KO Hla Myo Tun

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Jeffrey Vetter

Oak Ridge National Laboratory

Laura Carrington

Volker Weinberg

Leibniz Supercomputing Centre

Ranieri Baraglia

Consiglio Nazionale delle Ricerche (CNR)

A. Grnarov

South East European Research Centre (SEERC)

David A. Bader

Georgia Institute of Technology

Mehmet R Eskicioglu

University of Manitoba

Mats Brorsson

Geoffrey Fox

Indiana University

Chunhua Liao

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Papers by KO Hla Myo Tun

The Future of Visual BASIC.NET Based Simulation for Industrial Automation: Distributed Control Systems

AIP Conference Proceedings, 2008

Visual Basic.net (VB.net) based simulation presents a unique opportunity for revolutionary change... more

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Development of process monitoring system in drilling process using fuzzy rules

International Journal of Systems Assurance Engineering and Management, Mar 1, 2011

Real-Time Interactive Shape Editing Design Using OpenGL

International Journal of Information and Communication Technology, Dec 1, 2011

Distributed Control System for Micro-factory Using Visual Studio.Net

Advanced industrial automation system can be monitored and controlled by real time situation is m... more Advanced industrial automation system can be monitored and controlled by real time situation is more useful than other formal systems in the sector of industrial life. Distributed Control System (DCS) is more popular than any other control systems in the modern industrial processes. This research leads to "Real Time Graphical User Interface Monitoring System" for Micro-Factory. The current research project is based on the construction of DCS based Micro-factory. The Industrial Local Area Network (LAN) is built between the server for the operator and the clients for the two robots control and only one CNC milling machine. The client-server model is more suitable for this research. The existing DCS can be divided into two sections: the first one is cheap and inflexible control and the second one is expensive but it is flexible control system. This research leads to cheap and flexible distributed control system. In this research, the simulation of the whole process is described in realtime condition by using Visual Basic.Net programming under Visual Studio 2005 software. The parallel ports of Client computers and the controllers have been communicated with parallel port interface VB.Net program.

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Integrated WiFi/WiMAX Heterogeneous Wireless Network with Minimum Cost Flow Robust Optimization Uncertain Demand Problem

International Journal of Information and Communication Technology, Dec 1, 2010

The next generation wireless communications systems are envisioned to integrate multiple wireless... more The next generation wireless communications systems are envisioned to integrate multiple wireless access technologies (i.e., IEEE 802.11-based WiFi WLAN and IEEE 802.16-based WiMAX WMAN) to provide high-speed communications services to mobile users in a seamless manner. In such a heterogeneous wireless network, the users are able to access different wireless networks according to their preference, performance and cost. In this research, the radio resource management for this integrated heterogeneous wireless network will be proposed. At the mobile terminal, network selection algorithm will be developed to make the decision of connection (either WiFi or WiMAX or both) so that the QoS requirements are satisfied while the connection cost is minimized. An optimization problem will be formulated and solved for an optimal decision. In addition, the applications of this integrated heterogeneous wireless networks in vehicular network and e-Health will be explored.

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A System Analysis Approach to Robot Gripper Control Using Phase Lag Compensator Bode Designs

AIP Conference Proceedings, 2008

In this paper, we introduce the result comparisons that were developed for the phase lag compensa... more

Design and Construction of Intelligent Traffic Light Control System Using Fuzzy Logic

AIP Conference Proceedings, 2008

Vehicular travel is increasing throughout the world, particularly in large urban areas. Therefore... more

Design analysis of phase lead compensation for typical laser guided missile control system using MATLAB bode plots

2008 10th International Conference on Control Automation Robotics and Vision, 2008

... Zaw Min Naing Dept: of Electronic Engineering Yangon Technological University zawminnaing@pma... more

Analysis of Neural Network Based Photo to Caricature Transformation Using MATLAB

Creating computer generated caricature from given photograph will be a great source of entertainm... more Creating computer generated caricature from given photograph will be a great source of entertainment to all people because caricatures are funny, humorous and satirical. To generate caricature it requires artificial intelligence to capture the non-linear relationships between photograph and drawn caricature. It means that computer has to think itself what will be caricature for the given photograph. A formalization of this idea, Exaggerating the Difference from the Mean (EDFM) is widely accepted among caricaturists to be the driving factor behind caricature generation. As artificial intelligence is based on neural network, the key research is required to investigate neural network and design its implementation. No attempt has been taken in the past to identify these distinct drawing styles. Yet the proper identification of the drawing style of an artist will allow the accurate modeling of a personalized exaggeration process, leading to fully automatic caricature generation with increased accuracy. In this paper the author provides experimental results and detailed analysis to prove that a Cascade Correlation Neural Network (CCNN) can be successfully used for transforming caricature generation from photos.

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Implementation of Communication Satellite Orbit Controller Design Using State Space Techniques

Asean Journal on Science and Technology For Development, Dec 1, 2012

This research work is about the improvement and implementation of orbit control system for the co... more This research work is about the improvement and implementation of orbit control system for the communication satellite in geostationary earth orbit. The variety of influences, notably solar winds and the irregular distribution of gravities of moon and earth cause the drifting gradually out of its correct orbital position. Thus its orbital position must be corrected from time to time to ensure the proper communications. On-board thrusters provide in-orbit propulsion to bring back the satellite into the desired orbit. The thrust produced by the on-board thrusters installed in the radial and tangential direction can control the altitude of the satellite. Thus the feedback dynamic control system is considered with the application of two thrusters. The mathematical model of the satellite orbiting into a circular orbit is derived by using Newton law. The differential state equations can be linerized, and then the Jacobian matrix can be utilized to simplify the method of solution. The satellite altitude is set to 35786 km above from the earth surface and then the linearized four state models are calculated. The stability of the system is determined by applying the controllability and observability using MATLAB function. The evolved state feedback model is used to locate the desired poles according to the pole placement technique. The state feedback gain matrix K of the close-loop system is determined by applying Ackermann's formula for controller. The design calculations of the state feedback controller are described. . The stability of orbit controller is analyzed using MATLAB. The presented simulation results emphasize the effectiveness of the designed control system.

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Design and Simulation of Vehicle Lane Tracking Using Matlab

Asian Journal of Engineering and Technology, May 19, 2014

Design analysis of phase lead compensation for typical laser guided missile control system using MATLAB bode plots

2008 10th International Conference on Control, Automation, Robotics and Vision, 2008

... Zaw Min Naing Dept: of Electronic Engineering Yangon Technological University zawminnaing@pma... more

Finite-difference time-domain analysis of a stacked dual-frequency microstrip planar inverted-F antenna for mobile telephone handsets

IEEE Transactions on Antennas and Propagation, 2001

ABSTRACT We describe a stacked, dual-frequency microstrip planar inverted-F antenna (DF-PIFA) for... more ABSTRACT We describe a stacked, dual-frequency microstrip planar inverted-F antenna (DF-PIFA) for mobile telephone handsets that can concurrently work in two frequency-bands, viz., those associated with the GSM and DCS 1800 systems operating at 0.9 GHz and 1.8 GHz, respectively. The proposed microstrip DF-PIFA is fed by a coaxial line, as opposed to two separated feed lines used in the conventional design. The design is carried out in a systematic manner and involves two steps. We begin with an initial configuration of the PIFA that is based on a standard design for a microstrip patch antenna fed by a coaxial line and is derived from an empirical approximation in conjunction with a transmission line model. Next, we employ a computer-aided design (CAD) tool, based on the nonuniform finite-difference time-domain (NU-FDTD) Maxwell solver, to optimize the performance characteristics of the DF-PIFA, including the return loss, the matching of the input impedance, and the far-field radiation patterns

Introduction to the Segmented Finite-Difference Time-Domain Method

IEEE Transactions on Magnetics, 2009

In order to estimate path loss in various infrastructure types: tunnels, water distribution netwo... more In order to estimate path loss in various infrastructure types: tunnels, water distribution networks and bridges, we have chosen the well known Finite-Difference Time-Domain (FDTD) technique [1] due to its accuracy, flexibility and potential for visualizing the simulation results. However, problems occur owing to the high memory requirement and heavy computational burden when dealing with these large-scale systems using this technique. Following our previous work on the unique correction factor, which enables us to transform a simply structured 3D FDTD problem into a 2D simulation using the Modified 2D FDTD method [2], in this paper, we propose the Segmented FDTD (SFDTD), which divides the problem space into segments so that the computational redundancy is reduced. This technique also facilitates data reuse that eases the inconvenience imposed by configuration changes at a later date.

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Accurate characterization of planar printed antennas using finite-difference time-domain method

IEEE Transactions on Antennas and Propagation, 1992

Abstract-The finite-difference time-domain method (FDTD) is used to accurately characterize compl... more

Characterization of three-dimensional open dielectric structures using the finite-difference time-domain method

IEEE Transactions on Microwave Theory and Techniques, 1996

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A conformal mesh-generating technique for the conformal finite-difference time-domain (CFDTD) method

IEEE Antennas and Propagation Magazine, 2004

The article presents an efficient conformal mesh generating technique suitable for the Conformal ... more The article presents an efficient conformal mesh generating technique suitable for the Conformal Finite Difference Time Domain (CFDTD) technique. We describe the mesh generation for different types of objects including planar structures (patch antenna and microwave circuits), as well as for arbitrary 3-D structures created by using AutoCAD, GID or other commercial solid modelers. The versatility of the mesh generation tool is illustrated through several examples.

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Efficient Finite-Difference Time-Domain Modeling of Driven Periodic Structures and Related Microwave Circuit Applications

IEEE Transactions on Microwave Theory and Techniques, 2008

The sine-cosine method for the finite-difference time-domain-based dispersion analysis of periodi... more The sine-cosine method for the finite-difference time-domain-based dispersion analysis of periodic structures is extended to incorporate the presence of nonperiodic wideband sources. A new formulation of this method is presented to clearly demonstrate that it can be employed for the characterization of periodic structures over a broad bandwidth. Moreover, its coupling with the array-scanning technique enables the incorporation of nonperiodic sources, thus enabling the fast characterization of driven periodic structures in the time domain via a small number of low-cost simulations. The convergence, accuracy, and efficiency of the proposed method is demonstrated with its application to the analysis of a negative-refractive-index transmission-line "perfect lens" and the successful comparison of simulated with experimental results. Finally, a modified version of this method is proposed for the accelerated simulation of microwave circuit geometries printed on periodic substrates.

$Fig. 3. Unit cell of the 2-D negative and positive-refractive index transmission lines. (a) Negative-refractive index transmission-line unit cell. (b) Positive-re- fractive index transmission-line unit cell. open boundaries in all numerical simulations included in this paper. Moreover, the series capacitor and shunt inductor, shown in Fig. 3(a), are chosen to be C' = 3.34 pF and L = 16.02 nH. The two sine—cosine grids are excited by a 0.5—3-GHz Gabor pulse$

$Fig. 4. (left) Magnitude of the Fourier transform (normalized to its maximum) of a vertical electric field component E, within the substrate of the nega- tive-refractive index transmission-line unit cell of Fig. 3(a), determined by the sine-cosine FDTD for three cases of k,,d,,. (right) Dispersion diagram (T —X ) for the unit cell of Fig. 3(a) determined by HFSS. (a) kid, = 0.08337 rad. (b) kzd, = 0.1677 rad. (c) kpd, = 0.3337 rad.$

$Fig. 6. Vertical electric field F, in the middle of the substrate and along the y-axis in a positive-refractive index transmission line for 5-31 unit cells in the x-direction. A sinusoidal hard source of amplitude 1 V/m is applied at the £’, nodes within the substrate of the first unit cell. Fig. 5. Vertical electric field E, in the middle of the substrate and along the y-axis in a positive-refractive index transmission line that is infinite in the x-di- rection. The sine—-cosine-based array-scanning method with a variable number of k,, points, VV, is used. A sinusoidal hard source of amplitude 1 V/m is applied at the #, nodes within the substrate of the first unit cell.$

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A graphical user interface for a finite difference time domain simulation tool

Network Security, 2000

This paper presents an efficient graphical user interface for the finite difference time domain t... more This paper presents an efficient graphical user interface for the finite difference time domain techniques with emphasis on electromagnetic and antenna applications. The interface is designed for Windows operating systems using combination of programming languages such as Microsoft Visual Basic, Digital Visual Fortran, and the OpenGL 3D graphics API. The interface consists of windows addressing each task in defining the device to be analyzed, the source of the electromagnetic field excitation, the required field parameters to be computed by the finite difference time domain computational engine, and the interactive visualization the parameters for field evolution during the time stepping procedure. One example of simulating a printed antenna is presented

Application of the three-dimensional finite-difference time-domain method to the analysis of planar microstrip circuits

IEEE Transactions on Microwave Theory and Techniques, 1990

Page 1. 849 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TEC&amp;amp;amp;amp;amp;amp;amp;#x27;II... more

The Future of Visual BASIC.NET Based Simulation for Industrial Automation: Distributed Control Systems

AIP Conference Proceedings, 2008

Visual Basic.net (VB.net) based simulation presents a unique opportunity for revolutionary change... more

Download

Development of process monitoring system in drilling process using fuzzy rules

International Journal of Systems Assurance Engineering and Management, Mar 1, 2011

Real-Time Interactive Shape Editing Design Using OpenGL

International Journal of Information and Communication Technology, Dec 1, 2011

Distributed Control System for Micro-factory Using Visual Studio.Net

Download

Integrated WiFi/WiMAX Heterogeneous Wireless Network with Minimum Cost Flow Robust Optimization Uncertain Demand Problem

International Journal of Information and Communication Technology, Dec 1, 2010

Download

A System Analysis Approach to Robot Gripper Control Using Phase Lag Compensator Bode Designs

AIP Conference Proceedings, 2008

In this paper, we introduce the result comparisons that were developed for the phase lag compensa... more

Design and Construction of Intelligent Traffic Light Control System Using Fuzzy Logic

AIP Conference Proceedings, 2008

Vehicular travel is increasing throughout the world, particularly in large urban areas. Therefore... more

Design analysis of phase lead compensation for typical laser guided missile control system using MATLAB bode plots

2008 10th International Conference on Control Automation Robotics and Vision, 2008

... Zaw Min Naing Dept: of Electronic Engineering Yangon Technological University zawminnaing@pma... more

Analysis of Neural Network Based Photo to Caricature Transformation Using MATLAB

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Implementation of Communication Satellite Orbit Controller Design Using State Space Techniques

Asean Journal on Science and Technology For Development, Dec 1, 2012

Download

Design and Simulation of Vehicle Lane Tracking Using Matlab

Asian Journal of Engineering and Technology, May 19, 2014

Design analysis of phase lead compensation for typical laser guided missile control system using MATLAB bode plots

2008 10th International Conference on Control, Automation, Robotics and Vision, 2008

... Zaw Min Naing Dept: of Electronic Engineering Yangon Technological University zawminnaing@pma... more

Finite-difference time-domain analysis of a stacked dual-frequency microstrip planar inverted-F antenna for mobile telephone handsets

IEEE Transactions on Antennas and Propagation, 2001

Introduction to the Segmented Finite-Difference Time-Domain Method

IEEE Transactions on Magnetics, 2009

Download

Accurate characterization of planar printed antennas using finite-difference time-domain method

IEEE Transactions on Antennas and Propagation, 1992

Abstract-The finite-difference time-domain method (FDTD) is used to accurately characterize compl... more

Characterization of three-dimensional open dielectric structures using the finite-difference time-domain method

IEEE Transactions on Microwave Theory and Techniques, 1996

Download

A conformal mesh-generating technique for the conformal finite-difference time-domain (CFDTD) method

IEEE Antennas and Propagation Magazine, 2004

Download

Efficient Finite-Difference Time-Domain Modeling of Driven Periodic Structures and Related Microwave Circuit Applications

IEEE Transactions on Microwave Theory and Techniques, 2008

Download

A graphical user interface for a finite difference time domain simulation tool

Network Security, 2000

Application of the three-dimensional finite-difference time-domain method to the analysis of planar microstrip circuits

IEEE Transactions on Microwave Theory and Techniques, 1990

Page 1. 849 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TEC&amp;amp;amp;amp;amp;amp;amp;#x27;II... more

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