The assessment of traffic accident risk based on grey relational analysis and fuzzy comprehensive evaluation method

Liu, Yaolong; Huang, Xiaoli; Jin, Dongping; Zhang, Huaming

doi:10.1007/s11069-017-2923-2

Cited by 63 publications

(32 citation statements)

References 5 publications

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“…Therefore, a new fuzzy comprehensive assessment method was developing to identify the comprehensive risk of sediment heavy metals efficiently. Based on the fuzzy comprehensive evaluation theory [ 46 , 47 ], the comprehensive risk was defined as follows:

where

represents potential ecological risk of heavy metals in sediment, which characterized by

;

represents bioaccessibility of heavy metals in sediment, which characterized by RAC; and f represents the comprehensive risk calculation functions.…”

Section: Methodsmentioning

confidence: 99%

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Xiao

Liu

et al. 2018

IJERPH

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Spatial concentrations and chemical fractions of heavy metals (Cr, Cu, Pb, Zn and Cd) in 16 sampling sites from the Honghu Lake were investigated using an atomic absorption spectrophotometer and optimized BCR (the European Community Bureau of Reference) three-stage extraction procedure. Compared with the corresponding probable effect levels (PELs), adverse biological effects of the studied five sediment metals decreased in the sequence of Cr > Cu > Zn > Pb > Cd. Geo-accumulation index (Igeo) values for Cr, Cu, Pb and Zn in each sampling site were at un-contamination level, while the values for Cd varied from un-contamination level to moderate contamination level. Spatially, the enrichment degree of Cd in lower part of the South Lake, the west part of the North Lake and the outlet were higher than the other parts of Honghu Lake. For metal chemical fractions, the proportions of the acid-extractable fraction of five metal contents were in the descending order: Cd, Cu, Zn, Pb and Cr. Cd had the highest bioaccessibility. Being the above indexes focused always on heavy metals’ total content or chemical fraction in deterministic assessment system, which may confuse decision makers, the fuzzy comprehensive risk assessment method was established based on PEI (Potential ecological risk index), RAC (Risk assessment code) and fuzzy theory. Average comprehensive risks of heavy metals in sediments revealed the following orders: Cd (considerable risk) > Cu (moderate risk) > Zn (low risk) > Pb > Cr. Thus, Cd and Cu were determined as the pollutants of most concern. The central part of South Honghu Lake (S4, S5, S6, S9, S12 and S14), east part of the North Honghu Lake (S1) and outlet of outlet of the Honghu Lake (S10) were recommended as the priority control areas. Specifically, it is necessary to pay more attention to S1, S4, S5, S6, S9 and S16 when decision making for their calculated membership values (probabilities) of adjacent risk levels quite close.

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where

represents potential ecological risk of heavy metals in sediment, which characterized by

;

represents bioaccessibility of heavy metals in sediment, which characterized by RAC; and f represents the comprehensive risk calculation functions.…”

Section: Methodsmentioning

confidence: 99%

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Xiao

Liu

et al. 2018

IJERPH

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“…A safety assessment is usually used to obtain the safety level of enterprises, and an assessment indicator system was established here, in which the sub-indicators mainly include educational training, safety input, dangerous and harmful factors control, hidden danger identification and security systems. After the subjective weights of the evaluated indicators were determined by analytic hierarchy process [25,26], and an appropriate safety situation was determined by experts for each evaluated indicator, the safety level of the casting workshop was preliminary assessed by the traditional fuzzy evaluation method [41]. However, the assessment process has two weaknesses: on the one hand, the fuzzy evaluation method does not reflect the randomness of assessment result; on the other hand, the subjective analytic hierarchy process does not take advantage of the objectivity of real data.…”

Section: Framework Of the Proposed Safety Assessment Methodsmentioning

confidence: 99%

“…The fuzzy evaluation method is derived from fuzzy mathematics, and the level of the project is evaluated by fuzzy transformation and maximum membership degree [41]. The detailed procedure of the fuzzy evaluation method is described below.…”

Section: Fuzzy Evaluation Methodsmentioning

confidence: 99%

Safety Assessment of Casting Workshop by Cloud Model and Cause and Effect–LOPA to Protect Employee Health

Fang

2020

IJERPH

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Safety assessment of a casting workshop will provide a clearer understanding of the important safety level required for a foundry. The main purpose of this study was to construct a composite safety assessment method to protect employee health using the cloud model and cause and effect–Layer of Protection Analysis (LOPA). In this study, the weights of evaluation indicators were determined using the subjective analytic hierarchy process and objective entropy weight method respectively. Then, to obtain the preference coefficient of the integrated weight more precisely, a new algorithm was proposed based on the least square method. Next, the safety level of the casting workshop was presented based on the qualitative and quantitative analysis of the cloud model, which realized the uncertainty conversion between qualitative concepts and their corresponding quantitative values, as well as taking the fuzziness and randomness into account; the validity of cloud model evaluation was validated by grey relational analysis. In addition, cause and effect was used to proactively identify factors that may lead to accidents. LOPA was used to correlate corresponding safety measures to the identified risk factors. 6 causes and 19 sub-causes that may contribute to accidents were identified, and 18 potential remedies, or independent protection layers (IPLs), were described as ways to protect employee health in foundry operations. A mechanical manufacturing business in Hunan, China was considered as a case study to demonstrate the applicability and benefits of the proposed safety assessment approach.

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“…The Fuzzy Comprehensive Evaluation (FCE) is a method based on fuzzy mathematics, which has good economic and social benefits. This method applies the principle of fuzzy relation synthesis and comprehensively evaluates the subordinate status of the things from multiple factors [46]. The steps of the FCE are shown below [47]:…”

Section: Fuzzy Comprehensive Evaluationmentioning

confidence: 99%

How Does the Control of Grain Purchase Price Affect the Sustainability of the National Grain Industry? One Empirical Study from China

Liu

Liang

et al. 2020

Sustainability

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As one of the most important grain protection policies in China, the minimum purchase price policy prevents the fluctuation of grain output and protects the interests of farmers by regulating the prices of major grain varieties. For developing countries with a shortage of agricultural resources, represented by China, an in-depth study on the implementation effect and public satisfaction of this policy is of great significance for promoting the sustainable development of the grain industry. Based on the interest demands of the government, farmers, grain enterprises and consumers, this paper constructs a policy satisfaction evaluation model based on the Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation. The research shows that the implementation effect of this policy has promoted the sustainable development of China’s grain in four aspects: improving farmers’ enthusiasm for planting, optimizing the structure of supply and demand, reducing the adverse impact of disasters, and ensuring the steady increase of output. However, due to the differences in natural resources and folk customs, the implementation effect of this policy varies in different regions.

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The assessment of traffic accident risk based on grey relational analysis and fuzzy comprehensive evaluation method

Cited by 63 publications

References 5 publications

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Safety Assessment of Casting Workshop by Cloud Model and Cause and Effect–LOPA to Protect Employee Health

How Does the Control of Grain Purchase Price Affect the Sustainability of the National Grain Industry? One Empirical Study from China

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