169,765 research outputs found
L'approccio orientato alla resilienza nella cura delle polidipendenze: analisi di un caso clinico
No full textLa morfologia del versante in funzione dei processi morfogenetici in aree calanchive: l’esempio della Sicilia settentrionale
No full textLa morfologia del versante in funzione dei processi morfogenetici in aree calanchive: l’esempio della Sicilia settentrionale
No full textFROM SLOPE MORPHOMETRY TO MORPHOGENETIC PROCESSES: AN INTEGRATED APPROACH OF FIELD SURVEY, GIS MORPHOMETRIC ANALYSIS AND STATISTICS IN ITALIAN BADLANDS
No full textCalanchi (singular calanco) represent a typical example of badlands in the Italian peninsula, which rapidly evolve on clayey terrains such as the widespread Pliocene-Pleistocene marine clays. The present study aimed at investigating the role of the slope morphometry on the typology and distribution of morphogenetic processes in a calanchi area located in southern Italy. The research included detailed geomorphological surveying, morphometric and statistical analysis. The study area was first subdivided into individual hydrographic units (HUs), for which field survey allowed to identify the dominant denudation processes, their intensity and the distribution of the associated landforms (pipes, rills, gullies, landslides). The morphometry of each HU was characterized by calculating the Morphometric Slope Index (MSI) on a reconstructed digital elevation model (DEM). By statistically comparing the morphogenetic and morphometric data, the influence of the slope morphometry on the type, distribution and evolution of the calanchi erosion process has been highlighted. In particular, through a Cluster Analysis the groups of HUs having similar dominant processes were identified and, by applying the Analysis of the Variance, the effect of the MSI on the identified clusters was analysed. Two clusters were identified which revealed the relative importance of morphogenetic processes and the strict connection between surface and subsurface landforms. These two clusters were discriminated by the MSI value (high MSI favoured mass movements, whilst low MSI favoured gully erosion and piping), highlighting the importance of slope morphometry in driving the morphogenetic hillslope processes
Dom Deschamps, Diderot et Spinoza. Deux versions parallèles du matérialisme biologique au XVIIIe siècle (in Appendice: Synopsis des deux versions de la "Réfutation de Spinoza", par Dom Deschamps)
No full textL'article traite de la double question du rapport du moine benedictin Dom Léger-Marie Deschamps (1716-1774)avec Spinoza et avec le matérialisme du XVIIIe siècle. Dome Deschamps était l'auteur d'un ouvrage étonnant, clandestin et posthume, qui a comme titre "La Vérité ou le Vrai Système", jamais publié et qui attira l'attention de Diderot, de Rousseau, d'Holbach et de toute la cotérie philosophique du XVIIIe siècle. Démeuré inconnu jusqu'au XIXe siècle, Dome Deschamps, s'était engagé dans la construction d'un système de métaphisique "rieniste" et matérialiste qui s'avère etre éversif à l'égard de la métaphysique traditionnelle et semble se rappocher beaucoup de la métaphysique de Spinoza. En réalité, une lecture attentive des textes montre que la pensée de Dom Deschamps s'éloigne de Spinoza, il formule une critique du "spinozisme" de son époque et se rappoche bizzarrement de ce matérialisme vitaliste et de la conception du tout organique que formule, dans ces memes années, Denis Diderot. Le directeur de l'Encyclopédie rencontrera Dom Deschamps en 1769, avant la rédaction du "Reve de d'Alembert", et reçois maintes suggestions du "Vrai Système" de ce "gros moine bénédictin". L'issue pratique et politique de ce système est une forme de communisme éthique qui fait place nette des valeurs dominantes dans la société d'ancien régime. C'est la raison par laquelle Rousseau conseilla à Dom Deschamps de se taire et de ne pas publier son ouvrage, au risque de "finir sur le boucher". Ce conseil de Rousseau fut suivi et le "Vrai Système" connut une histoire éditoriale longue et difficile, dont notre article retrace les étapes principales
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Relationships between a new slope morphometric index and calanchi erosion in northern Sicily, Italy
No full textThe Italian badlands, or “calanchi”, are common landforms in Mediterranean areas including central and
southern Italy. Calanchi landforms may be compared to small hydrographic basins. These landforms are
characterised by dense, hierarchical and rapidly evolving drainage systems carved into steep clayey slopes
and by a sharply alternating pattern of furrows and narrow, generally sharp crests.
This work presents a study of morphometric characteristics and a statistical analysis for two sites in northern
Sicily (Italy), on outcrops of silty-clay deposits affected by active erosion processes, which give this area a typical
calanchi landscape. In particular, factors closely linked to the characteristics of the hydrographic network and
slope morphometry were considered and analysed. The initial geometry of the slopes was reconstructed and
statistically compared with that of the current calanchi slopes including the drainage network.
A new morphometric index (Morphometric Slope Index, MSI) was defined to represent the initial slope geometry
as awhole. This indexwas found to be effective in defining the structure of hydrographic networks, summarising
the characteristics and type of slope evolution, and quantifying the rate of soil erosion. The rate was
determined based on both linear (gully erosion) and areal (landslides, sheet and rill erosion) morphogenetic
processes, and our analysis based on MSI indicates the dominance of areal erosion. MSI could also be used for
basins larger than calanchi to represent the characteristics of geomorphic processes
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