Salvatore Marano

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Let f : [a, b] × R n+1 → R be a Carathéodory's function. Let {t h }, with t h ∈ [a, b], and {x h } be two real sequences. In this paper, the family of boundary value problems´x is considered. It is proved that these boundary value problems admit at least a solution for each k ≥ ν, where ν ≥ n + 1 is a suitable integer. Some particular cases, obtained by(More)
0140-3664/$ see front matter 2008 Published by doi:10.1016/j.comcom.2008.04.027 * Corresponding author. Tel.: +39 0984494706. E-mail addresses: derango@deis.unical.it (F.D. Rang Cano), calafate@disca.upv.es (C. Calafate), manzoni marano@deis.unical.it (S. Marano). Untethered nodes in mobile ad hoc networks strongly depend on the efficient use of their(More)
In this paper we have carried out an accurate overview on Voice over IP QoS evaluation techniques. We have described in a detailed way the most important measurement methods that are subdivided in subjective and objective methods. Subjective measurements (e.g. Mean Opinion Score MOS) are the benchmark for objective methods, but they are slow, time consuming(More)
In this paper, a novel strategy for handling ATM connections of different natures, traffic profile, and QoS requirements in enhanced satellite systems is proposed. The conducted research starts from early studies on resource management in integrated terrestrial-satellite environments and focuses on a combined connection admission control/traffic resource(More)
Deep space communications are an important research line in scientific community. The possibility of performing the communication between earth and other planets is an excitant challenge. The main issue of the communication between planet, called interplanetary (IPN) communication, is the intermittent visibility due to planet movement and the long(More)
The main objective of this work is the proposal of a new connection admission control (CAC) algorithm guaranteeing both a high connection multiplexing level and, in particular, a good quality of service (QoS) for real-time multimedia traffic sources mapped over the service classes of the DVB-RCS standard. In this paper, we suppose a DVB-RCS system(More)
In the past few years, there has been much research in wireless adaptive networking and resource management, in order to examine how to efficiently handle wireless communications between mobile hosts and base stations. In this paper, we focus the attention on the mobile independent predictive (MIP) service class, which provides a passive reservation policy,(More)
In sensor networks 802.15.4 WPAN, the most common technique used to calculate the distance between two nodes is the RSSI (Received Signal Strength Indicator) technique, because it has the advantage of not requiring additional hardware and synchronization on nodes. Some studies show that the RSSI index is fairly unreliable and often produces significant(More)