1,720,960 research outputs found
CARE-W: sistema di supporto decisionale per la gestione e manutenzione integrata delle reti acquedottistiche
No full textIn questo lavoro viene descritto il progetto di ricerca europeo denominato CARE-W, nell’ambito del quale è stato sviluppato un sistema di supporto decisionale per la gestione e manutenzione delle reti acquedottistiche. Il pacchetto sviluppato consente, per la rete esaminata, la valutazione dei livelli di performance, il calcolo dell’affidabilità, la previsione delle fallanze, la predisposizione di piani di riabilitazione a breve e lungo termine. Nella nota vengono inoltre descritti i risultati ottenuti durante la fase di sperimentazione del sistema e dei vari strumenti di analisi che lo compongono; in particolare esaminando alcune reti di distribuzione idrica italiane, sono stati calcolati i tassi di rottura e gli indici di criticità idraulica, sia per l’intera rete sia per ogni singola condotta, così da poter individuare le migliori strategie di intervento
Progetto pilota di applicazione del prototipo CARE-W per la gestione delle reti di distribuzione idrica
No full textIl sistema di supporto decisionale CARE-W, nato da un progetto di ricerca europeo consente la gestione informatizzata delle reti di distribuzione idrica urbane. I temi che ne stanno alla base sono il calcolo dell’affidabilità, i livelli di performance, la previsio-ne delle rotture e l’analisi dei costi e delle tecniche di riabilitazione. Questa memoria oltre a presentare le possibili prestazioni di CARE-W, ne descrive, nella seconda parte, una applicazione. Il caso studio considerato è la rete di distribuzione idrica di Villadose (RO) gestita dalla società Polesine Acque s.p.a e i risultati ottenuti, con lo scopo di diagnosticarne lo stato di salute e fornire una programmazione agli interventi futuri. La scelta della rete idrica è ricaduta in quella di Villadose in quanto le caratteristiche e le problematiche presentate dalla rete possono essere considerate rappresentative per molte altre realtà Italiane
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Sistemi di supporto decisionale per la gestione e manutenzione integrata delle reti idriche e fognarie: CARE-W e CARE-S
No full textPlanning maintenance strategies for Italian urban drainage systems applying CARE-S
No full textFor wastewater management utilities, asset management can be defined as managing infrastructure capital assets to minimize the total cost of owning and operating them, while delivering the service levels customers desire.
CARE-S was carried out as a joint European initiative supported by the European Commission, with a budget of 5 million Euro.
CARE-S is a decision support system including models and tools for the design and the exploration of rehabilitation strategies and programs for wastewater network. It provides twenty fundamental instruments for estimating the current and future condition of networks, i.e. performance indicators (PI), selecting and ranking of rehabilitation projects and long-term investment needs. The procedure for selection and ranking of projects is supported by tools for analysis of structural failures and hydraulic performance. Socio-economic issues are also included in the priority ranking process. The CARE-S user can choose between three possible approaches for developing a framework of strategic, proactive rehabilitation of the system, one for evaluating the current system performances, another for defining rehabilitation plans to solve system deficiencies and, the third, for developing the calculation of long-term strategies of rehabilitation.
The performance analysis approach consists of the definition and the evaluation of a set of performance indicators (concerning pipe failures, operational failures, environmental impacts, customer complaints, etc.) that are calculated on network level, zone level, or even on pipe level.
The second approach offered by CARE-S to the users is the definition of a multicriteria procedure for the evaluation and selection of pipelines that should be candidates for rehabilitation.
The total costs of all viable rehabilitation projects usually exceed the available budget. So the projects must be ranked by efficiency criteria in order to spend the money on those projects promising the most positive effects. The third approach that can be applied using CARE-S provides the development and the calculation of long-term strategies of rehabilitation. It is an approach that refers to the condition class of pipes and to the efficiency of rehabilitation programs. The long-term strategy module of CARE-S is designed for the forecast of future rehabilitation needs, and the benefits that can be expected from selected strategies by calculating the pros and cons in terms of indicators with or without rehabilitation.
The paper describes the application of CARE-S to the urban drainage system of the historical center of Reggio Emilia town, managed by ENIA municipality.
Reggio Emilia (150000 inhabitants and a catchment of 231 km2) is located at 50 km North – West from Bologna in Emilia Romagna (Northern Italy(.
ENIA can be graded as a well organized municipality compared to the average Italian standard: a sufficient number of data is available in digitalized format and GIS interface of the system is ready-made. Nevertheless, the data availability is not homogeneous for all the sewer systems managed and frequently, even if data are collected, the quality is not that requested by CARE-S tools. The municipality of ENIA does not have a scheme prioritizing important areas for rehabilitation, therefore the first scope of the application has been to plan CCTV inspections, on the bases of the results of CARE-S selected tools and on network characteristics and criticality. Planning rehabilitation actions to be applied in the next years and developing the calculation of long-term strategies of rehabilitation has been the second goal of the application. The decision making has been based on information gained through the CCTV inspection we planned and the municipality performed and on results of CARE-S structural tools.
In summary, the paper presents, for the first time a comprehensive application of CARE-S to an Italian case study as a project on rehabilitation optimization
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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