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Littérature scientifique sur le sujet « Modelli ad agenti eterogenei »
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Articles de revues sur le sujet "Modelli ad agenti eterogenei"
Sonzogni, Barbara. « Modellizzazione e simulazione nelle scienze sociali. Questioni teoriche e operative nella costruzione di modelli ad agenti ». SOCIOLOGIA E RICERCA SOCIALE, no 94 (août 2011) : 32–78. http://dx.doi.org/10.3280/sr2011-094002.
Texte intégralButera, Federico, et Fernando Alberti. « Il governo delle reti inter-organizzative per la competitivitŕ ». STUDI ORGANIZZATIVI, no 1 (décembre 2012) : 77–111. http://dx.doi.org/10.3280/so2012-001004.
Texte intégralNicola, PierCarlo. « ECONOMIA MATEMATICA E MECCANICA RAZIONALE ». Istituto Lombardo - Accademia di Scienze e Lettere - Incontri di Studio, 18 novembre 2013, 57–72. http://dx.doi.org/10.4081/incontri.2008.49.
Texte intégralThèses sur le sujet "Modelli ad agenti eterogenei"
Mazzieri, Diego. « Progettazione e implementazione di agenti cognitivi per simulazioni di evacuazioni di folle in Alchemist ». Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19084/.
Texte intégralDI, NOIA JLENIA. « Potere di Mercato, Innovazione e Finanziarizzazione ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/108954.
Texte intégralThe present thesis deals with two main phenomena: financialization and digitalization. The first chapter aims at empirically investigating the determinants of corporations' Surplus Wealth (a measure of market power) and the impact of financial investments on capital investment decisions. Overall, additional evidence on shareholders' value orientation is provided; on average, realized financial profits seem to be beneficial to both physical and intangible capital investment, whilst current financial investments appear to generate a trade-off effect (not for monopolists operating in the IT sector). The second chapter develops a theoretical agent-based model combining endogenous growth (K+S model) and financial frictions (CATS model) together with a market for corporate bonds where firms can both issue and purchase bonds. IT intangible capital is assumed to be the channel through which innovation propagates and its specific advertising properties stemming from artificial intelligence are able to foster liquidity accumulation, which is boosted when financial investments begin to play a role. Simulations suggest that, from a macroeconomic perspective, companies' purchase of corporate bonds is not beneficial to employment, technological progress and growth, except for the case where liquidity invested in bonds is beyond a common threshold across firms but at the cost of higher bankruptcy risk and Ponzi positions.
Deluigi, Luca. « Implementazione e analisi del modello Flocking con FLAME GPU ». Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19064/.
Texte intégralKRACHKOVSKAYA, INNA. « The regulation of financial derivates : an agent-based model approach ». Doctoral thesis, Università degli Studi di Cagliari, 2015. http://hdl.handle.net/11584/266822.
Texte intégralTETTAMANZI, MICHELE. « EXPECTATIONS IN MACROECONOMICS : PERSPECTIVES, LABORATORY EXPERIMENTS AND AB MODELS ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2017. http://hdl.handle.net/10280/36156.
Texte intégralThe present dissertation analyses expectations in macroeconomics, contributing to the existing literature both studying the expectation formation process, and inquiring how economic dynamic is influenced by boundedly rational expectations. The first chapter presents a learn to forecast experiment in which subject are asked to form expectation regarding the future value of inflation: depending on the treatment, subjects might be exposed to a signal, which possibly aim at stabilizing economy, mimicking the non conventional monetary policy instrument called Delphic Forward Guidance. The collected data are studied trying to recover the underlying expectation formation process highlighting especially the role of credibility of the signal; moreover from the data emerges that informative Forward Guidance helps in stabilizing economy, drastically reducing the probability of deflationary spirals. The second chapter develops an agent-based model, encapsulating a boundedly rational expectation formation process, which had been extrapolated in previous experiments. Moreover benefiting from a specific aggregation procedure, we derive a model characterized by high analytical tractability, allowing hence to study the transmission mechanisms of a shock by insulating the effects due to the heterogeneity among agents and due to expectations: both the effects are sizable and help in understanding the dynamics of the economic system.
TETTAMANZI, MICHELE. « EXPECTATIONS IN MACROECONOMICS : PERSPECTIVES, LABORATORY EXPERIMENTS AND AB MODELS ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2017. http://hdl.handle.net/10280/36156.
Texte intégralThe present dissertation analyses expectations in macroeconomics, contributing to the existing literature both studying the expectation formation process, and inquiring how economic dynamic is influenced by boundedly rational expectations. The first chapter presents a learn to forecast experiment in which subject are asked to form expectation regarding the future value of inflation: depending on the treatment, subjects might be exposed to a signal, which possibly aim at stabilizing economy, mimicking the non conventional monetary policy instrument called Delphic Forward Guidance. The collected data are studied trying to recover the underlying expectation formation process highlighting especially the role of credibility of the signal; moreover from the data emerges that informative Forward Guidance helps in stabilizing economy, drastically reducing the probability of deflationary spirals. The second chapter develops an agent-based model, encapsulating a boundedly rational expectation formation process, which had been extrapolated in previous experiments. Moreover benefiting from a specific aggregation procedure, we derive a model characterized by high analytical tractability, allowing hence to study the transmission mechanisms of a shock by insulating the effects due to the heterogeneity among agents and due to expectations: both the effects are sizable and help in understanding the dynamics of the economic system.
ASSENZA, TIZIANA. « Saggi su fattori monetari e finanziari in economie creditizie ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2007. http://hdl.handle.net/10280/114.
Texte intégralThe dissertation could be traced back to the so called Financial Accelerator literature, that has been developed during the 90's. In particular it is essentially an attempt to adapt, modify or even subvert the basic framework proposed by Kiyotaki and Moore (KM,1997, 2002) and by Greenwald and Stiglitz (GS 1993, 2003) in order to provide answers to some questions that naturally arise from the study of these types of models. The thesis is divided into 7 chapters. Chapters 1 and 2 present and discuss the benchmark model, i.e. the framework put forward by KM, at the micro level (optimization problems of the different types of agents, market equilibrium) and at the macro level (laws of motion of macro state variables) respectively. In chapter 3 we study the conditions under which bankruptcy can occur and we explore the consequences of actual bankruptcies in terms of disruption of financial and goods markets. In chapter 4 we present and discuss a paper by Cordoba and Ripoll in which the role of money in a framework à la KM is introduced by means of the Cash In Advance (CIA) constraint approach. In chapter 5 we follow the Money In the Utility function (MIU) approach to introduce money in the original KM framework. The model seems very promising because is relatively simple, there can be multiple equilibria and the effect of a monetary injection can be explored in a straightforward way. In chapter 6 we model a KM economy in an OLG setting à la Diamond-Samuelson in which money plays basically the role of a store of value, which allows to increase consumption and bequest when old and bequest plays the role of internal resources for the young. The model presented in chapter 7 is an example of a microfounded macroeconomic model with financing constraints and heterogeneous agents of the Greenwald-Stiglitz type. An aggregation procedure is proposed in order to go from the individual to the aggregate variable. The model can be explored by means of simulations in an Agent-Based setting.
ASSENZA, TIZIANA. « Saggi su fattori monetari e finanziari in economie creditizie ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2007. http://hdl.handle.net/10280/114.
Texte intégralThe dissertation could be traced back to the so called Financial Accelerator literature, that has been developed during the 90's. In particular it is essentially an attempt to adapt, modify or even subvert the basic framework proposed by Kiyotaki and Moore (KM,1997, 2002) and by Greenwald and Stiglitz (GS 1993, 2003) in order to provide answers to some questions that naturally arise from the study of these types of models. The thesis is divided into 7 chapters. Chapters 1 and 2 present and discuss the benchmark model, i.e. the framework put forward by KM, at the micro level (optimization problems of the different types of agents, market equilibrium) and at the macro level (laws of motion of macro state variables) respectively. In chapter 3 we study the conditions under which bankruptcy can occur and we explore the consequences of actual bankruptcies in terms of disruption of financial and goods markets. In chapter 4 we present and discuss a paper by Cordoba and Ripoll in which the role of money in a framework à la KM is introduced by means of the Cash In Advance (CIA) constraint approach. In chapter 5 we follow the Money In the Utility function (MIU) approach to introduce money in the original KM framework. The model seems very promising because is relatively simple, there can be multiple equilibria and the effect of a monetary injection can be explored in a straightforward way. In chapter 6 we model a KM economy in an OLG setting à la Diamond-Samuelson in which money plays basically the role of a store of value, which allows to increase consumption and bequest when old and bequest plays the role of internal resources for the young. The model presented in chapter 7 is an example of a microfounded macroeconomic model with financing constraints and heterogeneous agents of the Greenwald-Stiglitz type. An aggregation procedure is proposed in order to go from the individual to the aggregate variable. The model can be explored by means of simulations in an Agent-Based setting.
MANZI, DEBORAH. « LA RESILIENZA DELLE RETI CRIMINALI : UN MODELLO AD AGENTI PER LA SIMULAZIONE DELLE REAZIONI DELLE ORGANIZZAZIONI ATTIVE NEL TRAFFICO E SPACCIO DI STUPEFACENTI ALLE AZIONI DI CONTRASTO DELLE FORZE DELL’ORDINE ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2023. http://hdl.handle.net/10280/138065.
Texte intégralCriminal organizations operate in complex changing environments. Being flexible and dynamic allows criminal networks not only to exploit new illicit opportunities but also to react to law enforcement attempts at disruption, enhancing the persistence of these networks over time. Most studies investigating network disruption have examined organizational structures before and after the arrests of some actors but have disregarded groups’ adaptation strategies. The present study investigated the resilience of drug trafficking organizations (DTOs) to law enforcement attempts at disruption, focusing on three main aspects: the ability to endure disruption, react quickly and efficiently to threats, and keep primary functions unaltered. The analysis relied on an agent-based model (ABM) that simulates drug trafficking and dealing activities by organized criminal groups and their reactions to law enforcement attempts at disruption. The simulation relied on information retrieved from a detailed court order against a large-scale Italian DTO and from the literature. The results demonstrated that law enforcement interventions are often critical events for DTOs, with high rates of disruption. However, surviving DTOs always displayed a high level of resilience, with effective strategies in place to react to threatening events and to continue drug trafficking and dealing.
PANTINI, SARA. « Analysis and modelling of leachate and gas generation at landfill sites focused on mechanically-biologically treated waste ». Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2013. http://hdl.handle.net/2108/203393.
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