Results 41 to 50 of about 6,050,140 (310)

Essentially periodic ordered groups

open access: yesAnnals of Pure and Applied Logic, 2000
The authors introduce and study a number of notions extending that of an o-minimal group; i.e., they investigate totally ordered groups with certain restrictions on definable subsets. They also prove a number of interesting results relating the different notions. Some but not all of these notions are closed under elementary equivalence.
Françoise Point, Frank O. Wagner
openaire   +2 more sources

Computation of transfer function matrices of periodic systems [PDF]

open access: yes, 2002
We present a numerical approach to evaluate the transfer function matrices of a periodic system corresponding to lifted state-space representations as constant systems.
A. Varga, Varga, Andras
core   +1 more source

Computational Methods for Periodic Systems - An Overview [PDF]

open access: yes, 2001
We present an up-to-date survey of numerical methods for the analysis and design of linear discrete-time periodic systems. The basic tool is the periodic Schur form and its variants, for which a certain form of numerical stability can be ...
IFAC Workshop on Periodic Control Systems (PSYCO 2001)   +3 more
core  

On computing minimal realizations of periodic descriptor systems [PDF]

open access: yes, 2007
: We propose computationally efficient and numerically reliable algorithms to compute minimal realizations of periodic descriptor systems. The main computational tool employed for the structural analysis of periodic descriptor systems (i.e., reachability
Andras Varga, Varga, Andreas
core   +1 more source

Provider and Parent Perspectives on Prioritizing the “Asking and Monitoring” Pediatric Cancer Psychosocial Standards of Care

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The Standards for Psychosocial Care for Children with Cancer and Their Families (“Standards”) are evidence‐based guidelines for psychosocial care in pediatric oncology. Care related to the three “Asking and Monitoring” Standards—Assessment of Psychosocial Needs, Assessment of Financial Needs, and Monitoring Neurocognitive Problems ...
Julia B. Tager   +8 more
wiley   +1 more source

Bifurcations of periodic orbits and uniform approximations. [PDF]

open access: yes, 1997
We derive uniform approximations for contributions to Gutzwiller's periodic-orbit sum for the spectral density which are valid close to bifurcations of periodic orbits in systems with mixed phase space.
Schomerus, Henning, Sieber, Martin
core   +4 more sources

On normal automorphisms of n-periodic products of finite cyclic groups [PDF]

open access: yesInternational Journal of Group Theory, 2013
We prove that each normal automorphism of the$n$-periodic product of cyclic groups of odd order$rge1003$ is inner, whenever $r$ divides $n$.
Ashot Pahlevanyan   +3 more
doaj  

Periodic Complexes and Group Actions [PDF]

open access: yesThe Annals of Mathematics, 2001
In this paper we show that the cohomology of a connected CW complex is periodic if and only if it is the base space of an orientable spherical fibration with total space that is homotopically finite dimensional. As applications we characterize those discrete groups that act freely and properly on a cartesian product of euclidean space and a sphere; we ...
Adem, Alejandro, Smith, Jeff H.
openaire   +3 more sources

Safety and Effectiveness of a High‐Dose, Tailored Tissue Plasminogen Activator Therapy Protocol: A Joint Pediatric Hematology and Cardiac ICU Quality Improvement Initiative Analysis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric thromboembolism is increasingly encountered in critical care. Systemic thrombolysis with tissue plasminogen activator (tPA) facilitates vessel or valve patency, yet pediatric‐specific protocols remain undefined, and safety concerns persist. Objective To evaluate the efficacy and safety of a tailored, prolonged systemic tPA
Eran Shostak   +5 more
wiley   +1 more source

PFAPA (periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis) syndrome in children; surgical versus medical treatment?

open access: yesMedicine Science, 2021
PFAPA (periodic fever, aphthous stomatitis, pharyngitis, and cervical lymphadenopathy) syndrome usually presents in childhood and one of the most common periodic fever syndromes.
Yuksel Toplu   +3 more
doaj   +1 more source

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