Quaternion realization of aiming stabilization of the mobile weapon is considered.Gyro compassing combined with an inclinometer is used for the measurement of the initial chassis orientation in respect of the geograph...
supported by the National Key R&D Program of China(No.2017YFB0405503);the Youth Innovation Promotion Association of CAS(No.2016106);the Project of OFCMT(No.SKLD1703);the Key Project of Hebei Educational Committee(No.BJ2016048)
In this paper,an inclinometer based on a vertical pendulum and a fiber Bragg grating Fabry-Perot cavity (FBG-FP) is proposed. A low-damping rotation structure is used to reduce the mechanical frictions of the pendul...
The Hong Kong Polytechnic University through the group project "Fundamentals of Earthquake Engineering for Hong Kong"(4-ZZCD);the collaborative research project with Beijing University of Technology(4-ZZGD)
Estimation of lateral displacement and acceleration responses is essential to assess safety and serviceability of high-rise buildings under dynamic loadings including earthquake excitations. However, the measurement i...
The National Basic Research Program of China(Grant No.2010CB951804);The Strategy Guide for the Specific Task of the Chinese Academy of Sciences(Grant No.XDA10010403);The National Natural Science Foundation of China(Grant No.41375018);Special finance from the China Meteorological Administration(Grant No.GYHY200706034);The National Science and Technology Pillar Program(Grant No.2008BAC37B02)
Two kinds of measurement errors have been observed in the recently developed UAT-2 ultrasonic anemometer.One is the flow distortion produced by a"blocking effect",and the other is the angle of attack caused by the ver...
Measuring accuracy of inclinometer based on accelerometer is mainly influenced by the adopted accelerometer sensor.To improve the measuring accuracy of the inclinometer,the structure of the measuring system is given a...
Background:Overweight and obesity has become a serious public health problem in many parts of the world.Studies suggest that making small changes in daily activity levels such as"breaking-up"sedentary time(i.e.,standi...
Supported by Pennsylvania Athletic Trainers’ Society Research Grant,No.G0900028
AIM: To develop a better understanding of scapulohumeral rhythm during scapular plane shoulder elevation.METHODS: Thirteen healthy, college-aged subjects participated in this study. Subjects were free from any upper e...
supported by research grants of The Hong Kong Polytechnic University (Grant Nos. G-YE54 and 1-BB7U);supported by the State Key Fundamental Research (973) program project (Grant No. 2008CB425802);supported by a project entitled "Analysis of Geological and Mechanics Reasons Causing Damage of Bridge Structures during Wenchuan Earthquake and Recommendations for Reconstruction" (A/C No. 85G0)
Landslides and debris flows are typical geo-hazards which occur in hilly or mountainous regions. Debris flows may result from landslides. Geotechnical instrumentation plays an important role in monitoring and warning ...
The objective of this study was to assess the validity of the step count functions in Actical accelerometers and activPAL inclinometers, compared with pedome-ter-derived step count data. Firstly, directly observed ste...