A complete set of harmonic force constants describing the DNA deformation energetics at the base pair level was obtained using unrestrained atomic-resolution molecular dynamics simulations of selected duplex oligonucleotides and subsequent analysis of structural fluctuations from the simulated trajectories. The deformation was described by the six base pair conformational parameters (buckle, pr...

Xn r e c e n t y e a r s t h e n a t u r e and t h e r o l e o f a m o r p h o l o g i c a l component in NLP s y s t e m s ha s a t t r a c t e d a l o t o f a t t e n t i o n . The two-level model of Koskenniemi which relates graphemlc t o m o r p h o l o g i c a l s t r u c t u r e ha s been s u c c e s f u l l y imp lemen ted in t h e form o f f i n i t e s t a t e a u t o m a t a . Xn EURO...

Recent developments in philosophical studies of belief revision have led to the construction of models that are much closer to actual computing systems than the earlier models. An operation of contraction (revision) on a logically closed belief set can be obtained by assigning to it a finite belief base and an operation of contraction (revision) on that base. Exact characterizations of such bas...

As we apply cognitive models to complex, temporally extended tasks, removing declarative knowledge from memory, or forgetting, will become important both to model human behavior, as well as to scale computationally. The base-level activation (BLA) model predicts that the availability of specific memories is sensitive to frequency and recency of use. Memory decay based on this model has long bee...

This paper describes a new formalism based on multi-level networked knowledge (MLNK), a combination of different ontologies describing heterogeneous and complementary domains aligned with semantic correspondences. Ontology alignments make explicit the correspondences between terms from different ontologies and must be taken into account in reasoning, where two explicit form of correspondences a...

Though the experimental studies on the activation of “photodynamic” medications was only published 1999, the FDA approved the use of the ALA (Aminolevulinic) in the dermatologic field. In substance, the PDT by using photosensitive medicines at a topical level (ALA and MAL), a luminous source with an appropriate wavelength for their activation, set the formation of protoporphyrin IX and when it ...

introduction: trauma due to accidents or fall from height is a major cause of disability and mortality. the present study was designed aiming to evaluate the baseline characteristics of fall from height victims presenting to emergency department (ed). methods: this prospective cross-sectional study evaluates the baseline characteristics of fall from height cases presenting to eds of three educa...