Volume 19 Issue 7 - September 9, 2011 PDF
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Research Express@NCKU Sep. 9 ~ Sep. 15, 2011

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Integrated 2 × 2 Thermooptic Silicon Oxynitride Optical Waveguide Switch Based on the Multimode Interference Effect
Ricky W. Chuang

The effect of multimode interference (MMI) have been utilized quite frequently to fabricate a variety of interesting integrated waveguide devices including N×N power splitters/combiners [1], switches based on Mach-Zehnder interferometers (MZIs) [2], optical multiplexers/demultiplexers [3], and ring lasers [4]. What make these MMI-based devices so popular obviously are due to their …

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Alternative Prior Assumptions for Improving the Performance of Naïve Bayesian Classifiers
Tzu-Tsung Wong

Naïve Bayesian classifiers are a widely used technique for classification, because its computational efficiency is high.  From the viewpoint of classification accuracy, the naïve Bayesian classifier works well, and sometimes outperforms other classification tools.  There are two essential assumptions for the operation of naïve Bayesian classifiers.  The first is that all attributes are …

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The effects of peak temperature and cooling rate on the susceptibility to intergranular corrosion of alloy 690 by laser beam and gas tungsten arc welding
Hwa-Teng Lee

1. Introduction

Austenitic nickel-based alloys are extensively employed in components of nuclear power plants. They are typically fabricated using a conventional arc welding process, such as gas tungsten arc welding (GTAW) or shielded metal arc welding (SMAW). However, such welding techniques generate a tremendous amount of heat within the fusion zone (FZ) and the heat affected zone …

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Multiple peer assessment modes to augment online student question-generation processes
Fu-Yun Yu

Introduction
Contemporary educational theories, paradigms (including constructivism, self-determination metacognition and group genius, etc.) and empirical evidence generally support a student-generated questions approach to learning for the facilitation of cognitive development and meaningful learning in students. In view of these along with the advantageous features of network technology …

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