Results 41 to 50 of about 103,833 (268)
ABSTRACT Pediatric supportive care clinical trials often involve multiple clinically important outcomes, complicating trial interpretation. Hierarchical composite endpoints (HCEs) provide a framework to integrate key outcomes according to clinical importance.
Willem H. Collier +11 more
wiley +1 more source
On a representation of linear differential equations
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Generalized singular exponents linear system of differential equations
Consider a finite-dimensional linear homogeneous system of differential equations with continuous bounded coefficients in an infinite interval in critical cases of singular exponents.
A. E. Mirzakulova +3 more
doaj
On bounded solutions of differential systems
The question of the existence of bounded solutions on an infinite interval of a linear inhomogeneous system of ordinary differential equations in a finite-dimensional space is considered. The study of bounded solutions of systems of ordinary differential
T. M. Aldibekov
doaj
Some general conditions sufficient for unique solvability of the boundary-value problem for a system of linear functional differential equations of the second order are established.
Natalia Dilna
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Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia
ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas +3 more
wiley +1 more source
Polynomial quasisolutions of linear differential-difference equations [PDF]
The paper discusses a linear differential-difference equation of neutral type with linear coefficients, when at the initial time moment \(t=0\) the value of the desired function \(x(t)\) is known. The authors are not familiar with any results which would
Valery B. Cherepennikov +1 more
doaj
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida +6 more
wiley +1 more source
On Linear Differential Equations with Retarded Arguments
The idea of using fixed points of the lag in a linear differential equation with retarded argument, was proposed by \textit{G. Karakostas} [Boll. Unione Mat. Ital., V. Ser. A 17, 428-435 (1980; Zbl 0455.34047)] and is widely applied here to a system of the form \(\dot x(t)=\sum^{k}_{i=1}A_ i(t)x[\sigma_ i(t)]+b(t).\) The authors discuss solutions with ...
Staikos, V. A., Tsamatos, P. C.
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The paper belongs to the qualitative theory of half-linear equations which are located between linear and non-linear equations and, at the same time, between ordinary and partial differential equations.
Hasil Petr, Veselý Michal
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