Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics: Recent submissions
Afișează articolele 81-100 of 230
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Classification Process in a Text Document Recommender System
("Dunarea de Jos" University of Galati, 2005)This paper presents the classification process in a recommender system used for textual documents taken especially from web. The system uses in the classification process a combination of content filters, event filters and ... -
A Survey Text Clustering Techniques Used for Web Mining
("Dunarea de Jos" of Galati, 2005)This paper contains an overview of basic formulations and approaches to clustering. Then it presents two important clustering paradigms: a bottom-up agglomerative technique, which collects similar documents into larger and ... -
Fuzzy Queries in Romanian Language. An Intelligent Interface
("Dunarea de Jos" University of Galati, 2005)The most accessible interfaces querying databases must be so intelligent, able to understand natural language expressions and including vague terms in selection criteria. The paper proposes a general architecture for a ... -
A Novel Feature Extraction Method for Isolated Word Recognition Based on Nested Temporal Averaging
("Dunarea de Jos" University of Galati, 2006)A novel preprocessing method is proposed. It has a reduced complexity and therefore is aimed to be used in low power, VLSI implemented, speech recognizers. Our algorithm extracts a feature vector made from up to 3 feature ... -
Optimal Coding for Qualitative Sources on Noiseless Channels
("Dunarea de Jos" University of Galati, 2006)In this paper we perform the encoding for sources which are only qualitatively characterized, that is, each message the source delivers possesses a certain quality, expressed as cost, importance or utility. The proposed ... -
Minimizing the Error Tracking of Mobile Terminals by Kalman Filtering
(2006)A method to track mobile terminals in a cellular communication network is presented. It uses the received field strength from the surrounding base stations. A subsequent Kalman filtering is used to minimize the tracking error. -
Fuzzy Queries in Romanian Language. An Intelligent Interface
(The Annals of "Dunarea de Jos" University of Galati, 2005)The most accessible interfaces querying databases must be so intelligent, able to understand natural language expressions and including vague terms in selection criteria. The paper proposes a general architecture for a ... -
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 ... -
On the Applicability of State-of-the-Art Fault Diagnosis Methodologies to Simple and Complex Systems
("Dunarea de Jos" University of Galati, 2010)This paper performs an analysis on the applicability of state-of-the-art fault diagnosis methodologies to both simple and complex systems. Here, a complex system represents a system whose global behavior, which emerges ... -
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. ... -
Active Power Compensator of the Current Harmonics Based on the Instantaneous Power Theory
("Dunarea de Jos" University of Galati, 2005)The quality of the electrical current becomes a major concern. The proliferation of the power electronic converters, which are used extensively to control electrical apparatus in industrial and commercial applications (dc ... -
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 ... -
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 ... -
Development of a Simulink Toolbox for Friction Control Design and Compensation
("Dunarea de Jos" University of Galati, 2005)This paper focuses on the development of a MATLAB/Simulink® library for servo-systems with friction as a part of a new simulation platform dedicated to model, analysis and control design of friction. It is well known that ... -
Multilevel Inverter Based Statcom for Power Quality Enhancememt in Multi bus System
("Dunarea de Jos" University of Galati, 2010)This paper deals with simulation of STATCOM in multi bus system for power quality enhancement. The unique structure of the multi level voltage source inverter (VSI) permits it to attain high voltages with low harmonic ... -
A New Numeral Calculus Solver-Numerical Engineering Software
("Dunarea de Jos" University of Galati, 2010)The project presented in this paper, entitled Numerical Engineering Software is an integrated solution which contains a various range of numerical methods for the solving of diverse calculations and mathematical ... -
Optimal Control for Electric Vehicle Stabilization
("Dunarea de Jos" University of Galati, 2010)This main objective of the paper is to stabilize an electric vehicle in optimal manner to a step lane change maneuver. To define the mathematical model of the vehicle, the rigid body moving on a plane is taken into ... -
Computer similation of Phase Shifted series Resonant DC to DC Converter
("Dunarea de Jos" University of Galati, 2010)This paper deals with digital simulation of phase shifted series resonant DC to DC converter using Matlab Simulink. The Simulink models for open loop and closed loop systems are developed and they are used for simulation ... -
Simulation Results of Single Stage AC-AC Converter for Induction Heating
("Dunarea de Jos" University of Galati, 2010)This paper presents simulation of single stage Induction heating system with series Load Resonance. Low frequency AC is converted in to High Frequency Ac using newly developed ZVS-PWM high frequency inverter. This High ... -
A Novel Analysis of Class e Inverter Based Induction Heating System
("Dunarea de Jos" University of Galati, 2010)This paper deals with the simulation and implementation of class E inverter based induction heater system. Class E inverter is analyzed; simulated and implemented. Utility frequency AC Power is converted into high frequency ...
