Căutare Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați după Data publicării

Afișează articolele 321-340 of 1845

    • Realities of the Self-Employment Process in Romania 

      Şarpe, Daniela; Iordăchescu, Mihaela; Stan, Cătălina (Universitatea "Dunărea de Jos" din Galaţi, 2006)
      The present analyse was developed within the framework of Self-Employment project, i.e. “Guidance and counselling for self-employment”, financed under EU Leonardo da Vinci Programme. The aim of this project is to identify ...

    • Integrating Data Mining Into Business Intelligence 

      Enache, Maria Cristina (Universitatea "Dunărea de Jos" din Galaţi, 2006)
      Data Mining is a broad term often used to describe the process of using database technology, modeling techniques, statistical analysis, and machine learning to analyze large amounts of data in an automated fashion to ...

    • Mathematical Modelling of Steel Continuous Casting Hydrodynamics (1) 

      Munteanu, Viorel; Sava, Simona (Universitatea "Dunărea de Jos" din Galați, 2006)
      The quality increase of steel continuous casting and a reliability indices of afferent installations imposes the automation systems adoption of machines of continuous casting of steel. In this paper enters original ...

    • On the Kinetics of Sol Gel Al:ZnO thin Films Crystallization on Silicon Substrate 

      Mușat, Viorica; Canejo, Joan; Iticescu, Cătălina (Universitatea "Dunărea de Jos" din Galați, 2006)
      Recently, there is a growing interest in applying ZnO thin films on silicon buffer substrates for p-n junction devices, optical wave guide, etc. A sol gel process is very attractive technique for obtaining oxide thin ...

    • Some Aspects Regarding the Elaboration of Multiple precessional Gear Theory and Modern Manufacturing Technology 

      Bostan, Ion; Dulgheru, Valeriu (Universitatea "Dunărea de Jos" din Galați, 2006)
      The engineering complex study of the triad “gear-technology-transmission” has permitted to elaborate a new type of precessional transmissions with multicouple gear. In this paper, the authors present the mathematic model ...

    • Protective and Decorative Vacuum's Coatings on Wares of Artistic Castings 

      Grechanyuk, V.; Grechanyuk, I.; Grechanyuk, N. (Universitatea "Dunărea de Jos" din Galați, 2006)
      The problem of environmental protection is extraordinarily important, and its actuality will increase with every year. In this aspect, processes of depositing of coatings in vacuum have got serious advantages before ...

    • Research About the Vibration Parameters for a Cold Rolling Mill Machine 

      Dragomir, Ștefan; Dragomir, Georgeta; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2006)
      By using the equipments of vibration measurement we can fight against the damages (strip undulation and thickness variation on the length) who is show in while of mill work. The amplitude of vibration parameters determine ...

    • Surface Hardening of 40Cr10 steel After Short Time Nitriding in Fluidized Bed 

      Bâclea, Adolf; Dobrovici, Sorin; Drugescu, Elena; Cazacu, Nelu; Preda, Nelu (Universitatea "Dunărea de Jos" din Galați, 2006)
      The paper is based by nitriding in fluidized bed experiments over laboratory plant. Fluidization applications are characterized by high values of mass and heat transfer coefficients. For experiments were used 40Cr10 ...

    • Oxidizing Influence Over Surface Structures and Properties for A3k Steel Nitrocarburized in Fluidized Bed 

      Cazacu, Nelu; Dobrovici, Sorin; Bâclea, Adolf; Tănăsescu, Victor; Preda, Nelu (Universitatea 'Dunărea de Jos" din Galați, 2006)
      Surface duplex thermochemical treatment (oxinitrocarburizing) has principal scope to obtaining superficial mechanical higher properties with increasing corrosion capacity. The paper is based by oxinitrocarburizing ...

    • Experimental Equation of Deformation Behaviour of a Concrete Steel 

      Cănănău, Nicolae; Gurău, Gheorghe; Alexandru, Petrică; Corobete, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2006)
      The plastic deformation behavior is defined by the function of the deformation strength according to the strain, strain rate and temperature as the factor of the deformation process. The behavior law establishes by the ...

    • Some Rezults Concerning No-Storage Wide-Diesel Systems Control 

      Vlad, Ciprian; Cutululis, Nicolaos Antonio; Lefebvre, Julie; Ceangă, Emil ("Dunarea de Jos" University of Galati, 2006)
      This paper deal with the dynamics of an autonomous no storage wind-diesel system, comprising a diesel generator and a controlled wind system with a hypo/hyper synchronous cascade. The objective is to maximize the wind ...

    • Stationary Frame Active Power Filter Control Based on Multiresolution Analysis 

      Culea, Mihai; Dumitriu, Teodor; Nichita, Mihai; Munteanu, Traian ("Dunarea de Jos" University of Galati, 2006)
      The paper presents an active power filter control method. The reference signal is generated in the stationary reference frame α-β using multiresolution analysis and the controllers used are P-resonant controllers, suitable ...

    • Aspects Regarding the Neuro-Adaptive Control Structura Proprieties. Application to the Nonline Pneumatic Servo System Benchmark 

      Stancu, Alexandru; Puşcaşu, Gheorghe; Codreş, Bogdan ("Dunarea de Jos" Universsity of Galati, 2006)
      Generally, control techniques based on multilayer neural networks are used especially in the case of non-linear process and less in case of linear process, because classical control techniques are good enough and relatively ...

    • Non-Conventional Method for Friction Compensation in DC Drive Position Tracking 

      Dumitriu, Teodor; Culea, Mihai; Nichita, Mihai; Munteanu, Traian ("Dunarea de Jos" University of Galati, 2006)
      Friction, especially its nonlinear components, may degrade the tracking performance of any servo drive systems. Focused on high precision positioning of DC electrical drive the paper proposes an easy method to compensate ...

    • Indirect Control of a Single-Phase Active Power Filter 

      Roşu, Emil; Culea, Mihai; Dumitriu, Teodor; Munteanu, Traian ("Dunarea de Jos" University of Galati, 2006)
      The control of shunt active power filters using PWM inverters consists in generating a reference by separating, using different methods, the harmonics to be eliminated. The methods used are time-consuming and need dedicated ...

    • Power Conditioning System Topology For Grid Integration of Wind and Fuel Cell Energy 

      Găiceanu, Marian ("Dunarea de Jos" University of Galati, 2006)
      This paper shows the topology of the hybrid grid-connected power system and the performances of the front-end three-phase power inverter. The renewable sources of the hybrid power system consist of a solid oxide fuel cell ...

    • The Influence of Non-Homogenous Dielectric Material in the Waveguide Propagation Modes 

      Badea, Nicolae; Voncilă, Ion ("Dunarea de Jos" University of Galati, 2006)
      The aim of this paper is to indicate the equations of electromagnetic wave in homogenous and non-homogenous dielectric material, estabilising the bundary conditions and solves by FEM the equations of the electromagnetic ...

    • A Novel Feature Extraction Method for Isolated Word Recognition Based on Nested Temporal Averaging 

      Dogaru, Radu; Costache, Gabriel Nicolae; Dumitru, Octavian; Gavat, Inge ("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 ...

    • Sonar Target Localization Based on Spike Coded Spectrograms 

      Peremans, Herbert; Fontaine, Bertrand ("Dunarea de Jos" University of Galati, 2006)
      Target location is coded into the pattern of spikes that run up the auditory nerve to the bat's brain. Realistic scenes containing multiple, closely spaced, reflectors give rise to complex echo signals consisting of multiple ...

    • Minimizing the Error Tracking of Mobile Terminals by Kalman Filtering 

      Bogdan, Ion (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.