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Afișează articolele 1661-1670 of 1945
Pedagogical Knowledge Model Based on Conceptual Graphs and Ontology
("Dunarea de Jos" University of Galati, 2005)
Intelligent educational systems are knowledge-based systems (KBS) they can be developed by a generic knowledge-based system development methodology. In this paper, we present an ontology-based approach for formalizing ...
Relative Aggregation Operator in Database Fuzzy Querying
("Dunarea de Jos" University of Galati, 2005)
Fuzzy selection criteria querying relational databases include vague terms; they usually refer linguistic values form the attribute linguistic domains, defined as fuzzy sets. Generally, when a vague query is processed, the ...
Descriptive Mining for the QSAR Problem
("Dunarea de Jos" University of Galati, 2005)
There are several approaches in trying to solve the Quantitative Structure-Activity (QSAR) problem. These approaches are based either on statistical methods or on predictive data mining using neural networks. Among the ...
Uncertainty Management Using Bayesian Networks in Student Knowledge Diagnosis
("Dunarea de Jos" University of Galati, 2005)
In intelligent tutoring systems, student or user modeling implies dealing with imperfect and uncertain knowledge. One of the artificial intelligence techniques used for uncertainty management is that of Bayesian networks. ...
Fast Acting Robust Controller for Pitch Control System
("Dunarea de Jos' University of Galati, 2008)
In this paper a classical feedback controller has been designed to furnish
fast acting characteristics in the face of parametric perturbation using two
parameters, Generalized Time Constant and Characteristic Ratios. The ...
An Efficient DC-DC Converter with Bidirectional Power Flow
("Dunarea de Jos" University of Galati, 2008)
This paper introduces a Bi-directional DC-DC converter with adaptive fuzzy
logic controller. Bidirectional power flow is obtained by same power components and
provides a simple, efficient, and galvanically isolated ...
The Appoach for Optimization of Transmission Over Power Links Using the Thyristor-Controlled Series Compensation
(The Annals of "Dunarea de Jos" University of Galati, 2008)
The energy transportation networks can be improved by multiplying or
creating new lines. This is not always the case for various reasons. The series capacities
controlled by SCRs (Silicon Controlled Rectifiers) represent ...
Optimal Convex Controller and Model Reduction for a Dynamic System
("Dunarea de Jos" University of Galati, 2008)
This paper presents analysis and design of a family of controllers based on
numerical convex optimization for an aircraft pitch control system. A design method is
proposed here to solve control system design problems in ...
Proton Exchange Membrane Fuel Cell Modelling Using Moving Least Squares Technique
("Dunarea de Jos", 2009)
Proton exchange membrane fuel cell, with low polluting emissions, is a great
alternative to replace the traditional electrical power sources for automotive applications
or for small stationary consumers. This paper ...
Spatio-Temporal Dynamics in Celular Neural Networks
("Dunarea de Jos" University of Galaţi, 2009)
Analog Parallel Architectures like Cellular Neural Networks (CNN’s) have
been thoroughly studied not only for their potential in high-speed image processing
applications but also for their rich and exciting spatio-temporal ...