6,274 research outputs found
Encuentros con Elena Poniatowska
No full textThe author analyzes testimonial literature from the perspective of female literature through his meeting with Elena Poniatowska. An analysis of reality vs. Fiction in Elena, Jesusa and Tinisima.El autor analiza, desde su encuentro con Elena Poniatowska, la vertiente de la literatura testimonial como literatura de mujeres. Un análisis interior de la relación entre realidad y ficción, entre Elena, Jesusa o Tinísima
Cinque giorni di Lucia Giustini
No full textRecensione al romanzo young adult Cinque giorni (Pelledoca, 2023) dell'autrice italiana Lucia Giustini. Il romanzo presenta una medesima vicenda narrata da due punti di vista differenti, due coscienze adolescenti che filtrano la narrazione attraverso la loro prospettiva peculiare e il loro livello di maturità. Attraverso un gioco di rimandi tra intreccio e fabula, il romanzo di Giustini si pone come interessante territorio di sperimentazione contenutistica e formale
An efficient routing strategy for performance improvement in WMNs
No full textWireless Mesh Networks (WMNs) propose themselves as a network architecture suitable for a wide range of applications, very versatile, rather cheap and easy to deploy. The capability of clients to forward information among each other, thus implementing a Hybrid WMN, allows to extend the network coverage and makes them suitable for the information delivery in Intelligent Transportation Systems and in Public Safety applications. The increase of the network size, i.e. of the number of nodes and of available access points for the clients, and its division into routing domains with different characteristics, raises the problem of different paths for upstream and downstream flows in the same conversation. Such routing asymmetry often leads to a waste of the radio resources shared among clients and, consequently, to reduction of network performances. In this paper we propose a strategy for an efficient interconnection of the client network with the backbone, in order to minimize the asymmetry of paths. The presented solution does not depend on a specific routing protocol and involves only the boundary devices, thus requiring a low effort for its implementation. A peculiar feature of our work is experimental validation through a testbed consisting of real world devices; the obtained results show an improvement in network performances for the involved nodes, evaluated in terms of network delay and network throughput
Functional architecture of the major light-harvesting complex from higher plants
No full textLight-harvesting complexes (Lhc) catalyse sunlight harvesting for photosynthesis as well as other essential functions, including photoprotection by quenching of harmful chlorophyll triplet states and prevention of photoinhibition by dissipation of excitation energy in excess. In addition, folding of Lhc proteins depends on the availability of both xanthophylls and carotenoids, thus preventing the potential formation of harmful chlorophyll-protein complexes lacking photoprotectors. We have used the mutation analysis in order to study the association of the different functions to three protein domains, each composed of a xanthophyll molecule and of neighbour chlorophylls a and b, within the major antenna complex of photosystem II, i.e. LHCII. We have found that the xanthophyll to chlorophyll energy transfer is a shared property of the whole pigment-protein complex, and occurs with similar efficiency in each of the three structural domains. Photoprotection by quenching of chlorophyll triplets is catalysed mainly by lutein bound to site L1, and occurs via energy transfer from chlorophylls A1 and B1. This domain is essential for pigment-induced protein folding.The domains L2 and N1 weakly influence either the protein stability or the photoprotection; however, replacement of xanthophyll species bound to these structural domains modulates the fluorescence quantum yield of LHCII, and suggests that non-radiative dissipation of excess energy can be regulated through allosteric modification of the protein structure by exchanging xanthophylls in these sites. Copyright 2001 Academic Press
Toward a Standard-Compliant Implementation for Consensus Algorithms in Vehicular Networks
No full textCooperative Intelligent Transport System (C-ITS) applications require a continuous exchange of information between road users and roadside infrastructures. In this regard, distributed consensus algorithms can play an essential role in the definition of the information exchange rules between an ITS station and its neighbors. Although the consensus approach for networked systems is well-established, the efficiency of consensus methods under real-world vehicular communication constraints is largely unknown. This paper provides an ITS standard-compliant framework for analysis of consensus algorithms in vehicular networks with an emphasis on the role of robustness to changes in network topology in highly dynamic and dense environments. Our simulations reveal that in regular traffic conditions, the implemented consensus algorithm is able to achieve good performances in terms of both convergence time and needed consensus iterations. However, numerical results demonstrate that under dense and high-mobility traffic conditions the frequent exchange of large amounts of range information increases the Channel Busy Ratio (CBR) of the vehicular network and reduces the effectiveness of the algorithm as well
Bio-bibliografía de y sobre Elena Poniatowska Amor
No full textThe objective of this article is to collect and present: I. the chronology of the life and work of Elena Poniatowska; II. the complete works (as principal and secondary author), and III. the bibliography on the author (books, chapters, and articles).El objetivo de este artículo es reunir y presentar: I. los datos cronológicos fundamentales de la vida y la obra de Elena Poniatowska; II. El compendio de sus obras (como autora principal y como secundaria); y III. la bibliografía sobre la escritora (libros, capítulos de libros y artículos)
El Tlacuache Núm. 698 (2015). 698 Año 13 (2015) noviembre. El Tlacuache
No full textLa mujer vista por cronistas en tiempos novohispanos por Laura Elena Hinojosa. - El Códice Mauricio de la Arena forma parte de Los códices de Tlaquiltenango por Laura Elena Hinojosa
Federalismo fiscale: sistemi di finanziamento e di controllo della spesa in cinque realtà regionali
No full textIl capitolo presenta un'analisi degli strumenti di governo dei sistemi sanitari regionali in cinque realtà, ne analizza l'evoluzione al fine di individuare le tendenze in att
I sistemi di finanziamento e di controllo della spesa in cinque regioni: un aggiornamento al 2003
No full textIl capitolo analizza i sistemi regionali di finanziamento delle aziende sanitarie, i sistemi di programmazione e controllo della spesa e le modalità applicative della L. 405/2001 e del DPCM sui LEA in cinque regioni italian
Discovering and learning in nursery school through sensoriality
No full textreservedL’elaborato affronta la tematica della sensorialità nei contesti educativi 0-3. Inizialmente viene svolto uno studio sulla percezione e sullo sviluppo percettivo del bambino. Successivamente vengono esposti i cinque sensi come strumento di scoperta durante le attività che si svolgono al nido e vengono indicate alcune proposte educative. Infine viene illustrata l’esperienza svolta durante il tirocinio formativo descrivendo l’osservazione dei bambini nell’uso dei cinque sensi nella quotidianità
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