Results 41 to 50 of about 161,184 (203)

Analyzing the Effectiveness and Contribution of Each Axis of Tri-Axial Accelerometer Sensor for Accurate Activity Recognition

Italian National Conference on Sensors, 2020
Recognizing human physical activities from streaming smartphone sensor readings is essential for the successful realization of a smart environment. Physical activity recognition is one of the active research topics to provide users the adaptive services ...
A. R. Javed, M. U. Sarwar, Suleman Khan, C. Iwendi, Mohit Mittal, Neeraj Kumar   +5 more
semanticscholar   +1 more source

An accelerometer-based navigation system provides acetabular cup orientation accuracy comparable to that of computed tomography-based navigation during total hip arthroplasty in the supine position

Journal of Orthopaedic Surgery and Research, 2020
Background Inadequate acetabular component orientation is associated with postoperative impingement, dislocation, and accelerated polyethylene wear. Computed tomography (CT)-based navigation systems provide accuracy for total hip arthroplasty (THA) but ...
Tomonori Tetsunaga, Kazuki Yamada, Tomoko Tetsunaga, Tomoaki Sanki, Yoshi Kawamura, Toshifumi Ozaki   +5 more
doaj   +1 more source

Data Quality Assessment of Gravity Recovery and Climate Experiment Follow-On Accelerometer

Sensors
Accelerometers are mainly used to measure the non-conservative forces at the center of mass of gravity satellites and are the core payloads of gravity satellites.
Zongpeng Pan, Yun Xiao
doaj   +1 more source

Using open source accelerometer analysis to assess physical activity and sedentary behaviour in overweight and obese adults

BMC Public Health, 2018
Background Physical activity and sedentary behaviour are difficult to assess in overweight and obese adults. However, the use of open-source, raw accelerometer data analysis could overcome this.
Paul Innerd, Rory Harrison, Morc Coulson
doaj   +1 more source

Study protocol of the self‐monitoring activity program: Effects of activity on incident dementia

Alzheimer’s & Dementia: Translational Research & Clinical Interventions, 2019
Introduction Numerous studies have focused on nonpharmacological interventions on cognitive function and the effects of cognitive function on daily living.
Hiroyuki Shimada, Sangyoon Lee, Takehiko Doi, Seongryu Bae, Keitaro Makino, Ippei Chiba, Hidenori Arai   +6 more
doaj   +1 more source

Resonance Effect Decrease and Accuracy Increase of Piezoelectric Accelerometer Measurement by Appropriate Choice of Frequency Range

Shock and Vibration, 2018
A suitable piezoelectric accelerometer mathematical model is proposed to extract a relationship of motion relative frequency as a function of natural frequency.
Zine Ghemari, Saad Salah, Rabah Bourenane   +2 more
doaj   +1 more source

Pengembangan Mekanisme Change Detection Untuk Efisiensi Energi Pada Wifi-Based Indoor Positioning System

Jurnal ELTIKOM: Jurnal Teknik Elektro, Teknologi Informasi dan Komputer, 2020
Pengembangan mekanisme change detection mempunyai peranan penting terhadap Indoor Positioning System (IPS). Namun permasalahan yang masih umum dijumpai adalah konsumsi energi yang tinggi, karena proses WiFi scanning berjalan secara terus menerus.
Ade Hendi, Waskitho Wibisono, Ary Mazaharudin Shiddiqi   +2 more
doaj   +1 more source

Programmable synchronization enhanced MEMS resonant accelerometer

Microsystems & Nanoengineering, 2020
Acceleration measurement is of great significance due to its extensive applications in military/industrial fields. In recent years, scientists have been pursuing methods to improve the performance of accelerometers, particularly through seeking new ...
Liu Xu, Shudong Wang, Zhuangde Jiang, Xueyong Wei   +3 more
semanticscholar   +1 more source

A Method for Gravitational Apparent Acceleration Identification and Accelerometer Bias Estimation

IEEE Access, 2019
Accelerometer bias in an inertial navigation system (INS) is the key factor determining the navigation accuracy. Two methods, named separated calibration and system calibration are always used for acceleration bias calibration.
Xixiang Liu, Songbing Wang, Xiaole Guo, Wenqiang Yang, Guangfu Xu   +4 more
doaj   +1 more source

Comparison of self-report versus accelerometer – measured physical activity and sedentary behaviors and their association with body composition in Latin American countries

PLoS ONE, 2020
Background Most population-based studies from Latin America have used questionnaires to measure physical activity (PA) and sedentary behaviors (SB).
G. Ferrari, I. Kovalskys, M. Fisberg, G. Gómez, A. Rigotti, L. C. Sanabria, Martha Cecilia Yépez García, Rossina Gabriella Pareja Torres, M. Herrera-Cuenca, I. Zimberg, V. Guajardo, M. Pratt, C. Pires, R. Colley, D. Solé   +14 more
semanticscholar   +1 more source