Search results for "methodologies"
showing 10 items of 2106 documents
Toward an Integrated System for Surveillance and Behaviour Analysis of Groups and People
2013
Security and INTelligence SYStem is an Italian research project which aims to create an integrated system for the analysis of multi-modal data sources (text, images, video, audio), to assist operators in homeland security applications. Within this project the Scientific Research Unit of the University of Palermo is responsible of the image and video analysis activity. The SRU of Palermo developed a web service based architecture that provides image and video analysis capabilities to the integrated analysis system. The developed architecture uses both state of the art techniques, adapted to cope with the particular problem at hand, and new algorithms to provide the following services: image …
Opportunities and Limitations of Haptic Technologies for Non-visual Access to 2D and 3D Graphics
2014
Existing and emerging haptic technologies offer methods for non-visually rendering and interacting with 2D and 3D graphical information. These technologies include force feedback devices, touch surfaces with vibrotactile feedback, wearable vibrotactiles, and touch surfaces with electrostatic feedback. In this paper we will focus on approaches to non-visual access to 3D shapes. The interactive models focus on two approaches: simulation of 3D shape and perspective on a 2D touch surface; and interactive exploration of 3D shapes using physical motion in a virtual 3D space with either a force feedback controller or wearable haptics. The technologies will be reviewed along with suitability for th…
UNCLES: Method for the identification of genes differentially consistently co-expressed in a specific subset of datasets
2015
Background Collective analysis of the increasingly emerging gene expression datasets are required. The recently proposed binarisation of consensus partition matrices (Bi-CoPaM) method can combine clustering results from multiple datasets to identify the subsets of genes which are consistently co-expressed in all of the provided datasets in a tuneable manner. However, results validation and parameter setting are issues that complicate the design of such methods. Moreover, although it is a common practice to test methods by application to synthetic datasets, the mathematical models used to synthesise such datasets are usually based on approximations which may not always be sufficiently repres…
La « Révolution Conservatrice » en linguistique : linguiste Staline entre « notions essentielles » et l’esprit de Weimar
2021
Fascicule en libre accès sur le site de l'éditeur - ISBN : 978-5-91674-626-6; International audience; Publié lors de la discussion linguistique de 1950, le texte de Staline laisse entendre une continuité avec la tradition, ce qui implique l’image d’une société soviétique qui a réussi à conserver son caractère «traditionnaliste» malgré des coupures historiques évidentes. Cette «continuité» serait en grande partie assurée par la langue dite nationale. Plusieurs éléments «révolutionnaires-conservateurs» du texte de Staline font penser à la métaphore de l’«Allemagne russe» comme à l’une de ses sources conceptuelles.
Video surveillance and security policy in France: From regulation to widespread acceptance
2011
This article presents a historical account of the introduction and use of video surveillance cameras in France. Specific reference is made of the introduction of regulatory and legislative arrangements and to political debates surrounding the provision of video surveillance cameras. A feature of the French context has been a desire by national government to install cameras more widely in public places and a resistance to do so by local regions (departments). This highlights a traditional tension between central and local government in France and the significance of political rhetoric to the ongoing installation and operation of video surveillance cameras.
Service Innovation Methodologies II : How can new product development methodologies be applied to service innovation and new service development? : R…
2007
This report presents various methodologies used in new product development and product innovation and discusses the relevance of these methodologies for service development and service innovation. The service innovation relevance for all of the methodologies presented is evaluated along several service specific dimensions, like intangibility, inseparability, heterogeneity, perishability, information intensity, and co-creation. The methodologies discussed are mainly collected from the Product Development and Management Association (PDMA) glossary. The main conclusions of the report are that several methodologies have been identified that may be applied to service innovation with no or minor …
Bases for induced characters
1996
AbstractIf G is a finite solvable group, we show that Isaacs' theory on partial characters on Hall π-subgroups can be developed for the nilpotent injectors of G. Therefore, the irreducible characters of G are partitioned into blocks associated to some nilpotent subgroups of G.
Improving the stability bound for the PPH nonlinear subdivision scheme for data coming from strictly convex functions
2021
Abstract Subdivision schemes are widely used in the generation of curves and surfaces, and therefore they are applied in a variety of interesting applications from geological reconstructions of unaccessible regions to cartoon film productions or car and ship manufacturing. In most cases dealing with a convexity preserving subdivision scheme is needed to accurately reproduce the required surfaces. Stability respect to the initial input data is also crucial in applications. The so called PPH nonlinear subdivision scheme is proven to be both convexity preserving and stable. The tighter the stability bound the better controlled is the final output error. In this article a more accurate stabilit…
A nonlinear Chaikin-based binary subdivision scheme
2019
Abstract In this work we introduce and analyze a new nonlinear subdivision scheme based on a nonlinear blending between Chaikin’s subdivision rules and the linear 3-cell subdivision scheme. Our scheme seeks to improve the lack of convergence in the uniform metric of the nonlinear scheme proposed in Amat et al. (2012), where the authors define a cell-average version of the PPH subdivision scheme (Amat et al., 2006). The properties of the new scheme are analyzed and its performance is illustrated through numerical examples.
Data Compression with ENO Schemes: A Case Study
2001
Abstract We study the compresion properties of ENO-type nonlinear multiresolution transformations on digital images. Specific error control algorithms are used to ensure a prescribed accuracy. The numerical results reveal that these methods strongly outperform the more classical wavelet decompositions in the case of piecewise smooth geometric images.