Results 71 to 80 of about 5,673,730 (326)

Hysteresis and economics - taking the economic past into account [PDF]

, 2009
The goal of this article is to discuss the rationale underlying the application of hysteresis to economic models. In particular, we explain why many aspects of real economic systems are hysteretic is plausible.
Cross, Rod, Grinfeld, Michael, Lamba, Harbir   +2 more
core   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Linear and nonlinear modulus surfaces in stress space, from stress-strain measurements on Berea sandstone [PDF]

Nonlinear Processes in Geophysics, 2003
The elastic response of many rocks to quasistatic stress changes is highly nonlinear and hysteretic, displaying discrete memory. Rocks also display unusual nonlinear response to dynamic stress changes.
M. Boudjema, I. B. Santos, K. R. McCall, R. A. Guyer, G. N. Boitnott   +4 more
doaj  

Hysteretic ac loss of superconducting strips simultaneously exposed to ac transport current and phase-different ac magnetic field

, 2006
A simple analytical expression is presented for hysteretic ac loss $Q$ of a superconducting strip simultaneously exposed to an ac transport current $I_0\cos\omega t$ and a phase-different ac magnetic field $H_0\cos(\omega t+\theta_0)$.
Kajikawa, Kazuhiro, Mawatari, Yasunori
core   +1 more source

Solution‐Processed Spin‐Polarized Light‐Emitting Diodes of Colloidal Quantum Wells and Magnetic Nanoparticles

Advanced Optical Materials, EarlyView.
All‐solution‐processed spin‐LEDs based on colloidal Fe3O4 nanoparticles and CdSe/CdZnS core/shell CQWs that allows for polarization modulation of electroluminescence are fabricated. With these devices, electrical injection of spin‐polarized carriers from the Fe3O4 nanoparticle layer into the CdSe/CdZnS CQWs is demonstrated, realizing circularly ...
Savas Delikanli, Arinjoy Bhattacharya, Betul Canimkurbey, Chang Huai, Amani Almutairi, Arman Najafi, Hilal Korkut, Farzan Shabani, Furkan Isik, James Pientka, Ibrahim Sarpkaya, Hao Zeng, Richard D. Schaller, Athos Petrou, Hilmi Volkan Demir   +14 more
wiley   +1 more source

Strain-induced kinetics of intergrain defects as the mechanism of slow dynamics in the nonlinear resonant response of humid sandstone bars [PDF]

, 2004
A closed-form description is proposed to explain nonlinear and slow dynamics effects exhibited by sandstone bars in longitudinal resonance experiments. Along with the fast subsystem of longitudinal nonlinear displacements we examine the strain-dependent ...
A. M. Kosevich, B. V. Derjaguin, B. V. Derjaguin, C. Zener, F. A. L. Dullien, G. G. Stokes, J. A. Ten Cate, J. A. Ten Cate, James A. Ten Cate, K. E.-A. Van Den Abeele, N. N. Bogolyubov, N. V. Vasylenko, Oleksiy O. Vakhnenko, Thomas J. Shankland, Vyacheslav O. Vakhnenko   +14 more
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Hysteretic resistance spikes in quantum Hall ferromagnets without domains

, 2007
We use spin-density-functional theory to study recently reported hysteretic magnetoresistance \rho_{xx} spikes in Mn-based 2D electron gases [Jaroszy\'{n}ski et al. Phys. Rev. Lett. (2002)].
Henrique J. P. Freire, J. Carlos Egues, S. H. Vosko, W. Kohn   +3 more
core   +1 more source

Generalized Mechanism Model for Ecosystem Hysteresis

Advanced Science, EarlyView.
A simplified model examines ecosystem transitions into alternative states after disturbances by leveraging positive and negative feedbacks. It identifies critical tipping points and quantifies hysteresis. Tests conducted on lakes, grasslands, and pitcher‐plant leaves align closely with empirical data and enable the prediction of recovery trajectories ...
Yanbin Hao, Xin Wang, Jie Liu, Mingzi Wu, Jianqing Du, Kai Xue, Xiaoning Song, Xiaoyong Cui, Tong Zhao, Yanfen Wang   +9 more
wiley   +1 more source

Streamflow Hysteresis Analysis Through a Deep‐Dive Budget of the St Venant Equation Momentum Terms

Water Resources Research
Hysteretic conditions, characterized by non‐unique relationships and temporal phasing of flow variables, are common in unsteady open‐channel flows. Hysteresis effects can lead to significant discharge estimation errors when using traditional, unique ...
E. House, E. Meselhe, M. Muste, I. Demir
doaj   +1 more source