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Presents the front cover of the proceedings of the 2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology.
It is our great pleasure to welcome you to the 9th International conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology; in short form, ECTI-CON 2012, being held in Hua Hin, Thailand on May 16–18, 2012. This conference is held annually with a selective program covering all aspects electrical and computer engineering, as well as diverse applications...
2012 9th International Conference on Electrical Engineering/Eltctronics, Computer, Telecommunications and Infonnation Technology. Copyright 2012 by The Institute of Electrical and Electronics Engineers, Inc. Copyright and Reprint Permission: Abstracting is pennintd with credit to the source. Libraries are permintd to photocopy beyond the limit of US copyright law for provate use of patrons those articles...
Using rigorous analytical treatment by implementing Maxwell's electromagnetic field equations, a description is presented of the transmission characteristics of liquid crystal tapered optical fibers having radially anisotropic liquid crystal clad. Power confinements indicate the maximum power to be in the outermost section, the phenomenon that would be of great importance in optical sensing applications.
This paper presents low-density parity-check (LDPC) code for image transmission system with any desired code lengths. Parity position of sub-block encoder is easily constructed over Rayleigh fading channel. The code is used as forward error correction (FEC) technique to protect transmitted source data over the channel. The sub-block encoder is designed with OFDM modulation at various noises for two...
In this paper, digital image analysis is applied for non-destructive classification of rice and sticky rice seeds that are mixed together. It is a difficult task because of the similar surface color of the seeds. This paper presents an automatic classification method based on RGB color features. Hardware of image capturing is designed using back light source in order to maximize the contrast between...
In a Wireless Sensor Network (WSN), data manipulation and representation is a crucial part and can take a lot of time to be developed from scratch. Although various visualization tools have been created for certain projects so far, these tools can only be used in certain scenarios, due to their hard-coded packet formats and network's properties. To speed up development process, a visualization tool...
In this paper, we present the improvement of optical properties of 1×8 arrayed waveguide grating (AWG) de-multiplexer by adding Transmission Star Couplers (TSC) into Free Propagation Region 1 (FPR1) which has refractive index 1.455. It is found that the appropriate value of refractive index of TSC area is 1.460. Using this method, the insertion loss of AWG decreased from 1.79 dB to 1.58 dB while the...
Diabetic Retinopathy is a medical condition where the retina is damaged because fluid leaks from blood vessels into the retina. The presence of hemorrhages in the retina is the earliest symptom of diabetic retinopathy. The number and shape of hemorrhages is used to indicate the severity of the disease. Early automated hemorrhage detection can help reduce the incidence of blindness. In this paper we...
Design and evaluation of a CORDIC (COordinate Rotation DIgital Computer) algorithm for a floating-point division operation is presented in this paper. In general, division operation based on CORDIC algorithm has a limitation in term of the range of inputs that can be processed by the CORDIC machine to give proper convergence and precise division operation result. A hardware architecture of CORDIC...
Rapid development of network makes it a very important and vulnerable part of every field of life. Many intrusion detection systems are developed to protect the network using signature-based matching technique. For connection oriented protocols, such as Transmission Control Protocol, the data should be reassembled before being scanned by the matching engine. Several techniques are introduced to reassemble...
A transcription of each word can either be produced by rules, statistical models, or retrieved from dictionary. However, the lack of standards and the variation of how a Thai person romanizes his or her name pose transcription a challenging task. Although the dictionary-based approach seems to produce the most accurate result, a letter-to-sound conversion module is necessary for unknown names. We...
This paper presents the design and construction of a light-weight execution-driven cache simulator for multicore CPU. We implement the simulator as a Pin tool, running on top of Pin, a dynamic instrumentation tool developed by Intel. We then use it to study the cache behavior of 13 multithreaded programs selected from the two well-recognized benchmark suites, SPLASH2 and PARSEC. We plan to release...
This paper proposes the control of a line side converter under unbalance voltage conditions for wind turbine system. The control technique is designed to operate under unbalance voltage by independent control between positive and negative components. The converter will regulate the DC link voltage at the specific value (650VDC). To verify an operation of the proposed control, the simulation is conducted...
Today Twitter has become a popular online medium for posting and sharing news and events. Generally, many Twitter posts or “tweets” refer to the same topics or events. Searching on Twitter could return a long list of search results. To solve the problem, we propose an approach for clustering the Twitter search results based on the Suffix Tree Clustering (STC) algorithm. However, two main drawbacks...
Demand side management (DSM) can help reduce demand of the system, resulting in less generating capacity and less total production cost in the future. Generally, each DSM activity, e.g., replacing old with new higher efficiency equipment, has its own cost. Its worth in the system may be used as one of the decision components. Therefore, the methodology in evaluating the DSM worth under the framework...
This paper presents a speech enhancement algorithm for Thai speech corrupted by noise. A Markov random field (MRF) is used to remove noise from the noisy speech. Specifically, the noisy speech is transformed using a short time Fourier transform (STFT) resulting in time-frequency representation coefficients. Then, it is fed into a voiced/unvoiced classification by using voice activity detector (VAD)...
At present, the solar energy is a highly potential alternative for solving the energy crisis and improving system quality. On the other hand, the penetration of PVGS may cause an islanding problem. This paper derives Non Detection Zone (NDZ) of Over/Under voltage and Over/Under frequency method in order to increase accuracy for islanding prevention. In addition to safety issue, this paper proposes...
This paper presents a wideband circular polarization antenna with tuning rectangular slot fed by coplanar waveguide (CPW). The proposed antenna has been designed to enhance widely the impedance bandwidth. Circular polarization is achieved by the slots around two opposite corners of the square slot. A small tuning stub is placed at the end of strip on CPW to obtain a good impedance matching. The proposed...
In this paper, we further evaluate our previously-proposed NewRAPID by comparing with TCP CUBIC and TCP RAPID in the following aspects: intra-protocol fairness, inter-protocol fairness, and convergence time. The result shows that TCP CUBIC provides more intra-protocol fairness than others because of its stability characteristic while TCP RAPID and TCP NewRAPID provide almost the same. Our designed...
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