Results 51 to 60 of about 3,738,904 (156)

Trainlets: Dictionary Learning in High Dimensions

, 2016
Sparse representations has shown to be a very powerful model for real world signals, and has enabled the development of applications with notable performance.
Elad, Michael, Ophir, Boaz, Sulam, Jeremias, Zibulevsky, Michael   +3 more
core   +1 more source

The 21cm angular-power spectrum from the dark ages [PDF]

, 2007
At redshifts z >~ 30 neutral hydrogen gas absorbs CMB radiation at the 21cm spin-flip frequency. In principle this is observable and a high-precision probe of cosmology.
Anthony Challinor, Antony Lewis, D. Scott, E. T. Vishniac, I. S. Gradshteyn, M. Abramowitz, R. Barkana   +6 more
core   +2 more sources

Analytical Capacitance Model for Carbon Nanotube Field-Effect Transistors Including Interface-Trap Effects

Nanomaterials
The creation of carbon nanotubes has sparked a paradigm shift in the post-silicon era because of their decent electronic and optical properties. However, interface traps pose an obstacle in the realization of high-performance carbon nanotube field-effect
Bin Zhou, Rui Zhan, Zilin Teng, Yiheng Xue, Xiaoyan Hu, Jianhua Jiang, Panpan Zhang   +6 more
doaj   +1 more source

Small-Signal Modeling and Nonlinear Characterization of Aligned Carbon Nanotube Schottky Barrier Diodes

Applied Sciences
Schottky barrier diodes (SBDs) based on low-dimensional materials are of interest for high-speed electronics due to their intrinsic nonlinear transport characteristics.
Linxin Dai, Junhong Wu, Honggang Liu
doaj   +1 more source

The Solar Neutrino Problem: Neither Astrophysics Nor Oscillations? [PDF]

, 1994
There is no consistent solar model which can describe all experimental data on the solar neutrinos. The problem can be formulated essentially in a model independent way.
Smirnov, Alexei Yu.
core   +3 more sources

Small Signal Modeling and Stability Analysis of Modular Multilevel Converter Based on Harmonic State-Space Model

Energies, 2020
The stability of Modular multilevel converter (MMC) itself is the premise of analyzing the stability of MMC cascading with other cells, so this paper addressed the small-signal stability of MMC with dc voltage control mode which is the common operation ...
Nian Mei, Shiyuan Yin, Yue Wang, Zhuling Li, Pengkun Li, Yonghui Liu, Bo Yue, Zhenyu Li   +7 more
doaj   +1 more source

Estimation of Upper Limits Using a Poisson Statistic

, 1999
Bayesian, classical, and extended maximum likelihood approaches to estimation of upper limits in experiments with small numbers of signal events are surveyed. The discussion covers only experiments whose outcomes are well described by a Poisson statistic.
Barlow, Cousins, Cousins, Crow, Eadie, Escoubes, Feldman, Garwood, Helene, Helene, Helene, Ilya Narsky, Jaynes, Jeffreys, Jeffreys, Laplace, Lyons, Müller, Neyman, Prosper   +19 more
core   +1 more source

Small-Signal Stability Analysis of Photovoltaic-Hydro Integrated Systems on Ultra-Low Frequency Oscillation

Energies, 2020
In recent years, ultralow-frequency oscillation has repeatedly occurred in asynchronously connected regional power systems and brought serious threats to the operation of power grids.
Sijia Wang, Xiangyu Wu, Gang Chen, Yin Xu   +3 more
doaj   +1 more source

Antiproton signatures from astrophysical and dark matter sources at the galactic center [PDF]

, 2015
The center of our Galaxy is a complex region characterized by extreme phenomena. The presence of the supermassive Sagittarius A* black hole, a high Dark Matter density and an even higher baryonic density are able to produce very energetic processes ...
Cembranos, J. A. R., Gammaldi, V., Maroto, A. L.   +2 more
core   +3 more sources

Production of Gravitational Waves in the nMSSM

, 2008
During a strongly first-order phase transition gravitational waves are produced by bubble collisions and turbulent plasma motion. We analyze the relevant characteristics of the electroweak phase transition in the nMSSM to determine the generated ...
Balazs C, Bodeker D, Caprini C Durrer R Servant G, Cline J M, Cline J M Joyce M Kainulainen K, Corbin V, Danzmann K, Fromme L, Gogoberidze G Kahniashvili T Kosowsky A, Harry G M, Huber S J, Huber S J Konstandin T, Hugonie C, Konstandin T, Kosowsky A Mack A Kahniashvili T, Moore G D, Nicolis A, Stephan J Huber, Thomas Konstandin   +18 more
core   +1 more source