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Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]
, 2011 The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Cheng, Zhe +3 more
core +1 more source
A versatile entropic measure of grey level inhomogeneity [PDF]
Physica A: Statistical Mechanics and its Applications, 2009 The entropic measure for analysis of grey level inhomogeneity (GLI) is proposed as a function of length scale. It allows us to quantify the statistical dissimilarity of the actual macrostate and the maximizing entropy of the reference one. The maximums (minimums) of the measure indicate those scales at which higher (lower) average grey level ...
openaire +2 more sources
Directions analysis in grey-level images [PDF]
, 1995 This paper presents a study of anisotropy in digital images, i.e. the detection of main directions and the quantification of their occurrence rate. Human vision is usually very powerful for such a feature-based analysis, because it simultaneously performs a multi-level analysis, from the local inspection of details to the more global analysis of ...
Stéphane Bres, Hubert Emptoz
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Effect of WWTP size on grey water footprint—Czech Republic case study
Environmental Research Letters, 2020 The number of wastewater treatment plants (WWTPs) in the Czech Republic is increasing. Wastewater, which was previously disposed of in other ways (e.g. septic tanks, cesspits etc), is now entering the surface water (after treatment at a WWTP).
Libor Ansorge +2 more
doaj +1 more source
Internet of Things Security Detection Technology Based on Grey Association Decision Algorithm
Complexity, 2021 This paper analyzes the current real-time monitoring system based on grey-related IoT security sensors for the detection of risk factors in the production environment of the Internet of Things and proposes a design plan for the Internet of Things ...
Jie Chang +4 more
doaj +1 more source
Filtering high quality text for display on raster scan devices [PDF]
, 1981 Recently several investigators have studied the problem of displaying text characters on grey level raster scan displays. Despite arguments suggesting that grey level displays are equivalent to very high resolution bitmaps, the performance of grey level
Kajiya, J, Ullner, M
core +1 more source
Grey‐level context‐driven histogram equalisation
IET Image Processing, 2016 Histogram equalisation (HE), which redefines the distribution of grey‐levels in image, is an important step in image processing to enhance the image quality. Until now, numerous HE techniques have been proposed, among which major numbers have focused on solving the problem of how the grey‐levels in the histogram of an input image ...
Hyoungjun Jeon, Taewhan Kim
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Automated Quality Assurance Applied to Mammographic Imaging
EURASIP Journal on Advances in Signal Processing, 2002 Quality control in mammography is based upon subjective interpretation of the image quality of a test phantom. In order to suppress subjectivity due to the human observer, automated computer analysis of the Leeds TOR(MAM) test phantom is investigated ...
Anne Davis +4 more
doaj +1 more source
Fundamental Strings as Black Bodies [PDF]
, 1999 We show that the decay spectrum of massive excitations in perturbative string theories is thermal when averaged over the (many) initial degenerate states.
Alessandrini +9 more
core +3 more sources
Identifying dietary differences between Scotland and England:a rapid review of the literature [PDF]
, 2017 Rates of premature mortality have been higher in Scotland than in England since the 1970s. Given the known association of diet with chronic disease, the study objective was to identify and synthesise evidence on current and historical differences in food
Albani, Viviana +4 more
core +6 more sources