Results 41 to 50 of about 20,201,183 (253)

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine   +17 more
wiley   +1 more source

Optimal control of wave linear repetitive processes [PDF]

open access: yes, 2008
This paper gives new results on optimal control of the so-called wave discrete linear repetitive processes which find novel application in the modelling of physical examples.
Galkowski, K.   +3 more
core   +1 more source

Return condition for oscillating systems

open access: yesVisnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika
This paper is devoted to the problem of null-controllability for the oscillating linear system $\dot{x}_{2i-1} = x_{2i}, \dot{x}_{2i} = - x_{2i-1} + u$, $i = \overline{1,n}$ with constraints on the control $u \in [c, 1]$ and $u \in \{c, 1\}$ in the case ...
Oleh Vozniak, Valery Korobov
doaj   +1 more source

Compositional analysis for linear control systems [PDF]

open access: yesProceedings of the 13th ACM international conference on Hybrid systems: computation and control, 2010
The complexity of physical and engineering systems, both in terms of the governing physical phenomena and the number of subprocesses involved, is mirrored in ever more complex mathematical models. While the demand for precise models is indisputable, the analysis of such system models remains challenging.
Florian Kerber, Arjan van der Schaft
openaire   +2 more sources

Comparative Drug Response Profiling in Neuroblastoma Cell Lines and Patient‐Derived Tumor Organoids

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT High‐risk neuroblastoma remains a leading cause of pediatric cancer mortality, and improved preclinical models are needed to guide therapeutic developments. We screened seven high‐risk neuroblastoma cell lines and three patient‐derived tumor organoids with 528 compounds alongside bone marrow controls, and compared them with external datasets ...
Krzysztof Wierbiłowicz   +12 more
wiley   +1 more source

A 2D systems approach to iterative learning control for discrete linear processes with zero Markov parameters [PDF]

open access: yes, 2011
In this paper a new approach to iterative learning control for the practically relevant case of deterministic discrete linear plants with uniform rank greater than unity is developed.
Cai, Z   +5 more
core   +2 more sources

BIBO Stability of Linear Control Systems on Lie Group Examples

open access: yesMathematics
We develop a collection of nontrivial examples that illustrate and test recent stability results for linear control systems (LCS) on Lie groups. We treat the main structural classes: Abelian (Rn), nilpotent (Heisenberg), solvable non-nilpotent (rigid ...
Víctor Ayala   +2 more
doaj   +1 more source

Modal Control of Linear Time-Invariant Discrete-Time Systems

open access: yesMeasurement + Control, 1969
Modal control theory is applied to the design of feedback loops for linear time-invariant discrete-time systems. Modal theory is also used to demonstrate the explicit relationship which exists between the controllability of a mode of a discrete-time ...
B. Porter MA, PhD, CEng, MIMechE   +1 more
doaj   +1 more source

Linear quadratic power control for CDMA systems

open access: yesJournal of Telecommunications and Information Technology, 2003
In this paper, we present a robust decentralized method for jointly performing channel estimation and closed loop power control for the reverse link of CDMA networks. Our method, based on linear quadratic Gaussian (LQG) control systems theory and Kalman
Michael David Anderson   +1 more
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani   +7 more
wiley   +1 more source

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