The National Taiwan University of Science and Technology , commonly referred to as Taiwan Tech, is a public/national technological university located in Taipei, Taiwan. Taiwan Tech was established in 1974, as the first and the leading higher education institution of its kind within Taiwan's technical and vocational education system. The university is ranked 353 among world universities in the Times Higher Education-QS World University Rankings 2013.The university is also ranked 52 among Asian universities in the Times Higher Education-QS World University Rankings 2013. NTUST Taiwan was also ranked as Asia's 10th best institute in science and technology.Taiwan Tech enrolled 5,645 undergraduates and 4,744 graduate students, and employed 414 full-time faculties and about 318 staff members in 2013. The university’s 14 departments and 24 graduate programs are divided into the following 7 colleges, College of Engineering, College of Electrical Engineering and Computer Science, School of Management, College of Design, College of Liberal Arts and Social science, College of Intellectual Property Studies, and Honors College.Taiwan Tech has five campuses, the Gongguan campus, located at 43 Keelung Rd, Sec. 4, situated in the south region of Taipei City, being the main campus covers an area of approximately 10 hectares, while the whole campuses cover up to 44.5 hectares. Wikipedia.
Hwang C.-L.,National Taiwan University of Science and Technology
IEEE Transactions on Fuzzy Systems | Year: 2011
Each subsystem of a nonlinear interconnected dynamic delayed system is approximated by a weighted combination of L transfer function delayed systems (TFDSs). The H 2-norm of the difference between the transfer function of a reference model and the closed-loop transfer function of the κth TFDS of subsystem i is then minimized to obtain a suitable frequency response without incurring oscillating and sluggish phenomena. Because of the existence of the disturbance at the output of the κth TFDS, which is not only large but also contains various frequency components, the H ∞-norm of the weighted sensitivity function between the output disturbance and its corresponding output of the κth TFDS is simultaneously minimized to reduce its effect. Furthermore, with proper selection of weighted sensitivity functions, certain specific modes of the output disturbance can be eliminated. Finally, two simulations are performed; one is the simulation of our designed TFDSs with different delays or nonminimum phases, and the other is the simulation of an internet-based intelligent space for the trajectory tracking of a car-like wheeled robot system. We demonstrate the effectiveness and efficiency of the proposed control. The main contributions of this paper are twofold. First, the control can simultaneously attain robust performance through the mixed H 2/H ∞ optimization with a Smith predictor and achieve the robust stability via L 2 N stable with finite gain. Second, fuzzy observer is not needed. © 2010 IEEE.
Liou H.M.,National Taiwan University of Science and Technology
Renewable and Sustainable Energy Reviews | Year: 2010
Under the current wave of international responses to the growing threat of climate change, Taiwan cannot afford to step back from its goal of advancing its renewable energy, strengthening its energy self sufficiency and energy security. This paper will first analyze the high level dependency structure of Taiwan's energy demands; then we will explore Taiwan current situation in terms of renewable energy development; furthermore from an overview of the course of changes and development in Taiwan's energy policy, highlight the commitment to and aims of Taiwan's Renewable Energy Development, made by the government at the Annual National Energy Conference. Fourth, we shall analyse technological R&D, incentives, taxes, market reforms and other related policy tools. Fifth, in light of public announcements and budgets set in recent years for Taiwan's renewable energy research plan, highlight main strategies being given impetus by the government. Sixth, the author will discuss the implications of recent significant legal reforms to the development of renewable energy in Taiwan and from the correlating aspects of industrial structures and energy consumption, take the first steps in emphasizing the urgent need for adjustments to be made to Taiwan's industrial structure. Finally, this paper will conclude by examining current policies, legislation and strategies which are in place to promote this area in Taiwan and discuss the potential competitiveness and future scenarios which the development of Renewable Energy could mean for Taiwan. © 2010 Elsevier Ltd. All rights reserved.
Ho C.-H.,National Taiwan University of Science and Technology
Journal of Materials Chemistry | Year: 2011
β-In2S3 is a nontoxic window layer material usually used in a thin-film solar cell. Transition metal (TM)-incorporated In2S3 has been proposed to promote conversion efficiency in In2S3 because multi-photon absorption by an intermediate band (IB) would happen in the sulfide. In this paper, band-edge and photoelectric-conversion properties of Nb-substituted In2S 3 have been probed by thermoreflectance (TR), photoconductivity (PC), and photo-voltage-current (Photo V-I) measurements. The crystals of niobium-incorporated In2S3 with different Nb contents of In1.99S3:Nb0.01, In1.995S 3:Nb0.005, and undoped In2S3 were grown by chemical vapor transport (CVT) method using ICl3 as a transport agent. X-ray diffraction measurements showed that the as-grown In 2S3:Nb compounds are β-phase crystals with tetragonal structure. Lattice constants of the β-In2S3:Nb show shrinkage with the increase of the Nb content in the In2S 3. Experimental TR spectra reveal four transition features including direct gap (E0), valence band to donor (EVS), valence band to IB (EIB), and acceptor to IB [Ed(IB)] transitions detected in the Nb-substituted In2S3 compounds. The band gap (E0) shows a reduction and the crystal color changes from fresh red, to red, to dark red with increasing Nb content in the undoped β-In2S3, β-In1.995S 3:Nb0.005, and β-In1.99S 3:Nb0.01. The PC and Photo V-I measurements verified that high photoelectric-conversion efficiency occurred in the β-In 2S3 with higher niobium content. The intermediate band (IB) was formed by Nb substitution with indium in the β-In 2S3 [i.e. detected by EIB≈1.52 eV and E d(IB) ≈ 1.42 eV]. The IB state should mainly dominate the multi-photon absorption capacity and enhance the photoelectric-conversion yield in the indium sulfide. © 2011 The Royal Society of Chemistry.
Hou H.-T.,National Taiwan University of Science and Technology
Computers and Education | Year: 2011
In some higher education courses that focus on case studies, teachers can provide situated scenarios (such as business bottlenecks and medical cases) and problem-solving discussion tasks for students to promote their cognitive skills. There is limited research on the content, performance, and behavioral patterns of teaching using online discussions and integrated situated scenarios. This case study empirically explored the learning process of adopting collaborative online instructional discussion activities for the purpose of problem-solving using situated scenarios in a higher education course. Thirty-two university students carried out problem-solving activities on case scenarios and problem-solving tasks assigned by the teacher on the discussion forum. Two forms of instructional activities were considered: 1) problem-solving in a given scenario and 2) problem-solving when learners play roles in a given scenario. The activities mentioned above were each implemented for a week. Using analytical methods that combined qualitative and quantitative approaches, we conducted quantitative content analysis, qualitative protocol analysis, and cluster analysis. We compared the differences in the quality of discussions, patterns of cognitive structure, and patterns of the clusters of possible discussion behaviors. Our study suggests that, when compared to general situated learning activity, discussions are of better quality when they involve a role-playing activity, which also yields the most diverse options for solutions. However, when learners engage in either approach to situated learning, the cognitive aspects of application, evaluation, and innovation are often still found lacking. Our study discusses the observed behavioral patterns and learning-related limitations of these activities and provides specific recommendations for teachers and researchers. © 2010 Elsevier Ltd. All rights reserved.
Hou H.-T.,National Taiwan University of Science and Technology
Computers and Education | Year: 2012
Massively multiple online role-playing games (MMORPGs) are very popular among students. Educational MMORPGs, however, are very rare, as are studies on gamers' behavioral patterns during such games. The current study is an empirical observation and analysis of the behavioral patterns of 100 gamers participating in an educational MMORPG called Talking Island ©. In our study, we recorded and summarized the gaming behaviors demonstrated by these participants over 335 days of observation from December 2009 to October 2010. We coded the recorded behaviors and conducted a frequency analysis, sequential analysis and cluster analysis to explore the behavioral distributions, behavioral-frequency transition and behavior-cluster patterns in the MMORPG. Gender differences in behavioral patterns were also compared and discussed. Based on the results, we discuss the potential and limitations of the game and provide suggestions for future research on and the development of educational MMORPGs. © 2012 Elsevier Ltd. All rights reserved.