Application of Raman diagnostics to combustion

The use of laser Raman diagnostic techniques to measure the specie concentrations and their temperatures in combustion flow fields is discussed. The system designed to measure the specie concentrations, which included a ruby laser and a photodiode to trip the laser at the maximum light and heat output of the combustion process, is described and problems encountered in developing the system are reported. Photographs of the combustion process are presented and analyzed detailing the evolution of the combustion in terms of the photodiode and the lack of a noticeable Raman-Stokes signal. The absence of the Raman-Stokes signal is discussed

Las ediciones del maoísmo argentino

Fil: Celentano, Adrián. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina

Questioni aperte in materia di prelievi biologici coattivi e conservazione di dati genetici nella banca dati nazionale del DNA

L'elaborato si propone di svolgere un'analisi critica della disciplina dei prelievi coattivi nel nostro ordinamento iniziando dall'esame delle prime sentenze costituzionali che hanno statuito sul tema, proseguendo con il primo intervento legislativo in materia avvenuto con la legge n. 155 del 2005 che non ne ha però introdotto un'organica regolamentazione, fino alla più recente disciplina statuita dalla legge n. 85 del 2009 con cui si è compiutamente regolamentata, in via generale, l'ipotesi dei prelievi coattivi, sia in fase di indagini preliminari che in fase dibattimentale, attraverso l'introduzione degli artt. 224 bis e 359 bis c.p.p., colmando una lacuna che si era protratta nel nostro ordinamento fin dalla sentenza costituzionale n. 238 del 1996 che aveva dichiarato l'illegittimità costituzionale dell'art. 224 comma 2 c.p.p. L'analisi termina con una valutazione critica, alla luce della giurisprudenza della Corte europea dei diritti dell'uomo, delle disposizioni introdotte con la legge del 2009 relative alla conservazione del materiale biologico e dei profili genetici da esso tipizzati confluenti rispettivamente nel laboratorio centrale e nella banca dati del DNA di prossima istituzione: problematiche ritornate ad essere attuali anche in virtù dell'approvazione, in via definitiva, del regolamento di attuazione della legge del 2009 avvenuta il 25 marzo 2016

Radicalization of book criticism and editing. With regard to the films “La hora de los hornos” (1968) and “Alianza para el progreso” (1971) in the magazines of the new left

Anclado en el cruce entre la historia intelectual y la historia del libro y la edición, el artículo analiza la radicalización política argentina de los setentas a través de la crítica al mundo del libro y la edición que formularon dos films de vanguardia, La hora de los hornos y Alianza para el progreso, y dos revistas de la nueva izquierda intelectual, Cristianismo y Revolución y Los Libros. Esos diversos objetos culturales no sólo representaron críticamente la relación de los intelectuales con los libros y la vinculación de los autores con el mercado, el público y la lectura, sino que además se ofrecieron como modelos de renovación de los lenguajes estéticos e instrumentos válidos para la transformación revolucionaria de la sociedad y la cultura.Enrolled in the intersection between intellectual history and the history of the book and the edition, the article analyzes the Argentine political radicalization of the seventies through the critique of the world of books and the edition formulated by two avant-garde films, La hora de los hornos and Alianza para el progreso, and two magazines of the new intellectual left, Cristianismo y Revolución and Los Libros. These diverse cultural objects not only critically represented the relationship of intellectuals to books and the linking of authors with the market, the public and reading, but also offered themselves as models for the renewal of aesthetic languages and instruments valid for Revolutionary transformation of society and culture

Practical stabilization for uncertain pseudo-linear and pseudo-quadratic MIMO systems

In this paper the problem of practical stabilization for a significant class of MIMO uncertain pseudo-linear and pseudo-quadratic systems, with additional bounded nonlinearities and/or bounded disturbances, is considered. By using the concept of majorant system, via Lyapunov approach, new fundamental theorems, from which derive explicit formulas to design state feedback control laws, with a possible imperfect compensation of nonlinearities and disturbances, are stated. These results guarantee a specified convergence velocity of the linearized system of the majorant system and a desired steady-state output for generic uncertainties and/or generic bounded nonlinearities and/or bounded disturbances

El maoísmo en las iniciativas político-editoriales del grupo pasadopresentista (1963-1976)

Fil: Celentano, Adrián. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina

Fiscal Impact Analysis: Applications and Usage in Ontario Municipalities

This paper examines the overall effectiveness of financial impact analysis (FIA) in local government based on a survey of 48 municipalities in Ontario with populations over 25,000. The findings reveal that despite the usefulness of FIA as an evaluative technique for municipal expenditures and revenues, it remains an unpopular tool for local government administrators in the province

New Robust Tracking and Stabilization Methods for Significant Classes of Uncertain Linear and Nonlinear Systems

Introduction There exist many mechanical, electrical, electro-mechanical, thermic, chemical, biological and medical linear and nonlinear systems, subject to parametric uncertainties and non standard disturbances, which need to be efficiently controlled. Indeed, e.g. consider the numerous manufacturing systems (in particular the robotic and transport systems,…) and the more pressing requirements and control specifications in an ever more dynamic society. Despite numerous scientific papers available in literature (Porter and Power, 1970)-(Sastry, 1999), some of which also very recent (Paarmann, 2001)-(Siciliano and Khatib, 2009), the following practical limitations remain: 1. the considered classes of systems are often with little relevant interest to engineers; 2. the considered signals (references, disturbances,…) are almost always standard (polynomial and/or sinusoidal ones); 3. the controllers are not very robust and they do not allow satisfying more than a single specification; 4. the control signals are often excessive and/or unfeasible because of the chattering. By taking into account that a very important problem is to force a process or a plant to track generic references, provided that sufficiently regular, e.g. the generally continuous piecewise linear signals, easily produced by using digital technologies, new theoretical results are needful for the scientific and engineering community in order to design control systems with non standard references and/or disturbances and/or with ever harder specifications. In the first part of this chapter, new results are stated and presented; they allow to design a controller of a SISO process, without zeros, with measurable state and with parametric uncertainties, such that the controlled system is of type one and has, for all the possible uncertain parameters, assigned minimum constant gain and maximum time constant or such that the controlled system tracks with a prefixed maximum error a generic reference with limited derivative, also when there is a generic disturbance with limited derivative, has an assigned maximum time constant and guarantees a good quality of the transient. The proposed design techniques use a feedback control scheme with an integral action (Seraj and Tarokh, 1977), (Freeman and Kokotovic, 1995) and they are based on the choice of a suitable set of reference poles, on a proportionality parameter of these poles and on the theory of externally positive systems (Bru and Romero-Vivò, 2009). The utility and efficiency of the proposed methods are illustrated with an attractive and significant example of position control. In the second part of the chapter it is considered a significant class of uncertain pseudo-quadratic systems subject to additional nonlinearities and/or external signals. For this class of systems, including articulated mechanical systems, several theorems are stated which easily allow to determine robust control laws of the PD type, with a possible partial compensation, in order to force the output and its derivative to go to rectangular neighbourhoods (of the origin) with prefixed areas and with prefixed time constants characterizing the convergence of the error. Clearly these results allow also designing control laws to take and hold a generic articulated system in a generic posture less than prefixed errors also in the presence of parametric uncertainties and limited disturbances. Moreover the stated theorems can be used to determine simple and robust control laws in order to force the considered class of systems to track a generic preassigned limited in “acceleration” trajectory, with preassigned majorant values of the maximum “position and/or velocity” errors and preassigned increases of the time constants characterizing the convergence of the error