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Structural Behaviour and Vibro-Acoustic Analysis of a Composite Rail Vehicle Car Body Roof
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On a nondestructive viscoelastic characterization of sport surfaces through a model-based approach
No full textA Spatial Interaction Model for the Representation of the Mobility of University Students within the Italian Territory
No full textHMDiR: an HRTF dataset measured on a mannequin wearing XR devices
No full text<p>The HMDiR dataset (Head-Mounted-Display acoustic Impulse Responses) comprehends HRIR measurements for 1200 locations collected over a Neumann KU-100 mannequin fitted with a variety of HMDs used for virtual, augmented, or mixed reality. The database can be used to run subjective and objective studies on the impact of wearing headgear on spatial audio perception and source localization. Data is provided in <em>.mat</em> format, readable in MATLAB.</p>
<p>Source locations measured comprehend 200 azimuth angles from 0º to 358.2º in steps of 1.8º and six elevation rings from -36º to +54º in steps of 18º. Distance is 1 meter. The data was measured in November 2017 using ScanIR v2.</p>
<p>The headsets measured were the following:</p>
<ul>
<li>Microsoft Hololens (2016 version)</li>
<li>Metavision Meta-2</li>
<li>HTC Vive</li>
<li>Samsung GearVR SM-R322 </li>
<li>Oculus Rift CV1</li>
</ul>
<p>The data is available as <em>.mat </em>files prepared in two different formats:</p>
<ul>
<li><strong>MARL format:</strong> complete individual-entry-based structure, includes metadata information for elevation, azimuth, distance, headset type, location, measurement signal and sample rate</li>
<li><strong>Compact format:</strong> simplified matrix for only HRIR data packed as a 6x200 matrix. Rows spanning elevations from -36º to +54º from top-to-bottom. Columns spanning azimuth positions from 0º to 358.2º (clockwise) left-to-right.</li>
</ul>
<p>If you make use of this dataset for academic purposes, please cite the following white paper:</p>
<p><em>Andrea Genovese, and Agnieskza Roginska, HMDiR: an HRTF dataset measured on a mannequin wearing XR devices, Audio Engineering Society Conference: 2019 AES International Conference on Immersive and Interactive Audio. Audio Engineering Society. </em></p>More details on this data, its analysis, and the tools used to measure it, are available in the reference list provided
Mechanical characterization and modeling of an innovative composite material for railway applications
No full textA Novel Methodology for Non-Destructive Characterization of Polymers’ Viscoelastic Properties
No full textA procedure of non-destructive experimental tests aimed at determining the viscoelastic characteristics of the rubbers is described. After recalling the basic principles of viscoelastic theory, the experimental setup and the measurements necessary for the test are described. The procedure consists in hitting the surface of the object under test with a specially instrumented indenter. The techniques for processing the acquired signals to identify the characteristic starting and ending points of indentation in the time-histories are then illustrated. By analyzing separately the phases of the free drop of the indenter and the phase of contact between indenter and rubber, the main mechanical characteristics, such as stiffness and damping of both the instrumented indenter and the bulk of rubber under test are estimated. The methods of calculating the viscoelastic parameters of the rubber starting from the knowledge of the above mechanical parameters are then illustrated. The determined results, in terms of storage and loss moduli, are compared with those provided by classic DMA type tests. The qualitative agreement is excellent. The quantitative agreement falls in the scattering range typical for this kind of measurement. The paper is completed with a discussion of the main causes of measurement uncertainty
Applications of agent-based models for optimization problems: A literature review
No full textAgent based models (ABM) have been recently applied to solve optimization problems whose domains present several inter-related components in a distributed and heterogeneous environment. In this work we illustrate the state of the art related to the use and to the application of ABM as optimization technique, given their peculiarity in dealing with the representation and the simulation of complex systems. After a description of the approach and a comparison with classical heuristics, an extensive review aimed at evaluating the impact of these methodologies in the Operational Research/Management Science literature is provided. © 2011 Elsevier Ltd. All rights reserved
Location analysis for public sector decision-making in uncertain times: An introduction to the special issue
Full text linkL’enciclopedismo iconologico come fonte poetica e artistica
No full textIl saggio analizza il ruolo della letteratura simbolica nella produzione artistica cinquecentesc
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