目的对鼻咽癌放疗后吞咽障碍患者分别实施Shaker训练和下颏抗阻力(chin tuck against resistance,CTAR)训练,分析三种训练对患者的影响。方法选择2017年2月—2019年2月厦门大学附属第一医院收治的84例鼻咽癌内镜手术后化疗患者为研究对...目的对鼻咽癌放疗后吞咽障碍患者分别实施Shaker训练和下颏抗阻力(chin tuck against resistance,CTAR)训练,分析三种训练对患者的影响。方法选择2017年2月—2019年2月厦门大学附属第一医院收治的84例鼻咽癌内镜手术后化疗患者为研究对象,按随机数字表法将患者分为对照组、Shaker组以及CTAR练组,每组各28例。三组均进行常规吞咽训练,Shaker组联合Shaker训练,CTAR组联合CTAR训练。分析三组患者吞咽能力、日常生活质量、康复治疗效果以及并发症情况。结果干预前三组患者电视透视检查(video fluoroscopy swallowing study,VFSS)评级、功能性经口摄食量表(functional oral intake scale,FOIS)评级以及吞咽障碍特异性生活质量量表(swallowing-quality of life,SWAL-QOL)评分比较,差异无统计学意义(P>0.05)。干预后Shaker组和CTAR组患者VFSS评分低于对照组,FOIS和SWAL-QOL评分高于对照组,差异有统计学意义(P<0.05)。Shaker组和CTAR组之间各评分比较,差异无统计学意义(P>0.05)。对照组患者治疗总有效率为71.43%,Shaker组患者治疗总有效率为92.86%,CTAR组患者治疗总有效率为96.43%。对照组的治疗有效率明显低于Shaker组和CTAR组,差异有统计学意义(P<0.05)。Shaker组和CTAR组治疗总有效率比较,差异无统计学意义(P>0.05)。对照组、Shaker组以及CTAR组并发症发生率分别为32.14%、7.14%以及3.57%。对照组明显高于Shaker组和CTAR组,差异有统计学意义(P<0.05);Shaker组与CTAR组比较,差异无统计学意义(P>0.05)。结论Shaker和CTAR训练均能有效缓解鼻咽癌放疗后患者的吞咽障碍症状,提高摄食功能,并发症较少,改善患者预后。展开更多
By means of Delta-function & unit step function to express the force of solid particle on plane inertial shaker's screen, an mathematical model of the differential equation type was set up and solved. Accordin...By means of Delta-function & unit step function to express the force of solid particle on plane inertial shaker's screen, an mathematical model of the differential equation type was set up and solved. According to analysis of the solution, the relation is given between the throw period & displacement with the parameters of shaker design & solid particle. The method of numerical value calculation & analysis for the relation is given too.展开更多
已建结构的动力测试是了解其实际动力性能、提升建模和计算分析精度、检测结构损伤情况的重要手段.提出了 Human Shaker(HS)的方法,利用人的行走、跳跃和摆动等运动实现对结构的激振,由智能可穿戴设备得到激振荷载和结构响应,并由此识...已建结构的动力测试是了解其实际动力性能、提升建模和计算分析精度、检测结构损伤情况的重要手段.提出了 Human Shaker(HS)的方法,利用人的行走、跳跃和摆动等运动实现对结构的激振,由智能可穿戴设备得到激振荷载和结构响应,并由此识别结构的模态参数.首先建立了由特征点加速度重构人致激振荷载的方法,以及利用可穿戴设备的HS应用步骤,进而以横向摆动为例通过实验确定了特征点位置及其对应的质量参与修正系数.最后将HS技术应用于某实际结构的动力测试和模态参数识别,结果表明,HS技术可以方便快捷地用于中小型结构的模态测试.展开更多
This work aims to improve the setup of an electrodynamic triaxial shaker prototype with respect to its usability for the automotive industry.Triaxial shakers being capable of meeting the corresponding requirements are...This work aims to improve the setup of an electrodynamic triaxial shaker prototype with respect to its usability for the automotive industry.Triaxial shakers being capable of meeting the corresponding requirements are not available as standard test equipment.Modifications on the fixture have to be conducted in order to ensure an effective control.The first part of the work is the qualitative description of the system behavior.Therefore,the shaker is treated as a black box.The second part is the modification of the test fixture in order to handle the resonances of the shaker,which is elementary for its usage.A setup is found,that improves testing within the desired frequency range.Thereby,acceleration levels are considered as well as excitation phases and coherences.The proposed setup is used for an exemplary specimen with two different control scenarios.Conclusions are then drawn about the usage of triaxial shakers.展开更多
文摘By means of Delta-function & unit step function to express the force of solid particle on plane inertial shaker's screen, an mathematical model of the differential equation type was set up and solved. According to analysis of the solution, the relation is given between the throw period & displacement with the parameters of shaker design & solid particle. The method of numerical value calculation & analysis for the relation is given too.
文摘已建结构的动力测试是了解其实际动力性能、提升建模和计算分析精度、检测结构损伤情况的重要手段.提出了 Human Shaker(HS)的方法,利用人的行走、跳跃和摆动等运动实现对结构的激振,由智能可穿戴设备得到激振荷载和结构响应,并由此识别结构的模态参数.首先建立了由特征点加速度重构人致激振荷载的方法,以及利用可穿戴设备的HS应用步骤,进而以横向摆动为例通过实验确定了特征点位置及其对应的质量参与修正系数.最后将HS技术应用于某实际结构的动力测试和模态参数识别,结果表明,HS技术可以方便快捷地用于中小型结构的模态测试.
文摘This work aims to improve the setup of an electrodynamic triaxial shaker prototype with respect to its usability for the automotive industry.Triaxial shakers being capable of meeting the corresponding requirements are not available as standard test equipment.Modifications on the fixture have to be conducted in order to ensure an effective control.The first part of the work is the qualitative description of the system behavior.Therefore,the shaker is treated as a black box.The second part is the modification of the test fixture in order to handle the resonances of the shaker,which is elementary for its usage.A setup is found,that improves testing within the desired frequency range.Thereby,acceleration levels are considered as well as excitation phases and coherences.The proposed setup is used for an exemplary specimen with two different control scenarios.Conclusions are then drawn about the usage of triaxial shakers.
