Results 81 to 90 of about 252,546 (281)

Algorithms for Spectral Analysis of Irregularly Sampled Time Series

Journal of Statistical Software, 2004
In this paper, we present a spectral analysis method based upon least square approximation. Our method deals with nonuniform sampling. It provides meaningful phase information that varies in a predictable way as the samples are shifted in time.
Adolf Mathias, Florian Grond, Ramon Guardans, Detlef Seese, Miguel Canela, Hans H. Diebner   +5 more
doaj   +1 more source

Tau Aggregate Imaging and Transcriptomics of Alzheimer's Disease Brain at Different Stages of Disease

Advanced Science, EarlyView.
The protein aggregates and gene expression in the middle temporal gyrus (MTG) and somatosensory cortex (SOM) of the postmortem brains of 13 Alzheimer's disease patients were studied in detail, revealing that small hyperphosphorylated tau aggregates increase with Braak stage driven by microglial inflammation.
Elizabeth A. English, Dorothea Böken, Matthew W. Cotton, Matthew R. Cheetham, Johanna S. Jackson, Georg Meisl, John S. H. Danial, Paul M. Matthews, Nurun N. Fancy, David Klenerman   +9 more
wiley   +1 more source

Experiments on Nonlocal Fluid‐Flow Metamaterials

Advanced Science, EarlyView.
A nonlocal fluid‐flow metamaterial composed of standard microfluidic tubes and connectors is designed. Hence, the current of the system at one position depends on the gradient of fluid flow at many other positions, leading to unusual alternating backward and forward laminar flows of water.
Ke Wang, Yi Chen, Martin Wegener
wiley   +1 more source

Asymptotically I_2-lacunary statistical equivalence of double sequences of sets [PDF]

, 2015
In this paper, we introduce the concepts of Wijsman asymptotically I_2-statistical equivalence, Wijsman strongly asymptotically I_2-lacunary equivalence and Wijsman asymptotically I_2-lacunary statistical equivalence of double sequences of sets and ...
Dündar, Erdinç, Ulusu, Uğur
core   +3 more sources

Asymptotically I_2-Cesàro equivalence of double sequences of sets

, 2016
In this paper, we defined the concepts of asymptotically I_2-Cesàro equivalence and investigate the relationships between the concepts of asymptotically strongly I_2-Cesàro equivalence, asymptotically strongly I_2-lacunary equivalence, asymptotically p ...
Dündar, Erdinç, Ulusu, Uğur, Aydın, Bünyamin   +2 more
core   +1 more source

Beyond‐Classical Ferroelectric Metamaterials: 3D‐Printed Planar Lattices With Programmable Electro–Thermo–Mechanical Coupling

Advanced Science, EarlyView.
Planar ferroelectric lattices with rationally‐tailored topology and polarization achieve programmable piezoelectric and pyroelectric properties. Analytical modeling, homogenization, and experiments collectively demonstrate enhanced and tunable longitudinal, transverse, and shear piezoelectric responses, together with substantially improved ...
Jiahao Shi, Kang Ju, Haoyu Chen, Valerie Orsat, Agus P. Sasmito, Ali Ahmadi, Abdolhamid Akbarzadeh   +6 more
wiley   +1 more source

From shockwaves to the gravitational memory effect

Journal of High Energy Physics
We study the relationship between shockwave geometries and the gravitational memory effect in four-dimensional asymptotically flat spacetime. In particular, we show the ’t Hooft commutation relations of shockwave operators are equivalent to the ...
Temple He, Ana-Maria Raclariu, Kathryn M. Zurek   +2 more
doaj   +1 more source

Asymptotic equivalence and summability

International Journal of Mathematics and Mathematical Sciences, 1993
This paper is a study of the relatioship. between the asymptotic equivalence of two sequences (limnxn/yn=1) and three variatious of this equivalence for a sequence-to-sequence transformation A, the three variations are give by the ratios RmAx/RmAy.
Mousa S. Marouf
doaj   +1 more source

Low‐Power Control Of Resistance Switching Transitions in First‐Order Memristors

Advanced Electronic Materials, EarlyView.
Joule losses are a serious concern in modern integrated circuit design. In this regard, minimizing the energy necessary for programming memristors should be handled with care. This manuscript presents an optimal control framework, allowing to derive energy‐efficient programming voltage protocols for resistance switching devices. Following this approach,
Valeriy A. Slipko, Alon Ascoli, Fernando Corinto, Yuriy V. Pershin   +3 more
wiley   +1 more source

Asymptotically I-Cesàro equivalence of sequences of sets

, 2015
In this study, we defined concept of asymptotically I-Cesàro equivalence and investigate the relationship between the concepts of asymptotically strongly I-Cesàro equivalence, asymptotically strongly I-lacunary equivalence, asymptotically p-strongly I ...
Ulusu, Uğur
core   +1 more source