Results 31 to 40 of about 6,898 (176)

Global phase portraits of uniform isochronous centers with quartic homogeneous polynomial nonlinearities [PDF]

, 2015
Agraïments: The first author is is supported by a Ciência sem Fronteiras-CNPq grant number 201002/ 2012-4. A CAPES grant number 88881.030454/2013-01 from the program CSF-PVEWe classify the global phase portraits in the Poincar\'e disc of the differential
Itikawa, Jackson, Llibre, Jaume
core   +2 more sources

Complexity reduction of C-algorithm

, 2010
The C-Algorithm introduced in [Chouikha2007] is designed to determine isochronous centers for Lienard-type differential systems, in the general real analytic case.
Bardet, Boussaada, Chen, Chen, Cox, Dolicanin, Dumortier, Islam Boussaada, Magali Bardet, Raouf Chouikha, Raouf Chouikha, Romanovski, Sabatini   +12 more
core   +3 more sources

The behavior of structures based on the characteristic strain model of creep [PDF]

, 2011
There has been much work over the past two decades to aid the design and assessment engineer in the selection of a suitable material model of creep for high temperature applications.
Boyle, James
core   +1 more source

Frontier Research on Isochronous Accelerator and Its Applications at China Institute of Atomic Energy Since the 21st Century

Yuanzineng kexue jishu
Isochronous cyclotrons hold an indispensable position in national security and the science and technology innovation system. In the new era, there is an urgent demand for breakthroughs in compact structure, high energy, and high beam intensity of ...
ZHANG Tianjue, FU Wei, WANG Chuan, YIN Zhiguo, JIA Xianlu, AN Shizhong, LI Pengzhan, ZHOU Hongji, SONG Guofang, CHEN Xinyu
doaj   +1 more source

Integrability and Pseudo-Linearizable Conditions in a Quasi-Analytic System

Abstract and Applied Analysis, 2012
This paper deals with the problems of integrability and linearizable conditions at degenerate singular point in a class of quasianalytic septic polynomial differential system.
Feng Li, Yusen Wu
doaj   +1 more source

Critical Periods of Perturbations of Reversible Rigidly Isochronous Centers [PDF]

Abstract and Applied Analysis, 2013
We study the problem of bifurcation of critical periods of a time-reversible polynomial system of degreen. We first present a new method to find the number of zeros of the period function. Then applying our results, we study the number of critical periods for some polynomial systems and obtain new results.
Zhou, Jiamei, Li, Na, Han, Maoan
openaire   +3 more sources

Nonlocal observables and lightcone-averaging in relativistic thermodynamics

, 2009
The unification of relativity and thermodynamics has been a subject of considerable debate over the last 100 years. The reasons for this are twofold: (i) Thermodynamic variables are nonlocal quantities and, thus, single out a preferred class of ...
A Einstein, A Gamba, A Komar, A Montakhab, AS Eddington, C Cercignani, C Liu, C Liu, CK Yuen, CL Bennett, CW Misner, D Cubero, D Ter Haar, DG Currie, F Debbasch, F Jüttner, G Amelino-Camelia, H Arzelies, H Arzelies, H Ott, HB Callen, HB Callen, HC Öttinger, J Berges, J Dunkel, JA Wheeler, JD Bekenstein, Jörn Dunkel, LD Landau, M Campisi, M Planck, MHL Pryce, NG Van Kampen, NG Van Kampen, NG Van Kampen, Peter Hänggi, PT Landsberg, PT Landsberg, R Hakim, RU Sexl, S Lloyd, S Weinberg, Stefan Hilbert, V Marra   +43 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

On the period function of Newtonian systems [PDF]

, 2013
We study the existence of centers of planar autonomous system of the form $$(S) \quad \dot x=y,\qquad \dot y = -h(x) - g(x)y - f(x)y^2.$$ We are interested in the period function $T$ around a center 0. A sufficient condition for the isochronicity of (
Chouikha, A. Raouf, Timoumi, Mohsen
core   +1 more source

HBT radii from the UrQMD transport approach at different energies [PDF]

, 2011
We present results on Hanbury Brown-Twiss (HBT) radii extracted from the Ultra-relativistic Molecular Dynamics (UrQMD) approach to relativistic heavy ion collisions.
Bleicher, Marcus, Gräf, Gunnar, Li, Qingfeng, Lisa, Mike, Mount, Elliott, Petersen, Hannah   +5 more
core   +1 more source