1,721,010 research outputs found
Telerilevamento iperspettrale da piattaforma aerea: individuazione di coperture in cemento-amianto di edifici urbani e rurali
No full textImpatto della Diga delle Tre Gole nella Contea di Zhong Xiang: Analisi mediante telerilevamento e GIS
No full textrivista con referaggi
Aspetti metodologici ed operativi nella caratterizzazione di coperture in cemento amianto: l’esempio del comune di Broni (PV)
No full textEnvironmental applications of airborne hyperspectral remote sensing: asbestos concrete sheeting identification and mapping
No full textFourteenth International Conference and Workshops on Applied Geologic Remote Sensing, August, Las Vegas, Nevad
Hyperspectral Remote Sensing in environmental monitoring: Detailed mapping of asbestos concrete sheeting and in illegal stocking area
No full textSEG/Calgary 2000, Society of Exploration Geophysicists International Exposition, Seventieth Annual Meeting
Calgary, U.S.A
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
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
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
Assessing steady-state fluorescence and PRI from hyperspectral proximal sensing as early indicators of plant stress: the case of ozone exposure
No full textHigh spectral resolution spectrometers were used to detect optical signals of
ongoing plant stress in potted white clover canopies subjected to ozone fumigation. The
case of ozone stress is used in this manuscript as a paradigm of oxidative stress. Steadystate
fluorescence (Fs) and the Photochemical Reflectance Index (PRI) were investigated
as advanced hyperspectral remote sensing techniques able to sense variations in the excess
energy dissipation pathways occurring when photosynthesis declines in plants exposed to a
stress agent. Fs and PRI were monitored in control and ozone fumigated canopies during a
21-day experiment together with the traditional Normalized Difference Vegetation Index
(NDVI) and physiological measurements commonly employed by physiologists to describe
stress development (i.e. net CO2 assimilation, active fluorimetry, chlorophyll concentration
and visible injuries). It is shown that remote detection of an ongoing stress through Fs and
PRI can be achieved in an early phase, characterized by the decline of photosynthesis. On
the contrary, NDVI was able to detect the stress only when damage occurred. These results
open up new possibilities for assessment of plant stress by means of hyperspectral remote
sensing
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