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Author: search.filters.author.Chamnongthai, Kosin

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    Message from General Chairs
    (2020-11-16)
    Onoye, Takao
    ;
    Chamnongthai, Kosin
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    Learning recommendation with formal concept analysis for intelligent tutoring system
    (2020-10-01)
    Muangprathub, Jirapond
    ;
    Boonjing, Veera
    ;
    Chamnongthai, Kosin
    Computer Science; Learning recommendation; Formal concept analysis; Intelligent tutoring system; Adaptive learning
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    Message from technical program chair
    (2020-01-01)
    Chamnongthai, Kosin
    ;
    Chinnasarn, Krisana
    ;
    So-In, Chakchai
    ;
    Horkeaw, Paramate
    ;
    Phimoltares, Suphakant
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    Message from technical program committee chairs
    (2019-04-10)
    Chamnongthai, Kosin
    ;
    Chinnasarn, Krisana
    ;
    Phimoltares, Suphakant
    ;
    Jaiyen, Saichon
    ;
    Rasmequan, Suwanna
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    Welcome message from the organizing committee
    (2014-01-01)
    Yooyatiwong, Thongchai
    ;
    Choomchuay, Somsak
    ;
    Chamnongthai, Kosin
    ;
    Siririth, Weeraphun
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    General chair/co-chair's message
    (2011-12-01)
    Choomchuay, Somsak
    ;
    Chamnongthai, Kosin
    ;
    Hamamoto, Kazuhiko
    ;
    Tuantranont, Adisorn
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    General chair and co-chairs' message
    (2011-12-01)
    Choomchuay, Somsak
    ;
    Arakawa, Kaoru
    ;
    Chamnongthai, Kosin
    ;
    Suzuki, Masakiyo
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    System design of durian maturity determination using microstrip patch antennas
    (2007-12-01)
    Kittiamornkul, Navapadol
    ;
    Jiraseriamornkul, Kamon
    ;
    Chamnongthai, Kosin
    ;
    Krairiksh, Monai
    ;
    Higuchi, Kohji
    Since Durian has specific properties such as big peel, non-uniform shape, rough skin, etc, the system design of non-destructive maturity determination is hard to perform. This paper proposes the system designing of durian maturity determination using microstrip patch antennas operating 2.45 GHz of microwave frequency and the measurement system which can adjust size, height, etc., to make closed environment. This method can protect the reflection of microwave to environment and measure durian in every size. The results show that this technique can provide fast durian maturity determination at accuracy of 72.22%. © 2007 SICE.
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    Nondestructive durian maturity determination by using microwave free space measurement
    (2006-12-01)
    Rutpralom, Thitipan
    ;
    Chamnongthai, Kosin
    ;
    Kumhom, Pinit
    ;
    Krairiksh, Monai
    Since durian has specific properties such as big peel, non-uniform shape, rough skin, etc. the nondestructive maturity determination is hard to perform. This paper proposes microwave free-space measurement by using 2 waveguide antennas as transmitter and receiver operating in frequency range of 2-3 GHz to determine the insertion loss (S<inf>21</inf>) after passing through durian which can be calculated in term of Complex Permittivity, the results are compared with percentage dry-weight as an standard durian maturity determination. The results show that this technique can provide fast durian maturity determination with 90% accuracy. © 2006 IEEE.
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    Volume measurement of mango by using 2D ellipse model
    (2004-12-01)
    Charoenpong, Theekapun
    ;
    Chamnongthai, Kosin
    ;
    Kamhom, Pinit
    ;
    Krairiksh, Monai
    This paper presents the volume measurement system for mango. Since mango is a fruit that has smooth surface with mostly symmetry shape, we propose to employ two views as input data in order to obtain the volume. The experiments on 30 mangoes in general size showed the root mean squared (RMS) error of volume is 2.098% and 8.420% of the mangoes in dwarf size and high concave-shape. The estimated value strongly agreed with the actual volume. © 2004 IEEE.