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Asst. Prof. Dr. Kotchaporn Karoon
ผู้ช่วยศาสตราจารย์ ดร.กชพร การุณ
Department of Mathematics
Faculty of Science, Naresuan University
Naresuan University
Expertise
ewma control chart
statistical process control
average run length
autoregressive models
time series analysis
statistical quality control
integral equation methods
Forecasting
Statistical Analysis
hypothesis testing
+5 more
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kotchapornk@nu.ac.th
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Year
Citations
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Q (SJR)
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1
Explicit Run Length Evaluation Under Asymmetric One-Sided and Symmetric Two-Sided Control-Limit Schemes for a Cubic Trend AR Model and Its Application
K Karoon, Y Areepong
Symmetry 18 (10), 1620, 2026
2026
0
Q3
Q3
2
Explicit ARL Derivation of Extended EWMA Control Chart to Detect Changes in the First-Order SAR with Quadratic Trend and Its Application.
Y Areepong, K Karoon
IAENG International Journal of Applied Mathematics 56 (5), 1924, 2026
2026
0
Q3
Q3
3
Explicit Closed-Form Expression for Run-Length Evaluation of the Double-Modified EWMA Control Chart Under ARX and ARFIX Models: Application to Major Crude Oil Benchmarks
K Karoon, S Sukparungsee, Y Areepong
Symmetry 18 (6), 1004, 2026
2026
1
Q3
Q3
4
Evaluating the Performance of Extended EWMA Control Chart for Detecting Changes in Seasonal AR with Trend Models: An Application to Commodity Price Series.
Y Areepong, K Karoon
IAENG International Journal of Computer Science 52 (10), 2025
2025
0
Q3
Q3
5
Capability of New Modified EWMA Control Chart for Integrated and Fractionally Integrated Time Series: Application to US Stock Prices
K Karoon, Y Areepong
Symmetry 18 (1), 5, 2025
2025
3
Q3
Q3
6
The efficiency of the new extended EWMA control chart for detecting changes under an autoregressive model and its application
K Karoon, Y Areepong
Symmetry 17 (1), 104, 2025
2025
13
Q3
Q3
7
Developed ARL by Integral Equation Solutions to Monitor Changes under Autocorrelated Data for the DEWMA Chart.
Y Areepong, K Karoon
IAENG International Journal of Applied Mathematics 54 (8), 2024
2024
1
Q3
Q3
8
Detection Capability of the DEWMA Chart Using Explicit Run Length Solutions: A Case Study on Data of Gross Domestic Product.
Y Areepong, K Karoon
Engineering Letters 32 (7), 1300, 2024
2024
3
N/A
Q3
9
Enhancing the performance of an adjusted MEWMA control chart running on trend and quadratic trend autoregressive models
K Karoon, Y Areepong
Lobachevskii Journal of Mathematics 45 (4), 1601-1617, 2024
2024
6
Q2
Q2
10
Explicit ARL formulas on DEWMA chart for seasonal autoregressive model with application in air pollution
Y Areepong, K Karoon
IAENG International Journal of Computer Science 50 (4), 1202-1220, 2023
2023
4
Q3
Q3
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