bluuebunny/crossref_metadata_2025 huggingface dataset:
Late Holocene evolution of a coupled, mud-dominated delta plain–chenier plain system, coastal Louisiana, USA
Authors: Hijma Marc P. , Shen Zhixiong , Törnqvist Torbjörn E. , Mauz Barbara
Published: November 2017

Abstract. Major deltas and their adjacent coastal plains are commonly linked by means of coast-parallel fluxes of water, sediment, and nutrients. Observations of the evolution of these interlinked systems over centennial to millennial timescales are essential to understand the interaction between point sources of sediment discharge (i.e. deltaic distributaries) and adjacent coastal plains across large spatial (i.e. hundreds of kilometres) scales. This information is needed to constrain future generations of numerical models to predict coastal evolution in relation to climate change and other human activities. Here we examine the coastal plain (Chenier Plain, CP) adjacent to the Mississippi River delta, one of the world's largest deltas. We use a refined chronology based on 22 new optically stimulated luminescence and 22 new radiocarbon ages to test the hypothesis that cyclic Mississippi subdelta shifting has influenced the evolution of the adjacent CP. We show that over the past 3 kyr, accumulation rates in the CP were generally 0–1 Mt yr−1. However, between 1.2 and 0.5 ka, when the Mississippi River shifted to a position more proximal to the CP, these rates increased to 2.9 ±1.1 Mt yr−1 or 0.5–1.5 % of the total sediment load of the Mississippi River. We conclude that CP evolution during the past 3 kyr was partly a direct consequence of shifting subdeltas, in addition to changing regional sediment sources and modest rates of relative sea-level (RSL) rise. The RSL history of the CP during this time period was constrained by new limiting data points from the base of overwash deposits associated with the cheniers. These findings have implications for Mississippi River sediment diversions that are currently being planned to restore portions of this vulnerable coast. Only if such diversions are located in the western portion of the Mississippi Delta plain could they potentially contribute to sustaining the CP shoreline. Our findings highlight the importance of a better understanding of mud-dominated shorelines that are often associated with major deltas, in light of the enormous investments in coastal management and restoration that will likely be made around the globe, now and especially later during this century.
Isca, v1.0: A Framework for the Global Modelling of the Atmospheres of Earth and Other Planets at Varying Levels of Complexity
Authors: Vallis Geoffrey K. , Colyer Greg , Geen Ruth , Gerber Edwin , Jucker Martin , Maher Penelope , Paterson Alexander , Pietschnig Marianne , Penn James , Thomson Stephen I.
Published: November 2017

Abstract. Isca is a framework for the idealized modelling of the global circulation of planetary atmospheres at varying levels of complexity and realism. The framework is an outgrowth of models from the Geophysical Fluid Dynamics Laboratory designed for Earth's atmosphere, but it may readily be extended into other planetary regimes. Various forcing and radiation options are available, from dry, time invariant, Newtonian thermal relaxation to moist dynamics with radiative transfer. Options are available in the dry thermal relaxation scheme to account for the effects of obliquity and eccentricity (and so seasonality), different atmospheric optical depths and a surface mixed layer. An idealized gray radiation scheme, a two-band scheme and a multi-band scheme are also available, all with simple moist effects and astronomically-based solar forcing. At the complex end of the spectrum the framework provides a direct connection to comprehensive atmospheric general circulation models. For Earth modeling, options include an aqua-planet and configurable continental outlines and topography. Continents may be defined by changing albedo, heat capacity and evaporative parameters, and/or by using a simple bucket hydrology model. Oceanic Q-fluxes may be added to reproduce specified sea-surface temperatures, with arbitrary continental distributions. Planetary atmospheres may be configured by changing planetary size and mass, solar forcing, atmospheric mass, radiative, and other parameters. Examples are given of various Earth configurations as well as a Jovian simulation, a Venusian simulation, and tidally-locked and other orbitally-resonant exo-planet simulations. The underlying model is written in Fortran and may largely be configured with Python scripts. Python scripts are also used to run the model on different architectures, to archive the output, and for diagnostics, graphics, and post-processing. All of these features are publicly available on a git-based repository.
The concept of credible duration for the Regional Frequency
Analysis including historical data: application of the FAB
method to a skew storm surge database
Authors: Frau Roberto , Andreewsky Marc , Bernardara Pietro
Published: November 2017

Abstract. The design of effective coastal protections requires an adequate estimation of the annual probability of occurrence of rare events associated to a return period up to 103 years. The characterisation of extreme events is carried out by statistical methods based on the extreme value theory. Usually, these methods apply to very short observations series and the uncertainties associated to high return periods are too wide to be used in a design approach. Nowadays, large and spatially distributed dataset are available and historical data approaches are providing new insight on past events. Combining local information with regional information and historical information will increase the precision and the reliability of low probability extrapolation. However, the past events data provided by single events analysis are not continuous and exhaustive as systematic records. Can we guess how exhaustive the historical records are and how many historical events have been missed by the observations? This is a very important information for the estimation of the correct empirical frequency of the extreme events. To answer these questions, the FAB method is introduced here. It is based on a new definition of the credible duration, representing the estimate duration of the support of the data.
Is there 1.5-million-year-old ice near Dome C, Antarctica?
Authors: Parrenin Frédéric , Cavitte Marie G. P. , Blankenship Donald D. , Chappellaz Jérôme , Fischer Hubertus , Gagliardini Olivier , Masson-Delmotte Valérie , Passalacqua Olivier , Ritz Catherine , Roberts Jason , Siegert Martin J. , Young Duncan A.
Published: November 2017

Abstract. Ice sheets provide exceptional archives of past changes in polar climate, regional environment and global atmospheric composition. The oldest dated deep ice core drilled in Antarctica has been retrieved at EPICA Dome C (EDC), reaching ∼ 800 000 years. Obtaining an older paleoclimatic record from Antarctica is one of the greatest challenges of the ice core community. Here, we use internal isochrones, identified from airborne radar coupled to ice-flow modelling to estimate the age of basal ice along transects in the Dome C area. Three glaciological properties are inferred from isochrones: surface accumulation rate, geothermal flux and the exponent of the Lliboutry velocity profile. We find that old ice (> 1.5 Myr, 1.5 million years) likely exists in two regions: one ∼ 40 km south-west of Dome C along the ice divide to Vostok, close to a secondary dome that we name Little Dome C (LDC), and a second region named North Patch (NP) located 10–30 km north-east of Dome C, in a region where the geothermal flux is apparently relatively low. Our work demonstrates the value of combining radar observations with ice flow modelling to accurately represent the true nature of ice flow, and understand the formation of ice-sheet architecture, in the centre of large ice sheets.
Strengths-based student-led presentations in clinical reflection seminars: Narratives of learning experiences
Authors: Zou Ping , Easton Lauren , Mudrick Emily , Grzelak Stephanie , Vanderlee Rick
Published: November 2017

According to the strengths-based care theory, the strengths-based student-led presentation was designed and implemented in order to improve learning and teaching experiences in clinical reflection seminars. This paper describes learning experiences of both the instructor and the learners, explores common narrative themes, and discusses future implications of strengths-based applications in undergraduate nursing education. Through reflection on learning experiences, four themes, including creating a caring and empathetic learning environment, an open self-directed curriculum design, reciprocal learning,  and leadership to influence peers and practicum, have been explored.
Determination of Distribution Equilibrium-Potential Differences Based on Extraction with Several Crown Ethers by Nitrobenzene, 1,2-Dichloroethane and Dichloromethane
Authors: Kudo Yoshihiro , Amano Tomohiro , Ikeda Satoshi
Published: November 2017

Extraction constants (Kex± & Kex) were determined at 298 K for the extraction of sodium picrate (NaPic) by nitrobenzene (NB), 1,2-dichloroethane (DCE) and dichloromethane using 3m-crown-m ethers and their benzo-derivatives (m = 5, 6; abbreviated as L) together with the determination of conditional distribution constants (KD,Pic) of picrate ion, Pic-, into these diluents. The K1,org (= [NaLPic]org/[NaL+]org[Pic-]org) values at the organic (org) phases, such as NB & DCE, were calculated from the relation Kex/Kex± = K1,org. Distribution equilibrium-potential differences (Dfeq) at extraction equilibria were evaluated from the equation Dfeq = -0.05916´(log KD,Pic - constant) at 298 K. Correlations of the above equilibrium constants, particularly Kex±, with Dfeq were examined. Furthermore, the standard formal potentials for Na+ transfers across the interfaces were briefly evaluated from calculated Dfeq, [Na+] and [Pic-]org. The above extraction systems were characterized by K1,org and the complex formation constants of Na+ with L in the org phases.
Open Market Repurchase Programs - Evidence from Finland
Authors: Högholm Kenneth , Högholm Victor
Published: November 2017

Share repurchase programs have during the past few decades become an important way of distributing cash to shareholders since they are viewed by managers as more flexible than dividends. Open market repurchase authorizations effectively also give managers an option to repurchase shares when they view their stock as undervalued. This study exploits a data set of open market repurchases programs initiated by Finnish stock market listed companies. Finland is unique with regard to the disclosure requirements of open market repurchase programs, which enables an examination of the information content in both the initiation announcement as well as in the announcement of actual repurchases. The study covers all 293 share repurchase programs initiated between 1998 and 2013. The results show a significant positive announcement effect of about 2 percent on the initiation day. The CAAR over a five day event window is also about 1.5 percent (statistically significant). Furthermore, an additional statistically positive effect of 1.5 percent is found on the first repurchase day (about 1.1 percent over a five day event window). The positive announcement effect is larger for announcements regarding initiations of the first or the second repurchase program for a company.
The Impact of Applying Time Driven Activity-Based Costing on Improving the Efficiency of Performance in Jordanian Industrial Corporations: A Survey Study
Authors: Al-Halabi Nabil Bashir , Al-Mnadheh Yazan Mjahed
Published: November 2017

The paper explored the impact of applying the time driven activity-based costing-TDABC- model (independent variables) on improving the efficiency of performance (dependent variables) in Jordanian industrial corporations. Based on a questionnaire form data from a sample of 73 participants at different managerial positions, from 30 industrial corporations listed in Amman stock exchange (ASE), were gathered and processed using the statistical package of social sciences. The main results showed that there are significant impacts of applying TDABC on improving the efficiency of performance in Jordanian industrial corporations. The main conclusion indicated that TDABC has the ability to benefit from technological developments on the basis of the activities’ charts and reflected on pricing decision making processes in industrial corporations. The research also concluded that senior management and cost accountants of the sample studied did not desire in the short run to change the current cost accounting system due to the additional costs of using the new cost accounting system. The study recommended the application of TDABC in corporations where their operations relied on TDABC’s constituents as proved its impact on reducing costs of products and increasing corporations profitability.
Evaluating the Dimensions of Service Levels in Chain Hotels: From the Perspective of Top and Middle Managements (An Empirical Study in Jordan)
Authors: Aldebi Hameed , Hassan Ali Nafez Nimer , Abdulhassan Sadik Hussein
Published: November 2017

The current study aimed at measuring the top and middle managements’ perceptions about the dimensions of the hotel service levels in ten chain hotels in Amman /Jordan. It also aimed to identify their characteristics, problems and challenges. The study’s sample consisted of ten chain hotels in Amman .Questioners distributed in (10) hotels to one hundred persons top and middle management, but just (65) questionnaires retrieved were valid to statistical analysis. The questionnaire covered four areas. The first area is represented in the core services of the hotel. As for the second, it is concerned in the supported services, whereas the third area is concerned with the hotel facilitated services. As for the fourth area, it is concerned with the augmented services. The study concluded that the aforementioned convenient sample hotels have an accepted level of perceptions about the dimensions of the hotel service levels and its characteristics and the challenges. That was attributed to the hotels’ capabilities to understand their activities and their complicated mechanisms. There are lack of information concerning the perceptions levels about some hotel mechanisms and activities which require specialized professional skills in the hotel industry. At the end of the current study, we suggested several recommendations and suggestions related to the nature of the marketing dimensions of hotel services which contribute in developing the hotel industry in Jordan.
¿Saben los maestros en formación inicial qué subcompetencias están trabajando cuando diseñan una actividad de enseñanza?
Authors: De Pro Chereguini Carlos , De Pro Bueno Antonio , Serrano Pastor Francisca
Published: November 2017

Nuestros programas de formación inicial suelen incorporar los «últimos» conocimientos de la didáctica de las ciencias experimentales (DCE), pero no siempre se publica qué efectos produce en el aprendizaje de los futuros maestros. En una de nuestras materias, habíamos trabajado contenidos sobre las competencias básicas: qué son, en qué subcompetencias se desglosan, cuáles se trabajan en actividades habituales planteadas en las aulas, cómo se pueden replantear las actividades para incluir otras subcompetencias, cómo se pueden valorar... Entonces les pedimos que diseñaran una actividad sobre «Dispositivos y máquinas mecánicas» y que señalaran qué subcompetencias estaban trabajando. Hemos analizado sus respuestas. Los resultados muestran los logros y carencias de un grupo de maestros al finalizar el periodo de formación inicial.
¡Ha desaparecido un ratón! ¿Nos ayudáis a buscar al culpable? Análisis del impacto didáctico y emocional de un encargo ficticio
Authors: Carrió Llach Mar , Vila Marcel Costa
Published: November 2017

Se analiza el impacto didáctico y emocional de la contextualización de los contenidos de un curso de verano de biología molecular. Se propuso a tres grupos de estudiantes de educación secundaria un encargo ficticio. Consistía en descubrir al culpable del robo de un ratón de laboratorio a partir del análisis de muestras biológicas encontradas en el lugar de la desaparición. Resolver el caso requería diseñar experimentos, aplicar técnicas básicas de biología molecular, analizar los resultados y preparar una comunicación científica. Se valoró el aprendizaje de 20 conceptos clave de biología molecular al inicio y al final del curso, lo que demostró la efectividad didáctica de este tipo de contextos. Además, se evidenció que el alumnado mejoró su percepción sobre la naturaleza de la ciencia y que se generaron emociones positivas.
La comprensión del signo de igual en la entrada al álgebra: el diseño de tareas y la conversación en la clase de matemática
Authors: Parodi Escobal Sebastián , Ochoviet Filgueiras Cristina , Lezama Andalón Javier
Published: November 2017

Presentamos un estudio que indaga sobre los significados que le atribuyen al signo de igual, en un contexto algebraico, un grupo de estudiantes de enseñanza secundaria (13-14 años) en un liceo de Uruguay. Focalizamos en dos sesiones de trabajo que desarrollamos con todo el grupo. Los resultados ponen de manifiesto que las tareas enfocadas a similitudes y diferencias, entre ellas las de clasificar y las que requieren comparar y contrastar, mediadas por una práctica de indagación, generaron genuinas discusiones que despertaron el interés de los estudiantes, lo que a su vez permitió abordar aspectos conceptuales relacionados con el signo de igual que contribuyeron a su comprensión.
Adolescent Risk-Taking Behaviors and School Performance: Distinguishing the Experiences of Boys and Girls
Authors: Lee Blair Sampson
Published: November 2017

Previous studies have examined the risk-taking behaviors of adolescents and their impact upon a variety of outcomes, yet comparatively few have addressed educational consequences. Using a nationally representative sample of American high school seniors, this study examines how risk-taking behaviors are associated with school performance, and how this relationship may vary by gender. Framed within the life-course perspective, the analyses reveal that while adolescent boys engage in significantly higher levels of delinquency and substance use, the consequences of such behavior appear to be greater for girls. The implications of these findings are discussed, as well as the gendered nature of risk-taking.
CSR Communication – An Emerging Field. The Editors’ Preface
Authors: Nielsen Anne Ellerup , Thomsen Christa
Published: November 2017

No abstract.
Scepticism in CSR Advertisements
Authors: Farache Francisca
Published: November 2017

The aim of the present paper is to make a contribution to CSR communication theory by investigating the level of substantial information provided in CSR print advertisements in the UK and Brazil. The paper evaluates CSR advertisements using textual analysis.The empirical evidence demonstrates that companies provide a low level of substantial information when advertising CSR.The paper provides empirical evidence as to the extent that corporations use substantial information in their advertisements.
Communicating Environmental and Ethical Performance: A Longitudinal Analysis of Annual Reports from 1998–2009
Authors: Kilian Thomas , Hennigs Nadine
Published: November 2017

Along with the publics’ increased demand for businesses to operate responsibly, more and more companies proactively publish their CSR-related principles and activities. A growing body of research is dedicated to the analysis of patterns in self-reported CSR performances; these studies use annual reports as a proxy for the social or environmental activities of the companies. Integrating qualitative and quantitative approaches, the aims of this paper are twofold: First, on the basis of content analysis, we examine categories of CSR-related communication that are in a second step used in a longitudinal perspective spanning twelve years, to compare how CSR motives and activities have changed over time.
An Exploratory Study of Transediting in Students’ Translation Processes
Authors: Schrijver Iris , Van Vaerenbergh Leona , Van Waes Luuk
Published: November 2017

Editing and translating are interconnecting concepts with fuzzy borderlines. In 1989, Stetting coined the term transediting to refer to the overlap of both activities in the translation task. This article reviews the existing literature on this topic. It also reports on an exploratory study of transediting in the translation processes of translation students with different degrees of declarative and procedural knowledge. Four MA translation students were asked to translate an American patient information leaflet (PIL) for a Dutch-speaking audience in accordance with the valid European Medicines Agency (EMA) directive. Of the four participants, two participants possessed only declarative knowledge of both the EMA standards and the text type. The other two participants also had some procedural knowledge, i.e. experience with translating patient information leaflets. Data on the translation processes were collected through think-aloud protocols and computer keystroke logging. By triangulating the data, we found not only a difference in the degree of transediting carried out by the participants, but also divergence in phase allocation of transediting in the translation processes. No clear link could be established between the use of transediting and the participants’ declarative and procedural knowledge.
What Web Ads, Blurbs and Introductions Tell Potential Dictionary Buyers about Users, User Needs and Lexicographic Functions
Authors: Andersen Birger
Published: November 2017

The present article deals with an investigation aimed at establishing the extent to which existing dictionaries provide potential dictionary buyers/borrowers with clear, unmistakable and easily understandable information about user need situations that might prompt consultation of the dictionary in question. The investigation analyses four monolingual English phrasal verbs dictionaries and five monolingual English specialised dictionaries. The primary sources of such information are identified as back cover blurbs of dictionaries, introductions to dictionaries and web ads for dictionaries. In the analysis, statements about user need situations extracted from these information sources are first classified as clear vs. unclear statements. The clear statements are then classified under the lexicographic function to which they are related. The results of the analysis disconfirm the hypothesis that the more well-defined and constrained the intended user group or groups for a given dictionary are, the more likely it is that the sources of information will provide the potential dictionary buyer/borrower with clear, unmistakable and easily understandable information about lexicographic function(s).
Procedimientos de transformación de superficies laminares como recurso didáctico en la formación de diseñadores.
Authors: Andujar José Ramón , Álvarez Lourdes , Bores José Luis , Otero Julián , Torralba Eva
Published: November 2017

Resumen: Se describe la experiencia desarrollada en la Escuela Superior de Diseño de Valencia de utilizar el origami como recurso didáctico para formar diseñadores. El término origami, de origen japonés, queda muy condicionado por la tradición  y se plantea un criterio más amplio de las técnicas relacionadas con él y su aplicación para la formación en diseño. Se explica cómo surge esta iniciativa y se describen los cambios de planteamiento metodológico llevados a cabo para su implementación en la asignatura Espacio y volumen, dentro de un marco de innovación educativa. Se presentan los beneficios y cualidades para la enseñanza de este conjunto de procedimientos que afectan a los alumnos, como receptores directos de la experiencia, y a los profesores como agentes implicados en su desarrollo. Se describen las habilidades que se pueden fomentar al aplicar los principios del plegado de papel, la relación directa con la geometría y cómo se amplía y profundiza en su conocimiento, convirtiéndose en un instrumento válido para conocer los principios del diseño tridimensional. Finalmente, se argumenta cómo estos procedimientos, de transformación de una superficie laminar en volumen, en su conjunto, son adecuados para trabajar en todas las especialidades de diseño y se presentan como un método de trabajo aplicable en el proceso creativo. Palabras clave: innovación educativa, origami, geometría, creatividad, metodología, diseño tridimensional. Abstract: The purpose of this study is to describe the experience of implementing origami as a didactic tool for training designers in Escuela Superior de Diseño de Valencia.The Japanese origin word origami has always been conditioned by tradition. A new and wider approach is given, as well as to the techniques related to it and its implementation in designers training.This study describes how the initiative began, and depicts the methodological changes performed for its implementation in the subject “Image and Design” from an innovative perspective. Both students and teachers, as receiving and driving forces, benefit from this innovative teaching experience.Given their relation with geometry, these paper folding techniques can develop the students’ skills, not only those ones connected to it, but also to other fields. This is a very useful tool to approach to the principles three-dimensional design.Finally, the study provides the reasons why the use of these methods, based on the transformation of a laminated surface into volume forms, is appropriate in every design category and is presented as an applicable method in the creative process. Keywords: educative innovation, origami, geometry, creativity, methodology, three-dimensional design.http://dx.doi.org/10.7203/eari.8.10024
La fotografía móvil y la representación del cuerpo: de la fragmentación al placer visual voyeurístico
Authors: Palazón Mª Encarna
Published: November 2017

Resumen: Partiendo de una línea de investigación anterior, este artículo de naturaleza analítica y especulativa, aborda las relaciones entre la fotografía realizada con las cámaras móviles y el tratamiento fotográfico del cuerpo. Esta relación se establece a partir del reconocimiento del placer visual en la actividad fotográfica, y más concretamente a través del voyeurismo y del fenómeno más amplio de la fragmentación corporal como un rasgo de la actual cultura visual. Este análisis y la especulación realizadas profundizan en los usos, limitaciones y posibilidades que las cámaras móviles nos plantean en términos sociales, culturales, y artísticos. Palabras clave: imágenes del cuerpo, fotografía, móviles, voyeur, inmediatez, representación artística. Abstract: Starting from a previous line of research, this analytical and speculative article deals with the relations between the photography made with the mobile cameras and the photographic treatment of the body. This relationship is established from the recognition of visual pleasure in the photographic activity, and more specifically through voyeurism and the broader phenomenon of body fragmentation as a feature of the current visual culture. This analysis and the speculation reflect the uses, limitations and possibilities that mobile cameras open in social, cultural, and artistic terms. Keywords: images of the body, photography, mobile, voyeur, immediacy, artistic representation.http://dx.doi.org/10.7203/eari.8.10044
La universidad, la escuela y el museo: relaciones e implicaciones educativas desde la mirada de Teresa Torres de Eça.
Authors: Soto González Maria Dolores
Published: November 2017

Esta entrevista a Teresa Torres Eça fue realizada el sábado 30 de Marzo de 2017. El lugar, el Museo da Quinta da Cruz de Viseu sede de Associação de Professores de Expressão e Comunicação Visual- APECV/ www.apecv.pt. Los días compartidos con Teresa han sido excepcionales. Amante de las artes y de la educación, no hubo ningún problema por su parte en contestar las preguntas realizadas, que tuvieron lugar en diferentes momentos ya que estar con Teresa es viajar, compartir y vivir.
Savia emergente para una entidad histórica. Iniciativas de Chiara Panciroli en la Universidad de Bolonia.
Authors: Huerta Ramon Ricard
Published: November 2017

La profesora Chiara Panciroli ejerce como docente e investigadora en el Departamento de Ciencias de la Educación “Giovanni Maria Bertin” de la Universidad de Bolonia. Estamos hablando de una institución pionera y de prestigio mundial, de hecho, el marco europeo de educación superior lleva precisamente el nombre de esta universidad italiana con relevante calado histórico: el Plan Bolonia. Conocemos las actividades que impulsa Chiara Panciroli desde hace años, especialmente cuando tomó empuje internacional su fomento de la educación patrimonial a través de congresos y publicaciones.
El lugar del no saber en la enseñanza de las artes visuales
Authors: García-Huidobro Rosario
Published: November 2017

Resumen: Este escrito reflexiona la importancia del no saber como un saber ser y hacer necesario en la enseñanza.Una forma de estar en el aula y de posicionarse como docentes que da cabida a la práctica del error, la incertidumbre, la fragilidad y vulnerabilidad ante las situaciones pedagógicas que enriquecen la enseñanza, porque  permiten que ocurra el aprendizaje desde el lugar de la sorpresa, la investigación y la mediación, donde los y las otras toman un lugar fundamental. A través de diversos relatos de las participantes de este estudio, se reflexionan cuatro modos de entender el no saber en la enseñanza de las artes visuales, ya que muestran una forma de enseñar que se vincula con la subjetividad política del saber. Palabras claves: saber docente, no saber, práctica docente, enseñanza artística, error, vulnerabilidad. Abstract: This paper reflects the importance of the not knowing as a necessary knowledge to be and do in teaching. A way of being in the classroom and of positioning oneself as teachers that allows the practice of error, uncertainty, fragility and vulnerability to pedagogical situations that enrich teaching, because they allow learning to occur from the place of surprise, research and mediation, where the others take a fundamental place. Through various accounts of the participants of this study, four ways of understanding the not knowing in the teaching of the visual arts are reflected, as they show a way of teaching that is linked to the political subjectivity of knowledge. Keywords: teaching knowledge, not knowing, teaching practice, art teaching, error, vulnerabilityhttp://dx.doi.org/10.7203/eari.8.9272
¿Artista educador o Educador artista? El límite difuso del rol social
Authors: Abara Josefina
Published: November 2017

Resumen: Este artículo surge de una experiencia y reflexión personal como artista y profesora en formación, que plantea la crisis cultural y educativa en Chile como el contexto donde opera el sistema tanto artístico como educacional, y que ante la emergencia cultural, desde el rol social del artista surge la necesidad de educar como la única solución. A raíz de esto, posteriormente se aborda el límite difuso entre el rol del artista y el rol del educador estableciendo un  paralelo de factores que constituyen una metodología compartida en el modo de operar de ambos roles, que reflexiona en torno al constante diálogo y tránsito entre estos quehaceres. Finalmente se exponen las fortalezas y debilidades de ambas disciplinas que confirman la interdependencia de los roles en virtud de la misión social compartida. Palabras clave: artista, educador, cultura, pedagogía, rol social, metodología compartida. Abstract: This article arises from a personal experience and reflection as an artist and professor in formation, which considers the cultural and educational crisis as the context where artistic and educationalsystemdeploys, and under the cultural emergency, from the social role of the artist appears the necessity to educate as the only solution. Subsequently approaches the unclear boundaries between the artist and educator social roles, settling a parallel of factors which shows a shared methodology in the way both positions acts, reflecting about the constant dialogue and transition between these roles. Finally considers the virtues and weakness of both disciplines confirming the interdependance of the roles towards the social mission they have in common. Keywords:artist, educator, culture, pedagogy, social role, shared methodology.http://dx.doi.org/10.7203/eari.8.9458
La búsqueda incesante por generar un entorno latinoamericano para la educación en artes
Authors: Huerta Ramon Ricard
Published: November 2017

Durante todo el siglo XX y lo que llevamos del presente han existido numerosas voces que han venido visibilizando un panorama de la educación artística propio de los países de Iberoamérica. Sin duda, una de las figuras relevantes que representa dicha realidad es la de Ramón Cabrera Salort, quien siempre ha optado por un discurso de acercamiento entre las diferentes tendencias e iniciativas que procedían de países como Chile, Argentina, Brasil, Colombia, México, Uruguay o Venezuela.
Santiago de Chile‘s morgue: the partial appropriation of the body and the rupturing of funeral rites
Authors: Varas Insunza Jose Manuel
Published: November 2017

This article describes the operational practices of the city morgue in Santiago, Chile
and their effects on the family members who come to claim the bodies of their loved ones.
It explores the impact of the body‘s passage through the morgue on the observance of
rituals surrounding death and mourning. An underlying conflict can be identified between
the states partial appropriation of and interference with the body and intrinsic needs
associated with the performance of funeral rites in accordance with cultural and religious
precepts.
Nuclear microenvironments modulate transcription from low-affinity enhancers
Authors: Tsai Albert , Muthusamy Anand K , Alves Mariana RP , Lavis Luke D , Singer Robert H , Stern David L , Crocker Justin
Published: November 2017

Transcription factors bind low-affinity DNA sequences for only short durations. It is not clear how brief, low-affinity interactions can drive efficient transcription. Here, we report that the transcription factor Ultrabithorax (Ubx) utilizes low-affinity binding sites in the Drosophila melanogaster shavenbaby (svb) locus and related enhancers in nuclear microenvironments of high Ubx concentrations. Related enhancers colocalize to the same microenvironments independently of their chromosomal location, suggesting that microenvironments are highly differentiated transcription domains. Manipulating the affinity of svb enhancers revealed an inverse relationship between enhancer affinity and Ubx concentration required for transcriptional activation. The Ubx cofactor, Homothorax (Hth), was co-enriched with Ubx near enhancers that require Hth, even though Ubx and Hth did not co-localize throughout the nucleus. Thus, microenvironments of high local transcription factor and cofactor concentrations could help low-affinity sites overcome their kinetic inefficiency. Mechanisms that generate these microenvironments could be a general feature of eukaryotic transcriptional regulation.
Estrogen therapy offsets thermal impairment of vitellogenesis, but not zonagenesis, in maiden spawning female Atlantic salmon (Salmo salar)
Authors: Anderson Kelli , Pankhurst Ned , King Harry , Elizur Abigail
Published: November 2017

In female Atlantic salmon (Salmo salar), exposure to warm summer temperatures causes a reduction in plasma 17β-estradiol (E2), which impairs downstream vitellogenesis and zonagenesis, and reduces egg fertility and embryo survival. The aim of the present study was to determine whether E2-treatment could offset thermal impairment of endocrine function and maintain egg quality in maiden (first-time-spawning)S. salarreared at 22 °C. Treatment with E2 at 22 °C stimulated vitellogenin (vtg) gene expression and subsequent protein synthesis which promoted oocyte growth and increased egg size relative to untreated fish at 14 and 22 °C. However, E2-treatment at 22 °C was not associated with an increase in egg fertility and embryo survival relative to untreated fish at 22 °C, despite the positive effects of E2-treatment on vitellogenesis and oocyte growth. As there was no evidence to suggest that the estrogen receptor alpha expression was suppressed by high temperature, this could be due to the lack of stimulation on zonagenesis by E2-treatment observed at high temperature during oocyte development. Our results demonstrate that treatment with E2 is not able to maintain zonagenesis or egg quality in maidenS. salarat high temperature, even whenvtggene expression, protein synthesis and subsequent oocyte growth is promoted. This implies that the mechanisms regulating zonagenesis, but not vitellogenesis are impaired at elevated temperature in femaleS. salarbroodstock, and highlights the remarkable complexity of thermally induced endocrine disruption in fish.
Parental control and bullying: Variable‐centered and person‐centered approaches
Authors: Liang Hanyu , Zhou Huiling , Xiao Na , Cheng Xiumei , Zheng Qiaoyi , Jiang Huaibin , Li Jie
Published: October 2024

Previous research has established a connection between parental control and bullying. However, the nuanced relationships involving different combinations of psychological control (PPC) and behavioral control (PBC), along with traditional and cyberbullying, remain ambiguous. Thus, this study investigated the associations of specific parental control dimensions and profiles with traditional and cyberbullying, focusing on the potential mediating mechanism of moral disengagement. A sample of 831 students (48.4% were female; Mage = 18.98 years; SDage = 1.08) was analyzed. Through latent profile analysis, three control profiles emerged: low PPC and PBC (40.31%), low PPC and high PBC (29.00%), and high PPC and PBC (30.69%). The findings indicated a positive correlation between PPC and traditional/cyberbullying. Moral disengagement mediated the relationship between PPC/PBC and traditional/cyberbullying. Particularly, high PPC and PBC were linked to cyberbullying. Moral disengagement mediated the relationship between high PPC and PBC and traditional/cyberbullying. These insights provide valuable empirical data for developing bullying interventions that consider parental control and moral disengagement.
Biomass‐Derived Carbon With Large Interlayer Spacing for Anode of Potassium Ion Batteries
Authors: Wang Yue , Zeng Jinjue , Wang Yanjun , Zhang Chen , Wang Qi , Gao Lei , Sun Dandan , Jiang Xiangfen , Hu Ming , Yang Lijun , Xie Daiqian , Hao Yufeng , Hu Zheng , Wang Xuebin
Published: October 2024

Potassium‐ion batteries (PIBs) are emerging as powerful candidate for grid‐oriented energy storage owing to their potentially low cost. Carbon is considered the promising anode for PIBs on the basis of its high conductivity and abundant sources. The biggest challenge confronted by carbon anodes lies in insufficient cycle life as well as rate capability, resulting from the limited interlayer spacing of the sp2‐hybrid carbon incompatible with the large‐radius potassium. Herein, a biomass‐derived carbon with a large interlayer spacing of 0.44 nm is fabricated via a zinc‐assisted pyrolysis synthesis. The unique structure endows the carbon with superior capacity, rate capability, and cycle durability. The large interlayer spacing of carbons can promote fast potassium diffusion and alleviate the volume expansion during potassiation, conferring those rate capabilities and cycleability. The interconnected network structure is also able to shorten both the transport distances of electrons and ions. The demonstration exemplifies an advanced carbon for anodes of PIBs for energy storage applications.
Manufacturing of Anisotropic Protein‐Based Scaffolds to Precisely Mimic Native‐Tissue Mechanics
Authors: Schmidt Amanda , Greenhalgh Alexander , Jockenhoevel Stefan , Fernández‐Colino Alicia , Frydrych Martin
Published: October 2024

Biological and mechanical mismatches between engineered scaffolds and native tissues poses widespread challenges for tissue restoration. Native‐like anisotropy is a critical characteristic for functional tissue replacements, yet it is an often‐overlooked aspect when designing new scaffolds. In this study, fiber‐reinforced tubular scaffolds are developed, mimicking the anisotropic characteristics of natural tissues, using native‐like silk fibroin. To predict the mechanical behavior of these innovative scaffolds, a mathematical model is employed, utilizing the properties of the scaffolds’ constituent materials, and experimentally validated through tensile testing. This approach addresses significant challenges in the design of new scaffold implants by enabling to efficiently predict the performance of several configurations, narrowing down the experimental research space. The proposed platform constitutes an appealing tool for the development of clinically relevant tissue‐equivalents.
Design of Multioctave PA Based on Spoof Surface Plasmon Polaritons
Authors: Geng Maojia , Zhang Hongbo , Cai Jialin , Pan Baicao
Published: October 2024

A novel spoof surface plasmon polaritons (SSPP) structure is applied to the design of radio frequency (RF) power amplifiers (PAs) in this work. Both standard SSPP and the proposed SSPP structures are used as input and output matching networks of a multioctave PA design. An analysis and discussion of the electromagnetic characteristics of the proposed SSPP structures is presented. Further optimization of PA performance is achieved by utilizing the gradient algorithm of the Advanced Design System tool. According to the test results, the newly developed SSPP‐based PA achieves output power ranging from 40.5 to 42.6 dBm, while the power additional efficiency varies between 60% and 66.55%, with a total layout size of 59.8 mm × 14.6 mm in the frequency band of 0.8–3.2 GHz. In comparison with recent published work, the PA designed in this work expands the bandwidth while maintaining high output power and efficiency while being smaller in size.
Interplay of Excited‐States on Circularly Polarized Thermally Activated Delayed Fluorescent Chiral Exciplexes
Authors: Sumsalee Patthira , Kumar Ramar Arun , Lucas Fabien , Tondelier Denis , Crassous Jeanne , Pieters Grégory , Favereau Ludovic
Published: October 2024

Molecular emitters that combined thermally activated delayed and circularly polarized fluorescence (CP‐TADF) is of paramount importance for the next generation of displays. While most efforts have thus far focused on covalent donor and acceptor CP‐TADF emitters, a novel strategy based on chiral exciplexes has recently emerged. In this context, we present the synthesis and chiroptical properties of four new CP‐TADF exciplexes, involving two distinct C2‐symmetric bicarbazole systems and two terpyridine‐based derivatives, which serve as the chiral donor and achiral acceptor units, respectively. These exciplexes exhibit CP‐luminescence, with intensity dependent on both the chiral donor and achiral constituents, resulting in emission dissymmetry factors reaching up to 10⁻2 in the thin‐film solid state. Additionally, small singlet‐triplet gaps (∆EST ≤ 0.1 eV) have been measured, leading to TADF characteristics with a photoluminescence quantum yield of 20% for the most efficient emitter, which is also successfully used in non‐optimized organic lightemitting diodes (OLEDs). Interestingly, these chiral exciplexes allow us to explore the impact of the locally‐excited (LE) state of the chiral donor on overall exciplex emission, particularly in relation to the intensity of polarized emission—potentially highlighting a key factor in the design of this type of bimolecular CP‐TADF emitter.
Efficient and Thermally Stable Cr3+‐Doped Phosphor Achieved by Cation Substitution: Plant Lighting Application
Authors: Dai Xiangyi , Zou Xikun , Wei Mingkai , Zhang Xuejie , Dong Bin , Li Xinming , Cong Yan , Li Dongyu , Zhao Jie , Molokeev Maxim S. , Lei Bingfu
Published: October 2024

Far‐red phosphor‐converted light‐emitting diodes are receiving increasing attention as an essential component of the next‐generation plant‐growth lights. However, developing far‐red phosphors with high quantum efficiency, low thermal quenching, and suitable emitting wavelength is crucial and urgent. Herein, a new far‐red phosphor BaY2Ga3.9GeO12:0.1Cr3+ with high internal quantum efficiency (98%) and thermal stability (90.2%@423K) is obtained via the substitution of CaO8 with bigger BaO8 dodecahedrons, which is attributed to variations in the lattice environment of Cr3+. Meanwhile, controllable emission tuning from 780 to 708 nm and enhanced luminescence performance are achieved due to the cation substitution can reduce the production of Cr4+ and modulate the lattice occupancy of the Cr3+ ions, and the enhancement of metal‐ligand interactions resulting in the enhancement of the crystal field and the breaking of the forbidden d‐d transition of Cr3+. The proof‐of‐concept demonstration of the pakchoi lighting experiment reveals the great potential of BaY2Ga3.9GeO12:Cr3+ phosphor in stimulating plant growth and pushing the yield. These results demonstrate the feasibility of cationic substitution to optimize the optical performance of Cr3+‐doped phosphors, providing an alternative strategy for designing efficient far‐red light sources for plant lighting.
Bioactive Molecules from Lignocellulose‐Derived Platform Chemicals
Authors: Qiang Guorui , Ansari Mohd Farhan , Sun Zhuohua , Elangovan Saravanakumar
Published: October 2024

The ever‐increasing prevalence of diseases and inadequate resources on Earth are threats to society. Biomass is an abundant resource, and bioactive compounds produced from biomass are environmentally benign in contrast to conventional chemical synthesis methods, which frequently depend on non‐renewable resources. In addition, the functionalized monomers from biomass allow the atom economical synthesis of bioactive molecules. This review aims to provide insight into the synthesis of bioactive molecules from the lignocellulose‐derived platform chemicals. Existing methodology and catalytic systems are summarized for the synthesis of targeted bioactive molecules from cellulose, hemicellulose, and lignin‐derived platform chemicals. The biological activities of bioactive molecules obtained from biomass, such as antioxidant, anti‐inflammatory, and anticancer properties, are discussed.
Microglial DBP Signaling Mediates Behavioral Abnormality Induced by Chronic Periodontitis in Mice
Authors: Cao Ting , Tian Dan , Wang Si‐Ying , Pan Yue , Xia Zhi‐Xuan , Chen Wei‐Kai , Yang Shao‐Wei , Zeng Qing‐Quan , Zhao Yue‐Ling , Zheng Ling , Li Ning , Lai Zhong‐Meng , Luo Yi‐Xiao , Shen Zu‐Cheng
Published: October 2024

Several lines of evidence implicate that chronic periodontitis (CP) increases the risk of mental illnesses, such as anxiety and depression, yet, the associated molecular mechanism for this remains poorly defined. Here, it is reported that mice subjected to CP exhibited depression‐like behaviors and hippocampal memory deficits, accompanied by synapse loss and neurogenesis impairment in the hippocampus. RNA microarray analysis disclosed that albumin D‐site‐binding protein (DBP) is identified as the most prominently upregulated target gene following CP, and in vivo and in vitro immunofluorescence methods showed that DBP is preferentially expressed in microglia but not neurons or astrocytes in the hippocampus. Interestingly, it is found that the expression of DBP is significantly increased in microglia after CP, and knockdown of microglial DBP ameliorated the behavioral abnormality, as well as reversed the synapse loss and hippocampal neurogenesis damage induced by CP. Furthermore, DBP knockdown improved the CP‐induced hippocampal inflammation and microglial polarization. Collectively, these results indicate a critical role of DBP in orchestrating chronic periodontitis‐related behavioral abnormality, hippocampal synapse loss and neurogenesis deficits, in which the microglial activation may be indispensably involved.