نتایج جستجو برای: acoustic variable control

تعداد نتایج: 1630737  

Journal: :The Journal of the Acoustical Society of America 1992

Journal: :journal of research in health sciences 0
rostam golmohammadi omid giahi mohsen aliabadi ebrahim darvishi

background: noise pollution is currently a major health risk factor for workers in industries. the aim of this study was to investigate noise pollution and implement a control intervention plan for blast furnace in a steel industry. methods: the measurement of sound pressure level (spl) along with frequency analysis was done with the sound-level-meter cell-450 . personal noise exposure was perf...

Journal: :Nature communications 2014
Feng Li Paul Anzel Jinkyu Yang Panayotis G Kevrekidis Chiara Daraio

Electrical flow control devices are fundamental components in electrical appliances and computers; similarly, optical switches are essential in a number of communication, computation and quantum information-processing applications. An acoustic counterpart would use an acoustic (mechanical) signal to control the mechanical energy flow through a solid material. Although earlier research has demon...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1988
H Shibasaki R Kakigi K Oda S Masukawa

A patient with brain stem reflex myoclonus due to a massive midbrain infarct was studied electrophysiologically. Myoclonic jerks were elicited at variable latencies by tapping anywhere on the body or by acoustic stimuli, and mainly involved flexor muscles of upper extremities. The existence of convergence of somatosensory and acoustic inputs in the brain stem was suggested. This myoclonus seeme...

Journal: :Applied Physics Letters 2023

We propose a realization of transformation-based acoustic temporal cloak using an active closed-loop control approach to equivalent electromagnetic problem. Unlike the more common spatial cloaks, goal which is hiding fixed objects from detection, occurrence events during finite period time. In systems, in represent, for example, leakage signals transmission lines or optical fibers, cloaking sol...

Journal: :The Journal of the Acoustical Society of America 2015
Sipei Zhao Xiaojun Qiu Ian Burnett

This paper proposes a method of creating acoustic contrast control in an arc-shaped area using a linear loudspeaker array. The boundary of the arc-shaped area is treated as the envelope of the tangent lines that can be formed by manipulating the phase profile of the loudspeakers in the array. When compared with the existing acoustic contrast control method, the proposed method is able to genera...

Journal: :SIAM Journal of Applied Mathematics 2012
Qingwen Hu Wieslaw Krawcewicz Janos Turi

We obtain global stability lobes of two models of turning processes with inherit nonsmoothness due to the presence of state-dependent delays. In the process, we transform the models with state-dependent delays into systems of differential equations with both discrete and distributed delays and develop a procedure to determine analytically the global stability regions with respect to parameters....

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