An LMI approach to H∞ synchronization of second-order neutral master-slave systems

The H∞ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delay-dependent sufficient conditions for the design of a delayed output-feedback control are given by Lyapunov-Krasovskii method in terms of a linear matrix inequality (LMI). A controller, which guarantees H∞ synchronization of the master and slave structure using some free weighting matrices, is then developed. A numerical example has been given to show the effectiveness of the method

Treball Final de Master - Servidor de Comunicacions Unificades

L'objectiu d'aquest projecte és la creació d'una prova de concepte de comunicacions unificades utilitzant productes de programari lliure existents. Aquesta prova de concepte servirà per poder fer demostracions del funcionament general del programari implicat amb el mínim de preparacions, instal·lacions i configuracions prèvies possibles. El projecte es dividirà en dos appliances o LiveCD, creats a traves de Suse Studio, anomenats Comunicacions Unificades i Comunicacions Unificades 2.Els productes de programari lliure que composen el Servidor de Comunicacions Unificades els podem classificar en productes principals, plugins o addons dels productes i productes secundaris.Com a productes principals tenim els següents servidors que cobreixen les necessitats principals del Servidor de Comunicacions Unificades:Asterisk v1.8.3 : Servidor de telefonia amb veu sobre IP (VoIP).FreePBX v2.9.0beta2 : GUI de control i administració d'Asterisk.Openfire v3.7.0 : Servidor de IM basat en el protocol XMPP.BigBlueButton v0.71a : Sistema de conferència web. Pendent finalitzar-ne l'implementació.I els seguents productes principals que cobreixen les necessitats del servidor de Comunicacions Unificades 2:Zimbra v7.0.1 : Servidor de correu electrònic i de calendari. Pendent resoldre conflicte inicialització LDAP.Funambol v9.0.0 : Sincronització Zimbra amb mòbils.Com a plugins o addons del productes tenim, classificats segons el producte:Asterisk addons: chan_jingle i chan_gtalkZimlets: Asterisk, Google Translator, Funambol i SocialsOpenfire pugins: Asterisk, Facebook i GmailCom a productes secundaris tenim els clients necessaris per poder utilitzar l'appliance:Firefox: Navegador web que servirà com a interfície d'usuari per les diferents eines d'administració i la demostració.Pigdin o Spark: Clients de missatgeria instantània, per l'appliance Comunicacions Unificades.A més d'instal·lar aquests productes, s'implementa una interfície web, mitjançant Drupal, en format HTML per enllaçar les diferents eines d'administració dels productes, per a cadascun dels dos appliances i es realitzara un Kiosk appliance per a familiaritzar-se amb l'entorn SuseStudio.

Coliseum Duque's dancing [grand bal, 65 rue Rochechouart, Paris, 9e] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 57593

Membrane and walls: who is master, who is servant?

Specialised plant cell types often locally modify their cell walls as part of a developmental program, as do cells that are challenged by particular environmental conditions. Modifications can include deposition of secondary cellulose, callose, cutin, suberin or lignin. Although the biosyntheses of cell wall components are more and more understood, little is known about the mechanisms that control localised deposition of wall materials. During metaxylem vessel differentiation, site-specific cell wall deposition is locally prevented by the microtubule depolymerising protein MIDD1, which disassembles the cytoskeleton and precludes the cellulose synthase complex from depositing cellulose. As a result, metaxylem vessel secondary cell wall appears pitted. How MIDD1 is tethered at the plasma membrane and how other cell wall polymers are locally deposited remain elusive. Casparian strips in the root endodermis represent a further example of local cell wall deposition. The recent discovery of the Casparian Strip membrane domain Proteins (CASPs), which are located at the plasma membrane and are important for the site-specific deposition of lignin during Casparian strip development, establishes the root endodermis as an attractive model system to study the mechanisms of localised cell wall modifications. How secondary modifications are modulated and monitored during development or in response to environmental changes is another question that still misses a complete picture.

Duplication and concerted evolution in a master sex determiner under balancing selection.

The transformer (tra) gene is a key regulator in the signalling hierarchy controlling all aspects of somatic sexual differentiation in Drosophila and other insects. Here, we show that six of the seven sequenced ants have two copies of tra. Surprisingly, the two paralogues are always more similar within species than among species. Comparative sequence analyses indicate that this pattern is owing to the ongoing concerted evolution after an ancestral duplication rather than independent duplications in each of the six species. In particular, there was strong support for inter-locus recombination between the paralogues of the ant Atta cephalotes. In the five species where the location of paralogues is known, they are adjacent to each other in four cases and separated by only few genes in the fifth case. Because there have been extensive genomic rearrangements in these lineages, this suggests selection acting to conserve their synteny. In three species, we also find a signature of positive selection in one of the paralogues. In three bee species where information is available, the tra gene is also duplicated, the copies are adjacent and in at least one species there was recombination between paralogues. These results suggest that concerted evolution plays an adaptive role in the evolution of this gene family.

Illustrating Yoga: from the master to the book

In dieser Auseinandersetzung mit Visualität stellen die Autorinnen und Autoren des Bandes die faszinierende Welt des Bildes an der Schnittstelle zwischen Religion und Kultur vor. Zunächst werden hermeneutische Zugänge zu Visualität erkundet, dann folgen Studien zum Blick und dessen Regulierung innerhalb religiöser Traditionen, schliesslich werden die Vielfalt visueller Medien und deren spezifische Wechselwirkungen mit Religion untersucht. Das Buch gibt mit seiner breiten Palette internationaler und interdisziplinärer Beiträge Einblick in die visuelle Welt religiöser Traditionen und leistet einen Beitrag zu einer spezifisch religionswissenschaftlichen Visualitätsforschung.

Iowa Capital Complex Master Plan, April 19, 2000

This document provides design and stratagies for the capital complex. Also for future physical development of the complex.

Iowa Capital Complex Master Plan, January 7, 2010

This document provides design and strategies for the capital complex. Also for future physical development of the complex.

Oligomerization and DNA binding of Ler, a master regulator of pathogenicity of enterohemorrhagic and enteropathogenic Escherichia coli

Ler is a DNA-binding, oligomerizable protein that regulates pathogenicity islands in enterohemorrhagic and enteropathogenic Escherichia coli strains. Ler counteracts the transcriptional silencing effect of H-NS, another oligomerizable nucleoid-associated protein. We studied the oligomerization of Ler in the absence and presence of DNA by atomic force microscopy. Ler forms compact particles with a multimodal size distribution corresponding to multiples of 35 units of Ler. DNA wraps around Ler particles that contain more than 1516 Ler monomers. The resulting shortening of the DNA contour length is in agreement with previous measurements of the length of DNA protected by Ler in footprinting assays. We propose that the repetition unit corresponds to the number of monomers per turn of a tight helical Ler oligomer. While the repressor (H-NS) and anti-repressor (Ler) have similar DNA-binding domains, their oligomerization domains are unrelated. We suggest that the different oligomerization behavior of the two proteins explains the opposite results of their interaction with the same or proximal regions of DNA.

Singing and dancing the rhythm of life : oral poetry in the Abanyole community of Kenya

A statement presented at the oral defence of a Dr. Phil. dissertation on Saturday 26th October 2002, University of Helsinki

The influence of work context on demand for master's studies: a comparative analysisi between Brasil and Spain

The communication presents the results of an investigation of exploratory and comparative character which objective is to analyze the influence of the actual labour situation into the demand of official master studies in the field of education. The study has been developed in two countries with a very different labour situation: Brasil, country of economic expansion and Spain, in recession due to the actual economic crisis. In that sense, the study provides data for deep thinking about the influence of the constriction or expansion of employment on the behaviour and demand of the students who access master studies and on how the previous formative and labour trajectory affects their expectations, demands and future projects. The working methodology is qualitative and the strategy for data collection the “focus group”. As a first approach, two groups of discussion have been formed with master students. A first one with students from Universidad de Barcelona- España and another one with members of Universidade do Vale do Itajaí- Brasil. Then, we constituted a mixed group of discussion in order to analyze differences and similarities.

The influence of work context on demand for master's studies: a comparative analysisi between Brasil and Spain

The communication presents the results of an investigation of exploratory and comparative character which objective is to analyze the influence of the actual labour situation into the demand of official master studies in the field of education. The study has been developed in two countries with a very different labour situation: Brasil, country of economic expansion and Spain, in recession due to the actual economic crisis. In that sense, the study provides data for deep thinking about the influence of the constriction or expansion of employment on the behaviour and demand of the students who access master studies and on how the previous formative and labour trajectory affects their expectations, demands and future projects. The working methodology is qualitative and the strategy for data collection the “focus group”. As a first approach, two groups of discussion have been formed with master students. A first one with students from Universidad de Barcelona- España and another one with members of Universidade do Vale do Itajaí- Brasil. Then, we constituted a mixed group of discussion in order to analyze differences and similarities.