Este volumen pretende hacer visible, a una audiencia especializada como no-especialista, diferent... more Este volumen pretende hacer visible, a una audiencia especializada como no-especialista, diferentes comprensiones y aplicaciones del término Smart City, proponiendo problemáticas, casos y conceptualizaciones que van más allá de una visión tecnologizada del urbanismos smart. Permite pluralizar y a la vez tomar distancia crítica de esta ola de Ciudades Inteligentes, mostrando las múltiples formas de inteligencia que adopta la vida urbana, que pueden ir desde la recomposición de espacios públicos hasta sofisticadas formas de gestión en transporte. Digámoslo de otra manera: aquellos productos diseñados y definidos por “sistemas expertos”, no tiene el monopolio de lo smart, y el prototipo espontáneo de una cancha de fútbol o de una barrera anti-ruido elaborada por un colectivo ciudadano puede ser tan inteligente o más que que un brazalete wearable. Lo importante es estar atento a esas pulsiones y gestos, sensores y desplazamientos urbanos En suma, la vocación de este libro es abrir el debate sobre las Smart Cities, explorando a partir de diferentes perspectivas y disciplinas (Antropología, Diseño, Ingeniería, Sociología, Arquitectura, Políticas Públicas...), la pregunta sobre qué implica una práctica urbana inteligente y sus efectos en la estructuración de la ciudad y sus discursos.
Eighth International Symposium on Laser Metrology, 2005
Forming Limit Diagrams (FLD"s) can be defined by the criteria of either diffuse ... more Forming Limit Diagrams (FLD"s) can be defined by the criteria of either diffuse or localized necks. We used Electronic Speckle Pattern Interferometry (ESPI) in commercial 1100 aluminum sheet metals annealed at 400°C to determine the strains at which both types of neck started in uniaxial tension (U) and in quasi plane strain tension (PS) tests. In biaxial (B) loading we
Experimental Analysis of Nano and Engineering Materials and Structures, 2007
... Guillaume Montay1, Bruno Guelorget1, Ignacio Lira2, Marie Tourneix1, Manuel François1 and Cri... more ... Guillaume Montay1, Bruno Guelorget1, Ignacio Lira2, Marie Tourneix1, Manuel François1 and Cristián Vial-Edwards2 1Université de Technologie de Troyes, Laboratoire des ... In it, an initially flat specimen is placed between a matrix and a blank holder, and hydraulic pressure is ...
In this paper, an original application of ESPI in materials engineering has been described. The t... more In this paper, an original application of ESPI in materials engineering has been described. The technique was used to analyze a bulge test in order to study strain localization by following the strain rate progress. Results show that ESPI allows detecting clearly the two stages of localization, namely, the diffuse and localized necks. Using this technique, forming limit diagrams can
A procedure is proposed to calculate the uncertainty of the energy content associated with real-t... more A procedure is proposed to calculate the uncertainty of the energy content associated with real-time flow measurements of natural gas. The procedure was applied to a measuring scheme consisting of an arrangement of orifice plate meters installed in parallel, coupled to an on-line gas chromatograph and a real-time data processing flow computer. Two distinct sources of natural gas with appreciable
A model is proposed for the calibration of a standard platinum resistance thermometer (SPRT) in a... more A model is proposed for the calibration of a standard platinum resistance thermometer (SPRT) in accordance with the BIPM recommended procedures to realize the International Temperature Scale of 1990 (ITS-90). The model is used to obtain the standard uncertainty of measurement associated with the temperature indicated by the thermometer. The difference between calibration uncertainty and user's uncertainty is established. Equations
... PII: S0957-0233(97)81582-2 The ESPI measurement of the residual stress distribution in chemic... more ... PII: S0957-0233(97)81582-2 The ESPI measurement of the residual stress distribution in chemically etched cold-rolled metallic sheets Ignacio H Lira, Cristián Vial and Kimberly Robinson Pontificia Universidad Católica de Chile, Escuela de Ingenierıa, Santiago 22, Chile ...
Two methods to measure the diffusion coefficient of a species in a liquid by optical interferomet... more Two methods to measure the diffusion coefficient of a species in a liquid by optical interferometry were compared. The methods were tested on a 1.75 M NaCl aqueous solution diffusing into water at 26 °C. Results were D = 1.587 × 10-9 m2 s-1 with the first method and D = 1.602 × 10-9 m2 s-1 with the second method.
We consider the task of Bayesian inference of the mean of normal observations when the available ... more We consider the task of Bayesian inference of the mean of normal observations when the available data have been discretized and when no prior knowledge about the mean and the variance exists. An application is presented which illustrates that the discretization of the data should not be ignored when their variability is of the order of the discretization step. We
Optical Trapping Dynamics in Interference Field. [AIP Conference Proceedings 992, 681 (2008)]. Lu... more Optical Trapping Dynamics in Interference Field. [AIP Conference Proceedings 992, 681 (2008)]. Luis Alfredo Viera, Ignacio Lira, Leopoldo Soto, Cristián Pavez. Abstract. A model that predicts a particle trapping time in an two beams interference laser fields is proposed. ...
Este volumen pretende hacer visible, a una audiencia especializada como no-especialista, diferent... more Este volumen pretende hacer visible, a una audiencia especializada como no-especialista, diferentes comprensiones y aplicaciones del término Smart City, proponiendo problemáticas, casos y conceptualizaciones que van más allá de una visión tecnologizada del urbanismos smart. Permite pluralizar y a la vez tomar distancia crítica de esta ola de Ciudades Inteligentes, mostrando las múltiples formas de inteligencia que adopta la vida urbana, que pueden ir desde la recomposición de espacios públicos hasta sofisticadas formas de gestión en transporte. Digámoslo de otra manera: aquellos productos diseñados y definidos por “sistemas expertos”, no tiene el monopolio de lo smart, y el prototipo espontáneo de una cancha de fútbol o de una barrera anti-ruido elaborada por un colectivo ciudadano puede ser tan inteligente o más que que un brazalete wearable. Lo importante es estar atento a esas pulsiones y gestos, sensores y desplazamientos urbanos En suma, la vocación de este libro es abrir el debate sobre las Smart Cities, explorando a partir de diferentes perspectivas y disciplinas (Antropología, Diseño, Ingeniería, Sociología, Arquitectura, Políticas Públicas...), la pregunta sobre qué implica una práctica urbana inteligente y sus efectos en la estructuración de la ciudad y sus discursos.
Eighth International Symposium on Laser Metrology, 2005
Forming Limit Diagrams (FLD"s) can be defined by the criteria of either diffuse ... more Forming Limit Diagrams (FLD"s) can be defined by the criteria of either diffuse or localized necks. We used Electronic Speckle Pattern Interferometry (ESPI) in commercial 1100 aluminum sheet metals annealed at 400°C to determine the strains at which both types of neck started in uniaxial tension (U) and in quasi plane strain tension (PS) tests. In biaxial (B) loading we
Experimental Analysis of Nano and Engineering Materials and Structures, 2007
... Guillaume Montay1, Bruno Guelorget1, Ignacio Lira2, Marie Tourneix1, Manuel François1 and Cri... more ... Guillaume Montay1, Bruno Guelorget1, Ignacio Lira2, Marie Tourneix1, Manuel François1 and Cristián Vial-Edwards2 1Université de Technologie de Troyes, Laboratoire des ... In it, an initially flat specimen is placed between a matrix and a blank holder, and hydraulic pressure is ...
In this paper, an original application of ESPI in materials engineering has been described. The t... more In this paper, an original application of ESPI in materials engineering has been described. The technique was used to analyze a bulge test in order to study strain localization by following the strain rate progress. Results show that ESPI allows detecting clearly the two stages of localization, namely, the diffuse and localized necks. Using this technique, forming limit diagrams can
A procedure is proposed to calculate the uncertainty of the energy content associated with real-t... more A procedure is proposed to calculate the uncertainty of the energy content associated with real-time flow measurements of natural gas. The procedure was applied to a measuring scheme consisting of an arrangement of orifice plate meters installed in parallel, coupled to an on-line gas chromatograph and a real-time data processing flow computer. Two distinct sources of natural gas with appreciable
A model is proposed for the calibration of a standard platinum resistance thermometer (SPRT) in a... more A model is proposed for the calibration of a standard platinum resistance thermometer (SPRT) in accordance with the BIPM recommended procedures to realize the International Temperature Scale of 1990 (ITS-90). The model is used to obtain the standard uncertainty of measurement associated with the temperature indicated by the thermometer. The difference between calibration uncertainty and user's uncertainty is established. Equations
... PII: S0957-0233(97)81582-2 The ESPI measurement of the residual stress distribution in chemic... more ... PII: S0957-0233(97)81582-2 The ESPI measurement of the residual stress distribution in chemically etched cold-rolled metallic sheets Ignacio H Lira, Cristián Vial and Kimberly Robinson Pontificia Universidad Católica de Chile, Escuela de Ingenierıa, Santiago 22, Chile ...
Two methods to measure the diffusion coefficient of a species in a liquid by optical interferomet... more Two methods to measure the diffusion coefficient of a species in a liquid by optical interferometry were compared. The methods were tested on a 1.75 M NaCl aqueous solution diffusing into water at 26 °C. Results were D = 1.587 × 10-9 m2 s-1 with the first method and D = 1.602 × 10-9 m2 s-1 with the second method.
We consider the task of Bayesian inference of the mean of normal observations when the available ... more We consider the task of Bayesian inference of the mean of normal observations when the available data have been discretized and when no prior knowledge about the mean and the variance exists. An application is presented which illustrates that the discretization of the data should not be ignored when their variability is of the order of the discretization step. We
Optical Trapping Dynamics in Interference Field. [AIP Conference Proceedings 992, 681 (2008)]. Lu... more Optical Trapping Dynamics in Interference Field. [AIP Conference Proceedings 992, 681 (2008)]. Luis Alfredo Viera, Ignacio Lira, Leopoldo Soto, Cristián Pavez. Abstract. A model that predicts a particle trapping time in an two beams interference laser fields is proposed. ...
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Books by Ignacio Lira
En suma, la vocación de este libro es abrir el debate sobre las Smart Cities, explorando a partir de diferentes perspectivas y disciplinas (Antropología, Diseño, Ingeniería, Sociología, Arquitectura, Políticas Públicas...), la pregunta sobre qué implica una práctica urbana inteligente y sus efectos en la estructuración de la ciudad y sus discursos.
Papers by Ignacio Lira
En suma, la vocación de este libro es abrir el debate sobre las Smart Cities, explorando a partir de diferentes perspectivas y disciplinas (Antropología, Diseño, Ingeniería, Sociología, Arquitectura, Políticas Públicas...), la pregunta sobre qué implica una práctica urbana inteligente y sus efectos en la estructuración de la ciudad y sus discursos.