Results 21 to 30 of about 165 (122)
Linearizability Problem of Resonant Degenerate Singular Point for Polynomial Differential Systems
Journal of Applied Mathematics, 2012 The linearizability (or isochronicity) problem is one of the open problems for polynomial differential systems which is far to be solved in general. A progressive way to find necessary conditions for linearizability is to compute period constants.
Yusen Wu, Cui Zhang, Luju Liu
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Beat Hierarchy and Beat Patterns—From Aksak to Composite Meter
Current Musicology, 2014 In his study of Steve Reich’s phase–shifting music, Richard Cohn points to a specific analytical challenge that transcends the repertoire at hand: “Given the relative poverty of our rhythmic terminology, the challenge for the theorist is to discover a ...
Aleksandra Vojcic
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The Problem of Bicenter and Isochronicity for a Class of Quasi Symmetric Planar Systems
Abstract and Applied Analysis, 2014 We study a class of quasi symmetric seventh degree systems and obtain the conditions that its two singular points can be two centers at the same step by careful computing and strict proof. In addition, the condition of an isochronous center is also given.
Du Chaoxiong
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Quasi-isochronous storage rings [PDF]
Physical Review E, 1993 A study is made of the single-particle dynamics of an electron-positron storage ring where the phase-slip factor is made small in order to make the ring nearly isochronous and reduce the bunch length. What is found is that a quasi-isochronous ring makes it possible to obtain a bunch length in the millimeter range, about one order of magnitude shorter ...
Robin, David +3 more
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, 2022 Critical Quarterly, Volume 64, Issue 4, Page 138-154, December 2022.
David Nowell Smith
wiley +1 more source
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 +15 more
wiley +1 more source
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 +2 more
wiley +1 more source
Journal of Cachexia, Sarcopenia and Muscle, Volume 16, Issue 2, April 2025.ABSTRACT Background β2‐Microglobulin (B2M) has garnered considerable interest as a potential pro‐ageing factor, leading to speculation about its involvement in muscle metabolism and the development of sarcopenia, a key component of ageing phenotypes.
Shibo Wei +13 more
wiley +1 more source
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 +2 more
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Journal of Morphology, Volume 286, Issue 2, February 2025.We devised novel staging criteria for near‐hatching embryos of the Mallard (Anas platyrhynchos) and Swan Goose (Anser cygnoides) based on four easily measurable morphological traits. We show that our staging criteria are robust against interbreed variation and allow for correct stage identification with over 70% accuracy.
Bassel Arnaout +3 more
wiley +1 more source