In this a paper a quadtree based method is proposed for classifying blocks of samples in image subbands. Classi cation of blocks of subband samples according to their energy and variable bit allocation within the subsequent classes has demonstrated considerable gains in coding e ciency. The gains due to classi cation increase as smaller blocks are used; however, so do the overheads for transmit...

Hyperplastic aberrations are differently classified and the term of precancerosis diversely interpreted; therefore, it is extremely difficult to evaluate the effectiveness of particular therapeutic methods. A standardized classication would enable an objective assessment of the treatment for precanceroses. Our own conception of the histologic patterns in precanceroses is presented. In the perio...

Introduction: Content Based Image Retrieval (CBIR) is a method of image searching and retrieval in a  database. In medical applications, CBIR is a tool used by physicians to compare the previous and current  medical images associated with patients pathological conditions. As the volume of pictorial information  stored in medical image databases is in progress, efficient image indexing and retri...

In this paper we investigate the stability of the HIV-1 infection dynamical problem. An approach using the matrix Lambert W function for the analytical solution to system of delay differential equations is applied to this problem and compared with the result obtained using a bifurcation analysis. Mathematical Subject Classication (2010): 92B05, 92B99, 34D20, 34C23.

Computer-assisted methods have become very important in analyzing biosequence data. However, most of the current methods are limited to nding motifs only. Genes can be regulated in many ways, including combinations of regulatory elements. This research is aimed at combinatorial motif analysis and hypothesis generation. A genome-wide gene expression analysis demonstrated the value of the studies...