Căutare Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics după Titlu
Afișează articolele 21-40 of 230
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Automatic Modeling of the Linguistic Values for Database Fuzzy Querying
("Dunare de Jos" University of Galati, 2007)In order to evaluate vague queries, each linguistic term is considered according to its fuzzy model. Usually, the linguistic terms are defined as fuzzy sets, during a classical knowledge acquisition off-line process. But ... -
Automatic Modeling of the Linguistic Values for Database Fuzzy Querying
(2007)In order to evaluate vague queries, each linguistic term is considered according to its fuzzy model. Usually, the linguistic terms are defined as fuzzy sets, during a classical knowledge acquisition off-line process. But ... -
Automatic Processing of Radar Images for Electronic River Chart Generation in Ecdis Format
("Dunarea de Jos" University of Galati, 2003)Presenting the navigation environment in electronic format – ECDIS – triggers a major change of the classic method of cartography and raises up the need to approach a way of producing the charts in vector-like format. ... -
The Behavior Of Asymmetric Frontal Couplings With Permanent Magnets In Magnetic Powder And High Temperature Environments
("Dunarea de Jos" University of Galati, 2002)The main purpose of this paper is the comparative analysis of the behavior of frontal couplings with Nd-Fe-B permanent magnets in difficult environments, specific to metallurgy – such as environments with magnetic powders ... -
Buck Supplies Outiput Voltage Ripple Reduction Using Fuzzy Control
("Dunarea de Jos" University of Galati, 2007)Using the PWM control for switching power supplies the peaks EMI noise appear at the switching frequency and its harmonics. Using randomize or chaotic PWM control techniques in these systems the power spectrum is spread ... -
Building Similarity Maps of the Environment Using Sonar Information for the Navigation of Mobile Robots
("Dunarea de Jos" University of Galati, 2003)The objective of the work is to present a representation called similarity map based on some results in the evaluation of the SONAR system of a mobile robot. As environment a corner of our lab it is considered. Based on ... -
A Case Study Concerning Sales Prediction Using Sales Quantitative Prediction Methods
(2010)The sales condition the entire activity of a enterprise, its variation being considered the main risk factor on the performances and financial position of the enterprise. The importance of elaboration of such budget is ... -
Cellular Automata Codebooks Applied to Compact Image Compression
("Dunărea de Jos" Universiti of Galati, 2006)Emergent computation in semi-totalistic cellular automata (CA) is used to generate a set of basis (or codebook). Such codebooks are convenient for simple and circuit efficient compression schemes based on binary vector ... -
Channel Allocation Management Using Agents Technology
("Dunarea de Jos" University of Galati, 2009)Channel allocation schemes are management techniques meant to solve the radio access problem in the telecommunications area. There are several known schemes namely: static, dynamic, hybrid and flexible channel allocation ... -
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 ... -
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 ... -
A Comparative Study Above Two Self-Tuning Controllers With Aplication To The Control Of Synchronous Generator Excitation System
("Dunarea de Jos" University of Galati, 2000)This paper presents two self-tuning control structures synthesized through the minimization of two criterion functions. It is described the computation methodology of the control laws, both being particularized for the ... -
Comparison Between ZVS and ZVS-ZCS Bidirectional DC-DC Converter Topologies
("Dunarea de Jos" University of Galati, 2010)In this paper exhaustive comparative analysis has been done between a conventional ZVS converter and the ZVS-ZCS bidirectional DC-DC converters. A novel model of a bidirectional converter and its topology is introduced. ... -
Comparison of Three Phase 4-Leg Shunt Active Power Filter Using DQ, Indirect and Maximum Control Method
("Dunarea de Jos" University of Galati, 2011)In this paper is presented a comparative analysis of three control methods for a thee-phase active power filter (APF) with four legs, aiming at the power quality indicators: THD, power factor, unbalance. -
Comparison on Sensorless Control of Synchronous Motors
(Dunareade Jos University of Galati, 2002)The paper compares two different methods for speed and position estimation in AC permanent magnet synchronous motors vector control applications. The first method implies two observer blocks — one for the speed, and the ... -
Computational experience in Solving Large Linear Matrix Equations for Automatic Control
("Dunarea de Jos" University of Galati, 2004)State-of-the-art, uni-processor linear matrix equation solvers for automatic control computations are investigated and compared for various problem sizes. Generalpurpose SLICOT solvers are the most efficient ones for ... -
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 ... -
Computing Negentropy Based Signatures for Texture Recognition
(2007)The proposed method aims to provide a new tool for texture recognition. For this purpose, a set of texture samples are decomposed by using the FastICA algorithm and characterized by a negentropy based signature. In order ... -
Conceptual framework for cloud based ubiquitous learning environment through M-Learning
("Dunarea de Jos" University of Galati, 2013)Cloud computing is a recent trend in storing and managing data over a network. Cloud computing entrusts remote services with a user's data, software and computation. Here, we propose a design where a ubiquitous learning ... -
Considerations on the Effect of Plastic Deformation Over the Magnetic Behavior of Soft Ferromagnetic alloy FE-3%SI NO
(2002)The paper synthetically presents the results obtained over the degradation of magnetic properties of soft ferromagnetic sheets Fe-3%Si NO required mechanically in plastic deformation area. Chronologically, the evolution ...