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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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Book ChapterDOI
03 Dec 2003
TL;DR: This research work proposes the utilization of the unsupervised Hebbian algorithm to nonlinear units for training FCMs and proposes the proposed learning procedure, which modifies its fuzzy causal web as causal patterns change and as experts update their causal knowledge.
Abstract: Fuzzy Cognitive Map (FCM) is a soft computing technique for modeling systems. It combines synergistically the theories of neural networks and fuzzy logic. The methodology of developing FCMs is easily adaptable but relies on human experience and knowledge, and thus FCMs exhibit weaknesses and dependence on human experts. The critical dependence on the expert’s opinion and knowledge, and the potential convergence to undesired steady states are deficiencies of FCMs. In order to overcome these deficiencies and improve the efficiency and robustness of FCM a possible solution is the utilization of learning methods. This research work proposes the utilization of the unsupervised Hebbian algorithm to nonlinear units for training FCMs. Using the proposed learning procedure, the FCM modifies its fuzzy causal web as causal patterns change and as experts update their causal knowledge.

240 citations

Journal ArticleDOI
TL;DR: The European Society for Vascular Surgery (ESVS) 2021 Clinical Practice Guidelines on the Management of Venous Thrombosis as discussed by the authors have been published for the management of venous thrombotic vessels.

240 citations

Journal ArticleDOI
TL;DR: In this article, the requirements and properties of membrane separators for lithium-ion batteries, the recent progress on the different types of separators developed, and the manufacturing methods used for their production are discussed.
Abstract: Recently, much effort has been devoted to the development of battery separators for lithium-ion batteries for high-power, high-energy applications ranging from portable electronics to large-scale energy storage for power grids. The separator plays a key role in battery construction because it functions as the physical barrier to prevent electronic contact between the two electrodes and at the same time serves as an electrolyte reservoir, facilitating the ionic conduction. The purpose of this Review is to describe the requirements and properties of membrane separators for lithium-ion batteries, the recent progress on the different types of separators developed, and the manufacturing methods used for their production. Specifically the large-scale manufacturing processes are highlighted along with the processing parameters that affect their properties. The outlook and future directions regarding the development of advanced separator technologies are also discussed.

238 citations

Journal ArticleDOI
TL;DR: A novel 0–1 integer programming formulation of the university timetabling problem is presented and it is shown that this model is solvable by existing software tools with IP solvers, even for large departments.

238 citations

Journal ArticleDOI
TL;DR: The proposed algorithm for vessel segmentation and network extraction in retinal images is compared with widely used supervised and unsupervised methods and evaluated in noisy conditions, giving higher average sensitivity rate in the same range of specificity and accuracy, and showing robustness in the presence of additive Salt&Pepper or Gaussian white noise.

238 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