Web document summarization by exploiting social context with matrix co-factorization     

Minh-Tien Nguyen  Viet Cuong Tran  Xuan Hoai Nguyen  Le-Minh Nguyen 《Information processing & management》2019,56(3):495-515

In the context of social media, users usually post relevant information corresponding to the contents of events mentioned in a Web document. This information posses two important values in that (i) it reflects the content of an event and (ii) it shares hidden topics with sentences in the main document. In this paper, we present a novel model to capture the nature of relationships between document sentences and post information (comments or tweets) in sharing hidden topics for summarization of Web documents by utilizing relevant post information. Unlike previous methods which are usually based on hand-crafted features, our approach ranks document sentences and user posts based on their importance to the topics. The sentence-user-post relation is formulated in a share topic matrix, which presents their mutual reinforcement support. Our proposed matrix co-factorization algorithm computes the score of each document sentence and user post and extracts the top ranked document sentences and comments (or tweets) as a summary. We apply the model to the task of summarization on three datasets in two languages, English and Vietnamese, of social context summarization and also on DUC 2004 (a standard corpus of the traditional summarization task). According to the experimental results, our model significantly outperforms the basic matrix factorization and achieves competitive ROUGE-scores with state-of-the-art methods.  相似文献   

Bidirectional longitudinal relationship between Chinese children's compounding awareness and vocabulary knowledge from Grades 3 to 6     

Ruibo Xie  Xinchun Wu  Thi Phuong Nguyen  Ying Zhao  Jie Feng 《Journal of Research in Reading》2020,43(4):482-495

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Label-free microfluidic characterization of temperature-dependent biomolecular interactions     

Nguyen T  Pei R  Landry DW  Stojanovic MN  Lin Q 《Biomicrofluidics》2011,5(3):34118-341187

We present a microfluidic approach to characterizing temperature-dependent biomolecular interactions. Solvated L-arginine vasopressin (AVP) and its immobilized RNA aptamer (spiegelmer) were allowed to achieve equilibrium binding in a microchip at a series of selected temperatures. Unbound AVP were collected and analyzed with matrix-assisted laser desorption∕ionization mass spectrometry (MALDI-MS), yielding melting curves that reveal highly temperature-dependent zones in which affinity binding (36–45 °C) or dissociation (25–33 °C and 50–65 °C) occurs. Additionally, temperature-dependent binding isotherms were constructed; from these, thermodynamic quantities involved in binding were extracted. The results illustrated a strong change in heat capacity of interaction for this system, suggesting a considerable thermodynamic influence controlling vasopressin-spiegelmer interaction.  相似文献   

Negotiating contradictions in developing teacher identity during the EAL practicum in Australia     

Minh Hue Nguyen 《Asia-Pacific Journal of Teacher Education》2017,45(4):399-415

This paper reports on how Maria (pseudonym), a non-native English speaker (NNES) and preservice teacher (PST) of English as an additional language (EAL), developed her professional identity during the practicum in an Australian secondary school. Drawing on activity theory, the study identified contradictions in Maria’s practicum activity and examined how Maria’s professional identity developed through her negotiation of the contradictions. Data included interviews with Maria before, during and after the practicum, her reflections, an interview with her school mentor (Ms Davies, pseudonym), and relevant documents. The findings reveal that Maria experienced contradictions between her multiple identities of NNES, student, becoming teacher, and classroom teacher, between her mentor’s teaching approach and that of her own, and between her practice and rules. The findings provide implications for researching teacher identity and supporting preservice EAL teachers in developing productive teacher identities during the practicum.  相似文献   

‘Everyone thinks that I just need to know a few words and sing some songs to teach English to the kids’: primary school English language teachers struggled for their professional legitimacy     

Chinh Duc Nguyen 《Teacher Development》2019,23(2):174-191

Language teachers’ struggles for professional legitimacy have emerged as an area of interest in the field of language teaching research. Grounded in Wenger’s concept of ‘trajectories of learning’, the current study explored the fight for legitimate status of two primary school English language teachers in Vietnam. Data for this article were collected through life-history interviews in which the two participating teachers were encouraged to tell stories about the early days of their teaching careers. The findings of the study reveal that the participants struggled for professional legitimacy during the early stage of their teaching careers. Beyond the school setting, the two teachers encountered negative attitudes towards their teaching profession as teaching languages to young learners was not highly valued in society. Based on the findings, the study pointed to the issue of power relations which, although regarded as a barrier to teachers’ professional legitimacy, is not adequately addressed in the concept of ‘trajectories of learning’. The study also revealed some implications for legitimising language teachers’ professional status.  相似文献   

Sustainable assessment for lifelong learning     

Tham T.H. Nguyen  Melanie Walker 《Assessment & Evaluation in Higher Education》2016,41(1):97-111

This paper explores the alignment of assessment practices in universities and lifelong learning as a key process and outcome for expansive student development. It outlines Boud’s approach to assessment, operationalises this to analyse practices in two contrasting national contexts: the sociology departments of the Midlands University in the UK and Nam Du University in Vietnam, and reframes this framework as a guide to improving practices and better-supporting lifelong learning. The paper thus contributes to recent debates about sustainable assessment and how to change assessment to better support students for lifelong learning in different countries. The findings suggest that although more elements were found at Midlands University than Nam Du University, assessment in both cases was an imperfect realisation of this framework. Nonetheless, the paper argues that the framework can offer guidance for changes to align assessment practices with lifelong learning, but to do this it should be adapted to the education context and also expanded to include explicit social commitments to others for expansive lifelong learning.  相似文献   

A Comparison of the Effects of Two Different Online Homework Systems on Levels of Knowledge Retention in General Chemistry Students     

Nabulsi  Leena  Nguyen  Amy  Odeleye  Oluwatobi 《Journal of Science Education and Technology》2021,30(1):31-39

Journal of Science Education and Technology - Online homework systems have been shown to help student achievement in chemistry courses. This study sought to compare the levels of knowledge...  相似文献   

Science Career-Related Possible Selves of Adolescent Girls: A Longitudinal Study     

Becky Wai-Ling Packard  Dam Nguyen 《Journal of Career Development》2003,29(4):251-263

This paper uses a possible selves theoretical framework to examine whether and how adolescent girls' images of themselves as future scientists change during their transition from high school to college. Forty-one female high school graduates from diverse ethnic and socioeconomic backgrounds, who had enrolled in an intensive math and science program while in high school, participated in interviews focused on their perceptions of factors that influenced their career plans over time. Participants suggested that career-related internships and intensive academic programs, especially those that yielded important mentoring relationships, were contexts in which they negotiated career-related possible selves and subsequent career plans.  相似文献   

Socio-scientific reasoning and environmental literacy in a field-based ecology class     

Andrew T. Kinslow  Troy D. Sadler  Hai T. Nguyen 《Environmental Education Research》2019,25(3):388-410

The complex environmental challenges humanity faces require citizens who are scientifically and environmentally literate. Many environmental education programs are situated in the field where students are immersed in their learning. These field-based activities are engaging but may lack opportunities for students to develop critical thinking and reasoning skills necessary to be environmentally literate. We suggest a socio-scientific issue (SSI) based teaching approach can increase epistemic engagement and lead to student gains in scientific and environmental literacy. This study describes how we modified an existing field-based ecology course, framing the learning around a local environmental socio-scientific issue. We used a convergent parallel mixed-methods approach to examine the changes in socio-scientific reasoning (SSR) over time for high school students in this course as a measure of scientific and environmental literacy. Results indicate that a focused SSI field-based environmental education curriculum can support development of socio-scientific reasoning and environmental literacy competencies among high school students.  相似文献   

Synergizing geriatric research and education in an allied health profession with an older adult community advisory board: development and process outcomes     

An Thi Nguyen  Sharon Burnside  Kristin Junge  Emily Kling Somerville  Marian Keglovits 《Educational gerontology》2020,46(8):486-496

ABSTRACT

Community advisory boards (CABs) have been used to improve research outcomes involving specific communities and populations, including older adults. There is potential to synergize the use of CABs to encompass both research activities and the education of healthcare professionals to help meet increasing demands for a geriatric healthcare workforce in aging populations worldwide. We describe the development and process outcomes of a CAB that synergizes geriatric research and education of students in an allied health profession (occupational therapy). Implementation costs from June 2017–June 2019 were recorded. In-depth interviews were conducted with CAB participants, who were community-dwelling older adults living in St. Louis, Missouri, United States. Interview data were analyzed using a constant comparison method based on a grounded theory approach. Themes were derived regarding barriers, facilitators, and benefits of CAB participation for older adults. Fourteen older adults (aged 65 and over) were initially recruited. The total direct cost of CAB implementation was 4050 United States Dollars over two years. Barriers to CAB participation for older adults included unexpected schedule conflicts due to illness and lack of understanding of the research process, while facilitators included accessible meeting spaces, staff support, flexible participation options, and financial support (e.g., transportation). Perceived benefits of CAB participation included gains in social capital, more positive views of research, and social connectedness. Key lessons learned are described and can be used to inform a novel approach to developing and implementing CABs to improve outcomes of geriatric research and education.  相似文献