Results 11 to 20 of about 1,135,072 (266)

Design of table tennis and badminton movement state recognition watch

open access: yesDianzi Jishu Yingyong, 2018
In order to make up for the lack of existing products on the market for identifying table tennis and badminton sports state, this paper designs a racket wrist which can identify these two kinds of movement in a variety of state watches.
Guo Fuzhi   +4 more
doaj   +1 more source

The coupling of scattered-bend loss in POF based the displacement measurement sensor

open access: yesSensing and Bio-Sensing Research, 2020
In this paper, a displacement sensor is proposed based on the coupling of scattering loss during the bending of fiber. We adopted a twisted structure of two fiber to couple the scattered loss which caused by bending.
Abdul Ghaffar   +7 more
doaj   +1 more source

Dynamic specification tests for dynamic factor models [PDF]

open access: yesJournal of Applied Econometrics, 2019
SummaryWe derive computationally simple expressions for score tests of misspecification in parametric dynamic factor models using frequency domain techniques. We interpret those diagnostics as time domain moment tests which assess whether certain autocovariances of the smoothed latent variables match their theoretical values under the null of correct ...
Fiorentini, Gabriele, Sentana, Enrique
openaire   +3 more sources

Capacitive Pressure Sensor With Integrated Signal-Conversion Circuit for High-Temperature Applications

open access: yesIEEE Access, 2020
In this paper, a capacitive pressure sensor for high-temperature application is proposed. This sensor includes three parts: a capacitive pressure-sensitive chip fabricated from green tapes using lamination technology, a C-V conversion circuit fabricated ...
Chen Li   +5 more
doaj   +1 more source

An Insertable Passive LC Pressure Sensor Based on an Alumina Ceramic for In Situ Pressure Sensing in High-Temperature Environments

open access: yesSensors, 2015
Pressure measurements in high-temperature applications, including compressors, turbines, and others, have become increasingly critical. This paper proposes an implantable passive LC pressure sensor based on an alumina ceramic material for in situ ...
Jijun Xiong   +7 more
doaj   +1 more source

A Novel Detachable, Reusable, and Versatile Acoustic Tweezer Manipulation Platform for Biochemical Analysis and Detection Systems

open access: yesBiosensors, 2022
Multifunctional, integrated, and reusable operating platforms are highly sought after in biochemical analysis and detection systems. In this study, we demonstrated a novel detachable, reusable acoustic tweezer manipulation platform that is flexible and ...
Yukai Liu   +9 more
doaj   +1 more source

Benefits and Challenges of Over-Actuated Excitation Systems

open access: yesShock and Vibration, 2010
This paper provides a comprehensive discussion on the benefits and technical challenges of controlling over-determined and over-actuated excitation systems ranging from 1-DOF to 6-DOF.
Norman Fitz-Coy   +2 more
doaj   +1 more source

New Research on MEMS Acoustic Vector Sensors Used in Pipeline Ground Markers

open access: yesSensors, 2014
According to the demands of current pipeline detection systems, the above-ground marker (AGM) system based on sound detection principle has been a major development trend in pipeline technology.
Xiaopeng Song   +5 more
doaj   +1 more source

Review of Research Status and Development Trends of Wireless Passive LC Resonant Sensors for Harsh Environments

open access: yesSensors, 2015
Measurement technology for various key parameters in harsh environments (e.g., high-temperature and biomedical applications) continues to be limited. Wireless passive LC resonant sensors offer long service life and can be suitable for harsh environments ...
Chen Li   +6 more
doaj   +1 more source

Research on Dynamic Test of Hyper-Velocity Impact Penetration Acceleration Signal

open access: yesIEEE Access, 2020
In recent years, with the development of hyper-velocity weapon, the research focus of penetration effect has switched gradually from high-velocity to hyper-velocity, with insufficient studies on penetration effect and its internal mechanism. Besides, the
Debiao Zhang   +6 more
doaj   +1 more source

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