We discuss the origin of the difference between the harmonic value of the width of the multiphonon giant resonances and the smaller observed value. Analytical expressions are derived for both the effective width and the average cross-section. The contribution of the Brink-Axel mechanism in resolving the discrepancy is pointed out. . ∗Supported in part by CNPq and FAPESP.

Grammar-based surface realizers require inputs compatible with their reversible, constraint-based grammars, including a proper representation of unbounded dependencies and coordination. In this paper, we report on progress towards creating realizer inputs along the lines of those used in the first surface realization shared task that satisfy this requirement. To do so, we augment the Universal ...

The operation of power systems has become more challenging due to feed-in of volatile renewable energy sources. Chance-constrained optimal power flow (ccOPF) is one possibility to explicitly consider volatility via probabilistic uncertainties resulting in mean-optimal feedback policies. These policies are computed before knowledge of the realization of the uncertainty is available. On the other...

this study set out to investigate the distribution of the syntactic properties associatedwith the prodrop parameter by persian-speaking l2 learners of english in an attemptto examine the (un)attainability of native-like knowledge and (in)accessibility of ugin adult sla. to do so, 92 participants were assigned into different levels of l2knowledge based on their performances on the oxford placeme...

One critical challenge to security for distributed applications (which consist of legacy, COTS, databases, clients, etc.) is managing access to available resources (and their APIs). An engineered solution is critical to insure that clients are restricted to select portions of resource APIs at different times and under specific conditions. This work offers a constraint-based role security model ...

Sliding mode is used in order to retain a dynamic system accurately at a given constraint and is the main operation mode in variable structure systems. Such mode is a motion on a discontinuity set of a dynamic system and features theoretically-infinite-frequency switching. The standard sliding modes are known to feature finite time convergence, precise keeping of the constraint and robustness w...

This paper focuses on generating referring expressions capable of serving multiple communicative goals. The components of a referring expression are divided into a referring part and a non-referring part. Two rules for the content determination and construction of the non-referring part are given, which are realised in an embedding algorithm. The significant aspect of our approach is that it in...

The graph realization problem is to find for given nonnegative integers a1, . . . , an a simple graph (no loops or multiple edges) such that each vertex vi has degree ai. Given pairs of nonnegative integers (a1, b1), . . . , (an, bn), (i) the bipartite realization problem ask whether there is a bipartite graph (no loops or multiple edges) such that vectors (a1, ..., an) and (b1, ..., bn) corres...

For tractability, many modern geometric constraint solvers recursively decompose an input geometric constraint system into standard collections of smaller, generically rigid subsystems or clusters. These are recursively solved and their solutions or realizations are recombined to give the solution or realization of the input constraint system. The recombination of a standard collection of solve...