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Evaluating and possibly improving the fault tolerance and error detecting mechanisms is becoming a key issue when designing safety-critical electronic systems. The proposed approach is based on simulation-based fault injection and allows the analysis of the system behavior when faults occur. The paper describes how a microprocessor board employed in an automated light-metro control system has been...
This paper presents a burst loss rate (BLR) differentiation scheme for optical burst switching (OBS) network. An analytical model for the burst loss rate of the differentiation scheme is presented for different service classes. The effect of number of wavelengths is examined on the burst loss rate of two different service classes. An algorithm is also developed to calculate the number of wavelengths...
In this paper, we propose an efficient motion adaptive de-interlacing algorithm with edge-oriented low-complex interpolation (LCI) based methods. The proposed algorithm is composed of the improved 4-field motion detection and three de-interlacing modes, which are the inter-field average, the LCI with the expanded edge detection, and the 3-dimension (3-D) median LCI method. First, the proposed improved...
The image reconstruction using linear bivariate splines and Delaunay triangulation is addressed in this paper. A novel significant sample point selection is used to get the most significant samples for triangulation. Image reconstruction is done based on the approximation of image regarded as a function, by a linear spline over adapted Delaunay triangulation. The proposed method is compared with some...
In this paper, we propose a framework of multi-genre movie recommender system based on neuro-fuzzy decision tree (NFDT) methodology. The system is capable of recommending list of movies in descending order of preference in response to user queries and profiles. The system also takes care of attempt to vote stuffing using novel application of fuzzy c-means clustering algorithm. Typical user query and...
In recent years many authors largely given attention to the effect of active loading index for low voltage distribution system. But this paper presents a novel approach for determining the reactive loading index of a low voltage distribution system at the proximity of voltage collapse point. The proposed procedure of maximum permissible load bus voltage of a power system within reactive loading index...
Many of the electrical systems throughout the world are experiencing problems with aging insulation. When an insulation system fails, the results are usually catastrophic. Insulation failure can cause sustained interruption which can cause substantial financial loses due to lost production and damage to expensive equipment. These losses can amount to thousands of ringgit (RM) per hour. With the ability...
Procedures and rules alone do not provide electrical safety. Personnel who are exposed to electrical hazards must understand the basics and outcomes of electrical hazards and practice safe work practices in order to implement the procedures. Training and qualifying employees on these issues can be difficult and confusing. This paper will outline a process for training employees on electrical safety...
Accurate computation of harmonics is really a challenging problem in power system. Many algorithms have been proposed for harmonic estimation. In this paper a novel hybrid approach is proposed to estimate the amplitudes and phases of fundamental, third and fifth harmonics of three different types of distorted power signals in presence of white noise. A robust estimator known as H∞ filter is used for...
This paper investigates the robust delay-dependent stability problem of a class of linear uncertain system with interval time-varying delay, and proposes less conservative stability criteria for computing the maximum allowable bound of the delay range. The proposed stability criteria are based on the delay central point technique wherein the delay interval is partitioned into two sub-intervals of...
The present study proposes a new approach to identify the parameters of both continuous and discrete time Hammerstein systems in frequency domain. A harmonic probing technique is used to derive the linear and higher-order frequency response functions (called the generalized frequency response functions (GFRF)) of both discrete and continuous-time Hammerstein models. The computation of the n-th order...
At the telecom service providers' installations, the problem of poor grid electricity supply is tackled by using diesel generators. These generators, however, entail a major problem in transportation and storage of diesel with noise pollution. Decentralized distributed generation technologies based on renewable energy resources such as solar photo voltaic (SPV) or/and wind turbine generators (WTG)...
Comparator is the key module in LDPC decoder that consumes most of the power and area. In this paper, a new comparator based on pass transistors and dynamic logic is proposed to decrease the power and the area. The comparator is implemented with full custom design at SMIC 0.18 1P6M technology. The simulation result of layout shows that the power drops by 11.4% and the area is reduced by 30% compared...
As one of the effective way to overcome the digital divide issue in the lightly populated area, the BWA (Broadband Wireless Access) system is expected and field trials have been conducted extensively in Japan. This paper introduces the results of BWA field experiments conducted in a typical intermediate and mountainous area in Japan. In the BWA network, WiMAX units are used as relay stations and R-LAN...
This paper presents the soft connection between two micro-hydro units forming a mini-grid system. It describes the operation and the design of the induction generator controller (IGC), used for the power balancing at varying consumers load as required for standalone micro-hydro generators and the synchronizer unit, used for the mini-grid interconnection. Three phase induction motors are used as single...
Power converter is the key element of the photovoltaic generation system. In order to improve the energy conversion efficiency and achieve an economic solution, hybrid cascade inverter (HCI) is employed and implemented to realize DC-AC conversion in this paper. HCI has a similar topology with conventional H-bridge cascade inverter, while the voltages of its DC buses are in a geometric sequence. In...
A novel method of watermarking in image spatial domains is proposed in this paper. The level transformation previously proposed for embedding watermark bits into each pixel of a source image is used adaptively with estimating the resulting subjective image quality. Thus, a desired subjective quality can be achieved on the watermarked image. First, the measurements of image quality by subjective evaluations...
In this paper we propose a systematic approach to mine quantitative association rules-association rules which contain quantitative attributes-using commercial mining tools. To achieve this goal, we first propose an overall working framework that consists of two steps: (1) a pre-processing step which converts quantitative attributes into binary attributes and (2) a post-processing step which reconverts...
The resistivity of a quasi-one-dimensional structure fabricated without masks by 20-keV Ga+ focused ion beam (FIB) on crystalline Si substrates was investigated for the first time, along with an analysis of properties of implanted p+ layers. The junction depth of the 7?? off-axis implanted layer after annealing, which was measured by stain method, is 410 nm. The distribution profile was investigated...
Three recently proposed Active RC transimpedance topologies using single operational amplifier have been studied in detail for obtaining optimum design choices of component values. The gain sensitivity product (GSP) extensively studied in literature for the performance evaluation of active RC filters has been employed in this study to facilitate optimization of the active and passive network sensitivities...
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