Results 101 to 110 of about 28,334 (302)

On the fractional partial integro-differential equations of mixed type with non-instantaneous impulses

open access: yesBoundary Value Problems, 2020
In this paper, we consider the initial boundary value problem for a class of nonlinear fractional partial integro-differential equations of mixed type with non-instantaneous impulses in Banach spaces.
Bo Zhu   +3 more
doaj   +1 more source

Hydrogen‐Bonding Networks Enabled by Trace Water for Morphological Design in Ternary Organic Solar Cells

open access: yesAdvanced Science, EarlyView.
Trace water transforms from an impurity to a design handle for ternary organic solar cells. During solvent evaporation, minimal amounts organize transient hydrogen‐bonding networks that steer component migration and set the morphology. The mechanism enables reproducible morphology locking and identifies a practical co‐solvent threshold near H2O:CF = 0 ...
Yue Ren   +6 more
wiley   +1 more source

The impact of sales promotions on store performance: a structural vector autoregressive (SVAR) approach. [PDF]

open access: yes
The paper analyses the impact of sales promotions on store performance, in the short and long term, from the retailer’s point of view. Relationships among promoted and regular sales in the hypermarkets of a large-scale retail chain of national importance,
Marzia Freo
core  

Chaos and energy spreading for time-Dependent Hamiltonians, and the various Regimes in the theory of Quantum Dissipation

open access: yes, 2000
We make the first steps towards a generic theory for energy spreading and quantum dissipation. The Wall formula for the calculation of friction in nuclear physics and the Drude formula for the calculation of conductivity in mesoscopic physics can be ...
Beck   +30 more
core   +1 more source

An Elastocaloric Polymer with Ultra‐High Solid‐State Cooling via Defect Engineering

open access: yesAdvanced Science, EarlyView.
This work reports a defect‐engineering strategy that enables a record‐high adiabatic temperature change of up to 8.14 ± 1.76 °C in elastomers at an elevated temperature above 65 °C. Combined experimental and theoretical efforts reveal that increasing dangling‐chain defects nonmonotonically impacts the elastocaloric cooling performance of polymers due ...
Zhaohan Yu   +11 more
wiley   +1 more source

Dissipative solitons for bistable delayed-feedback systems

open access: yes, 2018
We study how nonlinear delayed-feedback in the Ikeda model can induce solitary impulses, i.e. dissipative solitons. The states are clearly identified in a virtual space-time representation of the equations with delay, and we find that conditions for ...
Maistrenko, Yuri L.   +1 more
core   +1 more source

A Wearable System Featuring Biomimetic Spatially Distributed Iontronic Sensing Array for Dynamic Monitoring of Deep Tissue Modulus

open access: yesAdvanced Science, EarlyView.
A fully wearable system enables real‐time, dynamic, and accurate monitoring of Young's modulus in multilayer tissues containing deep muscle. It demonstrates high accuracy and robustness across simulations, benchtop validations, and human testing. It quantifies edema severity and tracks muscle stiffness during rest, loaded elbow flexion, rope skipping ...
Zhenning Wang   +12 more
wiley   +1 more source

A survey about framing the bases of Impulsive Mechanics of constrained systems into a jet-bundle geometric context

open access: yes, 2018
We illustrate how the different kinds of constraints acting on an impulsive mechanical system can be clearly described in the geometric setup given by the configuration space--time bundle $\pi_t:\mathcal{M} \to \mathbb{E}$ and its first jet extension ...
Pasquero, Stefano
core  

Nonemptyness and compactness of the solution set for fractional evolution inclusions with non-instantaneous impulses

open access: yesElectronic Journal of Differential Equations, 2019
In this article, we consider the nonemptyness and compactness of the solution set for a class of fractional semilinear evolution inclusions with non-instantaneous impulses in Banach spaces. To achieve this we use fixed point theorems with semigroup
Jinrong Wang   +2 more
doaj  

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