Results 61 to 70 of about 38,212 (190)

Improving the Accuracy of Direction of Arrival Estimation with Multiple Signal Inputs Using Deep Learning

open access: yesSensors
In this paper, an innovative cyclic noise reduction method and an improved CAPON algorithm (also the called minimum variance distortionless response (MVDR) algorithm) are proposed to improve the accuracy and reliability of DOA (direction of arrival ...
Yihan Lu   +5 more
doaj   +1 more source

Simulation study of beam-beam effects

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2005
The Beijing Electron-Positron Collider (BEPC) will be upgraded to BEPCII, and the luminosity will be about 100 times higher. We developed a three-dimensional strong-strong PIC code to study the beam-beam effects in BEPCII.
Yuan Zhang, Kazuhito Ohmi, Limin Chen
doaj   +1 more source

Dissociative Electron Transfer to Diphenyl-Substituted Bicyclic Endoperoxides: The Effect of Molecular Structure on the Reactivity of Distonic Radical Anions and Determination of Thermochemical Parameters

open access: yesMolecules, 2014
The heterogeneous electron transfer reduction of the bicyclic endoperoxide 1,4-diphenyl-2,3-dioxabicyclo[2.2.1]hept-5-ene (4) was investigated in N,N-dimethylformamide  at a glassy carbon electrode.
David C. Magri, Mark S. Workentin
doaj   +1 more source

Convolutional Dictionary Learning through Tensor Factorization [PDF]

open access: yes, 2015
Tensor methods have emerged as a powerful paradigm for consistent learning of many latent variable models such as topic models, independent component analysis and dictionary learning.
Anandkumar, Animashree, Huang, Furong
core   +2 more sources

Convolution numbers: the cyclic case

open access: yes
Convolution sums are introduced and special instances of the cyclic convolution on finite sets is examined in more detail. The distributions that emerge are multidimensional generalizations of the Catalan and Narayana numbers. This work yields a closed form solution for 1-dimensional marginals and certain bivariate marginals in the cyclic prime case ...
Constantine, Gregory M   +1 more
openaire   +2 more sources

On the K-theory of the cyclic quiver variety

open access: yes, 1999
We compute the convolution product on the equivariant K-groups of the cyclic quiver variety. We get a q-analogue of double-loop algebras, closely related to the toroidal quantum groups previously studied by the authors.
Varagnolo, Michela, Vasserot, Eric
core   +1 more source

Value Iteration Networks on Multiple Levels of Abstraction

open access: yes, 2019
Learning-based methods are promising to plan robot motion without performing extensive search, which is needed by many non-learning approaches. Recently, Value Iteration Networks (VINs) received much interest since---in contrast to standard CNN-based ...
Behnke, Sven   +2 more
core   +1 more source

Prediction of height adjustment of shearer drum based on improved gated recurrent neural network

open access: yesGong-kuang zidonghua
The adaptive cutting technology of the shearer is a key technology for achieving intelligent mining in fully mechanized working faces. In order to solve the problem of low automatic cutting precision of the shearer in complex coal seams, a prediction ...
QI Ailing, WANG Yu, MA Hongwei
doaj   +1 more source

Prefix-Free Frequency Domain Equalization for Underwater Acoustic Single Carrier Transmissions

open access: yesIEEE Access, 2018
Prefixes, in forms of cyclic-prefixes or zero-padding, have often been viewed as indispensable in underwater acoustic single-carrier transmissions to avoid inter-block interference (IBI) and to formulate circular convolution.
Xingbin Tu, Aijun Song, Xiaomei Xu
doaj   +1 more source

Projective module description of the q-monopole

open access: yes, 1998
The Dirac q-monopole connection is used to compute projector matrices of quantum Hopf line bundles for arbitrary winding number. The Chern-Connes pairing of cyclic cohomology and K-theory is computed for the winding number -1.
Hajac, P. M., Majid, S.
core   +2 more sources

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