Results 231 to 240 of about 453,506 (286)

Neuromorphic Optical Tracking and Imaging of Randomly Moving Targets Through Dynamic Dense Scattering Media

open access: yesAdvanced Science, EarlyView.
Vision begins not with images but with change: the retina fires only when something moves, handing the brain a stream of spikes. A neuromorphic imaging system adopts the same strategy—an event sensor that sees like the retina, a spiking network that thinks like the brain—to track and reconstruct fully randomly moving targets through tissue (phantom ...
Ning Zhang, Arto Nurmikko
wiley   +1 more source

Heat‐to‐Electricity Conversion Using Barium Strontium Titanate Multilayer Capacitors

open access: yesAdvanced Science, EarlyView.
Lead‐free barium strontium titanate multilayer capacitors convert waste heat into electricity via the Olsen electro‐thermodynamic cycle. These capacitors achieve an energy density of 3.7 J cm−3, comparable to the performance of lead‐based ceramics. Their high dielectric strength and broad operating temperature window below 100°C make them practical for
Fan Ni   +10 more
wiley   +1 more source

Neuromorphic Devices and Computing for Sensing, Memory, and Control

open access: yesAdvanced Science, EarlyView.
This review introduces neuromorphic devices made from diverse materials. These devices mimic neuronal functions and architectures and, when integrated with artificial or biological computing, can form closed loops with neurons for pressure, optical, acoustic, and biochemical sensing and modulation.
Zhengguang Zhu   +2 more
wiley   +1 more source

Tuning fork test.

open access: yesPractica Oto-Rhino-Laryngologica, 1991
openaire   +2 more sources

The Tuning Fork Revisited

Diabetic Medicine, 1990
The performance of the Rydel‐Seiffer graduated tuning fork was examined in healthy subjects and in various groups of diabetic patients in order to evaluate its efficacy for identifying patients whose loss of vibration sensation may expose them to the risk of foot injury. Vibration perception score measured with the tuning fork declined with age (p <
J P Assal, J Ph Assal
exaly   +4 more sources

Quartz Tuning Fork Biosensor

Biosensors and Bioelectronics, 2002
The use of quartz tuning forks for biosensor applications is investigated. The basis of the sensor is to coat the tuning fork surfaces with specific biomolecules and measure subsequent mass loading from the selective binding of complementary analytes. Two experimental set-ups are evaluated, direct mechanical excitation and self-excitation.
Xiaodi Su
exaly   +3 more sources

Tuning forks in silicon

IEEE Micro Electro Mechanical Systems, , Proceedings, 'An Investigation of Micro Structures, Sensors, Actuators, Machines and Robots', 2003
The authors describe microfabricated tuning forks in silicon, which are excited electrodynamically. The pressure dependence of the resonance frequency and the Q-factor was measured by an interferometer over a range of pressure 1 mu bar to 2 bar. It is shown that micromachined structures in silicon have Q-factors which are comparable to those of similar
Buser, R., de Rooij, N. F.
openaire   +2 more sources

Tuning Forks: The Problem Of Striking

The Journal of Laryngology & Otology, 1989
Tuning fork tests have accompanied us from the beginning of otology. Various methods of striking have been used during the century and the efforts to attain standardization appear to have been forgotten since audiology became available. The article reviews the history of the standardization and throws a new light on the production of overtones and air,
J. Samuel, E. Eitelberg, Ing. Habil
openaire   +2 more sources

TUNING FORK TESTS

Archives of Otolaryngology - Head and Neck Surgery, 1972
To the Editor .—Upon reading the excellent paper "Tuning Fork Tests in Modern Otology," by Sheehy, Gardner, and Hambley (Arch Otolaryng 94: 132, 1971), I was reminded of a bone-conduction test which provides the same basic information as the Weber, but which decreases the tendency to anticipate the sound in the "better" ear.
openaire   +2 more sources

Tuning fork decay

The Laryngoscope, 1979
Abstract Tuning fork tests are used routinely by many otologists. A different group of otologists find the tests inconsistent and unreliable. This controversy has probably developed because the audiometer has replaced the tuning fork in hearing measurement. As a result, the art of use of the tuning fork is poorly learned.
openaire   +2 more sources

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