Lauri Simonsuuri 2006: Kansa tarinoi

Surprise for Lauri Karttunen ∗

This paper is written in honor of Lauri Karttunen’s seminal contributions to formal semantics, in particular his work on discourse referents (Karttunen, 1969), presuppositions (Karttunen, 1973, 1974) and questions (Karttunen, 1977). The present paper is connected to all these lines of work, suggesting that a long-standing issue concerning question embedding verbs like surprise, raised in Karttu...

THE REPLACE OPERATOR Lauri

This paper introduces to the calculus of regular expressions a replace operator and defines a set of replacement expressions that concisely encode several alternate variations of the operation. Replace expressions denote regular relations, defined in terms of other regular-expression operators. The basic case is unconditional obligatory replacement. We develop several versions of conditional re...

Lauri Jokinen Thesis Final Version

Fractional diffusion equations by the Kansa method

This study makes the first attempt to apply the Kansa method in the solution of the time fractional diffusion equations, in which the MultiQuadrics and thin plate spline serve as the radial basis function. In the discretization formulation, the finite difference scheme and the Kansa method are respectively used to discretize time fractional derivative and spatial derivative terms. The numerical...

In memoriam: Lauri Saxén (1927-2005).

Dr. Lauri "Tupu" Saxen died last October (2005) at the age of 78. He was a physician, a scientist, a photographer, a naturalist, a great story-teller and a man who enjoyed science enormously. His name has become synonymous with the Finnish school of Developmental Biology, a school that focuses on reciprocal inductive interactions during vertebrate organogenesis. But many biologists probably don...