Results 141 to 150 of about 11,947 (254)

Cerebral haemodynamic responses to inspiratory muscle work

Experimental Physiology, EarlyView.
Abstract Fatiguing inspiratory work has been shown to evoke a sympathetically mediated reflex that has systemic cardiovascular consequences, including increases in heart rate and blood pressure and a decrease in resting limb vascular conductance. Moreover, the response to this reflex appears to be attenuated in females compared with males.
Andrew H. Ramsook, Morgan A. Hughes, Wyatt W. Pruter, Kevin L. Webb, Ali Ataie, Chad C. Wiggins, Gabrielle A. Dillon, Sarah E. Baker, Michael J. Joyner   +8 more
wiley   +1 more source

齿轮传动中几种典型故障的振动图谱分析

Jixie chuandong, 1999
Compared with normal acceleration signal, the outline signal of high frequency acceleration coming from demodulation is of more capacities for canceling noise and reveals faults nature more directly.
王新晴, 王耀华, 陈六海, 唐文标, 徐燕申   +4 more
doaj  

Hemodynamic Modeling and Phase‐Adjustable Reconstruction of Hyperpolarized Cardiac 13C MRS Using 1H Cine and ECG Timing

Magnetic Resonance in Medicine, Volume 96, Issue 3, Page 1054-1065, September 2026.
ABSTRACT Purpose To deconvolve cardiac phase and hemodynamic effects in hyperpolarized (HP) [1‐13C]pyruvate and to develop a cardiac phase‐adjustable reconstruction framework. Methods Cardiac phase drift during dynamic acquisition of HP 13C MRS and its effect on dynamic signal fidelity were simulated using a digital cardiac phantom. A hemodynamic model
Sung‐Han Lin, Corey Mozingo, Crystal E. Harrison, Kelley A. Derner, Craig R. Malloy, Jae Mo Park   +5 more
wiley   +1 more source

Demodulation of Visible Light Communication based on Gaussian Support Vector Machine

Guangtongxin yanjiu
ObjectiveConsidering the nonlinear effects in Visible Light Communication (VLC) systems based on Orthogonal Frequency Division Multiplexing (OFDM), an advanced classification demodulation methodology based on Gaussian Support Vector Machines (Gaussian ...
XU Zizhen, LI Jianfeng, LIU Xiaoshuang
doaj  

Development and Study of Demodulators for Frequency Hopping Spread Spectrum Signals

Известия высших учебных заведений России: Радиоэлектроника, 2017
Demodulation task is encountered in many practical applications including digital signal processing and digital communications. Demodulation is connected with the communication system performance.
D. I. Kaplun, V. V. Gulvanskiy, I. I. Kanatov, D. M. Klionskiy, A. B. Khachaturyan, D. N. Butusov, V. F. Lapizkiy, V. I. Bobrovskiy   +7 more
doaj  

Deep Learning-Based FM Demodulation in Complex Electromagnetic Environment

IEEE Open Journal of the Communications Society
In recent years, deep learning has been applied widely in the field of communication. In this paper, a deep learning-based frequency modulation (FM) demodulation method is proposed for FM signal demodulation in complex electromagnetic environment.
Shilian Zheng, Zhangbin Pei, Tao Chen, Jiepeng Chen, Weidang Lu, Xiaoniu Yang   +5 more
doaj   +1 more source

Investigation of a Signal Demodulation Method based on Wavelet Transformation for OFDR to Enhance Its Distributed Sensing Performance. [PDF]

Sensors (Basel), 2019
Feng K, Cui J, Dang H, Sun X, Jiang D, Jin Y, Niu Y, Zhang X.   +7 more
europepmc   +1 more source

Signal detection of rotational processes and frequency demodulation

1973 IEEE Conference on Decision and Control including the 12th Symposium on Adaptive Processes, 1973
A signal detection problem for continuous rotational processes is formulated by using H. P. McKean's trick of “injection≓. Both the sensor and the signal dynamics are described by bilinear 3 × 3-matrix Ito differential equations, where noise can be viewed as entering multiplicatively. The injection is shown to be bijective.
openaire   +2 more sources

Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared‐Aperture Retro‐Reflective/Transmissive Metasurface

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Conceptual illustration of the retro‐reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro‐reflective mode and the two modes operate simultaneously within the same decoupled aperture ...
Shulei Zhang, Ruichao Zhu, Yuxiang Jia, Fan Wu, Xinqi Cai, Zhihui Zhang, Dan Liu, Yuxiao Guo, Jiafu Wang   +8 more
wiley   +1 more source

Demodulation system Patent [PDF]

, 1969
Development of demodulation system for removing amplitude modulation from two quadrature displaced data bearing ...
Munoz, R. M., Kerwin, W. J., Dix, M. G.
core   +1 more source