Results 21 to 30 of about 412,412 (307)

Geometry Optimization of Self‐Similar Transport Network [PDF]

open access: yesMathematical Problems in Engineering, 2011
We optimize geometries of various self‐similar transport networks using a three‐step strategy based on the entransy theory. Using this optimization method, we obtained optimal relationships of geometric parameters of T‐shape networks for fluid flow, heat conduction, convective heat transfer, and other transport phenomena.
X. D. Shan, M. Wang, Z. Y. Guo
openaire   +1 more source

Geometry of Similarity Comparisons

open access: yes, 2020
Many data analysis problems can be cast as distance geometry problems in \emph{space forms} -- Euclidean, spherical, or hyperbolic spaces. Often, absolute distance measurements are often unreliable or simply unavailable and only proxies to absolute distances in the form of similarities are available.
Tabaghi, Puoya   +3 more
openaire   +2 more sources

Probabilistic Principal Geodesic Deep Metric Learning

open access: yesIEEE Access, 2022
Similarity learning which is useful for the purpose of comparing various characteristics of images in the computer vision field has been often applied for deep metric learning (DML).
Dae Ha Kim, Byung Cheol Song
doaj   +1 more source

Self-similar spacetimes: Geometry and dynamics [PDF]

open access: yesCommunications in Mathematical Physics, 1974
The nature and uses of self-similarity in general relativity are discussed. A spacetime may be self-similar (homothetic) along surfaces of any dimensionality, from 1 to 4. A geometric construction is given for all self-similar spacetimes. As an important special case, the “spatially self-similar cosmological models” are introduced, and their dynamical ...
openaire   +2 more sources

Visual Arts in U.S. Geometry Textbooks Aligned with the Common Core Standards

open access: yesAnnales de Didactique et de Sciences Cognitives, 2020
This study investigates visual arts references in five U.S. high school geometry textbooks aligned with the Common Core State Standards for Mathematics. In all of the textbooks, architecture is the most commonly used context. More than half of the visual
Gloriana González
doaj   +1 more source

Multipath target discrimination in human monitoring based on MIMO mmWave radar

open access: yesElectronics Letters, 2023
To address the interference caused by multipath ghosts, this paper presents a multipath target discrimination method based on separated Gaussian similarity matrices.
Borui Du   +4 more
doaj   +1 more source

Limits of Predictability of a Global Self-Similar Routing Model in a Local Self-Similar Environment

open access: yesAtmosphere, 2020
Regional Distributed Hydrological models are being adopted around the world for prediction of streamflow fluctuations and floods. However, the details of the hydraulic geometry of the channels in the river network (cross sectional geometry, slope, drag ...
Nicolas Velasquez, Ricardo Mantilla
doaj   +1 more source

Similarity of energy balance in mechanically ventilated compartment fires: An insight into the conditions for reduced-scale fire experiments

open access: yesNuclear Engineering and Technology, 2022
When evaluating energy balance and temperature in reduced-scale fire experiments, which are conducted as an alternative to full-scale fire experiments, it is important to consider the similarity in the scale among these experiments.
Hitoshi Suto   +2 more
doaj   +1 more source

Building Geometry Simplification for Improving Mesh Quality of Numerical Analysis Model

open access: yesApplied Sciences, 2020
Numerical analysis, especially the finite volume method (FVM), is one of the primary approaches employed when evaluating a building environment. A complicated geometry can degrade the mesh quality, leading to numerical diffusions and errors.
Gwanyong Park   +3 more
doaj   +1 more source

DCG++: A data-driven metric for geometric pattern recognition.

open access: yesPLoS ONE, 2019
Clustering large and complex data sets whose partitions may adopt arbitrary shapes remains a difficult challenge. Part of this challenge comes from the difficulty in defining a similarity measure between the data points that captures the underlying ...
Jiahui Guan   +2 more
doaj   +1 more source

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