Search results for "INEQUALITY"
showing 10 items of 1076 documents
Robust stabilisation of 2D state-delayed stochastic systems with randomly occurring uncertainties and nonlinearities
2013
This paper is concerned with the state feedback control problem for a class of two-dimensional (2D) discrete-time stochastic systems with time-delays, randomly occurring uncertainties and nonlinearities. Both the sector-like nonlinearities and the norm-bounded uncertainties enter into the system in random ways, and such randomly occurring uncertainties and nonlinearities obey certain mutually uncorrelated Bernoulli random binary distribution laws. Sufficient computationally tractable linear matrix inequality–based conditions are established for the 2D nonlinear stochastic time-delay systems to be asymptotically stable in the mean-square sense, and then the explicit expression of the desired…
L'uguale e il diverso. Come le diseguaglianza deprimono il capitale sociale
2017
Come si creano e come si distruggono lo spirito di cooperazione, la solidarietà, la lealtà, la reciprocità, la fiducia? Quali sono le condizioni che favoriscono (o deprimono) la formazione di capitale sociale? La risposta a questa domanda può illuminare numerosi fenomeni contemporanei quali la crescita della propensione alla chiusura e all’esclusione e il ritorno di manifestazioni discriminatorie, xenofobe e razziste. Anche le peggiori performance economiche del Mezzogiorno possono essere illuminate dalla risposta alla domanda su come si crea (e si distrugge) il capitale sociale.
Regional Income Inequality in Spain 1860–2015
2018
How has regional economic inequality evolved since 1860? Is there a relationship between initial per-capita income and regional growth rates? Is there any relation between the evolution of regional inequality and the economic development process in Spain? In order to answer these questions, a number of different indicators of inequality are offered in this chapter. Then the patterns of convergence or divergence followed by Spanish regions from the mid-nineteenth century to the present are studied. Regional income inequality rose in the early stages of economic development and then declined. However, with high levels of development, around the 1980s, a change of trend is observed. In other w…
Testing the Martingale Property of Exchange Rates: A Replication
2010
In this paper, we test the martingale property of a set of U.S. exchange rates already analyzed in a recent paper by Yilmaz [J. of Buss. and Ec. Stat., 2003]. We claim that the tests used by Yilmaz are not the most convenient to test the martingale hypothesis (or the equivalent martingale difference of the returns); hence, we compute a recently proposed test by Kuan and Lee [Stud. in Nonlin. Dyn. and Econ., 2004] and compare our results to Yilmaz's. Striking differences arise, which can give a clue about the type of data generating process governing the evolution of exchange rates in each sub-period.
On Fuzzy Stochastic Integral Equations—A Martingale Problem Approach
2011
In the paper we consider fuzzy stochastic integral equations using the methods of stochastic inclusions. The idea is to consider an associated martingale problem and its solutions in order to obtain a solution to the fuzzy stochastic equation.
Martingale Convergence Theorems and Their Applications
2020
We became familiar with martingales X=(X n ) n∈N0 as fair games and found that under certain transformations (optional stopping, discrete stochastic integral) martingales turn into martingales. In this chapter, we will see that under weak conditions (non-negativity or uniform integrability) martingales converge almost surely. Furthermore, the martingale structure implies L p -convergence under assumptions that are (formally) weaker than those of Chapter 7. The basic ideas of this chapter are Doob’s inequality (Theorem 11.4) and the upcrossing inequality (Lemma 11.3).
Regional inequalities and economic downturns
2011
The aim of this paper is to analyze the impact of economic downturns on regional inequalities. From a theoretical point of view regional inequalities may change in the aftermath of economic downturns if different regions have a different degree of resilience to a common shock or/and a different speed of adjustment. To test for this hypothesis we estimate the dynamic response of regional inequalities to economic downturns, controlling and interacting for country’s structural and policy variables associated to regional inequalities. The set of such variables includes, among others, the share of rural population, demographic changes, educational disparities, production diversification, the l…
On the metric properties of dynamic time warping
1987
Recently, some new and promising methods have been proposed to reduce the number of Dynamic Time Warping (DTW) computations in Isolated Word Recognition. For these methods to be properly applicable, the verification of the Triangle Inequality (TI) by the DTW-based Dissimilarity Measure utilized seems to be an important prerequisite.
Preserving entanglement and nonlocality in solid-state qubits by dynamical decoupling
2014
In this paper we study how to preserve entanglement and nonlocality under dephasing produced by classical noise with large low-frequency components, as $1/f$ noise, by Dynamical Decoupling techniques. We first show that quantifiers of entanglement and nonlocality satisfy a closed relation valid for two independent qubits locally coupled to a generic environment under pure dephasing and starting from a general class of initial states. This result allows to assess the efficiency of pulse-based dynamical decoupling for protecting nonlocal quantum correlations between two qubits subject to pure-dephasing local random telegraph and $1/f$-noise. We investigate the efficiency of an "entanglement m…
Under Our Eye: Margaret Atwood's Variation on the Panopticon in "The Heart Goes Last"
2020
In her dystopian dark comedy The Heart Goes Last (2015), Margaret Atwood openly refers to Jeremy Bentham’s concept of the Panopticon. The future world depicted in her novel is filled with violence and deprived of both human bonds and hope. Hence, being contained, monitored and — after Foucault — disciplined and punished appears to be the characters’ last resort. Surveillance tempts both sexes as it is politically correct and universal, and it does not privilege one group of people over the other. The article discusses the dystopian vision of the near future as created by Atwood in her 2015 novel, with direct references to the conception of the Panopticon, both in its original meaning propos…