Physical Sciences and Mathematics Commons^™

Melanoma And Seborrheic Keratosis Differentiation Using Texture Features, Srinivas V. Deshabhoina, Scott E. Umbaugh, William V. Stoecker, Randy Hays Moss, Subhashini K. Srinivasan

Chemistry Faculty Research & Creative Works

Purpose: To explore texture features in two-dimensional images to differentiate seborrheic keratosis from melanoma.

Methods: A systematic approach to consistent classification of skin tumors is described. Texture features, based on the second-order histogram, were used to identify the features or a combination of features that could consistently differentiate a malignant skin tumor (melanoma) from a benign one (seborrheic keratosis). Two hundred and seventy-one skin tumor images were separated into training and test sets for accuracy and consistency. Automatic induction was applied to generate classification rules. Data analysis and modeling tools were used to gain further insight into the feature space. …

Properties Of A Mixed-Valent Iron Compound With The Kagomé Lattice, Chintamani Nagesa Ramachandra Rao, Geo L. Paul, Amitava Choudhury, Echur Varadadesikan Sampathkumaran, Arup Kumar R. Raychaudhuri, Suryanarayanasastry Ramasesha, Indranil Rudra

Chemistry Faculty Research & Creative Works

An organically templated iron sulfate of the formula [HN(CH₂)₆NH][Fe^III Fe₂ ^IIF₆(SO₄)₂] ·[H₃O] possessing the kagomé lattice has been prepared and characterized by single-crystal crystallography and other techniques. This mixed-valent iron compound shows complex magnetic properties including spin-glass behavior and magnetic hysteresis. The low-temperature specific heat data show deviation from the T² behavior found in two-dimensional frustrated systems. Simple calculations have been carried out to understand the properties of this kagomé compound.