Results 21 to 30 of about 11,158,151 (301)

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

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

Dynamic data-flow testing [PDF]

open access: yesCompanion Proceedings of the 36th International Conference on Software Engineering, 2014
Data-flow testing techniques have long been discussed in the literature, yet to date they are still of little practical relevance. The applicability of data-flow testing is limited by the complexity and the imprecision of the approach: writing a test suite that satisfy a data-flow criterion is challenging due to the presence of many test objectives ...
openaire   +4 more sources

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

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

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

Safety; ROPS Test

open access: yes, 1970
A Tractor and the testweight frame ready before a SIDE IMPACT TEST. The tractor is lashed down and the impacting weight is raised. The test was conducted at Mead, NE (Ag Eaxperiment Station) It was found that these "dynamic" tests were difficult to make ...
Nebraska Tractor Test Laboratory
core   +3 more sources

A Passive Pressure Sensor Fabricated by Post-Fire Metallization on Zirconia Ceramic for High-Temperature Applications

open access: yesMicromachines, 2014
A high-temperature pressure sensor realized by the post-fire metallization on zirconia ceramic is presented. The pressure signal can be read out wirelessly through the magnetic coupling between the reader antenna and the sensor due to that the sensor is ...
Tao Luo   +6 more
doaj   +1 more source

Testing and Analysis of Surrounding Buildings during the Operation of Seismic Simulation Shaking Table

open access: yesBuildings, 2023
This paper focuses on the transmission of vibration response of the seismic simulation shaking table system at Southeast University, and analyzes the effect of this response on the surrounding building. The location of the building is less than 10 m away
Wenbo Xie   +4 more
doaj   +1 more source

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