Unsupervised and supervised pattern recognition( PR)techniques are used to classify the acoustic emission( AE) data originating from the quasi-isotropic self-reinforced polyethylene composites,in order to identify the...Unsupervised and supervised pattern recognition( PR)techniques are used to classify the acoustic emission( AE) data originating from the quasi-isotropic self-reinforced polyethylene composites,in order to identify the various mechanisms in the multiangle-ply thermoplastic composites. Ultra-high molecular weight polyethylene / low density polyethylene( UHMWPE / LDPE)composites were made and tested under quasi-static tensile load. The failure process was monitored by the AE technique. The collected AE signals were classified by unsupervised and supervised PR techniques, respectively. AE signals were clustered with unsupervised PR scheme automatically and mathematically. While in the supervised PR scheme,the labeled AE data from simple lay-up UHMWPE / LDPE laminates were utilized as the reference data.Comparison was drawn according to the analytical results. Fracture surfaces of the UHMWPE / LDPE specimens were observed by a scanning electron microscope( SEM) for some physical support. By combining both classification results with the observation results,correlations were established between the AE signal classes and their originating damage modes. The comparison between the two classifying schemes showed a good agreement in the main damage modes and their failure process. It indicates both PR techniques are powerful for the complicated thermoplastic composites. Supervised PR scheme can lead to a more precise classification in that a suitable reference data set is input.展开更多
Modern ecological breeding has the characteristics of protecting the ecological environment,health,nutrition,delicious,and so on.In the ecological breeding of traditional breeding chicken,using non antibiotic breeding...Modern ecological breeding has the characteristics of protecting the ecological environment,health,nutrition,delicious,and so on.In the ecological breeding of traditional breeding chicken,using non antibiotic breeding,traditional Chinese medicine and other breeding technologies can not only obtain green,non-harmful and safe food products,but also reduce the cost of farmers and provide breeding efficiency This is a sustainable development path.This paper gave a brief overview of this field.展开更多
目的探讨基于舒适化浅镇静策略(Early Comfort Using Analgesia,Minimal Sedatives and Maximal Hu⁃mane Care,eCASH)理念的镇静镇痛护理模式在重症脑外伤患者术后应用的价值。方法随机选取2021年1月—2023年1月福建医科大学附属协和医...目的探讨基于舒适化浅镇静策略(Early Comfort Using Analgesia,Minimal Sedatives and Maximal Hu⁃mane Care,eCASH)理念的镇静镇痛护理模式在重症脑外伤患者术后应用的价值。方法随机选取2021年1月—2023年1月福建医科大学附属协和医院收治的重症脑外伤患者90例为研究对象,按随机数表法分为对照组和镇静镇痛护理模式组,每组45例。对照组患者接受临床重症脑外伤手术患者常规护理,镇静镇痛护理模式组患者在常规护理基础上加入基于eCASH理念的镇静镇痛护理模式。对比两组患者的镇静镇痛效果、生活质量。结果干预1周后,镇静镇痛护理模式组患者疼痛行为量表的面部表情、上肢活动、呼吸机顺应性评分值均低于对照组患者(P均<0.05)。出院当日,镇静镇痛护理模式组生活质量综合评定量表中躯体功能(16.11±2.54)分、生理状态(17.74±2.04)分、心理功能(15.11±2.12)分、社会功能(16.71±2.88)分均高于对照组(t=4.580、6.548、7.450、5.838,P均<0.05)。结论基于eCASH理念的镇静镇痛护理模式应用于重症脑外伤手术患者中,可有效提高镇痛镇静效果、促进术后康复、提升生活质量。展开更多
基金Scientific Research Foundation of Guangdong Polytechnic,China(No.K2010201)
文摘Unsupervised and supervised pattern recognition( PR)techniques are used to classify the acoustic emission( AE) data originating from the quasi-isotropic self-reinforced polyethylene composites,in order to identify the various mechanisms in the multiangle-ply thermoplastic composites. Ultra-high molecular weight polyethylene / low density polyethylene( UHMWPE / LDPE)composites were made and tested under quasi-static tensile load. The failure process was monitored by the AE technique. The collected AE signals were classified by unsupervised and supervised PR techniques, respectively. AE signals were clustered with unsupervised PR scheme automatically and mathematically. While in the supervised PR scheme,the labeled AE data from simple lay-up UHMWPE / LDPE laminates were utilized as the reference data.Comparison was drawn according to the analytical results. Fracture surfaces of the UHMWPE / LDPE specimens were observed by a scanning electron microscope( SEM) for some physical support. By combining both classification results with the observation results,correlations were established between the AE signal classes and their originating damage modes. The comparison between the two classifying schemes showed a good agreement in the main damage modes and their failure process. It indicates both PR techniques are powerful for the complicated thermoplastic composites. Supervised PR scheme can lead to a more precise classification in that a suitable reference data set is input.
基金Supported by International Science and Technology Innovation Cooperation Project of Sichuan Province(2020YFH0202)Key Research and Development Project of Science and Technology Plan of Liangshan Prefecture(20ZDYF0002)。
文摘Modern ecological breeding has the characteristics of protecting the ecological environment,health,nutrition,delicious,and so on.In the ecological breeding of traditional breeding chicken,using non antibiotic breeding,traditional Chinese medicine and other breeding technologies can not only obtain green,non-harmful and safe food products,but also reduce the cost of farmers and provide breeding efficiency This is a sustainable development path.This paper gave a brief overview of this field.
文摘目的探讨基于舒适化浅镇静策略(Early Comfort Using Analgesia,Minimal Sedatives and Maximal Hu⁃mane Care,eCASH)理念的镇静镇痛护理模式在重症脑外伤患者术后应用的价值。方法随机选取2021年1月—2023年1月福建医科大学附属协和医院收治的重症脑外伤患者90例为研究对象,按随机数表法分为对照组和镇静镇痛护理模式组,每组45例。对照组患者接受临床重症脑外伤手术患者常规护理,镇静镇痛护理模式组患者在常规护理基础上加入基于eCASH理念的镇静镇痛护理模式。对比两组患者的镇静镇痛效果、生活质量。结果干预1周后,镇静镇痛护理模式组患者疼痛行为量表的面部表情、上肢活动、呼吸机顺应性评分值均低于对照组患者(P均<0.05)。出院当日,镇静镇痛护理模式组生活质量综合评定量表中躯体功能(16.11±2.54)分、生理状态(17.74±2.04)分、心理功能(15.11±2.12)分、社会功能(16.71±2.88)分均高于对照组(t=4.580、6.548、7.450、5.838,P均<0.05)。结论基于eCASH理念的镇静镇痛护理模式应用于重症脑外伤手术患者中,可有效提高镇痛镇静效果、促进术后康复、提升生活质量。
