Results 41 to 50 of about 1,352,066 (287)

Advances in Radiative Heat Transfer: Bridging Far‐Field Fundamentals and Emerging Near‐Field Innovations

open access: yesAdvanced Functional Materials, EarlyView.
This review synthesizes the evolution of radiative heat transfer, emphasizing the transition from far‐field to near‐field regimes. Traditional frameworks, such as Planck's law, are revisited alongside modern innovations like fluctuational electrodynamics. Applications span nanoscale thermal management, energy harvesting, and thermophotovoltaic systems.
Ambali Alade Odebowale   +6 more
wiley   +1 more source

Tosio Kato (1917–1999) [PDF]

open access: yes, 2000
Tosio Kato was born August 25, 1917, in Kanuma City, Tochigi-ken, Japan. His early training was in physics. He obtained a B.S. in 1941 and the degree of Doctor of Science in 1951, both at the University of Tokyo.
Cordes, Heinz   +5 more
core  

Rates of convergence for empirical spectral measures: a soft approach

open access: yes, 2016
Understanding the limiting behavior of eigenvalues of random matrices is the central problem of random matrix theory. Classical limit results are known for many models, and there has been significant recent progress in obtaining more quantitative, non ...
D. Voiculescu   +27 more
core   +1 more source

Tailoring Hole‐Blocking Layers Enables a Versatile Approach for Fast Photomultiplication‐Type Organic Photodetectors

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates the role of hole‐blocking layers (HBLs), particularly the combination of two HBLs in photomultiplication‐type organic photodetectors (PM‐OPDs), which results in high gain and record‐fast response. The proposed HBL strategy also allows for the use of photoactive layer with balanced donor–acceptor stoichiometry, which can be ...
Awais Sarwar   +7 more
wiley   +1 more source

Towards a Hermeneutic Categorical Mathematics or why Category theory goes beyond Mathematical Structuralism [PDF]

open access: yesarXiv, 2006
Category theory provides an alternative to Hilbert's Formal Axiomatic method and goes beyond Mathematical ...
arxiv  

SPECTRAL THEORY

open access: yes, 2007
Spectral theory has for its origin the classical theory of finite matrices and, in a sense, includes all theories which may be specialized to some particular phase of that classical theory. Such a meaning for the term spectral theory is perhaps too broad,
Nelson Dunford
semanticscholar   +1 more source

Applications of Fourier Analysis to Audio Signal Processing: An Investigation of Chord Detection Algorithms [PDF]

open access: yes, 2013
The discrete Fourier transform has become an essential tool in the analysis of digital signals. Applications have become widespread since the discovery of the Fast Fourier Transform and the rise of personal computers.
Lenssen, Nathan
core   +2 more sources

$L^p$-Spectral theory of locally symmetric spaces with $Q$-rank one

open access: yes, 2007
We study the $L^p$-spectrum of the Laplace-Beltrami operator on certain complete locally symmetric spaces $M=\Gamma\backslash X$ with finite volume and arithmetic fundamental group $\Gamma$ whose universal covering $X$ is a symmetric space of non-compact
A. Borel   +22 more
core   +2 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Block generalized locally Toeplitz sequences: theory and applications in the unidimensional case

open access: yesElectronic Transactions on Numerical Analysis, 2020
In computational mathematics, when dealing with a large linear discrete problem (e.g., a linear system) arising from the numericaldiscretization of a differential equation (DE), knowledge of the spectral distribution of the associated matrix has proved ...
Giovanni Barbarino   +2 more
semanticscholar   +1 more source

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