Browsing by Author "Lin, HM"

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Cognitive-metacognitive and content-technical aspects of constructivist Internet-based learning environments: a LISREL analysis
(2004-11-01)
Wen, MCL
;
Tsai, CC
;
Lin, HM
;
Chuang, SC
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教育研究所
Through a LISREL analysis, this study validated the Constructivist Internet-based Learning Environment Survey (CILES). CILES consisted of six scales, sorted by two aspects. The first aspect, the cognitive-metacognitive aspect, included the scales of student negotiation, inquiry learning, and reflective thinking, whereas the second aspect, the content-technical aspect, involved the scales of Relevance, Ease of Use, and Challenge. A LISREL structural model was also proposed to examine the relationships between students' responses across these two aspects. Survey responses gathered from 483 high school students in Taiwan were the research data for this study. The results from the LISREL confirmatory analysis showed that CILES had highly satisfactory validity and reliability to assess students' preferences for constructivist Internet-based learning environments. Moreover, the structural model indicated that the Internet learning environments that challenged students' existing concepts could facilitate their preferences for student negotiation.. inquiry learning and reflective thinking activities. It is proposed that the Internet can have rich connections with numerous resources and a variety of perspectives, thus constructing appropriate learning environments to provide different kinds of challenges for learners. (C) 2003 Elsevier Ltd. All rights reserved.
Electrochemical study on screen-printed carbon electrodes with modification by iron nanoparticles in Fe(CN)(6)(4-/3-) redox system
(2005-10-01)
Lee, SH
;
Fang, HY
;
Chen, WC
;
Lin, HM
;
Chang, CA
The remarkable enhancement of electron transfer on screen-printed carbon electrodes (SPCEs) with modification by iron nanoparticles (Fe-nano), coupled with Fe(CN)(6)(4-/3-) redox species, was characterized with an increase of electroactive area (A(ea)) at electrode surface together with a decrease of heterogeneous. electron transfer rate constant (k degrees) in the system. Hence, Fe-nano-Fe(CN)(6)(3-) SPCEs with deposition of glucose oxidase (GOD) demonstrated a higher sensitivity to various glucose concentrations than Fe(CN)(6)(3-)/GOD-deposited SPCEs. In addition, an inhibited diffusion current from cyclic voltammograms was also observed with an increase in redox concentration and complicated the estimation of A(ea). Further analysis by the electrochemical impedance method, it was shown that this effect might be resulted from the electrode surface blocking by the products of activated complex decomposition.
On compliance test of on-chip bus for SOC
(2004)
Lin, HM
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Yen, CC
;
Shih, CH
;
Jou, JY
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電子工程學系及電子研究所
In this paper, we employ a monitor-based approach for on-chip bus (OCB) compliance test. To describe the OCB protocols, we propose a FSM model, which can help to extract the necessary properties systematically and verify the data part of a bus transfer efficiently. To demonstrate our methodology, we illustrate two OCB protocols, WISHBONE and AMBA AHB, as the study cases. The experimental results show that we can verify the OCB protocols efficiently and detect the design errors when tests fail.
On computing the minimum feedback vertex set of a directed graph by contraction operations
(2000-03-01)
Lin, HM
;
Jou, JY
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電子工程學系及電子研究所
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Department of Electronics Engineering and Institute of Electronics
Finding the minimum feedback vertex set (MFVS) in a graph is an important problem for a variety of computer-aided design (CAD) applications and graph reduction plays an important role in solving this intractable problem. This paper is largely concerned with three new and powerful reduction operations. Each of these operations defines a new class of graphs, strictly larger than the class of contractible graphs [Levy and Low (1988)], in which the MFVS can be found in polynomial-time complexity. Based on these operations, an exact algorithm run on branch and bound manner is developed. This exact algorithm uses a good heuristic to find out an initial solution and a good bounding strategy to prune the solution space. To demonstrate the efficiency of our algorithms, we have implemented our algorithms and applied them to solving the partial scan problem in ISCAS'89 benchmarks. The experimental results show that if our three new contraction operations are applied, 27 out of 31 circuits in ISCAS'89 benchmarks can be fully reduced. Otherwise, only 12 out of 31 can be fully reduced. Furthermore, for all ISCAS'89 benchmarks our exact algorithm can fmd the exact cutsets in less than 3 s (CPU time) on SUN-UltraII workstation. Therefore, the new contraction operations and our algorithms are demonstrated to be very effective in the partial scan application.
Title on flip-flop inference in HDL synthesis
(2001)
Lin, HM
;
Jou, JY
;
電機學院
;
College of Electrical and Computer Engineering
In HDL synthesis at register transfer level (RTL), edge-triggered flip-flops are inferred to keep the consistence of the memory semantics between the target synthesized netlist and the original design written in hardware description language (HDL). Since typical synthesizers use ad hoc method to solve the flip-flop inference problem, either superfluous flip-flops or unreasonable limitations on coding style are necessary. Even worse, the ad hoc algorithms adopted by the typical synthesizers could incur the mismatches between synthesis and simulation. In this paper, we propose a uniform framework based on a concept called MC flip-flop to infer flip-flops systematically and correctly. Our approach does not impose limitations on coding style and does not infer superfluous flip-flops. Furthermore, it does not suffer from the mismatches between synthesis and simulation and can synthesize the HDL descriptions that cannot be synthesized by typical synthesizers.