Threepak, Thanunchai

Preferred name

Alternative Name

Threepak, T.

Main Affiliation

School of Engineering

thanunchai.th@kmitl.ac.th

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Feature Selection Method Based on Correlation Tree
(2020-01-01)
Yapila, Prajak
;
Threepak, Thanunchai
Machine learning is one of techniques adapted to detect intrusion for cyber security. One of importance techniques to find anomaly is classification. But classification with huge dataset has the resources and time consumption. Feature selection is choice to reduce the data dimension to improve processing performance. In this paper, we introduce the new feature selection method that selects some fields of data set using position of each feature in correlation tree. Then, the result from the correlation tree feature selection of KDDCUP’99 data set are compared with two feature selection technique, correlation of coefficient (CC-type) and BFS by using three reference classifier, Decision Tree (DT), Random Forest (RF), and Naive Bayes (NB).
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Quantum cryptography via a wavelength router for internet security
(2010-11-01)
Threepak, T.
;
Mitatha, S.
;
Luangvilay, X.
;
Yupapin, P. P.
We propose a new system of quantum cryptography for internet security using Gaussian pulses propagating within a nonlinear ring resonator system, quantum processor, and a wavelength router. To increase the channel capacity and security, the multiplexer is operated incorporating a quantum processing unit via an optical multiplexer. The transmission part can be used to generate the high capacity quantum codes within the series of microring resonators and an add/drop filter. The receiver part can be communicated by using the quantum key (quantum bit, qubit) via a wavelength router and quantum processors. The reference states can be recognized by using the cloning unit, which is operated by the add/drop filter, where the communication between Alice and Bob can be performed. Results obtained have shown that the correlated photons can be generated and formed the entangled photon pair, which is allowed to form the secret key between Alice and Bob. In application, the embedded system within the computer processing unit is available for quantum computer. Furthermore, such a concept is also available for internet application via hybrid communications, for instance, wire/wireless, satellite, which can be used to form the internet security. © 2010 Wiley Periodicals, Inc.
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New wavelength division multiplexing bands generated by using a Gaussian pulse in a microring resonator system
(2009-12-01)
Polar, A.
;
Threepak, T.
;
Mitatha, S.
;
Bunyatnoparat, P.
;
Yupapin, P. P.
We propose a novel system that can be used to generate the new optical communication bandwidths (wavelength bands) using a Gaussian pulse propagating within a nonlinear microring resonator system. By using the wide range of the Gaussian input pulses, for instance, when the input pulses of the common lasers with center wavelengths from 400-1,400 nm are used. Results obtained have shown that more available wavelength bands from the different center wavelengths can be generated, which can be used to form new dense wavelength division multiplexing bands, whereas the use of the very high channel capacity for personal wavelength and network applications is plausible. ©2009 IEEE.
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Defect detection of GPS trackers through data visualization
(2019-07-01)
Chawuthai, Rathachai
;
Threepak, Thanunchai
A Global Positioning System (GPS) tracker installed in a vehicle is commonly used to improve logistics management processes and transportation safety. All GPS trackers must send data including locations, timestamps, and speeds to a server all the time. In case of a device failure, it can be checked by incomplete data; however, a device's sensor inaccuracy, which can create negative consequences to many parties, becomes a challenging issue to detect. With this reason, this paper aims to adopt data visualization to find out the defect of GPS trackers. It has been found that some defects noticed by a visualization were reported, and providers got advantage of this result to maintain their devices.
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Novel quantum-molecular transporter and networking via a wavelength router
(2010-06-01)
Threepak, T.
;
Louangvilay, X.
;
Mitatha, S.
;
Yupapin, P. P.
We propose a new system of a molecular-quantum networking using the optical tweezers, where the transportation of molecules via wavelength router and network can be performed. In addition, the molecule transportation states can be identified by using the quantum states of the transporters, which can be formed in the network. The proposed fabricated material used is InGaAsP/InP, which can provide the required output signals. The design system consists of a nonlinear microring/nanoring resonator system incorporating an add/ drop filter and a wavelength router. The transporter can be formed by the dark soliton, and the optical transporter is tuned and amplified by the bright soliton and transmitted into the network. In applications, the use of the proposed system incorporating a nanoscale communication and networking via wavelength router is available for long-distance link. © 2010 Wiley Periodicals, Inc.
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Dynamic pulse reshaping generation using coherent control for ultra fast switching use
(2010-07-01)
Threepak, Thanunchai
;
Mitatha, Somsak
;
Yupapin, P. P.
In this letter, we present a new technique for pulse shaping, whereas the dynamic pulse reshaping of the dark-bright soliton conversion is investigated and seen during the propagation within an add/drop filter. The dark soliton pulse is reshaped by adjusting bright soliton input, whose dispersions are adjusted to be cancelled. This technique exploits the well known property of the ultrafast pulse in which the desired output can be stored and form in the same manner of the adiabatic light pulse (cold light). This technique presents inherent advantages of fast light pulse, whereas the fast in time of 1 ns is noted. © 2010 Wiley Periodicals, Inc.
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Bittorrent cache using virtual tracker
(2006-12-01)
Threepak, Thanunchai
Bittorrent is powerful peer-to-peer network protocol for sharing individual resources. It is very popular among internet users because there are many easy-to-use bittorrent clients and many resources in bittorrent network. In other hand, bittorrent peer-to-peer behavior generate a lot of traffic and bring the network bottleneck at internet connection line in many organizations This paper proposes a model of bittorrent cache system which using transparent tracker for reducing download traffic from all active downloading tasks in local network, show some experimental results to reduce all download traffic, and show deterministic fluid model to analyze the big picture of the system. © 2006 IEEE.
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A novel data transmission security via a noisy channel using a microring resonator system
(2010-01-01)
Threepak, T.
;
Mitatha, S.
;
Yupapin, P. P.
A novel encryption methods using microring resonator is presented. By using the proposed system, the confidentiality of information in optical communication can be formed. In this paper, chaostic noise sophisticates irreversible and unpredictable in nonlinear microring resonator that is used as the encrypted function. In our successfully simulation results, the noisy signals/channels created by the microring resonator are combined with the encoded information to protect the man-in-the-middle attacks (decipher). By using the extremely small processing device, the propose design can be easily applied to secure any form of communication in wireless network, mobile communication network and military applications with low power consumption and very high-speed procedures.
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Freight Traffic Analytics from National Truck GPS Data in Thailand
(2018-01-01)
Chankaew, Nattaphon
;
Sumalee, Agachai
;
Treerapot, Siripirote
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Threepak, Thanunchai
;
Ho, H. W.
Recently, demand of freight transport increases tremendously and cause serious impacts on traffic congestion and air quality. In 2015, The Department of Land Transport of Thailand has introduced a project named "Nationwide Confidence with GPS Onboard" to install GPS tracking system on all trucks in Thailand. This project provides new sources of data in analyzing the freight-related traffics and designing remedial measures for freight-related issues. This paper aims to demonstrate the use of GPS data in determining truck activities, estimating truck origin-destination matrix and estimating the flow of different commodities. Thailand is used as a case study to demonstrate the results.
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Microring Switching Control Using Plasmonic Ring Resonator Circuits for Super-Channel Use
(2019-12-01)
Tunsiri, Surachai
;
Thammawongsa, Nopparat
;
Threepak, Thanunchai
;
Mitatha, Somsak
;
Yupapin, Preecha
The multi-wavelength selection and switching system using the hybrid plasmonic add-drop ring resonator (HPARR) for optical communication is proposed for multi-carrier super-channel-based designed. The plasmonic polariton technique applied in the ring resonator mode to the alternate waveguide interferometer switches the multi-wavelength laser emission in the various ranges. The combination of curvature-coupled plasmon ring and substances with different refractive index allows switching the multi-wavelength emission to shorter the free spectrum range (FSR) and specific wavelengths, without an applied pump signal or adjusted the ring size. It is suitable for the super-channel of wavelength division multiplex (WDM) in the future optical network.

Threepak, Thanunchai

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