Results 141 to 150 of about 328 (263)

Galinstan Liquid Metal/Polyurethane Composite as a Multifunctional Stretchable Electrode and Piezoresistive Strain Sensor With Minimal Drift

open access: yesAdvanced Materials Technologies, EarlyView.
Liquid metal additives are processed in elastomer host resulting in highly conductive and stretchable composites. The material functions as a piezoresistive sensor with minimal drift, low stiffness, and enhanced operating range. The film can replace wires to charge a mobile phone at ∼350% strain and monitors bodily motion in real‐time via a portable ...
Patryk Wojciak   +3 more
wiley   +1 more source

Desirable portfolios in fixed income markets: Application to credit risk premiums

open access: yes, 2016
An arbitrage opportunity in a financial market provides a risk-free investment atno cost. As an alternative to the classical arbitrage methods, we define a more generalconcept in portfolio selection, called desirable opportunities, through introducingan ...
Okhrati, Ramin
core  

Evaluation of individual and ensemble probabilistic forecasts of COVID-19 mortality in the United States. [PDF]

open access: yesProc Natl Acad Sci U S A, 2022
Cramer EY   +295 more
europepmc   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe   +4 more
wiley   +1 more source

Urban Area Development in Stochastic Cellular Automata [PDF]

open access: yes
Urban is still an interesting topic to discuss whether in government or public studies. As economy grows in cities, many people are attracted to come to cities from villages to try their luck.
Ivan Mulianta, Yun Hariadi
core  

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

open access: yesAdvanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón   +5 more
wiley   +1 more source

Portfolio Value-at-Risk with Time-Varying Copula: Evidence from the Americas

open access: yes
Model risk in the estimation of value-at-risk is a challenging threat for the success of any financial investments. The degree of the model risk increases when the estimation process is constructed with a portfolio in the emerging markets.
Ozun, Alper, Cifter, Atilla
core  

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