Results 71 to 80 of about 38,752 (314)
Measuring brain beats: Cardiac‐aligned fast functional magnetic resonance imaging signals
Human Brain Mapping, Volume 44, Issue 1, Page 280-294, January 2023., 2023 Blood and cerebrospinal fluid (CSF) pulse and flow throughout the brain, driven by the cardiac cycle. We use rapid functional magnetic resonance imaging (fMRI) measurements to assess blood and CSF flow dynamics in a conventional 3 T magnetic resonance imaging scanner.
Dora Hermes +3 more
wiley +1 more source
A Note on Surgical Eigenstructure Assignment via State Feedback [PDF]
arXiv, 2020 Assignability of all eigenvalues and a subset of key eigenvectors/generalized eigenvectors of a linear time-invariant system via state feedback is considered. We clarify that, if the key eigenvectors/generalized eigenvectors and their associated eigenvalues satisfy the classical conditions for full eigenstructure assignment, the remaining eigenvalues ...
arxiv
Tunable Polariton Rabi Oscillation in Phase‐Changing Perovskite Microcavities
Advanced Science, EarlyView.This work demonstrated the tunable Rabi oscillation of exciton‐polaritons in MAPbBr3 perovskites due to the emergence of ferroelectricity during the crystallographic phase transition. Both the Rabi oscillation and exciton oscillator strength exhibit an unusual temperature dependence that is related to the emergence of ferroelectricity in the tetragonal
Hyeon‐Seo Choi +11 more
wiley +1 more source
Spectra of chains connected to complete graphs [PDF]
arXiv, 2020 We characterize the spectrum of the Laplacian of graphs composed of one or two finite or infinite chains connected to a complete graph. We show the existence of localized eigenvectors of two types, eigenvectors that vanish exactly outside the complete graph and eigenvectors that decrease exponentially outside the complete graph.
arxiv
Advanced Science, EarlyView.A stretchable, breathable, large‐area high‐density sEMG (HD‐sEMG) electrode array is reported, which enables seamless integration to the complex surface of the submental and infrahyoid muscles to detect high‐fidelity HD‐sEMG signals during swallowing.
Weijie Hong +9 more
wiley +1 more source
Final Demand Impact on ICT Output: A Macro Multiplier Approach with Eigenvalues [PDF]
فصلنامه پژوهشهای اقتصادی ایران, 2009 In this paper focusing on the Information and Communication Technology sector (ICT sector) in Iranian Input-Output table and a method of policy evaluation is designed which gives a deeper insight of interaction between policy objective (output) and ...
Esfandiar Jahangard, Habibeh Mansoori
doaj
Energies, 2017 State monitoring is very important for the safe operation of high-voltage transformers. A non-contact vibro-acoustic detection method based on the Blind Source Separation (BSS) was proposed in this paper to promote the development of transformer on-line ...
Liang Zou +4 more
doaj +1 more source
Eigenvector localization in the heavy-tailed random conductance model [PDF]
arXiv, 2018 We generalize our former localization result about the principal Dirichlet eigenvector of the i.i.d. heavy-tailed random conductance Laplacian to the first $k$ eigenvectors. We overcome the complication that the higher eigenvectors have fluctuating signs by invoking the Bauer-Fike theorem to show that the $k$th eigenvector is close to the principal ...
arxiv
Eigenvectors in bottleneck algebra
Linear Algebra and its Applications, 1992 AbstractLet (B, ⩽) be a nonempty, linearly ordered set without maximum and minimum, and (⊕, ⊗) = (max, min). A vector x is said to be an eigenvector of a square matrix A if A ⊗ x = x. The aim of the present paper is to characterize the eigenvectors by means of the associated graph of the matrix and to give bounds for the set of all eigenvectors.
Kataŕına Cechlárová
openalex +3 more sources
Advanced Science, EarlyView.A multi‐parameter‐tunable, all‐metallic, low‐loss, wave‐chaotic cavity enables a frequency‐insensitive (over a 7 GHz bandwidth) technique to synthesize desired transfer functions within smaller windows to high accuracy and with complete reconfigurability of shapes and center frequencies.
Fabian T. Faul +4 more
wiley +1 more source