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Institution

University of Patras

EducationPátrai, Greece
About: University of Patras is a education organization based out in Pátrai, Greece. It is known for research contribution in the topics: Population & Catalysis. The organization has 13372 authors who have published 31263 publications receiving 677159 citations. The organization is also known as: Panepistímio Patrón.


Papers
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Journal ArticleDOI
TL;DR: An efficient approach for the evaluation of the Nakagami-m (1960) multivariate probability density function (PDF) and cumulative distribution function (CDF) with arbitrary correlation is presented and useful closed formulas are derived.
Abstract: An efficient approach for the evaluation of the Nakagami-m (1960) multivariate probability density function (PDF) and cumulative distribution function (CDF) with arbitrary correlation is presented. Approximating the correlation matrix with a Green's matrix, useful closed formulas for the joint Nakagami-m PDF and CDF, are derived. The proposed approach is a significant theoretical tool that can be efficiently used in the performance analysis of wireless communications systems operating over correlative Nakagami-m fading channels.

132 citations

Journal ArticleDOI
TL;DR: In this article, the phosphoric acid doping levels of homogeneous membranes from blends of polybenzimidazole (PBI) with sulfonated polysulfones (SPSF) were established and found to be dependent on the PBI/sPSF ratio, on the presence of non-bonded PBI and on the sulfonation degree of SPSF as well as on the impregnation temperature.

131 citations

Journal ArticleDOI
TL;DR: This research work proposes and focuses on an advanced method able to identify fetuses compromised and suspicious of developing metabolic acidosis, constituting a promising new automatic methodology for the prediction of metabolicacidosis.
Abstract: Cardiotocography is the main method used for fetal assessment in everyday clinical practice for the last 30 years. Many attempts have been made to increase the effectiveness of the evaluation of cardiotocographic recordings and minimize the variations of their interpretation utilizing technological advances. This research work proposes and focuses on an advanced method able to identify fetuses compromised and suspicious of developing metabolic acidosis. The core of the proposed method is the introduction of a support vector machine to "foresee" undesirable and risky situations for the fetus, based on features extracted from the fetal heart rate signal at the time and frequency domains along with some morphological features. This method has been tested successfully on a data set of intrapartum recordings, achieving better and balanced overall performance compared to other classification methods, constituting,therefore, a promising new automatic methodology for the prediction of metabolicacidosis

131 citations

Journal ArticleDOI
TL;DR: Ni/La2O3 catalyst exhibits high activity and good long term stability for steam reforming of ethanol to hydrogen production and is a good candidate for ethanol reforming processors for fuel cell applications.

131 citations

01 Jan 2002
TL;DR: The signaling extension needed for the implementation of the proposed load balancing procedure is described, which acts in two separate levels, based not only on RSSI measurements but also on the number of WS already associated to the AP and other link quality measurements.
Abstract: We study the problem of load balancing in 802.11-based wireless networks, operating in infrastructure mode. In a large wireless network with multiple collocated Access Points (AP), a load balancing policy is necessary for the distribution of the wireless stations (WS) to the AP's, so as the network performance to be maximized. Already proposed algorithms, which are based only on the received signal strength indicator (RSSI), may cause all the WS to be associated to a single or to a very few number of AP, and result in an overall network performance degradation. In this paper, we propose a load balancing procedure, which acts in two separate levels. First, the AP's are either distributed across the channels (if the number of AP is small) or located in the same channel that is specified by taking into account the channel-location and the received RSSI of the neighbor AP. Second, the WS are distributed across all the available AP based not only on RSSI measurements but also on the number of WS already associated to the AP and other link quality measurements. Besides, in this paper we describe the signaling extension needed for the implementation of the proposed load balancing procedure.

131 citations


Authors

Showing all 13529 results

NameH-indexPapersCitations
Thomas J. Meyer120107868519
Thoralf M. Sundt11275555708
Chihaya Adachi11290861403
Eleftherios P. Diamandis110106452654
Roland Siegwart105115451473
T. Geralis9980852221
Spyros N. Pandis9737751660
Michael Tsapatsis7737520051
George K. Karagiannidis7665324066
Eleftherios Mylonakis7544821413
Matthias Mörgelin7533218711
Constantinos C. Stoumpos7519427991
Raymond Alexanian7521121923
Mark J. Ablowitz7437427715
John Lygeros7366721508
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202395
2022250
20211,738
20201,672
20191,469
20181,443