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Search Results: 1 - 10 of 144867 matches for " F. Carbone "
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Systems security management in forestry work
Carbone F
Forest@ , 2011, DOI: 10.3832/efor0670-008
Abstract: Safety and health at work is a relevant ethical good. National Government and other international and national institutions have adopted measures to against this social evil, in the forestry sector too. In Italy, for the period 2003-2005 the domestic forest sector registered just less than 1 fatal accident for millions of cubic meter, nevertheless a more consistent data should be need for comparing this data at international level. After explaining the wide range of works in the forest, the contribution analyzes the discipline introduced by Legislative Decree no. 81/2008. This has introduced new professionalism, new procedures, new tools and new type of cost in the budgets of forestry activities. In the conclusion the Author suggests that the inclusion of these type of expenditures on forest management accounting are very significant from many points of view. Safety and health costs must be included sistematically and not occasionally on volontary basis of the forester consultant.
The management system of silvicultural practices
Carbone F
Forest@ , 2012, DOI: 10.3832/efor0685-009
Abstract: The coexistence of public and private interests on forest ecosystems makes the silvicultural interventions the most thorny moment of their management. In this paper the author analyzes the characteristics of forest firms and logging companies usually involved in forest management. The relations between their legitimate interests, expectations and strategies, the ways by which forest firm may entrust the execution of the silvicultural intervention, etc. are aspects strongly connected with the public interests, which is protected by forestry institutions. Silvicultural system of management interventions is the context where public interests are coordinated with the private interests. The output are qualitative and quantitative standards for the use of forest resources. Moving on from this preliminary to the executive phase, the case study has highlighted the crucial role played by foresters, who have to guarantee the coexistence of public and private interests on forests.
Il problema della individuazione ed implementazione all'uso multiplo della Riserva Naturale di Ripopolamento Animale dell'ex Salina di Tarquinia (VT) e valutazione economica del danno del degrado
F. Carbone
Aestimum , 2000,
Abstract:
Critical issues and challenges in the post-2012 perspective for the possible participation of the forestry sector market for carbon credits
Alisciani F,Carbone F,Perugini L
Forest@ , 2011, DOI: 10.3832/efor0672-008
Abstract: The first commitment period of the Kyoto Protocol (KP) is in its conclusive phase and with it the chances for forest farms in having an active role in the carbon market too. All carbon credits coming from Land Use, Land Use Change and Forestry activities will be used free of charge by the Italian Government in order to meet the national emission reduction target established under the Kyoto Protocol. In particular, the emitting sectors excluded from the European Union Emission Trading Scheme will benefit from forest carbon credits to offset part of their emissions, while for forest owners there is not any recognition for the provided service. In order to avoid the replication of this situation in the post-2012, it is necessary that the institution and the forest stakeholders, create the conditions for forest farms to participate and obtain the benefits introduced with the establishment of the Emission Trading, within the framework of post-2012 agreement. This condition could be achieved through the institution of a national carbon market. In this perspective this paper examines the main critical issues that could affect the participation of forest farms in the market.
The educational and awareness purposes of the Paideia approach for heritage management
F. Carbone,L. Oosterbeek,C. Costa
Natural Hazards and Earth System Sciences (NHESS) & Discussions (NHESSD) , 2012, DOI: 10.5194/nhess-12-1983-2012
Abstract: The need to raise awareness among the communities about the challenge of resource use – and, more generally, about the principles of sustainability – is the reason why the United Nations General Assembly proclaimed, in December 2002, the United Nations Decade of Education for Sustainable Development, 2005–2014 (DESD). For operators and managers of cultural and natural heritage, it represents a profound challenge to their ability to transmit the content of scientific knowledge to the general public in order to empower everyone on the preservation of cultural and natural resources, and to raise awareness about the potential that mankind has at its disposal. In this context, the application of the PAIDEIA APPROACH for the management of cultural heritage is the key to the recovery of socio-economic values intrinsic to these resources. This approach to management is based on the enhancement of cultural (namely archaeological) and natural heritage for social benefit and it involves the tourist trade as a vehicle of knowledge transmission, intercultural dialogue and socio-economic sustainable development.
Intraband Optical Spectral Weight in the presence of a van Hove singularity: application to Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$
F. Marsiglio,F. Carbone,A. Kuzmenko,D. van der Marel
Physics , 2006, DOI: 10.1103/PhysRevB.74.174516
Abstract: The Kubo single band sum rule is used to determine the optical spectral weight of a tight binding band with further than nearest neighbour hopping. We find for a wide range of parameters and doping concentrations that the change due to superconductivity at low temperature can be either negative or positive. In contrast, the kinetic energy change is always negative. We use an ARPES determined tight binding parametrization of Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ to investigate whether this can account for recent observations of a positive change in the spectral weight due to the onset of superconductivity. With this band structure we find that in the relevant doping regime a straightforward BCS calculation of the optical spectral weight cannot account for the experimental observations.
Real-Time Observation of Cuprates Structural Dynamics by Ultrafast Electron Crystallography
F. Carbone,N. Gedik,J. Lorenzana,A. H. Zewail
Advances in Condensed Matter Physics , 2010, DOI: 10.1155/2010/958618
Abstract: The phonon-mediated attractive interaction between carriers leads to the Cooper pair formation in conventional superconductors. Despite decades of research, the glue holding Cooper pairs in high-temperature superconducting cuprates is still controversial, and the same is true for the relative involvement of structural and electronic degrees of freedom. Ultrafast electron crystallography (UEC) offers, through observation of spatiotemporally resolved diffraction, the means for determining structural dynamics and the possible role of electron-lattice interaction. A polarized femtosecond (fs) laser pulse excites the charge carriers, which relax through electron-electron and electron-phonon couplings, and the consequential structural distortion is followed diffracting fs electron pulses. In this paper, the recent findings obtained on cuprates are summarized. In particular, we discuss the strength and symmetry of the directional electron-phonon coupling in (BSCCO), as well as the c-axis structural instability induced by near-infrared pulses in (LCO). The theoretical implications of these results are discussed with focus on the possibility of charge stripes being significant in accounting for the polarization anisotropy of BSCCO, and cohesion energy (Madelung) calculations being descriptive of the c-axis instability in LCO. 1. Introduction Despite two decades of intense research, the mechanism of high temperature superconductivity in cuprates is still unclear [1]. Besides their high temperature superconductivity, cuprates display a rich, yet poorly understood phase diagram covering electronic and structural phase transitions as a function of temperature, chemical doping, and magnetic field strength [2]. The unique behavior seen in these materials is a result of the delicate interplay between charge, spin, and lattice excitations. As a result of these couplings between different degrees of freedom, there usually exist several competing states, which give rise to multiple phases [3]. Understanding the dynamics between different electronic and structural phases of these materials is significant for an eventual understanding of superconductivity. Several experimental techniques have been applied to the study of these materials. Information on structural dynamics has been obtained through Raman spectroscopy [4], X-ray absorption spectroscopy (XAS) [5], Angle resolved photoemission spectroscopy (ARPES) [6–8], and oxygen isotope substitution studies [9–12]. In parallel, the effect of strong electron-electron interactions has been revealed by optical spectroscopy [13,
Statistical downscaling of climate data to estimate streamflow in a semi-arid catchment
S. Samadi,G. J. Carbone,M. Mahdavi,F. Sharifi
Hydrology and Earth System Sciences Discussions , 2012, DOI: 10.5194/hessd-9-4869-2012
Abstract: Linear and non-linear statistical 'downscaling' study is done to relate large-scale climate information from a general circulation model (GCM) to local-scale river flows in west Iran. This study aims to investigate and evaluate the more promising downscaling techniques, and provides a through inter comparison study using the Karkheh catchment as an experimental site in a semi arid region for the years of 2040 to 2069. A hybrid conceptual hydrological model was used in conjunction with modeled outcomes from a General Circulation Model (GCM), HadCM3, along with two downscaling techniques, Statistical Downscaling Model (SDSM) and Artificial Neural Network (ANN), to determine how future streamflow may change in a semi arid catchment. The results show that the choice of a downscaling algorithm having a significant impact on the streamflow estimations for a semi-arid catchment, which are mainly, influenced, respectively, by atmospheric precipitation and temperature projections. According to the SDSM and ANN projections, daily temperature will increase up to +0.58° (+3.90%) and +0.48° (+3.48%) and daily precipitation will decrease up to 0.1mm ( 2.56%) and 0.4 mm ( 2.82%) respectively. Moreover streamflow changes corresponding to downscaled future projections presented a reduction in mean annual flow of 3.7 m3 s 1 and 9.47 m3 s 1 using SDSM and ANN outputs respectively. The results suggest a significant decrease of streamflow in both downscaling projections, particularly in winter. The discussion considers the performance of each statistical method for downscaling future flow at catchment scale as well as the relationship between atmospheric processes and flow variability and changes.
Intermittency in MHD turbulence and coronal nanoflares modelling
P. Veltri,G. Nigro,F. Malara,V. Carbone
Nonlinear Processes in Geophysics (NPG) , 2005,
Abstract: High resolution numerical simulations, solar wind data analysis, and measurements at the edges of laboratory plasma devices have allowed for a huge progress in our understanding of MHD turbulence. The high resolution of solar wind measurements has allowed to characterize the intermittency observed at small scales. We are now able to set up a consistent and convincing view of the main properties of MHD turbulence, which in turn constitutes an extremely efficient tool in understanding the behaviour of turbulent plasmas, like those in solar corona, where in situ observations are not available. Using this knowledge a model to describe injection, due to foot-point motions, storage and dissipation of MHD turbulence in coronal loops, is built where we assume strong longitudinal magnetic field, low beta and high aspect ratio, which allows us to use the set of reduced MHD equations (RMHD). The model is based on a shell technique in the wave vector space orthogonal to the strong magnetic field, while the dependence on the longitudinal coordinate is preserved. Numerical simulations show that injected energy is efficiently stored in the loop where a significant level of magnetic and velocity fluctuations is obtained. Nonlinear interactions give rise to an energy cascade towards smaller scales where energy is dissipated in an intermittent fashion. Due to the strong longitudinal magnetic field, dissipative structures propagate along the loop, with the typical speed of the Alfvén waves. The statistical analysis on the intermittent dissipative events compares well with all observed properties of nanoflare emission statistics. Moreover the recent observations of non thermal velocity measurements during flare occurrence are well described by the numerical results of the simulation model. All these results naturally emerge from the model dynamical evolution without any need of an ad-hoc hypothesis.
Real time observation of cuprates structural dynamics by Ultrafast Electron Crystallography
F. Carbone,N. Gedik,J. Lorenzana,A. H. Zewail
Physics , 2010, DOI: 10.1155/2010/958618.
Abstract: The phonon-mediated attractive interaction between carriers leads to the Cooper pair formation in conventional superconductors. Despite decades of research, the glue holding Cooper pairs in high-temperature superconducting cuprates is still controversial, and the same is true as for the relative involvement of structural and electronic degrees of freedom. Ultrafast electron crystallography (UEC) offers, through observation of spatio-temporally resolved diffraction, the means for determining structural dynamics and the possible role of electron-lattice interaction. A polarized femtosecond (fs) laser pulse excites the charge carriers, which relax through electron-electron and electron-phonon coupling, and the consequential structural distortion is followed diffracting fs electron pulses. In this review, the recent findings obtained on cuprates are summarized. In particular, we discuss the strength and symmetry of the directional electron-phonon coupling in Bi2Sr2CaCu2O8+\delta (BSCCO), as well as the c-axis structural instability induced by near-infrared pulses in La2CuO4 (LCO). The theoretical implications of these results are discussed with focus on the possibility of charge stripes being significant in accounting for the polarization anisotropy of BSCCO, and cohesion energy (Madelung) calculations being descriptive of the c-axis instability in LCO.
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