Exact(1)
Noise assessment was based on mandatory noise modeling according to the Directive 2002/49/EC of the European Parliament and of the Council European Commissionn 2002) (see Supplemental Material, "Noise assessment," pp. 11 12).
Similar(59)
Extensive computer analysis of body construction and materials, noise and vibration sources and driving dynamics is done in the early stages of vehicle design before any metal parts are made.
Two specific applications are investigated: (i) the improvement of porous materials noise reduction coefficient using meso-perforations (ii) the effects of lateral air gaps on the normal incidence sound absorption of mono-layer and two-layer porous materials.
Overall, this study is envisioned to aid in the discernment of the variants of asphalt pavement materials' noise damping capabilities in a fundamental form based on the relationships between vibroacoustical and mixture materials' properties.
The questions included how satisfactory their work area was to them in terms of accessibility, comfort, height of the working surface, ease of handling their equipment, provision and accessibility of required materials, noise levels, thermal comfort, lighting, working schedules, movements on foot and absence of situations exposing to physical or verbal aggression.
Mechanisms of textile materials for noise absorption and noise insulation in vehicle interiors are analyzed.
The conclusion may be valuable to the application of viscoelastic damping material on noise and vibration control of submarines and underwater pipes.
It can be caused by movement of the part in its fixturing, thermal growth in the machine, residual hysteresis in the bonnet material, electrical noise in the load cell signal, or drift in the DC signal amplifier.
Still, the festival has always sought scores from around the world, and if the Brooklyn style suffuses its offerings, that is probably because the spotlight here is on young composers whose defining quality is not their place of origin but their freewheeling approach to musical materials — including noise and silence — and ways of assembling them.
However, these commercial photodetectors show some shortcomings, such as expensive material cost, large noise characteristics, and poor integration with the present silicon-based electronic process.
Most probably, the largest influences are due to inhomogeneity in walls (doors, windows and various types of material), underestimation of noise level, and impact of multipath propagation.
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