نتایج جستجو برای: artificial propagation

تعداد نتایج: 388570  

Journal: :New Astronomy 2022

We explore the potential of an artificial neural network (ANN) based method intelligence to probe propagation cosmic $\gamma$-ray photons in extragalactic Universe. The journey $\gamma$-rays emitted from a distant source like blazar observer at Earth is impeded by absorption through interaction with background light (EBL), leading electron-positron pair production. This process dominates for ga...

2012
H. Mohammadi Majd M. Jalali Azizpour A. V. Hoseini

In this paper back-propagation artificial neural network (BPANN) is employed to predict the limiting drawing ratio (LDR) of the deep drawing process. To prepare a training set for BPANN, some finite element simulations were carried out. die and punch radius, die arc radius, friction coefficient, thickness, yield strength of sheet and strain hardening exponent were used as the input data and the...

2012
D. Saxena K. S. Verma

This paper demonstrates classification of PQ events utilizing wavelet transform (WT) energy features by artificial neural network (ANN) and SVM classifiers. The proposed scheme utilizes wavelet based feature extraction to be used for the artificial neural networks in the classification. Six different PQ events are considered in this study. Three types of neural network classifiers such as feed ...

Journal: :Nano letters 2007
Eliane H Trepagnier Aleksandra Radenovic David Sivak Phillip Geissler Jan Liphardt

Electrophorescing biopolymers across nanopores modulates the ionic current through the pore, revealing the polymer's diameter, length, and conformation. The rapidity of polymer translocation ( approximately 30,000 bp/ms) in this geometry greatly limits the information that can be obtained for each base. Here we show that the translocation speed of lambda-DNA through artificial nanopores can be ...

2002
Ricardo Marqués Francisco Medina

The recently proposed artificial media with negative magnetic permeability and left-handed metamaterials are revisited at the light of the theory of artificial bi~iso/aniso!tropic media. In particular, the existence of bianisotropic effects in those materials is investigated, making use of an approximate model. Some unexplained properties of the electromagnetic-wave propagation through these me...

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