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In image processing, image segmentation is a fundamental task used for image description and classification. In this paper we have proposed a region based color image segmentation. First, initial seeds are selected using histogram analysis. Regions are grown from these initial seeds based on similarity condition. In the next phase, the threshold for region(More)
OBJECTIVE Chipping and/or delamination represent a clinical failure of porcelain fused to zirconia (PFZ) prostheses. Causes and solutions have not been completely clarified. The present study was aimed at evaluating the effects of number of firings on the flexural strength of PFZ specimen. METHODS Forty-five zirconia specimens in shape of bars were cut,(More)
Concentrically braced frames and eccentrically braced frames are efficient seismic resistant systems but they are generally prone to develop storey collapse mechanisms. As underlined in some previous papers with regard to eccentrically braced frames, this tendency depends on the overstrength factors and damage distribution capacity factors resulting from(More)
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