Results 31 to 40 of about 1,988,912 (333)

Search efficiency in the Adam–Delbrück reduction-of-dimensionality scenario versus direct diffusive search

open access: yesNew Journal of Physics, 2022
The time instant—the first-passage time (FPT)—when a diffusive particle (e.g., a ligand such as oxygen or a signalling protein) for the first time reaches an immobile target located on the surface of a bounded three-dimensional domain (e.g., a hemoglobin
Denis S Grebenkov   +2 more
doaj   +1 more source

Dimensionality reduction in neuroscience [PDF]

open access: yesCurrent Biology, 2016
The nervous system extracts information from its environment and distributes and processes that information to inform and drive behaviour. In this task, the nervous system faces a type of data analysis problem, for, while a visual scene may be overflowing with information, reaching for the television remote before us requires extraction of only a ...
Adrienne L. Fairhall   +2 more
openaire   +3 more sources

Gauged supergravity from dimensional reduction [PDF]

open access: yes, 1997
We perform a generalised Scherk-Schwarz reduction of the effective action of the heterotic string on T6 to obtain a massive N = 4 supergravity theory in four dimensions.
Behrndt   +23 more
core   +3 more sources

Equivalence of dimensional reduction and dimensional regularisation [PDF]

open access: yesZeitschrift für Physik C Particles and Fields, 1994
For some years there has been uncertainty over whether regularisation by dimensional reduction (DRED) is viable for non-supersymmetric theories. We resolve this issue by showing that DRED is entirely equivalent to standard dimensional regularisation (DREG), to all orders in perturbation theory and for a general renormalisable theory.
I. Jack, D.R.T. Jones, K. Roberts
openaire   +3 more sources

Consistent dimensional reduction of five-dimensional off-shell supergravity [PDF]

open access: yes, 2005
There are some points to notice in the dimensional reduction of the off-shell supergravity. We discuss a consistent way of the dimensional reduction of five-dimensional off-shell supergravity compactified on S^1/Z_2.
E. B. Bogomol’ny   +2 more
core   +1 more source

Factorization and regularization by dimensional reduction [PDF]

open access: yesPhysics Letters B, 2005
Since an old observation by Beenakker et al, the evaluation of QCD processes in dimensional reduction has repeatedly led to terms that seem to violate the QCD factorization theorem. We reconsider the example of the process gg->ttbar and show that the factorization problem can be completely resolved.
Signer, A., Stöckinger, D.
openaire   +4 more sources

Dimension and Dimensional Reduction in Quantum Gravity

open access: yesUniverse, 2019
If gravity is asymptotically safe, operators will exhibit anomalous scaling at the ultraviolet fixed point in a way that makes the theory effectively two-dimensional.
Steven Carlip
doaj   +1 more source

Proximities in dimensionality reduction

open access: yes, 2022
Dimensionality reduction aims at representing high-dimensional data in a lower-dimensional representation, while preserving their structure (clusters, outliers, manifold). Dimensionality reduction can be used for exploratory data visualization, data compression, or as a preprocessing to some other analysis in order to alleviate the curse of ...
Lee, John Aldo   +3 more
openaire   +4 more sources

Continuous and Discrete ZND Models with Aid of Eleven Instants for Complex QR Decomposition of Time-Varying Matrices

open access: yesMathematics, 2023
The problem of QR decomposition is considered one of the fundamental problems commonly encountered in both scientific research and engineering applications.
Jianrong Chen   +2 more
doaj   +1 more source

Analisis Performa Algoritma K-Nearest Neighbor dan Reduksi Dimensi Menggunakan Principal Component Analysis

open access: yesJambura Journal of Mathematics, 2023
This paper discusses the performance of the K-Nearest Neighbor Algorithm with dimension reduction using Principal Component Analysis (PCA) in the case of diabetes disease classification.
Aldila Dinanti, Joko Purwadi
doaj   +1 more source

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