Results 41 to 50 of about 327,898 (294)
On the Number of Nonnegative Solutions to the Inequality a1 +....ar < n [PDF]
, 2010 In this paper, we present a simple and fast method for counting the number of nonnegative integer solutions to the equality a1x1+a2x2+: : :+arxr = n where a1; a2; :::; ar and n are positive integers.
Farzaneh , A. +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro +11 more
wiley +1 more source
Existence of rotating-periodic solutions for nonlinear second order vector differential equations
Journal of Inequalities and Applications, 2020 In this paper, we establish two existence theorems of rotating-periodic solutions for nonlinear second order vector differential equations via the Leray–Schauder degree theory and the lower and upper solutions method.
Jin Zhang, Xue Yang
doaj +1 more source
3D ultimate limit state analysis using discontinuity layout optimization [PDF]
, 2012 The recently developed discontinuity layout optimization (DLO) procedure uses limit analysis theory to directly obtain upper bounds on plane strain collapse loads of bodies and has successfully been applied to geotechnical problems.
Hawksbee, Samuel John
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Some New Bounds for Mathieu's Series [PDF]
, 2007 In the paper, an upper bound and two lower bounds for Mathieu’s series are established, which refine to a certain extent a sharp double inequality obtained by Alzer-Brenner-Ruehr in 1998.
Qi, Feng +4 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási +14 more
wiley +1 more source
Upper and lower solutions method for a class of second-order coupled systems
Boundary Value ProblemsThis paper provides a class of upper and lower solution definitions for second-order coupled systems by transforming the fourth-order differential equation into a second-order differential system.
Zelong Yu, Zhanbing Bai, Suiming Shang
doaj +1 more source
Existence of traveling wave solutions with critical speed in a delayed diffusive epidemic model
Advances in Difference Equations, 2019 In this paper, we prove the existence of a critical traveling wave solution for a delayed diffusive SIR epidemic model with saturated incidence. Moreover, we establish the nonexistence of traveling wave solutions with nonpositive wave speed for this ...
Yueling Cheng +3 more
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On the method of upper and lower solutions in abstract cones [PDF]
Annales Polonici Mathematici, 1983 Consider the initial value problem (*) \(u'=f(t,u) u(0)=u_ 0 t\in I=[0,T]\) in the real B-space E. Let K be the normal cone in E and \(K^*\) its dual. Using the cone K one can define the partial order in E. If \(v_ 0\), \(w_ 0:I\to E\) are such that \(v_ 0(t)\leq w_ 0(t)\) for any \(t\in I\), let \([v_ 0,w_ 0]\) be the corresponding conical segment in ...
Lakshmikantham, V., Leela, S.
openaire +2 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Immune effector cell‐associated hemophagocytic lymphohistiocytosis‐like syndrome (IEC‐HS) is a life‐threatening hyperinflammatory toxicity distinct from cytokine release syndrome (CRS) and neurotoxicity following chimeric antigen receptor T‐cell (CAR‐T) therapy. In a single‐institution retrospective cohort of pediatric and young adult patients
Thomas J. Galletta +6 more
wiley +1 more source