نتایج جستجو برای: maximum available deceleration rate

تعداد نتایج: 1699611  

Mohammad Hasan Ghasemi Mohammad Jafar Sadigh,

The large amount of computation necessary for obtaining time optimal solution for moving a manipulator on specified path has made it impossible to introduce an on line time optimal control algorithm. Most of this computational burden is due to calculation of switching points. In this paper a learning algorithm is proposed for finding the switching points. The method, which can be used for both ...

Journal: :International Heart Journal 2021

Ideal heart rate (HR), particularly for those with failure preserved ejection fraction (HFpEF), remains unknown. We hypothesized that cardiac output would be maximum when the overlap between E-wave and A-wave at trans-mitral flow is "zero" in Doppler echocardiography. retrospectively investigated association among length two waves, actual HR, other echocardiographic parameters to construct a fo...

Journal: :Environmental science & technology 2001
Y Cho W Choi C H Lee T Hyeon H I Lee

This study investigated an application of TiO2 photocatalyst sensitized with tris(4,4'-dicarboxy-2,2'-bipyridyl)ruthenium-(II) complex to CCl4 degradation under visible light irradiation. By injecting electrons from the photoexcited sensitizer to the conduction band, the sensitized TiO2 degraded CCl4 under the irradiation of lambda > 420 nm. The quantum yield of CCl4 dechlorination was about 10...

2016
Wei Hu Xian Jin Peng Zhang Qiang Yu Guizhi Yin Yi Lu Hongbing Xiao Yueguang Chen Dadong Zhang

Accurate measurements of autonomic nerve regulation in heart failure (HF) were unresolved. The discriminating performance of deceleration and acceleration capacities of heart rate in HF was evaluated in 130 HF patients and 212 controls. Acceleration capacity and deceleration capacity were independent risk factors for HF in males, evaluated by multiple logistic regression analysis, with odds rat...

Journal: :The Journal of Physiology 1938

Journal: :Proceedings of the National Academy of Sciences 2012

1996
Paul J. Steinhardt

Draft: February 1, 2008 In the standard big bang model, the expansion rate of the Universe is predicted to slow down as the Universe evolves. ,2 The deceleration parameter, q0, measures the present deceleration rate. The deceleration causes a deviation from the linear relation between distance and red shift (the Hubble law) at large red shifts. A proposed approach for determining q0 is to measu...

Journal: :International Journal of Impact Engineering 2022

Impact of a single particle onto rigid substrate leads to its deformation and subsequent fragmentation. In this theoretical study simplified model for the plastic flow in deforming is developed which accounts dependence yield strength on effective local strain rate. The approximated by an incompressible inviscid satisfies conditions impenetrability substrate. expression pressure field obtained ...

2002
Richard E Lenski

Background: Experimental populations of Escherichia coli have evolved for 20,000 generations in a uniform environment. Their rate of improvement, as measured in competitions with the ancestor in that environment, has declined substantially over this period. This deceleration has been interpreted as the bacteria approaching a peak or plateau in a fitness landscape. Alternatively, this decelerati...

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