Results 11 to 20 of about 1,011,396 (219)

Periodic solutions with prescribed minimal period to Hamiltonian systems

open access: yesJournal of Inequalities and Applications, 2020
In this article, we study the existence of periodic solutions to second order Hamiltonian systems. Our goal is twofold. When the nonlinear term satisfies a strictly monotone condition, we show that, for any T > 0 $T>0$ , there exists a T-periodic ...
Huafeng Xiao, Zupei Shen
doaj   +1 more source

Clinical efficiency evaluation of minimal dental restorations on occlusal teeth surfaces [PDF]

open access: yesStomatološki glasnik Srbije, 2004
Minimal dental restoration of occlusal surfaces using sealing for prevention, preserve sound tooth structure. The aim of this study was to clinicaly assess the performance of three different techniques in minimal dental restoration.
Živojinović Vesna, Marković Dejan
doaj   +1 more source

Blast Resistance in Sandwich Structures Based on TPMS

open access: yesBuildings, 2023
This study analyzes the blast resistance in triple-period minimal surface (TPMS) sandwich panel structures with a cellular structure. The explosion test of the TPMS sandwich panel was carried out, and experimental data verified the effectiveness of the ...
Li He   +5 more
doaj   +1 more source

Optimal Initial Synchronization Time in the Minimal 6TiSCH Configuration

open access: yesIEEE Access, 2021
6TiSCH is an emerging networking technology proposed by IETF for the Industrial Internet of Things. As a result of its standardization effort, IETF has proposed the so-called minimal 6TiSCH configuration, which sets the minimal requirements for building ...
Apostolos Karalis   +2 more
doaj   +1 more source

Transition us together: development of a parent-centered toolkit to support adolescents with rheumatic disease transition to adult care

open access: yesJournal of Transition Medicine, 2022
While the transition period can be a difficult time for adolescents with chronic health conditions, parents also face challenges in understanding their changing role and how to support their children.
Dushnicky Molly J.   +5 more
doaj   +1 more source

Periodic Solutions with Minimal Period for Fourth-Order Nonlinear Difference Equations

open access: yesDiscrete Dynamics in Nature and Society, 2018
A fourth-order nonlinear difference equation is considered. By making use of critical point theory, some new criteria are obtained for the existence of periodic solutions with minimal period.
Xia Liu   +4 more
doaj   +1 more source

Comparative analysis of the postoperative period after laparoscopic cholecystectomy and minimal laparotomical access

open access: yesZaporožskij Medicinskij Žurnal, 2014
INTRODUCTION: The aim of our study was to compare cholecystectomy from the minimum access laparotomy (CMAL) and laparoscopic cholecystectomy (LC) with respect to complications, operating time, postoperative length of hospital stay (PLOS). METHODS: One
V. N. Klimenko   +4 more
doaj   +1 more source

The Existence of rG Family and tG Family, and Their Geometric Invariants

open access: yesMathematics, 2020
In the 1990s, physicists constructed two one-parameter families of compact oriented embedded minimal surfaces in flat three-tori by using symmetries of space groups, called the rG family and tG family.
Norio Ejiri, Toshihiro Shoda
doaj   +1 more source

A Note on the Minimal Period Problem for Second Order Hamiltonian Systems

open access: yesAbstract and Applied Analysis, 2014
We study periodic solutions of second order Hamiltonian systems with even potential. By making use of generalized Nehari manifold, some sufficient conditions are obtained to guarantee the multiplicity and minimality of periodic solutions for second order
Huafeng Xiao
doaj   +1 more source

Tiling Periodicity [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2010
We contribute to combinatorics and algorithmics of words by introducing new types of periodicities in words. A tiling period of a word w is partial word u such that w can be decomposed into several disjoint parallel copies of u, e.g.
Juhani Karhumaki   +2 more
doaj   +1 more source

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