Filters








817 Hits in 1.3 sec

Building a low carbon society

Maria da Graça Carvalho, Matteo Bonifacio, Pierre Dechamps
2011 Energy  
This paper presents the strategy of the European Union in the field of energy and climate change. At the heart of the package are three commitments to be met by 2020: to reduce greenhouse gas emissions by at least 20%, to ensure that 20% of final energy consumption is met with renewable sources, and to raise energy efficiency by 20%. This strategy is based on the scientific consensus drawn by the International Panel for Climate Change, and implements the EU political strategy to limit the
more » ... pogenic temperature rise to no more than 2 C. A Directive for the geological storage of CO 2 is another integral part of the package. This should enable the development and subsequent deployment of zero emission power plants. From a research and technology perspective, the Strategic Energy Technology Plan (SET-Plan) lists several energy technologies which will be required to reconcile economic growth and a vision of a decarbonised society. The EU climate and energy package and the SET-Plan are part of the solution both to the climate crisis and to the current economic and financial crisis. They represent a green "new deal" which will enhance the competitiveness of EU industry in an increasingly carbon-constrained world.
doi:10.1016/j.energy.2010.09.030 fatcat:wd63jc5fx5cihml4ye5r4uveju

Peer-Mediated Distributed Knowledge Management [chapter]

Matteo Bonifacio, Paolo Bouquet, Gianluca Mameli, Michele Nori
2004 Lecture Notes in Computer Science  
; Bonifacio, Bouquet, & Traverso 2002; Bonifacio, Bouquet, & Cuel 2002) for a detailed discussion of this claim).  ...  For more details see (Bonifacio, Bouquet, & Cuel 2002) .  ... 
doi:10.1007/978-3-540-24612-1_2 fatcat:wva7bkm47rbr5blktn5jvj7lfy

Rationality, Autonomy and Coordination: The Sunk Costs Perspective [chapter]

Matteo Bonifacio, Paolo Bouquet, Roberta Ferrario, Diego Ponte
2003 Lecture Notes in Computer Science  
Our thesis is that an agent 1 is autonomous only if he is capable, within a non predictable environment, to balance two forms of rationality: one that, given goals and preferences, enables him to select the best course of action (means-ends), the other, given current achievements and capabilities, enables him to adapt preferences and future goals. We will propose the basic elements of an economic model that should explain how and why this balance is achieved: in particular we underline that an
more » ... gent's capabilities can often be considered as partially sunk investments. This leads an agent, while choosing, to consider not just the value generated by the achievement of a goal, but also the lost value generated by the non use of existing capabilities. We will propose that, under particular conditions, an agent, in order to be rational, could be led to perform a rationalization process of justification that changes preferences and goals according to his current state and available capabilities. Moreover, we propose that such a behaviour could offer a new perspective on the notion of autonomy and on the social process of coordination. 1 In this paper we do not intentionally draw any distinction between artificial and human agents, but we rather discuss the concept of agent in general.
doi:10.1007/3-540-39173-8_3 fatcat:lhri2ee5abafvhp5uvnqnvww7u

Social Innovation: a Novel Policy Stream or a Policy Compromise? An EU Perspective

Matteo Bonifacio
2014 European Review  
Spurred by the recent global economic crisis, Social Innovation (SI) has gained increasing attention in the European Commission (EC) agenda. However it remains a heterogeneous and ill-defined concept, whose boundaries are unclear. Presently within EC discussions, it encapsulates a variety of concepts from social enterprises to societal change. Adopting an ethnographic methodology, this analysis provides insight into the contrasting official "front-stage" and the "back-stage" views, constraints
more » ... nd practices by which SI has been adopted and promoted by the EC. While the "frontstage" perspective is more intentionally based on the official situations, documents, and statements, the "back-stage" is informed by both the ethnographic analysis and its relationship with the "front-stage" perspective. The main finding of the analysis is that SI might be presumably seen as the only way to align the Commission's conservative-liberal policy, which is rooted in the Lisbon Agenda, with the pressing social demands which stem from the 2008 financial crisis. However, this analysis also indicates that, rather than a novel policy stream, SI can also be seen as a policy compromise that can be used to detract from debates around the need to develop a full-fledged EU Social Policy; more deeply, detract the policy debate from facing a thorough reflection on our society and development model. The analysis will also provide an overview of the risks associated with current thinking viewed from the perspective of EU players operating in the socio-political domain.
doi:10.1017/s1062798713000707 fatcat:7gvxoulpxfc6jjyeglncjjxuyi

Context matching for electronic marketplaces: a case study

MATTEO BONIFACIO, ANTONIA DONÀ, ALESSANDRA MOLANI, LUCIANO SERAFINI
2003 Knowledge engineering review (Print)  
standardizing semantics seems to be conceptually wrong, more than practically unfeasible, if semantic heterogeneity is read in terms of richness to be exploited rather than in terms of noise to be reduced [Bonifacio  ... 
doi:10.1017/s0269888904000128 fatcat:exmfnvrnsngfbd3youoy2dhgcu

High-speed stars: Galactic hitchhikers

E. Caffau, L. Monaco, P. Bonifacio, L. Sbordone, M. Haywood, M. Spite, P. Di Matteo, F. Spite, et al.
2020 Astronomy and Astrophysics  
Spite et al. 2005; François et al. 2007; Bonifacio et al. 2009 ). Fig. 2 . 2 Spectra of the two most metal-poor stars.  ...  Di Matteo et al. 2019). large as a few kpc (thick disc) or as small as a few hundred pc (thin disc).  ... 
doi:10.1051/0004-6361/202038057 fatcat:p3gjhzm2djajhh36jy775bfjy4

A new institutional reading of knowledge management technology adoption

Carlo Rizzi, Diego Ponte, Matteo Bonifacio
2009 Journal of Knowledge Management  
With the rising of e-commerce in the past few years, distinct buying patterns and preferences have emerged for specific groups and other demographics. Since e-commerce is still a relatively new phenomenon in B&H, our goal was to collect enough information and measure those patterns in order to understand how consumers connect with the new technology. This paper lays the foundation with brief introduction to definition of e-commerce, followed by history timeline of e-commerce evolution and some
more » ... mportant trends and factors which are generally known to have influence on people's attitude toward online shopping. This is then followed by their general perceptions and preferences of online shopping including product and payment option selection. Each of these e-commerce "generalities" is compared to the information achieved as a result of collected surveys whose respondents are from different regions of Bosnia & Herzegovina. Furthermore, it will also investigate the favorable as well as negative website characteristics 3 rd International Symposium on Sustainable Development, May 31 -June 01 2012, Sarajevo 260 and sum up the positive elements into a description of an e-commerce website that would be suitable to the group being most present as an online buyer.
doi:10.1108/13673270910971842 fatcat:2g33tvokxffx3antk33chijiy4

Quantum-state engineering assisted by entanglement

Matteo G. A. Paris, Mary Cola, Rodolfo Bonifacio
2003 Physical Review A. Atomic, Molecular, and Optical Physics  
We suggest a general scheme for quantum state engineering based on conditional measurements carried out on entangled twin-beam of radiation. Realistic detection schemes such as on/off photodetection, homodyne detection and joint measurement of two-mode quadratures are analyzed in details. Imperfections of the apparatuses, such as nonunit quantum efficiency and finite resolution, are taken into account. We show that conditional on/off photodetection provides a reliable scheme to verify
more » ... ality, whereas conditional homodyning represents a tunable and robust source of squeezed light. We also describe optical teleportation as a conditional measurement, and evaluate the degrading effects of finite amount of entanglement, decoherence due to losses, and nonunit quantum efficiency.
doi:10.1103/physreva.67.042104 fatcat:d3zsoh6vijgwjktm6a7z2utvku

K-Trek: A Peer-to-Peer Approach to Distribute Knowledge in Large Environments [chapter]

Paolo Busetta, Paolo Bouquet, Giordano Adami, Matteo Bonifacio, Francesco Palmieri
2004 Lecture Notes in Computer Science  
In this paper, we explore an architecture, called K-Trek, that enables mobile users to travel across knowledge distributed over a large geographical area (ranging from large public buildings to a national park). Our aim is providing, distributing, and enriching the environment with location-sensitive information for use by agents on board of mobile and static devices. Local interactions among K-Trek devices and the distribution of information in the larger environment adopt some typical
more » ... peer patterns and techniques. We introduce the architecture, discuss some of its potential knowledge management applications, and present a few experimental results obtained with simulation.
doi:10.1007/978-3-540-25840-7_18 fatcat:3ubc7jprtjdlrdsmikqgzdzmf4

A condensate in a lossy cavity: collective atomic recoil and generation of entanglement

Mary M. Cola, Matteo G. A. Paris, Nicola Piovella, Rodolfo Bonifacio
2004 Journal of Modern Optics  
The interaction between a Bose-Einstein condensate and a singlemode quantized radiation field in the presence of a strong far-off-resonant pump laser generates, in proper regimes, atom-atom and atom-field entanglement. The effects of cavity losses are taken into account and an analytic solution of the corresponding master equation is given in terms of the Wigner function of the system. Journal of Modern Optics
doi:10.1080/09500340410001664458 fatcat:2jxcrspvyfal5myr7oi4h3iija

Entanglement in a Bose–Einstein condensate by collective atomic recoil

Mary M Cola, Matteo G A Paris, Nicola Piovella, Rodolfo Bonifacio
2004 Journal of Physics B: Atomic, Molecular and Optical Physics  
results in an exponential gain of the cavity mode and in the spontaneous formation of a density grating (bunching) in the BEC, as described in the collective atomic recoil lasing (CARL), first proposed by Bonifacio  ... 
doi:10.1088/0953-4075/37/7/064 fatcat:u33mzefdfbavlpxzsfg3g4odmq

Teleportation improvement by inconclusive photon subtraction

Stefano Olivares, Matteo G. A. Paris, Rodolfo Bonifacio
2003 Physical Review A. Atomic, Molecular, and Optical Physics  
Inconclusive photon subtraction (IPS) is a conditional measurement scheme to force nonlinear evolution of a given state. In IPS the input state is mixed with the vacuum in a beam splitter and then the reflected beam is revealed by ON/OFF photodetection. When the detector clicks we have the (inconclusive) photon subtracted state. We show that IPS on both channels of an entangled twin-beam of radiation improves the fidelity of coherent state teleportation if the energy of the incoming twin-beam
more » ... below a certain threshold, which depends on the beam splitter transmissivity and the quantum efficiency of photodetectors. We show that the energy threshold diverges when the transmissivity and the efficiency approach unit and compare our results with that of previous works on conclusive photon subtraction.
doi:10.1103/physreva.67.032314 fatcat:iufzel3jcbgvdazfywuzzl2nda

Radiation to atom quantum mapping by collective recoil in a Bose–Einstein condensate

Matteo G.A. Paris, Mary Cola, Nicola Piovella, Rodolfo Bonifacio
2003 Optics Communications  
We propose an experiment to realize radiation to atom continuous variable quantum mapping, i.e. to teleport the quantum state of a single mode radiation field onto the collective state of atoms with a given momentum out of a Bose-Einstein condensate. The atoms-radiation entanglement needed for the teleportation protocol is established through the interaction of a single mode with the condensate in presence of a strong far off-resonant pump laser, whereas the coherent atomic displacement is
more » ... ned by the same interaction with the radiation in a classical coherent field. In principle, verification of the protocol requires a joint measurement on the recoiling atoms and the condensate, however, a partial verification involving populations, i.e. diagonal matrix elements may be obtained through counting atoms experiments.
doi:10.1016/j.optcom.2003.09.065 fatcat:s4gaq5s5cfa2njqcuadk7bppja

Remote state preparation and teleportation in phase space

Matteo G A Paris, Mary Cola, Rodolfo Bonifacio
2003 Journal of Optics B-Quantum and Semiclassical Optics  
Continuous variable remote state preparation and teleportation are analyzed using Wigner functions in phase space. We suggest a remote squeezed state preparation scheme between two parties sharing an entangled twin beam, where homodyne detection on one beam is used as a conditional source of squeezing for the other beam. The scheme works also with noisy measurements, and provide squeezing if the homodyne quantum efficiency is larger than 50%. Phase space approach is shown to provide a
more » ... framework to describe teleportation as a generalized conditional measurement, and to evaluate relevant degrading effects, such the finite amount of entanglement, the losses along the line, and the nonunit quantum efficiency at the sender location.
doi:10.1088/1464-4266/5/3/370 fatcat:t4eeavs5vbegbkykrp6jgtbpr4

The metal-poor end of the Spite plateau. II. Detailed chemical investigation

A. M. Matas Pinto, M. Spite, E. Caffau, P. Bonifacio, L. Sbordone, T. Sivarani, M. Steffen, F. Spite, P. Francois, P. Di Matteo
2021 Astronomy and Astrophysics  
Haywood et al. (2018) and Di Matteo et al. (2020) showed that the low-α and high-α stars of the Nissen & Schuster (2010) sample and the Gaia DR2-APOGEE sample (Di Matteo et al. 2019) occupy different  ...  positions in the diagrams of Fig. 9 (see in particular Fig. 5 in Di Matteo et al. 2020) .  ... 
doi:10.1051/0004-6361/202141288 fatcat:6w5vhvczwvenxa3yy4s34gessy
« Previous Showing results 1 — 15 out of 817 results