Search results for " Local"
showing 10 items of 2101 documents
Synthesis and crystal structure of novel Ruddlesden–Popper strontium niobium oxynitrides
2002
Abstract The family (SrO)(SrNbO 2-x N) n is the first example of Ruddlesden-Popper strontium niobium oxynitrides and provides layered structures to obtain mixed valence niobium compounds with a variety of oxidation states and transport properties. We have prepared members with n =1 (Sr 2 NbO 3 N) and n =2 (Sr 3 Nb 2 O 5 N 2 ) by solid state reaction of Nb 2 O 5 and SrCO 3 at 900–1050 °C under ammonia flow. These compounds crystallize in the I4/mmm space group and show a range of anionic stoichiometry that together with the N/O ratio determines the formal oxidation state for niobium and therefore the resultant physical properties. Samples of the n =1 member show mixed valence Nb 5+ /Nb 4+ an…
Effect of the host plant on the immunity of a phytophagous insect : influence of grape variety on the ability of the European grapevine moth to defen…
2013
In tritrophic interactions involving phytophagous insects, host plants and natural enemies, trophic levels are highly dependent on each other. Host plant may strongly affect directly phytophagous insect and indirectly natural enemies growing on these phytophagous insects. When a natural enemy attacks a phytophagous insect, the host immune system constitutes the last chance for the host to survive to an infection. A great variation of insect immune system is generally found in populations for susceptibility to pathogens, suggesting that variable selection pressures may have shaped and driven adaptation of immune traits. This project aims to determine the influence of both host plant and natu…
Size dependence of the Josephson critical behavior in pyrolytic graphite TEM lamellae
2014
We have studied the transport characteristics of TEM lamellae of different widths obtained from a graphite sample with electrical contacts at the edges of the embedded interfaces. The temperature dependence of the resistance, as well as the current-voltage characteristics, are compatible with the existence of Josephson-coupled superconducting regions. The transition temperature at which the Josephson behavior sets in decreases with a decreasing interface width and vanishes for widths below 200 nm. This interface-size dependence provides an explanation for differences observed in the transport behavior of graphite-based samples with interfaces, and it appears to be related to the influence o…
Phase-bistable patterns and cavity solitons induced by spatially periodic injection into vertical-cavity surface-emitting lasers
2014
Spatial rocking is a kind of resonant forcing able to convert a self-oscillatory system into a phase-bistable, pattern forming system, whereby the phase of the spatially averaged oscillation field locks to one of two values differing by $\ensuremath{\pi}$. We propose the spatial rocking in an experimentally relevant system---the vertical-cavity surface-emitting laser (VCSEL)---and demonstrate its feasibility through analytical and numerical tools applied to a VCSEL model. We show phase bistability, spatial patterns, such as roll patterns, domain walls, and phase (dark-ring) solitons, which could be useful for optical information storage and processing purposes.
Perception and replication of planar sonic gestures
2012
As tables, boards, and walls become surfaces where interaction can be supported by auditory displays, it becomes important to know how accurately and effectively a spatial gesture can be rendered by means of an array of loudspeakers embedded in the surface. Two experiments were designed and performed to assess: (i) how sequences of sound pulses are perceived as gestures when the pulses are distributed in space and time along a line; (ii) how the timing of pulses affects the perceived and reproduced continuity of sequences; and (iii) how effectively a second parallel row of speakers can extend sonic gestures to a two-dimensional space. Results show that azimuthal trajectories can be effectiv…
Intrahepatic cholangiocarcinoma: Limitations for resectability, current surgical concepts and future perspectives.
2020
Intrahepatic cholangiocarcinoma (iCCA) is the second most common hepatic malignancy and its incidence has been shown to increase significantly during the past decades. Complete surgical resection is currently acknowledged as the only curative treatment option able to provide adequate long-term outcomes. We herein review technical, functional and oncologic limitations for resectability, discuss current surgical aspects as well as highlight the fields in which future research and practice should focus on in order to ameliorate long-term outcomes in patients with iCCA.
Transitioning towards a Sustainable Wellbeing Economy—Implications for Rural–Urban Relations
2021
This article focuses on the question of how a shift from a narrow economic perspective to a wider sustainable wellbeing focus in regional development strategies and actions might change rural–urban relations. A brief review of relevant research and discourses about economic development models provides the foundation for the analysis. The review leads to the development of an analytical framework that puts the notion of sustainable wellbeing at its center. The criteria included in the analytical framework are then used to assess the current situation, challenges and perceived ways forward based on data and analyses from 11 European regions. The focus of the analysis is on different exp…
I luoghi di Montalbano. Una guida
2006
Delocalizzazione produttiva ed effetti territoriali complessi: il caso del Contratto di Programma Tarì Industriale
2008
Questo articolo illustra sinteticamente gli esiti della ricerca valutativa sul Contratto di Programma che ha contribuito alla creazione del Centro Orafo il Tarì, realizzato nella seconda metà degli anni novanta in Campania. Il Centro Orafo, accoglie oggi circa 370 aziende operanti nella produzione e commercializzazione di oggetti di oreficeria e gioielleria, buona parte delle quali provenienti dall’antico Borgo Orefici nel centro storico di Napoli. Nella prima parte sono esplorate le condizioni di contesto entro cui si colloca l’investimento, sia in relazione alle criticità del sistema produttivo manifestate anteriormente alla delocalizzazione, sia rispetto alle dinamiche del settore a live…
Place-based. Sviluppo locale e programmazione 2014-2020
2016
L’Unione Europea nel 2013 ha approvato un nuovo apparato regolamentare che inserisce, nell’attuazione degli obiettivi dei Trattati in materia di coesione socio-economica e territoriale, la metodologia di sviluppo place-based, applicata in Italia dal Programma di Iniziativa Comunitaria Leader (Patti Territoriali). Per gli attori dello sviluppo locale in Italia si tratta di un passo indietro, in quanto diverso è l’approccio sin qui sperimentato. Sviluppo locale o sviluppo place-based: un concetto che è stato spesso al centro del dibattito politico in Italia negli ultimi venti anni, oggi anche nell'Unione Europea, e che riveste un ruolo storico di riferimento rispetto al tema affrontato nel vo…