Hyosung Hwang

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The purpose of this paper is to describe a cooperated low power operation, Night-Watch mechanism. The Night- Watch mechanism reduces useless channel scanning of the container security device (CSD) based on IEEE 802.15.4. In order to reduce energy consumption of the device, the Night- Watch mechanism uses the specific feature that a CSD moves as a group with(More)
This paper aims to propose a gradient of learnability as a criterion for setting priorities in pronunciation teaching. A total of 40 Korean subjects (mostly aged 12 year) were tested on their discrimination ability of English sounds before and after participating in a high variability phonetic training (HVPT) program for 4 weeks. This study shows highly(More)
This study evaluated Korean early learners’ production of English vowels and consonants before and after high variability phonetic training (HVPT), for the purpose of investigating the effects of perceptual training on speech production. Korean learners aged 11-12 were trained to discriminate multiple sets of English vowel and consonant contrasts, and their(More)
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