Results 31 to 40 of about 72,779 (234)

Two-Way Optical Frequency Comparisons Over 100km Telecommunication Network Fibers [PDF]

open access: yes, 2014
By using two-way frequency transfer, we demonstrate ultra-high resolution comparison of optical frequencies over a telecommunication fiber link of 100 km operating simultaneously digital data transfer.
Amy-Klein, Anne   +5 more
core   +3 more sources

Numerical and Experimental Modeling of Compressed Air-to-Air Heat Exchanger [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Compact heat exchangers serve a variety of applications. In communication systems, air-to-air heat exchangers are frequently utilized for the efficient cooling of equipment. Given the high expense associated with this system, effective cooling is crucial.
Amir Ramtinpoua   +4 more
doaj   +1 more source

High definition H.264/AVC subjective video database for evaluating the influence of slice losses on quality perception [PDF]

open access: yes, 2013
Prior to the construction or validation of objective video quality metrics, ground-truth data must be collected by means of a subjective video database.
De Turck, Filip   +4 more
core   +2 more sources

Fuzzy based load and energy aware multipath routing for mobile ad hoc networks [PDF]

open access: yes, 2015
Routing is a challenging task in Mobile Ad hoc Networks (MANET) due to their dynamic topology and lack of central administration. As a consequence of un-predictable topology changes of such networks, routing protocols employed need to accurately capture ...
Ali, M.   +3 more
core   +3 more sources

Flying Ad Hoc Networks: A New Domain for Network Communications

open access: yesSensors, 2018
The advent of flying ad hoc networks (FANETs) has opened an opportunity to create new added-value services. Even though it is clear that these networks share common features with its predecessors, e.g., with mobile ad hoc networks and with vehicular ad ...
Antonio Guillen-Perez   +1 more
doaj   +1 more source

Fibre-optic delivery of time and frequency to VLBI station [PDF]

open access: yes, 2017
The quality of Very Long Baseline Interferometry (VLBI) radio observations predominantly relies on precise and ultra-stable time and frequency (T&F) standards, usually hydrogen masers (HM), maintained locally at each VLBI station.
Ablewski, P.   +20 more
core   +1 more source

Accounting for Energy Cost When Designing Energy-Efficient Wireless Access Networks

open access: yesEnergies, 2018
Because of the increase of the data traffic demand, wireless access networks, through which users access telecommunication services, have expanded, in terms of size and of capability and, consequently, in terms of power consumption.
Greta Vallero   +3 more
doaj   +1 more source

High-resolution optical frequency dissemination on a telecommunication network with data traffic

open access: yes, 2009
We transferred the frequency of an ultra-stable laser over a 108 km urban fiber link comprising 22 km of optical communications network fiber simultaneously carrying Internet data traffic.
Anne Amy-Klein   +17 more
core   +2 more sources

Power consumption evaluation of circuit-switched versus packet-switched optical backbone networks [PDF]

open access: yes, 2013
While telecommunication networks have historically been dominated by a circuit-switched paradigm, the last decades have seen a clear trend towards packet-switched networks. In this paper we evaluate how both paradigms perform in optical backbone networks
Colle, Didier   +6 more
core   +1 more source

Infrastructure and Growth: Empirical Evidence [PDF]

open access: yes, 2009
Investment in network infrastructure can boost long-term economic growth in OECD countries. Moreover, infrastructure investment can have a positive effect on growth that goes beyond the effect of the capital stock because of economies of scale, the ...
Egert, Balazs   +2 more
core   +2 more sources

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