103,086 research outputs found
Le recenti dinamiche strutturali dell’economia del Mezzogiorno
No full textIl contributo riporta e discute i trend ed i dati economici sulla recente situazione delle aree meridionali e delle relative aziende ivi localizzate, con particolare riferimento a quelli che ne consentono di valutare il livello di proiezione internazionale. Il fine è di definire in modo più circostanziato il framework ed alcune tra le dinamiche strutturali di maggior interesse del Mezzogiorno
The analytical hierarchy process in the supplier selection problem
No full textThe Supplier Selection Problem (SSP) consists of analyzing and measuring the performance of
a set of suppliers in order to rank and select them with the general objective of improving the
competitiveness of the entire supply system. In the analysis, as many factors should be taken
into account, very often conflicting with each other, the problem can be tackled using multicriteria
models and methods. A survey of the scientific literature highlights that the most used
methodology is the Analytical Hierarchy Process (AHP) with its variants.
In this work a careful scrutiny of the papers appeared on international scientific journals in the
recent years on the SSP is provided. In particular the analysis focuses on the use of AHP and its
variants to solve different aspects of the problem. The results of the study allow individuating
opportunities and open issues arising by the use of multi-criteria approaches, with particular
reference to AHP-based models, to model the SSP
Entrepreneurship and Firm Performance. A Research Project Based on Entrepreneur’s Subjective Characteristics
No full textThe paper aims to analyze the effectiveness of the policies implemented to foster entrepreneurship in backward areas. With specific reference to Southern Italy experience, these policies are especially examined to investigate job creation and innovations generated by a number of facility laws specifically issued to establish new firms or plants in the above mentioned areas
Morfologia e morfometria del settore ionico del Golfo di Taranto.
No full textIl versante Ionico del Golfo di Taranto è caratterizzato dalla presenza di alti strutturali e bacini che
rappresentano l’espressione morfologica di sistemi di faglie pleistoceniche transpressive. La dorsale di
Amendolara si estende per 45 Km in direzione N130°E, ed è caratterizzato dalla presenza di tre alti
batimetrici minori (denominati Amendolara, Rossano e Cariati). Verso NE, la dorsale di Capo Spulico si
estende per 40 Km in direzione !N115°E.
Durante la Campagna Oceanografica “Teatioca” sono stati acquisiti 1100Km2 di dati batimetrici
multibeam e profili sismici monocanale ad alta (Sparker) ed altissima risoluzione (Subbottom Chirp).
L’analisi integrata dei nuovi dati ha consentito di ottenere una sintesi morfostrutturale preliminare dell’area
sud-orientale del Golfo di Taranto [Santoro et al., 2012].
L’insieme dei dati morfometrici evidenzia un ruolo chiave nell’attività traspressiva della faglia che borda
a SW la dorsale di Amendolara, in quanto la regolarità dei pendii rivolti a S è legata alla deformazione e
sollevamento dei versanti, che tende a superare l’effetto dei processi erosivi (versanti a controllo morfostrutturale).
Il processo di basculamento guidato dall’azione della faglia sembra essere all’originedei processi
responsabili dell’erosione gravitazionale canalizzata sui pendii esposti a nord (versanti a controllo morfosedimentario).
Sette ordini di terrazzi sono stati riconosciuti sul top del Banco di Amendolara, attraverso tecniche di
analisi dei picchi nel diagramma di distribuzione delle quote [Passaro et al., 2011]. Tale dato e le statistiche
sui profili estratti dal DTM testimoniano la presenza di tassi differenziali di sollevamento ed un complessivo
tilt (verso E) del settore frontale ionico dell’Appennino Meridionale, in accordo con quanto suggerito in
letteratura [Ferranti et al., 2009].
Bibliografia
Ferranti, L., Santoro, E., Mazzella, M.E., Monaco, C., Morelli, D., (2009). Active transpression in the
northern Calabria Apennines, southern Italy. Tectonophysics, 476 (1-2), 226-251.
Passaro, S., Ferranti, L., de Alteriis, G., (2011). The use of high resolution elevation histograms for mapping
submerged terraces: a test from the Eastern Tyrrhenian Sea and the Eastern Atlantic Ocean. Quat. Int.,
232, 1-2, 238-249.
Santoro, E., Ferranti, L., Passaro, S., Burrato, P., Morelli, D., (2012). Morphometric analysis in the offshore
of the southern Taranto Gulf: unveiling the structures controlling the Late Pleistocene-Holocene
bathymetric evolution. Rend. On. Soc. Geol. It., 21 (2), 1132-1135
L'ultimo Egon Schiele. I volti della malattia
No full textIl 1918 è l'ultimo anno di vita di Egon Schiele. L'artista viennese muore a soli ventotto anni di influenza 'spagnola'. Gli ultimi giorni li ha passati accanto a Edith morente, incinta di sei mesi. Il saggio ripercorre quest'ultimo anno seguendo il lavoro febbrile di Schiele che realizza alcuni dei dipinti più famosi del suo percorso artistico
Editorial special issue who will benefit from the transition to the circular economy?
No full textOver the last two decades, the enormous impact of the take-makewaste linear economic model has pushed the academic research
(Uphadhayay et al., 2024; Anaruma et al., 2022; Schoggl ̈ et al., 2020;
Ghisellini et al., 2016; Su et al., 2013) and stakeholders of worldwide
socio-economic systems (such as policy makers, consumers, non-profit
organizations, media) to focus their attention towards the development and adoption of consumption and production models oriented
towards the Circular Economy paradigm (Ellen Mac Arthur Foundation,
2024). Societal stakeholders have been increasingly involved in programs, policies, and strategies aimed at transitioning towards CE (Clube
and Tennant, 2023; Van Bueren et al., 2023). Consequently, the Circular
Economy is gaining momentum (Kirchherr et al., 2023) and is attracting
much of the debate on the search for sustainable solutions (Evans, 2023;
De Lima, 2022; Terra dos Santos et al., 2022) to support the diffusion of
consumption (Shevchenko et al., 2023) and production patterns with
lower impacts on resources leveraging longer lifetimes for enhanced
environmental conservation (Luzzati et al., 2022) and socially just
(Costanza, 2023; D’Urzo and Campagnaro, 2023; Persson and Hinton,
2023; Pitkanen ̈ et al., 2023; Vanhuyse et al., 2022) and cost-effective
waste management supply chains (Zerbino et al., 2023) and systems
(Harala et al., 2022).
Countries are adopting CE strategies, programmes and policies
(Guarnieri et al., 2023; Rebehy et al., 2023; Remme and Jackson, 2023;
Lazarevic et al., 2022) and integrating CE in their sustainability agendas
(Pynol Alberich et al., 2023) even if in a diversified manner, both in EU
(such as between Northern-Western and Southern-Eastern states and
regions) (Awad, 2023; Arsova et al., 2022; Van Langen and Passaro,
2021) and non-EU countries such as Brazil (Guarnieri et al., 2023;
Rebehy et al., 2023) and China (Agutiono et al., 2023; Wang et al.,
2022). Furthermore, consumers/citizens are becoming more aware of
the CE concept and its potential in relation to climate change (Eurobarometer, 2023) and more environmentally responsible in their daily
life (Greene et al., 2024) but showing a resistance to radically change
their consumption habits (Bigliardi et al., 2022).
In terms of physical material flows the adoption of the CE model is
still at the early stage in the worldwide economy since the circularity
rate is only 7.2% (Circular Economy Foundation, 2024), although some
EU countries (e.g. Netherlands and Belgium) have achieved a higher
circularity rate and are able to send back to the economy more than 20%
of the recovered materials (EUROSTAT, 2023). Therefore, it is important
to understand at this initial stage the CE potential of contributing to
mitigate climate change and natural resources consumption (Ghisellini
et al., 2023) but also of pursuing a more sustainable human development
(Clube and Tennant, 2023; Nogueira et al., 2023; Tiep Le, 2022) and
reduce the injustices of the linear model of production and consumption
(Persson and Hinton, 2023; Pitkanen ̈ et al., 2023; Velancia et al., 2023;
Vanhuyse et al., 2022). In other terms, this SI intends to understand
more broadly who the beneficiaries of the CE are.
Particular attention has been dedicated to encouraging the analysis
of the environmental and social impacts and benefits resulting from CE
implementation from a large perspective across R principles beyond
recycling, policy programmes, research projects, methods, scales (micro,
meso, macro and ahead). Moreover, the SI was also intended to stimulate the discussion around the emerging visions of CE model beyond the
mainstream and having the potential of promoting simultaneously at all
scales the values of environmental consciousness and adaptiveness, social justice, qualitative public well-being beyond purely quantitative
economic growth
Advanced technologies to target cardiac cell fate plasticity for heart regeneration
No full textThe adult human heart can only adapt to heart diseases by starting a myocardial remodeling process to compensate for the loss of functional cardiomyocytes, which ultimately develop into heart failure. In recent decades, the evolution of new strategies to regenerate the injured myocardium based on cellular reprogramming represents a revolutionary new paradigm for cardiac repair by targeting some key signaling molecules governing cardiac cell fate plasticity. While the indirect reprogramming routes require an in vitro engineered 3D tissue to be transplanted in vivo, the direct cardiac reprogramming would allow the administration of reprogramming factors directly in situ, thus holding great potential as in vivo treatment for clinical applications. In this framework, cellular reprogramming in partnership with nanotechnologies and bioengineering will offer new perspectives in the field of cardiovascular research for disease modeling, drug screening, and tissue engineering applications. In this review, we will summarize the recent progress in developing innovative therapeutic strategies based on manipulating cardiac cell fate plasticity in combination with bioengineering and nanotechnology-based approaches for targeting the failing heart
Dual Grating Assisted Optical Coupler
No full textAn optical coupler comprises an input waveguide, an intermediate waveguide, an output waveguide, a first grating situated between the input and intermediate waveguides, and a second grating situated between the intermediate and output waveguides such that, in use, light propagating in the input waveguide is coupled into the intermediate waveguide with the assistance of the first grating, and thence is coupled into the output waveguide with the assistance of the second grating. The coupler is a directional coupler, in particular a dual grating-assisted directional coupler, and may be used to couple light between an optical fibre and an integrated semiconductor device, or between dissimilar waveguides
Dual grating-assisted directional coupling between fibers and thin semiconductor waveguides
No full textA novel dual grating-assisted directional coupler (DGADC) for coupling an optical fiber with a thin semiconductor waveguide is proposed. As an example, a DGADC in silicon-on-insulator is discussed. Maximum coupling efficiency in excess of 90% can be obtained using this coupler, while the highest coupling efficiency previously reported was only 40%
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