We investigate a closed economy in which the production depends essentially on physical capital, ... more We investigate a closed economy in which the production depends essentially on physical capital, natural capital and labor. Contrary to the standard literature, we assume that the labor growth rate is non constant but variable over time. We show that the economy is sustainable in the long run if human activities have a net zero or positive effect on the environment. Moreover, for any given tax rate (or MPC, i.e. marginal propensity to consume), we derive the set of sustainable MPCs (or tax rates).
Abstract. In this paper, we study the equilibrium dynamics of an endogenous growth model with end... more Abstract. In this paper, we study the equilibrium dynamics of an endogenous growth model with endogenous fertility choice. In this setting, we show that there is a unique equilibrium which is globally determinated. The validity of the neo-Malthusian relation between fertility ...
... MASSIMILIANO FERRARA University Mediterranea of Reggio Calabria Via dei Bianchi, 2 - Palazzo ... more ... MASSIMILIANO FERRARA University Mediterranea of Reggio Calabria Via dei Bianchi, 2 - Palazzo Zani 89127 Reggio Calabria ITALY massimiliano.ferrara@unirc.it LUCA GUERRINI University of Bologna Via Filopanti 5 40126 Bologna ITALY guerrini@rimini.unibo.it ...
ABSTRACT We consider the standard AK Solow model with delay in production. In contrast to neoclas... more ABSTRACT We consider the standard AK Solow model with delay in production. In contrast to neoclassical growth models with delay, it is found that there are no cycles.
ABSTRACT The neoclassical model of Solow-Swan with power logistic technology and time delay is in... more ABSTRACT The neoclassical model of Solow-Swan with power logistic technology and time delay is investigated. In contrast to neoclassical growth models with delay, no limit cycle occurs.
Encoded particles are one of the most powerful approaches for multiplex high-throughput screening... more Encoded particles are one of the most powerful approaches for multiplex high-throughput screening. Surfaceenhanced Raman scattering (SERS) based codification can, in principle, avoid many of the intrinsic limitations due to conventional alternatives, as it decreases the reading time and particle size while allowing for almost unlimited codification. Unfortunately, methods for the synthetic preparation of these particles are tedious; often subjected to limited reproducibility (associated with large fluctuations in the size distributions of the polymers employed in the standard protocols); and to date, limited to a small amount of molecules. Herein, we report a universal, one-pot, inexpensive, and scalable synthetic protocol for the fabrication of SERS-encoded nanoparticles. This synthetic strategy is highly reproducible, independent of the chemical nature and size of the Raman code used (31 different codes were tested) and scalable in the liter range without affecting the final properties of the encoded structures. Furthermore, the SERS efficiency of the fabricated encoded nanoparticles is superior to that of the materials produced by conventional methods, while showing a remarkable reproducibility from batch to batch. This encoding strategy can easily be applied to nanoparticles of different materials and shapes.
ABSTRACT Tesis doctoral inédita. Universidad Autónoma de Madrid, Facultad de Ciencias, Departamen... more ABSTRACT Tesis doctoral inédita. Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Química Física Aplicada. Fecha de lectura: 19-06-08 Bibliografía
... 5 Detection of Persistent Organic Pollutants by Using SERS Sensors Based on Organically Funct... more ... 5 Detection of Persistent Organic Pollutants by Using SERS Sensors Based on Organically Functionalized Ag Nanoparticles Luca Guerrini, Patricio Leyton, Marcelo Campos-Vallette, Concepción Domingo, José V. Garcia-Ramos, and Santiago Sanchez-Cortes 5.1 Introduction ...
SERS is a thirty years old physical phenomenon that has become one of the most exciting analytica... more SERS is a thirty years old physical phenomenon that has become one of the most exciting analytical techniques with a wide range of applications in physics, chemistry and biology, and the corresponding applied sciences. This ultrasensitive analytical tool covers the complete scale of sensitive analysis and diagnostics down to the limit of single molecule detection (SMD). There are now thousands of SERS publications in a wide range of scientifi c journals (for instance, SERS papers can be found in all the journals published by the ACS). The applications are relevant to trace analysis, environmental monitoring, nanobioscience among many others. The fi eld is intrinsically connected with the optical properties of nanostructures and SERS techniques are also used for nanostructure characterization, since it can be discussed in terms of surface plasmon resonance of nanoparticles, nanoshells or voids, leading to nanophotonics, plasmonics and single-molecule detection. Therefore, nowadays, no attempt or claim can be made to review the fi eld exhaustively in its entirety nor to cover all applications. Some of the above invited speakers contributed to the present issue. The speakers and the audience were able to exchange their views and newly acquired results in lively and sometimes heated discussions. The poster session was also quite active and successful. A total of 49 posters were displayed during the symposium. The following presentations received the Poster Awards. H. K. Park et al. "Silver-Particle-Based Surface-Enhanced Raman Scattering Spectroscopy for Biomolecular Sensing and Recognition" M. Meyer et al. "Can the Orientation of Molecules be Measured with SERS?" A. Maio et al. "SERRS measurement and Structural Characterization of J-and H-Aggregates in Langmuir-Blodgett (LB) Films Containing Merocyanine Dye"
ABSTRACT The guest editors would like to express their gratitude to the reviewers for their serio... more ABSTRACT The guest editors would like to express their gratitude to the reviewers for their serious evaluation of the papers submitted in this special issue. Thanks also go to the authors for their interesting papers. Carlo Bianca acknowledges the support by the FIRB project RBID08PP3J (Metodi matematici e relativi strumenti per la modellizzazione e la simulazione della formazione di tumori, competizione con il sistema immunitario, e conseguenti suggerimenti terapeutici).
This paper reviews the relationship between lags and cycles into classical structures of growth m... more This paper reviews the relationship between lags and cycles into classical structures of growth models (see Solow-Swan and Ramsey models). Some remarks and perspectives of research are determined.
ABSTRACT Recently the thermostatted kinetic framework has been proposed as mathematical model for... more ABSTRACT Recently the thermostatted kinetic framework has been proposed as mathematical model for studying nonequilibrium complex systems constrained to keep constant the total energy. The time evolution of the distribution function of the system is described by a nonlinear partial integro-differential equation with quadratic type nonlinearity coupled with the Gaussian isokinetic thermostat. This paper is concerned with further developments of this thermostatted framework. Specifically the term related to the Gaussian thermostat is adjusted in order to ensure the conservation of even high-order moments of the distribution function. The derived framework that constitutes a new paradigm for the derivation of specific models in the applied sciences, is analytically investigated. The global in time existence and uniqueness of the solution to the relative Cauchy problem is proved. Existence and moments conservation of stationary solutions are also performed. Suitable applications and research perspectives are outlined in the last section of the paper.
Uzawa's two-sector growth model is extended into a three-sector model, where the labor growth rat... more Uzawa's two-sector growth model is extended into a three-sector model, where the labor growth rate is variable and bounded over time. The solution of this economic system is determined, as well as its long-run growth and asymptotic stability are investigated.
We investigate a closed economy in which the production depends essentially on physical capital, ... more We investigate a closed economy in which the production depends essentially on physical capital, natural capital and labor. Contrary to the standard literature, we assume that the labor growth rate is non constant but variable over time. We show that the economy is sustainable in the long run if human activities have a net zero or positive effect on the environment. Moreover, for any given tax rate (or MPC, i.e. marginal propensity to consume), we derive the set of sustainable MPCs (or tax rates).
Abstract. In this paper, we study the equilibrium dynamics of an endogenous growth model with end... more Abstract. In this paper, we study the equilibrium dynamics of an endogenous growth model with endogenous fertility choice. In this setting, we show that there is a unique equilibrium which is globally determinated. The validity of the neo-Malthusian relation between fertility ...
... MASSIMILIANO FERRARA University Mediterranea of Reggio Calabria Via dei Bianchi, 2 - Palazzo ... more ... MASSIMILIANO FERRARA University Mediterranea of Reggio Calabria Via dei Bianchi, 2 - Palazzo Zani 89127 Reggio Calabria ITALY massimiliano.ferrara@unirc.it LUCA GUERRINI University of Bologna Via Filopanti 5 40126 Bologna ITALY guerrini@rimini.unibo.it ...
ABSTRACT We consider the standard AK Solow model with delay in production. In contrast to neoclas... more ABSTRACT We consider the standard AK Solow model with delay in production. In contrast to neoclassical growth models with delay, it is found that there are no cycles.
ABSTRACT The neoclassical model of Solow-Swan with power logistic technology and time delay is in... more ABSTRACT The neoclassical model of Solow-Swan with power logistic technology and time delay is investigated. In contrast to neoclassical growth models with delay, no limit cycle occurs.
Encoded particles are one of the most powerful approaches for multiplex high-throughput screening... more Encoded particles are one of the most powerful approaches for multiplex high-throughput screening. Surfaceenhanced Raman scattering (SERS) based codification can, in principle, avoid many of the intrinsic limitations due to conventional alternatives, as it decreases the reading time and particle size while allowing for almost unlimited codification. Unfortunately, methods for the synthetic preparation of these particles are tedious; often subjected to limited reproducibility (associated with large fluctuations in the size distributions of the polymers employed in the standard protocols); and to date, limited to a small amount of molecules. Herein, we report a universal, one-pot, inexpensive, and scalable synthetic protocol for the fabrication of SERS-encoded nanoparticles. This synthetic strategy is highly reproducible, independent of the chemical nature and size of the Raman code used (31 different codes were tested) and scalable in the liter range without affecting the final properties of the encoded structures. Furthermore, the SERS efficiency of the fabricated encoded nanoparticles is superior to that of the materials produced by conventional methods, while showing a remarkable reproducibility from batch to batch. This encoding strategy can easily be applied to nanoparticles of different materials and shapes.
ABSTRACT Tesis doctoral inédita. Universidad Autónoma de Madrid, Facultad de Ciencias, Departamen... more ABSTRACT Tesis doctoral inédita. Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Química Física Aplicada. Fecha de lectura: 19-06-08 Bibliografía
... 5 Detection of Persistent Organic Pollutants by Using SERS Sensors Based on Organically Funct... more ... 5 Detection of Persistent Organic Pollutants by Using SERS Sensors Based on Organically Functionalized Ag Nanoparticles Luca Guerrini, Patricio Leyton, Marcelo Campos-Vallette, Concepción Domingo, José V. Garcia-Ramos, and Santiago Sanchez-Cortes 5.1 Introduction ...
SERS is a thirty years old physical phenomenon that has become one of the most exciting analytica... more SERS is a thirty years old physical phenomenon that has become one of the most exciting analytical techniques with a wide range of applications in physics, chemistry and biology, and the corresponding applied sciences. This ultrasensitive analytical tool covers the complete scale of sensitive analysis and diagnostics down to the limit of single molecule detection (SMD). There are now thousands of SERS publications in a wide range of scientifi c journals (for instance, SERS papers can be found in all the journals published by the ACS). The applications are relevant to trace analysis, environmental monitoring, nanobioscience among many others. The fi eld is intrinsically connected with the optical properties of nanostructures and SERS techniques are also used for nanostructure characterization, since it can be discussed in terms of surface plasmon resonance of nanoparticles, nanoshells or voids, leading to nanophotonics, plasmonics and single-molecule detection. Therefore, nowadays, no attempt or claim can be made to review the fi eld exhaustively in its entirety nor to cover all applications. Some of the above invited speakers contributed to the present issue. The speakers and the audience were able to exchange their views and newly acquired results in lively and sometimes heated discussions. The poster session was also quite active and successful. A total of 49 posters were displayed during the symposium. The following presentations received the Poster Awards. H. K. Park et al. "Silver-Particle-Based Surface-Enhanced Raman Scattering Spectroscopy for Biomolecular Sensing and Recognition" M. Meyer et al. "Can the Orientation of Molecules be Measured with SERS?" A. Maio et al. "SERRS measurement and Structural Characterization of J-and H-Aggregates in Langmuir-Blodgett (LB) Films Containing Merocyanine Dye"
ABSTRACT The guest editors would like to express their gratitude to the reviewers for their serio... more ABSTRACT The guest editors would like to express their gratitude to the reviewers for their serious evaluation of the papers submitted in this special issue. Thanks also go to the authors for their interesting papers. Carlo Bianca acknowledges the support by the FIRB project RBID08PP3J (Metodi matematici e relativi strumenti per la modellizzazione e la simulazione della formazione di tumori, competizione con il sistema immunitario, e conseguenti suggerimenti terapeutici).
This paper reviews the relationship between lags and cycles into classical structures of growth m... more This paper reviews the relationship between lags and cycles into classical structures of growth models (see Solow-Swan and Ramsey models). Some remarks and perspectives of research are determined.
ABSTRACT Recently the thermostatted kinetic framework has been proposed as mathematical model for... more ABSTRACT Recently the thermostatted kinetic framework has been proposed as mathematical model for studying nonequilibrium complex systems constrained to keep constant the total energy. The time evolution of the distribution function of the system is described by a nonlinear partial integro-differential equation with quadratic type nonlinearity coupled with the Gaussian isokinetic thermostat. This paper is concerned with further developments of this thermostatted framework. Specifically the term related to the Gaussian thermostat is adjusted in order to ensure the conservation of even high-order moments of the distribution function. The derived framework that constitutes a new paradigm for the derivation of specific models in the applied sciences, is analytically investigated. The global in time existence and uniqueness of the solution to the relative Cauchy problem is proved. Existence and moments conservation of stationary solutions are also performed. Suitable applications and research perspectives are outlined in the last section of the paper.
Uzawa's two-sector growth model is extended into a three-sector model, where the labor growth rat... more Uzawa's two-sector growth model is extended into a three-sector model, where the labor growth rate is variable and bounded over time. The solution of this economic system is determined, as well as its long-run growth and asymptotic stability are investigated.
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Papers by Luca Guerrini