Kuson, Pramote

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Kuson, Pramote
Alternative Name
Kuson, P.
Main Affiliation
Email
pramote.ku@kmitl.ac.th

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    Item type:Publication,
    Transflection Near-infrared Spectroscopy Combined with Machine Learning for Mechanical Stability Time Evaluation in Concentrated Rubber Latex
    (2023-01-01)
    Suttho, Pisit
    ;
    Phetpan, Kittisak
    ;
    Sirisomboon, Panmanas
    ;
    Lim, Chin Hock
    ;
    Ruttanadech, Nuttapong
    This study aims to apply near-infrared spectroscopy (NIRS) in transflection mode combined with a machine learning approach to evaluate the mechanical stability time (MST) in Para concentrated rubber latex. Four supervised learning algorithms, including principal component regression (PCR), partial least squares regression (PLSR), support vector regression (SVR) and random forest regression (RFR), were employed to relate the NIR spectra with the MST degree of the latex samples. A comparison of predictive performance among these different algorithms was performed. The RFR model exhibited the best fitting performance with a coefficient of determination for calibration (R2) and root mean square error of calibration (RMSEC) of 0.95 and 37 seconds, respectively. In addition, the RFR-based model outperformed all others with its predictive performance, presenting coefficient of determination for prediction (r2) and root mean square error of prediction (RMSEP) of 0.64 and 91 seconds, respectively. Based on these results, this study could imply that the relationship between the NIR spectra and the change in the MST degree of the samples tends to be nonlinear.
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    Item type:Publication,
    Measuring the impact of tractor trailers on soil compaction for typical sugarcane-haulage operations in Thailand
    (2017-04-01)
    Thungsotanon, Dithaporn
    ;
    Usaborisut, Prathuang
    ;
    Kuson, Pramote
    ;
    Kulketwong, Chompoonud
    ;
    Abdullakasim, Wanrat
    Mechanization associated with operations in sugarcane production may lead to severe soil compaction. Soils may be particularly susceptible during harvesting and transport of sugarcane from the fields. A tractor towing a trailer can be a useful mean of sugarcane transport even in moist soil, but this can lead to soil compaction. In this study, the influence of tractor traffic when towing two types of trailers, i.e. a full-trailer (one on the front and two axles tandem on the rear) and a semitrailer (two axles tandem), were studied. The results showed that after the passage of a tractortowed trailer, soil bulk density in the test field was increased significantly. The passage of a tractor-towed trailer increased the penetration resistance to more than 3 MPa. The effect of a vehicle passage could reach to soil depths exceeding 45 cm, and increased as axle load increased. Analysis of the soil stresses indicated that the soil had been subjected not only to the compression stress but also the shear stress. The maximum principal stress (s1) generated by a tractor-towed semi-trailer was high. Further study should determine the thresholds for carried weight on different soil conditions in order to avoid excessive soil compaction.