2010 fascicula14 nr1
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Neueste Zugänge
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Study on the influence of Sonic Generator Geometry on Acoustic Parameters
(Universitatea "Dunărea de Jos" din Galați, 2010)The acoustical parameters, dimensional determination and construction of sonic generator is described in the paper. The generator’s dimensional determination and construction show that the nozzle slot, the axial resonator ... -
Filter Signals a First Step in Interpreting Experimental Results
(Universitatea "Dunăread de Jos" din Galați, 2010)After recording and storage of experimental data, a first step in their processing is filtering, ie, removal of parasitic components (noise) accompanying the signal due from other machines or equipment in service or ... -
A Method Used to Determin the Power Necessary for Hydraulic Excavators
(Universitatea "Dunărea de Jos" din Galați, 2010)This paper presents a method of verification in the design phase, the mechanical power necessary involvement hydraulic pumps for excavators with bucket reverse.Because, in the design phase the digging forces are not ... -
Assembly Modeling Using Catia System
(Universitatea "Dunărea de Jos" din Galați, 2010)CATIA is one of the most performance graphics programs that has been created for the production of technical drawings in the 2d and 3d with a high precision. In this paper, we have presented a simple assembly that is a ... -
About Signals' Spectrum
(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 ... -
The Emfi Material and their Use
(Universitatea "Dunărea de jos" din Galați, 2010)ElectroMechanical Film (EMFi) is a thin, plastic material that can be utilized as a sensor and actuator. EMFi is quite new material in the field of ultrasonics and has favorable properties like good matching to air ... -
Modern CAD Tools Used in Mechanical Design
(Universitatea "Dunărea de Jos" din Galați, 2010)This paper aims to present synthetically as many of those tools that are part of Mechanical Desktop 2008 software with notable performance in the CAD environment and to justify this performance by the presentation of the ... -
An Evaluative Study of the Competitive Management
(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 ... -
Considertions on the Mechanical Vibrations of an Electronic Circuit Board
(Universitatea "Dunărea de Jos" din Galați, 2010)The paper analyzes the dynamic stresses induced by mechanical vibrations on an electronic circuit board, considering different study hypotheses, resulting from real cases presented in technical texts. The corresponding models ... -
Engineering and Creativity. Romanian Policy Regarding Innovation and Scientific Research Devalopment
(Univerisitatea "Dunărea de Jos " din Galați, 2010)The goal of Lisbon Agenda is to make the EU "the most dynamic and competitive knowledge-based economy in the world, capable of sustainable economic growth improving skiels for more and better jobs and greater social ... -
Experimental Researches on the Sound Absorption Composites Used for Public Worket Equipment
(Universitatea "Dunărea de Jos" din Galați, 2010)Decreasing of sound and vibration global level inside and/or outside the public works equipment’s cabin as well as the reduction the noise pollution or the pollution accounted by the vibration and mechanical shocks on ... -
A Behavioral Approaach for Competitive Business Process Management
(Universitatea "Dunărea de Jos" din Galați, 2010)Today’s economic context allows corporations and their business environment to produce larger and larger amounts of data relying on the latest information. For the survival in actual complex and unpredictable environment, ... -
On Line Competitiveness Based on Adeptive Control of the Manufacturing System
(Universitatea "Dunărea de Jos" din Galați, 2010)Competitiveness fully and synthetically characterizes the viability of an enterprise. In the economics literature competitiveness is analyzed in particular in economic and managerial terms with almost no insight into the ... -
The Analytical Exact Solutions of Non-Linear Differential Equations Which Describe the Parametric Free Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos' din Galați, 2010)The movements of many material systems can be described by differential equations that have coefficients that depend on time. It is difficult to determine the solutions of these equations. Although many concrete problems ... -
About Non-Autonomous Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2010)Non-linear vibrations of mechanical systems are described by differential equations of the second order, which are generally written .. . x f ( x, x,t ) 0 . In this work we study non-autonomous vibrations of mechanical ... -
Noise and Vibration Protective Solution Analysis for Technological Equipments
(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, ...
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