Zobrazeno 1 - 10
of 37
pro vyhledávání: '"James R, Ward"'
Autor:
Frances Early, Patricia Mary Wilson, Christi Deaton, Ian Wellwood, Hena Wali Haque, Sarah Emma Fox, Azka Yousaf, Oliver D. Meysner, James R. Ward, Sally J. Singh, Jonathan Paul Fuld
Publikováno v:
ERJ Open Research, Vol 6, Iss 1 (2020)
Externí odkaz:
https://doaj.org/article/076674b0a8a94f9f84048094a891bb71
Autor:
James R. Ward Jr.
Publikováno v:
Electronic Journal of Differential Equations, Vol Conference, Iss 15, Pp 399-415 (2007)
We prove new non-resonance conditions for boundary value problems for two dimensional systems of ordinary differential equations. We apply these results to the existence of solutions to nonlinear problems. We then study global bifurcation for such sy
Externí odkaz:
https://doaj.org/article/6121efae38404874be70a87b575043a5
Autor:
James R. Ward, Chan-Gyun Kim
Publikováno v:
Applied Mathematics Letters. 24:1400-1404
In this work, we give nonresonance conditions for a singular quasilinear two-point boundary value problem { ( φ p ( u ′ ) ) ′ + h ( t ) f ( t , u ) = k ( t , u , u ′ ) , a.e. in ( 0 , 1 ) , u ( 0 ) = u ( 1 ) = 0 , where φ p ( x ) = | x | p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89296e3631ab084df187be6aca06f102
https://doi.org/10.1016/j.aml.2011.03.019
https://doi.org/10.1016/j.aml.2011.03.019
Autor:
James R. Ward
Publikováno v:
Advanced Nonlinear Studies. 8:655-662
We consider the boundary value problem u″ + g(u)u = h(t, u, u′) u(0) = 0, u(π) = 0 with g continuous, periodic, and positive and h continuous and bounded. It is shown that there is a solution if the mean value of g is not the square of an intege
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cd7d1ec0fdd519d2bcef22151e86987
https://doi.org/10.1515/ans-2008-0402
https://doi.org/10.1515/ans-2008-0402
Autor:
James R. Ward
Publikováno v:
Advanced Nonlinear Studies. 5:375-392
Global bifurcation in boundary value problems for systems of ordinary differential equations is studied. Rotation numbers are associated with solutions and are shown to be invariant along bifurcating continua. This invariance is then used to analyze
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::959135e922b311caba7ea740de2bc3d0
https://doi.org/10.1515/ans-2005-0304
https://doi.org/10.1515/ans-2005-0304
Autor:
James R. Ward, Jean Mawhin
Publikováno v:
Journal of the London Mathematical Society. 58:733-747
We prove Landesman-Lazer type existence conditions for the solutions bounded on the real line, together with their first derivatives, for some second order nonlinear differential equations of the form x " + cx' + f(t, x) = 0. The proofs use upper and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff4575f20e4eb5090b600a3e3c15a9fc
https://doi.org/10.1112/s0024610798006784
https://doi.org/10.1112/s0024610798006784
Autor:
Robert Stephen Cantrell, James R. Ward
Publikováno v:
SIAM Journal on Applied Mathematics. 57:1311-1327
Two competing species, denoted B and C, currently inhabit a common habitat patch. Left alone, B can be expected to exclude C from the patch over time. An exotic species A is introduced into the patch. A competes with both B and C. Absent B, A can als
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f916d55cdf313030cf21174296df3945
https://doi.org/10.1137/s0036139995292367
https://doi.org/10.1137/s0036139995292367
Publikováno v:
Risk analysis : an official publication of the Society for Risk Analysis. 34(8)
In recent years, the healthcare sector has adopted the use of operational risk assessment tools to help understand the systems issues that lead to patient safety incidents. But although these problem-focused tools have improved the ability of healthc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::0265a75d9c9e758d658c6597f7758e3b
https://pubmed.ncbi.nlm.nih.gov/24341726
https://pubmed.ncbi.nlm.nih.gov/24341726
Publikováno v:
2013 IEEE Intelligent Vehicles Symposium Workshops (IV Workshops).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4eabb0f8308f415b0bd0f2ff591328f8
https://doi.org/10.1109/ivworkshops.2013.6615221
https://doi.org/10.1109/ivworkshops.2013.6615221
Autor:
James R. Ward
Publikováno v:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics. 126:725-738
A general continuation theorem for isolated sets in infinite-dimensional dynamical systems is proved for a class of semiflows. This result is then used to prove the existence of continua of full bounded solutions bifurcating from infinity for systems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa4108e9a6eea4ae8c1d3fc1d542e276
https://doi.org/10.1017/s0308210500023039
https://doi.org/10.1017/s0308210500023039