Le paradigme central en théorie de la commande robuste repose sur la structure de commande à contre-réaction et sur les modèles linéaires à temps invariant (LTI) des systèmes dynamiques (cf. figure 1). La première utilise l’information des sorties mesurées y pour élaborer un signal de commande u. Les modèles LTI quant à eux sont des objets mathématiques bien caractérisés et simples à utiliser. ...

Interleukin (IL)-1 signaling plays a critical role in intestinal immunology. Here, we report that the major population of intestinal lamina propria lymphocytes expressing IL-1 receptor 1 (IL-1R1) is the lymphoid tissue inducer (LTi)-like cell, a type of innate lymphoid cell. These cells are significant producers of IL-22, and this IL-22 production depends on IL-1R1 signaling. LTi-like cells are...

In spite of the undisputedly high degree of non-stationarity of speech signals, the present day determination of its acoustic features is based on the assumption that speech production can be described as a linear time invariant (LTI) system on the time scale of about 20 ms [1]. In automatic speech recognition, the wide sense stationarity of an LTI–system is used as prerequisite for the consist...

Kalman-Yakubovich-Popov (KYP) Lemma (also frequently called “positive real lemma”) is a major result of the modern linear system theory. It is a collection of statements related to existence and properties of quadratic storage functions for LTI state space models and quadratic supply rates. The KYP Lemma is used in the derivation of H2 and H-Infinity optimal controllers, Hankel optimal reduced ...

The Language Translation Interface (LTI) is a prototype developed for the Australian Defence Organisation. The aim is provide a single, simple, interface to a variety of MT tools and utilities for personnel who need to produce translations when they have no easy access to human translators. Now that the LTI has been demonstrated and trialled at several military exercises, we are gathering user ...

Abstract. This special issue marks the 100th anniversary of founding Liverpool Tidal Institute (LTI), one a number important scientific developments in 1919. The preface gives brief history how LTI came about and roles its first two directors, Joseph Proudman Arthur Doodson. It also short overview research on tides at through years. Summaries are given 26 papers issue. will be seen that topics ...

Under increasing pressure to contain costs, hospitals are challenged to provide high-quality care to an increasingly complex group of children with life-threatening illness (LTI) that often worsen over time. Pediatric palliative care is an essential component of optimal hospital care delivery for these children and their families. This article describes (1) the current landscape of pediatric ho...

This paper deals with the problem of switching between several linear time-invariant (LTI) controllers—all of them capable of stabilizing a specific LTI process—in such a way that the stability of the closed-loop system is guaranteed for any switching sequence. We show that it is possible to find realizations for any given family of controller transfer matrices so that the closed-loop system re...

This paper deals with the stability of the large-scale interconnected systems with a constrained control structure. It is assumed that the information flow matrix for an interconnected control system is given, which represents which outputs of the system are available for constructing any input signal of the system. The notion of decentralized overlapping fixed mode (DOFM) is introduced, and it...