Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics: Recent submissions
Afișează articolele 201-220 of 230
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Analysis of a Neuro-Fuzzy Approach of Air Pollution: Building a Case Study
('Dunarea de Jos" University of Galati, 2001)This work illustrates the necessity of an Artificial Intelligence (AI)-based approach of air quality in urban and industrial areas. Some related results of Artificial Neural Networks (ANNs) and Fuzzy Logic (FL) for ... -
Modeling of the Biodegradation in Multiphase Stirred Tank Reactor
("Dunarea de Jos" University of Galati, 2001)The surface response methodology is used to verify predicted models and to adapt them on particular conditions of growth. The effect of solvent addition during the linear cell growth on the enhancement of biodegradation ... -
Software System for Generating, Identification and Simulation of the Biotechnological Processes Models
("Dunarea de Jos" University of Galati, 2001)The paper deals with the development of a software system (BIOCALC) for the modelling, identification and simulation of the biotechnological processes. BIOCALC is based on the algorithm developed by George Bastin and ... -
Supervisory Control Technique for an Assembly Workstation as a Dynamic Discrete Event System
("Dunarea de Jos" University of Galati, 2001)This paper proposes a control problem statement in the framework of supervisory control technique for the assembly workstations. A desired behaviour of an assembly workstation is analysed. The behaviour of such a workstation ... -
On Activity Modelling in Process Modelling
("Dunarea de Jos" University of Galati, 2001)The paper is looking to the dynamic feature of the meta-models of the process modelling process, the time. Some principles are considered and discussed as main dimensions of any modelling activity: the compatibility of ... -
Comments on Clock Models in Hybrid Automata and Hybrid Control Systems
("Dunarea de Jos" University of Galati, 2001)Hybrid systems have received a lot of attention in the past decade and a number of different models have been proposed in order to establish mathematical framework that is able to handle both continuous and discrete ... -
On Exponential and Asymptotic Estimation of State Variables in Bioprocesses
("Dunarea de Jos" University of Galati, 2001)The paper presents on-line estimation strategies for bioprocesses, which are characterized by strongly nonlinear dynamics. A general form for the state observers is analysed and the exponential observability of bioprocesses ... -
Robust Control Methods for a Recycle Bioreactor
("Dunarea de Jos" University of Galati, 2001)The paper presents a robust control design strategy for bioprocesses, which are characterized by strongly nonlinear dynamics. More precisely, we present the H2 methodology in order to compute the controller for a recycle ... -
Modelling Non-Stationary Wind Speed for Renewablwe Energy Systems Control
("Dunarea de Jos" University of Galati, 2001)This paper deals with the modelling of the wind speed, treated as a nonstationary process. In the proposed modelling methods, the wind speed has two components: a long and medium term-component, described by an available ... -
Limitations of a Static VAr Compensator (SVC) with Switched Capacitor Operating as an Active Filter
("Dunarea de Jos" University of Galati, 2001)The goal of this paper is to analyze the limitations of a static VAr compensator (SVC) with switched capacitor, when this operate as an active filter. The limitations considered and studied by simulation are in the zone ... -
Algorithms for Wireless Channel Equalization with Joint Coding and Soft Decizion Feedback
("Dunarea de Jos" University of Galati, 2001)The paper proposes a new approach based on Joint Entropy Maximisation (JEM) using a soft decision feedback equalizer (S-DE) to suppress error propagation. In its first section, the paper presents the principle of the ... -
On a Takagi-Sugeno Fuzzy Controller with Non-Homogenous Dynamics
("Dunarea de Jos" University of Galati, 2001)The paper proposes a Takagi-Sugeno fuzzy controller with non-homogenous controller dynamics with respect to the two input channels, that means, in the linear case, different transfer functions with respect to the reference ... -
Stability criteria for cellular neural networks
("Dunarea de Jos" University of Galati, 2001)A cellular neural network is an artificial neural network which features a multidimensional array of neurons and local interconnections among the cells. Neural networks are systems with several equilibrium states. It is ... -
Neural Network Schemes in Cartesian Space Control of Robot Manipulators
("Dunarea de Jos" University of Galati, 2001)In this paper we are studying the Cartesian space robot manipulator control problem by using Neural Networks (NN). Although NN compensation for model uncertainties has been traditionally carried out by modifying the joint ... -
The Textual Idea and its Relationship to discourse structure
("Dunarea de Jos" University of Galati, 2000)The textual idea could be characterized through a series of either detailing the current form of idea or continuing a previous form of it. Every element of the series has associated a span of the given text that carries ... -
A Hybrid Aproach to Dynamic Course Generation on the WWW
("Dunarea de Jos" University of Galati, 2000)In recent years, hypermedia has been grown in interest in advanced research on teaching and learning. Futhermore, the extension of hypermedia toward intelligent hypermedia comes more than obviously to meet specific ... -
Finding Exception for Association Rules Via SQL Queries
("Dunarea de Jos" University Galati, 2000)Finding association rules is mainly based on generating larger and larger frequent set candidates, starting from frequent attributes in the database. The frequent sets can be organised as a part of a lattice of concepts ... -
Arhitectura of a computer based instructional system
("Dunarea de Jos" University of Galati, 2000)The paper describes the architecture of a tutorial system that can be used at various engineering graduate and postgraduate courses. The tutorial is using Internetstyle WWW services to provide access to the teaching ... -
Modular neuro-fuzzy networks: sollutions for explicit and implicit knowledge integration
("Dunarea de Jos" University of Galati, 2000)In this paper we propose a unified approach for integrating implicit and explicit knowledge in neurosymbolic systems as a combination of neural and neurofuzzy modules. In the developed hybrid system, training data set ... -
Secure Analog Data Transmission Based on Rössler Chaotic System Behavior
("Dunarea de Jos" University of Galati, 2000)This paper describes a new methodology for increasing the security of analog data transmission based on a mixture of the original analog signal with one of the state variables of Rössler chaotic system. The method is ...
