Sfoglia per Soggetto "Acoustics"
Items 1-20 di 28
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Acoustic and Perceived Measurements Certifying Tango as Voice Treatment Method
(2018)Voice disorders are affecting everyday life in many levels, and their prevalence has been studied extensively in certain and general populations. Notably, several factors have a cohesive influence on voice disorders and ... -
Analytical treatment of in-plane parametrically excited undamped vibrations of simply supported parabolic arches
(2003)The present work offers a simple and efficient analytical treatment of the in-plane un-damped vibrations of simply supported parabolic arches under parametric excitation. After thoroughly dealing with the free vibration ... -
An Assessment of Airport Environmental Noise Action Plans with Some Financial Aspects: The Case of Athens International "Eleftherios Venizelos"
(2012)Environmental noise is an important environmental factor responsible for the degradation of the urban environment and the quality of life especially in countries where climatic conditions allow for outdoor activities and ... -
Assessment of environmental noise due to aircraft operation at the Athens International Airport according to the 2002/49/EC Directive and the new Greek national legislation
(2014)Athens International Airport "Eleftherios Venizelos" (A.I.A.) is one of the most modern, functional and safest airports in the world and constitutes the largest hub of air travel in south eastern Europe. Environmental noise ... -
Design optimization of quarter-car models with passive and semi-active suspensions under random road excitation
(2005)A methodology is presented for optimizing the suspension damping and stiffness parameters of nonlinear quarter-car models subjected to random road excitation. The investigation starts with car models involving passive ... -
The dynamic response of stereocilia by a gradient elasticity model
(2016)In the inner ear, stereocilia are the mechanosensing organelles of hair cells which respond to fluid motion for the hearing function. Stereocilia are lined up in several rows of increasing height like a stair case. At the ... -
EFFECT OF TRANSOSSEOUS APPLICATION OF LOW-INTENSITY ULTRASOUND AT THE TENDON GRAFT-BONE INTERFACE HEALING: GENE EXPRESSION AND HISTOLOGICAL ANALYSIS IN RABBITS
(2009)The present study investigates the effect of transosseous low-intensity pulsed ultrasound (LiUS) on the healing at tendon graft-bone interface, in molecular and histological level. The anterior cruciate ligament (ACL) in ... -
Entropy-based optimal sensor location for structural model updating
(2000)A statistical methodology is presented for optimally locating the sensors in a structure for the purpose of extracting from the measured data the most information about the parameters of the model used to represent structural ... -
Existing legal framework for environmental acoustics in Greece
(2005)Noise is one of the most important degrading factors of the acoustic environment in Greece. The major sources of National law for the protection of the environment is the Constitution, the laws and lawful provisions issued ... -
Experiments in acoustic source localization using sparse arrays in adverse indoors environments
(2014)In this paper we experiment with 2-D source localization in smart homes under adverse conditions using sparse distributed microphone arrays. We propose some improvements to deal with problems due to high reverberation, ... -
Fault detection and optimal sensor location in vehicle suspensions
(2003)A statistical system identification methodology is applied for performing parametric identification and fault detection studies in nonlinear vehicle systems. The vehicle nonlinearities arise due to the function of the ... -
Flexural-torsional vibration of simply supported open cross-section steel beams under moving loads
(2005)The present work deals with linearized modal analysis of the combined flexural-torsional vibration of simply supported steel beams with open monosymmetric cross-sections. acted upon by a load of constant magnitude, traversing, ... -
Guided ultrasound wave propagation in intact and healing long bones
(2006)Ultrasonic evaluation of bone fracture healing has been traditionally based on the measurement of the propagation velocity of the first arriving signal (FAS). However, the FAS in general corresponds to a lateral wave that ... -
Integrated Video and Acoustic Emission Data Fusion for Intelligent Decision Making in Material Surface Inspection System
(2022)In the field of intelligent surface inspection systems, particular attention is paid to decision making problems, based on data from different sensors. The combination of such data helps to make an intelligent decision. ... -
Modelling the Environmental Effects of Railway Vibrations from Different Types of Rolling Stock: A Numerical Study
(2015)This paper analyses the influence of rolling stock dynamics on ground-borne vibration levels. Four vehicle types (Thalys, German ICE, Eurostar, and Belgian freight trains) are investigated using a multibody approach. First, ... -
Monitoring and assessing the effects from Metro networks construction on the urban acoustic environment: The Athens Metro Line 3 Extension
(2018)The Line 3 Extension from Aghia Marina to Piraeus constitutes one of the most significant construction projects in full development in Athens Greater area. For the management and abatement of the air borne noise generated ... -
Music retrieval over wireless ad-hoc networks
(2008)Wireless networks introduce new opportunities for music delivery. The trend of using mobile devices on wireless networks can significantly extent the recent change of paradigm in the model of music distribution by allowing ... -
Nonlinear radial oscillations of encapsulated microbubbles subject to ultrasound: The effect of membrane constitutive law
(2008)The nonlinear radial oscillations of bubbles that are encapsulated in an elastic shell are investigated numerically subject to three different constitutive laws describing the viscoelastic properties of the shell: the ... -
Numerical simulations of the aspherical collapse of laser and acoustically generated bubbles
(2007)The details of nonlinear axisymmetric oscillations and collapse of bubbles subject to large internal or external pressure disturbances, are studied via a boundary integral method. Weak viscous effects on the liquid side ... -
On multicast beamforming and admission control for UMTS-LTE
(2008)Transmit beamforming for physical layer multicasting is emerging as an appealing transmission modality for next-generation cellular wireless systems, notably UMTS-LTE. Optimal design of the transmit beamformer(s) from a ...