The abnormal, uncontrolled production of blood cells in the bone marrow causes hematological malignancies which are common and tend to have a poor prognosis. These types of cancers may alter the hemodynamics of bone marrow. Therefore, noninvasive methods that measure the hemodynamics in the bone marrow have a potential impact on the earlier diagnosis, more accurate prognosis, and in treatment monitoring. In adults, the manubrium is one of the few sites of bone marrow that is rich in hematopoietic tissue and is also relatively superficial and accessible. To this end we have combined time resolved spectroscopy and diffuse correlation spectroscopy to evaluate the feasibility of the noninvasive measurement of the hemodynamics properties of the healthy manubrium in 32 subjects. The distribution of the optical properties (absorption and scattering) and physiological properties (hemoglobin concentration, oxygen saturation and blood flow index) of this tissue are presented as the first step toward investigating its pathology.
Video viewing can be a valuable resource to expose students to large quantities of input so they can improve their vocabulary and content comprehension. Most studies so far have used short clips and have not explored in much detail the effects of individual differences (IDs) such as aptitude, listening skills and vocabulary size. This paper aims to address this gap by exposing 57 Grade-10 EFL learners and 60 university students to captioned video. On a weekly basis over an academic term, all learners were pre-taught a set of target words (TWs); half of them (the experimental group) were additionally shown captioned episodes from a TV series containing the TWs. All learners were pre-and posttested on the TW forms and meanings. Results revealed significant differences between experimental and control groups in the learning of TWs in the high school population, but not among university participants. A main effect for proficiency was observed on the learning scores for both TW forms and meanings. However, language aptitude was only a significant factor for TW meanings. Results are discussed regarding how video viewing and these IDs mediate vocabulary learning.
the supposed stability of language aptitude. The participants in this study are bilingual Catalan-Spanish children in grades from 3 to 7. 325 participants took the MLAT-ES and 304 participants took its Catalan version (MLAT-EC). The analyses of the children's performance in both tests suggest that the higher the grade, the higher the final score. However, the difference between the means of the total score is consistently larger between grade 3 and 4 than between the other grades. Besides, this increase seems to plateau between grade 6 and 7. Results are discussed in relation to the influence that children's age and cognitive development in middle childhood seem to have on children's language aptitude development.
Young learners’ language aptitude is understudied due to a lack of tests covering this period of life. Young learners, in contrast with adults, are still acquiring their L1. Consequently, a language-dependent aptitude test should be carefully designed for it to be valid. An additional challenge is found when the young learners who are to take the test are bilingual, as is the case of the Catalan/Spanish community in Catalonia. This chapter aims at explaining the process to translate and adapt the Modern Language Aptitude Test – Elementary in Spanish (MLAT-ES - Stansfield et al., 2005) into Catalan (MLAT-EC – Suárez, 2010) so as to obtain a valid aptitude measure across grades. The results show that despite the linguistic proximity between Catalan and Spanish, several issues had to be considered, not only linguistic and cultural but also the learners' age range for the test is addressed to.
Audiovisual platforms like YouTube facilitate the introduction of informal learning practices for their pedagogical exploitation both in class and online. One such practice is the creation of a BookTuber community for recommending books, thus making it possible for students to engage in an out-of-class community where common interests can be shared. In this innovations in practice article, we present a project carried out with two English for Specific Purposes (ESP) groups of Media Studies of the University of Barcelona. The aim of this project was to determine features that make a BookTuber a good communicator so students could apply these features to their own BookTube video practice. Students could then use these features as a guideline for peer-review comments published on YouTube and the creation of an online BookTuber community. Students were first introduced to the concept of intertextuality in order to understand how it fosters connections among audiovisual consumers. The BookTuber community was then presented and the students viewed and analysed several BookTube videos with the objective of creating an evaluation rubric identifying the key aspects of a good BookTuber. The students then created their own BookTube video and uploaded it onto YouTube. They were also required to watch at least two videos created by their peers, post comments that considered key aspects included in the evaluation rubric and express their personal reactions to and opinions of the videos. In addition, an extended version of the peer-review was also required to achieve subject credits. This twofold feedback allowed for the practice of two discourse styles for the same content: informal (for YouTube) and formal (for the teacher). As a result, students had firsthand experience of becoming a BookTuber while developing their critical thinking skills for peer evaluation and academic and professional purposes of career development.
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