1,720,958 research outputs found
GIS application for Environmental Impact Assessment: an analysis of the effects of a motor way project in a alpine valley.
No full textThis contribution introduces GIS applications and geomorphologic characterisation as important elements for making environmental impact assessment operational. A motorway project is analysed which is located in a typical alpine environment near the city of Trento, in northern Italy. The plan considers a series of feasible solutions to expand the connection between two major road networks that cross a series of ecosystems where geomorphologic factors play a fundamental key role. The impacts are evaluated and converted to a computational form, suitable for spatial data analysis, multi-criteria analysis and decision-making by alternative ranking. Both the strategy of approach and the results of the analysis are discussed at the end of the contribution
Cartografia tematica geologica, geomorfologica e vegetazionale nella valutazione di impatto ambientale. Analisi del progetto della circonvallazione di Mezzolombardo (TN) e del suo imbocco nella Val di Non
No full textL’utilizzo della cartografia tematica all’interno di un Sistema Informativo Territoriale (SIT) ha condotto, attraverso una serie di procedure originali, alla valutazione dell’impatto (VIA) prodotto su alcune componenti ambientali dall’eventuale realizzazione di un nuovo tracciato stradale a scorrimento veloce tra il comune di Mezzolombardo (TN) e l’imbocco della Val di Non nei pressi della località la Rocchetta. Per gli scopi di questa analisi, sono state realizzate, attraverso il rilevamento di terreno, carte di dettaglio a scala 1:5.000 di tipo geologico, geomorfologico e vegetazionale direttamente inserite all’interno di un SIT. La cartografia geologica tiene conto, oltre che della composizione del substrato mesozoico presente e dell’effettiva estensione degli affioramenti rocciosi, della distribuzione areale dei depositi quaternari presenti nell’area. Anche per quanto riguarda la cartografia geomorfologica sono state utilizzate unità di tipo poligonale simili a quelle geologiche, miranti a produrre una caratterizzazione del territorio di tipo continuo. Per la classificazione dei versanti ci si è avvalsi, inoltre, dell’utilizzo di carte delle pendenze derivate da modelli digitali del terreno. Utilizzando i dati geologici e geomorfologici raccolti, è stata inoltre creata una carta della pericolosità per frane di crollo utilizzando il metodo dei coni d’ombra, opportunamente adattato al caso di studio. La cartografia vegetazionale è stata realizzata con criteri fisionomico-strutturali, attraverso l’uso del metodo fitosociologico proposto dalla scuola di Zurigo-Montpellier.
L’indicizzazione delle carte è stata effettuata attraverso la costruzione di unità territoriali geologico-geomorfologiche di tipo sintetico, ottenute dall’incrocio delle unità geologiche con quelle geomorfologiche. E’ stata così realizzata una carta nella quale per ogni unità sono definiti i seguenti attributi: geologia, origine geomorfologica specifica e pendenza. Tali unità di base (sottounità) sono poi state accorpate in unità omogenee di tipo sintetico sulla base dei principali sistemi morfodinamici riconosciuti nell’area.
L’assegnazione di valori di qualità ambientale a tali unità è stata effettuata utilizzando il metodo di Rivas et al. (1995) opportunamente rivisto e normalizzato. La carta della vegetazione è stata direttamente indicizzata tenendo conto di un valore di qualità ambientale basato sulla capacità di trattenere efficacemente il suolo, sulla capacità di omeostasi e sulla stabilità strutturale delle diverse tipologie di vegetazione. Le due carte specifiche del valore ambientale geologico-geomorfologico e vegetazionale sono poi state incrociate per ottenere una carta finale del valore ambientale. La procedura di valutazione dell’impatto ambientale si é basata sulla creazione di un buffer dell’estensione di 60 m lungo due percorsi alternativi scelti tra i tracciati più probabili e di una sovrapposizione dell’area di buffer alle carte del valore ambientale e della pericolosità. In questo modo è stato possibile valutare in modo quantitativo la perdita diretta di territorio caratterizzato da un determinato valore ambientale e l’esposizione al pericolo di caduta massi di ciascuna delle due alternative, permettendo un paragone diretto tra i due tracciati. Le procedure descritte in questo studio, oltre a fornire uno schema concettuale ben definito per la VIA, forniscono informazioni quantitative utilizzabili poi in sistemi di analisi multicriteria e nei sistemi di supporto alle decisioni
Data and methodologies for a resource-efficient planning of primary and secondary aggregates in South East Europe (SEE) countries
No full textRecent, complete and reliable statistics on sources and quantities of primary and secondary aggregates, actual recycling rates, and the over- all aggregates requirements for the construction industry are core to resource-efficient planning. In the absence of such data, the objectives of the plan may be difficult or impossible to achieve, or plans created may be unrealistic or even counter-productive. It is therefore necessary to determine the degree to which these data are available, under whose jurisdiction their collec- tion, storage, and reporting falls, and whether they are currently used in planning. This is also the case in most South East Europe (SEE) coun- tries where, however, secondary aggregates are often not considered in planning for aggregates supply. The contribution of this paper is mostly focused on the definition of aggregates and the strategy to estimate the contribution of uncon- ventional aggregates, for which data gaps and uncertainties are clearly a bottleneck
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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