Results 21 to 30 of about 65,982 (255)

Denoising MEMS accelerometer sensors based on L2‐norm total variation algorithm

Electronics Letters, 2017
A method for denoising accelerometer data based on the L2‐norm total variation (LTV) algorithm is presented. In order to collect accelerometer data, a wireless accelerometer sensor was developed that is directly connected to a central node. By benefiting
R. Abbasi‐Kesbi, A. Nikfarjam
doaj   +1 more source

Design and Implementation of a Micromechanical Silicon Resonant Accelerometer

Sensors, 2013
The micromechanical silicon resonant accelerometer has attracted considerable attention in the research and development of high-precision MEMS accelerometers because of its output of quasi-digital signals, high sensitivity, high resolution, wide dynamic ...
Libin Huang, Hui Yang, Yang Gao, Liye Zhao, Jinxing Liang   +4 more
doaj   +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

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

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

A Two‐Stage Questionnaire and Actigraphy Screening for iRBD in a Multicenter Retrospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid‐eye‐movement sleep behavior disorder is a prodromal marker of synucleinopathies. However, most cases remain undiagnosed due to the insufficient predictive value of questionnaires and limited access to confirmatory video‐polysomnography. We assessed a two‐stage screening strategy combining a brief questionnaire on rapid‐
Caleb A. Massimi, Giorgio Ricciardiello Mejia, Andre Metzger, Kang Hyun Ryu, Salonee Marwaha, Eva Grzegorczyk, Li Zhou, Eliana Jacobs, Boris Gilyadov, Claudia Kunney, Liqhwa Ncube, Ankit Parekh, Emmanuel Mignot, Fanny M. Elahi, Joseph Winer, Kathleen Poston, Andreas Brink‐Kjaer, Emmanuel H. During   +17 more
wiley   +1 more source

Association Between Neurofilament Light Chain and Real‐World Ambulatory Function in Progressive MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurofilament light chain (NfL) is a biomarker of neuroaxonal injury in multiple sclerosis (MS), yet associations with functional outcomes remain unclear. Longitudinal associations between serum NfL (sNfL) and daily step count (STEPS) from wearable devices were assessed in a large international progressive MS cohort.
Gabby B. Joseph, Megan McCune, Riley Bove, Ahmed Abdelhak, Bruce A. C. Cree, Valerie J. Block   +5 more
wiley   +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

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