The 2.4 GHz frequency band is used by various devices, including WiFi, microwave ovens and Bluetooth. For WiFi devices, it is desirable to have information about occupancy of the spectrum available to select optimal channels and to predict link performance. As only few devices are capable of acquiring such information, devices may share it. However, using these information only makes sense if t...

We introduce BubbleSearch, a general approach for extending priority-based greedy heuristics. Following the framework recently developed by Borodin et al., we consider priority algorithms, which sequentially assign values to elements in some fixed or adaptively determined order. BubbleSearch extends priority algorithms by selectively considering additional orders near an initial good ordering. ...

"The purpose of this study is to track and contrast the patterns of local concentration and deconcentration in nonmetropolitan America between 1950 and 1996. We consider the growth of places by initial size as well as the growth of population living in the countryside or in unincorporated hamlets.... To determine how widespread and consistent the trends are, we compare patterns of growth by nea...

p. 3 Tesselations by Connection in Orders p. 15 A Concise Characterization of 3D Simple Points p. 27 Digital n-Pseudomanifold and n-Weakmanifold in a Binary (n+1)-Digital Image p. 37 Digital Jordan Curve Theorems p. 46 A New Means for Investigating 3-Manifolds p. 57 Nearness in Digital Images and Proximity Spaces p. 69 Morphological Operators with Discrete Line Segments p. 78 Hausdorff Discreti...

Tritium activity concentration in Danube river water in Serbia has been determinate using a liquid scintillation counter Quantulus 1220. During December 2010, water samples were taken along the entire course of Danube through Serbia, from HungarianSerbian to Romanian-Serbian border. This investigation is very important because of the nearness of nuclear reactor Paks in Hungary. Sample preparati...

This report presents the Near set Evaluation And Recognition (NEAR) system. The goal of the NEAR system is to extract perceptual information from images using near set theory, which provides a framework for measuring the perceptual nearness of objects. The contributions of this report are an introduction to the NEAR system as an application of near set theory to image processing, a featurebased...

1,2 Department of Electronics and Communication Engineering, Amity University, Lucknow (India) ABSTRACT Underwater Wireless Optical Communications is an arrivingexplanation to extend the demand for broadband links in oceans and seas. In this paper we examinethe Bit Error Rate (BER)attainment of multiple-input multiple-output of Underwater Wireless Optical Communication system (MIMO-UWOC). By us...

We examine the threshold of the influence of the tunneling nanotubes (TNTs) on the cell-to-cell communication integrity. A deterministic model is introduced with the Michaelis-Menten dynamics and the intercellular exchange of substance. The influence of TNTs are considered as a functional perturbation of the main communication and treated as the matrix nearness problems. We analyze communicatio...

This paper introduces the concept of an approach merotopological space and studies its categorytheoretic properties. Various topological categories are shown to be embedded into the category whose objects are approach merotopological spaces. The order structure of the family of all approachmerotopologies on a nonempty set is discussed. Employing the theory of bunches, bunch completion of an app...

Because of its nearness to the sun as seen from the earth, Mercury has been the least investigated terrestrial planet fro m earth-based observatories. The flybys of Mariner l0 on March 29 and September 21, 1974, have produced an enormous increase in knowledge. As can be seen in Figure l, Mariner l0 has placed Mercury in a photographic status imilar to that of the moon in the early 1960's, befor...