Metacognitive development and moving away

It is now largely accepted that social and cultural factors have a significant impact on cognitive development in children. Piaget acknowledged the impact of social factors and peer interaction on cognitive development. However, there has been relatively little work on the impact of social and cultural factors on the development of metacognition in first‐year university students. Using the Learning and study strategies inventory (LASSI) as a measure of metacognition, this study samples first‐year undergraduates in Hong Kong (N = 1815) and identifies significant differences in metacognitive abilities between students living in their home environment and those who have moved away from their family and, in some cases, culture, to pursue undergraduate education.     

Visualizing the learning patterns of topic-based social interaction in online discussion forums: an exploratory study

Educational technology research and development - Online discussion forums are common features of learning management systems; they allow teachers to engage students in topical discussions in...     

A retrospective study of a hybrid document-context based retrieval model

This paper describes our novel retrieval model that is based on contexts of query terms in documents (i.e., document contexts). Our model is novel because it explicitly takes into account of the document contexts instead of implicitly using the document contexts to find query expansion terms. Our model is based on simulating a user making relevance decisions, and it is a hybrid of various existing effective models and techniques. It estimates the relevance decision preference of a document context as the log-odds and uses smoothing techniques as found in language models to solve the problem of zero probabilities. It combines these estimated preferences of document contexts using different types of aggregation operators that comply with different relevance decision principles (e.g., aggregate relevance principle). Our model is evaluated using retrospective experiments (i.e., with full relevance information), because such experiments can (a) reveal the potential of our model, (b) isolate the problems of the model from those of the parameter estimation, (c) provide information about the major factors affecting the retrieval effectiveness of the model, and (d) show that whether the model obeys the probability ranking principle. Our model is promising as its mean average precision is 60–80% in our experiments using different TREC ad hoc English collections and the NTCIR-5 ad hoc Chinese collection. Our experiments showed that (a) the operators that are consistent with aggregate relevance principle were effective in combining the estimated preferences, and (b) that estimating probabilities using the contexts in the relevant documents can produce better retrieval effectiveness than using the entire relevant documents.     

Automatic indexing using term discrimination and term precision measurements

A variety of abstract automatic indexing models have been developed in recent times in an effort to produce indexing methods that are both effective and usable in practice. Among these are the term discrimination model and the term precision system. These two indexing systems are briefly described and experimental evidence is cited showing that a combination of both theories produces better retrieval performance than either one alone. Appropriate conclusions are reached concerning viable automatic indexing procedures usable in practice.     

College Admissions,International Competition,and the Cold War in Asia: The Case of Overseas Chinese Students in Taiwan in the 1950s

Focusing only on education exchanges between the United States and other countries, existing scholarship fails to illuminate how American‐sponsored student migrations between other countries helped expand U.S. hegemony. This article attempts to rectify this limitation by looking at Taiwan's policies on overseas Chinese students (qiaosheng) in the 1950s. After the debacle of the Chinese Civil War and its retreat to Taiwan, the Kuomintang (KMT) sought to solicit overseas Chinese support and to counter Communist China's drive for “returning students.” The KMT‐developed qiaosheng program faced difficulties until 1954, when the United States, seeing that Taiwan's project could serve its anti‐Communist plan, started bankrolling the qiaosheng program, thereby enabling the KMT to lure more students away from Communist China. These findings suggest that overlooking U.S.‐sponsored student migrations between nations outside the United States renders our analysis of international education exchanges and American imperialism incomplete.     

Content not form predicts oral language comprehension: the influence of the medium on preschoolers’ story understanding

The purpose of this study was to investigate the influence of digital and non-digital storybooks on low-income preschoolers’ oral language comprehension. Employing a within-subject design on 38 four-year-olds from a Head Start program, we compared the effect of medium on preschoolers’ target words and comprehension of stories. Four digital storybooks were adapted and printed for read-alouds. Children were randomly read two stories on the digital platform, and two by the assessors. Following the story, children completed vocabulary and comprehension tasks, and a brief motivation checklist. We found no significant differences across medium; children comprehended equally well regardless of whether the story was read digitally or in person. However, using repeated ANOVA measures, we found a significant main effect of the story read. This research indicates that the content of the book rather than its form predicts story comprehension. Implications for using digital media in the preschool years are discussed.     

Entry and competitive dynamics in the mobile telecommunications market

We propose an extension of the Gans-Stern [Gans, J.S., Stern, S., 2003. The product market and the market for “ideas”: commercialization strategies for technology entrepreneurs. Research Policy 32 (2), 333-350] framework that includes entry by existing firms. An incumbent firm possessing complementary assets and strong appropriability is in a formidable position [Teece, D.J., 1986. Profiting from technological innovation: implications for integration, collaboration, licensing, and public policy. Research Policy 15 (6), 285-305]. However, a de alio entrant can leverage complementary assets to enter along a new technological trajectory, and then develop appropriability. We illustrate how several mobile telecommunications firms (Ericsson, Nokia and Samsung) pursued this strategy to catch up with the market leader (Motorola). We also identify several shortcomings in Motorola's approach: it was too inward-looking in developing technologies, but ironically not inward-looking enough in exploiting its most valuable patents.     

Implementing Performance Indicators of early learning and teaching: A Chinese study

This study investigated how a set of newly developed indicators of early learning and teaching by the government, which was based on western ideology of child learning, was implemented in a Chinese context like Hong Kong. Twelve early childhood settings of 5747 children and 284 staff volunteered to implement the indicators within two years and the processes were observed and analysed. A multi‐method, multi‐source data collection strategy was used to document the self‐evaluation and improvement process. All the participating settings went through the five stages of the evaluation cycle: understanding the Performance Indicators, assessing learning and teaching, formulating an action plan for improvement, implementing the action plan, and reflection. The results indicated that: (1) implementing a quality assurance cycle took time, resources and commitment; (2) the implementation helped to enhance practitioners’ professionalism; and (3) teacher professionalism was the key to the success of this quality assurance mechanism. The socio‐contextual factors and the educational implications of these findings are discussed.     

Parameters selection in gene selection using Gaussian kernel support vector machines by genetic algorithm

INTRODUCTION Recent techniques based on oligonucleotide or cDNA microarrays allow the expression level of thousands of genes to be monitored in parallel (Golub et al., 1999). A critically important factor for cancer diagnosis and treatment is the reliable prediction of tumor progression. A remarkable advance for mo- lecular biology and for cancer research is cDNA mi- croarray technology. cDNA microarray datasets havea high dimensionality corresponding to the large number of genes monit…