Network coordinate systems, such as GNP and Vivaldi, provide virtual positions for networked hosts, which enable the hosts to connect to nearby peers, find the closest server, or organize themselves in a topologically-aware manner. Current network coordinate systems, however, only use latency to compute the positions, leaving out an important network metric—namely bandwidth. In this paper, we p...

0. Introduction There is a growing body of evidence that problems associated with iterated maps can yield interesting insights in number theory and algebra. There are the papers of Narkiewicz [19-22], Lewis [14], Liardet [15], and more recently, Silverman [27], dealing with the diophantine aspects of iterated maps, as well as the papers of Odoni [24,25], Stoll [30], Vivaldi and Hatjispyros [34]...

Stefania Galdiero, Annarita Falanga, Mariateresa Vitiello , Luca Raiola**, Roberto Fattorusso**, Helena Browne, Carlo Pedone, Carla Isernia**, and Massimiliano Galdiero 1 From the Department of Experimental Medicine-II, University of Naples, Via De Crecchio 7, 80138, Napoli, Italy, Department of Biological Sciences, Division of Biostructures and Centro Interuniversitario di Ricerca sui Peptidi ...

A compact Vivaldi antenna array printed on thick substrate and fed by a Substrate Integrated Waveguides (SIW) structure has been developed. The antenna array utilizes a compact SIW binary divider to significantly minimize the feed structure insertion losses. The low-loss SIW binary divider has a common novel Grounded Coplanar Waveguide (GCPW) feed to provide a wideband transition to the SIW and...

In this paper, the radiation characteristics of conventional Vivaldi antenna are improved by proposing a novel design antenna. This proposed is excited through three slots using L-probe microstrip feeder. The can provide higher gain and wider bandwidth compared to that same size. CST MWS software used simulate measured simulated S-parameters were so feasibility was validated. show impedance fro...