Application of a Cloud Model-Set Pair Analysis in Hazard Assessment for Biomass Gasification Stations

Abstract

Because a biomass gasification station includes various hazard factors, hazard assessment is needed and significant. In this article, the cloud model (CM) is employed to improve set pair analysis (SPA), and a novel hazard assessment method for a biomass gasification station is proposed based on the cloud model-set pair analysis (CM-SPA). In this method, cloud weight is proposed to be the weight of index. In contrast to the index weight of other methods, cloud weight is shown by cloud descriptors; hence, the randomness and fuzziness of cloud weight will make it effective to reflect the linguistic variables of experts. Then, the cloud connection degree (CCD) is proposed to replace the connection degree (CD); the calculation algorithm of CCD is also worked out. By utilizing the CCD, the hazard assessment results are shown by some normal clouds, and the normal clouds are reflected by cloud descriptors; meanwhile, the hazard grade is confirmed by analyzing the cloud descriptors. After that, two biomass gasification stations undergo hazard assessment via CM-SPA and AHP based SPA, respectively. The comparison of assessment results illustrates that the CM-SPA is suitable and effective for the hazard assessment of a biomass gasification station and that CM-SPA will make the assessment results more reasonable and scientific.

Application of a Cloud Model-Set Pair Analysis in Efficacy Assessment for Diabetic Ulcers

“…(2) Pairwise comparison matrix was used to judge both importance of criteria to middle factors and middle factors to the overall goal [16]. The matrix reflected the pairwise comparison and was compared on a scale of 1/9-9.…”

“…In the same, En′ is also a stochastic instantiation and fulfills EN'~N (En, He 2 ). Ex satisfies the following [8, 16]. T1μ=ex−Ex2/2En′2…”

“…Contribution of cloud drops outside [Ex-3En, Ex+3En] can be ignored. The definition is called the ‘3En rule' [16].…”

An Efficacy Predictive Method for Diabetic Ulcers Based on Higher‐Order Markov Chain‐Set Pair Analysis

“…e specific calculation method of the symptom weight was given in the literature [20]. e standardized values of each index were obtained after CM characteristic numbers and the cloud weight calculation.…”

基于理想点-可拓云模型的煤炭资源可持续力评价

“…运用改进的 AHP [20] ，综合专家打分调查结果，利用标度法建立判断矩阵，求得主观 权重值γ；运用熵权法 [21] (7) 计算得到评价等级特征值为3.069，可知评价 等级最接近Ⅲ级，通过云发生器计算各等级概率，可得评价结果如图 2 所示。根据 3En 原 则 [22] (可以忽略 [Ex-3En，Ex+3En] 区间以外云滴对煤炭资源可持续力等级的影响) ，可 表 1 煤炭资源可持续力评价指标体系 Table 1 The index system of sustainable capacity evaluation of coal resources Table 3 Weights…”