This paper describes the discrete Radon transform (DRT) and the exact inversion algorithm for it. Similar to the discrete Fourier transform (DFT), the DRT is defined for periodic vector-sequences and studied as a transform in its own right. Casting the forward transform as a matrix-vector multiplication, the key observation is that the matrix-although very large-has a block-circulant structure....

Résumé. Dans cet article, nous présentons la définition et l’étude d’un corpus de dialogues entre un schizophrène et un interlocuteur ayant pour objectif la conduite et le maintien de l’échange. Nous avons identifié des discontinuités significatives chez les schizophrènes paranoïdes. Une représentation issue de la S-DRT (sa partie pragmatique) permet de rendre compte des ces usages non standard...

This paper provides a uniform semantic framework for Topic-Comment Structures in Chinese. It is assumed that the topic element relates to an anaphor occuring in the comment. The comment which contains an unresolved anaphor is semantically underspecified. The semantic interpretation of topic-comment constructions results from the resolution of the anaphoric relation between topic and comment. In...

Some optimal design problems in topology optimization eventually lead to a degenerate convex minimization problem E(v) := ∫ Ω W (∇v)dx − ∫ Ω f v dx for v ∈ H1 0 (Ω) with possibly multiple minimizers u, but with a unique stress σ := DW (∇u). This paper proposes the discrete Raviart–Thomas mixed finite element method (dRT-MFEM) and establishes its equivalence with the Crouzeix–Raviart nonconformi...

In the following we deal with a special type of phrasal idiom, called gurative-compositional idiom. Idioms of this class have semantically autonomous components that shows a certain degree of independence. We propose an adequate manner of formal semantic representation of their idiomatic meaning: we map the referents of the semantically autonomous components into the formal representation. The ...

abstract In this paper, a new method named Dimension Reduction Technique (DRT) is presented for capacitance extraction of 3D multilayer and multiconductor interconnects. In this technique, a complex 3D problem is decomposed to a series of simpler 2D problems. Therefore, it results in dramatical savings in computing time and memory usage. Compared to FASTCAP, a eld solver based on BEM with multi...

In this paper we present a method for generating French texts conveying temporal information. This method integrates the Discourse Representation Theory (DRT) and the Systemic Grammar Theory. First, we show how the DRT is used to represent temporal information. We then show how this formalism is used to represent the temporal localization expressed by temporal adverbial phrases. Finally, we giv...

We attempted to estimate subjective scores of the Japanese Diagnostic Rhyme Test (DRT), a two-to-one forced selection speech intelligibility test, using automatic speech recognizers with language models that force one of the words in the wordpair. The acoustic models were adapted to the speaker, and then adapted to noise at a specified SNR. The match between subjective and recognition scores im...

This paper proposes the use of situation theory as a basic semantic formalism for defining general semantic theories. ASTL, a computational situation theoretic language, is described which goes some way to offering such a system. After a general description of Discourse Representation Theory an encoding of DRT in ASTL is given. Advantages and disadvantages of this method are then discussed. Top...

RESUMO Objetivo A cetamina apresenta-se como uma alternativa promissora contra a depressão resistente ao tratamento (DRT), no entanto o conhecimento de sua aplicação antidepressivo ainda é restrito. Diante disso, objetivou-se investigar eficácia em pacientes com DRT. Métodos busca da literatura foi efetuada na base dados MedLine. Os critérios inclusão foram: estudos clínicos controlados e rando...