1,721,123 research outputs found
I servizi del Portale Cartografico Nazionale negli strumenti di supporto alle decisioni per la gestione della risorsa idrica: applicazioni e possibili sviluppi
No full texthttp://www.pcn.minambiente.it/GN/archivio_2009.php?lan=i
Climate change and decision support systems for water resources management in large reservoir
No full textThe issue of the management of water resources requires more and more approaches in which multiple skills and capacities are nested together (Integrated water resources management process), especially when critical situations are taken into account, such as climate change scenarios. The various disciplines involved can be climatology, meteorology, hydrology, ecology, environmental science, agricultural science, water resources engineering, socioeconomics, law and public policy. I n this context, Decision Support Systems (DSS), applied to the management of water resources, play an essential role since they must allow the different stakeholders and competencies involved to summarize results and produce decisions on a common and shared basis. The RIVER software is a DSS for water resource allocation and management which portraits the hydraulic situation in the catchment area with a simple intuitive "node-arc" sketch, at the same time uses simulation algorithms to allow the user to take into consideration many different scenarios of water use according to the principle of "priority-balanced" criteria shared by all stakeholders involved. The case study for the reservoir Montedoglio in the Tiber River Basin, highlights how these principles can be applied for a proactive management of critical scenarios in periods of drought due to climate change hypothesis. In particular, time series of hydrological flow, modulated with drought and climate trends, have been simulated and, as output of the system, indications for preventive interventions to be planned for a correct use of water for irrigation, civil and environmental use have been obtained
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
Agricultural water management in a multipurpose scenario
No full textThe issue of water resources management requires more approaches in which multiple skills and capacities are nested together (integrated water resources management process), especially when critical situations are taken into account, such as: lake areas and possible climate change scenarios. The various disciplines involved are: climatology, meteorology, hydrology, ecology, environmental science, agricultural science, water resources engineering, socioeconomics, law and public policy. In this context, Decision Support Systems (DSS), applied to the management of water resources, play an essential role since they must allow the different stakeholders and know-hows involved to summarize results and produce decisions on a common and shared basis. The irrigation water use is most common and demanding with respect to other uses and it often enters in competition with other kind of uses for the exploitation of surface water. For this reason a DSS has been studied to support the management of water withdrawals, with particular attention to irrigation use. The Hydrogate Project is a spatial decision support system (SDSS) developed by the University of Perugia and the T4E S.r.l., which is characterized by the integration of hydrological modeling scripts with the capabilities of a GIS system all made available via WEB. So, this WEB-based system, under the control of an administrator, can provide on the one hand the possibility to have a common database of water use and on the other, the possibility to share, with all the stakeholders, this data, results, analysis tools and GIS integration to better assess the available water during the decision-making process
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
A WEB-GIS platform for water resource management. The information and communication technologies for environmental sustainability.
No full textWater is strategic but also highly vulnerable natural resource, this because the increasing demand from multiple uses, in many cases competing amongst them, seems to influence the concepts of sustainability of the exploitation. In this context, many are the mathematical models known in bibliography and the approach of the proposed model is focused towards a natural integration of the two processes of evaluation and management of the available water resource, in an operating context that is shared amongst managers, users and the local administration concerned. From the operational point of view, the WRME project (Water Resources Management and Evaluation) is an integrated Decision Support System (DSS) that is not only a platform to exchange information and assessments, but is a tool for conflict resolution, in the management of water resources, and consensus reaching among all participants in the decisional processes. So the “top-down” approach has been replaced with a “bottom-up” approach where all stakeholders become decision makers themselves. Innovations do not only concern the philosophical aspects of management, but also technological aspects. In fact, for the development of this integrated tool a considerable effort in adapting existing technologies and developing new capabilities has been required, especially in the integration of modeling engines in a single GIS platform available on the WEB
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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