Results 81 to 90 of about 115,718 (292)

A Distributed Newton Method for Network Utility Maximization

open access: yes, 2010
Most existing work uses dual decomposition and subgradient methods to solve Network Utility Maximization (NUM) problems in a distributed manner, which suffer from slow rate of convergence properties.
Jadbabaie, Ali   +2 more
core   +3 more sources

Data‐Driven Discovery of Quaternary Ammonium Interlayers for Efficient and Thermally Stable Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
An active learning framework, grounded in independently generated in‐house experimental data, enables reliable discovery of high‐performance interfacial materials for perovskite solar cells. Iterative model refinement autonomously converges toward structurally robust quaternary ammonium architectures, establishing a new design principle for interfacial
Jongbeom Kim   +8 more
wiley   +1 more source

Goldfishing by gauge theory

open access: yes, 2006
A new solvable many-body problem of goldfish type is identified and used to revisit the connection among two different approaches to solvable dynamical systems. An isochronous variant of this model is identified and investigated.
E. Langmann   +3 more
core   +1 more source

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

open access: yesAdvanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler   +7 more
wiley   +1 more source

An Analysis Model for Studying the Determinants of Throwing Scoring Actions During Standing Judo

open access: yesSports, 2019
In judo, the attacking system is grounded on several determinants of the chances to throw. In our study, data regarding four determinants of the attacking system were collected in order to classify the standing scoring actions: the attacking type (direct/
Xian Mayo   +2 more
doaj   +1 more source

BECOME and its presuppositions [PDF]

open access: yes, 2009
In hindsight, the debate about presupposition following Frege’s discovery that the referential function of names and definite descriptions depended on the fulfillment of an existence and a uniqueness condition was curiously limited for a very long time ...
Bierwisch, Manfred
core  

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald   +7 more
wiley   +1 more source

Linearized stability analysis of gravastars in noncommutative geometry

open access: yes, 2010
In this work, we find exact gravastar solutions in the context of noncommutative geometry, and explore their physical properties and characteristics. The energy density of these geometries is a smeared and particle-like gravitational source, where the ...
A DeBenedictis   +68 more
core   +1 more source

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li   +20 more
wiley   +1 more source

Comparison and association of performance indicators according to set outcome and set score difference in AVP women's beach volleyball

open access: yesFrontiers in Sports and Active Living
PurposeThis study aimed to analyze the association between technical-tactical performance indicators and the set outcome, game phase, and set score difference.MethodsIn total, 41 matches, 79 sets, and 14,959 game actions [serve: 2,879; serve reception: 2,
Yago Pessoa da Costa   +4 more
doaj   +1 more source

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