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Wong C.-H.,Wawasan Open University | Tan G.W.-H.,University Tunku Abdul Rahman | Hew T.-S.,University of Malaya | Ooi K.-B.,UCSI University
Computers in Human Behavior | Year: 2016

The development within the mobile communications industry has provided a new mechanism for individuals to watch television programs via mobile device, known as mobile television (m-TV). Considering that m-TV is an emerging technology among traditional television services where critical success factors depend on user-centered, it is important to understand users' behavioral intention (BI). Unlike previous studies which have mainly focused on flow experience, perceived value, motivation and social cognitive theories, this study examines user-centered factors of technology readiness (TR) and technical support and training (TST). Therefore, 244 valid data were tested using partial least squares structural equation modeling (PLS-SEM) to measure both reflective and formative constructs based on the proposed framework. Findings reported that performance expectancy (PE), effort expectancy (EE) and TST have a positive and significant impact on BI. TR however has a negative relationship with BI. In addition, TR was also found to influence PE and EE. Similarly, TST has a direct effect factor on EE and EE was a significant determinant of PE. The findings of this study not only provide guidance for future researchers, but also valuable insights for designers, marketers and system providers of m-TV to tailor their services in the near future. © 2015 Elsevier Ltd.

Tan B.-K.,University of Oxford | Tan B.-K.,Wawasan Open University | Yassin G.,University of Oxford | Grimes P.,Harvard - Smithsonian Center for Astrophysics | And 2 more authors.
IEEE Transactions on Terahertz Science and Technology | Year: 2013

We present the design and preliminary experimental results of a broadband 650 GHz balanced SIS mixer utilizing two back-to-back unilateral finline tapers. The new design employs fully integrated circuit components onto a 15 μm silicon-on-insulator (SOI) substrate, hence greatly simplifying the balanced mixer block requirements. Independent testing of the on-chip RF quadrature hybrid and the DC/IF blocks showed performances consistence with the computational predictions. The fabricated mixer chip tests have also demonstrated successful operation in balanced mixing mode as the LO noise was separated from the IF output. Preliminary tests of the device's sensitivity gave a best double sideband (DSB) noise temperature of 714 K measured at 635 GHz, and remained at a similar level throughout the operating frequency band. The higher than expected noise temperature was mainly caused by a significant shift in the junction position during fabrication, in both the longitudinal and lateral directions, resulting in substantial shift in the tuning frequency and degradation in the coupling of power to the junction. © 2011-2012 IEEE.

Wong C.-H.,Wawasan Open University | Tan G.W.-H.,University Tunku Abdul Rahman | Loke S.-P.,University Technology of MARA | Ooi K.-B.,Linton University College
Industrial Management and Data Systems | Year: 2014

Purpose - While mobile TV (m-TV) is beneficial and is currently an emerging area within mobile commerce, the adoption rate is at the infancy stage. The purpose of this paper is therefore to adapt the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) model to explore on the factors in predicting users' behavioral intention (BI) of m-TV.Design/methodology/approach - Partial least square structural equation modeling approach was employed using 193 respondents to test the findings.Findings - The findings revealed that effort expectancy (EE), social influence (SI), facilitating conditions (FC), hedonic motivation (HM) and habit (HT) have significant effects on BI. In addition, gender was found to have moderating effect between FC and BI.Practical implications - Findings from this study provide valuable insights and contribute to the marketing strategy for mobile marketers, wireless communications vendors and application developers in the m-TV industry.Originality/value - Since the emergence of m-TV is regarded as a new concept, what factors that may motivate users to watch TV using m-devices remains unexplored and therefore is currently a neglected research area. This paper provides clues and valuable insights for mobile marketers, wireless communications vendors and application developers in the m-TV industry. © Emerald Group Publishing Limited.

Balakrishnan V.,University of Malaya | Liew T.K.,Wawasan Open University | Pourgholaminejad S.,University of Malaya
Computers and Education | Year: 2014

The current study investigated if university students are receptive in using social media enabled tools as part of their learning processes. The Social Media Acceptance Model focussing on six key constructs: Self, Performance, Social Influence, Facility, Effort and Functionality was used as a guide to build Edooware, an educational tool that supports myriad of social media functionalities. Both pre and post-evaluation questionnaires were used to gauge students' perceptions on their learning experiences. A sample of 68 students from two different courses evaluated Edooware. Analysis revealed significant improvements for Self, Social Influence and Functionality after using Edooware. It can be inferred that the students were particularly attracted to some of the features provided in Edooware that are not available in the current learning platform. Educational institutions should look into the possibility of incorporating social media enabled tools to improve students' learning experiences. © 2014 Elsevier Ltd. All rights reserved.

Tan B.-K.,University of Oxford | Tan B.-K.,Wawasan Open University | Yassin G.,University of Oxford | Grimes P.,Harvard - Smithsonian Center for Astrophysics
IEEE Transactions on Terahertz Science and Technology | Year: 2014

We present a simple method for widening the Intermediate frequency (IF) bandwidth of high frequency superconductor-insulator-superconductor (SIS) mixers. The method only requires a mixer with a single ~1 μ m2 tunnel junction and an IF transformer fabricated with standard printed circuit board technology, avoiding the complexity of requiring several very small tunnel junctions in series or the use of on-chip IF tuning circuits. The method is based on employing a multi-stage microstrip IF transformer to transform the dynamic impedance of the SIS mixer chip to 50 Ω output over a wide IF bandwidth. This method assumes moderately high capacitance junction (75 fF/μm2), and is particularly useful for high frequency SIS mixers. In this paper, we shall first describe the design methodology of the IF transformer using an existing 650 GHz SIS mixer chip design as an illustration and then present the measured IF performance of the mixer. © 2011-2012 IEEE.

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