5,920 research outputs found
UAV surveying for a complete mapping and documentation of archaeological findings. The early Neolithic site of Portonovo
The huge potential of 3D digital acquisition techniques for the documentation of archaeological sites, as well as the related findings, is almost well established. In spite of the variety of available techniques, a sole documentation pipeline cannot be defined a priori because of the diversity of archaeological settings. Stratigraphic archaeological excavations, for example, require a systematic, quick and low cost 3D single-surface documentation because the nature of stratigraphic archaeology compels providing documentary evidence of any excavation phase. Only within a destructive process each single excavation cannot be identified, documented and interpreted and this implies the necessity of a re- examination of the work on field. In this context, this paper describes the methodology, carried out during the last years, to 3D document the Early Neolithic site of Portonovo (Ancona, Italy) and, in particular, its latest step consisting in a
photogrammetric aerial survey by means of UAV platform. It completes the previous research delivered in the same site by means of terrestrial laser scanning and close range techniques and sets out different options for further reflection in terms of site coverage, resolution and campaign cost. With the support of a topographic network and a unique reference system, the full documentation of the site is managed in order to detail each excavation phase; besides, the final output proves how the 3D digital methodology can be completely integrated with reasonable costs during the excavation and used to interpret the archaeological context. Further contribution of this work is the comparison between several acquisition techniques (i.e. terrestrial and aerial), which could be useful as decision support system for different archaeological scenarios. The main objectives of the comparison are: i) the evaluation of 3D mapping
accuracy from different data sources, ii) the definition of a standard pipeline for different archaeological needs and iii) the provision of different level of detail according to the user need
#digitalnomads, #solotravellers, #remoteworkers : a cultural critique of the travelling entrepreneur on Instagram
As opposed to traditional nomads, backpackers, or tourists, digital nomads are defined as Internet-enabled remote workers, who maintain a focus on connectivity and productivity even in leisure. This essay discusses the relationship between Instagram and the digital nomad from a theoretical perspective, proposing a critique of the aesthetics and urban politics that underlie this figure. Inspired by recent theories that combine geopolitical and technological insight with a speculative approach, the paper positions the digital nomad as a cultural avatar of contemporary neoliberalism, which celebrates a depoliticised aesthetics of work and helps establish a material geography of globalisation through social media. In particular, the essay leverages the concept of tagging (not only intended as the use of hashtags like #digitalnomad, #solotraveller, or #remotework, but also geotagging) as a tool for cultural critique, discussing Instagram as a key site of intersection between the imaginary appeal of the travelling entrepreneur and the material effects of globalised gentrification. The conclusion provocatively suggests that, with the increasing economic and geopolitical influence of digital nomadism, Instagram might become a site of negotiation of the figure's culture and aesthetics, potentially steering them towards a more radical reimagination of borders and life beyond work. By offering a cultural critique of the digital nomad, the essay contributes to critical discourse on Instagram as a cultural platform
Evolution of productive and biodiversity features in lucerne fields of different ages
Received: January 10th, 2022 ; Accepted: February 23rd, 2022 ; Published: April 1st, 2022 ; Correspondence: [email protected] sativa is a legume forage crop characterized by high production of forage,
with a notable nutritive value, but in mountain areas duration of the crop could be remarkably
affected by severe environmental conditions. To assess the vegetation evolution of lucerne crops
in relation to crop age, data from fields of lucerne of different ages were collected. The aim is the
evaluation of lucerne productive performances, evolution of forage quality and assessment of
recovery by autochthonous species that naturally recolonize the studied areas in relation to age of
the cropped species. With increasing years, lucerne population was significantly decreased and
replaced by different functional types of plants, such as perennial graminoids and short-lived
forbs. Biodiversity increased significantly along time, and evolution of similarity indices
demonstrated an evolution of vegetation toward that represented by reference grassland of the
area. Productive characteristics of forage, in terms of aboveground biomass and quality, were
negatively affected by age. Results permitted to assess the evolution of different features of
lucerne for a mountain environment and to hypothesize the appropriate management for this
resource, that could contemplate also the evolution towards the reconstitution of the reference
habitat for the studied area
Evolution of production and forage quality in sown meadows of a mountain area inside Parmesan cheese consortium
Received: January 5th, 2021 ; Accepted: April 7th, 2021 ; Published: May 4th, 2021 ; Correspondence: [email protected] meadows, encompassing alfalfa and grass-legume mixtures, are the forage crops
on which is based Parmesan cheese production system in the mountain area of the Apennines
(central Italy). These grassland types experience, during their development, deep changes in terms
of production potentiality, botanical composition and forage quality, thus these meadows have to
be periodically renewed to guarantee adequate productive and qualitative performances. To have
an accurate assessment of this evolution along time, a survey was performed in different mountain
farms inside the Parmesan cheese consortium, analysing alfalfa meadows and grass-legumes
mixtures of different ages. Grasslands were monitored during 2019, performing three samplings
during growing season. Aboveground biomass production, botanical composition and crude
protein content were collected during the survey. Results permitted to evaluate the level of
production decrease along years, the evolution of analysed parameters among cutting dates and
the dependence of productive and qualitative features on botanical composition and presence of
sown species in the swards. Results were useful to hypothesize the composition of future
mixtures, to improve management issues and to delineate the possible duration of sown meadows
for the area with respect to different purposes in terms of desired productive or qualitative
objectives
Vector Boson Pair Production via Vector Boson Fusion at NLO QCD
NLO QCD corrections to Vector Boson Pair Production via Vector Boson Fusion
have recently been calculated and implemented in a parton-level Monte-Carlo
program with full experimental cuts. We briefly sketch the elements of the
calculation and show numerical results for the Large Hadron Collider.Comment: 6 pages, 3 figures, presented by G.Bozzi at IFAE 2007 (Napoli, April
2007) and HEP 2007 (Manchester, July 2007
Olive Mill Wastewater Valorization in Multifunctional Biopolymer Composites for Antibacterial Packaging Application
Olive mill wastewater (OMW) is the aqueous waste derived from the production of virgin olive oil. OMW typically contains a wide range of phenol-type molecules, which are natural antioxidants and/or antibacterials. In order to exploit the bioactive molecules and simultaneously decrease the environmental impact of such a food waste stream, OMW has been intercalated into the host structure of ZnAl layered double hydroxide (LDH) and employed as an integrative filler for the preparation of poly(butylene succinate) (PBS) composites by in situ polymerization. From the view point of the polymer continuous phase as well as from the side of the hybrid filler, an investigation was performed in terms of molecular and morphological characteristics by gel permeation chromatography (GPC) and X-ray diffraction (XRD); also, the thermal and mechanical properties were evaluated by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic thermomechanical analysis (DMTA). Antibacterial properties have been assessed against a Gram-positive and a Gram-negative bacterium, Staphylococcus aureus and Escherichia coli, respectively, as representatives of potential agents of foodborne illnesses
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