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Ecological boundaries in the context of hierarchy theory
(ELSEVIER SCI LTD, 2008-06)
Ecological boundaries have been described as being multiscalar or hierarchical entities. However, the concept of the ecological boundary has
not been explicitly examined in the context of hierarchy theory. We explore how ...
A strategy to implement Dirichlet boundary conditions in the context of ADER finite volume schemes. One-dimensional conservation laws
(Pergamon-Elsevier, 2016)
ADER schemes are numerical methods, which can reach an arbitrary order of accuracy in both space and time. They are based on a reconstruction procedure and the solution of generalized Riemann problems. However, for general ...
Toward conceptual cohesiveness: A historical analysis of the theory and utility of ecological boundaries and transition zones
(2007)
Ecological transition zones are increasingly recognized as systems that play a critical role in controlling or modifying flows of organisms, materials, and energy across landscapes. Many concepts describing transitional ...
Fundamental solutions and dual boundary element methods for fracture in plane Cosserat elasticity
(Royal Soc, 2015)
In this paper, both singular and hypersingular fundamental solutions of plane Cosserat elasticity are derived and given in a ready-to-use form. The hypersingular fundamental solutions allow to formulate the analogue of ...
Boundary singularities of solutions of semilinear elliptic equations with critical Hardy potentials
(Elsevier, 2015)
We study the boundary behavior of positive functions u satisfying (E) - Delta u-kappa/d(2)(x)u+g(u) = 0 in a bounded domain ohm of R-N, where 0 < kappa <= 1/4, g is a continuous nondecreasing function and d(.) is the ...
On the detection of a moving obstacle in an ideal fluid by a boundary measurement
(2008)
In this paper, we investigate the problem of the detection of a moving obstacle
in a perfect fluid occupying a bounded domain in R2 from the measurement of
the velocity of the fluid on one part of the boundary. We show ...
Micro-structured materials: inhomogeneities and imperfect interfaces in plane micropolar elasticity, a boundary element approach
(Elsevier, 2017)
In this paper we tackle the simulation of microstructured materials modelled as heterogeneous Cosserat media with both perfect and imperfect interfaces. We formulate a boundary value problem for an inclusion of one plane ...
Quantum theory of the effect of grain boundaries on the electrical conductivity of thin films and wires
(Elsevier, 2015)
We calculate the electrical conductivity of a metallic sample under the effects of distributed impurities
and a random distribution of grain boundaries by means of a quantum mechanical procedure based on
Kubo formula. ...
Geostatistical estimation of mineral resources with soft geological boundaries: a comparative study
(SOUTH AFRICAN INST MINING METALLURGY, 2006-08)
Mineral resource evaluation requires defining geological domains that differentiate the types of mineralogy, alteration and lithology. Usual practice is to consider the domain boundaries as hard, i.e. data from across the ...
Nonlinear problems with solutions exhibiting a free boundary on the boundary
(GAUTHIER-VILLARS/EDITIONS ELSEVIER, 2005)
We prove existence of nonnegative solutions to -Delta u + u = 0 on a smooth bounded domain Omega subject to the singular boundary derivative condition partial derivative u/partial derivative v = -u(-beta) + lambda f (x, ...