Results 171 to 180 of about 36,403 (314)
Eigenvalue Approach to Dense Clusters in Hypergraphs
Journal of Graph Theory, EarlyView.ABSTRACT In this article, we investigate the problem of finding in a given weighted hypergraph a subhypergraph with the maximum possible density. Using the notion of a support matrix we prove that the density of an optimal subhypergraph is equal to ∥ A T A ∥ $\parallel {A}^{T}A\parallel $ for an optimal support matrix A $A$.
Yuly Billig
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WIREs Energy and Environment, Volume 12, Issue 1, January/February 2023., 2023 Application of small‐signal analysis tools for power‐electronic‐dominated systems. Abstract The stability, operation, and control of power networks have been challenged due to the increased penetration of power electronic converters. New instability phenomena have appeared due to the interaction of the power converter controllers with other power ...
Marc Cheah‐Mane +5 more
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Tongxin xuebao, 2012 The direction deviations of the calibration sources would significantly degrade the calibration accuracy of array gain-and-phase errors.Aiming to this problem,a robust calibration algorithm for gain-and-phase errors against the location deviations was ...
Ding WANG, Hui YAO, Ying WU
doaj
On the Relations between Eigenvalues and Eigenvectors for Matrices Resulting from Pre and Post Multiplication by the Transpose [PDF]
, 1968 V. J. Law, R. H. Fariss
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Independent Sets of Random Trees and Sparse Random Graphs
Journal of Graph Theory, EarlyView.ABSTRACT An independent set of size k $k$ in a finite undirected graph G $G$ is a set of k $k$ vertices of the graph, no two of which are connected by an edge. Let xk ( G ) ${x}_{k}(G)$ be the number of independent sets of size k $k$ in the graph G $G$ and let α ( G ) = max { k ≥ 0 : x k ( G ) ≠ 0 } $\alpha (G)=\max \{k\ge 0:{x}_{k}(G)\ne 0\}$. In 1987,
Steven Heilman
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Considering spatiotemporal evolutionary information in dynamic multi‐objective optimisation
CAAI Transactions on Intelligence Technology, EarlyView., 2023 Abstract Preserving population diversity and providing knowledge, which are two core tasks in the dynamic multi‐objective optimisation (DMO), are challenging since the sampling space is time‐ and space‐varying. Therefore, the spatiotemporal property of evolutionary information needs to be considered in the DMO.
Qinqin Fan +3 more
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Late Pleistocene–Holocene environmental fluctuations of southern Chihuahua Desert, Mexico
Journal of Quaternary Science, EarlyView.ABSTRACT Paleoenvironmental reconstructions from the Mexican Chihuahua Desert based on biological proxies are scarce, creating a gap in our understanding of the ecological responses to climate change in this water‐scarce region. Here, we present a paleoenvironmental reconstruction based on geochemical data and biological proxies such as ostracods and ...
C. M. Chávez‐Lara +4 more
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Journal of the Science of Food and Agriculture, EarlyView.Abstract Background Eggshell strength is crucial for ensuring high‐quality eggs, reducing breakage during handling, and meeting consumer expectations for freshness and integrity. Conventional methods of eggshell strength measurement are often destructive, time‐consuming and unsuitable for large‐scale applications.
Md Wadud Ahmed +4 more
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Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes
Laser &Photonics Reviews, EarlyView.Quasinormal modes (QNMs) offer a robust framework for understanding the physics of resonators. However, conceptual challenges arise in regions distant from resonators, where QNM fields exponentially grow. This growth is not unphysical, but gives rise to counterintuitive effects, which is explained by examining fundamentals of non‐Hermitian systems ...
Tong Wu +2 more
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Eigenvectors and maximal vectors in Boolean vector spaces [PDF]
, 1975 Ronald L. Sinzdak
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