نتایج جستجو برای: hysteresis cycle

تعداد نتایج: 286050  

Journal: :Nanotechnology 2010
David Estrada Sumit Dutta Albert Liao Eric Pop

We describe a pulsed measurement technique for suppressing hysteresis for carbon nanotube (CNT) device measurements in air, vacuum, and over a wide temperature range (80-453 K). Varying the gate pulse width and duty cycle probes the relaxation times associated with charge trapping near the CNT, found to be up to the 0.1-10 s range. Longer off times between voltage pulses enable consistent, hyst...

2000
H. N. Man X. D. Jing

A network model that investigates electrical resistivity and capillary pressure curves of oil/water/rock systems for a full̄ooded cycle (primary drainage, imbibition and secondary drainage) is presented. This model uses a realistic pore geometry in the form of a grain boundary pore (GBP) shape and pore constrictions. The model also incorporates pore-scale displacement mechanisms and pore-scale w...

Journal: :BioEssays : news and reviews in molecular, cellular and developmental biology 2008
Alexander Y Mitrophanov Eduardo A Groisman

Feedback loops have been identified in a variety of regulatory systems and organisms. While feedback loops of the same type (negative or positive) tend to have properties in common, they can play distinctively diverse roles in different regulatory systems, where they can affect virulence in a pathogenic bacterium, maturation patterns of vertebrate oocytes and transitions through cell cycle phas...

A. IZADY B. GHAHRAMAN K. DAVARI

Hysteresis has been widely recognized in the soil water relationship. In this paper, a detailed review of hysteresis was performed in relation to its models. So far, different models have been suggested to describe hysteresis in the water retention curve (WRC) that could be categorized into two main groups: conceptual and empirical models. The models in the first group are based on the domain t...

2004
Xinghuo Yu Fengling Han Yong Feng Guanrong Chen

This paper discusses the domain of attraction and its sensitivity for a class of chaotic attractors generated by using second-order linear systems with hysteresis-series. It is found that the domain of attraction of the chaotic attractors is determined by an unstable limit cycle. The chaotic dynamical behaviors are demonstrated by using the Poincaré map. The sensitivity of the domain of attract...

2011
Mario Alberto Garcia Ramirez

This paper proposes a new non-volatile semiconductor memory which features a suspended gate integrated with silicon nanocrystals dots as a floating gate and the MOSFET as a readout. Performing three-dimensional finite element simulations combined with an analytical plate-capacitor model, we clarify the pull-in/pull-out operation of the suspended gate. We also show the dependence of the hysteres...

2010
Alexander Makarov Josef Weinbub Viktor Sverdlov Siegfried Selberherr

A microscopic model of the resistive switching mechanism in bipolar metal-oxide based resistive random access memory (RRAM) is presented. The distribution of electron occupation probabilities obtained is in agreement with previous work. In particular, a low occupation region is formed near the cathode. A hysteresis cycle of RRAM switching simulated with the model including the ion dynamics is i...

2013
Xin Jia Tianshan Zha Bin Wu Yuqing Zhang Wenjing Chen Xiaoping Wang Haiqun Yu Guimei He

Although the temperature response of soil respiration (Rs ) has been studied extensively, several issues remain unresolved, including hysteresis in the Rs -temperature relationship and differences in the long- vs. short-term Rs sensitivity to temperature. Progress on these issues will contribute to reduced uncertainties in carbon cycle modeling. We monitored soil CO2 efflux with an automated ch...

2017
Aravind Premanand

Fatigue damage is considered to be one of the most critical phenomenon, contributing to the failure of an aircraft structure. Understanding the fatigue mechanism is essential for considering the different technical conditions that influence the fatigue life of structures. In recent years, fatigue tests are accelerated in order to reduce the testing time of materials/structures being developed, ...

Journal: :New Astronomy 2021

We study galactic cosmic ray (GCR) modulation during solar cycle 24. For this we utilize neutron monitor data together with sunspot number (SSN) and 10.7 cm radio flux (SRF) data. plot hysteresis curve between the GCR intensity SSN, SRF. performed time-lag correlation analysis to determine time lag activity parameters. The is determined not only for whole cycle, but also two polarity states of ...

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