Results 21 to 30 of about 724,033 (296)

An Intelligence Optimized Rolling Grey Forecasting Model Fitting to Small Economic Dataset

open access: yesAbstract and Applied Analysis, 2014
Grey system theory has been widely used to forecast the economic data that are often highly nonlinear, irregular, and nonstationary. The size of these economic datasets is often very small.
Li Liu, Qianru Wang, Ming Liu, Lian Li
doaj   +1 more source

Systematic Digitized Treatment of Engineering Line-Diagrams [PDF]

open access: yes, 2015
YesIn engineering design, there are many functional relationships which are difficult to express into a simple and exact mathematical formula. Instead they are documented within a form of line graphs (or plot charts or curve diagrams) in engineering ...
Qi, Hong Sheng   +4 more
core   +1 more source

What is the relationship between lightness and perceived illumination [PDF]

open access: yes, 2019
Surface reflectance and illumination level, which are confounded in the retinal image, must be disentangled by the visual system and a theory of lightness must explain how.
Gilchrist, Alan, Soranzo, Alessandro
core   +1 more source

A Grey-System Theory Approach to Assess the Safety of Gas-Supply Systems

open access: yesEnergies, 2022
The continuity of gas-supply service is a major concern for all gas-supply operators. A safety review of a gas-supply system could help to mitigate the potential repercussions of supply disruptions. Disruptions occur at random due to systemic failures in
Dawid Szpak   +3 more
doaj   +1 more source

Hospital Location Selection with Grey System Theory [PDF]

open access: yesEuropean Journal of Economics and Business Studies, 2016
The facility location selection is one of the most important decisions for investors and entrepreneurs. It is a strategic issue besides often decides the fate of such a facility. In this kind of strategic decisions, decision makers should take into account various objectives and criteria and the process of location selection is inherently complicated ...
Mehmet Fatih Demiral, Halil Şen
openaire   +1 more source

Prediction of Infectious Disease to Reduce the Computation Stress on Medical and Health Care Facilitators

open access: yesMathematics, 2023
Prediction of the infectious disease is a potential research area from the decades. With the progress in medical science, early anticipation of the disease spread becomes more meaningful when the resources are limited. Also spread prediction with limited
Shalini Shekhawat   +3 more
doaj   +1 more source

Grey Mathematics Model for Atmospheric Pollution Based on Numerical Simulation

open access: yesChemical Engineering Transactions, 2018
Urban air environment is a complex system with multiple objectives, multi levels and multiple factors. In this paper, the grey analysis of atmospheric environmental system is carried out, and the grey differential equation of air pollution is established,
Yunxiao Bai
doaj   +1 more source

R-fuzzy sets and grey system theory [PDF]

open access: yes2016 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2016
This paper investigates the use of grey theory to enhance the concept of an R-fuzzy set, with regards to the precision of the encapsulating set of returned significance values. The use of lower and upper approximations from rough set theory, allow for an R-fuzzy approach to encapsulate uncertain fuzzy membership values; both collectively generic and ...
Singh Khuman, Arjab   +3 more
openaire   +2 more sources

Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities [PDF]

open access: yes, 2017
The temporal resolution of sub-relativistic ultrafast electron diffraction (UED) is generally limited by radio frequency (RF) phase and amplitude jitter of the RF lenses that are used to compress the electron pulses.
Franssen, J. G. H., Luiten, O. J.
core   +6 more sources

Really useful knowledge? Critical management education in the UK and the US [PDF]

open access: yes, 2007
This article reviews the Critical Management Education (CME) literature produced since 1995 and compares its development in the United Kingdom with that of the United States.
Perriton, Linda
core   +1 more source

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