传统大学生社会实践将重心设置在“实施过程”层面,即通过社会实践范围界定、资源供应、项目设计及方法指导等一系列举措,将大学生引入到特定的社会实践场景,按部就班地执行社会实践任务。在这种因果思维模式下,行动过程与目标结果往往...传统大学生社会实践将重心设置在“实施过程”层面,即通过社会实践范围界定、资源供应、项目设计及方法指导等一系列举措,将大学生引入到特定的社会实践场景,按部就班地执行社会实践任务。在这种因果思维模式下,行动过程与目标结果往往发生不对称现象,换言之,即便完整、严格地执行社会实践过程,大学生也未必能达到社会实践预设培育效果。OBE(Outcome based education)理念强调通过“逆向思维”分析教学活动,也就是“成果导向”或“目标导向”,教师应将要达到的教育顶峰成果作为教学设计起点,逆向反推整个社会实践实施过程,再有的放矢地提供资源、调整手段、安排步骤等,这有助于教师洞悉大学生社会实践的全过程、掌握全要素。展开更多
Wearable devices have great application potential in the next generation of smart portable electronics,especially in the fields of medical monitoring,soft robotics,artificial intelligence,and human-machine interfaces....Wearable devices have great application potential in the next generation of smart portable electronics,especially in the fields of medical monitoring,soft robotics,artificial intelligence,and human-machine interfaces.Piezoelectric flexible strain sensors are key components of wearable devices.However,existing piezoelectric flexible strain sensors have certain limitations in weak signal monitoring due to their large modulus and low sensitivity.To solve this problem,the concept of Kirigami(paper-cutting)was introduced in this study to design the sensor structure.By comparing the Kirigami structures of different basic structures,the serpentine structure was determined as the basic configuration of the sensor.The serpentine structure not only provides excellent tensile properties,but also significantly improves the sensitivity of the sensor,which performs well in monitoring weak signals.On this basis,the adhesion properties of the flexible sensor were analyzed and tested,and the optimal ratio of the substrate was selected for preparation.In addition,a low-cost and rapid prototyping process for stretchable patches was established in this study.Using this technology,we prepared the sensor device and tested its performance.Finally,we successfully developed a flexible sensor with a sensitivity of 0.128 mV/μɛand verified its feasibility for wrist joint motion monitoring applications.This result opens up new avenues for the recovery care of tenosynovitis patients after surgery.展开更多
文摘传统大学生社会实践将重心设置在“实施过程”层面,即通过社会实践范围界定、资源供应、项目设计及方法指导等一系列举措,将大学生引入到特定的社会实践场景,按部就班地执行社会实践任务。在这种因果思维模式下,行动过程与目标结果往往发生不对称现象,换言之,即便完整、严格地执行社会实践过程,大学生也未必能达到社会实践预设培育效果。OBE(Outcome based education)理念强调通过“逆向思维”分析教学活动,也就是“成果导向”或“目标导向”,教师应将要达到的教育顶峰成果作为教学设计起点,逆向反推整个社会实践实施过程,再有的放矢地提供资源、调整手段、安排步骤等,这有助于教师洞悉大学生社会实践的全过程、掌握全要素。
基金supported by National Natural Science Foundation of China(Nos.62301509,62304209)Key Research and Development Program of Shanxi Province(No.202302030201001)Fundamental Research Program of Shanxi Province(Nos.202203021222079,0210302123203,202103021223185).
文摘Wearable devices have great application potential in the next generation of smart portable electronics,especially in the fields of medical monitoring,soft robotics,artificial intelligence,and human-machine interfaces.Piezoelectric flexible strain sensors are key components of wearable devices.However,existing piezoelectric flexible strain sensors have certain limitations in weak signal monitoring due to their large modulus and low sensitivity.To solve this problem,the concept of Kirigami(paper-cutting)was introduced in this study to design the sensor structure.By comparing the Kirigami structures of different basic structures,the serpentine structure was determined as the basic configuration of the sensor.The serpentine structure not only provides excellent tensile properties,but also significantly improves the sensitivity of the sensor,which performs well in monitoring weak signals.On this basis,the adhesion properties of the flexible sensor were analyzed and tested,and the optimal ratio of the substrate was selected for preparation.In addition,a low-cost and rapid prototyping process for stretchable patches was established in this study.Using this technology,we prepared the sensor device and tested its performance.Finally,we successfully developed a flexible sensor with a sensitivity of 0.128 mV/μɛand verified its feasibility for wrist joint motion monitoring applications.This result opens up new avenues for the recovery care of tenosynovitis patients after surgery.
