1,720,969 research outputs found
''Preliminary data of the effects of selected deep-rooted vegetation on the soil state: results from an in-situ test''
No full textThe use of novel naturalistic interventions making use of vegetation have been already proven to be successful in the reduction of erosion along sloping grounds, or in increasing the stability of the shallow covers of slopes, whereas the success of vegetation as slope stabilization measure still needs to be scientifically proven for slopes location of deep landslides, whose current activity is climate-induced, as frequent in the south-eastern Apennines. In this paper, preliminary field data representing the interaction of clayey soils with a selected vegetation species are presented and discussed. These have been logged within a full scale in-situ test site, where the deep-rooted crop spices have been seeded and farmed. The test site (approximative 2000 m2) has been set up in the toe area of the climate-induced Pisciolo landslide. The impact of the vegetation on the soil state is examined in terms of the spatial and temporal variation of the soil water content and suction from ground level down to depth, considering the interaction of the climate data recorded by a meteorological station, both inside and outside the vegetated test site
“In situ and laboratory investigation of the saturated hydraulic conductivity of a clayey soil cover when bare or vegetated”
No full textAdvanced numerical modelling of the geological processes responsible for mid-Pleistocene landslide inception: an insight into possible factors for the current landslide activity
No full textThe Impact of a Wildfire on a Vegetated Topsoil: Field Monitoring and Numerical Modeling
No full textWildfires are generally believed to be detrimental to slope stability by damaging vegetation and altering the thermo-hydro-mechanical properties of soil due to thermal stress and burning. However, the extent to which wildfires may impact on state of the vegetation and soil state is still an open issue, as it depends on several factors such as the fire intensity and persistence, as well as the soil and vegetation state and type. This research focused on a wildfire event that was monitored and back-analyzed using thermal finite element modeling by using Plaxis 2D to understand the impact on the soil post-wildfire state. The study was conducted at a field test site located at the toe area of the Pisciolo hillslope, where selected vegetation had been seeded and farmed to investigate the soil–vegetation–-atmosphere (SVA) interaction. The test site was the location of a wildfire in September 2023, which burnt most of the vegetation. The results show that the heat flux due to the wildfire is in the range between 100 and 150 kW/m2 with a duration of 5–10 min. Field monitoring revealed that significant wildfire-induced temperature variations were confined to the near-surface soil layer, up to a depth of 20 cm of soil, with only slight changes in the soil properties
The impact of a wildfire on a vegetated topsoil: field monitoring and numerical modelling
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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
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