Phase Shift in the Whitham Zone for the Gurevich-Pitaevskii Special Solution of the Korteweg-de Vries Equation

We get the leading term of the Gurevich-Pitaevskii special solution to the KdV equation in the oscillation zone without using averaging methods.Comment: 13 pages, 3 figure

Domain Classification for Terminology Management: Principles of Compilation

Users consider domain labels one of the most important data categories in LSP collections, especially multi-domain ones. In the 1980s, the need for a domain classification specifically designed for the purposes of terminology management has been discussed actively, but such a classification seems to have never been created or at least made public. In the TermFactory project which is aimed at creating a platform and a workflow for collaborative ontology-based terminology work, it has been decided to create a dedicated domain classification that would be multilingual, generic (not too culture- and language-specific), based on widely acknowledged divisions, simple, user-friendly and extensible. In my paper, I discuss the reasons for using a domain classification in a term bank, consider some general problems in the compilation of domain classifications, and describe the principles of compilation of the TermFactory core domain classification.Peer reviewe

Semiotic Triangle Revisited for the Purposes of Ontology-based Terminology Management

In this paper, we examine the limitations of the traditional semiotic triangle from the point of view of ontology-based, multipurpose terminology management and suggest an alternative model based on the concept of terminological lexeme. The new model is being tested in the TermFactory project aimed at creating a platform and a workflow for distributed collaborative ontology-based terminology work.Peer reviewe

Site-Selective Pd-Catalyzed C(sp3)-H Arylation of Heteroaromatic Ketones

A ligand-controlled site-selective C(sp; 3; )-H arylation of heteroaromatic ketones has been developed using Pd catalysis. The reaction occurred selectively at the α- or β-position of the ketone side-chain. The switch from α- to β-arylation was realized by addition of a pyridone ligand. The α-arylation process showed broad scope and high site- and chemoselectivity, whereas the β-arylation was more limited. Mechanistic investigations suggested that α-arylation occurs through C-H activation/oxidative addition/reductive elimination whereas β-arylation involves desaturation and aryl insertion

Example of shock wave in unstaible medium: The focusing nonlinear Schrodinger equation

Dissipationless shock waves in modulational unstable one-dimensional medium are investigated on the simplest example of integrable focusing nonlinear Schr\''odinger (NS) equation. Our approach is based on the construction of special exact solution of the Whitham-NS system, which ''partially saturates'' the modulational instability.Comment: 4 pages, LaTEX, version 2.09, submitted to Phys. Lett.

Sähköiset työkalut auttavat parantamaan terminologisen tiedon saavutettavuutta

Peer reviewe