Results 31 to 40 of about 116,729 (347)
Energy-Efficient Low-Complexity Algorithm in 5G Massive MIMO Systems [PDF]
, 2021 Energy efficiency (EE) is a critical design when taking into account circuit power consumption (CPC) in fifth-generation cellular networks. These problems arise because of the increasing number of antennas in massive multiple-input multiple-output ...
A. Hamzah, Shipun +6 more
core +1 more source
Sound fields near building facades: comparison of finite and semi-infinite reflectors on a rigid ground plane [PDF]
, 2009 The sound field in front of, and close to a building facade is relevant to the measurement and prediction of environmental noise and sound insulation. For simplicity it is often assumed that the facade can be treated as a semi-infinite reflector, however
Attenborough +12 more
core +2 more sources
Research Progress on Thin-Walled Sound Insulation Metamaterial Structures
AcousticsAcoustic metamaterials (AMs) composed of periodic artificial structures have extraordinary sound wave manipulation capabilities compared with traditional acoustic materials, and they have attracted widespread research attention.
Yumei Zhang +7 more
doaj +1 more source
Predicting the sound insulation of walls [PDF]
, 2009 Between 1990 and 1998, the author published five conference papers which described the gradual development of a simple theoretical model for predicting the sound insulation of building partitions. The first aim was to extend Sharp's model for cavity
Davy, J
core +1 more source
The improvement of a simple theoretical model for the prediction of the sound insulation of double leaf walls [PDF]
, 2010 This paper presents a revised theory for predicting the sound insulation of double leaf cavity walls that removes an approximation, which is usually made when deriving the sound insulation of a double leaf cavity wall above the critical frequencies of ...
Davy, J
core +1 more source
SOUND INSULATION OF A MECHANICAL WORKSHOP
Safety Engineering, 2014 The paper presents a design process related to sound insulation of a small mechanical workshop for storing eccentric presses, which is located in a densely populated housing estate. Starting from the theoretical model of acoustic insulation power of a single solid partition, a complex partition and a multi-
Petrović, Zoran +3 more
openaire +2 more sources
Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges
Advanced Functional Materials, EarlyView.Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley +1 more source
International Journal for Computational Civil and Structural Engineering, 2020 The calculation methods on the base of the concentrated parameters models, which were formed in the XX century, allowed to get simple and theoretically consistent solutions for the problems of one-layered building partitions sound insulation finding. The
Arkadiy Zakharov, Ivan Saltikov
doaj +1 more source
Influence of loudspeaker directivity on the measurement uncertainty [PDF]
, 2011 One of the most significant aspects of a building’s acoustic behavior is the airborne sound insulation of the room façades, since this determines the protection of its inhabitants against environmental noise.
Díaz Sanchidrián, César +3 more
core +1 more source
Measurement and Calculation of Sound Insulation [PDF]
The Journal of the Acoustical Society of America, 1930 The term “reduction factor” has been given different meanings. Architects, builders and even many acoustical engineers, are not aware of these different meanings, and consequently unnecessary confusion arises whenever insulation data from different laboratories are compared.
openaire +1 more source