International Journal of Engineering & Applied Sciences

Number 9, 2017

1-13
Comparative Study on Facial Expression Recognition using Gabor and Dual-Tree Complex Wavelet Transforms

Authors: Alaa Eleyan

Abstract

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Number of views: 506

Moving from manually interaction with machines to automated systems, stressed on the importance of facial expression recognition for human computer interaction (HCI). In this article, an investigation and comparative study about the use of complex wavelet transforms for Facial Expression Recognition (FER) problem was conducted. Two complex wavelets were used as feature extractors; Gabor wavelets transform (GWT) and dual-tree complex wavelets transform (DT-CWT). Extracted feature vectors were fed to principal component analysis (PCA) or local binary patterns (LBP). Extensive experiments were carried out using three different databases, namely; JAFFE, CK and MUFE databases. For evaluation of the performance of the system, k-nearest neighbor (kNN), neural networks (NN) and support vector machines (SVM) classifiers were implemented. The obtained results show that the complex wavelet transform together with sophisticated classifiers can serve as a powerful tool for facial expression recognition problem.

14-31
Development of Pavement Maintenance Management System (PMMS) of Urban Road Network Using HDM-4 Model

Authors: Tanuj Chopra, Manoranjan Parida, Naveen Kwatra , Jyoti Mandhani

Abstract

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Number of views: 1111

In recent years, intelligent transportation systems are under a continuous development which is the direct integration of the technology and traffic engineering aspects. These systems are extensively used in order to prevent driving at high speeds and violations of the traffic rules at different road sections, signalized and unsignalized intersections. These systems have capabilities of detecting the instantaneous and average speeds of vehicles along a roadway section, and red light violations. By the help of these sophisticated systems, road and security authorities can successfully carry out criminal sanctions against non-compliant drivers combined with plate reader cameras. In Turkey, these systems are called Traffic Electronic Control System (TECS) and they are considered under different categories such as intelligent intersection systems, vehicle counting systems, safety strip violation detection systems, speed violation detection systems, speed corridors, red light violation detection systems and parking violation detection systems. Within the scope of this study, the performance of a red light violation system installed at the 4-leg signalized intersection at Antalya-Burdur highway entrance of Celtikci district belonging to the TECS was investigated by implementing a new proposed methodology. According to the performance analysis of the system, it was found that system performance was appropriate. This study also demonstrated that the new measurement method accurately measures the performance of the system by examining all measurement possibilities.

42-54
Optimisation of Refrigeration System with Two-Stage and Intercooler Using Fuzzy Logic and Genetic Algorithm

Authors: Bayram Kilic

Abstract

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Number of views: 583

Two-stage compression operation prevents excessive compressor outlet pressure and temperature and this operation provides more efficient working condition in low-temperature refrigeration applications. Vapor compression refrigeration system with two-stage and intercooler is very good solution for low-temperature refrigeration applications. In this study, refrigeration system with two-stage and intercooler were optimized using fuzzy logic and genetic algorithm. The necessary thermodynamic characteristics for optimization were estimated with Fuzzy Logic and liquid phase enthalpy, vapour phase enthalpy, liquid phase entropy, vapour phase entropy values were compared with actual values. As a result, optimum working condition of system was estimated by the Genetic Algorithm as -6.0449 oC for evaporator temperature, 25.0115 oC for condenser temperature and 5.9666 for COP. Morever, irreversibility values of the refrigeration system are calculated.

55-61
Frequency and Mode Shapes of Au Nanowires Using the Continuous Beam Models

Authors: Hayri Metin Numanoglu , Kadir Mercan , Ömer Civalek

Abstract

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Number of views: 427

Free vibration analysis of Au nanowires has been investigated. Au nanowire is modeled via thin beam using the linear theory. Three-different cross-sections such as circular, rectangular and triangular are taken into consideration for ultra thin nanowires. Frequency values have been obtained for different geometric parameters and simply supported of boundary condition. This study is helpful for design of the nanowires based instruments in modern NEMS technology.