In this paper, the river network is divided into sub-networks forming a hierarchy of drainage systems following the Horton order. Then, drainage systems are rearranged based on their pattern to obtain more homogeneous drainage systems which do not necessarily follow the Horton order. Such reorganization facilitates the description of the network system. Such organization can be useful for terra...

background : breast carcinoma is the most common malignant tumor and leading cause of cancer deaths in women. while fine needle aspiration cytology is highly accurate in the diagnosis of breast lesions, it possesses certain drawbacks. in those circumstances intraoperative imprint cytology assumes importance, however, imprint cytology is subjected to interpretative errors. computer image analysi...

Suppose that under the action of gravity, liquid drains through the unit d-cube via a minimal-length network of channels constrained to pass through random sites and to flow with nonnegative component in one of the canonical orthogonal basis directions of Rd, d ≥ 2. The resulting network is a version of the so-called minimal directed spanning tree. We give laws of large numbers and convergence ...

We present a feature extraction method to emphasize the interrelationship between gray and white matter and identify tissue distribution abnormalities in schizophrenia. This approach utilizes novel features called structural phase and magnitude images. The phase image indicates the relative contribution of gray and white matter, and the magnitude image reflects the overall tissue concentration....

PURPOSE To quantify the distribution and morphometric characteristics of capillary networks in the human perifovea. To determine correlations between the location of neuronal subcellular compartments and the morphometric features of regional capillary networks in the layered retina. METHODS The perifoveal region, located 2 mm nasal to the fovea, was studied in 17 human donor eyes. Novel micro...