Results 31 to 40 of about 2,867,234 (274)
The center--focus problem and small amplitude limit cycles in rigid systems
Discrete & Continuous Dynamical Systems - A, 2012 In this paper we study the center--focus problem in families of rigid systems. We give explicit necessary and sufficient conditions to the unique equilibrium to be a center. We also study small amplitude limit cycles in these families of systems.
Fabio Scalco Dias, Luis Fernando Mello
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Multi-store collaborative delivery optimization based on Top-K order-split.
PLoS ONE, 2023 Regarding the fulfillment optimization of online retail orders, many researchers focus more on warehouse optimization and distribution center optimization.
Yanju Zhang, Liping Ou, Jiaxu Liu
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Swiftly Computing Center Strings
BMC Bioinformatics, 2011 Background The center string (or closest string) problem is a classic computer science problem with important applications in computational biology. Given k input strings and a distance threshold d, we search for a string within Hamming distance at most ...
Jahn Katharina +4 more
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Frontiers in Psychology, 2022 Preservice mathematics teachers’ accurate understanding of mathematical problem solving and its teaching is key to the performance of their professional quality.
Peijie Jiang +4 more
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Research on the Poincaré center-focus problem of some cubic differential systems by using a new method [PDF]
Advances in Difference Equations, 2017 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhengxin Zhou, Fangfang Mao, Yuexin Yan
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Adolescent siblings of children with cancer are at elevated risk for psychosocial problems. Unfortunately, various barriers such as limited family time and resources, conflicting schedules, and psychosocial staffing constraints at cancer centers hinder sibling access to support.
Christina M. Amaro +10 more
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Acta et Commentationes: Ştiinţe Exacte şi ale NaturiiIn this work we find the center conditions for a cubic system of differential equations with a critical point of a center or a focus type having one invariant straight line and one invariant conic. The center-focus problem is studied by using the Darboux
Dumitru Cozma
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Социальная психология и общество, 2018 The article highlights the results of a comprehensive study of collective feelings in relation to significant social phenomena among students resident in the district center in comparison with the capital’s students. The sample was 127 people (67 people —
Emelyanova T.P., Drobysheva T.V.
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Mathematics, 2022 Multi-center location of pharmaceutical logistics is the focus of pharmaceutical logistics research, and the dynamic uncertainty of pharmaceutical logistics multi-center location is a difficult point of research.
Zhiyuan Yuan, Jie Gao
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Neuropsychological complications may impair the qualitative prognosis of patients with pediatric brain tumors. However, multifaceted evaluations cannot be conducted in all patients because they are time consuming and burdensome for patients.
Ami Tabata +9 more
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