Results 121 to 130 of about 1,442,765 (346)
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study evaluates a novel cone‐beam computed tomography (CBCT) imaging solution integrated onto a conventional C‐arm linear accelerator (linac) with increased gantry speed. The purpose is to assess the impact of improved imaging hardware and reconstruction algorithms on image quality.
Theodore Arsenault +9 more
wiley +1 more source
Low-frequency cabin noise of rapid transit trains
Noise MappingRapid transit or mass rapid transit (MRT) is a high-capacity public transport designed to carry a large number of passengers, especially during the peak hours. They are becoming very popular in major cities and some deem the presence of the rapid transit
Lee Hsiao Mun, Lee Heow Pueh
doaj +1 more source
Development of an on-site system for measuring the low-frequency noise and complainant’s responses
Journal of Low Frequency Noise, Vibration and Active Control, 2018 An on-site system for measuring low-frequency noise and complainant's responses to the low-frequency noise was developed to confirm whether the complainant suffer from the environmental noise with low-frequency components.
Hiroshi Sato +2 more
doaj +1 more source
Noise Characteristics of ±800 kV HVDC Convert StationBased on Spectrum Analysis
Zhongguo dianli, 2019 By collecting the sound pressure signals of the aerodynamic noise of the converter transformer fans, the electric field noise of the smoothing reactors and the electric field noise of the DC/ AC filter field in the 800 kV converter station, the spectrum ...
Yu HAN, Chao FAN, Guangke WANG, Qiang HE
doaj +1 more source
White-noise-aided Control [PDF]
arXiv, 2008 The issue of white-noise-aided control is considered and its availability is proved. And a noise-aiding way is developed to stabilize perturbed systems to be input-to-state stable (ISS) with respect to (w.r.t.) perturbations. To illustrate its effectiveness, the white-noise-aided control of a parameter perturbed chaotic Chen system is given as an ...
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background This study aims to develop a novel predictive model for determining human papillomavirus (HPV) presence in oropharyngeal cancer using computed tomography (CT). Current image‐based HPV prediction methods are hindered by high computational demands or suboptimal performance.
Junhua Chen +3 more
wiley +1 more source
The influences of low frequency noise on mental performance
Journal of Mazandaran University of Medical Sciences, 2008 Background and Purpose: Although the evolution of industrial systems toward digital technologies decreased the exposure to high levels of noise, it has created some problems encountered with low level and provoking noise (low frequency noise).
J. Hatami +4 more
doaj
Effect of luminance noise on the object frequencies mediating letter identification
Frontiers in Psychology, 2014 Purpose: To determine if the same object frequency information mediates letter contrast threshold in the presence and absence of additive luminance noise (i.e. noise-invariant processing) for letters of different size.
Cierra Michelle Hall +7 more
doaj +1 more source
Experiment-simulation Study on Noise Reduction of Cylinder Shell with Horn Helmholtz Resonator
Tehnički Vjesnik, 2020 This paper focuses on the noise reduction of the cylindrical structure at low frequency (130 Hz-180 Hz). The low-frequency noise response spectrum in the cylindrical cavity is obtained by using the Helmholtz resonator (HR) to reduce the noise peak ...
Wenjie Yan +3 more
doaj +1 more source
Adaptive Noise Reduction Scheme for Salt and Pepper [PDF]
arXiv, 2012 In this paper, a new adaptive noise reduction scheme for images corrupted by impulse noise is presented. The proposed scheme efficiently identifies and reduces salt and pepper noise. MAG (Mean Absolute Gradient) is used to identify pixels which are most likely corrupted by salt and pepper noise that are candidates for further median based noise ...
arxiv