Results 71 to 80 of about 179,491,323 (208)

Radar tracking and motion-sensitive cameras on flowers reveal the development of pollinator multi-destination routes over large spatial scales [PDF]

, 2012
Central place foragers, such as pollinating bees, typically develop circuits (traplines) to visit multiple foraging sites in a manner that minimizes overall travel distance.
Chittka, Lars, Reynolds, Andrew M., Chittka, L, Ka S Lim, Ralph J. Stelzer, Lihoreau, M, Ralph J Stelzer, Andrew M. Reynolds, Ka S. Lim, Stelzer Ralph J., Osborne Juliet L., Ka S. Lim (137973), Alan D. Smith, Mathieu Lihoreau, Raine Nigel E., Juliet L Osborne, Chittka Lars, Nigel E. Raine¤b, Ralph J. Stelzer (137971), Osborne, Juliet L., Osborne, JL, Nigel E Raine, Reynolds, Andrew M, Mathieu Lihoreau (137965), Chittka, L., Stelzer, RJ, Lihoreau, M., Lihoreau Mathieu, Stelzer, Ralph J., Lars Chittka (27016), Raine, N. E., Smith, Allan, Reynolds Andrew M., Lim, Ka, Andrew M Reynolds, Raine, Nigel E., Smith, AD, Reynolds, A. M., Juliet L. Osborne¤c, Smith, A. D., Andrew M. Reynolds (137969), Lim, KS, Raine, Nigel, Raine, NE, Stelzer, Ralph, Alan D Smith, Smith, Alan D., Reynolds, AM, Lars Chittka, Lim Ka S., Lihoreau, Mathieu, Nigel E. Raine (75421), Stelzer, R. J., Osborne, J. L., Juliet L. Osborne (107697), Alan D. Smith (137975), Lim, K. S., Lim, Ka S., Smith Alan D.   +58 more
core   +1 more source

An Extended Method of Multiple Scales

Abstract Perturbation techniques have long proven useful for analytically describing the dynamics of weakly nonlinear systems. The Method of Multiple Scales (MMS) is one such technique, popular for its versatility and structured approach to handling systems with multiple underlying time scales.
Nidish Narayanaa Balaji, Max J. Miller III, D. Dane Quinn   +2 more
openaire   +1 more source

Stabilizing Ferroresonance Oscillations in Voltage Transformers Using Limiter Circuit

Electronics, 2012
This paper employs the multiple scales method and chaos theory for analyzing chaotic behavior of the voltage transformer (VT) with linear core loss model.
Hamid Radmanesh, Seyed Hamid Fathi
doaj   +1 more source

Bifurcation Analysis for a Simple Dual-Rotor System with Nonlinear Intershaft Bearing Based on the Singularity Method

Shock and Vibration, 2020
This paper aims to classify bifurcation modes for two interrelated primary resonances of a simple dual-rotor system under double frequency excitations. The four degree-of-freedom (4DOF) dynamic equations of the system considering the nonlinearity of the ...
Peng Gao, Yushu Chen, Lei Hou
doaj   +1 more source

On the use of the multiple scale method in solving ‘difficult’ bifurcation problems [PDF]

Mathematics and Mechanics of Solids, 2015
Several algorithms consisting in ‘non-standard’ versions of the Multiple Scale Method are illustrated for ‘difficult’ bifurcation problems. Preliminary, the ‘easy’ case of bifurcation from a cluster of distinct eigenvalues is addressed, which requires using integer power expansions, and it leads to bifurcation equations all of the same order.
openaire   +2 more sources

Some curiosites about the Engel method to estimate equivalence scales [PDF]

This paper lends legitimacy to the food share as an indicator of welfare by demonstrating the conditions necessary in empirical work for the Engel method of estimating equivalence scales to provide an exact measure of welfare.
Federico Perali
core  

Computer algebra models dynamics on a multigrid across multiple length and time scales [PDF]

, 2007
Methods for modelling dynamics posit just two time scales: a fast and a slow scale. But many applications, including many in continuum mechanics, possess a wide variety of space-time scales; often they possess a continuum of space-time scales.
Roberts, A. J.
core   +1 more source

Multiscale Information Decomposition: Exact Computation for Multivariate Gaussian Processes

Entropy, 2017
Exploiting the theory of state space models, we derive the exact expressions of the information transfer, as well as redundant and synergistic transfer, for coupled Gaussian processes observed at multiple temporal scales.
Luca Faes, Daniele Marinazzo, Sebastiano Stramaglia   +2 more
doaj   +1 more source

Remaining Useful Life Prediction for Nonlinear Degraded Equipment With Bivariate Time Scales

IEEE Access, 2019
As the fundamental and prerequisite work of remaining useful life (RUL) prediction, degradation modeling directly affects the accuracy of RUL prediction.
Hong Pei, Changhua Hu, Xiaosheng Si, Jianfei Zheng, Qi Zhang, Zhengxin Zhang, Zhenan Pang   +6 more
doaj   +1 more source

Development of a method and an assessment construct for person-centered translation of dementia public stigma scales

Frontiers in Public Health
BackgroundWith the number of people with dementia dramatically increasing over time and dementia becoming a major health concern worldwide, scales have been developed to assess the stigma socially attached to this neurodegenerative disorder.
Junfeng Lu, Yi Shan, Meng Ji, Lee-Fay Low, Sarang Kim, Annica Barcenilla-Wong, Sam Shen, Weiwei Chu   +7 more
doaj   +1 more source