Antropología, violencia y justicia. Repensando matrices de sociabilidad contemporánea en el campo del género y de la familia. En: Avá, nº 18

¿Cómo abordar conceptualmente a la violencia y la justicia en un entramado de relaciones sociales tan complejo como el género y la familia? Esta pregunta recorre el libro compilado por Theophilos Rifiotis y Natalia Castelnuevo. La complejidad de la pregunta se acrecienta al sumar el carácter comparativo a la compilación, ya que la obra pone en diálogo investigaciones de Argentina, Brasil, Colombia y, hasta, Timor Oriental. Una introducción y nueve artículos ordenan este atrayente y estimulante ejercicio comparativo

Overlapping guaranteed cost control for uncertain continuous-time delayed systems

Overlapping guaranteed cost control design problem is solved for a class of linear continuous-time uncertain systems with state as well as control delays. Unknown arbitrarily time-varying uncertainties with known bounds are considered. A point delay is supposed. Conditions preserving closed-loop systems expansion-contraction relations including the identical bounds of performance indices are proved. A linear matrix inequality (LMI) delay independent procedure is used for control design in the expanded space. The results are specialized on the overlapping decentralized control design. A numerical illustrative example is supplied.Peer ReviewedPostprint (published version

Controllability-observability of expanded composite systems

The relation between original and expanded systems within the Inclusion Principle from the point of view of controllability–observability of both subsystems and composite systems is studied. It is proved that complementary matrices always exist ensuring that the subsystems and the overall expanded system are simultaneously controllable–observable. Two practically important large classes of complementary matrices are identified to offer results computationally attractive. First, the existence of complementary matrices ensuring controllability–observability of decoupled subsystems is proved. Then, using this result, the same property is proved for the composite expanded system.Peer ReviewedPostprint (published version

A design procedure for overlapped guaranteed cost controllers

© 2008 the authors. This work has been accepted to IFAC for publication under a Creative Commons Licence CC-BY-NC-NDIn this paper a quadratic guaranteed cost control problem for a class of linear continuous-time state-delay systems with norm-bounded uncertainties is considered. We will suppose that the systems are composed by two overlapped subsystems but the results can be easily extended to any number of subsystems. The main objective is to design overlapping guaranteed cost controllers with tridiagonal gain matrices for these kind of systems by using a linear matrix inequality (LMI) approach. With this idea in mind, we present a design strategy to reduce the computational burden and to increase the feasibility in the LMI problem. In this context, the use of so-called complementary matrices play an important role. A simple example to illustrate the advantages achieved by using the proposed method is supplied.Peer ReviewedPostprint (published version

La diversidad (in)visible. Identidad(es) entre policías bonaerenses

En este artículo analizamos cómo se construye el “nosotros” policial, entendiendo que el mismo no responde a una construcción estable y perenne propia de una esencia ontológica invariable del “ser policial”; sino que, por el contrario, es el resultado voluble y mutante de las múltiples relaciones sociales. Para dar cuenta de esta construcción estudiaremos algunos clivajes internos de la institución policial, exhibiendo la diversidad de vínculos sociales existentes en el interior de una grupalidad que se presenta como homogénea. La imagen del “verdadero policía”, idealización del hacer policial y su representación, nos permitirá rastrear la construcción de una distinción para con la sociedad, al mismo tiempo, que pondrá luz sobre la heterogeneidad opacada

A novel planning approach for the water, sanitation and hygiene (WaSH) sector: the use of object-oriented bayesian networks

Conventional approaches to design and plan water, sanitation, and hygiene (WaSH) interventions are not suitable for capturing the increasing complexity of the context in which these services are delivered. Multidimensional tools are needed to unravel the links between access to basic services and the socio-economic drivers of poverty. This paper applies an object-oriented Bayesian network to reflect the main issues that determine access to WaSH services. A national Program in Kenya has been analyzed as initial case study. The main findings suggest that the proposed approach is able to accommodate local conditions and to represent an accurate reflection of the complexities of WaSH issues, incorporating the uncertainty intrinsic to service delivery processes. Results indicate those areas in which policy makers should prioritize efforts and resources. Similarly, the study shows the effects of sector interventions, as well as the foreseen impact of various scenarios related to the national Program.Preprin

Decentralised reliable guaranteed cost control of uncertain systems: an LMI design

© 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The problem of designing a decentralised control scheme for a class of linear large scale interconnected systems with norm-bounded time-varying parameter uncertainties under a class of control failures is addressed. These failures are described by a model that considers possible outages or partial failures in every single actuator of each decentralised controller. The control design is performed through two steps. First, a decentralised reliable guaranteed cost control set is derived and, second, a feasible linear matrix inequalities procedure is presented for the effective construction of the control set. A numerical example illustrates the efficiency of the proposed control schemePeer ReviewedPostprint (published version

Horn axiomatizations for sequential data

AbstractWe propose a notion of deterministic association rules for ordered data. We prove that our proposed rules can be formally justified by a purely logical characterization, namely, a natural notion of empirical Horn approximation for ordered data which involves background Horn conditions; these ensure the consistency of the propositional theory obtained with the ordered context. The whole framework resorts to concept lattice models from Formal Concept Analysis, but adapted to ordered contexts. We also discuss a general method to mine these rules that can be easily incorporated into any algorithm for mining closed sequences, of which there are already some in the literature

Order regularity for Birkhoff interpolation with lacunary polynomials

In this short paper we present sufficient conditions for the order regularity problem in Birkhoff interpolation with lacunary polynomials. These conditions are a generalization of the Atkinson-Sharma theorem.Peer ReviewedPostprint (published version

“Un té de Pirelli”. Los sentidos de la violencia para la policía de la provincia de Buenos Aires

A través de un enfoque antropológico proponemos, en este trabajo, estudiar los significados que tienen las prácticas violentas para los policías de la provincia de Buenos Aires. El invariablemente enredado concepto de violencia tiene dos características que serán aquí el punto de partida para reflexionar sobre algunas prácticas violentas de las fuerzas policiales. El carácter relacional de la violencia, particularidad muchas veces olvidada al momento de estudiar los usos institucionales, es una de las dimensiones que proponemos retomar. Toda práctica violenta, incluida la policial, es una relación social que conecta, enlaza, a las partes según valores y sentidos. Estudiar estos valores y sentidos nos permite comprender los significados que tienen sus prácticas para los policías. Con este mismo objetivo analizaremos las formas en que los policías nutren de validez sus acciones para poder abordar la otra dimensión del concepto que nos atañe: la legitimidad.