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I sistemi di Business Intelligence e il coordinamento organizzativo.
No full textIl coordinamento. I costi del coordinamento. Le tecnologie di coordinamento. La Business Intelligence. La ricerca.Il coordinamento. I costi del coordinamento. Le tecnologie di coordinamento. La Business Intelligence. La ricerca.LUISS PhD Thesi
Single-Firm Conduct: A Discipline in Search of Itself (Try with Google?)
No full textThe American way: some remarks. The Google case: a test in real-time. Yet another culture clash, or a simpler joint confusion? Exploitation v. exclusion: planning the match. Some conclusions (and a modest proposal).The American way: some remarks. The Google case: a test in real-time. Yet another culture clash, or a simpler joint confusion? Exploitation v. exclusion: planning the match. Some conclusions (and a modest proposal).Non-Refereed Working Papers / of national relevance onl
Modelling and Pricing communication networks services in Markets for Bandwidth
No full textThe subject of this thesis is pricing and modelling of communication network services in bandwidth markets, more precisely connections between two or more geographical locations, subject to a certain Quality of Service requirements. First, it is shown how network topology leads to additional arbitrage opportunities, like the so called network or geographical arbitrage, and how it influences hedging strategies. A solution to such a pricing problem is proposed on the simplest bandwidth topology, the triangle
network, both for pricing and hedging strategy based on a risk-minimization criteria. Such solution is then applied to various underlying price processes, from a Cox-Ross-Rubinstein type model to a more complex Geometric Brownian Motion (GBM). Future developments for price models including spikes as typical features of non-storable commodities are then discussed. Second, the foundations for a realistic extension of results found in triangle networks to a global telecommunication network are laid. In addition, estimates for the correlation function between traffic activities on distant routes are derived. More precisely, it is found an upper bound for the exponential decay rate of space and time two-point correlation functions. Lastly, the analysis moves to real data. The dynamics of different forward contract prices are linked with a price process dynamics for a forward contract with fixed maturity. Subsequently, a truncated increments variation technique is used to detect and remove spike prices from real data, in order to estimate parameter values for a GBM process. Then a simple model for the price process, consisting of a GBM with Poissonian spikes, is proposed and simulated in order to mimic the empirical data.The subject of this thesis is pricing and modelling of communication network services in bandwidth markets, more precisely connections between two or more geographical locations, subject to a certain Quality of Service requirements. First, it is shown how network topology leads to additional arbitrage opportunities, like the so called network or geographical arbitrage, and how it influences hedging strategies. A solution to such a pricing problem is proposed on the simplest bandwidth topology, the triangle
network, both for pricing and hedging strategy based on a risk-minimization criteria. Such solution is then applied to various underlying price processes, from a Cox-Ross-Rubinstein type model to a more complex Geometric Brownian Motion (GBM). Future developments for price models including spikes as typical features of non-storable commodities are then discussed. Second, the foundations for a realistic extension of results found in triangle networks to a global telecommunication network are laid. In addition, estimates for the correlation function between traffic activities on distant routes are derived. More precisely, it is found an upper bound for the exponential decay rate of space and time two-point correlation functions. Lastly, the analysis moves to real data. The dynamics of different forward contract prices are linked with a price process dynamics for a forward contract with fixed maturity. Subsequently, a truncated increments variation technique is used to detect and remove spike prices from real data, in order to estimate parameter values for a GBM process. Then a simple model for the price process, consisting of a GBM with Poissonian spikes, is proposed and simulated in order to mimic the empirical data.LUISS PhD Thesi
On recognition in the contemporary world
No full textThe Global Context. Delineating power. Understanding the values. Exploring the concept of recognition. Overview of the main theories of recognition and their implications for recognition in the contemporary world. A proposal of a rough model of recognition. Exploring the framework of cosmopolitanism within the sociological and psychological/social-philosophical perspective.The Global Context. Delineating power. Understanding the values. Exploring the concept of recognition. Overview of the main theories of recognition and their implications for recognition in the contemporary world. A proposal of a rough model of recognition. Exploring the framework of cosmopolitanism within the sociological and psychological/social-philosophical perspective.LUISS PhD Thesi
On Optimal Allocation of a Continuous Resource Using an Iterative Approach and Total Positivity
No full textWe study a class of optimal allocation problems, including the well-known Bomber Problem, with the following common probabilistic structure. An aircraft equipped with an amount x of ammunition is intercepted by enemy airplanes arriving according to a homogenous Poisson process over a fixed time duration t. Upon encountering an enemy, the aircraft has the choice of spending any amount 0 <= y <= x of its ammunition, resulting in the aircraft's survival with probability equal to some known increasing function of y. Two different goals have been considered in the literature concerning the optimal amount K(x,t) of ammunition spent: (i) Maximizing the probability of surviving for time t, which is the so-called Bomber Problem, and (ii) maximizing the number of enemy airplanes shot down during time t, which we call the Fighter Problem. Several authors have attempted to settle the following conjectures about the monotonicity of K(x,t): [A] K(x, t) is decreasing in t, [B] K(x,t) is increasing in x, and [C] the amount x - K(x,t) held back is increasing in x. [A] and [C] have been shown for the Bomber Problem with discrete ammunition, while [B] is still an open question. In this paper we consider both time and ammunition continuous, and for the Bomber Problem prove [A] and [C], while for the Fighter we prove [C] in general, and that [A] holds for one special case and [B] for another. These proofs involve showing that the optimal survival probability and optimal number shot down are totally positive of order 2 (TP2) in the Bomber and Fighter Problems, respectively. The TP2 property is shown by constructing convergent sequences of approximating functions through an iterative operation which preserves TP2 and other properties.We study a class of optimal allocation problems, including the well-known Bomber Problem, with the following common probabilistic structure. An aircraft equipped with an amount x of ammunition is intercepted by enemy airplanes arriving according to a homogenous Poisson process over a fixed time duration t. Upon encountering an enemy, the aircraft has the choice of spending any amount 0 <= y <= x of its ammunition, resulting in the aircraft's survival with probability equal to some known increasing function of y. Two different goals have been considered in the literature concerning the optimal amount K(x,t) of ammunition spent: (i) Maximizing the probability of surviving for time t, which is the so-called Bomber Problem, and (ii) maximizing the number of enemy airplanes shot down during time t, which we call the Fighter Problem. Several authors have attempted to settle the following conjectures about the monotonicity of K(x,t): [A] K(x, t) is decreasing in t, [B] K(x,t) is increasing in x, and [C] the amount x - K(x,t) held back is increasing in x. [A] and [C] have been shown for the Bomber Problem with discrete ammunition, while [B] is still an open question. In this paper we consider both time and ammunition continuous, and for the Bomber Problem prove [A] and [C], while for the Fighter we prove [C] in general, and that [A] holds for one special case and [B] for another. These proofs involve showing that the optimal survival probability and optimal number shot down are totally positive of order 2 (TP2) in the Bomber and Fighter Problems, respectively. The TP2 property is shown by constructing convergent sequences of approximating functions through an iterative operation which preserves TP2 and other properties.Refereed Working Papers / of international relevanc
The Evaluation of IS Investment Returns: the RFI Case
No full textToday CIOs and IS departments in general are struggling to find a framework to evaluate the performance and the return of their IS investments. Notwithstanding a long-term research tradition on the topic of the business value impact of IS, so far the identification of the returns of the investments of IS is still an open issue. Even though a consistent body of literature has examined the problem over a time frame of more than 20 years, the IS business value research has produced so far a plethora of theoretical contributions but with few practical applicability opportunities. Starting from the assumption that real-world experiences differ from theoretical explications, and with the intent to contribute in the IS business value research field bringing evidences and witnesses from the reality, this paper presents a case of an IS performance management system used to assess the value delivered by IT implemented in RFI (Rete Ferroviaria Italiana), the company managing the Italian railroad infrastructure.Today CIOs and IS departments in general are struggling to find a framework to evaluate the performance and the return of their IS investments. Notwithstanding a long-term research tradition on the topic of the business value impact of IS, so far the identification of the returns of the investments of IS is still an open issue. Even though a consistent body of literature has examined the problem over a time frame of more than 20 years, the IS business value research has produced so far a plethora of theoretical contributions but with few practical applicability opportunities. Starting from the assumption that real-world experiences differ from theoretical explications, and with the intent to contribute in the IS business value research field bringing evidences and witnesses from the reality, this paper presents a case of an IS performance management system used to assess the value delivered by IT implemented in RFI (Rete Ferroviaria Italiana), the company managing the Italian railroad infrastructure.Uninvited Submission
A Business aware Information Security Risk Analysis Method
No full textSecuring the organization critical information assets from sophisticated insider threats and outsider attacks is essential to ensure business continuity and efficiency. The information security risk management (ISRM) is the process that identifies the threats and vulnerabilities of an enterprise information system, evaluates the likelihood of their occurrence and estimates their potential business impact. It is a continuous process that allows cost effectiveness of implemented security controls and provides a dynamic set of tools to monitor the security level of
the information system. However, the examination of existing practices of the enterprises reveals a poor effectiveness of information security management
processes such as stated in the information security breaches surveys. In particular, the enterprises experience difficulties in assessing and managing their security
risks, in implementing appropriate security controls, as well as in preventing security threats. The available ISRM models and frameworks mainly focus on the technical modules related to the development of security mitigation and prevention and do not pay much attention to the influence of business variables affecting the reliability of the provided solutions. This paper discusses the major business
related factors for risk analysis and shows their interference in the ISRM process. These factors include the enterprise strategic environment, the organizational
structure features, the customer relationship and the value chain configuration.Securing the organization critical information assets from sophisticated insider threats and outsider attacks is essential to ensure business continuity and efficiency. The information security risk management (ISRM) is the process that identifies the threats and vulnerabilities of an enterprise information system, evaluates the likelihood of their occurrence and estimates their potential business impact. It is a continuous process that allows cost effectiveness of implemented security controls and provides a dynamic set of tools to monitor the security level of
the information system. However, the examination of existing practices of the enterprises reveals a poor effectiveness of information security management
processes such as stated in the information security breaches surveys. In particular, the enterprises experience difficulties in assessing and managing their security
risks, in implementing appropriate security controls, as well as in preventing security threats. The available ISRM models and frameworks mainly focus on the technical modules related to the development of security mitigation and prevention and do not pay much attention to the influence of business variables affecting the reliability of the provided solutions. This paper discusses the major business
related factors for risk analysis and shows their interference in the ISRM process. These factors include the enterprise strategic environment, the organizational
structure features, the customer relationship and the value chain configuration.Monograph's chaptersEditorship
On Choosing a Constitution (at least the part relating to the distribution of income)
No full textA Constitution is a collection of principles or axioms determining how society should be organised, and a description of the ordering of the axioms in terms of their importance and of their invocation. We report on an experiment aimed at discovering preferred axioms relating to the distribution of income within society.A Constitution is a collection of principles or axioms determining how society should be organised, and a description of the ordering of the axioms in terms of their importance and of their invocation. We report on an experiment aimed at discovering preferred axioms relating to the distribution of income within society.Articles published in or submitted to a Journal with I
Il federalismo fiscale in Italia tra autonomia e convergenza europea.
No full textFederalismo fiscale e autonomia finanziaria. Teorie economiche del decentramento. Federalismo, decentramento e sussidiarietà nel contesto europeo. Il federalismo fiscale in Italia. L’attuazione del federalismo fiscale: la legge 5 maggio 2009, n. 42.Federalismo fiscale e autonomia finanziaria. Teorie economiche del decentramento. Federalismo, decentramento e sussidiarietà nel contesto europeo. Il federalismo fiscale in Italia. L’attuazione del federalismo fiscale: la legge 5 maggio 2009, n. 42.LUISS PhD Thesi
1. The Market for Subprime Lending: a Law and Economics Analysis of Market Failures and Policy Responses. 2. Legal and economic approach to tying and other potentially unfair and anticompetitive commercial practices: focus on financial services. 3. Shaping Reforms and Business Models for OTC Derivatives Markets: Quo Vadis?
No full text1. The supreme mortgages market. Main determinants of the borrower's choice to get in a subprime mortgage. The incentive structure of intermediaries: moral hazard and adverse selection. Some responses: how does the policy-maker shape the subprime market.
2. The competition policy dimension of tying and other potentially unfair commercial practices. Tackling tying and other potentially unfair commercial practices in consumer policy. Measuring the impact of tying and other potentially unfair practices in the retail financial services sector: a multi-stage test.
3. Setting the scene. Size and shape of the OTC derivatives market. Legal and economic views of growth and concentration. The nature of OTC derivatives transactions. Shedding lights on the OTC derivatives’ chain value: a costbenefit analysis. OTC derivatives markets and the financial crisis. Legislative actions in EU and US. Perspectives for over-the-counter derivatives market: four
scenarios.1. The supreme mortgages market. Main determinants of the borrower's choice to get in a subprime mortgage. The incentive structure of intermediaries: moral hazard and adverse selection. Some responses: how does the policy-maker shape the subprime market.
2. The competition policy dimension of tying and other potentially unfair commercial practices. Tackling tying and other potentially unfair commercial practices in consumer policy. Measuring the impact of tying and other potentially unfair practices in the retail financial services sector: a multi-stage test.
3. Setting the scene. Size and shape of the OTC derivatives market. Legal and economic views of growth and concentration. The nature of OTC derivatives transactions. Shedding lights on the OTC derivatives’ chain value: a costbenefit analysis. OTC derivatives markets and the financial crisis. Legislative actions in EU and US. Perspectives for over-the-counter derivatives market: four
scenarios.LUISS PhD Thesi