Many lake ecosystems that have been severely disturbed by eutrophication, also experienced large human efforts to restore “natural” conditions. However, the trajectories and extent of recovery these are still poorly understood. In many shallow lakes, was often delayed counter-clockwise hysteretic. Here, we study ecosystem in a deep using diatom remains sediment cores time series phosphorus conc...

Micro electro-mechanical systems (MEMS), such as piezoelectric loudspeakers are widely used for ultrasound applications. Designing advanced MEMS can be challenging, since nonlinear physical effects may have a significant impact. Piezoelectricity couples the mechanical and electrostatic field directly via material law, which is often hysteretic. In many applications, only steady-state solution o...

In this paper we present experimental data on the frequency domain response of a superconducting-quantum-interference-device ring (a Josephson weak link enclosed by a thick superconducting ring) coupled to a radio frequency tank circuit resonator. We show that with the ring weakly hysteretic the resonance line shape of this coupled system can display opposed fold bifurcations that appear to tou...

In this work, we use time-resolved photoluminescence (PL) spectroscopy, microscopy, and current measurements to characterize the slow transient responses of methylammonium lead triiodide (MAPbI3) on a lateral interdigitated electrode device. By systematically varying the applied bias magnitude and electrode polarity, we observed distinct reversible and irreversible PL transient responses in the...

From our investigation of magnetoelectric properties of a multiferroic phase in Eu0.75Y0.25MnO3 competing with a weak-ferromagnetic phase in magnetic fields, we found intriguing hysteretic behaviors of physical properties with variation of temperature and magnetic field. These hysteretic behaviors arise from the kinetic arrest (dearrest) processes of the first-order multiferroic-weak-ferromagne...

HARMONICS M arten Sj ostr om and Bertrand Dutoit Chair of Circuits and Systems, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland [email protected] Abstract| The classic Preisach model is used to describe a general hysteretic behaviour, and as most nonlinear systems, its output contains higher harmonics. A Fourier analysis of a speci c class of weighting functions for th...

The paper presents a new algorithm for ECG signal compression based on local extreme extraction, adaptive hysteretic filtering and LZW coding. Basically the method consists in smoothing the ECG signal with a Savitzky-Golay filter, extraction of the local minima and maxima, a hysteretic filtering and LZW coding. The reconstruction of the ECG signal is done by cubic interpolation. The algorithm i...

The multiphase nature of the flow in porous media is characterized by hysteretic effects on the macroscopic level. These effects have a significant influence on the behavior of the whole system and therefore have to be taken into account. The aim of this subproject is to develop and implement models describing the hysteresis in the context of the CO2 sequestration process.The hysteresis relatio...

This article investigates the effects and transmission channels of shocks between two asymmetric neighboring countries. In particular, we investigate Austria and Germany which are highly integrated due to their common language and common membership of the European Monetary Union. Generalized impulse response functions reveal that there are large and significant effects of shocks to the German e...

The magnetic field and temperature dependence of the low-frequency ( fo104 HzÞ inand out-of-phase magnetic response of antiferromagnetically coupled Fe/Cr(1 0 0) shows that at T > 100K both the real ðw0Þ and imaginary ðw00Þ parts of the susceptibility exhibit hysteretic dependence on the magnetic field with maxima of w00ðHÞ at HE725Oe. At T 1⁄4 2K the losses exhibit an unusual strong frequency ...