نتایج جستجو برای: exponential fitting factor
تعداد نتایج: 946667 فیلتر نتایج به سال:
Aiming at the problem of wind turbine generator fault early warning, a warning method based on nonlinear decreasing inertia weight and exponential change learning factor particle swarm optimization is proposed to optimize deep belief network (DBN). With data farm supervisory control acquisition (SCADA) as input, weights biases are pre-trained layer by layer. Then BP neural used fine-tune parame...
The recirculation fraction of intramyocardial Ca(2+) (RF) has conventionally been obtained from the monotonic decay of postextrasystolic potentiation (PESP). The used assumption is that the decay is exponential. However, we have found that PESP usually decays in alternans even at spontaneous heart rates (>100 beats/min) in excised, cross-circulated canine heart preparations under normal coronar...
Introducing a five factor more flexible model this paper verifies the in-sample fitting and the out-of-sample forecasting performance of several extensions of the Nelson and Siegel (1987) parametric model which was reinterpreted by Diebold and Li (2006). We used different rules for fixing the parameters λ that govern the models ́ exponential components shapes, and predictions were made for diffe...
objective: to investigate the friction of rabbit’s knee joint with designed pendulum friction tester to diagnose and evaluate different pathological and therapeutic conditions following haemarthrosis, osteoarthritis, and other joint disorders. materials and methods: friction coefficient of 10 adult male albino rabbit’s joint (5 right and 5 left knees) weighted 1.59 ± 0.27 kg, after designing a...
Coral mud is widely distributed in the South China Sea. Studying deformation laws of coral important to infrastructure development In this article, a one-dimensional oedometer test under near-natural conditions performed. The exponential fitting model, Burgers model and ODGM are used analyse time-strain relationship different vertical pressures. self-fitting accuracy prediction three models pre...
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