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Afișează articolele 1837-1856 of 2993

    • Noise and Vibration Protective Solution Analysis for Technological Equipments 

      Anghelache, Diana (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper presents a cumulative and comparative analysis, concerning the noise and vibration pollution and protective approaches, monutoring the construction technological equipments. By means of the computer simulations, ...

    • Noise Levels in Workplaces of Cold Rolling Mill Plant 

      Tudor, Beatrice; Ciocan, Anișoara (Universitatea "Dunarea de Jos" din Galați, 2015)
      The excessive noise exposure is one of numerous physical hazards present in the steel industry. Considerable noise develops the steel strips rolling process. In this study are presented and discussed the noise levels at ...

    • Noise Study of a Naval Ship in Different Operating Modes on the Danube 

      Picu, Mihaela (Universitatea "Dunărea de Jos" din Galați, 2014)
      In this paper are described the experimental measurements of noise transmitted to the staff from a naval ship during different operating modes on the Danube. This paper is focused on the technical aspects of the Directive ...

    • 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 ...

    • Non-Linear Dynamic Behavior of a Ball Float Valve 

      Dragomirescu, Cristian; Crăifăleanu, Andrei (Universitatea "Dunărea de Jos" din Galați, 2012)
      The dynamic behavior of the spherical body floating in a liquid, part of a ball float valve, is analyzed from the point of view of the dynamic systems theory. The study of the motion illustrates the differences between ...

    • Nonlinear Approaches Regarding Mechanical and Thermal Behaviour of Visco-Elastic Vibration on Isolators 

      Năstac, Silviu (Un, 2013-10-01)
      Thermal effects inside the vibration elastomeric isolators have usually been neglected and this aspect can leads to certain differences between simulations and experiments. Continuous damping during the working cycle ...

    • Noțiuni și concepții privitoare la corelarea normelor juridice în cadrul sistemului de drept 

      Popescu, Getty Gabriela (Universitatea ,,Dunărea de Jos" din Galați, 2007-01)
      Orice societate îşi întemeiază structura şi funcţionalitatea pe baza unui model unic, normativ şi cultural, constituit dintr-un ansamblu de valori, norme, reguli, îndatoriri, cutume şi uzanţe, care asigură atât stabilitatea ...

    • A Noval Comparison of Class D and Class E Inverter Based High Frequency Application 

      Arumugam, S.; Rama Reddy, S. ("Dunarea de Jos" University of Galati, 2011)
      This paper deals with the simulation and implementation of class E inverter based induction heater system. Class E inverter is analyzed; simulated and implemented.

    • A Novel Analysis of Class e Inverter Based Induction Heating System 

      Arumugam, S.; Rama Reddy, S. ("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 ...

    • 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 ...

    • A Novel Parametric Model for the Human Respiratory System 

      Ionescu, Clara Mihaela ("Dunarea de Jos" University of Galati, 2003)
      The purpose of this work is to present some recent results in an ongoing research project between Ghent University and Chess Medical Technology Company Belgium. The overall aim of the project is to provide a fast method ...

    • A Novel ZCS-ZVS Hybrid Bidirectional DC-DC Converter for Fuel Cell and Supercapacitor Application 

      Rama Reddy, S. (The Annals of "Dunarea de Jos" University of Galati, 2010)
      This paper proposes a novel ZCS-ZVS hybrid bidirectional DC-DC converter based on fuel cells and supercapacitor devices. The described converter employs only one high frequency transformers to couple the half-bridge and ...

    • Numerical and Experimental Investigations Upon Articular Cartilage Mechanical Hysteresis 

      Frunză, Gheorghe; Ciornei, Florina (UDJG, 2010)
      The paper presents biomechanical and tribological considerations upon articular cartilage. The experimental in vitro results from static and dynamic contact tests are presented together with numerical modelling of the ...

    • Numerical Evaluation of Reliability Indicators Under Optimal Renewal Strategies 

      Mărăşescu, Nicolae ("Dunarea de Jos" University of Galati, 2012)
      This paper investigates the opportunity of using a numerical procedure for computing the renewal parameters of an equipment. The reasons of this approach reside in the sampled way we measure the process variables and the ...

    • Numerical Modelling of 3D Impact 

      Stelian, Alaci; Diaconescu, Emanuel; Ciornei, Florina; Irimescu, Luminița; Cerlincă, Delia; Rusu, Ovidiu (UDJG, 2010)
      The paper presents a virtual device designed for studying tri-dimensional impact. The main goal of the work is to present a solution for finding the coefficient of restitution for the tri-dimensional case of a sphere ...

    • Numerical simulation of the ship hull hydrodynamic performance 

      Bekhit, Adham (Universitatea „Dunărea de Jos” din Galați, 2023)

    • Numerical Simulations of the Special Isolation Devices Against Vibratory Actions 

      Năstac, Silviu-Marian (Universitatea "Dunărea de Jos" din Galați, 2007)
      In this paper the author use the physical and mathematical models for the antiseismic and antivibrational elastic systems and describe the dynamic behaviour of this systems, for the few types of the vital equipment - ...

    • A Numerical Solver for the Wheel-Rail Contact Subjected to Combined Loads 

      Crețu, Spiridon; Bărbînță, Constantin-Ioan (Universitatea ”Dunărea de Jos” din Galați, 2009)
      A working algorithm, able to be incorporated into a computer code, has been developed to solve the stress state in the general case of non-Hertzian contacts. Brent’s method has been involved to find the contact point for ...

    • Numerical Study on Ballistic Phenomena-Part Two 

      Bălan, Vasile; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2016)
      The study of ballistic phenomena (interior ballistics, exterior ballistics and terminal ballistics) is an activity that involves the use of complex and at the same time very expensive equipment. Also, another aspect worth ...

    • Numerical Treatment of some Complex Dynamic Processes of Saturated Induction Machine 

      Câmpeanu, Aurel; Ionescu, Augustin-Iulian; Câmpeanu, Toma ("Dunarea de Jos" University of Galati, 2002)
      Three variants for the mathematical models of the saturated induction machine (the exact one, the classical one and the simplified one) are used for the analysis of the reversal process combined with one short mechanical ...