Search results for "VISION"

A Cognitive Architecture for Robotic Hand Posture Learning

2005

This paper deals with the design and implementation of a visual control of a robotic system composed of a dexterous hand and video camera. The aim of the proposed system is to reproduce the movements of a human hand in order to learn complex manipulation tasks or to interact with the user. A novel algorithm for robust and fast fingertips localization and tracking is presented. A suitable kinematic hand model is adopted to achieve a fast and acceptable solution to an inverse kinematics problem. The system is part of a cognitive architecture for posture learning that integrates the perceptions by a high-level representation of the scene and of the observed actions. The anthropomorphic robotic…

Recensione Carlo Riggi. Rarefaction

2019

The excessive stereotypical attractiveness and the unreal perfection that the photographs manifest today, especially through social networks, as well as their huge amount, brought it Sicilian psychoanalyst Carlo Riggi to research and communicate with his photographs a way to alienate yourself from an iconic, uncanny invasion

Moving RTS/CTS to the frequency domain: an efficient contention scheme for 802.11ax networks

2019

In this paper, we propose a contention mechanism based on the execution of multiple contention rounds in the frequency domain (ReCHo), which is designed to offer high throughput performance and robustness with respect to imperfect carrier sensing. The main idea is using narrow tones as signalling messages for performing channel access contentions and allowing the Access Point (AP) to echo these signals, in order to extend the sensing capabilities to all the stations associated to the AP. In particular, we refer to the emerging IEEE 802.11ax standard, showing how our scheme can boost performance of random access with respect to the current version of IEEE 802.11ax OFDMA Back-Off (OBO), even …

'Good to Repeat': Making Random Access Near-Optimal with Repeated Contentions

2020

Recent advances on WLAN technology have been focused mostly on boosting network capacity by means of a more efficient and flexible physical layer. A new concept is required at MAC level to exploit fully the new capabilities of the PHY layer. In this article, we propose a contention mechanism based on Repeated Contentions (ReCo) in frequency domain. It provides a simple-to-configure, robust and short-term fair algorithm for the random contention component of the MAC protocol. The throughput efficiency of ReCo is not sensitive to the number of contending stations, so that ReCo does not require adaptive tuning of the access parameters for performance optimization. Efficiency and robustness is …

Reflexiones sobre la concurrencia de violencia económica en el contexto de familia : impacto y mecanismos para su neutralización

2021

Through this work we carry out a dissertation on the phenomenon of economic violence, as a manifestation of gender violence, in the family context, and, especially, from the perspective of the divorce framework. We will analyze the harmful effects that it produces, the damage that it triggers on the most basic and essential interests of the family, and its use as a control mechanism by the aggressors. In addition to a vision of the different mechanisms that, enshrined in our legal system, serve to distort it.

Effects of menu structure and touch screen scrolling style on the variability of glance durations during in-vehicle visual search tasks.

2011

The effects of alternative navigation device display features on drivers' visual sampling efficiency while searching forpoints of interest were studied in two driving simulation experiments with 40 participants. Given that the number of display items was sufficient, display features that facilitate resumption of visual search following interruptions were expected to lead to more consistent in-vehicle glance durations. As predicted, compared with a grid-style menu, searching information in a list-style menu while driving led to smaller variance in durations of in-vehicle glances, in particular with nine item displays. Kinetic touch screen scrolling induced a greater number of very short in-v…

Ancora zone d'ombra in tema di ammissibilità della revisione e indagini difensive svolte all'estero

2009

Quasi *-algebras and generalized inductive limits of C*-algebras

2011

Revisione del processo iniquo: la Corte costituzionale “getta il cuore oltre l’ostacolo”

2011

Culminata in una decisione della Consulta, una complessa evoluzione giurisprudenziale ha riguardato l'esecuzione delle condanne della Corte di Strasburgo per "iniquità" del processo. Con la censura dell'art. 630 c.p.p., la Corte costituzionale ha segnato una svolta ermeneutica: in attesa di un intervento del legislatore, l'interprete è chiamato ora a confrontarsi con una "nuova" ipotesi di revisione, traendo spunti anche dalla comparazione con alcuni sistemi stranieri.

Iron Induces Proliferation and Morphogenesis in Primmorphs from the Marine SpongeSuberites domuncula

2002

Dissociated cells from marine demosponges retain their proliferation capacity if they are allowed to form special aggregates, the primmorphs. On the basis of incorporation studies and septin gene expression, we show that Fe3+ ions are required for the proliferation of cells in primmorphs from Suberites domuncula. In parallel, Fe3+ induced the expression of ferritin and strongly stimulated the synthesis of spicules. This result is supported by the finding that the enzymatic activity of silicatein, converting organosilicon to silicic acid, depends on Fe3+. Moreover, the expression of a scavenger receptor molecule, possibly involved in the morphology of spicules, depends on the presence of Fe3…