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Siew Fan Wong,Seoyoun Lee,Younghoon Chang 한국경영정보학회 2021 한국경영정보학회 학술대회논문집 Vol.2021 No.11
Safety issue is the decisive key to service commercialization for autonomous vehicles. This study examines the relationship between perceived safety and the quality of the journey in AI-based self-driving taxi services. The results will provide scholarly and practical implications to enhance AI-based self-driving taxi services.
차량 공유 서비스 사용 소비자들의 위험 회피 행동에 대한 이해 : 위치정보공유앱 사용 시의 사용 맥락의 조절효과를 중점으로
장영훈,이환수,Siew Fan Wong 한국경영정보학회 2018 한국경영정보학회 학술대회논문집 Vol.2018 No.11
본 연구는 최근 급속도로 퍼져나가고 있는 차량공유서비스 이면에 존재하는 범죄 위험에 대처하기 위해 개발된 위치공유서비스와 안전관련 기능에 대한 사용자들의 위험대처행동을 논의한다. 이를 위해 기존 코핑이론과 기술위험회피이론를 기반으로 사용 맥락 개념을 도입, 적용하여 실증적 연구를 수행하였다. 설문은 중국광동성에 거주하는 차량공유서비스 사용자들과 위치공유서비스 사용자들을 대상으로 진행하였고, 연구결과를 통해 이론적, 실무적 시사점을 제공하고 있다.
Younghoon Chang,Siew Fan Wong,Priscilla a/p Sugumar,Muthukumaran Maruthappa 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.8
As restaurant businesses adopt new table-top ordering system (TTOS), the management would want to measure the success of their technology investment. One good indicator is whether returning customers will choose to continue using TTOS after their initial experience. Founded on the Expectation-Confirmation Model (ECM), this study answers the question by investigating customers’ continuance intention to use TTOS. Survey data from 140 regular restaurant customers who have prior experience with TTOS shows that satisfaction and perceived usefulness significantly affect continuance intention to use. Perceived usefulness, perceived enjoyment, and user interface significantly influence satisfaction while confirmation significantly affects perceived usefulness, perceived enjoyment, and user interface. Self-efficacy has significant impact on user interface; confirmation does not have significant impact on satisfaction. The findings have valuable implications for restaurant businesses and IT companies on how they should design or update their TTOS in the future.
The role of privacy policy on consumers’ perceived privacy
Chang, Younghoon,Wong, Siew Fan,Libaque-Saenz, Christian Fernando,Lee, Hwansoo JAI Press 2018 Government information quarterly Vol.35 No.3
<P><B>Abstract</B></P> <P>With today's big data and analytics capability, access to consumer data provides competitive advantage. Analysis of consumers' transactional data helps organizations to understand customer behaviors and preferences. However, prior to capitalizing on the data, organizations ought to have effective plans for addressing consumers' privacy concerns because violation of consumer privacy brings long-term reputational damage. This paper proposes and tests a Privacy Boundary Management Model, explaining how consumers formulate and manage their privacy boundary. It also analyzes the effect of the five dimensions of privacy policy (Fair Information Practices) on privacy boundary formation to assess how customers link these dimensions to the effectiveness of privacy policy. Survey data was collected from 363 customers who have used online banking websites for a minimum of six months. Partial Least Square results showed that the validated research model accounts for high variance in perceived privacy. Four elements of the Fair Information Practice Principles (access, notice, security, and enforcement) have significant impact on perceived effectiveness of privacy policy. Perceived effectiveness in turn significantly influences perceived privacy control and perceived privacy risk. Perceived privacy control significantly influences trust and perceived privacy. Perceived privacy concern and trust also significantly influence perceived privacy.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We test a Privacy Boundary Management Model and perceived effectiveness of FIPPs. </LI> <LI> Access, notice, security, and enforcement affect the effectiveness of privacy policy. </LI> <LI> Perceived effectiveness significantly influences privacy control and privacy risk. </LI> <LI> Privacy control, privacy concern, and trust significantly influence perceived privacy. </LI> <LI> The results have important implications for policy makers and financial institutes. </LI> </UL> </P>
Chang, Younghoon,Wong, Siew Fan,Park, Myeong-Cheol SAGE Publications 2016 INFORMATION DEVELOPMENT Vol.32 No.3
<P>The digital divide between countries is a critical phenomenon separating the countries that ‘have’ (mostly developed countries) from the countries that ‘have not’ (mostly developing countries). It places developing countries in a disadvantaged position economically, politically, and socially that in turns affects the life and social well-being of the citizens. Current understanding of the digital divide is limited by usage of secondary data, which prompts scholars to call for more theoretically-based empirical research. Since the key to reducing the digital divide is to increase people’s access to ICT, this study developed and empirically tested a 3-tier ICT access model to determine the effect on ICT development of intention to participate in online activities among citizens in developed and developing countries. The model was founded on three existing research frameworks. In addition, this study theoretically clarified the relationship between four types of ICT access and how they contribute to intention to participate online. Survey data of university students from Korea and Cambodia was collected. The results confirm the effect of ICT development on citizens’ intention and isolate key factors that impact the two countries differently. Technological access was found to impact extrinsic motivational access and skills access. Social access influenced extrinsic and intrinsic motivational access and skills access. Implications for research and practice are discussed.</P>
Sports Injuries among High School Athletes in 15 West Central Florida Schools
Karen Liller,장시원,Siew Wong,Barbara Morris,이수연 한국체육학회 2015 International journal of human movement science Vol.9 No.2
Injury surveillance needs to be conducted so that tailored interventions for high school athletes may be implemented. The purposes of this study are to report the 2013-2014 injuries of high school athletes in 15 West Central Florida schools utilizing the Reporting Information Online (RIO) data system and to garnish support for the role of surveillance in planning injury prevention programs for athletes. Certified athletic trainers (ATCs) were hired and trained by researchers from the University of South Florida Sports Medicine and Athletic-Related Trauma Institute (SMART) to collect and report injury findings from the high school athletes. Descriptive statistics, injury rates, and risk ratios were calculated utilizing SAS (Version 9.3). Overall, 574 injuries were reported by the ATCs. The majority of athletes injured were male (68.4%). Football was the leading sport (270, 47.0%) for number of injuries. The leading rate of injury per 1000 athlete-exposures for practices was for women’s lacrosse at 3.36 and for competition, football at 14.4. Boys had significantly greater injury rates compared to girls overall. The results of this study point to the need for collecting high school athletes’ sports injury data and using the findings for the implementation and management of tailored injury prevention programs.
A Pilot Study on TeleBot, a Internet-based Teleoperated Robot
Dilip Kumar Limbu,Wong Hong Yee Alvin,Chua Yuanwei,Albertus Hendrawan Adiwahono,Tran Anh Dung,Han Boon Siew 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
This paper presents a user study on an implemented Internet-based teleoperation robot named TeleBot. The objectives of the study were to: a) test the usability of TeleBot, b) compare two commonly used devices to control TeleBot, and c) understand further development and requirement of TeleBot by examining how operators use TeleBot to complete a specific task. A task-oriented user study that included navigating TeleBot to a specific location and use TeleBot’s arm to touch a “X” marking placed on the door, was designed. Eight participants performed the same task using two different types of device. Both objective and subjective data were collected during the study. The results indicated that a) TeleBot demonstrated a certain level of usability; b) showed that the gamepad was slightly easier to use for teleoperation and finally c) deduced further developmental area for TeleBot.
Li Shean Toh,Pauline Siew Mei Lai,David Bin-Chia Wu,Brian G. Bell,Cuu Phuong Linh Dang,Bee Yean Low,Kok Thong Wong,Giuseppe Guglielmi,Claire Anderson 대한골다공증학회 2019 Osteoporosis and Sarcopenia Vol.5 No.3
Objectives: To compare and assess the performance of 6 osteoporosis risk assessment tools for screening osteoporosis in Malaysian postmenopausal women. Methods: Six osteoporosis risk assessments tools (the Simple Calculated Osteoporosis Risk Estimation [SCORE], the Osteoporosis Risk Assessment Instrument, the Age Bulk One or Never Estrogen, the body weight, the Malaysian Osteoporosis Screening Tool, and the Osteoporosis Self-Assessment Tool for Asians) were used to screen postmenopausal women who had not been previously diagnosed with osteoporosis/osteopenia. These women also underwent a dual-energy X-ray absorptiometry (DXA) scan to confirm the absence or presence of osteoporosis. Results: A total of 164/224 participants were recruited (response rate, 73.2%), of which only 150/164 (91.5%) completed their DXA scan. Sixteen participants (10.7%) were found to have osteoporosis, whilst 65/150 (43.3%) were found to have osteopenia. Using precision-recall curves, the recall of the tools ranged from 0.50 to 1.00, whilst precision ranged from 0.04 to 0.14. The area under the curve (AUC) ranged from 0.027 to 0.161. The SCORE had the best balance between recall (1.00), precision (0.04e0.12), and AUC (0.072e0.161). Conclusions: We found that the SCORE had the best balance between recall, precision, and AUC among the 6 screening tools that were compared among Malaysian postmenopausal women.