Results 21 to 30 of about 4,487,534 (292)

Possible structure in the cosmic ray electron spectrum measured by the ATIC-2 and ATIC-4 experiments [PDF]

open access: yes, 2011
A strong excess in a form of a wide peak in the energy range of 300-800 GeV was discovered in the first measurements of the electron spectrum in the energy range from 20 GeV to 3 TeV by the balloon-borne experiment ATIC (J. Chang et al.
Adams, Jr., J. H.   +17 more
core   +3 more sources

Optimal Sizing of Hybrid Energy Storage System Taking into Account Economic Factors and Power Allocation [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The sizing of hybrid energy storage system (HESS) for smoothing wind power fluctuations was studied in this paper. The goal of the proposed method is to find the optimal sizing of the battery and supercapacitor, and its meet the constraints of the power ...

doaj   +1 more source

A Sensing Error Aware MAC Protocol for Cognitive Radio Networks [PDF]

open access: yes, 2011
Cognitive radios (CR) are intelligent radio devices that can sense the radio environment and adapt to changes in the radio environment. Spectrum sensing and spectrum access are the two key CR functions.
Hu, Donglin, Mao, Shiwen
core   +2 more sources

Solar Neutrino Rates, Spectrum, and its Moments : an MSW Analysis in the Light of Super-Kamiokande Results [PDF]

open access: yes, 2000
We re-examine MSW solutions of the solar neutrino problem in a two flavor scenario taking (a) the results on total rates and the electron energy spectrum from the 1117-day SuperKamiokande (SK) data and (b) those on total rates from the Chlorine and ...
Alan H. Guth   +31 more
core   +4 more sources

Near-Infrared Reflectivity of Superconducting FeSe Thin Films

open access: yesIEEE Photonics Journal, 2019
We present an investigation on the intrinsic optical properties of superconducting FeSe thin films deposited on CaF2 substrates. It is found that the samples respond strongly to the near-infrared (NIR) irradiation in different temperature regimes.
Yanmin Zhang   +12 more
doaj   +1 more source

Study on Fatigue Spectrum Analysis and Reliability Analysis of Multilayer Flexible Riser

open access: yesJournal of Marine Science and Engineering, 2022
Multilayer composite flexible risers have been widely used in engineering. However, this type of structure is complex, as there are influences between layers. Moreover, a range of uncertain factors need to be considered in fatigue analysis. Therefore, it
Jianxing Yu   +5 more
doaj   +1 more source

Frequency spectrum recurrence analysis [PDF]

open access: yesScientific Reports, 2020
AbstractIn this paper, we present the new frequency spectrum recurrence analysis technique by means of electro-encephalon signals (EES) analyses. The technique is suitable for time series analysis with noise and disturbances. EES were collected, and alpha waves of the occipital region were analysed by comparing the signals from participants in two ...
Guênia Ladeira   +4 more
openaire   +4 more sources

Experimental study on the effect of an oyster reef on the nonlinear characteristics of irregular waves

open access: yesFrontiers in Marine Science, 2022
As a “marine ecological engineer”, the oyster reefs not only perform important ecological functions, but also reduce the damage caused by waves to protective structures such as seawalls.
Beihan Jiang   +8 more
doaj   +1 more source

CMB anomalies and the effects of local features of the inflaton potential [PDF]

open access: yes, 2017
Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales $k=0.002$ Mpc${}^{-1}$ and $k=0.0035$ Mpc${}^{-1}$ respectively. We analyze for the first time the effects a
Cadavid, Alexander Gallego   +2 more
core   +2 more sources

Sound Level Measurement and Spectrum Analysis in Full and Empty Various Social Spaces

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
The noise seen in different areas throughout human history has turned into a frequently complained problem with the increasing industry and technology. Unfortunately, the problem of noise has become a part of social life today.
Serden Başak, Kazım Onur Demirarslan
doaj   +1 more source

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