Principle of Distributed Bus Protection Based on Directional Impedance Component Comparison

Self-protection for Distributed Component-Based Applications

The complexity of today’s distributed computing environments is such that the presence of bugs and security holes is statistically unavoidable. A very promising approach to this issue is to implement a self-protected system, similarly to a natural immune system which has the ability to detect the intrusion of foreign elements and react while it is still in progress. This paper describes an appr...

Modified Impedance-Based OOS Protection Based on On-Line Thévenin Equivalent Estimation

In this paper, a novel approach based on the Thévenin tracing is presented to modified conventional impedance-based out-of-step (OOS) protection. In conventional approach, the OOS detection is done by measuring positive sequence impedance. However, the measured impedance may be change due to different factors such as capacitor bank switching and reactive power compensators that it can cause the...

Digital Low-Impedance Bus Differential Protection: Principles and Approaches

Predicting Work Consciousness as an Ethical Principle based on Value-based Leadership Component

Background: work consciousness and value-based leadership are the main variables that more attended by researchers. Therefore, the present study investigates the relationship between work consciousness and value-based leadership studied in Urmia university to predict the leadership components based on values.‎ Method: This study is an applied descriptive – correlation research. The population o...

An Improved Face Recognition Technique Based on Modular Multi-directional Two-dimensional Principle Component Analysis Approach

In this paper, a new method named modular multi-directional two-dimensional principle component analysis (MD2DPCA) is proposed for face recognition. First, the original images are rotated at some predetermined angles so that we may extract features from the images in any direction. Then we divide the rotated images into smaller sub-images and apply 2DPCA approach to each of these sub-images. Fi...