1,721,504 research outputs found
Perché !!! : valse chantée : [piano] / par le comte G. Castelli
No full textTitre uniforme : Castelli, G. (18..-18.. ; compositeur). Compositeur. [Perché !!!. Piano]Valses (piano) -- +* 1800......- 1899......+:19e siècle:Piano, Musique de -- +* 1800......- 1899......+:19e siècle:Romances (musique vocale) -- +* 1800......- 1899......+:19e siècle
A self-organized multiagent approach for distributed management of contextual data
No full textPervasive computing devices are able to generate enormous amounts of data, from which knowledge about situations and facts occurring in the world should be inferred for the use of pervasive services. However accessing and managing effectively such a huge amount of distributed information is challenging for services. In this paper we propose a self-organized approach to autonomously organize distributed contextual data items into sorts of knowledge networks. Knowledge networks are conceived as an alive self-organized layer in charge of managing data, that can facilitate services in extracting useful information out of a large amount of distributed items. We motivate our approach and present the W4 Data Model that we used to represent contextual data. On these basis, we introduce the general idea of W4 Knowledge Networks and we detail the specific bio-inspired approach for self-organized networking of data items. A case study is introduced to clarify the concepts expressed, and experimental results are reported to support our arguments and proposal
Contextual data management and retrieval: A self-organized approach
No full textPervasive computing devices are able to generate enormous amounts of distributed data, from which knowledge about situations and facts occurring in the world should be inferred for the use of pervasive services. However accessing and managing effectively such a huge amount of distributed information is challenging for services. In this paper after having outlined these challenges, we propose a self-organized agent-based approach to autonomously organize distributed contextual data items into sorts of knowledge networks. Knowledge networks are conceived as an alive self-organized layer in charge of managing data, that can facilitate services in extracting useful information out of a large amount of distributed items. In particular, we present the W4 Data Model we used to represent data and the self-organized approach to build Knowledge Networks. Some experimental results are reported to support our arguments and proposal, and related research work are extensively discussed. © 2010 Springer-Verlag Berlin Heidelberg
Contributo alla conoscenza dei crostacei branchiopodi della RNO "Saline di Trapani e Paceco": stato delle conoscenze
No full textThe W4 model and infrastructure for contextaware browsing the world
No full textThe imminent mass deployment of pervasive computing technologies such as sensor networks and RFID tags, together with the increasing participation of the Web community in feeding geo-located information within tools such as Google Earth, will soon make available an incredible amount of information about the physical and social worlds and their processes. This opens up the possibility of exploiting all such information for the provisioning of pervasive context-aware services for "browsing the world", i.e., for facilitating users in gathering information about the world, interacting with it, and understanding it. However, for this to occur, proper models and infrastructures must be developed. In this paper we propose a simple model for the representation of contextual information, the design and implementation of a general infrastructure for browsing the world, as well as some exemplar services we have implemented over it
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Current-Controlled Policies for Battery-Driven Dynamic Power Management
No full textThe availability of multi-battery power supplies adds new degrees of freedom to the problem of increasing the lifetime of a battery system. Proper battery management policies, that decide which battery must be connected to the load, at any point in time, can exploit the additional flexibility offered by the power supply to maximally extend battery lifetime. In this paper, we introduce a novel class of battery management policies based on the fact that the amount of charge a battery can deliver depends on the discharge current drawn from the battery itself. These policies are named current-controlled because the choice of the battery pack to be used at any point in time is driven by the instantaneous current load required by the system. We have explored the applicability of current-controlled policies in the realistic case of a personal digital organizer with various operational modes. Results have shown that battery lifetime extensions over the case of traditional battery discharge are in the range 14-19% for a typical usage profil
Scaling properties of long-range correlated noisy signals: application to financial markets
Full text linkLong-range correlation properties of financial stochastic time series y(i) have been, investigated with the main aim to demonstrate the ability of a recently proposed method to extract the scaling parameters of a stochastic series. According to this technique, the Hurst coefficient H is calculated by means of the following function: DMA = root1/N(max)-n(max) Sigma(i=nmax)(Nmax) [y(i) - (y) over tilde (n)(i)](2) where (y) over tilde (n)(i) is the moving average of y(i), defined as 1/n Sigma(k=0)(n-1)y(i-k), n the moving average window and N(max) is the dimension of the stochastic series. The method is called Detrending Moving Average Analysis (DMA) on account of the several analogies with the well-known Detrended Fluctuation Analysis (DFA). The DMA technique has been widely tested on stochastic series with assigned H generated by suitable algorithms. It has been demonstrated that the ability of the proposed technique relies on very general grounds: the function C(n)(i) = y(i) - (y) over tilde (n)(i) generates indeed a sequence of cluster's with power-law distribution of amplitudes and lifetimes. In particular the exponent of the distribution of cluster lifetime varies as the fractal dimension 2 - H of the series, as expected on the basis of the box-counting method. In the present paper we will report on the scaling coefficients of real data series (the BOBL and DAX German future) calculated by the DMA techniqu
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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