Results 121 to 130 of about 5,242,931 (310)

Perfect Powers In Smarandache Type Expressions

open access: yes, 2004
The author showed that there are only finitely many numbers of the above form which are products of factorials.
openaire   +3 more sources

Ultrathin Amphipathic Dual‐Polymer Networks: Unlocking Hyper‐Permeable CO2 Capture via Solvent‐Mediated Poly(Ethylene Oxide) Amorphization

open access: yesAdvanced Functional Materials, EarlyView.
Hydrophilic PEO‐copolymers and hydrophobic PDMS are physically integrated via a compatibilizing solvent into an amphipathic dual‐polymer network with versatile interfacial affinity and completely amorphized PEO segments for hyper‐permeable CO2 transport.
Ji Wu   +9 more
wiley   +1 more source

BPA Prepares for the 21st Century.

open access: yes, 1998
This is a brief review of the state of the Bonneville Power Administration. It reviews BPA`s competitive status, fish and wildlife funding, cost structure of the federal system, subscription sales of electricity, emergency cost recovery, cost reduction ...
United States. Bonneville Power Administration.
core   +1 more source

Robust Linear MIMO in the Downlink: A Worst-Case Optimization with Ellipsoidal Uncertainty Regions

open access: yesEURASIP Journal on Advances in Signal Processing, 2008
This paper addresses the joint robust power control and beamforming design of a linear multiuser multiple-input multiple-output (MIMO) antenna system in the downlink where users are subjected to individual signal-to-interference-plus-noise ratio (SINR ...
Tung-Sang Ng, Kai-Kit Wong, Gan Zheng
doaj   +1 more source

Effects of LLZO Microstructure Porosity, LLZO/Li‐Metal Interfacial Polarization Resistance, and Applied Areal Current Density on Li‐Metal Dendrite Formation in LLZO Bilayer Symmetric Cells

open access: yesAdvanced Functional Materials, EarlyView.
The effects of solid‐state electrolyte architecture and electrolyte/electrode interfacial polarization resistance on Critical Current Density and the risks for “interfacial” and “internal” Li‐metal dendrite formation were investigated in simulations of FIB‐reconstructed porous‐dense Li7La3Zr2O12 (LLZO) “bilayers”, providing insight for full cells ...
Tanner R. Hamann   +2 more
wiley   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou   +19 more
wiley   +1 more source

Numerical Optimization of Metamaterial-Enhanced Infrared Emitters for Ultra-Low Power Consumption

open access: yesPhotonics
This study addresses the challenges of high-power consumption and complexity in conventional infrared (IR) gas sensors by integrating metamaterials and gold coatings into IR radiation sources to reduce radiation loss.
Bui Xuan Khuyen   +13 more
doaj   +1 more source

Unified Pressure and Field Response Across Distinct Charge‐Order Regimes in Ti‐Doped CsV3Sb5

open access: yesAdvanced Functional Materials, EarlyView.
We microscopically investigate the interplay between charge order and superconductivity in a kagome superconductor across regimes of long‐ and short‐range charge order. Hydrostatic‐pressure and magnetic‐field μSR$\mu{\rm SR}$ measurements reveal remarkably similar superconducting and normal‐state time‐reversal‐symmetry‐breaking responses in both ...
P. Kral   +12 more
wiley   +1 more source

A Refinement of Perfect Equilibria Based On Substitute Sequences [PDF]

open access: yes
We propose an equilibrium refinement of strict perfect equilibrium for the finite normal form games, which is not known in the literature. Okada came up with the idea of strict perfect equilibrium by strengthening the main definition of a perfect ...
C. D. Aliprantis, I. Topolyan
core  

PARTITION FUNCTIONS THAT REPEL PERFECT-POWERS

open access: yesAnnals of the Academy of Romanian Scientists Series on Mathematics and Its Application
A conjecture by Sun states that the partition function p(n), for n >1, is never a perfect power. Recent work by Merca et al. proposes generalizations of perfect-power repulsion for p(n). In this note, we prove these generalizations for the functions pB(n), which count the number of partitions of n with the largest part ≤ B. If B ≥ 4 and k ≥3, with k
openaire   +2 more sources

Home - About - Disclaimer - Privacy