Results 31 to 40 of about 399 (175)

Manifolds in the Medial Premotor Cortex During Switching From Attending to Tapping to a Metronome

Annals of the New York Academy of Sciences, Volume 1558, Issue 1, April 2026.
Low‐dimensional manifolds emerged in neural populations of the medial premotor cortex of macaque monkeys while they performed an attend‐then‐synchronize tapping task with periodic visual stimuli. The neural dynamics followed an increasingly oscillatory trajectory from attending to tapping stages of the trial (left panel).
Dobromir Dotov, Abraham Betancourt, Jorge Gámez, Hugo Merchant   +3 more
wiley   +1 more source

Isochrones, traffic and DEMOgraphics [PDF]

Proceedings of the 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2013
Catchment area and reachability analysis, i.e., the area from which a location attracts visitors and the minimum distance to a target location, respectively, are interesting problems when studied in the context of time-parameterized networks, such as road networks affected by traffic.
Alexandros Efentakis, Nikos Grivas, George Lamprianidis, Georg Magenschab, Dieter Pfoser   +4 more
openaire   +2 more sources

Bifurcation of critical periods of a quintic system

Electronic Journal of Differential Equations, 2018
We investigate the critical period bifurcations of the system $$ \dot x = ix + x \bar x ( a x^3 + b x^2 \bar x + \bar x \bar x^2+d \bar x^3) $$ studied in [6].
Valery G. Romanovski, Maoan Han, Wentao Huang   +2 more
doaj  

Characterizing isochronous points and computing isochronous sections

Journal of Mathematical Analysis and Applications, 2009
We consider two-dimensional autonomous systems of differential equations $$\dot{x}=-y+\lambda x+P(x,y),\qquad \dot{y}=x+\lambda y+Q(x,y),$$ where $\lambda$ is a real constant and $P$ and $Q$ are smooth functions of order greater than or equal to two. These systems, so-called centre-focus type systems, have either a centre or a focus at the origin.
Algaba Durán, Antonio, Reyes Columé, Manuel   +1 more
openaire   +2 more sources

Microvascular Health as a Key Determinant of Organismal Aging

Advanced Science, Volume 12, Issue 47, December 18, 2025.
Abstract Aging is a complex, multifaceted process affecting all organ systems, with vascular aging playing a central role in organismal health decline. Beyond its role in circulation, the vascular system acts as a dynamic interface between tissues, influencing countless physiological functions such as tissue regeneration and repair, immune responses ...
Mattia Cenciarini, Andrea Uccelli, Francesca Mangili, Myriam Grunewald, Simone Bersini   +4 more
wiley   +1 more source

A proof of Bertrand's theorem using the theory of isochronous potentials [PDF]

, 2018
We give an alternative proof for the celebrated Bertrand's theorem as a corollary of the isochronicity of a certain family of ...
Rafael Ortega, Rojas, David, David Rojas, Ortega, Rafael   +3 more
core   +1 more source

Accurate calculation of path-length variation due to intrabeam scattering for an electron beam traversing a lattice

Physical Review Accelerators and Beams
In future storage rings, precise control of the electron-beam phase space will become increasingly important. A key challenge in these dynamics is maintaining the lattice’s isochronicity, which is crucial for applications such as optical stochastic ...
Zhilong Pan, Wenxuan Wu, Jingyuan Zhao, Chuanxiang Tang, Xiujie Deng, Alexander Wu Chao   +5 more
doaj   +1 more source

Skeletal Maturity and Age‐Related Changes in Immune Cells and Circulatory Factors Impair Large‐Scale Bone Regeneration

Aging Cell, Volume 24, Issue 10, October 2025.
Although the ribs are the only human bones capable of regenerating large‐scale defects, this remarkable ability declines with skeletal maturity and age. Here, we reproduce skeletal maturity and age‐related phenotypic changes in a mouse model of rib resection.
Luciana Yamamoto de Almeida, Catharine Dietrich, Ashleigh S. Hanner, Katelyn M. McTighe, Daniel Martin, NIDCD/NIDCR Genomics and Computational Biology Core, Todd Fairbanks, Thomas M. Link, John M. Le, Natasha Curry, Priyam Jani, Xin Gao, Wenli Yu, Francesca V. Mariani, Olivier Duverger, Janice S. Lee   +15 more
wiley   +1 more source

Solvable Nonlinear Evolution PDEs in Multidimensional Space

Symmetry, Integrability and Geometry: Methods and Applications, 2006
A class of solvable (systems of) nonlinear evolution PDEs in multidimensional space is discussed. We focus on a rotation-invariant system of PDEs of Schrödinger type and on a relativistically-invariant system of PDEs of Klein-Gordon type.
Francesco Calogero, Matteo Sommacal
doaj  

The lowermost last‐glacial equilibrium line altitude in the Taiwanese Central Mountain Range and its implications for the palaeoclimate and the tropospheric moisture transport in East Asia

Journal of Quaternary Science, Volume 40, Issue 5, Page 831-846, July 2025.
ABSTRACT The high mountains of Taiwan provide a unique location for Quaternary palaeoclimate research in East Asia and the north‐western Pacific. This study applies geomorphological field mapping and rock surface exposure dating with paired (10Be/26Al) in situ‐produced terrestrial cosmogenic nuclides to identify and date glacial landforms and boulders ...
Robert Hebenstreit, Jacob Hardt, Margot Böse   +2 more
wiley   +1 more source