y sus implicaciones en el desarrollo del liderazgo pedagógico en Andalucía. Un estudio cualitativo
Authors: Ritacco Real Maximiliano 
Published: November 2019

El desarrollo de un liderazgo pedagógico de la dirección escolar es un factor clave para la mejora de los resultados de aprendizaje del alumnado. Para ello, los directivos escolares requieren de un grado de autonomía -real- en la gestión de “lo pedagógico” en sus centros. No obstante, en España, el ejercicio del liderazgo no implica el desarrollo pleno de su dimensión pedagógica. La complejidad y la inercia tradicionalista de la cultura escolar de los centros inciden de forma negativa en estas cuestiones. De corte cualitativo e interpretativo, el estudio ha indagado en las perspectivas y valoraciones de quince directores acerca del ejercicio de su liderazgo y de las posibilidades para desarrollar un liderazgo pedagógico. La aplicación de la técnica del análisis de contenido dio como resultado la consolidación de una serie de categorías emergentes que responden a una serie de capacidades del liderazgo pedagógico. De cara a la fase interpretativa, la organización emergente de sus sub-categorías y el establecimiento de un índice de frecuencia categorial (IFC), como ingrediente cuantitativo, permitieron completar el grado de comprensión y especificación de la información.
The development of pedagogical leadership in school managers is a key factor for the improvement of students’ learning results. To this end, school managers require a degree of real autonomy regarding the management of pedagogical aspects in their schools. However, in Spain, the exercise of leadership does not imply the full development of its pedagogical dimension. The complexity and the traditionalist inertia of school culture have a negativeimpact on these issues. Qualitative and interpretative, the present study has investigated the perspectives of fifteen school principals about their leadership and the possibilities to develop pedagogical leadership. The application of the technique of content analysis resulted in the consolidation of a series of emerging categories that respond to a series of pedagogical leadership capacities. With regard to the interpretative phase, the emergent organisation of its subcategories and the establishment of a categorical frequency index (CFI), as a quantitative ingredient, allowed us to complete the degree of comprehension and specification of the information.
La perspectiva post-cualitativa en la investigación educativa: genealogía, movimientos, posibilidades y tensiones
Authors: Hernández-Hernández Fernando , Revelles Benavente Beatriz 
Published: November 2019

En este artículo se trata de situar una cierta genealogía de algunos de los movimientos que se vinculan en torno a la denominada perspectiva post-cualitativa en investigación. Estos movimientos han ido surgiendo como respuesta a los intentos, desde la década de los años 90 del pasado siglo, de positivizar, disciplinar y objetivar la investigación cualitativa bajo estándares y rúbricas que fijan los caminos a seguir tanto en la formación de investigadores como en la conceptualización y la práctica de la investigación. Esta tendencia, en el caso de Estados Unidos, que es donde está adquiriendo una mayor relevancia, queda reafirmada cuando en 2002 el NationalResearch Council publica un documento en el que se establece cómo ha de ser la investigación científica en educación: replicable, generalizable, empírica y preferentemente experimental. Decisión que forma parte de una gobernabilidad neoli beral que pretende establecer una visión unificada respecto a lo que ha de ser la realidad y el papel que la investigación ha de jugar en este propósito. Este movimiento, que se nutre de diferentes referentesy que se proyecta en varias direcciones cuestiona con argumentos la fundamentación onto-espistemológica-metodológica y ética que rige este intento normativizador, al tiempo que rehúye la explicitación de modos de hacer investigación que predetermine los sentidos abiertos e imprevisibles de todo proceso de indagación y plantea otras maneras de conceptualizar lo que un proceso de investigación puede llegar a ser.
This article aims to establish the genealogy of the strands that are linked to the so-called post-qualitative approach in research. These strands have emerged as a response to the attempts, since the 1990s, to positivize and objectify qualitative research by applying to it standards and rubrics which seek to define researcher training and the conceptualization and practice of research. This tendency, in the case of the United States where it is acquiring great relevance, is reaffirmed in 2002 when the National Research Council publishes a document that establishes how scientific research in education should be: replicable, generalizable, empirical and preferably experimental. This decision is part of a neoliberal form of governance that seeks to establish a unified vision of what reality should be and the role that research should have in this reality. The post-qualitative approach, which feeds on differentreferents and projects itself in various directions, questions the onto-espistemological-methodological and ethical foundations that drive this normative attempt, at the same time as it avoids ways of doing research that predetermine the open and unpredictable meanings to which processes of inquiry can lead. In doing so, this study proposes other ways of conceptualizing what a research process may become.
Un estudio fenomenológico: posicionamiento y gestos en clase
Authors: Maître de Pembroke Emmanuelle , Castelo Garrido Ana 
Published: November 2019

Este artículo propone una visión de los gestos profesionales docentes a través de la clarificación de los conceptos de posicionamiento y de postura. La investigación presentada en este artículo se inscribe en una perspectiva situada y encarnada y reconsidera el anclaje fenomenológico de la teoría enactiva. Con esto en mente, se han realizado entrevistas a seis formadores que acompañan a jóvenes docentes. Una primera serie de entrevistas semi-directivas permite recoger las representaciones y los valores relativos a la noción de postura profesional. La segunda entrevista es una entrevista de explicitación que permite aclarar la experiencia vivida de consejo y, en particular, las micro-informaciones captadas. El propósito de estos trabajos es la toma de consciencia de gestos que pasan por debajo del umbral de percepción y del sentido que contienen.
This article analyzes the gestures made by teaching professionals and clarifies the concepts of positioning and posture. This study is framed within situated and embodied cognition theories and revisits the phenomenological anchoring of enactive theory. Interviews were conducted with six trainers accompanying early-career teachers. A first series of semi-directed interviews collected the representations and the values that these trainers had concerning the notion of professional posture. The second part of the interview asked trainers to assess their experiences, especially the micro-information received. The purpose of this piece of research is to raise awareness on gestures which are not easy to perceive and on the meaning they contain.
Percepción del alumnado universitario sobre las tutorías académicas: revisión de los factores relevantes
Authors: Gargallo Castel Ana Felicitas , Pérez-Sanz Francisco Javier , Esteban-Salvador Luisa 
Published: November 2019

El enfoque de enseñanza-aprendizaje impulsado desde el Espacio Europeo de Educación Superior (EEES) incorpora una nueva forma de concebir la educación universitaria, donde el alumnado asume un papel principal en su aprendizaje. A su vez, implica una revalorización de la tarea docente y de la acción tutorial para reforzar el proceso formativo y el desarrollo integral de los alumnos y alumnas universitarios/as. Este trabajo tiene como objetivo conocer la opinión del alumnado acerca de los elementos relevantes en el uso de las tutorías académicas con el fin de identificar sus necesidades y mejorar la acción tutorial. En el diseño del estudio se adopta un enfoque descriptivo a partir de un cuestionario dirigido a estudiantes universitarios, que incluye preguntas relativas a su comportamiento y actitud personalante las tutorías, a la eficacia de las mismas, a su grado de utilización, y a la comunicación y relación establecida con el profesorado en dicho proceso. Los resultados, obtenidos a partir de una muestra de 322 estudiantes del campus de Teruel de la Universidad de Zaragoza, muestran cuatro aspectos relacionados con la autoconfianza del alumnado, la utilidad percibida, la motivación personal y el ahorro económico y/o de tiempo que supone el uso de las tutorías académicas. Si bien el grado de utilización de las mismas resulta moderado, es preciso destacar el valor que el alumnado otorga a la acción tutorial como estímulo para afrontar el trabajo requerido para superar la materia, así como para optimizar su tiempo de estudio.
The teaching-learning process promoted by the European Higher Education Area (EHEA) calls for a new approach in which the student is the main actor of his/her learning. This implies an increase in the value of the teaching task, in general, and tutoring in particular. Tutoring reinforces the training process and the integral development of students. The main objective of this study is to examine the opinion of university students about the use of academic tutoring in order to identify their needs and improve tutorial action. In the design of the study, the students were given a questionnaire to survey their personal attitudes and behavior toward tutorials, the extent to which they used tutorials and their effectiveness, and the level of communication and the relationship established with the teacher in the tutorials. The results, obtained from a sample of 322 students at the University of Zaragoza, Campus of Teruel, reveal four key points related to students’ self-confidence, perceived utility of the use of tutorials, personal motivation and financial and/or time cost (saving) that the students gain by attending tutorials. Although university students make only moderate use of tutorials, they emphasize the value of the tutorials as a stimulus to face the work required to pass a subject, as well as to optimize their study time.
Bokanmeldelse—Uwe Krügers <i>Mainstream</i> (2016)
Authors: Pötzsch Holger 
Published: November 2019

Mainstream: Warum wir den Medien nicht mehr trauen viser hvorfor en voksende avstand mellom borgere og elitene er problematisk for et demokratisk samfunn. En journalistikk som viser seg ute av stand til å kritisk følge elitedrevne prosesser og praksiser mister den sentrale vaktbikkjefunksjonen som man ofte uten videre ettertanke tildeler store medieaktører. Krügers bok kan sees som et velfundert kall for et kritisk og konstruktivt engasjement med disse utfordringene—et kall som er relevant ikke bare i en tysk kontekst.
Den anmeldte boken: Uwe Krüger. Mainstream: Warum wir den Medien nicht mehr trauen. ISBN-13: 978–3–406–68851–5. München: C. H. Beck, mars 2016. Paperback; 174 sider; veiledende pris: €14,95.
Effect of different ergonomic supports on muscle activity of dentists during posterior composite restoration
Authors: López-Nicolás Manuel , García-Vidal José A. , Medina-Mirapeix Francesc , Sánchez-Onteniente Joaquín P. , Berná Mestre Juan D. , Martín-San Agustín Rodrigo , Escolar-Reina María P. 
Published: November 2019

BackgroundThe aim of this study was to evaluate the effect of different ergonomic supports on the muscle activity of two trunk muscles while a group of dentists performed a common dental procedure on a phantom head, divided into three tasks.MethodsA one-way repeated measures study (ANOVA) was conducted on a group of 36 dentists. The middle trapezius and lumbar erector spinae muscles were measured with and without the use of different ergonomic supports (ergonomic stool, magnification lenses and both) using a portable surface electromyography (sEMG) device. Intraclass correlation coefficients (ICCs) and the absolute standard error of measurement (SEM) were used to establish the reliability of the baseline measures without ergonomic supports.ResultsThe sEMG showed excellent ICCs (ranging from 0.92 to 0.99) and SEM. Bonferroni post hoc tests showed differences between the three ergonomic supports (p< 0.001) in both muscles studied. The lowest muscle activity measurement occurred with the isolated used of magnification lenses. The use of the ergonomic stool increased the muscle activity of the middle trapezius and lumbar erector spinae muscles to a greater extent than the magnification lenses. The combination of the ergonomic stool and the magnification lenses produced a different effect on each muscle.
Mass Media as an Environmental Awareness Strategies and Attitude of Farmers towards Deforestation in Southern Cross River State, Nigeria
Authors: O. Omari Agnes , Remi Omoogun M. , E. Effiom John 
Published: November 2019

The main purpose of this study was to examine mass media as environmental awareness strategies and attitude of farmers towards deforestation in the rainforest zone of southern Cross River State, Nigeria. The hypothesis, which states that the use of mass media does not significantly influence the attitude of farmers towards deforestation in the rainforest zone of southern Cross River State, Nigeria, was formulated to guide the study. Ex-post facto research design was considered most suitable for the study. The sample consists of 568 respondents randomly selected through the stratified and simple random sampling techniques. A structured questionnaire was the instrument used for data collection. The instrument was faced validated by three experts in Test and Measurement. The reliability estimate of 0.83 was established through the Cronbach alpha reliability method. Simple linear regression statistical tool was used for data analysis. The result revealed that, there is a significant influence of mass media on attitude of farmers towards deforestation. Based on this finding it was recommended among others that environmental educators and advocates should ensure that the mass media should be maximally utilized to continually create environmental awareness among the citizens in order to empower them to develop more positive attitude towards eradication of negative environmental practices and actions.
Mie‐Resonant Membrane Huygens' Metasurfaces
Authors: Yang Quanlong , Kruk Sergey , Xu Yuehong , Wang Qingwei , Srivastava Yogesh Kumar , Koshelev Kirill , Kravchenko Ivan , Singh Ranjan , Han Jiaguang , Kivshar Yuri , Shadrivov Ilya 
Published: November 2019

AbstractAll‐dielectric metasurfaces have become a new paradigm for flat optics as they allow flexible engineering of the electromagnetic space of propagating waves. Such metasurfaces are usually composed of individual subwavelength elements embedded into a host medium or placed on a substrate, which often diminishes the quality of the resonances. The substrate imposes limitations on the metasurface functionalities, especially for infrared and terahertz frequencies. Here a novel concept of membrane Huygens' metasurfaces is introduced. The metasurfaces feature an inverted design, and they consist of arrays of holes made in a thin membrane of high‐index dielectric material, with the response governed by the electric and magnetic Mie resonances excited within dielectric domains of the membrane. Highly efficient transmission combined with the 2π phase coverage in the freestanding membranes is demonstrated. Several functional metadevices for wavefront control are designed, including beam deflector, a lens, and an axicon. Such membrane metasurfaces provide novel opportunities for efficient large‐area metadevices, whose advanced functionality is defined by structuring rather than by chemical composition.
Introducing pinMOS Memory: A Novel, Nonvolatile Organic Memory Device
Authors: Zheng Yichu , Fischer Axel , Sawatzki Michael , Doan Duy Hai , Liero Matthias , Glitzky Annegret , Reineke Sebastian , Mannsfeld Stefan C. B. 
Published: November 2019

AbstractIn recent decades, organic memory devices have been researched intensely and they can, among other application scenarios, play an important role in the vision of an internet of things. Most studies concentrate on storing charges in electronic traps or nanoparticles while memory types where the information is stored in the local charge up of an integrated capacitance and presented by capacitance received far less attention. Here, a new type of programmable organic capacitive memory called p‐i‐n‐metal‐oxide‐semiconductor (pinMOS) memory is demonstrated with the possibility to store multiple states. Another attractive property is that this simple, diode‐based pinMOS memory can be written as well as read electrically and optically. The pinMOS memory device shows excellent repeatability, an endurance of more than 104 write‐read‐erase‐read cycles, and currently already over 24 h retention time. The working mechanism of the pinMOS memory under dynamic and steady‐state operations is investigated to identify further optimization steps. The results reveal that the pinMOS memory principle is promising as a reliable capacitive memory device for future applications in electronic and photonic circuits like in neuromorphic computing or visual memory systems.
A Bidirectional Deep Neural Network for Accurate Silicon Color Design
Authors: Gao Li , Li Xiaozhong , Liu Dianjing , Wang Lianhui , Yu Zongfu 
Published: November 2019

AbstractSilicon nanostructure color has achieved unprecedented high printing resolution and larger color gamut than sRGB. The exact color is determined by localized magnetic and electric dipole resonance of nanostructures, which are sensitive to their geometric changes. Usually, the design of specific colors and iterative optimization of geometric parameters are computationally costly, and obtaining millions of different structural colors is challenging. Here, a deep neural network is trained, which can accurately predict the color generated by random silicon nanostructures in the forward modeling process and solve the nonuniqueness problem in the inverse design process that can accurately output the device geometries for at least one million different colors. The key results suggest deep learning is a powerful tool to minimize the computation cost and maximize the design efficiency for nanophotonics, which can guide silicon color manufacturing with high accuracy.
Modeling Thin Film Solar Cells: From Organic to Perovskite
Authors: Li Deli , Song Lin , Chen Yonghua , Huang Wei 
Published: November 2019

AbstractDevice model simulation is one of the primary tools for modeling thin film solar cells from organic materials to organic–inorganic perovskite materials. By directly connecting the current density–voltage (J–V) curves to the underlying device physics, it is helpful in revealing the working mechanism of the heatedly discussed organic–inorganic hybrid perovskite solar cells. Some distinctive optoelectronic features need more phenomenological models and accurate simulations. Herein, the application of the device model method in the simulation of organic and organic–inorganic perovskite solar cells is reviewed. To this end, the ways of the device model are elucidated by discussing the metal–insulator–metal picture and the equations describing the physics. Next, the simulations on J–V curves of organic solar cells are given in the presence of the space charge, interface, charge injection, traps, or exciton. In the perovskite section, the effects of trap states, direct band recombination, surface recombination, and ion migration on the device performance are systematically discussed from the perspective of the device model simulation. Suggestions for designing perovskite devices with better performance are also given.
A novel heterozygous loss‐of‐function DCC Netrin 1 receptor variant in prenatal agenesis of corpus callosum and review of the literature
Authors: Sagi‐Dain Lena , Kurolap Alina , Ilivitzki Anat , Mory Adi , Paperna Tamar ,   Regeneron Genetics Center, Kedar Reuven , Gonzaga‐Jauregui Claudia , Peleg Amir , Baris Feldman Hagit 
Published: November 2019

AbstractAgenesis of the corpus callosum (ACC) is a common prenatally‐detected brain anomaly. Recently, an association between mutations in the DCC Netrin 1 receptor (DCC) gene and ACC, with or without mirror movements, has been demonstrated. In this manuscript, we present a family with a novel heterozygous frameshift mutation in DCC, review the available literature, and discuss the challenges involved in the genetic counseling for recently discovered disorders with paucity of medical information. We performed whole exome sequencing in a healthy nonconsanguineous couple that underwent two pregnancy terminations due to prenatal diagnosis of ACC. A heterozygous variant c.2774dupA (p.Asn925Lysfs*17) in the DCC gene was demonstrated in fetal and paternal DNA samples, as well as in a healthy 4‐year‐old offspring. When directly questioned, both father and child reported having mirror movements not affecting quality of life. Segregation analysis demonstrated the variant in three paternal siblings, two of them having mirror movements. Brain imaging revealed normal corpus callosum. Summary of literature data describing heterozygous loss‐of‐function variants in DCC (n = 61) revealed 63.9% penetrance for mirror movements, 9.8% for ACC, and 5% for both. No significant neurodevelopmental abnormalities were reported among the seven published patients with DCC loss‐of‐function variants and ACC. Prenatal diagnosis of ACC should prompt a specific anamnesis regarding any neurological disorder, as well as intentional physical examination of both parents aimed to detect mirror movements. In suspicious cases, detection of DCC pathogenic variants might markedly improve the predicted prognosis, alleviate the parental anxiety, and possibly prevent pregnancy termination.
Bifunctional Nanoscale Assemblies: Multistate Electrochromics Coupled with Charge Trapping and Release
Authors: Hamo Yonatan , Lahav Michal , van der Boom Milko E. 
Published: November 2019

AbstractWe demonstrate controlled charge trapping and release, accompanied by multiple color changes in a metallo‐organic bilayer. The dual functionality of the metallo‐organic materials provides fundamental insight into the metal‐mediated electron transport pathways. The electrochemical processes are visualized by distinct, four color‐to‐color transitions: red, transparent, orange, and brown. The bilayer is composed of two elements: 1) a nanoscale gate consisting of a layer of well‐defined polypyridyl ruthenium complexes bound to a flexible transparent electrode, and 2) a charge storage layer consisting of isostructural iron complexes attached to the surface of the gate. This gate mediates or blocks electron transport in response to an applied voltage. The charge storage and release depend on the oxidation state of the layer of ruthenium complexes (=gate). Combining electrochemistry with optical data revealed mechanistic information: the brown coloration of the bilayer directly relates to the formation of intermediate ruthenium species, providing evidence for catalytic positive charge release mediated through the gate.
Site‐Selective Late‐Stage Aromatic [18F]Fluorination via Aryl Sulfonium Salts
Authors: Xu Peng , Zhao Da , Berger Florian , Hamad Aboubakr , Rickmeier Jens , Petzold Roland , Kondratiuk Mykhailo , Bohdan Kostiantyn , Ritter Tobias 
Published: November 2019

AbstractSite‐selective functionalization of C−H bonds in small complex molecules is a long‐standing challenge in organic chemistry. Herein, we report a broadly applicable and site‐selective aromatic C−H dibenzothiophenylation reaction. The conceptual advantage of this transformation is further demonstrated through the two‐step C−H [18F]fluorination of a series of marketed small‐molecule drugs.