The geometric curvature of the spine during the sirshasana,the yoga’s headstand     

Mário Hebling Campos  Nayane Martins Giraldi  Paulo Gentil  Claudio Andre Barbosa de Lira  Carlos A. Vieira  Marcelo Costa de Paula 《Journal of sports sciences》2017,35(12):1134-1141

This study analysed the behaviour of the geometric curvature of the spine during sirshasana. The position of dorsal retroreflective markers was computed via stereophotogrammetric analysis in six males and five females (29.4 ± 8.8 years, 63.0 ± 11.4 kg, 1.66 ± 0.08 m [average ± standard deviation]). The spinal points were projected onto the sagittal and frontal planes of the trunk, a polynomial was fitted to the data and the two-dimensional geometric curvature was quantified. The inferior lumbar lordosis decreased compared to the orthostatic position and gait, which may favour the posterior protrusion of the lumbar spinal nucleus pulposus in people with posterior herniation. The lateral deviation at the middle of the thoracic spine increases during sirshasana, which may reflect increased difficulties for postural control and spinal loads. It could be useful for promoting positive spinal structural and functional chronic adaptations for healthy participants, if the yoga programme is carefully planned and the spinal alignment is carefully monitored during a headstand. However, it may aggravate some spinal diseases, especially scoliosis.  相似文献   

… I ever loved thee,lady mine,and yet my love increases: Rhodian Portrait Ceramics and Cultural Dialogue in the Mediterranean     

Cristina Stancioiu 《Al-Masaq: Islam & the Medieval Mediterranean》2010,22(2):129-150

The medieval city of Rhodes kept a secure position as artistic and commercial crossroads, where pottery was the most intensely traded commodity. Here, I focus on a group of fifteenth-century ceramics decorated with profile busts of men and women excavated there, near the Orthodox Church of St. Spyridon. Used in a culturally complex urban centre, these vessels borrowed elements of design, and the concept of portrait-ceramics and love pots from Italy, where spouses and lovers exchanged such objects as ritual gifts. I explore the patronage, production, and function of these ceramics within the specifics of Rhodes, to see how they were suited to serve this cosmopolitan society governed by the Hospitaller Knights of St. John of Jerusalem, while displaying comparable feelings of power and (romantic) character common in Italian portraiture.  相似文献   

El desarrollo de la explicación de procesos biológicos: cómo entienden los niños la causa de una enfermedad y su curación     

Cristina Del Barrio 《Infancia y Aprendizaje》2013,36(42):81-95

Resumen

Partiendo de un interés por los aspectos cognitivos de la representación infantil de la enfermedad, se examinan los tipos de explicación causal acerca del origen, evolución y curación de la enfermedad, en 100 niños entre 4 y 13 años. Se observan diferencias estadísticamente significativas en el tipo de explicación causal encontrado en los distintos grupos de edad, desde una concepción de la relación causa-efecto estática, mágica y dominada por los índices perceptivos, hasta una concepción de la misma como un proceso dinámico en el que intervienen factores externos e internos al organismo. Sólo un 50% de los sujetos mayores (11–13 años) son capaces de dar una explicación fisiológica o psicofisiológica que refleje un razonamiento formal. Se discuten las implicaciones prácticas de este tipo de estudios, tanto en el campo de la clínica como en el de la educación para la salud.  相似文献   

A PSYCHOMETRIC EXAMINATION OF THE LEARNED HELPLESSNESS QUESTIONNAIRE IN A SAMPLE OF ITALIAN SCHOOL STUDENTS     

Luana Sorrenti  Pina Filippello  Sebastiano Costa  Caterina Buzzai 《Psychology in the schools》2015,52(9):923-941

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Fifteen years looking at the mirror: On the presence of PISA in education policy processes (Portugal, 2000‐2016)          下载免费PDF全文

Luís Miguel Carvalho  Estela Costa  Catarina Gonçalves 《European Journal of Education》2017,52(2):154-166

This article describes and discusses what happens when knowledge for policy generated within PISA is received by its target audience: what have the Portuguese policy actors been doing with PISA data and analysis when they consider, express and justify their choices? Drawing on previous and current studies, using interview materials and formal and informal policy documents, as well as texts published in the written press, the article analyses two main phenomena related to the reception of PISA and how this has evolved between 2001 and 2012 in Portugal: the consolidation of PISA's credibility as a source for policy processes and texts; the emergence of new actors and modes of intervention in the production of knowledge for national policy, drawing on PISA. Finally, it presents an analysis of the reception of PISA 2015 in the Portuguese media, focusing on the interventions by political actors in the Portuguese daily and weekly written press. Two main elements emerge from our content analysis as the main common elements of that reception: the consecration of PISA's credibility; and the practices of qualification and disqualification of educational policies and perspectives. The article concludes by emphasising the regulatory role of PISA in Portuguese policy processes and the relevant contribution played by the politics of reception in legitimising this role.  相似文献   

Semiotic and theoretic control in argumentation and proof activities     

Ferdinando Arzarello  Cristina Sabena 《Educational Studies in Mathematics》2011,77(2-3):189-206

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Concurrent and longitudinal neuropsychological contributors to written language expression in first and second grade students     

Stephen R. Hooper  Lara-Jeane Costa  Matthew McBee  Kathleen L. Anderson  Donna C. Yerby  Sean B. Knuth  Amy Childress 《Reading and writing》2011,24(2):221-252

The primary purpose of this study was to examine several key questions related to the neuropsychological contributors to early written language. First, can we develop an empirical measurement model that encompasses many of the neuropsychological components that have been deemed as important to the development of written language? Second, once derived, will the neuropsychological components of this model remain stable over first and second grades or will the model change in its composition? Third, will the strength of the relationships between neuropsychological components and writing outcomes be constant over time, or will the strength of the relationships change over time? Finally, will the derived empirical model show significant concurrent and predictive relationships with written expression? The sample included 205 first grade students recruited from a single school district who were followed into the second grade via two cohorts: Measures were aligned with major neuropsychological components as extracted from theoretical models of written expression and available empirical findings examining the neuropsychological contributors to writing in children. These domains included fine-motor speed, language, short-term memory, long-term memory, and various attention/executive functions including working memory. Confirmatory factor analyses (CFAs) and longitudinal structural equation modeling (SEM) methods documented that three core latent traits were present and stable at both grades 1 and 2: Fine-Motor, Language, and Attention/Executive Functions. The overall model was highly related to written expression and spelling at both grades 1 and 2, with the first grade latent traits accounting for 52 and 55% of the variance in second grade written expression and spelling, respectively. At both grades, the Language and Attention/Executive Functions latent traits were more highly associated with written expression and spelling than the Fine-Motor latent trait.  相似文献   

Theorising technology in education: an introduction     

Cristina Costa  Michael Hammond  Sarah Younie 《Technology, Pedagogy and Education》2019,28(4):395-399

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An assessment of a social–cognitive model of academic performance in mathematics in Argentinean middle school students     

Marcos Cupani  María Cristina Richaud de Minzi  Edgardo Raúl Pérez  Ricardo Marcos Pautassi 《Learning and individual differences》2010,20(6):659-663

This study tested a set of hypotheses derived from the model of academic achievement in mathematics of the Social Cognitive Career Theory in a sample of Argentinean middle school students. To this aim, 277 students (male and female; age: 13–15 years) were assessed using the following instruments: logical–mathematical self-efficacy scale, mathematics outcome expectations, mathematics performance goals, and mathematics ability test. All of these instruments had been adapted for use in Argentinean students. Academic achievement in mathematics (i.e., grades obtained on regular school exams) was the variable to be modeled through the path analysis technique. The analysis allowed identification of interrelations among the variables and identification of direct and indirect effects. Academic achievement in mathematics was partially explained by the model. Overall, the results support the theoretical postulates of Social Cognitive Career Theory.  相似文献   

Digital Publishing in Europe: a Focus on France,Germany, Italy and Spain     

Cristina Mussinelli 《Publishing Research Quarterly》2010,26(3):168-175

In this article we will provide a general overview of the situation of the digital publishing in Europe starting from the insights provided by the Editech conference, the international day of advanced study organized by the Italian Publishers Association and focused on the trends, perspectives and applications of technological innovation in publishing at an international level. It is the main Italian event dedicated to book publishing with the aim of helping publishers define their short- and medium-term digital strategies, while being aware of the opportunities and risks involved in the conversion to digital of their business model. The Editech 2010 main focus had been: the market and the national and international situation of digital publishing, the new buying and reading behaviors of consumers, e-books and content for e-readers and mobile devices, new production processes (XML, ePub, digital printing) and the distribution scenario and the diffusion of digital content.  相似文献