Results 101 to 110 of about 2,643,984 (289)

Binary-Relational Storage Structures [PDF]

open access: yesThe Computer Journal, 1982
Any database, no matter how complex, can be represented as a set of binary-relationships. Consequently, a structure which can store such binary-relationships is logically sufficient as the storage mechanism for a general purpose database management system.
openaire   +1 more source

Programmable Elastic Wave Control Via Mechanical‐Acoustic Interaction in Bistable Metamaterials

open access: yesAdvanced Science, EarlyView.
A mechanically programmable metamaterial based on mechanical‐acoustic interaction enables reconfigurable elastic wave control through bistable state switching. Spatial encoding of peak and valley states tunes band structures and transmission, achieving low‐frequency vibration suppression, waveguiding, and energy localization.
Yuanyuan Li   +7 more
wiley   +1 more source

The Path Containment Condition And Argument Structure

open access: yesKansas Working Papers in Linguistics, 1988
This study investigates the internal structure of verb phrases (VPs). Using the Path Containment Condition as developed by May (1985) to establish relations between (quantified) arguments, this study draws two conclusions about the structure of argument ...
Stroik, Thomas S.
doaj   +1 more source

CauFinder: Steering Cell‐State and Phenotype Transitions by Causal Disentanglement Learning

open access: yesAdvanced Science, EarlyView.
CauFinder combines causal disentanglement modeling and network control to prioritize causal drivers of cell‐state transitions from observational transcriptomic data. The framework separates transition‐relevant signals from spurious associations, nominates intervention targets across biological and disease contexts, and identifies DAAM1 as an actionable
Chengming Zhang   +11 more
wiley   +1 more source

Non‐Noble Metal Nanocatalysts for Hydrogen Evolution

open access: yesAdvanced Science, EarlyView.
Recent overviews and latest developments of diverse classes of non‐noble catalysts for application toward high‐performance photocatalysis, thermocatalytic steam reforming, and electrocatalysis. Toward sustainability objectives, several advanced characterization tools in combination with the latest breakthroughs in machine learning for material ...
Lina Jaya Diguna   +7 more
wiley   +1 more source

A Note on a Binary Relation Corresponding to a Bipartite Graph

open access: yesITM Web of Conferences, 2018
In this paper, we firstly define a binary relation corresponding to the bipartite graph and study its properties. We also establish a relationship between the independent sets of the bipartite graph and the definable sets of binary relations ...
Sarı Hatice Kübra, Kopuzlu Abdullah
doaj   +1 more source

Halide Perovskite: A Rich Source of Thermal Insulator

open access: yesAdvanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye   +3 more
wiley   +1 more source

Nanoscale Optical Inhomogeneities From Compositional Segregation Within Individual GaN‐on‐Si Quantum Wells

open access: yesAdvanced Science, EarlyView.
This work visualizes local variations in luminescence and relates them to nanoscale chemical inhomogeneities in single InxGa1−xN quantum wells. We demonstrate that the elemental segregation is only inherent to quantum wells with high indium content. Density functional theory shows this to be the result of strain‐induced phase stabilization, explaining ...
Jing‐Yang Chung   +12 more
wiley   +1 more source

On transitive subrelations of binary relations

open access: yesThe Journal of Symbolic Logic, 2011
AbstractThe transitive closure of a binary relation R can be thought of as the best possible approximation of R “from above” by a transitive relation. We consider the question of approximating a relation from below by transitive relations. Our main result is that every thick relation (a relation whose complement contains no infinite chain) on a ...
openaire   +2 more sources

Rational relations of binary trees [PDF]

open access: yes, 1977
By extending the idea behind transductions by Elgot & Mezei [1965] (or equivalently, K-transductions by Nivat [1968], a-transducers by Ginsburg & Greibach [1969], or rational relations by Eilenberg [1974]), we define a class of tree transformations called rational relations of binary trees.
openaire   +1 more source

Home - About - Disclaimer - Privacy