bluuebunny/crossref_metadata_2025_split huggingface dataset:
Parental mediation of the Internet use of Primary students: beliefs, strategies and difficulties
Authors: Bartau-Rojas Isabel , Aierbe-Barandiaran Ana , Oregui-González Eider 
Published: November 2017

The use of the Internet by children at an increasingly early age today constitutes a major challenge for families and schools, as well as affecting educational and social policy. This is a qualitative piece of research that analyzes parents’ beliefs, everyday practices and the difficulties they face in teaching their children the benefits and risks inherent in Internet use. The researchers used the discussion group technique, with four groups of parents of primary school children from four different schools. The results indicate that they share a pessimistic rather than an optimistic attitude towards Internet use among children in this age group, and perceive a number of difficulties when trying to foster children's responsible use of Internet. A wide range of parental control and mediation strategies were identified (laying down rules, organization of time and space for Internet use, limits and supervision (direct, agreedupon, non agreedupon and technical), along with various support strategies (parent and sibling modeling, diverse teaching strategies for stimulation and family communication) which, with the exception of technical supervision, they often use to educate their children and control their behavior in other areas, and which form part of their general parenting style. The conclusions point to the need to develop digital competence among parents, and there is some justification for educational intervention such as in promoting collaboration between families and schools.El uso de Internet de los niños y las niñas a edades cada vez más tempranas constituye un reto para las familias, las escuelas y la política educativa y social en la actualidad. Se presenta una investigación cualitativa cuyo objetivo es analizar las creencias, prácticas cotidianas y dificultades que afrontan los padres y las madres cuando tratan de enseñar a sus hijos e hijas los beneficios y riesgos de Internet. Se ha utilizado la técnica de los grupos de discusión con cuatro grupos de madres y padres de alumnado de Educación Primaria de cuatro centros educativos. Los resultados indican que comparten una concepción más pesimista que optimista sobre el uso de Internet a estas edades y que perciben diversas dificultades cuando tratan de promover su uso responsable. Se identifican diversas estrategias de mediación parental de control: establecimiento de normas, organización espaciotemporal de límites y supervisión (presencial directa, consensuada, no consensuada y técnica) y de apoyo (modelado parental, entre hermanos y diversas estrategias instructivas, de estimulación y comunicación familiar) que, a excepción de la supervisión técnica, habitualmente utilizan para educarles o controlar su comportamiento en otras áreas formando parte de su estilo general de parentalidad. Las conclusiones apuntan la necesidad de desarrollar la competencia parental digital y algunas implicaciones para la intervención educativa como promover la colaboración entre la familiaescuela.
Critical thinking of young citizens towards news headlines in Chile
Authors: Vernier Matthieu , Cárcamo Luis , Scheihing Eliana 
Published: November 2017

Strengthening critical thinking abilities of citizens in the face of news published on the web represents a key challenge for education. Young citizens appear to be vulnerable in the face of poor quality news or those containing nonexplicit ideologies. In the field of data science, computational and statistical techniques have been developed to automatically collect and characterize online news media in real time. Nevertheless, there is still not a lot of interdisciplinary research on how to design data exploration platforms supporting an educational process of critical citizenship. This article explores this opportunity through a case study analyzing critical thinking ability of students when facing news dealing with the social mobilization “No+APF”. From data collected through 4 online exercises conducted by 75 secondary school students, 55 university students and 25 communication specialists, we investigate to what extent young citizens are able to classify news headlines and ideological orientation of news media outlets. We also question the influence of the media’s brand name and the subjectivity of each participant in regards to the social mobilization “No+APF”. The results underline the importance of group work, the influence of the brand name and the correlation between criticalthinking abilities and having a defined opinion.
Fortalecer el pensamiento crítico de ciudadanos frente a noticias de Internet representa un desafío educativo clave. Los jóvenes ciudadanos parecen vulnerables frente a noticias de mala calidad u orientaciones ideológicas poco explícitas. Desde la ciencia de datos se desarrollan técnicas informáticas y estadísticas para recopilar prensa digital en tiempo real y caracterizarla automáticamente. Sin embargo, existe poca investigación interdisciplinar para diseñar plataformas de exploración de datos al servicio de un proceso educativo de ciudadanía crítica. Este artículo investiga esa oportunidad, mediante un estudio de caso en Chile que analiza la capacidad crítica del alumnado frente a noticias de un hecho social relevante: la movilización social «No+AFP». A partir de cuatro tareas en línea ?realizadas por 75 estudiantes de secundaria, 55 estudiantes universitarios y 25 especialistas en comunicación? preguntamos en qué medida los jóvenes son capaces de calificar titulares de prensa y orientaciones ideológicas de medios de comunicación. Por otra parte, analizamos la influencia de la marca del medio y de la subjetividad que, frente al movimiento social «No+AFP», imprime cada participante al pensamiento crítico. Los resultados obtenidos destacan la relevancia del trabajo en grupo, la influencia de la marca del medio de prensa y la correlación entre tener una opinión definida y la capacidad crítica.
Portrait de l’artiste en chat de télévision : Topor et Téléchat (1977-1986)
Authors: Le Pajolec Sébastien 
Published: November 2017

Téléchat est un programme de cinq minutes dont les 234 épisodes ont d’abord été diffusés pendant trois saisons, sur Antenne 2, entre 1983 et 1986. Imaginée par Henri Xhonneux et Roland Topor, l’émission reprend le dispositif du journal télévisé, avec deux marionnettes à la présentation : Groucha, un chat plâtré de la patte gauche, et Lola, une autruche au décolleté pigeonnant. En étudiant les trente premiers épisodes de la série, soit près de deux mois de programmation, nous avons voulu restituer les multiples facettes d’un programme à la fois connu et rarement analysé. Après avoir examiné les logiques de production, de diffusion et de réception propres à Téléchat , nous avons cherché à mettre au jour non seulement ses discours sur la télévision, mais aussi ses représentations ironiques, ludiques et poétiques du monde social.
SATB1 Conditional Knockout Results in Sjögren’s Syndrome in Mice
Authors: Tanaka Yuriko , Sotome Takehiko , Inoue Akiko , Mukozu Takanori , Kuwabara Taku , Mikami Tetuo , Kowhi-Shigematsu Terumi , Kondo Motonari 
Published: November 2017

Abstract
Sjögren’s syndrome (SS) is an autoimmune disease in which exocrine tissues are affected by cellular and humoral immunity. As a result, the salivary and lacrimal glands of patients with SS are damaged, leading to xerostomia (dry mouth) and keratoconjunctivitis sicca (dry eyes). Because experimental approaches to investigate SS pathogenesis in human patients are limited, development of a mouse model is indispensable for understanding the disease. In this study, we show that special AT-rich sequence binding protein-1 conditional knockout (SATB1cKO) mice, in which the SATB1 gene is specifically deleted from hematopoietic cells, develop SS by 4 wk of age, soon after weaning. Female mice presented an earlier onset of the disease than males, suggesting that female SATB1cKO mice are more susceptible to SS. T cell–dominant immune cell infiltration was observed in the salivary glands of 4 wk old SATB1cKO mice, and the frequency of B cells gradually increased as the mice aged. Consistently, levels of anti-SSA and anti-SSB Abs were increased around 8 wk of age, after salivary production reached its lowest level in SATB1cKO mice. These results suggest that SATB1cKO mice can be a novel SS model, in which the progression and characteristics of the disease resemble those of human SS.
Copper Regulates Maturation and Expression of an MITF:Tryptase Axis in Mast Cells
Authors: Hu Frisk Jun Mei , Kjellén Lena , Kaler Stephen G. , Pejler Gunnar , Öhrvik Helena 
Published: November 2017

Abstract
Copper has previously been implicated in the regulation of immune responses, but the impact of this metal on mast cells is poorly understood. In this article, we address this issue and show that copper starvation of mast cells causes increased granule maturation, as indicated by higher proteoglycan content, stronger metachromatic staining, and altered ultrastructure in comparison with nontreated cells, whereas copper overload has the opposite effects. In contrast, copper status did not impact storage of histamine in mast cells, nor did alterations in copper levels affect the ability of mast cells to degranulate in response to IgER cross-linking. A striking finding was decreased tryptase content in mast cells with copper overload, whereas copper starvation increased tryptase content. These effects were associated with corresponding shifts in tryptase mRNA levels, suggesting that copper affects tryptase gene regulation. Mechanistically, we found that alterations in copper status affected the expression of microphthalmia-associated transcription factor, a transcription factor critical for driving tryptase expression. We also found evidence supporting the concept that the effects on microphthalmia-associated transcription factor are dependent on copper-mediated modulation of MAPK signaling. Finally, we show that, in MEDNIK syndrome, a condition associated with low copper levels and a hyperallergenic skin phenotype, including pruritis and dermatitis, the number of tryptase-positive mast cells is increased. Taken together, our findings reveal a hitherto unrecognized role for copper in the regulation of mast cell gene expression and maturation.
Impact of the 4 April 2014 Saharan dust outbreak on the photovoltaic power generation in Germany
Authors: Rieger Daniel , Steiner Andrea , Bachmann Vanessa , Gasch Philipp , Förstner Jochen , Deetz Konrad , Vogel Bernhard , Vogel Heike 
Published: November 2017

Abstract. The importance for reliable forecasts of incoming solar radiation is growing rapidly, especially for those countries with an increasing share in photovoltaic (PV) power production. The reliability of solar radiation forecasts depends mainly on the representation of clouds and aerosol particles absorbing and scattering radiation. Especially under extreme aerosol conditions, numerical weather prediction has a systematic bias in the solar radiation forecast. This is caused by the design of numerical weather prediction models, which typically account for the direct impact of aerosol particles on radiation using climatological mean values and the impact on cloud formation assuming spatially and temporally homogeneous aerosol concentrations. These model deficiencies in turn can lead to significant economic losses under extreme aerosol conditions. For Germany, Saharan dust outbreaks occurring 5 to 15 times per year for several days each are prominent examples for conditions, under which numerical weather prediction struggles to forecast solar radiation adequately. We investigate the impact of mineral dust on the PV-power generation during a Saharan dust outbreak over Germany on 4 April 2014 using ICON-ART, which is the current German numerical weather prediction model extended by modules accounting for trace substances and related feedback processes. We find an overall improvement of the PV-power forecast for 65 % of the pyranometer stations in Germany. Of the nine stations with very high differences between forecast and measurement, eight stations show an improvement. Furthermore, we quantify the direct radiative effects and indirect radiative effects of mineral dust. For our study, direct effects account for 64 %, indirect effects for 20 % and synergistic interaction effects for 16 % of the differences between the forecast including mineral dust radiative effects and the forecast neglecting mineral dust.
Profiling water vapor mixing ratios in Finland by means of a Raman lidar, a satellite and a model
Authors: Filioglou Maria , Nikandrova Anna , Niemelä Sami , Baars Holger , Mielonen Tero , Leskinen Ari , Brus David , Romakkaniemi Sami , Giannakaki Elina , Komppula Mika 
Published: November 2017

Abstract. We present tropospheric water vapor profiles measured with a Raman lidar during three field campaigns held in Finland. Co-located radio soundings are available throughout the period for the calibration of the lidar signals. We investigate the possibility of calibrating the lidar water vapor profiles in the absence of co-existing on-site soundings using water vapor profiles from the combined Advanced InfraRed Sounder (AIRS) and the Advanced Microwave Sounding Unit (AMSU) satellite product; the Aire Limitée Adaptation dynamique Développement INternational and High Resolution Limited Area Model (ALADIN/HIRLAM) numerical weather prediction (NWP) system, and the nearest radio sounding station located 100 km away from the lidar site (only for the permanent location of the lidar). The uncertainties of the calibration factor derived from the soundings, the satellite and the model data are  < 2.8, 7.4 and 3.9 %, respectively. We also include water vapor mixing ratio intercomparisons between the radio soundings and the various instruments/model for the period of the campaigns. A good agreement is observed for all comparisons with relative errors that do not exceed 50 % up to 8 km altitude in most cases. A 4-year seasonal analysis of vertical water vapor is also presented for the Kuopio site in Finland. During winter months, the air in Kuopio is dry (1.15±0.40 g kg−1); during summer it is wet (5.54±1.02 g kg−1); and at other times, the air is in an intermediate state. These are averaged values over the lowest 2 km in the atmosphere. Above that height a quick decrease in water vapor mixing ratios is observed, except during summer months where favorable atmospheric conditions enable higher mixing ratio values at higher altitudes. Lastly, the seasonal change in disagreement between the lidar and the model has been studied. The analysis showed that, on average, the model underestimates water vapor mixing ratios at high altitudes during spring and summer.
Regional Antarctic snow accumulation over the past 1000 years
Authors: Thomas Elizabeth R. , van Wessem J. Melchior , Roberts Jason , Isaksson Elisabeth , Schlosser Elisabeth , Fudge Tyler J. , Vallelonga Paul , Medley Brooke , Lenaerts Jan , Bertler Nancy , van den Broeke Michiel R. , Dixon Daniel A. , Frezzotti Massimo , Stenni Barbara , Curran Mark , Ekaykin Alexey A. 
Published: November 2017

Abstract. Here we present Antarctic snow accumulation variability at the regional scale over the past 1000 years. A total of 79 ice core snow accumulation records were gathered and assigned to seven geographical regions, separating the high-accumulation coastal zones below 2000 m of elevation from the dry central Antarctic Plateau. The regional composites of annual snow accumulation were evaluated against modelled surface mass balance (SMB) from RACMO2.3p2 and precipitation from ERA-Interim reanalysis. With the exception of the Weddell Sea coast, the low-elevation composites capture the regional precipitation and SMB variability as defined by the models. The central Antarctic sites lack coherency and either do not represent regional precipitation or indicate the model inability to capture relevant precipitation processes in the cold, dry central plateau. Our results show that SMB for the total Antarctic Ice Sheet (including ice shelves) has increased at a rate of 7 ± 0.13 Gt decade−1 since 1800 AD, representing a net reduction in sea level of ∼ 0.02 mm decade−1 since 1800 and ∼ 0.04 mm decade−1 since 1900 AD. The largest contribution is from the Antarctic Peninsula (∼ 75 %) where the annual average SMB during the most recent decade (2001–2010) is 123 ± 44 Gt yr−1 higher than the annual average during the first decade of the 19th century. Only four ice core records cover the full 1000 years, and they suggest a decrease in snow accumulation during this period. However, our study emphasizes the importance of low-elevation coastal zones, which have been under-represented in previous investigations of temporal snow accumulation.
Implementation of methane cycling for deep-time global warming simulations with the DCESS Earth system model (version 1.2)
Authors: Shaffer Gary , Fernández Villanueva Esteban , Rondanelli Roberto , Pedersen Jens Olaf Pepke , Olsen Steffen Malskær , Huber Matthew 
Published: November 2017

Abstract. Geological records reveal a number of ancient, large and rapid negative excursions of the carbon-13 isotope. Such excursions can only be explained by massive injections of depleted carbon to the Earth system over a short duration. These injections may have forced strong global warming events, sometimes accompanied by mass extinctions such as the Triassic-Jurassic and end-Permian extinctions 201 and 252 million years ago, respectively. In many cases, evidence points to methane as the dominant form of injected carbon, whether as thermogenic methane formed by magma intrusions through overlying carbon-rich sediment or from warming-induced dissociation of methane hydrate, a solid compound of methane and water found in ocean sediments. As a consequence of the ubiquity and importance of methane in major Earth events, Earth system models for addressing such events should include a comprehensive treatment of methane cycling but such a treatment has often been lacking. Here we implement methane cycling in the Danish Center for Earth System Science (DCESS) model, a simplified but well-tested Earth system model of intermediate complexity. We use a generic methane input function that allows variation in input type, size, timescale and ocean–atmosphere partition. To be able to treat such massive inputs more correctly, we extend the model to deal with ocean suboxic/anoxic conditions and with radiative forcing and methane lifetimes appropriate for high atmospheric methane concentrations. With this new model version, we carried out an extensive set of simulations for methane inputs of various sizes, timescales and ocean–atmosphere partitions to probe model behavior. We find that larger methane inputs over shorter timescales with more methane dissolving in the ocean lead to ever-increasing ocean anoxia with consequences for ocean life and global carbon cycling. Greater methane input directly to the atmosphere leads to more warming and, for example, greater carbon dioxide release from land soils. Analysis of synthetic sediment cores from the simulations provides guidelines for the interpretation of real sediment cores spanning the warming events. With this improved DCESS model version and paleo-reconstructions, we are now better armed to gauge the amounts, types, timescales and locations of methane injections driving specific, observed deep-time, global warming events.
From Covenant to Contract: Changing Conceptions of Public Research Universities in American Society
Authors: Weerts David J. 
Published: November 2017

Abstract
Abstract Public research universities face several challenges related to declining state support and growing public distrust. Many leaders have responded with calls to “renew the covenant” between research universities and society. This paper examines the context in which such covenants might be understood, exploring the cultural, social, and intellectual movements that have shaped the role of the modern public research university. This analysis suggests that early public research universities were situated within a broad Protestant tradition which maintained a social cohesion with the public in the midst of their growing research ambitions. With the academic revolution of the twentieth century, institutions lost connection with society and the state-university relationship became one of a legalized, social contract. The move from covenant to contract is reflected in tuition policy, performance-funding, and governance reforms. Implications of this shift are discussed in the context of creating a good society.
From Jalsah to Jalsā: Music, Identity, and (Gender) Transitioning at a Hījṛā Rite of Initiation
Authors: Roy Jeff 
Published: November 2017

Abstract
This article investigates the connections among music making, identity, and belonging within the context of a jalsā, a celebratory rite of initiation for a hījṛā (South Asian “third gender” individual) entering her gharānā (family). Drawing connections to Ali Jihad Racy’s (2004) analysis of ṭarab (ecstasy) performance in the West Asian jalsah (informal gathering), the article reveals how music making within the larger architecture of the jalsā—in particular, the liminal period in which the hījrā “passes through” to become nirvāṇ (liberated)—enables the visceral embodiment of values concerning hījṛā social transitioning and self-understanding. I argue that the discourses and performance practices involved in becoming hījṛā enact a strategic essentialism through the sanctification of different relational configurations of identity within gharānedar society. This gives shape to a symbolic representation about what it means to be hījṛā that is ambiguously cited, multiplicative, and materially unavailable for those from outside the community who seek to enter, define, or otherwise control it. This article is accompanied by a one-hour film (http://www.ethnomusicologyofthecloset.com/jalsa, password: pehchaan) that was edited to convey the physical and emotional sensation of a nirvāṇ hījṛā’s journey.
Engendering Musical Ethnography
Authors: Appert Catherine M. 
Published: November 2017

AbstractBetween 2007 and 2015, in a series of trips ranging in length from two to ten months, I conducted ethnographic research with rappers in Dakar, Senegal. Drawing on those experiences, this article explores how primary modes of ethnographic knowing and being are nurtured outside spaces of musical performance and asks how a consideration of gendered moments that are not, per se, research moments—the time spent with families, the eating of meals, the engagement with social norms of greeting and hospitality, but also the often fraught encounters with strangers—might shift our understandings of the nature of the musical field site. Modeling a gendered ethnography of music, I make the following claims: First, models of ethnomusicological fieldwork that center on friendship and participant observation, in their explicit emphasis on collaborative musical performance, implicitly spatialize musical field sites even as they redefine them as experiential. Second, such models prioritize music-centered relationships while obscuring the complexity of power dynamics at play in intercultural research. Finally, both the experiential field site and ethnomusicological research models—and the overlaps and disjunctions between them—actively engender the researcher in ways that necessarily inform fieldwork outcomes.