The social practice of learning: a craft for the 21st century

David Hung 서울대학교 교육연구소 2009 Asia Pacific Education Review Vol.10 No.2

This article argues that the social practice of learning (SPL), involving life-long learning, meta-learning, deep reflection, and dialogue in a community, should be the distinguishing knowledge base of schools in the twenty-first century. This article also analyses the strategies and challenges of the recent education reforms in Singapore through the lens of an SPL education paradigm. Although the Singapore government has done much to train teachers, trim syllabi and introduce new ways of teaching and learning, such as project work, the real challenge is to go beyond the provision of structural changes to the substance of the epistemological reform.

Teachers as brokers: Bridging formal and informal learning in the 21st century

David Hung,Shu-Shing Lee,Kenneth Y.T. Lim 한국교육개발원 2012 KEDI Journal of Educational Policy Vol.9 No.1

A review of schooling practices from learners’ and teachers’ perspectives relative to 21st century goals is conducted. Although schools try to embed 21st century literacies into the curriculum, there is an overemphasis on content knowledge. The instructional orientation used in schools is inconsistent with the softer skills of 21st century literacies. Instead of embedding 21st century literacies in the already packed curricula, a proposition is made for teachers to become brokers who bridge students’ learning in classroom and informal contexts such as sports activities and social media environments. Using a case study, we posit that metacognitive brokering with learners plays a critical function in bridging formal and informal learning. To encourage learners to tinker, teachers’ roles in classrooms can be transformed from one of content sages to brokers who help learners see similarities and recontextualize learning across contexts. The brokering process bridges learning across disciplines and contexts to gradually restructure schools as interdisciplinary avenues of learning. We recognize that teachers have workload and time constraints. Thus, technologies can be a mediatory tool to help teachers engage in the brokering process.

Social constructivism, projective identity, and learning: case study of nathan

David Hung,Seo Hong Lim,Azilawati Bte Jamaludin 서울대학교 교육연구소 2011 Asia Pacific Education Review Vol.12 No.2

In this paper we consider the significant issue of identity and how it relates to learning. Importantly, we narrow down the study in terms of how projective identity interplays with learning from the point of view of the learner and his/her social community. Self and community cannot be divorced. In order to illustrate this concept, we describe a case study involving an 11 years old boy in a learning context commonly referred to as an informal learning environment. This environment would include the community in which projective identity evolves. The trajectory of identity projection can be conceived in Ricoeurian terms of a plot where actors perform actions in role playing situations. This plot metaphor is consistent to the many interactions within MMPOGs and fictional worlds currently in existence. We conceive of an identity projection framework as our contributions to knowledge.

Theory and Design of Near-Optimal MIMO OFDM Transmission System for Correlated Multipath Rayleigh Fading Channels

Hung, Kun-Chien,Lin, David W. The Korea Institute of Information and Commucation 2007 Journal of communications and networks Vol.9 No.2

We consider channel-coded multi-input multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) transmission and obtain a condition on its signal for it to attain the maximum diversity and coding gain. As this condition may not be realizable, we propose a suboptimal design that employs an orthogonal transform and a space-frequency interleaver between the channel coder and the multi-antenna OFDM transmitter. We propose a corresponding receiving method based on block turbo equalization. Attention is paid to some detailed design of the transmitter and the receiver to curtail the computational complexity and yet deliver good performance. Simulation results demonstrate that the proposed transmission technique can outperform the conventional coded MIMO OFDM and the MIMO block single-carrier transmission with cyclic prefixing.

Contrasting clinical characteristics and treatment patterns in women with newly diagnosed advanced-stage epithelial ovarian cancer in Australia, South Korea and Taiwan

Hung-Hsueh Chou,Sian Fereday,Anna DeFazio,Chih-Long Chang,David Bowtell,Heng-Cheng Hsu,Nadia Traficante,Soo Young Jeong,Wen-Fang Cheng,Dinuka Ariyarantne,Australian Ovarian Cancer Study Group,Teresa T 대한부인종양학회 2023 Journal of Gynecologic Oncology Vol.34 No.1

Objective: The real-world INFORM study analyzed sociodemographics, treatment patterns and clinical outcomes for patients with newly diagnosed advanced epithelial ovarian cancer (EOC) in Australia, South Korea (S.Korea) and Taiwan preceding incorporation of poly(ADP-ribose) polymerase inhibitors into clinical practice. Methods: Retrospective data from patients diagnosed with EOC (high-grade serous EOC for Taiwan) between January 2014 and December 2018 with ≥12 months follow-up from diagnosis were analyzed descriptively. Survival was evaluated by Kaplan-Meier with two-sided 95% confidence interval (CI). Results: Of the 987 patients (Australia, 223; S.Korea, 513; Taiwan, 251), 98% received platinum-based chemotherapy (CT). In S.Korea and Taiwan 76.0% and 78.9% respectively underwent primary cytoreductive surgery; in Australia, 56.5% had interval debulking surgery. Bevacizumab was included in primary/maintenance therapy for 22.4%, 14.6% and 6.8% of patients in Australia, S.Korea and Taiwan, respectively. Patients receiving bevacizumab were high-risk (reimbursement policy) and achieved similar real-world progression-free survival (PFS) compared with CT only. Overall, the median real-world PFS (months; 95% CI) was similar across Australia (16.0 [14.63–18.08]), S.Korea (17.7 [16.18–19.27]) and Taiwan (19.1 [17.56–22.29]). Conclusion: This study reveals poor prognosis despite differences in demographics and treatment patterns for patients with EOC across Asia-Pacific suggesting the need for biomarker-driven novel therapies to improve outcomes.

Integration of Adults with Mental Handicaps into the Community of Hong Kong

David Ping-Pui,Tak-wah yeung,Man-hung Ngan,Chau-Kiu Cheung,Kin-yin Li BK21 Project Force of Special Education Deagu Univ 2001 Journal of Asia-Pacific Special Education Vol.1 No.3

The exten and factors of the integration of adults with mental handicaps into the community of Hong Kong is an uncharted area for rigorous investigation. To conduct the investigation, this study surveyed a representative sample of 692 adults, aged 15 or above, from the end of 1998 through early 1999. The survey sapmle sufficient numbers of adults of the three levels of handicaps, mild(n=234), moderate(n=337), and severe grades(n=121). To measure community intergration, the study employed a comprehensive set of scales, which demonstrated satisfactory reliability. With data weighted to best represent the population adults with mental handicaps in Hong Kong, the study found that being accepred was the highest.

Factors Affecting Efficiency of Electronic Customs and Firm Performance in Vietnam

NGUYEN, Hang Thanh,GRANT, David Bruce,BOVIS, Christopher,NGUYEN, Thuy Thi Le,MAC, Yen Thi Hai Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.2

The paper identifies the enablers (drivers) and inhibitors (barriers) influencing e-customs implementation in Vietnam (known as a developing country with a lower technological environment) along with determining the impact of e-customs on firm performance. The survey was conducted with the representatives (managers) of firms in five cities and provinces dominating Vietnam's international trade. The data was analyzed using structural equation modeling (SEM). The findings show two significant drivers (enablers) - relative advantages and national culture, while compatibility and ease of use are the barriers. Previous studies showed that cultural dimensions related to 'uncertainty acceptance' and 'individualism' encourage innovation; however, this paper demonstrates that 'uncertainty avoidance' and 'collectivism' promote e-customs deployment in Vietnam. Previously, Vietnamese culture was known for scoring high on cultural dimensions related to 'power distance' and 'short-term orientation'. However, today, as an emerging country, Vietnamese has switched to 'low distance' and 'long-term orientation', especially in terms of e-customs innovation. Additionally, the paper also emphasized that e-customs implementation had a positive influence on firm performance in Vietnam. Based on the results of the paper, policy-makers can devise essential solutions to enhance e-customs implementation as well as managers of firms can set-up strategies to adapt to the modernized environment.

Automated Grasp Planning for Sheet Metal Bending

Kyoung Hung Kim,David Alan Bourne 대한기계학회 1996 대한기계학회 기타 간행물 Vol.1996 No.11

Building relationships between schools and community agencies to meet 21st century learning demands: Critical factors

Imran Shaari,David Hung 한국교육개발원 2013 KEDI Journal of Educational Policy Vol.10 No.1

This study explores critical factors in relationships between schools and community agencies. These relationships are increasingly important because schools cannot act alone in the 21st century. A case study approach was used in this exploratory study. Data was collected from multiple sources and the analysis was iterative, involving multiple rounds of coding as themes emerged. The four themes include: (1) Policy Limits Recognition, (2) the Integrated Time-table System, (3) Academy Formation, and (4) the Counselor System. Our understanding of the themes was informed by contextual information about the case and literature. Building from these themes, three design principles were derived for establishing relationships beyond school boundaries. We recognize that there are possible barriers to the practical implementation of these principles, but they provide a guiding ideal and goal. This study illuminates the need to reassess current relationships between schools and communities to increase student outcomes.

Automated Grasp Planning for Sheet Metal Bending

Kim, Kyoung Hung,Bourne, David Alan 대한기계학회 1996 International Sessions in Celebration of the 50th Vol.1 No.1

This paper describes a generative grasp planner developed for a robot-attended sheet metal bending machine. In order to reduce the design to production time and improve the accuracy of the finished part, the grasp planner selects an optimal gripper that requires the minimum number of regrasps to produce the part. The number of grasp positions is estimated by the number of $quot;bend sets$quot; needed to account for all of the bends, where each $quot;bend set$quot; is a collection of bends that can be done from one grasp position. The grasp planner is designed to work with a bend sequence planner based on an A* search algorithm. When the bend sequence planner queries with a partial bend sequence, the grasp planner responds with grasp area and an estimate of grasping's cost to the goal. Although the size of the search space exponentially grows with the number of bends, the grasp planner's accurate cost estimation helps the bend sequence planner quickly direct the search for the best bend sequence. In many cases, the grasp planner outperforms human experts in selecting an optimal gripper and is able to generate grasp plans with a minimum number of regrasps.