We explore ways to enhance the utility of PVS for evaluating, testing, and animating PVS specifications. The PVS ground evaluator is the focus of the work. We describe a mechanism to provide semantic attachments for PVS symbols while preserving soundness, and discuss strategies to provide a generic framework for integrating independently developed applications with PVS. We explore these capabil...

SAR spaceborne capability to detect marine oil spills through the damping of wind generated short gravitycapillary waves has been extensively demonstrated during the past years. In contrast, it has not yet been found any suitable method which exploits VIS/NIR imagery supporting SAR observations. To this end, we propose the use of MODIS and MERIS images acquired in sunglint conditions to reveal ...

Blind channel identiication techniques based on second order statistics are investigated for multiuser systems employing Direct-Sequence/Code-Division Multiple-Access (DS/CDMA). The methods exploit knowledge of the spreading code of the user of interest via matched ltering, as well as properties of spreading codes. Two schemes are presented: one for deterministic short sequence DS/CDMA and a me...

The whole point of exact arithmetic is to generate answers to numeric problems, within some user-speci1ed error. An implementation of exact arithmetic is therefore of questionable value, if it cannot be shown that it is generating correct answers. In this paper, we show that the algorithms used in an exact real arithmetic are correct. A program using the functions de1ned in this paper has been ...

S lakes, and estuaries are among the most highly invaded ecosystems in the world; in many of them, alien organisms are now a significant part of the biota (Cohen 2002). The best-documented invaders in these systems are fishes. Because many fish species are widely introduced, there is concern among scientists and managers over the homogenization of freshwater fish faunas worldwide (McKinney and ...

1. Introduction Early accounts of epenthesis in Optimality Theory focused on epenthesis that results from constraints on prosodic structure, that is, from syllable structure constraints or minimal prosodic category (e.g. minimal word) requirements. McCarthy & Prince (1993a) account for word-internal consonant epenthesis at V-V junctures in Axininca Campa, for example, by ranking ONSET (Syllable...

For given a graphH , a graphic sequence π = (d1, d2, · · · , dn) is said to be potentially H-graphic if there exists a realization of π containing H as a subgraph. Let Km −H be the graph obtained from Km by removing the edges set E(H) where H is a subgraph of Km. In this paper, we characterize the potentially K6 − C4-graphic sequences. This characterization implies a theorem due to Hu and Lai [7].

For given a graphH , a graphic sequence π = (d1, d2, · · · , dn) is said to be potentially H-graphic if there exists a realization of π containing H as a subgraph. Let Km − H be the graph obtained from Km by removing the edges set E(H) where H is a subgraph of Km. In this paper, we characterize potentially K2,5-graphic sequences. This characterization implies a special case of a theorem due to ...