Concept

Exponentielle intégrale

Publications associées (37)

5-aminooxazole as an internal traceless activator of C-terminal carboxylic acid: rapid access to diversely functionalized cyclodepsipeptides

A conceptually novel macrolactonization protocol has been developed. It is a domino process involving a sequence of: (1) protonation of 5-aminooxazole leading to the electrophilic iminium salt; (2) trapping of the iminium species by the neighboring C-termi ...

2006

Simulation of cement paste microstructure hydration, pore space characterization and permeability determination

Karen Scrivener

An Integrated Particle Kinetics Model (IPKM) to simulate the evolution of cement microstructure during hydration is presented. The advantages of the model are that the space is not divided into discrete pixels, so there is no lower resolution on the size o ...

2005

Cast shadow segmentation using invariant colour features

Touradj Ebrahimi, Elena Salvador

Shadows are integral parts of natural scenes and one of the elements contributing to naturalness of synthetic scenes. In many image analysis and interpretation applications, shadows interfere with fundamental tasks such as object extraction and description ...

2004

Preemptive open shop scheduling with multiprocessors: polynomial cases and applications

Dominique de Werra

This paper addresses a multiprocessor generalization of the preemptive open-shop scheduling problem. The set of processors is partitioned into two groups and the operations of the jobs may require either single processors in either group or simultaneously ...

2004

Cast Shadow Recognition in Color Images

Touradj Ebrahimi, Elena Salvador

Shadows are often integral parts of natural scenes and their identification is an important task in image analysis. In this paper, we propose an algorithm for recognition of shadows cast by objects on the scene's background. The proposed approach is based ...

EUSIPCO2002

Approximation for the exponential integral (Theis well function)

David Andrew Barry

In this note, we provide an analytical approximation to the exponential integral valid for all values of its argument. The approximation is constructed by interpolation between the exponential integral's small and large asymptotes.The interpolation contain ...

2000

Matrix vector product for confluent Cauchy-like matrices with applications to confluent rational interpolation

Mohammad Amin Shokrollahi

Many important problems in pure and applied mathematics and engineering can be reduced to linear algebra on dense structured matrices. The structure of these dense matrices is understood in the sense that their n2 entries can be "compressed" to a smaller n ...

2000

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