3,725 research outputs found
The K-process on a tree as a scaling limit of the GREM-like trap model
We introduce trap models on a finite volume -level tree as a class of
Markov jump processes with state space the leaves of that tree. They serve to
describe the GREM-like trap model of Sasaki and Nemoto. Under suitable
conditions on the parameters of the trap model, we establish its infinite
volume limit, given by what we call a -process in an infinite -level
tree. From this we deduce that the -process also is the scaling limit of the
GREM-like trap model on extreme time scales under a fine tuning assumption on
the volumes.Comment: Published in at http://dx.doi.org/10.1214/13-AAP937 the Annals of
Applied Probability (http://www.imstat.org/aap/) by the Institute of
Mathematical Statistics (http://www.imstat.org
Molding procedure for casting a variety of alloys
General procedure and molding sand composition for preparing molds usable for casting variety of alloys are developed. Molds are prepared from mixture of sand, sodium silicate binder, and organic liquid ester. Castings of radiographic quality are produced from various alloys
Repulsion of an evolving surface on walls with random heights
We consider the motion of a discrete random surface interacting by exclusion
with a random wall. The heights of the wall at the sites of are i.i.d.\
random variables. Fixed the wall configuration, the dynamics is given by the
serial harness process which is not allowed to go below the wall. We study the
effect of the distribution of the wall heights on the repulsion speed.Comment: 8 page
Aspectos relacionados com a utilização da gradagem do solo nas entrelinhas de plantio de coqueiros.
Efeito de sistemas de manejo sobre a recuperação de coqueiral em produção.
Estuda o efeito da adubacao e do manejo das entrelinhas, sobre a recuperacao de um coqueiral em fase de producao.bitstream/item/87952/1/CPATC-PESQ.-AND.-24-98.pd
Influência da posição e entalhe da semente sobre a velocidade de germinação e qualidade da muda do coqueiro (Cocos nucifera L.).
bitstream/item/81713/1/CPATC-COM.-TEC.-23-98.pd
Efeito de sistemas de manejo sobre o desenvolvimento de coqueiros jovens.
bitstream/item/81818/1/CPATC-COM.-TEC.-31-91.pd
Two-Dimensional Scaling Limits via Marked Nonsimple Loops
We postulate the existence of a natural Poissonian marking of the double
(touching) points of SLE(6) and hence of the related continuum nonsimple loop
process that describes macroscopic cluster boundaries in 2D critical
percolation. We explain how these marked loops should yield continuum versions
of near-critical percolation, dynamical percolation, minimal spanning trees and
related plane filling curves, and invasion percolation. We show that this
yields for some of the continuum objects a conformal covariance property that
generalizes the conformal invariance of critical systems. It is an open problem
to rigorously construct the continuum objects and to prove that they are indeed
the scaling limits of the corresponding lattice objects.Comment: 25 pages, 5 figure
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