Search results for "visibility"
showing 10 items of 149 documents
From time series to complex networks: the visibility graph
2008
In this work we present a simple and fast computational method, the visibility algorithm , that converts a time series into a graph. The constructed graph inherits several properties of the series in its structure. Thereby, periodic series convert into regular graphs, and random series do so into random graphs. Moreover, fractal series convert into scale-free networks, enhancing the fact that power law degree distributions are related to fractality, something highly discussed recently. Some remarkable examples and analytical tools are outlined to test the method's reliability. Many different measures, recently developed in the complex network theory, could by means of this new approach cha…
Transverstites re-existences: A counterhistory from the visual difference in Peru
2018
El vínculo entre naturaleza y deshumanización es un discurso moderno colonial de género que mantiene su vigencia mediante la basurización simbólica y concreta de quienes son vistos como inferiores, antinaturales y hasta como animales, convertidos en un desecho de la sociedad. Una forma de visualizar al otro como elemento sobrante del sistema simbólico. En este sentido, maniobrar en el campo de la visualidad travesti, sus convenciones y estereotipos, se convierte en una práctica de resistencia en tanto que se enfrenta al régimen escópico eurocéntrico disciplinante, astutamente camuflado. Pero, igualmente, de re-existencia, al proponer la co-presencia visual de la diferencia, y por ende, la e…
A new multimodal RGB and polarimetric image dataset for road scenes analysis
2020
International audience; Road scene analysis is a fundamental task for both autonomous vehicles and ADAS systems. Nowadays, one can find autonomous vehicles that are able to properly detect objects present in the scene in good weather conditions but some improvements are left to be done when the visibility is altered. People claim that using some non conventional sensors (infra-red, Lidar, etc.) along with classical vision enhances road scene analysis but still when conditions are optimal. In this work, we present the improvements achieved using polarimetric imaging in the complex situation of adverse weather conditions. This rich modality is known for its ability to describe an object not o…
World-wide collaboration among medical specialties in smoking research: production, collaboration, visibility and influence
2009
The aim of this study was to analyse the network of scientific collaboration generated by the co-authorship of articles on smoking among different specialties on a world-wide level through the Science Citation Index (SCI) in the period 1999–2003. Material and methods: We selected collaboration articles on smoking research among different specialties listed in the SCI (1999–2003). The underlying network of collaboration among specialties was analysed, comparing production, visibility and centrality. Results: Forty-nine different specialties were identified, of which 47 (96%) had produced articles in collaboration (461 articles). The most productive specialty was Psychiatry–Psychology. The sp…
A self-routing protocol for distributed consensus on logical information
2010
In this paper, we address decision making problems, depending on a set of input events, with networks of dynamic agents that have partial visibility of such events. Previous work by the authors proposed so-called logical consensus approach, by which a network of agents, that can exchange binary values representing their local estimates of the events, is able to reach a unique and consistent decision. The approach therein proposed is based on the construction of an iterative map, whose computation is centralized and guaranteed under suitable conditions on the input visibility and graph connectivity. Under the same conditions, we extend the approach in this work by allowing the construction o…
Map of the visibility and search engine positioning of the main Spanish media groups
2020
Este trabajo analiza la visibilidad y posicionamiento en buscadores de los sitios web de los principales grupos de comunicación españoles. Se compara su visibilidad web y su presencia en los resultados de búsqueda de Google a través de programas de análisis SEO y una metodología propia que se ha denominado Índice de Visibilidad Agregada. Se ha realizado un análisis comparativo de los grupos Atresmedia, COPE, Godó, Hearst Magazines, Henneo, Imagina Media Audiovisual, Intereconomía Corporación, Joly, Mediaset España Comunicación, Planeta, Prensa Ibérica, Prisa, Unidad Editorial, Vocento y Zeta. Se ha podido establecer que Unidad Editorial es el grupo con mayor tráfico web proveniente de búsqu…
An Observation Framework for Multi-agent Systems
2009
Existing middleware platforms for multi-agent systems (MAS) do not provide general support for observation. On the other hand, observation is considered to be an important mechanism needed for realizing effective and efficient coordination of agents. This paper describes a framework called Agent Observable Environment (AOE) for observation-based interaction in MAS. The framework provides 1) possibility to model MAS components with RDF-based observable soft-bodies, 2) support for both query and publish/subscribe style ontology-driven observation, and 3) ability to restrict the visibility of observable information using observation rules. Additionally, we report on an implementation of the fr…
Logical Consensus for Distributed Network Agreement
2008
In this paper we introduce a novel consensus mechanism where agents of a network are able to share logical values, or Booleans, representing their local opinions on e.g. the presence of an intruder or of a fire within an indoor environment. Under suitable joint conditions on agents? visibility and communication capability, we provide an algorithm generating a logical linear consensus system that is globally stable. The solution is optimal in terms of the number of messages to be exchanged and the time needed to reach a consensus. Moreover, to cope with possible sensor failure, we propose a second design approach that produces robust logical nonlinear consensus systems tolerating a maximum n…
Tecnologie digitali per la visibilità del patrimonio culturale. L'immagine di Tarragona nella prospettiva dell'offerta
2023
This work aims to contribute to the debate on the role of new technologies in the process of urban image construction, presenting as a case study the digital offering of the UNESCO site of Tarragona. Inclusion on the World Heritage List may represent a decisive event in the definition of an urban image, which new technologies can promote and project to the outside world. By making the winning narrative visible, technologies offer spaces for tourist desire and consumption and show us how cities are told by highlighting some aspects and excluding others. After explaining the dynamics of the context under study, the paper demonstrates how digital tools can convey a brand, mediate or transfigur…
The Transformation of Female Roles in Cosa Nostra: A Diachronic and Comparative Analysis
2012
The chapter examines the transformation of the roles of women in Italian organized crime groups. Starting from a comparative analysis of the way in which – over time – the different manifestations of female power and male domination in certain organized crime groups (Cosa Nostra and others) have changed, we seek to understand what female power is in these contexts and what are the circumstances which make it legitimate and visible, what are the different modalities in which it expresses itself over time, in different locations and criminal contexts. The studies of women’s roles in mafias have shown how, over time, these have changed, particularly in terms of their ‘visibility’. Over the las…