Results 21 to 30 of about 161,184 (203)
Learning-based Practical Smartphone Eavesdropping with Built-in Accelerometer
Network and Distributed System Security Symposium, 2020 —Motion sensors on current smartphones have been exploited for audio eavesdropping due to their sensitivity to vibrations. However, this threat is considered low-risk because of two widely acknowledged limitations: First, unlike microphones, motion ...
Zhongjie Ba +6 more
semanticscholar +1 more source
Nature Communications, 2019 Sleep is an essential state of decreased activity and alertness but molecular factors regulating sleep duration remain unknown. Through genome-wide association analysis in 446,118 adults of European ancestry from the UK Biobank, we identify 78 loci for ...
H. Dashti +31 more
semanticscholar +1 more source
Development of Dual-Axis MEMS Accelerometers for Machine Tools Vibration Monitoring
Applied Sciences, 2016 With the development of intelligent machine tools, monitoring the vibration by the accelerometer is an important issue. Accelerometers used for measuring vibration signals during milling processes require the characteristics of high sensitivity, high ...
Chih-Yung Huang, Jian-Hao Chen
doaj +1 more source
Research on Decomposition of Offset in MEMS Capacitive Accelerometer
Micromachines, 2021 In a MEMS capacitive accelerometer, there is an offset due to mechanical and electrical factors, and the offset would deteriorate the performance of the accelerometer. Reducing the offset from mechanism would benefit the improvement in performance.
Xianshan Dong +6 more
doaj +1 more source
Noise Reduction in the Accelerometer and Gyroscope Sensor with the Kalman Filter Algorithm
, 2021 Noise is unwanted signals in a communication or information system. Kalman filter has a good ability to handle noise. This study uses the Kalman filter algorithm that works to reduce noise at the accelerometer and gyroscope sensor output. Data were taken
Rio Ikhsan Alfian +2 more
semanticscholar +1 more source
A vibrating beam MEMS accelerometer for gravity and seismic measurements
Scientific Reports, 2020 This paper introduces a differential vibrating beam MEMS accelerometer demonstrating excellent long-term stability for applications in gravimetry and seismology.
Arif Mustafazade +8 more
semanticscholar +1 more source
A two degrees of freedom comb capacitive-type accelerometer with low cross-axis sensitivity
Journal of Mechanical Engineering and Sciences, 2019 In this paper, we report on a SOI-based comb capacitive-type accelerometer that senses acceleration in two lateral directions. The structure of the accelerometer was designed using a proof mass connected by four folded-beam springs, which are compliant ...
M. N. Nguyen +3 more
doaj +1 more source
Journal of Clinical Medicine, 2021 Physical behaviors (e.g., physical activity and sedentary behavior) have been the focus among many researchers in the biomedical and behavioral science fields.
Zan Gao +4 more
semanticscholar +1 more source
Multi-axis Response of a Thermal Convection-based Accelerometer
Micromachines, 2018 A thermal convection-based accelerometer was fabricated, and its characteristics were analyzed in this study. To understand the thermal convection of the accelerometer, the Grashof and Prandtl number equations were analyzed.
Jae Keon Kim +4 more
doaj +1 more source