Căutare 1995-2015 după Titlu

Afișează articolele 11-30 of 326

    • About Signals' Spectrum 

      Grigorescu, Luiza; Oproescu, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2010)
      Due to this Fourier series exclusive interpretation applied to periodical signals, which shows that a stationary harmonic signal with a single pulsation  cannot contain components of other pulsations but its own pulsation ...

    • About the Free Parameter Vibrations of the Mechanical Systems 

      Cauteș, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2008)
      The oscillation movement of a mechanical non-linear system is not easy to solve exactly in an analytical way. The approximate solutions are based on different methods and give different values with different approximation ...

    • About the Hysteresis-Loop of the Mechanical Oscillators 

      Cauteș, Gheorghe (Universitaea "Dunărea de Jos" din Galați, 2011)
      The work presents firstly the representation of the typical Hysteresis-loop as function between the indoor forces of the oscillator as friction and elastic forces dependant on displacement and, otherwise, as function between ...

    • About the Parametric Modelling of the Protective structure Included in a Tractor Cabin in Order to Study its Protective Capability Using the Finite Element Method 

      Dumitrache, Petru (Universitatea "Dunărea de Jos" din Galați, 2014)
      The objective of the paper is the highlighting of the main aspects that are considered in parametric modelling of the protective structures included in a tractor cabin in order to study its protective capability, using ...

    • About the Vibrations of the Mechanical Systems with Non-Linear Damping 

      Cauteș, Gheorghe (Universitatea "Dunarea de Jos" din Galați, 2009)
      This work will analyze the non-linear vibrations of the mechanical systems, actually the ones with non-linear damping. If we consider damping F( x,x ) x( k k x );k1,k2 R 2 = − 1 − 2 Î & & & then the differential ...

    • Acoustic Absorption Coefficient Variationof Sound Absorbing Structures and Materials 

      Anghelache, Diana (Universitatea "Dunărea de Jos" din Galați, 2008)
      The task of this work is the acoustic absorption coefficient variation study of sound absorbing structures and materials. Three construction equipments have been considered according to their different cabin design. ...

    • Acoustic and Parametric Studies of the Experimental Radial Sonic Generator 

      Pană, Daniela (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      In this paper the parameters of the acoustic field were studied experimentally,along with the frequency produced by the generator and the circular diagram of the generator’s acoustic emission, the influence of the nozzle’s ...

    • Acoustical Telemetry 

      Oproescu, Gheorghe; Gheorghe, Cauteș (Universitatea "Dunărea de Jos" din Galați, 2006)
      The work presents a method of position measuring of a mobile body on straitened areas using the acoustical wave. The advantages of the acoustical telemetry consist on contactless measurement of the position and on higher ...

    • Advaced Geometrical Tools for Modelling Plastic Medical Accesories for the Aerosol Instruments Devices 

      Goanță, Adrian Mihai (Universitatea 'Dunărea de Jos" din Galați, 2012)
      This paper aims to present some advanced modelling tools used in modelling three-dimensional plastic medical accessories related to aerosol devices. The tools presented in the paper are applied in particular to generate ...

    • Algorithms for Objects' Shape Recognition and Measurement Before Gripping 

      Srarețu, Ionel; Itu, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2011)
      The paper proposes an algorithmic methodology to solve a necessary first step, namely visualization, recognition and measurement of objects, for gripping, in particular by means of anthropomorphic grippers for robots. ...

    • All-Purpose Low Frequency Numerical Filter 

      Oproescu, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2007)
      A real signal is a complex system with mixed components. In addition to needed components appear unusable components with different origin, namely noise. The clearance or the reduction of the unwanted components is ...

    • An Analysis of Vibration Transmission to Handlers Trucks 

      Picu, Mihaela (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      During movement of vehicles, drivers are subjected to vibrations transmitted by the engine, road irregularities, etc. They are extremely harmful for drivers and passengers. In this paper were studied and measured the ...

    • An Evaluative Study of the Competitive Management 

      Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2010)
      In this paper, competitiveness, will be understood as the capacity (potential) to provide performance (compared with other similar elements), in a very exact way, within a macroeconomic concrete context and at a certain ...

    • An Exact Method for Analysis of Kinematics for Mechanisms by Using Vectors Which Form Closed Polygons 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      Construction machinery equipments are complex, with a high degree of mobility. Their operation is done with groups of hydraulic cylinders equal in number with the mobility. This paper presents an exact calculation, which ...

    • An Original Solution for the Ground Support Mechanism of Compact Loaders 

      Petrea, Ioan; Leopa, Adrian (Universitatea "Dunărea de Jos" din Galaţi, 2003)
      This paper presents constructional solution adoption draftworking gear, loader IC 04, assure existence every tyre, reaction non-vanishing. The evidence profitability solution suspension draft.

    • Analitical evaluation of the Dynamic Performances for the Wheel Loader Analysis 

      Debeleac, Carmen (Universitatea "Dunărea de Jos" din Galați, 2004)
      In this paper the author propose a physical and mathematical model, useful to analyse the dynamic performances of the wheel loader equipment. It supposed that the evaluation of the natural frequencies constitute a well ...

    • Analysis of the Anti-Seismic Passive Isolation System Based on the Virtual Prototyping 

      Năstac, Silviu (Universitatea "Dunărea de Jos" din Galați, 2004)
      This work propose a new onset for dynamic behaviour analysis of the passive anti-seismic and/or anti-vibrational elastic elements and systems. The basics of this new approach are constituted by the virtual prototyping ...

    • Analysis of the Dynamic Response to Stochastic Actions on the Tilting System of the Loader Bucket with Hydraulic Correlator 

      Petrea, Ioan; Leopa, Adrian (Universitatea "Dunărea de Jos" din Galați, 2004)
      The resistance encountered by the active organ – the bucket – of the loader when digging into the material pile is part of the category of external influences applied to the equipment. Generally this force is not constant ...

    • Analysis of the Sift Feature Destriptors Alghorithm Implementation Used for Object Pieces Recognition 

      Moldovan, Constantin (Universitatea "Dunărea de Jos" din Galați, 2012)
      Recognition algorithms based on local features such as: are widely used in a large number of computer vision applications object tracking, object reconstruction from images, detection and recognition of objects and people ...

    • Application of Knowledge for the Maintenance of The Enterprise 

      Dașchievici, Luiza; Ghelase, Daniela (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      In the paper we aim to offer a strategic vision of knowledge management (KM) that takes into account the synergy between technological and behavioral issues so necessary for survival in the current economic context. In ...