Search results for " Rob"

The conservation and diversity of ascidian cells and molecules involved in the inflammatory reaction: The Ciona robusta model

2021

Ascidians are marine invertebrate chordates belonging to the earliest branch (Tunicata) in the chordate phylum, therefore, they are of interest for studying the evolution of immune systems. Due to the known genome, the non-colonial Ciona robusta, previously considered to be C. intestinalis type A, is a model species for the study of inflammatory response. The internal defense of ascidians mainly relies on hemocytes circulating in the hemolymph and pharynx. Hemocytes can be in vivo challenged by LPS injection and various granulocyte and vacuolated cell populations differentiated to produce and release inflammatory factors. Molecular biology and gene expression studies revealed complex defens…

Foreed flushing of branch segments as a method for obtaining reactive explants of mature Quercus robur trees for micropropagation

1994

The aim of this study was to micropropagate mature Quercus robur L. trees when material retaining physiologically juvenile characteristics (stump sprouts, epicormic shoots) is not available. Branch segments from 70–300 year-old trees were force-flushed and the flushed, partially rejuvenated or reinvigorated shoots were used as a source of explants for establishment of cultures. In vitro establishment and multiplication was achieved with seven of the eight selected trees. The proliferation capacity of cultures of vertically placed explants declined after several subcultures, but efficient shoot multiplication was achieved by culturing decapitated shoots placed horizontally on GD medium suppl…

Exploring the development of mental rotation and computational skills in elementary students through educational robotics

2022

Abstract Interest in educational robotics has increased over the last decade. Through various approaches, robots are being used in the teaching and learning of different subjects at distinct education levels. The present study investigates the effects of an educational robotic intervention on the mental rotation and computational thinking assessment in a 3rd grade classroom. To this end, we carried out a quasi-experimental study involving 24 third-grade students. From an embodied approach, we have designed a two-hour intervention providing students with a physical environment to perform tangible programming on Bee-bot. The results revealed that this educational robotic proposal aimed at map…

Subsequent Keyframe Generation for Visual Servoing

2021

International audience; In this paper, we study the problem of autonomous and reliable positioning of a camera w.r.t. an object when only this latter is known but not the rest of the scene. We propose to combine the advantages and efficiency of a visual servoing scheme and the generalization ability of a generative adversarial network. The paper describes how to efficiently create a synthetic dataset in order to train a network that predicts an intermediate visual keyframe between two images. Subsequent predictions are used as visual features to autonomously converge towards the desired pose even for large displacements. We show that the proposed method can be used without any prior knowled…

Roberto Pane e la ricostruzione postbellica. Un approfondimento su alcuni temi siciliani

2010

Nella relazione che Roberto Pane scrive per gli Atti del IV Congresso Nazionale di Storia dell’Architettura del 1950, con il termine «pseudo restauri», lo studioso si riferisce a quegli interventi gestiti dalle Curie che si improvvisano con propri uffici tecnici, promuovendo restauri in perenne contrasto con i pareri delle Soprintendenze. È in questo passaggio appassionato, della sua militante relazione al congresso, che Pane cita chiaramente il caso da lui conosciuto del Duomo di Cefalù con il suo chiostro. Inoltre è chiaro come Roberto Pane avesse avuto modo di conoscere direttamente il monumento, dato che nell’archivio fotografico che lo studioso dedicava alle lezioni universitarie, si t…

Visual motion integration controls attractiveness of objects in walking flies and a mobile robot

2008

Walking fruit flies are attracted by near-by objects. They estimate the distance to these objects by the parallax motion of their images on the retina. Here we provide evidence from robot simulations that distance is assessed by motion integration over large parts of the visual field and time periods of 0.5 s to 2 s. The process in flies is not selective to image motion created by the self-motion of the fly but also sensitive to object motion and to the pattern contrast of objects. Added visual motion (e.g. oscillations) makes objects more attractive than their stationary counterparts. Front-to-back motion, the natural parallax motion on the eyes of a forward-translating fly, is preferred. …

Cannibalism and Incorporation in Michèle Roberts’s ‘The Cookery Lesson

2011

materialità corporea

Madri e figlie. Figure del "mostruoso" in Anger di Michèle Roberts

2010

INFLUENCE OF UNCERTAINTIES ON ROTATING FLEXIBLE SHAFT SUSPENDED BY 4-AXIS RADIAL ACTIVE MAGNETIC BEARINGS µ-SYNTHESIS AND LOOP-SHAPING-DESIGN

2012

This paper shows a comparison about dynamic behavior of a rotating shaft when it is suspended by 4-axis radial active magnetic bearing system. The active magnetic suspension is obtained by two different controllers which realize the robust stability and robust performance. The control systems used are µ-synthesis and loop shaping design procedure. Each of these controllers is characterized by fourinput and four output signals and the introduction of uncertainties on displacement gain and current gain is justified by the simple fact that during the time the component which constitutes these gains can be subjected to torn and worn which can lead the entire system to instability phenomena. The…

The economic metaphor of Italian politics for dynamic coalition regeneration in the robocup competition of Aibo robots

2005

The variation version of the economic metaphor of Italian politics, an architecture that loosely takes inspiration from the political organizations of democratic governments, following the example of Italian government, and which provides a solution for the coordination of a spare colony of robots, is competent to allow the coordination of the behaviors of a team of four robots in order to play soccer in the Robocup competition. The development of an evolution of economic metaphor of Italian politics is now outlined. This new approach proposes a mechanism to make a new coalition caused by the failure of the government strategy and by a general inefficiency of the whole colony during the rea…