Davide Radi
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View article: B-145 General Linear Model Statistical Techniques for Evaluating the reliability of Performance Between Two Instruments after Major Maintenance. A Practical Example with hs-cTnT Gen5 Performed with two Cobas e601
B-145 General Linear Model Statistical Techniques for Evaluating the reliability of Performance Between Two Instruments after Major Maintenance. A Practical Example with hs-cTnT Gen5 Performed with two Cobas e601 Open
Background. CLIA’s regulations require verification of calibration and linearity when an instrument receives major maintenance or has critical parts replaced. If the instrument is the sole operating analyzer, univariate statistics are suff…
View article: Abundance of weird quasiperiodic attractors in piecewise linear discontinuous maps
Abundance of weird quasiperiodic attractors in piecewise linear discontinuous maps Open
In this work, we consider a class of $n$-dimensional, $n\geq2$, piecewise linear discontinuous maps that can exhibit a new type of attractor, called a weird quasiperiodic attractor. While the dynamics associated with these attractors may a…
View article: Dynamics of 1D discontinuous maps with multiple partitions and linear functions having the same fixed point. An application to financial market modeling
Dynamics of 1D discontinuous maps with multiple partitions and linear functions having the same fixed point. An application to financial market modeling Open
Piecewise smooth systems are intensively studied today in many application areas, such as economics, finance, engineering, biology, and ecology. In this work, we consider a class of one-dimensional piecewise linear discontinuous maps with …
View article: On the emergence and properties of weird quasiperiodic attractors
On the emergence and properties of weird quasiperiodic attractors Open
We recently described a specific type of attractors of two-dimensional discontinuous piecewise linear maps, characterized by two discontinuity lines dividing the phase plane into three partitions, related to economic applications. To our k…
View article: On the limits of informationally efficient stock markets: New insights from a chartist-fundamentalist model
On the limits of informationally efficient stock markets: New insights from a chartist-fundamentalist model Open
We utilize a chartist-fundamentalist model to examine the limits of informationally efficient stock markets. In our model, chartists are permanently active in the stock market, while fundamentalists trade only when their mispricing-depende…
View article: The green transition of firms: The role of evolutionary competition, adjustment costs, transition risk, and green technology progress
The green transition of firms: The role of evolutionary competition, adjustment costs, transition risk, and green technology progress Open
We propose an evolutionary competition model to investigate the green transition of firms, highlighting the role of adjustment costs, dynamically adjusted transition risk, and green technology progress in this process. Firms base their dec…
View article: On boom-bust stock market dynamics, animal spirits, and the destabilizing nature of temporarily attracting virtual fixed points
On boom-bust stock market dynamics, animal spirits, and the destabilizing nature of temporarily attracting virtual fixed points Open
We propose a stock market model with chartists, fundamentalists and market makers. Chartists chase stock price trends, fundamentalists bet on mean reversion, and market makers adjust stock prices to reflect current excess demand. Fundament…
View article: Bifurcation structures of a two-dimensional piecewise linear discontinuous map: analysis of a cobweb model with regime-switching expectations
Bifurcation structures of a two-dimensional piecewise linear discontinuous map: analysis of a cobweb model with regime-switching expectations Open
We consider the bifurcations occurring in a two-dimensional piecewise-linear discontinuous map that describes the dynamics of a cobweb model in which firms rely on a regime-switching expectation rule. In three different partitions of the p…
View article: Bifurcation structures of a two-dimensional piecewise linear discontinuous map: analysis of a cobweb model with regime-switching expectations
Bifurcation structures of a two-dimensional piecewise linear discontinuous map: analysis of a cobweb model with regime-switching expectations Open
We consider the bifurcations occurring in a two-dimensional piecewise-linear discontinuous map that describes the dynamics of a cobweb model in which firms rely on a regime-switching expectation rule. In three different partitions of the p…
View article: Insights on the Theory of Robust Games
Insights on the Theory of Robust Games Open
A robust game is a distribution-free model to handle ambiguity generated by a bounded set of possible realizations of the values of players’ payoff functions. The players are worst-case optimizers and a solution, called robust-optimization…
View article: Ambiguity aversion as a route to randomness in a duopoly game
Ambiguity aversion as a route to randomness in a duopoly game Open
The global dynamics is investigated for a duopoly game where the perfect foresight hypothesis is relaxed and firms are worst-case maximizers. Overlooking the degree of product substitutability as well as the sensitivity of price to quantit…
View article: A robust route to randomness in a simple Cournot duopoly game where ambiguity aversion meets constant expectations
A robust route to randomness in a simple Cournot duopoly game where ambiguity aversion meets constant expectations Open
In this paper we investigate the dynamics of a duopoly game with ambiguity aversion regarding uncertainty in demand and constant expectations concerning competitor production. The focus is on an asymmetric Cournot game where players engage…
View article: A 2D piecewise-linear discontinuous map arising in stock market modeling: Two overlapping period-adding bifurcation structures
A 2D piecewise-linear discontinuous map arising in stock market modeling: Two overlapping period-adding bifurcation structures Open
We consider a 2D piecewise-linear discontinuous map defined on three partitions that drives the dynamics
\nof a stock market model. This model is a modification of our previous model associated with a map defined
\non two partitions. In th…
View article: Pricing Transition Risk with a Jump-Diffusion Credit Risk Model: Evidences from the CDS market
Pricing Transition Risk with a Jump-Diffusion Credit Risk Model: Evidences from the CDS market Open
Transition risk can be defined as the business-risk related to the enactment of green policies, aimed at driving the society towards a sustainable and low-carbon economy. In particular, the value of certain firms' assets can be lower becau…
View article: Hybrid dynamics of multi-species resource exploitation
Hybrid dynamics of multi-species resource exploitation Open
In this paper, we analyze a bio-economic model of exploitation of renewable commercial resources. To take into account the typically continuous-time modeling of biological species and, instead, of the specialized harvesting activities, whi…
View article: On the Numerical Solution of Ordinary, Interval and Fuzzy Differential Equations by Use of F-Transform
On the Numerical Solution of Ordinary, Interval and Fuzzy Differential Equations by Use of F-Transform Open
An interesting property of the inverse F-transform f ^ of a continuous function f on a given interval [ a , b ] says that the integrals of f ^ and f on [ a , b ] coincide. Furthermore, the same property can be established for the restricti…
View article: Insights on the Theory of Robust Games
Insights on the Theory of Robust Games Open
A robust game is a distribution-free model to handle ambiguity generated by a bounded set of possible realizations of the values of players' payoff functions. The players are worst-case optimizers and a solution, called robust-optimization…