bluuebunny/crossref_metadata_2025 huggingface dataset:
Consistency and representativeness of integrated water vapour from ground-based GPS observations and ERA-Interim reanalysis
Authors: Bock Olivier , Parracho Ana C.
Published: July 2019

Abstract. This study examines the consistency and
representativeness differences of daily integrated water vapour (IWV) data
from ERA-Interim reanalysis and GPS observations at 120 global sites over a
16-year period (1995–2010). Various comparison statistics are analysed as a
function of geographic, topographic, and climatic features. A small (±1 kg m−2) bias is found in the reanalysis across latitudes (moist in
northern and southern midlatitudes and dry in the tropics). The standard
deviation of daily IWV differences is generally below 2 kg m−2 but
peaks in the northern and southern storm-track regions. In general, the
larger IWV differences are explained by increased representativeness errors,
when GPS observations capture some small-scale variability that is not
resolved by the reanalysis. A representativeness error statistic is proposed
which measures the spatiotemporal variability in the vicinity of the GPS
sites, based on reanalysis data at the four surrounding grid points. It
allows to predict the standard deviation of daily IWV differences with a
correlation of 0.73. In general, representativeness differences can be
reduced by temporal averaging and spatial interpolation from the four
surrounding grid points. A small number of outlying cases (15 sites) which
do not follow the general tendencies are further examined. It is found that
their special topographic and climatic features strongly enhance the
representativeness errors (e.g. steep topography, coastlines, and strong
seasonal cycle in monsoon regions). Discarding these sites significantly
improves the global ERA-Interim and GPS comparison results. The selection of
sites a priori, based on the representativeness error statistic, is able to detect 11
out of the 15 sites and improve the comparison results by 20 % to 30 %.
Retrieval of cloud properties from sky radiometer observed spectral zenith radiances
Authors: Khatri Pradeep , Iwabuchi Hironobu , Hayasaka Tadahiro , Irie Hitoshi , Takamura Tamio , Yamazaki Akihiro , Damiani Alessandro , Letu Husi , Kai Qin
Published: July 2019

Abstract. An optimal-estimation based algorithm to retrieve cloud optical thickness (COD) and cloud-particle effective radius (CER) from spectral zenith radiances observed by a narrow field of view (FOV) ground-based sky radiometer is developed. To further address the filter-degradation problem while analyzing data of long-term observation, an on-site calibration procedure is proposed, which is found to have a very good accuracy with respect to a standard procedure, i.e., a procedure of deriving calibration constants using a master instrument. An error evaluation study conducted by assuming errors in observation-based transmittances and ancillary data of water vapor concentration and surface albedo suggests that the errors in input data can influence retrieved CER more effectively than COD. Except for some narrow domains that fall within COD
Metamorphism of Arctic marine snow during the melt season.
Impact on albedo
Authors: Verin Gauthier , Dominé Florent , Babin Marcel , Picard Ghislain , Arnaud Laurent
Published: July 2019

Abstract. The energy budget of Arctic sea ice is strongly affected by the snow cover. Intensive sampling of snow properties was conducted near Qikiqtarjuak in Baffin Bay on typical landfast sea ice during two melt seasons in 2015 and 2016. The sampling included stratigraphy, vertical profiles of snow specific surface area (SSA), density and surface spectral albedo. Both seasons feature four main phases: I) dry snow cover, II) surface melting, III) ripe snowpack and IV) melt pond formation. Each of them was characterized by distinctive physical and optical properties. Highest SSA of 49.3 m2 kg−1 was measured during phase I on surface windslab together with a high broadband albedo of 0.87. The next phase was marked by alternative episodes of surface melting which dramatically decreased the SSA below 3 m2 kg−1 and episodes of snowfall reestablishing the pre-melt conditions. Albedo was highly time variable especially in the near-infrared with minimum values around 0.45 at 1000 nm. At some point, the melt progressed leading to a fully ripe snowpack composed of clustered rounded grains in phase III. Albedo began to decrease in the visible as snow thickness decreased but remained steady at longer wavelengths. Moreover, its spatial variability clearly appeared for the first time following snow depth heterogeneity. The impacts on albedo of both snow SSA and thickness were quantitatively investigated using a radiative transfer model. Comparisons between albedo measurements and simulations show that our data on snow physical properties are relevant for radiative transfer modeling. They also point out to the importance of the properties of the very surface snow layer for albedo computation, especially during phase II when several distinctive layers of snow superimposed following snowfalls, melt or diurnal cycles.
Marineras silenciosas. El rol náutico de las mujeres en las sociedades preestatales yámanas/kawésqar y massim
Authors: Moyano Di Carlo Julián
Published: July 2019

El papel de las mujeres en las actividades náuticas es una temática de estudio poco analizada en la literatura antropológica y arqueológica. Sin embargo, su análisis puede resultar fundamental para entender las dinámicas sociales que se configuraron alrededor de la tecnología naval. En este trabajo se propone que la restricción general de movilidad de las mujeres derivó en una menor presencia de las mismas en este tipo de actividades. Esta hipótesis se aborda a través del análisis etnográfico de dos sociedades en concreto: yámanas/kawésqar del extremo sur americano y massim de Papúa Nueva Guinea. Así también, se reflexiona en torno a las problemáticas y perspectivas arqueológicas de este fenómeno para su aplicación al ámbito de la prehistoria europea. Se concluye que la restricción de movilidad pudo estar vinculada a los procesos de gestación, parto y lactancia, sobre los cuales se crearon complejos procesos culturales que desvincularon a la mujer del mar desde un punto de vista simbólico. Pese a que estos resultados no pueden ser extrapolables consideramos que pueden servir para generar una reflexión teórica y metodológica que permita abordar el tema desde otra perspectiva en el futuro.
Green HRM and Green Business: A Proposed Model for Organizational Sustainability
Authors: Islam Mohammad Muzahidul , Islam Jahidul , Pervez A. K. M. Kanak , Nabi Nur
Published: July 2019

Nowadays, sustainability is a significant issue of concern to the people of every sphere of society such as the policy makers, researchers, entrepreneurs and corporate leaders to inspect any effective solution in the context of climatic change. Both green business and green Human Resources Management (HRM) are also experiencing successful innovative practices in the modern organization. Considering theseviews, the principalpurpose of this exploration was to discover the significance of both green business and green HRM for ensuring organizational sustainability. For this study, we have collected the required secondary data from various journals, articles and websites. Inmost of the earlier studies, green business functions and green HRM activities are considered separately toward organizational sustainability. In this article, we put forward a green business and green HRM model inclusively for organizationalsustainability in the light of shared value approach throught out the organization.The model is mainly focused on the sustainability of an organization through the help of ensuring green HRM practices and green entrepreneurship development in the industrial world.
Teacher’s Voices Crying in the School Wilderness: Involvement of Secondary School Teachers in Curriculum Development in Zambia
Authors: Mulenga Innocent Mutale , Mwanza Christine
Published: July 2019

In Zambia, curriculum development for primary and secondary schools is done centrally. The CurriculumDevelopment Centre (CDC), the institution placed with the responsibility of facilitating curriculum development,claims that the Zambian school curriculum is developed through a consultative and participatory approach throughcourse and subject panels where teachers and other stakeholders are represented. However, there has been noempirical evidence to suggest the roles that teachers, who are the major implementers of the same curricular, arerequired to play in the development process. This study therefore, sought to establish perceptions of secondaryschool teachers on their role in the curriculum development process in Zambia. The concurrent embedded design ofthe mixed methods approach was employed with the qualitative approach dominating the study while the quantitativewas used to add detail. Data from secondary school teachers was collected using questionnaires while interviewguides were used for Head teachers. Raw data collected from interviews and questionnaires was analyzed usingthemes and descriptive statistics and then arranged into significant patterns so as to easily interpret and understandthe essence of the data. The findings of the study clearly suggested that the majority of secondary school teachers inLusaka were willing to participate in the curriculum development process, especially in situational analysis, in theformulation of educational objectives, in setting up the curriculum project, and in the writing of curriculum materialssuch as textbooks. From the study it was concluded that teachers were aware of some of the roles that they couldplay in the curriculum development but were not adequately involved in the development process.
MRI Evaluation of Posterior Capsular Dehiscence After Posterior Approach Total Hip Arthroplasty
Authors: Allegra Paul R. , Nuño Ane U. , Barrera Carlos M. , McNamara Colin A. , Cohen-Levy Wayne B. , Rizzo Michael G. , Ezuddin Nisreen , Alba Jaime A. C. , Jose Jean
Published: July 2019

Introduction:

To our knowledge, no previous study has evaluated the use of MRI to diagnose posterior capsule dehiscence after posterior approach total hip arthroplasty (THA) with capsular repair and its association with postoperative posterior hip dislocation.

Methods:

A retrospective chart review of patients who underwent posterior approach THA with capsulotomy repair was performed. Patients were identified who subsequently underwent MRI, and these studies were evaluated for signs of posterior capsular disruption. Each chart was then evaluated for episodes of postoperative hip dislocation.

Results:

Six hundred seventy-five patients were included in the retrospective review. Thirty-two patients (17 women [aged 37 to 78 years] and 15 men [aged 34 to 80 years]) met the inclusion criteria. Fifteen patients of 32 (48.4%) developed posterior capsule dehiscence after repair (group 1). Seventeen patients of 32 (51.6%) did not have MRI evidence of posterior capsule dehiscence (group 2). In group 1, 2 patients of 15 (13.3%) experienced a posterior hip dislocation. No group 2 patients experienced a posterior hip dislocation. Overall, only 2 patients of 32 (6.3%) developed posterior hip dislocations. In group 1, 12 patients of 15 (80%) developed dehiscence at the lateral capsule margin at the greater trochanter suture repair site. The two patients in group 1 with posterior hip dislocations displayed MRI evidence of capsular dehiscence in this region. Two patients of 15 (13.3%) in group 1 demonstrated dehiscence at the central third of the posterior capsule, whereas 1 patient of 15 (6.6%) in group 1 demonstrated dehiscence at the medial/acetabular margin. No significant difference was found between the dislocation rates between groups 1 and 2 (P = 0.212). The distribution of capsular dehiscence (lateral, middle, and medial capsule) in group 1 was significant (P = 0.0006).

Discussion:

MRI can effectively diagnose capsular dehiscence in patients who have undergone posterior THA. Most repaired capsules failed in the lateral repair region. MRI offers the potential to identify patients with a higher risk of implant dislocation.

Level of Evidence:

Therapeutic level III
Tranexamic Acid in Patients With Cancer Undergoing Endoprosthetic Reconstruction: A Retrospective Review
Authors: Haase Douglas R. , Templeton Kimberly J. , Rosenthal Howard G. , Sweeney Kyle R.
Published: July 2019

Introduction:

Endoprosthetic reconstruction presents a significant risk of perioperative blood loss. Tranexamic acid (TXA) is an antifibrinolytic agent used to reduce blood loss in orthopaedic procedures. The safety and efficacy of TXA in arthroplasty are well documented. There is, however, a dearth of literature exploring the safety and efficacy of TXA in musculoskeletal oncology patients. This retrospective, comparative study explores the effects of TXA on perioperative blood loss, blood transfusion rates, venous thromboembolism (VTE) occurrence, and hospital stay in patients undergoing resection of an aggressive bone tumor and endoprosthetic reconstruction.

Methods:

For the study, charts from a total of 90 patients who underwent resection of an aggressive bone tumor and endoprosthetic reconstruction were reviewed; of these patients, 34 were in the TXA group and 56 in the non-TXA group. Study participants composed of a heterogeneous group of patients with primary bone sarcoma and metastatic osseous disease. Patients in the TXA group received 1 g of topical TXA administered into the wound bed before closure. The Hemoglobin Balance method was used to calculate blood loss. Patients were followed for 6 weeks.

Results:

Patients undergoing proximal femur replacement and distal femur replacement in the TXA group experienced a 796 and 687 mL reduction in 72-hour mean blood loss, respectively (P = 0.0003 and P = 0.006). Average blood transfusions decreased by 0.45 U of packed red blood cells per patient in the TXA group (P = 0.048) and transfusion incidence decreased by 21.1% compared with the non-TXA group (P = 0.04). Patients undergoing proximal femur replacement in the TXA group left the hospital 2.2 days earlier than those in the non-TXA group (P = 0.0004). No increase in VTE rate was observed with TXA use.

Discussion:

This study found results similar to total joint arthroplasty with regard to TXA's effect on perioperative blood loss, transfusion rates, hospital stay, and VTE occurrence. It provides initial data to support the efficacy of topical TXA use in this patient cohort.

Level of Evidence:

Level III, retrospective cohort study
Smart home system — modern technology used in single-family housing
Authors: Sulikowska Olga , Brzuzy Aneta
Published: July 2019

The study presents information about the intelligent house system along with the justification of the thesis that this technology can be used in single-family houses. The general characteristics of the system are given, which include the history of the creation and the essence of operation. Attention has been paid to lower energy consumption due to the use of technology, which makes it easier for buildings to meet the requirements of the European Parliament Directive 2010. The article describes the most important sub-functions, such as lighting, heating or fire-protection subsystem. Based on the functional layout of a single-family home, the analysis of the most important types of the system was carried out. The study states that smart home systems can be used not only at the construction stage, but also in existing buildings, without the need for interference in the walls.
Keywords: construction, modern technologies used in construction, smart home system.
Refining the Response-Frequency Measure of Media Habit – The role of time pressure
Authors: Schnauber-Stockmann Anna , Naab Teresa K.
Published: July 2019

Media habits attract growing attention in communication research. Therefore, valid measures of habit strength are needed. The response-frequency measure of media habit (RFMMH) provides an implicit approach. It does not rely on retrospective self-reports of the habitual character of a behavior. Participants are presented with vignettes referring to various goal situations and choose under time pressure script-based which media device they would use in the respective situation. Choosing the same device across the different goal situations indicates strong general habits. The present paper refines the RFMMH by testing different time pressure levels in a heterogeneous sample to identify the ideal amount of time pressure.
Internationale Gemeinschaft
Authors: Lindhof Matthias
Published: July 2019

This volume deals with the ‘international community’. Instead of asking for its factual existence, however, it reconstructs the political meaning of the concept itself, which is used regularly and quite effectively in the interpretation of international politics. Using a hermeneutical approach rooted in pragmatist social theory, it examines three speeches by prominent European political leaders in detail. The results point out the dual character of the concept: on the one hand, it is open enough to convey different conceptions of a just global order; on the other hand, analogously to a currency, it allows legitimacy for contrary political purposes to be ‘bought’.
Success of elite adolescent female runners in adulthood
Authors: Bahenský Petr
Published: July 2019

Every talented sportsperson should be developed by an optimal training load applied in order to achieve her limit performance capacity by training adequate to the given age, with no early specialization. This opinion has been confirmed by our study. Through an analysis of the performance capacity of the best female runners of the Czech Republic in youth categories and in adulthood, we examined the link between the performance capacity of female runners in adolescence and that in adulthood. Elite adolescent female runners achieved a considerably lower limit performance capacity in comparison with elite adult female runners. This is probably caused by accelerated performance development. Moreover, the former achieve the top performance level earlier than usual. While the age of the top performance capacity in the best adult female runners is 26.0±3.8 years for 800m, 25.0±3.1 years for 1,500m and 26.0±3.1 years for 3,000m, elite of U20 female runners reach their top performance capacity at the age of  21.1±3.1 for 800m, 21.0±3,4 for 1,500m and 22,0±3,5 for 3,000m, of U18 females at the age of 19.1±2.7 for 800m, 19.3±3.5 for 1,500m and 20.7±4.1 for 3,000m, and in case of U16 at 16.6±2.8 years for 800m, 18.0±4.2 years for 1,500m and 17.4±3.5 years for 3,000m. Only a small percentage of elite adolescent female runners is able to improve their performance in adulthood. The top performance capacity in the adolescent age does not vouch for the top performance capacity in adulthood nor is it a guarantee for an individual limit performance capacity.
Application of the Double Diamond framework to prepare the communication strategy of a great sports event
Authors: Jilka Michal
Published: July 2019

Any sports event is characterized by the process of planning, organization and implementation and evaluation itself. This system applies to both single and repetitive, small or larger sports events. The planning process itself applies to all components – sports, technical, financial, process-law, and marketing communications.There are several marketing communication goals, but they all focus on end-users, fans, their desires, needs and interests in each sporting event. To maximize the benefits of marketing communications, careful preparation and a creative concept in the editorial plan must be prepared.Different procedures are used to prepare the communication strategy. This article aims to introduce the universal Double Diamond framework, which was used to prepare the communication strategy on the web and social medias for the World Cup in biathlon in Nové Město na Moravě held from December 20 to December 23, 2018, to familiarize with the possibilities of using social tools networks and to present the results achieved with these instruments.This study describes the framework theoretically and then shows possible practical outputs from the whole process.
Modos de ler Filosofia: uma conversa com iniciantes e iniciados
Authors: Heuser Ester Maria Dreher
Published: July 2019

Com uma escrita direta ao leitor, como se fosse uma conversa com um iniciante ou iniciado em Filosofia, o artigo ocupa-se do gesto que qualquer um que se aproxima dela realiza. Trata-se do gesto de ler. Após tematizar a invenção da escrita e das bibliotecas, aborda alguns elementos próprios aos modos de ler Filosofia, quais sejam: descobrir os benefícios da solidão; ler devagar, atenta e desconfiadamente; ler levantando a cabeça para, então, quiçá, chegar a pensar – o maior desafio para qualquer um que deseja se relacionar com a Filosofia.
A Inserção do Estagiário na Escola e o Cuidado de Si de Michel Foucault
Authors: Padilha Jéssica Coimbra
Published: July 2019

Este artigo apresenta o conceito de cuidado de si de Michel Foucault visando relacioná-lo com a experiência de estágio na escola. Foucault empreende a formulação do conceito de cuidado de si a partir dos gregos, considerando o sentido da expressão “o eu do ser em formação”. Este emerge como um preceito fundamental do ponto de vista filosófico, mas significa também uma continuidade técnica dessa temática sobre “ocupar-se consigo mesmo”. Tendo em vista isso, o cuidado de si exige uma visão crítica em relação a si mesmo, fazendo um papel corretivo, o que torna-se de extrema importância na prática docente, ainda mais por estarmos diretamente relacionados com os alunos que são adolescentes, e é nessa etapa que estes  começam a pensar e a conversar sobre o conhecimento de si mesmo, sobre como guiar e como conduzir a vida. Por esse viés, temos uma dupla dimensão: a reflexão do estagiário com vista ao conceito de cuidado de si (relação mestre-discípulo) para com o aluno que está aprendendo a cuidar de si. O problema que move as reflexões aqui é o seguinte: é possível despertar o cuidado de si nos alunos e a si mesmo?
Filosofar com o cinema
Authors: Piasecki Daniel Donato
Published: July 2019

Uma das dificuldades encontradas no ensino da Filosofia, está na visualização do aluno do tema/problema abordado com o mundo, ou de outra maneira, a dificuldade se encontra na aproximação que o professor deve realizar entre o tema/problema e o mundo do aluno. Frente a esta dificuldade, a pesquisa pretende fundamentar a utilização do cinema para o processo de ensino-aprendizagem nas aulas de Filosofia no ensino médio, tendo como ponto de partida uma obra cinematográfica, não excluindo a importância da utilização de outros recursos, como o texto filosófico. Os objetivos da pesquisa são contribuir para a metodologia do ensino de Filosofia no ensino médio e relatar experiência no âmbito do PIBID Filosofia da UNICENTRO com a ferramenta investigada e proposta.
Estudo de materiais naturais para aplicação em isolamento térmico de edificações
Authors: Spinelli Rodrigo , Cambeiro Faustino PatiÃ±o , Konrad Odorico
Published: July 2019

As crises energéticas e os impactos climáticos revelaram a necessidade de se repensar a forma de projetar as edificações, que se apresentam como grandes geradores de gases causadores do efeito estufa e consumo de 40% da energia elétrica mundial. A ONU e diversos países vem redigindo recomendações e legislações sobre o tema, orientando a utilização de materiais adequados, visando a eficiência energética em edificações. Este estudo se desenvolveu a partir de uma metodologia de pesquisa bibliométrica, buscando por materiais de isolamento térmico para utilização em edificações, que possam substituir materiais convencionais que utilizam recursos não renováveis e poluentes no seu sistema de fabricação. Grande parte dos materiais naturais pesquisados, surgem oriundos de resíduos agrícolas, que podem ser tratados, e utilizados como material construtivo. Os estudos pesquisados apontam desempenho de condutividade térmica (λ) abaixo do recomendado para materiais isolantes (λ < 0,07 W/m.K). Assim, materiais que poderiam ser considerados resíduos, surgem como nova alternativa construtiva. Os estudos desenvolvidos a partir da casca de arroz (λ = 0,0464 W/m.K), folha de abacaxi (λ = 0,0380 W/m.K), bagaço de cana (λ = 0,0460 W/m.K) e sabugo de milho (λ = 0,0580 W/m.K) apresentam resultados importantes, além de serem alternativas viáveis para serem utilizadas no Brasil, por haver grandes áreas de plantio para estas culturas. Salienta-se a importância de se desenvolver pesquisas práticas da aplicabilidade destes materiais, bem como testes de resistência ao fogo e Avaliação do Ciclo de Vida (ACV).
L’Entente de liaison des marchés du carbone de la Western Climate Initiative : enjeux institutionnels et juridiques pour le Québec
Authors: Roch François , Papy Jacques
Published: July 2019

Les transformations de l’organisation de l’action collective de lutte contre les changements climatiques sont marquées par la présence grandissante des entités infraétatiques et non étatiques. C’est dans ce contexte que l’architecture du marché commun du carbone de la Western Climate Initiative a émergé. Elle repose sur l’Entente concernant l’harmonisation et l’intégration des programmes de plafonnement et d’échange de droits d’émission de gaz à effet de serre, que la Californie, le Québec et l’Ontario ont signée à l’automne 2017. L’architecture proposée dans cette Entente est-elle cependant à même de fournir au marché du carbone les fondations juridiques et institutionnelles nécessaires à sa maturation et à l’atteinte de ses objectifs environnementaux et économiques ? Dans une perspective québécoise, le présent article vise à faire ressortir de manière détaillée les fonctions institutionnelles de l’Entente de liaison et à mettre en lumière les enjeux juridiques soulevés par leur mise en oeuvre.
Herman Voaden’s Romantic Ecology: Settler Identity and the Canadian Sublime
Authors: Gray Nelson
Published: July 2019

If, in Jonathan Bate’s view, literary critics would be well served by turning their attentions to a “historical tradition of ecological consciousness,” one obvious starting point for critics of Canadian drama is with the writings of Herman Voaden. Voaden is well known to Canadian theatre scholars as a playwright and director who drew his creative inspiration from the “natural” world, and who, in the 1920s and 30s, viewed what he perceived as the Canadian wilderness as a crucial factor in the shaping of settler identity. Incorporating Bate’s advice, and drawing on insights from Northrop Frye, Val Plumwood, Christopher Manes, and Akira Lippit, this ecocritical study shows how an ecological consciousness came to the fore in Voaden’s writings and how, in his play Murder Pattern, he brings this to its most fully developed form, portraying elements in the more-than-human physical world, not as the ground for human action, but as actions in their own right: sublime agencies that measure human lives vis-a-vis the frailty of mortal desires.
“Where the Mysterious and the Undefined Breathes and Lives”: Kathleen Winter’s Annabel as Intersex Text
Authors: Chafe Paul
Published: July 2019

Kathleen Winter’s Annabel (2010) tells the story of Wayne Blake, a hermaphrodite born in the village of Croydon Harbour on the southeast Labrador coast. In this land of extremes, Wayne’s body defies classification, and its multiplicity not only signifies “the emptiness of signs” but also unhinges the narratives of the people and the land that come into contact with him. His intersex body defies the social norms of his parents’ societies, the linguistic parameters of self-identification, and the supposed laws of nature by which so many of these characters live their lives. Yet as the novel progresses, almost everyone and everything in this landscape come to share Wayne’s multiplicity. As a result, this article argues, Annabel is an intersex text in which everything is revealed to be more than one thing at any given time, a philosophy of people and places also found in the ecocriticism of Glen A. Love and Lawrence Buell.
Educación y medios de comunicación. Beneficios y riesgos que proporcionan las Tecnologías de Información y Comunicación en los adolescentes españoles
Authors: Castro Clemente Concepción , Ponce de León Romero Laura
Published: July 2019

Desde que en la década de los años 90 irrumpieron en la sociedad las nuevas tecnologías de comunicación e información, Internet y teléfonos móviles, las formas de relacionarnos se transformaron, no sólo a nivel personal sino también en los ámbitos económicos, políticos, sociales y educativos, ahora más ágiles, desde cualquier lugar y en cualquier momento. Atractivos contextos de comunicación e intercambio de información que suponen un gran impacto en la sociedad por su rapidez en la difusión y accesibilidad desde cualquier lugar del mundo. Su evolución tecnológica ha sido constante y revolucionaria, ha logrado aumentar su capacidad de transmisión e incluir nuevos servicios como la videoconferencia, posibilidad de grabar imágenes, sonidos, textos, vídeos y descarga de archivos audiovisuales. En la población adolescente española es evidente la alta disposición y utilización de las TIC pero ¿qué usos hacen los menores de las nuevas tecnologías? Con esta finalidad, nos planteamos analizar la disponibilidad, formas y utilización de las TIC por la población escolar española. Los resultados muestran un elevado uso y disponibilidad de tecnologías por este segmento de población en el que destaca el alto grado de conexión a redes sociales y uso de la mensajería gratuita instantánea. En menor medida, su utilización representa para ellos una herramienta de aprendizaje en su formación educativa. Si bien el manejo de estas nuevas tecnologías constituye para nuestros jóvenes modernos instrumentos de socialización, también pueden establecer un lugar para las amenazas y conductas violentas, generándose así una nueva forma de agresión, el maltrato digital.
Medios de comunicación y educación o una relación compleja
Authors: Andrés Cabello Sergio
Published: July 2019

La educación es un tema que cuenta con su presencia en los medios de comunicación, pero también se da una relación compleja entre ambos. En primer lugar, porque parte de las noticias que aparecen están marcadas por la excepcionalidad, la negatividad y el catastrofismo. En segundo lugar, en España el debate sobre la educación está condicionado por la pugna ideológica y política. Además, hay que considerar también las transformaciones de los medios de comunicación, la llegada de Internet y el crecimiento de los medios digitales. Este artículo analiza de forma exploratoria la presencia de la educación en los medios de comunicación españoles, fundamentalmente los digitales. A partir de los estudios sobre la cuestión y de la revisión de las noticias aparecidas en los medios digitales en los últimos meses, se presentan los principales temas y su tratamiento y la consideración del sistema educativo, en general, en los medios. Como principales conclusiones, destacan el tratamiento parcial y superficial de la educación en los medios de comunicación, el peso de la batalla política y la influencia de actores y agentes, educativos o no, en ese proceso.
El periodista educativo y sus circunstancias: lo que el lector no ve
Authors: García Barnés Héctor
Published: July 2019

La prensa escrita generalista se ha visto sometida a cambios significativos durante la última década, tanto tecnológicos (la evolución de la prensa de papel a la digital) como económicos (modelos de financiación de la empresa periodística). Una evolución que no ha concluido y que ha condicionado el rol del periodista, tanto del propiamente educativo como de otra índole. Las condiciones del trabajo del profesional raramente son conocidas por el lector cuando se enfrenta a un artículo periodístico sobre educación. Este artículo tiene como objetivo enunciar algunas de las nuevas condiciones del periodista de prensa escrita y analizarlas para entender un poco mejor el proceso de creación de los artículos que llegan a los ojos del lector.
Estrategias de investigación en las Ciencias Sociales. Fundamentos para la elaboración de un Trabajo Fin de Grado o un Trabajo Fin de Máster. Félix Requena Santos y Luis Ayuso Sánchez (coords. y eds.)
Authors: Ruiz Sancho Ainara
Published: July 2019

El Espacio Europeo de Educación Superior (EEES) incorporó como novedad que todas las titulaciones, a partir de ese momento denominadas «Grados», incluyeran en sus planes de estudios la elaboración de un Trabajo Final de Grado y, en el caso de los Másteres, la elaboración de un Trabajo Final de Máster. Este libro recoge un conjunto de recomendaciones e indicaciones sobre la elaboración de un TFG y un TFM.
Un autoanálisis crítico para docentes de la enseñanza bilingüe: Ideología, pedagogía, acceso y equidad (IPAE)
Authors: Alfaro Cristina , Hernández Ana
Published: July 2019

El crecimiento exponencial de los programas de Educación de Lenguaje Dual (DLE) en los Estados Unidos ha hecho aún más evidente la apremiante necesidad de auto examiner críticamente la conciencia didáctica y fundamental sobre la equidad y la justicia social (Darder, 2015; Valenzuela, 2016). Un autoanálisis con el marco teórico que incluye los cuatro principios en la Ideología, Pedagogía, Acceso y Equidad (IPAE) puede impulsar a los educadores a examinar preguntas arduas que causan reflexión y razonamiento sobre sus creencias y didácticas. Históricamente, dadas ideologías han existido enraizadas profundamente en el monolingüismo, la asimilación y la falta de respeto al estudiante bilingüe. En cambio atribuye a la preparación del docente y al desarrollo profesional sobre la claridad ideological, el propósito pedagógico, el acceso a la educación y la transformación de la equidad en el plan de estudios o procesos de instrucción. En este artículo afirmamos como la conciencia crítica y la praxis conducen la equidad y son equivalentemente importantes en la formación docente, inclusivamente su conocimiento de técnicas y metodología para la alfabetización bilingüe.
Advanced Learning and Teaching Environments - Innovation, Contents and Methods. Núria Llevot Calvet y Olga Bernad Cavero (Eds.)
Authors: Vigo Arrazola Begoña
Published: July 2019

Actualmente, encuadrada en una sociedad cambiante, plural y diversa, e inmersa también en incesantes procesos de cambio y paradojas, la escuela y el profesorado ha de dar respuesta a múltiples y complejos desafíos. Uno de estos es equipar a docentes y alumnado con las competencias necesarias para afrontar con éxito un futuro incierto y ayudarlos a construir identidades flexibles y complejas en el sino de una ciudadanía democrática, que tiene su epicentro en la escuela. Y una de las herramientas para conseguir estos ambiciosos objetivos, son las tecnologías de la información y el conocimiento.
Diseño y redes sociales: ¿qué datos tenemos?
Authors: San Cornelio Gemma
Published: July 2019

Diseño y redes sociales. Parece una buena combinación, ¿verdad? Pues la verdad es que no es una relación que se haya estudiado a fondo desde la perspectiva académica. El próximo día 18 de junio hablaremos de ello en la Jornada Experiencias de transición: Oportunidades y Retos de los medios sociales en el Ámbito del diseño en el marco de la Barcelona Design Week. En este artículo realizo un breve avance.
SpeciesPrimer: A bioinformatics pipeline dedicated to the design of qPCR primers for the quantification of bacterial species
Authors: Dreier Matthias , Berthoud Hélène , Shani Noam , Wechsler Daniel , Junier Pilar
Published: July 2019

Background. Quantitative real-time PCR (qPCR) is a well-established method for detecting and quantifying bacteria, and it is progressively replacing culture-based diagnostic methods in food microbiology. High-throughput qPCR using microfluidics brings further advantages by providing faster results, decreasing the costs per sample and reducing errors due to automatic distribution of samples and reactants. In order to develop a high-throughput qPCR approach for the rapid and cost-efficient quantification of microbial species in a given system (for instance, cheese), the preliminary setup of qPCR assays working efficiently under identical PCR conditions is required. Identification of target-specific nucleotide sequences and design of specific primers are the most challenging steps in this process. To date, most available tools for primer design require either laborious manual manipulation or high-performance computing systems.

Results. We developed the SpeciesPrimer pipeline for automated high-throughput screening of species-specific target regions and the design of dedicated primers. Using SpeciesPrimer specific primers were designed for four bacterial species of importance in cheese quality control, namely Enterococcus faecium, Enterococcus faecalis, Pediococcus acidilactici and Pediococcus pentosaceus. Selected primers were first evaluated in silico and subsequently in vitro using DNA from pure cultures of a variety of strains found in dairy products. Specific qPCR assays were developed and validated, satisfying the criteria of inclusivity, exclusivity and amplification efficiencies.

Conclusion. In this work, we present the SpeciesPrimer pipeline, a tool to design species-specific primers for the detection and quantification of bacterial species. We use SpeciesPrimer to design qPCR assays for four bacterial species and describe a workflow to evaluate the designed primers. SpeciesPrimer facilitates efficient primer design for species-specific quantification, paving the way for a fast and accurate quantitative investigation of microbial communities.
Absence of complementary sex determination in Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae)
Authors: Liu Quan-quan , Zhou Jin-cheng , Zhang Chen , Dong Qian-jin , Ning Su-fang , Hui Dong
Published: July 2019

Over 60 species in Hymenoptera have been reported to possess a complementary sex determination (CSD) system. Under CSD, sex is determined by allelic complementation at one or several sex loci. But this mechanism is still uninvestigated in parasitoid wasp Trichogramma dendrolimi, one of the most important biocontrol agents widely used against Lepidopteran pests. We tested CSD in this species by conducting ten consecutive generations of inbreeding, to monitor both direct evidence (diploid male production) and indirect evidence (brood size, sex ratio, mortality). In total 475 males detected from this inbreeding regime, only one was determined as diploidy. The observed proportions of diploid male offspring significantly differed from expected values under CSD model involving up to ten independent loci, allowing us to safely reject CSD in T. dendrolimi. Meanwhile, the possibility of unviable diploid males was excluded by the absence of significant differences in brood size, offspring sex ratio and offspring mortality among different generations. Our study of sex determination in T. dendrolimi provides useful information for the mass rearing conditions in a biofactory and the quality improvement of this biocontrol agent. It also brings necessary background to further study of the sex determination in Trichogramma.
Perceived Sustainability Practices, Turnover Intentions, and Organizational Identification in Hotel Industries
Authors: Tinwala Raesah , Biswas Urmi Nanda
Published: July 2019

Research Question: The present study intends to study the effect of employees’ perception of their hotel’s sustainability practices and motive to undertake those practices on their identification with the organization and their intentions to quit. Motivation: Over the past few years, the hotel industry has heeded to the need of sustainability, but its effect on human resource outcomes needs attention. Earlier research reports that adopting sustainable practices enhances the reputation of the organisations, and positively impacts the employees’ organisational identification and intention to stay in the organisation. The bearings of such practices are seen in the expected cash flows and growth of the industry. Idea: The core idea behind this research was to investigate the effect of perceived sustainability activities and motive attribution on human resource outcomes. In the study, perceived sustainability activities and motive attribution were the independent variables whose effect was seen in the human resource outcomes, namely, organizational identification and intentions to quit. Data: The sample comprises 137 managers from star hotels of Vadodara and Ahmedabad. The data were collected over a period of 4 months. Tools: The survey questionnaire adopted already established scales on environmental sustainability, turnover intentions, organisational identification and motive attribution. The researchers added a few questions on social and economic sustainability to capture the whole concept of sustainable development. Findings: The findings of the study indicate employee welfare is a significant predictor of organizational identification and turnover intentions in hotel industries. Moreover, intrinsic, as well as extrinsic motive attribution are necessary to encourage employees to take ownership and retain it. Contribution: The study implies that hoteliers must channelize their resources to enhance employee welfare. Utmost care and support will be reciprocated in terms of higher organisational identification and lower turnover rates. Efforts must also be made to educate all the employees as regards the reasons for undertaking policies and actions. This will help them understand the organisational values and encourage them to align their values with the organisation. The way employees allocate reasons for conducting sustainability has implications for the judgement and actions of both managers and employees. It also plays a role in motivating them to involve themselves in sustainable activities. This research also suggests research areas for future studies. The researchers foresee the results of this research will be intriguing for policy makers and future researchers as knowledge of how employees inculcate sustainability in their actions proves the policy success rate.
Investigating the physiological responses of Pacific white shrimp Litopenaeus vannamei to acute cold-stress
Authors: Wang Zhenlu , Qu Yuexin , Zhuo Xiaolei , Li Junyi , Zou Jixing , Fan Lanfen
Published: July 2019

Background

Litopenaeus vannamei is one of the most important aquaculture shrimps in the world and low temperatures present a serious challenge to its survival, growth, and distribution.

Methods

To investigate their physiological responses during acute cold-stress, L. vannamei were treated under acute cooling conditions from 28 to 13 °C with a cooling rate of 2.5 °C/2 h and were maintained at 13 °C for 12 h. Plasma metabolite concentrations, histological changes, and relative gene expression related to the unfolded protein response (UPR) pathway and apoptosis in the hepatopancreas and the hemocytes of L. vannamei were investigated.

Results

The results revealed that the concentrations of triglycerides, total cholesterol, and total protein in plasma reached their peaks at 23 °C, and then decreased to their minimum values at 13 °C for 12 h. The activity of alkaline phosphatase in the plasma decreased to its lowest level while the activity of alanine aminotransferase increased to its highest level at 13 °C for 12 h. The hepatic tubules became necrotic and the basement membranes were ruptured at 13 °C for 12 h. The gene expression related to UPR and apoptosis in the hepatopancreas and hemocytes was significantly altered by the decrease in the temperature.

Discussion

The results revealed that acute cold-stress caused histological damage in the hepatopancreas of L. vannamei, reducing its immunity. The three UPR pathways were involved in the process of acute cold-stress and the response of activating transcription factor 6 to UPR may be faster and more directthan the IRE1 and PERK pathways.
Characterization and localization of cyclin B3 transcript in both oocyte and spermatocyte of the rainbow trout (Oncorhynchus mykiss)
Authors: Guan Wenzhi , Qiu Liangjie , Zhang Bo , Yao Jianbo , Xiao Qing , Qiu Gaofeng
Published: July 2019

B-type cyclins are regulatory subunits with distinct roles in the cell cycle. To date, at least three subtypes of B-type cyclins (B1, B2, and B3) have been identified in vertebrates. Previously, we reported the characterization and expression profiles of cyclin B1 and B2 during gametogenesis in the rainbow trout (Oncorhynchus mykiss). In this paper, we isolated another subtype of cyclin B, cyclin B3 (CB3), from a cDNA library of the rainbow trout oocyte. The full-length CB3 cDNA (2,093 bp) has an open reading frame (1,248 bp) that encodes a protein of 416 amino acid residues. The CB3 transcript was widely distributed in all the examined tissues, namely, eye, gill, spleen, brain, heart, kidney, stomach, skin, muscle, and, especially, gonad. Northern blot analysis indicated only one form of the CB3 transcript in the testis and ovary.In situhybridization revealed that, in contrast to cyclin B1 and B2 transcripts, CB3 transcripts were localized in the oocytes, spermatocytes, and spermatogonia. These findings strongly suggest that CB3 plays a role not only as a mitotic cyclin in spermatogonial proliferation during early spermatogenesis but also during meiotic maturation of the spermatocyte and oocyte in the rainbow trout.
Climate Change Implications for Rice Cultivation
Authors: Datta Prabir , Debnath Utpalendu , Panda C. K.
Published: July 2019

The inter-linkage between climate change and agriculture are multidimensional and complex. Crop response to climate change depends on the location specific baseline climate and soil condition thus; no consensus has emerged so far on how rice production will be affected by climate change impact in India. SRI methods have been implemented for more robust and healthy plants and the larger and deeper root systems. Climate change might have some adverse impacts on rice production that has been reflected in several literatures. As per Prof. M.S. Swaminathan, there will be a decline in Asian rice production due to climate change impact. International Rice Research Institute (IRRI) has indicated one-degree increase in temperature could cause a reduction of 10 percent in rice yield. Climate directly influences the physiological processes of rice plant’s growth, development and grain formation. Indirectly, climate influences the incidence of crop pests, diseases and hence, and grain yields. A skilful seasonal prediction will likely become significantly essential to provide the necessary information to guide agriculture management to mitigate the compounding impacts of soil moisture variability and temperature stress in rice cultivation.
Profitability of Watermelon (Citrillus lanatus) Marketing in Bauchi Metropolis of Bauchi State, Nigeria
Authors: Iroegbute U. K. , Nandi J. A. , Jibril S. A. , Mohammed I. , Barnabas T. M.
Published: July 2019

The study sought to determine the profitability and constraints to watermelon marketing in Bauchi metropolis of Bauchi State and a sample of 75 marketers were randomly selected from the markets and streets in the metropolis. Data were collected with the aid of structured questionnaire complemented with interview and were analyzed using descriptive statistics (mean and percentages) and farm budgeting technique. The results showed that all the marketers in Bauchi metropolis were male, with most (77.34%) within the age bracket of 21-40 while 56.0% of the marketers were married with household size of 1-5 person which constituted 74.67%. Most (89.34%) of the marketers had marketing experience of 1-10 years while 97.33% of the marketers had one form of education or the other. Furthermore, the result of the study revealed that water melon marketing was a profitable venture in the study area with N0.32k profit on every naira invested in the business. Despite the profit some constraints were encountered in the marketing of water melon, which include inadequate capital, followed by lack of credit facilities. It is therefore, recommended that the marketers should form association in order to access loans from financial institutions.