Results 91 to 100 of about 1,323,147 (330)

Machine Learning‐Based Design of 3D‐Printable Microneedles for Enhanced Tissue Anchoring with Reduced Tissue Damage

Advanced Engineering Materials, EarlyView.
A machine learning‐driven framework is introduced to optimize 3D‐printable microneedles for enhanced tissue anchoring and reduced insertion damage. The optimized design achieves a 6.0‐fold improvement in pull‐out‐to‐penetration energy ratio over conventional shapes.
Jegyeong Ryu, Jiyeop Kim, Chan Wook Park, Hae‐Yoon Kim, Deukhee Lee, Amy Kyungwon Han   +5 more
wiley   +1 more source

A note on accelerating cosmologies from compactifications and S-branes

, 2003
We give a simple interpretation of the recent solutions for cosmologies with a transient accelerating phase obtained from compactification in hyperbolic manifolds, or from S-brane solutions of string/M-theory.
A recent discussion can be found in G.W. Gibbons, A. Lukas, Further properties of hyperbolic compactifications can be found in N. Kaloper, I.P.C. Heard, Jaume Garriga, M. Kruczenski, M.N.R. Wohlfarth, N. Ohta, N.S. Deger, N.S. Deger, P.K. Townsend, Roberto Emparan, S. Roy, S. Roy, T. Barreiro   +14 more
core   +1 more source

Asymptotic behavior of non-autonomous stochastic Boussinesq lattice system

AIMS Mathematics
In this paper, we investigate the existence of a random uniform exponential attractor for the non-autonomous stochastic Boussinesq lattice equation with multiplicative white noise and quasi-periodic forces.
Ailing Ban
doaj   +1 more source

A panoramic view of exponential attractors

We state necessary and sufficient conditions for the existence of $T$-discrete exponential attractors for semigroups in complete metric spaces. These conditions are formulated in terms of a covering condition for iterates of the absorbing set under the time evolution of the semigroup and imply the existence and finite-dimensionality of the global ...
Czaja, Radoslaw, Sonner, Stefanie
openaire   +2 more sources

Evaluation Strategies of Hil48 Yield Criterion in Application: Toward Sufficient and Necessary Conditions for Prediction of Plastic Anisotropy

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive analysis of the intrinsic relationships and applicability of Hill48 yield criterion. The applicability and error evaluation conditions for Hill48 are established based on specific experimental data. A parameter calibration strategy for N‐value based on error minimization is proposed, and the predictive accuracy is ...
Jinxin Wang, Zhenkai Mu, Longfei He, Wei Wang, Shuangjie Zhang, Yuzhong Liu, Huajun Yan, Xuerui Dai, Shibo Ma, Yong Hou   +9 more
wiley   +1 more source

Inflation as an attractor in scalar cosmology

, 2013
We study an inflation mechanism based on attractor properties in cosmological evolutions of a spatially flat Friedmann-Robertson-Walker spacetime based on the Einstein-scalar field theory. We find a new way to get the Hamilton-Jacobi equation solving the
Kim, Hyeong-Chan
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

Dynamical analysis for a scalar–tensor model with Gauss–Bonnet and non-minimal couplings

European Physical Journal C: Particles and Fields, 2017
We study the autonomous system for a scalar–tensor model of dark energy with Gauss–Bonnet and non-minimal couplings. The critical points describe important stable asymptotic scenarios including quintessence, phantom and de Sitter attractor solutions. Two
L. N. Granda, D. F. Jimenez
doaj   +1 more source

Nano‐Patterned CuO Nanowire Nanogap Hydrogen Gas Sensor with Voids

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Sub‐5‐ppb hydrogen (H2) detection and sub‐10‐s response and recovery times are achieved based on nano‐patterned polycrystalline CuO nanowires nanogap gas sensors with voids using electron‐beam lithography and unique annealing processes. Pre‐H2 annealing, void‐generating oxidation, and downscaled nanogap electrodes are key to improving the sensing ...
Muqing Zhao, Ryosuke Nitta, Seiichiro Izawa, Jun‐ichi Yamaura, Yutaka Majima   +4 more
wiley   +1 more source

Heteroclinic Chaos, Chaotic Itinerancy and Neutral Attractors in Symmetrical Replicator Equations with Mutations

, 2000
A replicator equation with mutation processes is numerically studied. Without any mutations, two characteristics of the replicator dynamics are known: an exponential divergence of the dominance period, and hierarchical orderings of the attractors.
Chawanya T., Chawanya T., Eckmann J. P., Hofbauer J., Hofbauer J., Kaneko K., May R. M., May R. M., Smith J. M., Taylor P., Tokita K., Yoshikawa E.   +11 more
core   +2 more sources