Background: Oral lesions can affect people’s quality of life by impairment of chewing, swallowing and speech. These lesions may originate from epithelial or mesenchymal tissues. Malignant oral lesions could be life-threatening. Epidemiological data about oral lesions in our country is limited. Objective: This study was conducted to investigate the frequency of histopathologic features of oral ...

   Negative data handling has gained a remarkable importance in the literature of Data Envelopment Analysis (DEA) to address many real life problems. Various erstwhile applications, in this arena, referred relocation of the origin to a superior (RDM) or to an inferior (Translated Input Oriented BCC) neighboring point. In this paper, the conditions for Rotation Invariance of various Data Envelop...