Results 11 to 20 of about 1,843,129 (311)
III. Researches in spectrum-analysis in connexion with the spectrum of the Sun [PDF]
Proceedings of the Royal Society of London, 1873 Abstract The author, after referring to the researches in which he has been engaged since January 1869 in conjunction with Dr. Frankland, refers to the evidence obtained by them as to the thickening and thinning of spectral lines by variations of pressure, and to the disappearance of certain lines when the method employed by them ...
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Vogel's “Spectrum Analysis” [PDF]
Nature, 1877 THE aim of the author in writing this book may best be described in his own words. He says in the introduction:— Practische Spectralanalyse irdischer stoffe. Von Dr. Hermann W. Vogel (Nordlingen: C. H. Beck.)
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Performance analysis of spectrum sensing with multiple primary users [PDF]
, 2012 The effect of multiple primary users on spectrum-sensing performance is investigated. Different models for primary user traffic are considered. The effects of different system parameters on sensing accuracy are examined.
Jiang, Lingge +3 more
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, 2021 Phase measurement sum-frequency vibration spectroscopy (SFG) can obtain molecular orientation information of the material surface, but there are still some key issues that remain unresolved, including experimental repeatability, experimental design, and ...
Li Yu-qiong +4 more
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Functional singular spectrum analysis [PDF]
Stat, 2021 In this paper, we develop a new extension of the singular spectrum analysis (SSA) called functional SSA to analyze functional time series. The new methodology is constructed by integrating ideas from functional data analysis and univariate SSA. Specifically, we introduce a trajectory operator in the functional world, which is equivalent to the ...
Hossein Haghbin +4 more
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Information reuse in dynamic spectrum access [PDF]
, 2013 Dynamic spectrum access (DSA), where the permission to use slices of radio spectrum is dynamically shifted (in time an in different geographical areas) across various communications services and applications, has been an area of interest from technical ...
Tipper, D +8 more
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A Cryptocurrency Spectrum Short Analysis [PDF]
Journal of Risk and Financial Management, 2020 Technological development brings about economic changes that affect most citizens, both in developed and undeveloped countries. The implementation of blockchain technologies that bring cryptocurrencies into the economy and everyday life also induce risks.
Mircea Constantin Șcheau +3 more
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Application of Power Spectrum, Cepstrum, Higher Order Spectrum and Neural Network Analyses for Induction Motor Fault Diagnosis [PDF]
, 2013 The power spectrum is defined as the square of the magnitude of the Fourier transform (FT) of a signal. The advantage of FT analysis is that it allows the decomposition of a signal into individual periodic frequency components and establishes the ...
Liang, B. +4 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu +8 more
wiley +1 more source