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Fermatean Hesitant Fuzzy Prioritized Heronian Mean Operator and Its Application in Multi-Attribute Decision Making
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作者 chuan-yang ruan Xiang-Jing Chen Li-Na Han 《Computers, Materials & Continua》 SCIE EI 2023年第5期3203-3222,共20页
In real life,incomplete information,inaccurate data,and the preferences of decision-makers during qualitative judgment would impact the process of decision-making.As a technical instrument that can successfully handle... In real life,incomplete information,inaccurate data,and the preferences of decision-makers during qualitative judgment would impact the process of decision-making.As a technical instrument that can successfully handle uncertain information,Fermatean fuzzy sets have recently been used to solve the multi-attribute decision-making(MADM)problems.This paper proposes a Fermatean hesitant fuzzy information aggregation method to address the problem of fusion where the membership,non-membership,and priority are considered simultaneously.Combining the Fermatean hesitant fuzzy sets with Heronian Mean operators,this paper proposes the Fermatean hesitant fuzzy Heronian mean(FHFHM)operator and the Fermatean hesitant fuzzyweighted Heronian mean(FHFWHM)operator.Then,considering the priority relationship between attributes is often easier to obtain than the weight of attributes,this paper defines a new Fermatean hesitant fuzzy prioritized Heronian mean operator(FHFPHM),and discusses its elegant properties such as idempotency,boundedness and monotonicity in detail.Later,for problems with unknown weights and the Fermatean hesitant fuzzy information,aMADM approach based on prioritized attributes is proposed,which can effectively depict the correlation between attributes and avoid the influence of subjective factors on the results.Finally,a numerical example of multi-sensor electronic surveillance is applied to verify the feasibility and validity of the method proposed in this paper. 展开更多
关键词 Fermatean hesitant fuzzy set multi-attribute decision-making Heronian mean operator prioritized operator
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重症监护室中呼吸机相关性肺炎发生的相关因素影响的研究
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作者 李静 吴馨 +2 位作者 陈文台 孙传阳 阮雪燕 《中外医疗》 2019年第11期81-83,共3页
目的评估需要机械通气患者中呼吸机相关性肺炎(VAP)的发生率,以及年龄,性别和插管持续的时间等因素对VAP的影响。方法方便选择2015年1月—2017年1月284例来该院重症监护室(ICU)机械通气患者,其中有96例发生VAP;通过年龄、性别和呼吸插... 目的评估需要机械通气患者中呼吸机相关性肺炎(VAP)的发生率,以及年龄,性别和插管持续的时间等因素对VAP的影响。方法方便选择2015年1月—2017年1月284例来该院重症监护室(ICU)机械通气患者,其中有96例发生VAP;通过年龄、性别和呼吸插管的时间来评估患者出现呼吸机相关性肺炎(VAP)发生率。结果该研究中,共有96例患者发生VAP,占33.8%(96/284);其中男性50例(占VAP患者52.1%),占男性总体34.0%(50/147),女性46例(占VAP患者47.9%,P=0.129),占女性总体33.5%(46/137,P=0.46);与未发生VAP的患者相比,发生VAP患者的呼吸机插管持续时间显著延长;结果显示:发生VAP的患者平均通气时间为(8±4)d,而未发生VAP患者的平均通气时间为(4±2)d(P=0.005)。发生VAP患者的平均年龄(69±18)岁,未发生VAP患者(56±13)岁(P=0.019)。结论呼吸机支持持续时间和年龄与VAP的发生率显著相关。 展开更多
关键词 肺炎 呼吸机相关 重症监护室
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