Riviste Online SApienza - R.O.SA - 2 (Sapienza University of Rome)
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A remarkable new species of the genus Ganyopis from Malacca, Malaysia (Curculionidae: Conoderinae, Mecopini)
Get PDFGanyopis notabilis sp. nov. is described and figured. It represents the fourth described species of Ganyopis and the second known from Malacca (Malaysia). Some morphological notes on the genus are also provided
The species of the booklice genus Liposcelis Motschulsky, 1852 of Belarus (Psocoptera: Liposcelididae)
Get PDFEight species of the apterous genus Liposcelis (Psocoptera: Liposcelididae), L. bostrychophila Badonnel, 1931, L. corrodens (Heymons, 1909), L. decolor (Pearman, 1925), L. pearmani Lienhard, 1990, L. silvarum (Kolbe, 1888), L. formicaria (Hagen, 1865), L. aleksandrowiczi Georgiev, Ostrovsky & Lienhard, 2020 and L. sp. cf. entomophila (Enderlein, 1907), are recorded for Belarus. The latter species is recorded in Belarus for the first time. Brief information about their modern distribution, as well as features of biology and ecology is given
A new subgenus and species of Crepidogaster from Madagascar (Coleoptera: Carabidae, Brachininae, Crepidogastrini)
Get PDFCrepidogaster (Sphaerotyronia) rotundata subg. nov., sp. nov. is herein described on the basis of a male specimen from East Madagascar. The male habitus and genitalia are illustrated, and some considerations are presented about the systematics of the genus Crepidogaster and the tribe Crepidogastrini
A peculiar new genus and species of pollen beetles of the Anthystrix-complex of genera from South Africa (Coleoptera: Nitidulidae, Meligethinae)
Get PDFA peculiar new species of pollen beetles of the Anthystrix complex of genera, Austroborovecia anthystrixina gen. nov., sp. nov., is described from northern South Africa (Limpopo Province). This new species, although it appears very similar in external aspect to members of the genus Anthystrix Kirejtshuk, 1981 (including half a dozen species, all from South Africa), exhibits a series of peculiar morphological characters representing obvious autapomorphies (e.g., the male antennomeres III to V flatly depressed, larger and markedly wider than antennomeres II and VI, a large semi-circular tomentose and blackish area on the orange male last abdominal ventrite, more developed teeth on the outer edge of front tibiae, occipital sulci bordering the dorsal surface of the eyes indistinct, virtual absence of distinct hairs along the outer elytral borders, and peculiarly shaped male genitalia); this series of morphological traits is combined instead with the absence of several of the most important and diagnostic characters of all true Anthystrix species (such as the strongly modified and enlarged antennal club in males, the unique "violin-shaped" median lobe of the aedeagus, and the very deep and narrow longitudinal median incision of the proximal part of the tegmen). Despite the evident outer similarity with most species of Anthystrix, due to some other shared external characters (such as the long, dense and thick golden pubescence covering the whole body, the strongly sinuated and modified male hind tibiae, and the male metaventrite with a large and deep pentagonal impression), the new species cannot be placed in this clade, and requires the institution of a new genus, which maybe represents the sister-group of Anthystrix. The larval hostplant of the new species is thus far unknown, although almost certainly it is included among members of the tribe Tarchonantheae (Asteraceae), as for all other known members of the so-called Anthystrix-complex of genera
Location models of electric charging stations in the city of Rome
Get PDFThe issue of the location of charging stations for electric vehicles is becoming very important due to governmental decisions on electric mobility. Many authors have addressed this problem with the support of graph theory and graph optimization. In dealing with this problem, typical operational research models and approaches used forfacility location, such as p-median, coverage problem and queuing theory, have been resorted to. In this paper we apply these models to the location of charging stations in the city of Rome. In particular, we analyze the suitability of existing charging sites and suggest where to implement new chargers using a p-median-like model. Finally, we study the waiting time distribution when the nearest charging stations are occupied, and we use queuing theory to show how much demand for the service would improve with the implementation of the new charging points
Prima del “Principe repubblicano”. Machiavelli, principato “civile” e repubblica
Get PDFBefore the “Principe repubblicano”. Machiavelli, “Civil” Principality and Republic Beginning with an analysis of the ways in which Machiavelli discusses the terms of “liberty”, “republic” and “principality” in his political works, this contribution demonstrates how some of the content referable to them later characterized the current of thought that can be traced back to the idea of “republican principality”. In particular, this essay shows how the reuse of certain themes by late sixteenth- and early seventeenth-century authors in many cases conceals a process of transposition of famous Machiavellian vocabulary and expressions into political concepts that sometimes significantly diverge from their original and are revealing of the polysemous use of terms from the general political vocabulary of the time
Il “Principe repubblicano” di Paolo Sarpi*
Get PDFPaolo Sarpi’s draft of the treatise Della potestà de’ prencipi is a very important example of the revolution that took place in the field of law and its complex relationship with theology and politics between the sixteenth and seventeenth centuries. Considered lost until its publication in 2006 by Nina Cannizzaro, Sarpi’s draft calls into question some essential points of his intellectual biography. 
Study on land degradation monitoring in Shanxi by using remote sensing images
No full textLand degradation is a serious environmental problem. This paper briefly introduces the concept of remote sensing image technology and land degradation, and describes the basic process of using remote sensing image to monitor land degradation. Then, Shanxi Province was taken as an example to analyze the land cover type change and net primary productivity (NPP) change during 2016-2021. The annual average precipitation showed an increasing trend, and there was a significant positive correlation between the area of land types such as forest lands, grasslands, and water areas and the annual average precipitation. Moreover, the proportion of forest land, grassland, and construction land increased while the proportion of cultivated land gradually decreased; however, the proportion of water area remained basically unchanged. The local NPP showed an overall upward trend; NPP increased significantly or extremely significantly in most regions, while NPP decreased significantly or extremely significantly in a small part of regions
Hazard assessment of a rocky slope of Mount Pellegrino (Northern Sicily): a comparative study of direct and indirect approaches
No full textThe assessment of landslide hazard related to slopes in fractured rock masses is generally correlated with the probability of occurrence of potential rockfall phenomena. The propensity to detachment of rock blocks can be defined through direct or indirect approaches. The first, widely used for decades, is regulated by the International Society for Rock Mechanics recommendations, and provides for the definition of a series of parameters for discontinuities that cross a line designated by the operator, according to the so-called “scanline” methodology. The most applied indirect approaches are based on the construction of a 3D model of the studied front through input data acquired by a digital camera, laser scanner or radar. These two different approaches were used to analyze the discontinuities orientation of a rocky slope on the west side of Mt. Pellegrino (northern Sicily). In this context, it is essential to anticipate rockfall, given the presence of densely urbanized areas at the foot of the rocky slope. The main discontinuity sets were obtained from traditional geo-structural analysis and 3D Point Cloud model of the slope; the latter were derived by applying the Structure from Motion technique on frames captured during the surveys. The kinematic analysis applied to the obtained data allowed us to define from a geomechanical perspective, the main modes of failure. Moreover, back analyses were carried out on the already collapsed blocks to reveal the most likely rockfall volume and reached distance
Satellite radar interferometry for the analysis of potential instability in urban areas of high historical and cultural value
No full textSatellite radar remote sensing techniques are non-invasive methodologies that can be effectively used for diagnostic purposes, measuring displacements, and monitoring cultural assets, architectural structures, and archaeological areas without injuring their integrity. The environmental condition and hydrogeological hazard in the Italian territory could make its invaluable Cultural Heritage at risk. Therefore, within the National Extraordinary Plan for Monitoring and Conservation of Cultural Heritage, an agreement has been established between the Ministry of Culture and the UNESCO Chair of the UNiversity of Florence on Prevention and Sustainable Management of Geo-hydrological Hazard to analyse ground motion rates on built-up areas by means of acquisition and PSI (Persistent Scatterers Interferometry) elaboration of high-resolution Cosmo-SkyMed synthetic aperture radar (SAR) satellite data (X-band). This technique can provide useful support on the conservation and protection of Cultural Heritage, as it endorses an innovative perspective on the condition and safety of historical sites, monuments, archaeological sites and artworks, thus contributing significantly to their preservation over time. Through SAR interferometric techniques, it is possible to identify millimetric displacements related to environmental threats, such as slow-moving landslides. This work proposes the classification of buildings of urban areas by using two indices based on PSI data coverage and deformation rates: the data coverage index in each building (Id) and the average velocity index of PSI data in each building and its surroundings (Ivmean), representing deformation rates in a locally scaled, easily understandable color-coded format. This method has already been tested in scientific literature on other SAR datasets for evaluating instability at the building scale. The approach aims to develop a fast and low-cost system to assess buildings that are potentially exposed to deformation and therefore more susceptible to damage in heavily urbanized areas with high historical-cultural value. In order to safeguard Cultural Heritage from natural disasters, the proposed methodology integrates a high degree of scientific and technological expertise and presents an updated and accurate screening of potential deformations due to hydrogeological hazards