Results 161 to 170 of about 1,807 (216)
Advanced Science, EarlyView.Palatable food alleviates stress and prevents anxiety. This study uncovers a dedicated neural pathway: dopamine release in the PFC activates D1R neurons, whose projections to the peri‐PVN engage a population of anxiolytic CRFR1 neurons. These neurons then inhibit stress‐induced hyperactivity of PVNCRF neurons, providing a circuit‐level explanation for ...
Yuchuan Hong +12 more
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Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks
Advanced Science, EarlyView.Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
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Neuromorphic Near‐Sensor and In‐Sensor Computing Enabled by Next‐Generation Material‐Based Sensors
Advanced Science, EarlyView.This Review presents a structural framework that classifies neuromorphic sensing into near‐sensor and in‐sensor architectures, clarifying physical coupling between sensing and computation. The framework connects neural and synaptic device functions with recent advances in optical, mechanical, and chemical sensing, compares energy consumption and ...
Su Yeon Jung +7 more
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Annual Reliability and Maintainability Symposium, 1984. Proceedings., 1985
This paper presents the General Electric Aerospace Control Systems Department (ACSD) approach to hardware screening using random vibration as a stimulus. The proposed techniques were developed to achieve a screening program that is cost effective and is supportable in dollar payoff with increased productivity.
John McGrath, William Kindig
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This paper presents the General Electric Aerospace Control Systems Department (ACSD) approach to hardware screening using random vibration as a stimulus. The proposed techniques were developed to achieve a screening program that is cost effective and is supportable in dollar payoff with increased productivity.
John McGrath, William Kindig
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Journal of Applied Mechanics, 1962
The calculated response of a uniform beam to stationary random excitation depends greatly on the dynamical model postulated, on the damping mechanism assumed, and on the nature of the random excitation process. To illustrate this, the mean square deflections, slopes, bending moments, and shear forces have been compared for four different dynamical ...
Crandall, S. H., Yildiz, Asim
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The calculated response of a uniform beam to stationary random excitation depends greatly on the dynamical model postulated, on the damping mechanism assumed, and on the nature of the random excitation process. To illustrate this, the mean square deflections, slopes, bending moments, and shear forces have been compared for four different dynamical ...
Crandall, S. H., Yildiz, Asim
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2015
Abstract This chapter introduces the terminology of random processes and their properties; stationarity, correlation function, power spectral density, and the Wiener–Khinchin theorem. The theory of linear, causual, and time-invariant systems is presented, as is and their characterization in terms of impulse response and frequency ...
Zach Liang, George C. Lee
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Abstract This chapter introduces the terminology of random processes and their properties; stationarity, correlation function, power spectral density, and the Wiener–Khinchin theorem. The theory of linear, causual, and time-invariant systems is presented, as is and their characterization in terms of impulse response and frequency ...
Zach Liang, George C. Lee
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Random Vibration of Systems with Viscoelastic Memory
Journal of Engineering Mechanics, 2004The equation of motion of linear dynamic systems with viscoelastic memory is usually expressed in a integrodifferential form, and its numerical solution is computationally heavy. In two recent papers, the writers suggested that the system memory be accounted for through the introduction of a number of additional internal variables.
Palmeri, Alessandro +3 more
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The Journal of the Acoustical Society of America, 1959
There is at present a great interest in random vibration as a special aspect of shock and vibration, especially in relation to effects on equipment. An attempt will be made to explain to members of the Acoustical Society of America (particularly those concerned with shock and vibration) what is meant by random vibration as opposed to other excitations ...
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There is at present a great interest in random vibration as a special aspect of shock and vibration, especially in relation to effects on equipment. An attempt will be made to explain to members of the Acoustical Society of America (particularly those concerned with shock and vibration) what is meant by random vibration as opposed to other excitations ...
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Random Vibration of the Rigid Block
1991The dynamic response of the rigid block oscillator to a Gaussian white noise excitation process is studied. The motion equation is linearized with the assumption of small displacements. The energy dissipation due to the inelastic impact is modeled as an impulsive process with arrivals occurring at displacement equal zero. The solution of the associated
GIANNINI, Renato, MASIANI R.
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Journal of Sound and Vibration, 2006
Abstract The paper considers a problem of random vibrations of swings—a pendulum with variable length. The goal of the paper is to estimate mean response energy of the system, subjected to external Gaussian white noise. The Energy Balance method is used to derive analytical results.
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Abstract The paper considers a problem of random vibrations of swings—a pendulum with variable length. The goal of the paper is to estimate mean response energy of the system, subjected to external Gaussian white noise. The Energy Balance method is used to derive analytical results.
openaire +1 more source