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To synthesize planar arrays, a new optimization algorithm namely Competition Over Resources (COR) is presented. This method imposes deeper nulls with the constraint of Side Lobe Level (SLL). COR is a new meta-heuristic algorithm based on competitive behavior of animal groups over food resources. The algorithm restricts Dynamic Range Ratio (DRR) in order to achieve a better control of the mutual coupling...
This paper will investigate a method of synthesizing planar arrays through the application of a new optimization algorithm based on competitive behavior of animal groups that will impose deeper nulls in the interfering direction with the constraint of a reduced Side Lobe Level (SLL). Simulation results for optimal patterns by position-only and both the element space and amplitude controlling with...
In this paper, a new automatic system has been proposed for critical conditions diagnosis of distribution insulators. In this regard, a variety of experiments have been conducted on different types of insulators under different environmental conditions. Leakage current harmonics on these experiments have been analyzed. Fast Fourier Transform (FFT) applied on leakage current waveforms and results show...
This paper proposes a method to achieve the harmonic cancellation of compact fluorescent lamps (CFL) in large number usage. As the adoption of CFLs shows no sign of slowing down, utilities are increasingly concerned with the harmonic impact of these lamps. However it is obvious that traditional incandescent lamps will be replaced with energy efficient lamps only if they stay in a reasonable price...
In the recent years, many heuristic optimization algorithms derived from the behavior of biological or physical systems in nature have been developed. In this paper, we propose a new optimization algorithm based on competitive behavior of group animals. The competition gradually results in an increase in population of wealthy group which gives a fast convergence to the optimization algorithm. In the...
Automatic analysis of human facial emotions is one of the challenging problems in intelligent systems and social signal processing. It has many applications in human-computer interactions, social robots, interactive multimedia and behavior monitoring. In this paper, our specific aim is to develop a method for facial movement recognition based on verifying movable facial elements and estimate the movements...
In the recent years, many heuristic optimization algorithms derived from the behavior of biological or physical systems in nature have been developed. In this paper, we propose a new optimization algorithm based on competitive behavior of group animals. The competition gradually results in an increase in population of wealthy group which gives a fast convergence to the optimization algorithm. In the...
In the recent years, many heuristic optimization algorithms have been developed. A majority of these heuristic algorithms have been derived from the behavior of biological or physical systems in nature. In this paper, we propose a new optimization algorithm based on competitive behavior of animal groups. In the proposed algorithm, the whole population is divided into a number of groups. In each group,...
Automatic analysis of human facial expression is one of the challenging problems in machine vision systems. The most expressive way humans display emotion is through facial expression. In this paper, we extend texture based facial expression recognition, with a method of 2D image processing implemented for extraction of features and a new neural network based decision trees. The algorithm applies...
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