1. Image quality enhancement in digital panoramic radiograph

Sekine Asadi Amiri; Ehsan Moudi

Volume 2, Issue 1 , Winter 2014, Pages 1-6

  One of the most common positioning errors in panoramic radiography is palatoglossal air space above the apices of the root of maxillary teeth. It causes a radiolucency obscuring the apices of maxillary teeth. In the case of this positioning error, the imaging should be repeated. This causes the patient ...  Read More

2. Data mining for decision making in engineering optimal design

Amir Mosavi

Volume 2, Issue 1 , Winter 2014, Pages 7-14

  Often in modeling the engineering optimization design problems, the value of objective function(s) is not clearly defined in terms of design variables. Instead it is obtained by some numerical analysis such as FE structural analysis, fluid mechanic analysis, and thermodynamic analysis, etc. Yet, the ...  Read More

3. Applying mean shift and motion detection approaches to hand tracking in sign language

Mohammad Mehdi Hosseini; Jalal Hassanian

Volume 2, Issue 1 , Winter 2014, Pages 15-24

  Hand gesture recognition is very important to communicate in sign language. In this paper, an effective object tracking and hand gesture recognition method is proposed. This method is combination of two well-known approaches, the mean shift and the motion detection algorithm. The mean shift algorithm ...  Read More

4. Prioritize the ordering of URL queue in Focused crawler

Deepika Koundal

Volume 2, Issue 1 , Winter 2014, Pages 25-31

  The enormous growth of the World Wide Web in recent years has made it necessary to perform resource discovery efficiently. For a crawler it is not an simple task to download the domain specific web pages. This unfocused approach often shows undesired results. Therefore, several new ideas have been proposed, ...  Read More

5. Local gradient pattern - A novel feature representation for facial expression recognition

Mohammad Shahidol Islam

Volume 2, Issue 1 , Winter 2014, Pages 33-38

  Many researchers adopt Local Binary Pattern for pattern analysis. However, the long histogram created by Local Binary Pattern is not suitable for large-scale facial database. This paper presents a simple facial pattern descriptor for facial expression recognition. Local pattern is computed based on local ...  Read More

6. Solution of Multi-Objective optimal reactive power dispatch using pareto optimality particle swarm optimization method

Syed Abbas Taher; Mojtaba Pakdel

Volume 2, Issue 1 , Winter 2014, Pages 39-52

  For multi-objective optimal reactive power dispatch (MORPD), a new approach is proposed where simultaneous minimization of the active power transmission loss, the bus voltage deviation and the voltage stability index of a power system are achieved. Optimal settings of continuous and discrete control ...  Read More

7. Classification of emotional speech using spectral pattern features

Ali Harimi; Ali Shahzadi; Alireza Ahmadyfard; Khashayar Yaghmaie

Volume 2, Issue 1 , Winter 2014, Pages 53-61

  Speech Emotion Recognition (SER) is a new and challenging research area with a wide range of applications in man-machine interactions. The aim of a SER system is to recognize human emotion by analyzing the acoustics of speech sound. In this study, we propose Spectral Pattern features (SPs) and Harmonic ...  Read More

8. A Time-Frequency approach for EEG signal segmentation

Milad Azarbad; Hamed Azami; Saeid Sanei; A Ebrahimzadeh

Volume 2, Issue 1 , Winter 2014, Pages 63-71

  The record of human brain neural activities, namely electroencephalogram (EEG), is generally known as a non-stationary and nonlinear signal. In many applications, it is useful to divide the EEGs into segments within which the signals can be considered stationary. Combination of empirical mode decomposition ...  Read More

9. Yarn tenacity modeling using artificial neural networks and development of a decision support system based on genetic algorithms

Mohaddeseh Dashti; Vali Derhami; Esfandiar Ekhtiyari

Volume 2, Issue 1 , Winter 2014, Pages 73-78

  Yarn tenacity is one of the most important properties in yarn production. This paper addresses modeling of yarn tenacity as well as optimally determining the amounts of the effective inputs to produce yarn with desired tenacity. The artificial neural network is used as a suitable structure for tenacity ...  Read More

10. Query expansion based on relevance feedback and latent semantic analysis

Marziea Rahimi; Morteza Zahedi

Volume 2, Issue 1 , Winter 2014, Pages 79-84

  Web search engines are one of the most popular tools on the Internet which are widely-used by expert and novice users. Constructing an adequate query which represents the best specification of users’ information need to the search engine is an important concern of web users. Query expansion is ...  Read More

11. Wireless sensor network design through genetic algorithm

Seyed Mojtaba Hosseinirad; S.K. Basu

Volume 2, Issue 1 , Winter 2014, Pages 85-96

  In this paper, we study WSN design, as a multi-objective optimization problem using GA technique. We study the effects of GA parameters including population size, selection and crossover method and mutation probability on the design. Choosing suitable parameters is a trade-off between different network ...  Read More