1,720,964 research outputs found
Protecting an eroding coast: strategies and objectives
No full textThe paper deals with general strategies to be followed when managing an eroding coast. This procedure is based on successive steps, starting from the comprehension of the most likely causes of the erosion phenomenon (local or not) and ending with the selection and design of the most suitable (local) coastal protection intervention. This process involves also risk analyses, to cost–benefit analyses, and must take into account local environmental constrains, social aspects, etc. The paper gives an overview of the whole process, showing also an application to a case history in Italy
Improvement in one-dimensional mathematical modelling of shoreline evolution: an application to a Venetian beach
No full textThe useful, "one-line' models are analyzed in their details and a proposed model of such a tuype is described, and the problems concerning the choice of the number and sequence of representative incident waves are discussed. First of all, the mathematical model was applied to simulate the beach evolutions occurring over the last decades: the field measurements of 1968, 1980, and 1992 were considered in order to test and calibrate the model
Danni da eventi bellici nei boschi di un'area dell'Altopiano dei Sette Comuni (Vicenza)
No full textThe WW1 events that affected many mountain areas in north-eastern Italy hit not only the social and economic structures through the destruction of towns and villages and consequent flight of the populations, but also environmental resources such as pastures, meadows, fields and forests.
The forests were affected both by damage from the artillery used on the battlefields and that due to exploitation for the logistical requirements of the armies.
The effects of artillery damage are still in evidence today as different sized pieces of metal lodged in the wood of the trees. The presence of metal is a severe defect which heavily influences the selling price of the wood and affects its processing.
In order to acquire experimental data which allow the quantity of metal fragments and their diffusion in the trees to be precisely determined, an empirical study was carried out in a forest compartment on the Altopiano dei Sette Comuni (Vicenza - Italy). The results show the tree diameter classes in which metal fragments are more common and promote the advantage of using metal-detector scanning compared to the simple adoption of a discount at auction
Physical Model Tests in the Framework of Beach Nourishment Performance Evaluation
No full textIn the first part of this paper a quick review of the nourishment fundamentals, in terms of benefits and factors promoting the use of such interventions is given at first. The technical issues in nourishment planning are then described considering the specific questions of fill design, of morphological processes and of temporal aspects.
In the second part the contribution that physical model tests can give to the beach nourishment performance evaluation is presented and some results obtained by such experimental approach are presented
Model tests for evaluating beach nourishment behaviour
No full textAfter having shortly discussed about the nourishment fundamentals, focussing the attention on the benefits and on the factors promoting the beach fills, some specific questions on fill design, on related processes and on the temporal aspects of such beach-protecting intervention were addressed and tentatively answered. In the second part, the physical-model tool, as a way for answering to the suggested questions is presented and three different case studies are discussed
Morphological evolution of Bellocchio littoral: evaluation of different alternatives for coastal protection.
No full textIndagine sui danni da eventi bellici in un bosco dell'Altopiano dei Sette Comuni (Vicenza)
No full textGoing 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
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