173,656 research outputs found
Phyllodrepa melis Hansen 1940
No full textPhyllodrepa melis HANSEN 1940 Phyllodrepa melis HANSEN 1940 Phyllodrepa linderi SCHEERPELTZ 1966 nov.syn. Lectotype (male) (here designated) labelled / Freiburg 1934 / ex coll. Scheerpeltz (blue) / Typus Phyllodrepa Linderi O. Scheerpeltz (red) / vidit A. Zanetti 1985 / Lectotype Phyllodrepa linderi Scheerp. des. A. Zanetti 2008 / Phyllodrepa melis Hansen det. Zanetti 2008; paralectotype with the same data (NHMW). C o m m e n t s: Phyllodrepa linderi was described as closely related to P. melis, a North and Central European species inhabiting the burrows of badger (Meles meles). In a previous work (ZANETTI 1987) I considered the synonymy of these taxa most likely. I have re-examined the type series and designated the lectotype, whose aedeagus is deformed by the dryness, as often happens in the Omaliinae (Fig. 12), but has the general shape that corresponds to that of P. melis (Fig. 11). Also the external characters fall in the variability range of P. melis.Published as part of Zanetti, A., 2008, Synonymies in the European Omaliinae, with notes on distribution (Coleoptera: Staphylinidae), pp. 979-992 in Linzer biologische Beiträge 40 (1) on page 982, DOI: 10.5281/zenodo.542997
Les productions céramiques en Sardaigne au IVe millénaire av. J.-C. Nouvelles données sur le village de Su Coddu-Canelles (Selargius, Cagliari)
No full textCette étude fait partie du projet de recherche de l’Université de Sassari « Archéologie des habitats préhistoriques sardes », dirigé par Maria Grazia Melis. Le but principal est la reconstitution du cadre environnemental et socio-économique des phases finales du Néolithique sarde et du début du Chalcolithique, caractérisé par les ultimes aspects du « phénomène » Ozieri. La première étape de la recherche a été consacrée à l’analyse typologique de la céramique dérivée d’Ozieri des IVe et IIIe millénaires av. J.-C., et a impliqué la réorganisation des données publiées, l’élaboration d’une sériation et d’une hypothèse de séquence culturelle. Par la suite, la fouille du village de Su Coddu-Canelles (Selargius, Cagliari) a permis l’acquisition de données primaires et de nouvelles datations 14C, qui confirment la séquence déterminée par l’analyse typologique. Enfin l’étude morpho-technologique de la production artisanale a montré son caractère « opportuniste » qui nous amène à une nouvelle vision de l’organisation de la production et de l’économie du villageQuesto studio si inserisce nell’ambito del progetto di ricerca dell’università di Sassari Archeologia degli insediamenti preistorici della Sardegna, coordinato da Maria Grazia Melis. Lo scopo principale è la ricostruzione del quadro ambientale e socioeconomico delle fasi finali del Neolitico sardo e dell’inizio del Calcolitico, caratterizzate dagli ultimi aspetti del “fenomeno” Ozieri.
La prima fase della ricerca è stata dedicata all’analisi tipologica della ceramica di derivazione Ozieri del IV e III millennio BC, che ha implicato la riorganizzazione dei dati editi, l’elaborazione di una seriazione e di un’ipotesi di sequenza culturale. Successivamente lo scavo dell’insediamento di Su Coddu-Canelles (Selargius, Cagliari) ha permesso di acquisire dati primari e nuove datazioni al C14, che confermano la sequenza determinata dall’analisi tipologica. Infine lo studio morfo-tecnologico della produzione artigianale ha mostrato il suo carattere “opportunistico”, che ci ha portato ad una nuova visione dell’organizzazione della produzione e dell’organizzazione economica del villaggioThis study is part of the research project of the University of Sassari, called “Archaeology of Sardinian prehistoric settlements ", led by Maria Grazia Melis. The main aim is the reconstruction of environmental and socio-economic phases of the Sardinian Neolithic and Early Eneolithic, characterized by the final aspects of the "phenomenon" Ozieri.
The first stage of research was dedicated to the typological analysis of by-pass Ozieri ceramic of 4th and 3rd millennium B.C., which has involved the reorganization of the published data, the development of a seriation and an assumption of cultural sequence. Thereafter, the excavation of the village of Su-Coddu Canelles (Selargius, Cagliari) allowed the acquisition of primary data and new C14 dating, which confirmed the sequence determined by the typological analysis.
Finally, the morpho-technological study of production has shown its "opportunistic" nature, which brings us to a new vision for the organization of the production and economic organization of the village
Morphological and compositional investigation of Krieger crater (Moon)
No full textKrieger crater is an impact lunar crater located in the Oceanus Procellarum, on the western near-side of the Moon. It is partly overlaid by Van Biesbroeck impact crater on the southern rim; a sinuous rille, Rima Krieger, originates from the western rim. Krieger is surrounded by wrinkle ridges, linear structural features, and different mare materials. In order to investigate the geomorphological setting, we used remote sensing datasets from Lunar Reconnaissance Orbiter and Kaguya for photogeological and topographic analysis through high-resolution imagery and DEM, and Moon Mineralogy Mapper hyperspectral data for surface compositional investigation. Krieger is characterized by a polygonal-shaped rim, an asymmetrical ejecta blanket, oriented north-south (indicating a potential oblique impact) and a complex floor configuration, with morphologic features, like hummocks, large mounds, a possible central peak, and unclear concentric fractures. Both Krieger and Van Biesbroeck walls exhibit melt coating features, fresh exposed materials, melt veneers, and mass wasting morphologies. Hyperspectral analysis determined several surface mineral compositions, differing especially in olivine and glass content. Important compositional differences were observed in the Krieger floor, where mare-like basalts have been detected, suggesting an internal post-impact volcanism which resulted in the breaching of the western rim and subsequent lava flow outside the crater, originating Rima Krieger. We found also the contamination of highland material in the southern ejecta, potentially derived from the Aristarchus crater impact. Thus, this complex geological setting suggests that post-impact modification processes, including volcanism, tectonic movements and later impacts, played a key role in shaping up the present Krieger crater
On a quest to reduce fragmentation in the care of frail older people. Development and implementation of an e-health intervention
No full textContains fulltext :
100610.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 14 november 2012Promotores : Olde Rikkert, M.G.M., Weel, C. van Co-promotores : Melis, R.J.F., Heinen, M.M
Lattice strain at c-Si surfaces: a density functional theory calculation
No full textThe measurement of the Avogadro constant by counting Si atoms is based on the assumption that Si balls of about 94 mm diameter have a perfect crystal structure up to the outermost atom layers. This is not the case because of the surface relaxation and reconstruction, the possible presence of an amorphous layer, and the oxidation process due to the interaction with the ambient. This paper gives the results of density functional calculations of the strain components orthogonal to crystal surface in a number of configurations likely found in real samples
Evidences of carbonate preservation on the outer continental slope in the Western Ross Sea (Hallett Ridge and Central Basin, Antarctica)
No full textLate Quaternary Antarctic Ice Sheet (AIS) changes can be investigated by analyzing marine sediments (gravity and box cores) collected on the continental shelves and along the continental margins of Antarctica. These sites are strongly influenced by the ice sheet/shelf sediment drainage and inflow/outflow of polar water masses. In this respect, the continental slope of the Western Ross Sea (WRS) is still poorly studied, in particular its history is affected by uncertainties due to the scarcity of well-preserved calcareous foraminifera preventing the production of reliable age models.
We present the results of a study made on one gravity core (KI13-C2; Melis et al., 2021) and three box-cores (KI13-bc2, bc3 and bc4; Torricella et al., 2021) located on the Hallett Ridge and in the Central Basin where the presence of carbonate-rich intervals offers the opportunity, to time-reconstruct the AIS evolving changes since the Marine Isotopic Stage (MIS) 2. These intervals correlated with other carbonate layers identified in cores collected along the WRS continental slope provide important insights about a large-scale break-up of the ice shelf/sea ice system.
This study has been conducted in the framework of the STREAM Project (Late Quaternary evolution of the ocean-ice sheet interactions: the record from the Ross Sea continental margin, Antarctica; period 2019-2021), funded by the Italian Ministry of Foreign Affairs and International Cooperation and the National Research Foundation of Korea, and thanks to a grant approved by the Department of Mathematics and Geoscience, University of Trieste.
Bibliographic references
Melis R., Capotondi L., Torricella F., Ferretti P., Geniram A., Hong J.K., Kuhn G., Khim B.-K., Kim S., Malinverno E., Yoo K.C. and Colizza E. (2021) - Last Glacial Maximum to Holocene: paleoceanography of the northwestern Ross Sea inferred from sediment core geochemistry and micropaleontology at Hallett Ridge. J. of Micropal., 40, 15-35.
Torricella F., Melis R., Malinverno E., Fontolan G., Bussi M., Capotondi L., Del Carlo P., Di Roberto A., Geniram A., Kuhn G., Khim B.-K., Morigi C., Scateni B. and Colizza E. (2021) – Environmental and Oceanographic Conditions at the Continental Margin of the Central Basin, Northwestern Ross Sea (Antarctica) Since the Last Glacial Maximum. Geosciences, 11, 155
Identifying and measuring the impact of cultural events on hotels’ performance
No full textPurpose: Focusing on two beer festivals held in Nottingham, England, this study aims to evaluate their indirect impact on the performance of city hotels. This study builds on theoretical insights from the revenue management literature to shed empirical light on the potentially beneficial effects of events on the hotels’ performance. This study investigates the impact of the differential support offered by the destination management organisation (DMO) over two years. Design/methodology/approach: Using online prices posted in advance of the events on an online travel agent, the authors assess hotel performance for each day of the events relative to the same day of the week in a week with no event. A similar comparison is made to assess the impact across two different years. In both cases, an ordinary least squares methodology was used. Findings: Both events appear not to have had a strong impact on hotel prices and occupancy in 2016, i.e. when the DMO’s promotional effort was more proactive. Instead, in 2017, one event registered higher hotel prices and occupancy both relative to the year before and to the “business as usual” week. Practical implications: The study identifies the existence of an indirect positive economic impact of the events on the hospitality sector. Originality/value: The investigation adopts a more naturalistic experimental design to collect the data, which allows the authors to control for both the impact on prices and occupancy at the level of the single hotel. The evidence is therefore micro-founded. Moreover, results shed light on the role played by the DMO
Architecture, creusement et évolution des hypogées à la fin du Néolithique: la nécropole de S'Elighe Entosu (Sassari, Sardaigne)
No full textIn Sardinia, hypogea were dug with increasing frequency in the 4th millennium BC, especially in the
north-western part of the island. The S’Elighe Entosu necropolis is composed of eight hypogea dug between
the Final Neolithic and the Bronze Age. Maria Grazia Melis and her team are currently studying this site.
Their research addresses various topics, including the positioning of the necropolis on the landscape, the
architecture of the tombs and the diverse phases of related human activity. The architectural data was
recently updated through a study of the excavation techniques employed to create the monuments. This
new information has been fundamental to understanding the articulation of human presence at the site
and the history of the various modifications made to the hypogea. The study of the excavation is based on
analysis of the tool marks on the monument walls and of the tools found in Tomb IV. Experimentation has
played an important role in this work. This research has led to the creation of a database of tool-marks, the
study of picks and the experimental reproduction of this type of tool.Le creusement des hypogées funéraires connaît en Sardaigne un important développement au IVe
millénaire BC, notamment dans la partie nord-ouest de l’île. La nécropole de S’Elighe Entosu est un site
présentant huit hypogées allant du Néolithique final à l’âge du bronze. Elle est le cadre de recherches menées
par Maria Grazia Melis et son équipe. Ces recherches ont vu le développement de plusieurs problématiques
liées à l’insertion de cette nécropole dans le paysage, l’architecture des tombes et les multiples phases de
fréquentation de ce site. Dernièrement les données concernant l’architecture ont connu un développement
nouveau par le biais de l’étude des techniques de creusement des monuments. Ces informations sont
fondamentales pour comprendre l’articulation du site et l’histoire des différents remaniements des hypogées.
L’étude du creusement se base sur l’analyse des traces présentes sur les parois des monuments et sur le
macro outillage découvert dans la tombe IV. Une place importante est donnée à l’expérimentation. Ces
recherches ont mené à la création d’une base de données sur les traces, l’étude des pics de creusement et
la réalisation expérimentale de ce type d’outil
- …
