1. Outlier Detection in Wireless Sensor Networks Using Distributed Principal Component Analysis

Mohammad Ahmadi Livani; mahdi Abadi; Meysam Alikhany; Meisam Yadollahzadeh Tabari

Volume 1, Issue 1 , Winter 2013, Pages 1-11

  Detecting anomalies is an important challenge for intrusion detection and fault diagnosis in wireless sensor networks (WSNs). To address the problem of outlier detection in wireless sensor networks, in this paper we present a PCA-based centralized approach and a DPCA-based distributed energy-efficient ...  Read More

2. An Enhanced Median Filter for Removing Noise from MR Images

S. Arastehfar; Ali A. Pouyan; A. Jalalian

Volume 1, Issue 1 , Winter 2013, Pages 13-17

  In this paper, a novel decision based median (DBM) filter for enhancing MR images has been proposed. The method is based on eliminating impulse noise from MR images. A median-based method to remove impulse noise from digital MR images has been developed. Each pixel is leveled from black to white like ...  Read More

3. An Improved Algorithm for Network Reliability Evaluation

Mohammad Ghasemzadeh

Volume 1, Issue 1 , Winter 2013, Pages 19-25

  Binary Decision Diagram (BDD) is a data structure proved to be compact in representation and efficient in manipulation of Boolean formulas. Using Binary decision diagram in network reliability analysis has already been investigated by some researchers. In this paper we show how an exact algorithm for ...  Read More

4. Image retrieval using the combination of text-based and content-based algorithms

Hanieh Mohamadi; Asadollah Shahbahrami; Javad Akbari

Volume 1, Issue 1 , Winter 2013, Pages 27-34

  Image retrieval is an important research field which has received great attention in the last decades. In this paper, we present an approach for the image retrieval based on the combination of text-based and content-based features. For text-based features, keywords and for content-based features, color ...  Read More

5. Expert Discovery: A web mining approach

Muhammad Naeem; Muhammad Bilal Khan; Muhammad Tanvir Afzal

Volume 1, Issue 1 , Winter 2013, Pages 35-47

  Expert discovery is a quest in search of finding an answer to a question: “Who is the best expert of a specific subject in a particular domain within peculiar array of parameters?” Expert with domain knowledge in any field is crucial for consulting in industry, academia and scientific community. ...  Read More

6. Protection Scheme of Power Transformer Based on Time–Frequency Analysis and KSIR-SSVM

mehdi hajian; Asghar Akbari Foroud

Volume 1, Issue 1 , Winter 2013, Pages 49-61

  The aim of this paper is to extend a hybrid protection plan for Power Transformer (PT) based on MRA-KSIR-SSVM. This paper offers a new scheme for protection of power transformers to distinguish internal faults from inrush currents. Some significant characteristics of differential currents in the real ...  Read More