2,077 research outputs found
Fort Collins and the Cache La Poudre River: An Integrated Greenway Vision
16 pages.
Contains references
Fort Collins and the Cache La Poudre River: An Integrated Greenway Vision
16 pages.
Contains references
Invariance: a Theoretical Approach for Coding Sets of Words Modulo Literal (Anti)Morphisms
Let be a finite or countable alphabet and let be literal
(anti)morphism onto (by definition, such a correspondence is determinated
by a permutation of the alphabet). This paper deals with sets which are
invariant under (-invariant for short).We establish an
extension of the famous defect theorem. Moreover, we prove that for the
so-called thin -invariant codes, maximality and completeness are two
equivalent notions. We prove that a similar property holds in the framework of
some special families of -invariant codes such as prefix (bifix) codes,
codes with a finite deciphering delay, uniformly synchronized codes and
circular codes. For a special class of involutive antimorphisms, we prove that
any regular -invariant code may be embedded into a complete one.Comment: To appear in Acts of WORDS 201
Gauge invariant MSSM inflaton
We argue that all the necessary ingredients for successful inflation are
present in the flat directions of the Minimally Supersymmetric Standard Model.
We show that out of many gauge invariant combinations of squarks, sleptons and
Higgses, there are two directions, , and , which are
promising candidates for the inflaton. The model predicts more than
e-foldings with an inflationary scale of GeV,
provides a tilted spectrum with an amplitude of and a
negligible tensor perturbation. The temperature of the thermalized plasma could
be as low as ~TeV. Parts of the inflaton potential
can be determined independently of cosmology by future particle physics
experiments.Comment: 4 revtex pages, some references added, stabilization of moduli and
supergravity effects are discusse
Symmetry Plays a Key Role in the Erasing of Patterned Surface Features
We report on how the relaxation of patterns prepared on a thin film can be
controlled by manipu- lating the symmetry of the initial shape. The validity of
a lubrication theory for the capillary-driven relaxation of surface profiles is
verified by atomic force microscopy measurements, performed on films that were
patterned using focused laser spike annealing. In particular, we observe that
the shape of the surface profile at late times is entirely determined by the
initial symmetry of the perturba- tion, in agreement with the theory. Moreover,
in this regime the perturbation amplitude relaxes as a power-law in time, with
an exponent that is also related to the initial symmetry. The results have
relevance in the dynamical control of topographic perturbations for
nanolithography and high density memory storage
Two-Sided Derivatives for Regular Expressions and for Hairpin Expressions
The aim of this paper is to design the polynomial construction of a finite
recognizer for hairpin completions of regular languages. This is achieved by
considering completions as new expression operators and by applying derivation
techniques to the associated extended expressions called hairpin expressions.
More precisely, we extend partial derivation of regular expressions to
two-sided partial derivation of hairpin expressions and we show how to deduce a
recognizer for a hairpin expression from its two-sided derived term automaton,
providing an alternative proof of the fact that hairpin completions of regular
languages are linear context-free.Comment: 28 page
Patient influence in home-based reablement for older persons : qualitative research
publishedVersio
Patient involvement during a pathway of home-based reablement for older persons : A longitudinal single-case study
publishedVersio
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