Developing Teaching-Specific Spanish Competencies in Bilingual Teacher Education: Toward a Culturally,Linguistically, and Professionally Relevant Approach

The emergence of K-12 bilingual/dual-language schools¹¹ Although we recognize the distinction between “dynamic” forms of bilingualism characteristic of bilingual education programs and “compartmentalized” forms generally characteristic of “dual-language” programs (García, 2014), in this article we employ the term “bilingual/dual-language education” to include both programmatic approaches and to reclaim the term “bilingual.”View all notes in the United States require bilingual teacher education programs across the nation continue to “build on the language strengths”²² See Zentella (2005).View all notes of bilingual teacher candidates and provide them with ample opportunities to acquire the language competencies needed for teaching content-area knowledge across the bilingual curriculum. Although the need to prepare linguistically qualified bilingual/dual-language teachers is relevant to all language programs comprising the bilingual teacher education field, in this article the authors describe a culturally, linguistically, and professionally relevant approach for developing the teaching-specific Spanish language competencies of future bilingual teachers. Educating the new generation of linguistically qualified bilingual educators calls for an engaged and responsive pedagogy that will prepare teachers to orchestrate K-12 teaching and learning experiences where languages (Spanish, in this particular case) function as multidimensional bodies encompassing and empowering the cultures and funds of knowledge teachers and students bring to the classroom.     

Evaluating collaborative filtering recommendations inside large learning object repositories

Collaborative filtering (CF) algorithms are techniques used by recommender systems to predict the utility of items for users based on the similarity among their preferences and the preferences of other users. The enormous growth of learning objects on the internet and the availability of preferences of usage by the community of users in the existing learning object repositories (LORs) have opened the possibility of testing the efficiency of CF algorithms on recommending learning materials to the users of these communities. In this paper we evaluated recommendations of learning resources generated by different well known memory-based CF algorithms using two databases (with implicit and explicit ratings) gathered from the popular MERLOT repository. We have also contrasted the results of the generated recommendations with several existing endorsement mechanisms of the repository to explore possible relations among them. Finally, the recommendations generated by the different algorithms were compared in order to evaluate whether or not they were overlapping. The results found here can be used as a starting point for future studies that account for the specific context of learning object repositories and the different aspects of preference in learning resource selection.     

Inquiry-Based Learning for Older People at a University in Spain

With the increasing number of older people in the world and their interest in education, universities play an important role in providing effective learning methodologies. This paper presents a new instructional methodology implementing inquiry-based learning (IBL) in two courses focused on alternative energies in the Program for Older People at the University of Lleida (UdL) in Spain. The instructional methodology is evaluated and results are discussed after two years of studies. The instructional methodology presented in this paper helped students to build and reinforce scientific skills and knowledge construction. This work may have potential relevance to other instructors involved in adult education.     

Lexical and grammatical abilities in deaf Italian preschoolers: the role of duration of formal language experience

We evaluated language development in deaf Italian preschoolers with hearing parents, taking into account the duration of formal language experience (i.e., the time elapsed since wearing a hearing aid and beginning language education) and different methods of language education. Twenty deaf children were matched with 20 hearing children for age and with another 20 hearing children for duration of experience. Deaf children showed a significant delay in both vocabulary and grammar when compared to same-age hearing children yet a similar development compared to hearing children matched for duration of formal language experience. The delay in linguistic development could be attributable to shorter formal language experience and not to deafness itself. Deaf children exposed to spoken language accompanied by signs tended to understand and produce more words than children exposed only to spoken language. We suggest that deaf children be evaluated based on their linguistic experience and cognitive and communicative potential.     

Document–document similarity approaches and science mapping: Experimental comparison of five approaches

This paper treats document–document similarity approaches in the context of science mapping. Five approaches, involving nine methods, are compared experimentally. We compare text-based approaches, the citation-based bibliographic coupling approach, and approaches that combine text-based approaches and bibliographic coupling. Forty-three articles, published in the journal Information Retrieval, are used as test documents. We investigate how well the approaches agree with a ground truth subject classification of the test documents, when the complete linkage method is used, and under two types of similarities, first-order and second-order. The results show that it is possible to achieve a very good approximation of the classification by means of automatic grouping of articles. One text-only method and one combination method, under second-order similarities in both cases, give rise to cluster solutions that to a large extent agree with the classification.     

Waves: a fast multi-tier top-<Emphasis Type="Italic">k</Emphasis> query processing algorithm

In this paper, we present Waves, a novel document-at-a-time algorithm for fast computing of top-k query results in search systems. The Waves algorithm uses multi-tier indexes for processing queries. It performs successive tentative evaluations of results which we call waves. Each wave traverses the index, starting from a specific tier level i. Each wave i may insert only those documents that occur in that tier level into the answer. After processing a wave, the algorithm checks whether the answer achieved might be changed by successive waves or not. A new wave is started only if it has a chance of changing the top-k scores. We show through experiments that such lazy query processing strategy results in smaller query processing times when compared to previous approaches proposed in the literature. We present experiments to compare Waves’ performance to the state-of-the-art document-at-a-time query processing methods that preserve top-k results and show scenarios where the method can be a good alternative algorithm for computing top-k results.     

Re-bordering comparative education in Latin America: Between global limits and local characteristics

Conceived for presentation at the XIV WCCES conference in Istanbul in 2010, the topic of which was “Bordering Comparative Education”, this paper, within that framework, aims to present the current state of the discipline in Latin America in relation to a quick overview of its present-day situation at a global level. After providing an overview of the current debates on comparative education, with special emphasis on what the authors refer to as motor nuclei (a series of milestones or episodes which have become transdiscursive as the discipline has evolved), as well as pinpointing current challenges in the field, this paper looks into the development of the discipline in Latin America and how it has contributed to the understanding of the region’s educational systems. The paper also examines the unique relationship between comparative studies and the field of educational planning in Latin America. The authors then go on to provide a thematic analysis, categorising the papers presented at three conferences held by the Sociedad Argentina de Estudios Comparados en Educación (SAECE, the Argentine Society for Comparative Education Studies) in 2005, 2007 and 2009. The paper closes with several conclusions regarding the current debate on the discipline in the region and its possibilities for the future.     

Handgrip strength and health outcomes: Umbrella review of systematic reviews with meta-analyses of observational studies

PurposeThe aim of the present study was to assess both the credibility and strength of evidence arising from systematic reviews with meta-analyses of observational studies on handgrip strength and health outcomes.MethodsAn umbrella review of systematic reviews with meta-analyses of observational studies was conducted. We assessed meta-analyses of observational studies based on random-effect summary effect sizes and their p values, 95% prediction intervals, heterogeneity, small-study effects, and excess significance. We graded the evidence from convincing (Class I) to weak (Class IV).ResultsFrom 504 articles returned in a search of the literature, 8 systematic reviews were included in our review, with a total of 11 outcomes. Overall, nine of the 11 of the outcomes reported nominally significant summary results (p < 0.05), with 4 associations surviving the application of the more stringent p value (p < 10⁻⁶). No outcome presented convincing evidence. Three associations showed Class II evidence (i.e., highly suggestive): (1) higher handgrip values at baseline were associated with a minor reduction in mortality risk in the general population (n = 34 studies; sample size = 1,855,817; relative risk = 0.72, 95% confidence interval (95%CI): 0.67–0.78), (2) cardiovascular death risk in mixed populations (n = 15 studies; relative risk = 0.84, 95%CI: 0.78–0.91), and (3) incidence of disability (n = 7 studies; relative risk = 0.76, 95%CI: 0.66–0.87).ConclusionThe present results show that handgrip strength is a useful indicator for general health status and specifically for early all-cause and cardiovascular mortality, as well as disability. To further inform intervention strategies, future research is now required to fully understand mechanisms linking handgrip strength scores to these health outcomes.