Wenzhou University 2 articles published in JoVE Engineering Design and Optimization Strategies of a High-Performance Vented Box Xiaohui Feng1, Shujiao Pang1, Xiaoming Pan1, Zhenmu Chen1,2, Shanlei Wang1, Zhenzhe Li1 1College of Mechanical and Electrical Engineering, Wenzhou University, 2Institute of Laser and Optoelectronics Intelligent Manufacturing, Wenzhou University Here, we present the range analysis method to optimize the sample points generated by an orthogonal experimental design to ensure that fresh food can be stored in a vented box for a long time by regulating the airflow pattern. Engineering Measurement of the Hand Transmitted Vibration of the Human Hand Arm System During Operation of a Hand Tractor Shiqing Lu1, Rui Jiang2, Xinyi Xiao3, Yong Li1, Xia Huang1, Kun Song1, Changming Chen1, Jun Ding1 1School of Mechanical Engineering, Chongqing University of Technology, 2College of Mechanical and Electrical Engineering, Wenzhou University, 3Mechanical and Manufacturing Engineering, Miami University Here, we present a standardized method for measurement of the hand transmitted vibration from handles of a single-axle tractor with special reference to changes in grip force and vibration frequency.