In this paper, we propose a generic mechanism for extending decision procedures by means of a lemma speculation mechanism. This problem is important in order to widen the scope of decision procedures incorporated in state-of-the-art veri cation systems. Soundness and termination of the extension schema are formally stated and proved. As a case study, we consider extensions of a decision procedu...

l. S-alkyl glycerol ethers were isolated by thin-layer chromatography from the total lipids of Ehrlich ascites cells following reduction with vitride. 2. Gas-liquid chromatography of the isopropylidene derivatives showed the principal component to be 16:O (83*,i) with lesser amounts of 1X:1 (14%) and 18:O (2”:;). 3. Quanti~dtive analysis yielded values of about 2~moles~~~mg lipid for the isolat...

This paper proposes a fuzzy logic approach, UFM (uni ed feature matching), for region-based image retrieval. In our retrieval system, an image is represented by a set of segmented regions each of which is characterized by a fuzzy feature (fuzzy set) re ecting color, texture, and shape properties. As a result, an image is associated with a family of fuzzy features corresponding to regions. Fuzzy...

The accurate monitoring of the structural changes in the brain plays a central role in the treatment of Alzheimer's disease (AD), for instance for diagnostic purposes and for the assessment of the drugs e cacy in clinical trials. We propose here a framework based on the ux analysis of vector elds [13] for the automatic quanti cation of the longitudinal regional atrophy in the brain. In particul...

Ladusaw (1979), Carlson (1980), and Linebarger (1987) have all argued that negative-polarity any is an existential quanti er that surfaces in certain environments, notably in the scope of negation. Similarly, Kadmon & Landman (1993) interpret it as an inde nite with existential force. On these analyses (1b) is the correct LF. I will refer to these diverse accounts collectively as the 9-account....

We describe symbol elimination and consequence nding in the rst-order theorem prover Vampire for automatic generation of quanti ed invariants, possibly with quanti er alternations, of loops with arrays. Unlike the previous implementation of symbol elimination in Vampire, our work is not limited to a speci c programming language but provides a generic framework by relying on a simple guarded com...

Even in the early times of chromatography with conventional detectors (i.e. UV/VIS, FID) it became evident that different sample matrices present peculiar interfering compounds, and the importance of using appropriate spiked matrix calibrators in order to get reliable quanti‐ tative results was recognized. In these conditions, however, the main concern was the presence of coeluting compounds gi...