Results 1 to 10 of about 10,491 (114)

Mine safety assessment using gray relational analysis and bow tie model. [PDF]

open access: yesPLoS ONE, 2018
Mine safety assessment is a precondition for ensuring orderly and safety in production. The main purpose of this study was to prevent mine accidents more effectively by proposing a composite risk analysis model.
Qingwei Xu, Kaili Xu
doaj   +2 more sources

An optimal selection method for exterior design schemes of subway trains based on multi-level gray relational analysis [PDF]

open access: yesScientific Reports, 2023
To make appropriate decisions in the evaluation phase of the exterior design of subway trains, an optimal selection method was proposed based on multi-level gray relational analysis. The exterior design factors of subway trains were analyzed to construct
Rui Zou   +5 more
doaj   +2 more sources

Watershed Drought and Ecosystem Services: Spatiotemporal Characteristics and Gray Relational Analysis

open access: yesISPRS International Journal of Geo-Information, 2021
This study explored the spatiotemporal characteristics of drought and ecosystem services (using soil conservation services as an example) in the YanHe Watershed, which is a typical water basin in the Loess Plateau of China, experiencing soil erosion ...
Jizhou Bai   +4 more
doaj   +3 more sources

Dynamic modulus prediction model and analysis of factors influencing asphalt mixtures using gray relational analysis methods

open access: yesJournal of Materials Research and Technology, 2022
In the design of asphalt pavement, the dynamic modulus of the asphalt mixture is an indispensable parameter used for checking the fatigue cracking and permanent deformation of the mixture. However, there are many parameters affecting the dynamic modulus.
Ming Zhang   +3 more
doaj   +3 more sources

Gray Relational Analysis Optimization for Coalbed Methane Blocks in Complex Conditions Based on a Best Worst and Entropy Method

open access: yesApplied Sciences, 2019
The uncertainty and complexity of the geological parameters of coalbed methane (CBM) reservoirs may result in the assignment of atypical exact values to a whole block.
Guofei Zhao   +4 more
doaj   +3 more sources

Sensory Evaluation of Low-Carbon City Tourism by Gray Relational Analysis [PDF]

open access: yesE3S Web of Conferences, 2021
The promotion of low-carbon city tourism is an important measure to reduce carbon emissions in various regions and realize sustainability. This research explores tourists’ sensory experience in the city’s low-carbon tourism economy, environment and ...
Cheng Yueh-Te   +3 more
doaj   +1 more source

Measuring the efficiency of public hospitals: A multistage data envelopment analysis in Fujian Province, China

open access: yesFrontiers in Public Health, 2023
ObjectiveThe present study aimed to evaluate the operational efficiency of public hospitals in Fujian Province and the factors responsible for the inefficiency of these hospitals and provide relevant suggestions for health policymakers in allocating ...
Mengya Sun   +4 more
doaj   +1 more source

Mechanical strength and shape accuracy optimization of polyamide FFF parts using grey relational analysis

open access: yesScientific Reports, 2022
This paper investigates the effect of different additive manufacturing process parameters such as chamber temperature, Printing temperature, layer thickness, and print speed on five essential parameters that characterize the manufactured components ...
Zohreh Shakeri   +3 more
doaj   +1 more source

UAV-Assisted Traffic Speed Prediction via Gray Relational Analysis and Deep Learning

open access: yesDrones, 2023
Accurate traffic prediction is crucial to alleviating traffic congestion in cities. Existing physical sensor-based traffic data acquisition methods have high transmission costs, serious traffic information redundancy, and large calculation volumes for ...
Yanliu Zheng   +3 more
doaj   +1 more source

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