2014 The relation between mi, the average number of sides in cells adjacent to i-sided cells, and i, was investigated in planar networks of two types, generated by random, Poisson distributed, straight lines. When the lines are continuous, a 4-regular network results. If the lines are interrupted to form T-junctions, a 3-regular network is obtained. In the first case, two types of cell adjacenc...

This paper presents the impact of traffic shaping on enhancing the interactive video quality over ATM networks. The effects of the leaky bucket traffic shaper on the video quality is studied under different token buffer rates and token buffer sizes, and the tradeoffs involved are discussed. An enhanced traffic shaper using the early drop mechanism is then introduced. Simulation results show tha...

By means of the Cayley Trick the problem of enumerating all regular ne mixed subdivisions is reduced to enumerating all regular triangulations. The set of all regular triangulations is well-understood thanks to the bijection with the vertices of the secondary polytope. However, since we are only interested in the conngurations of mixed cells in a mixed subdivision, we want to avoid dealing with...

We show that every definable subset of an o-minimal structure expanding an arbitrary real closed field can be decomposed into finitely many definable cells of certain regularity i.e. up to a given order, the derivatives of the functions, defining the cells, have controllable behaviour at the boundary of their domain. In [7] there is a proof of a subanalytic version of Whitney’s extension theore...

Although the etiology of varicose veins remains unknown, recent studies have focused on endothelial cell integrity and function because the endothelium regulates vessel tone and synthesizes many pro- and anti-inflammatory factors. The aim of this study was to investigate the evidence involving the endothelium in the development of varicose vein disease. In addition, tissue remodeling was invest...

indeterminate cell histiocytosis is a very rare disorder of histiocytes proliferation. it has both langerhans and non-langerhans cell histiocytosis immunophenotypic features. we described a 45-year-old man with a 2 years history of multiple yellow-brown papules and a few red nodules on his trunk and extremities. no internal involvement was detected first and after 8 months. as his lesions were ...

BACKGROUND Most studies on blood donors are centered on the selective evaluation of red blood cell parameters with little or no regard to white blood cells and platelets. METHODS One hundred and twelve male blood donors comprising 43 first-time and 69 regular blood donors, drawn from a tertiary health facility in the Niger Delta of Nigeria, participated in the study. Their hematological param...

Background: Iron deficiency and its related anemia, which is the world’s most widespread nutritional deficiency, can be one of the possible consequences of regular blood donation. This research was carried out to compare iron stores in regular blood donors and first-time blood donors in Tehran Regional Blood Transfusion Center. Materials and Methods: This study was carried out on 2,149 male bl...