Automatic face recognition of video sequences using self-eigenfaces

The objective of this work is to provide an efficient face recognition scheme useful for video indexing applications. In particular we are addressing the following problem: given a set of known images and given a video sequence to be indexed, find where the corresponding persons appear in the sequence. Conventional face detection schemes are not well suited for this application and alternate and more efficient schemes have to be developed. In this paper we have modified our original generic eigenface-based recognition scheme presented in [1] by introducing the concept of selfeigenfaces. The resulting scheme is very efficient to find specific face images and to cope with the different face conditions present in a video sequence. The main and final objective is to develop a tool to be used in the MPEG-7 standardization effort to help video indexing activities. Good results have been obtained using the video test sequences used in the MPEG-7 evaluation group.Peer ReviewedPostprint (published version

Stakeholders’ environmental influence. An empirical analysis in the Spanish hotel industry

We draw on the insights of stakeholder theory to explore the extent to which environmental management practices are driven by (i) an attempt to enhance a firm’s legitimacy, and (ii) a response to pressures arising from powerful stakeholders. The material for this investigation has been gathered from a sample of 279 Spanish hotels. The hotel industry which is only marginally affected by environmental regulation and is thus a widely neglected setting in this context, could be a particularly interesting subject for investigation, able to throw some light on the extent to which firms produce different responses to the environmental concerns of their stakeholders. Our results reveal that corporate environmental management practices may be a response to genuine environmental concerns, and we then speak of explicit environmental management, or there may also be reasons different from the environmental, in which case we speak of tacit environmental management. Our findings suggest that explicit and tacit environmental management account for a variety of organizational responses to the environmental demands of stakeholders, depending on (i) the stakeholders’ power regarding environmental issues, (ii) the stakeholders’ use of power to protect the environment, and (iii) the perceived economic advantages of environmental management activities.Publicad

Exaltación de la iconografía local en la segunda mitad del siglo XVIII. La ciudad de Toledo

El panorama artístico durante la Ilustración española plantea al investigador soluciones complejas y aparentemente contradictorias. Este artículo pretende ofrecer, a través de diversos ejemplos relacionados con el ámbito toledano, la vinculación entre neoclasicismo y conciencia histórica. En otras palabras, la recuperación intencional de un pasado en donde la exaltación de la monarquía y el sentimiento religioso avanzan de manera paralela y a través de las fórmulas de representación más características del siglo XVIII.The artistic view during Spanish Enlightenment outlines complex and apparently contradictory solutions to the investigator. This article intends to show, through diverse examples related to the Toledan area, the attachment among neoclassicism and historical conscience. In other words: the intentional recuperation of a past in which monarchical exaltation and religious feeling advance parallel and through the most characteristical representation formulae of the XVIII century

Stakeholders’ environmental influence. An empirical analysis in the Spanish hotel industry.

We draw on the insights of stakeholder theory to explore the extent to which environmental management practices are driven by (i) an attempt to enhance a firm’s legitimacy, and (ii) a response to pressures arising from powerful stakeholders. The material for this investigation has been gathered from a sample of 279 Spanish hotels. The hotel industry which is only marginally affected by environmental regulation and is thus a widely neglected setting in this context, could be a particularly interesting subject for investigation, able to throw some light on the extent to which firms produce different responses to the environmental concerns of their stakeholders. Our results reveal that corporate environmental management practices may be a response to genuine environmental concerns, and we then speak of explicit environmental management, or there may also be reasons different from the environmental, in which case we speak of tacit environmental management. Our findings suggest that explicit and tacit environmental management account for a variety of organizational responses to the environmental demands of stakeholders, depending on (i) the stakeholders’ power regarding environmental issues, (ii) the stakeholders’ use of power to protect the environment, and (iii) the perceived economic advantages of environmental management activities.Environmental management; Stakeholder theory; Hotels; Service industry;

Validez y eficacia de la observación conductual en la depresión : diferencias significativas entre depresivos y no depresivos

Los autores presentan en este artículo los resultados de una investigación realizada con tres grupos de sujetos: depresivos, pacientes psiquiátricos no depresivos y normales, en un intento de acercamiento diagnóstico a la depresión a través de técnicas de observación conductual, para probar su validez y eficacia.The authors present in this article the outcomed of a research program carr out with three groups of subjects: depressed outpatients, psychiatric patients not depressed and normal. It represents a diagnostic approach to depression through behavioral observation techniques, to show their validity and efficacy