Results 51 to 60 of about 5,309,030 (392)

Analysis and Optimization of Noise Response for Low-Noise CMOS Image Sensors [PDF]

open access: yes, 2012
CMOS image sensors are nowadays widely used in imaging applications and particularly in low light flux applications. This is really possible thanks to a reduction of noise obtained, among others, by the use of pinned photodiode associated with a ...
Cervantes, Paola   +3 more
core   +1 more source

Tomography by Noise [PDF]

open access: yesPhysical Review Letters, 2014
We present an efficient and robust method for the reconstruction of photon number distributions by using solely thermal noise as a probe. The method uses a minimal number of pre-calibrated quantum devices, only one on/off single-photon detector is sufficient.
Georg Harder   +3 more
openaire   +3 more sources

EMD-based filtering (EMDF) of low-frequency noise for speech enhancement [PDF]

open access: yes, 2012
An Empirical Mode Decomposition based filtering (EMDF) approach is presented as a post-processing stage for speech enhancement. This method is particularly effective in low frequency noise environments.
Chatlani, Navin, Soraghan, John J.
core   +1 more source

Metallic Ti3C2Tx MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio.

open access: yesACS Nano, 2018
Achieving high sensitivity in solid-state gas sensors can allow the precise detection of chemical agents. In particular, detection of volatile organic compounds (VOCs) at the parts per billion (ppb) level is critical for the early diagnosis of diseases ...
Seon Joon Kim   +11 more
semanticscholar   +1 more source

Chaos and noise [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2013
Simple dynamical systems—with a small number of degrees of freedom—can behave in a complex manner due to the presence of chaos. Such systems are most often (idealized) limiting cases of more realistic situations. Isolating a small number of dynamical degrees of freedom in a realistically coupled system generically yields reduced equations with terms ...
Salman Habib, Temple He
openaire   +4 more sources

The Parametric Aircraft Noise Analysis Module - status overview and recent applications [PDF]

open access: yes, 2011
The German Aerospace Center (DLR) is investigating aircraft noise prediction and noise reduction capabilities. The Parametric Aircraft Noise Analysis Module (PANAM) is a fast prediction tool by the DLR Institute of Aerodynamics and Flow Technology to ...
Bertsch, Lothar   +3 more
core   +1 more source

An intelligent bearing fault diagnosis system: A review

open access: yesMATEC Web of Conferences, 2019
Rolling element bearing (REB) is a well-known component that most extensively used in the industry. They operate in extreme condition (high temperature, dirty environment) which may lead to unexpected failure after the certain operation.
Saufi S.R.   +3 more
doaj   +1 more source

An integrated structure of air spring for ships and its strength characteristics

open access: yesScience and Engineering of Composite Materials, 2023
The increasing demand for the impact resistance of ships entails the excellent impact resistance and deformability of air spring (AS) for ships under high internal pressure.
Cheng Yuqiang   +4 more
doaj   +1 more source

Optical full Hadamard matrix multiplexing and noise effects [PDF]

open access: yes, 2009
Hadamard multiplexing provides a considerable SNR boost over additive random noise but Poisson noise such as photon noise reduces the boost. We develop the theory for full H-matrix Hadamard transform imaging under additive and Poisson noise effects.
Burling-Claridge, G. Robert   +3 more
core   +2 more sources

On the definition of noise

open access: yesHumanities and Social Sciences Communications, 2022
AbstractUrbanization has exposed people to extreme sound levels. Although researchers have investigated the ability of people to listen, analyze, and distinguish sound, the concept of noise has not been clearly articulated from a human perspective. The lack of knowledge on how people perceive noise limits our capacity to control it in a targeted manner.
Fangfang Liu   +6 more
openaire   +4 more sources

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