751 research outputs found
Neural-Network-Based Discrete-Time Variable Structure Control of Robotic Manipulators
No full textThis paper presents a neural-network-based discrete-time variable structure control for a planar robotic manipulator. Radial basis function neural networks are used to learn about uncertainties affecting the system. The analysis of the control stability is given and the controller is experimentally evaluated on the ERICC robot arm. The experiments show that the proposed controller produces good trajectory tracking performance and is robust in the presence of model inaccuracies
Corrado Cagli. Transatlantic bridges, 1938-1947
No full textIn the 1930s the young Italian artist, Corrado Cagli was a rising star of the Scuola Romana, supported by the Fascist regime despite being both Jewish and a homosexual. Following the Racial Laws, he fled first to Paris, and then to the USA, where he remained until 1947. Raffaele Bedarida’s new book, Corrado Cagli – La pittura, l’esilio, l’America (1938-1947) Donzelli Editore, 2018 (soon to be translated into English by CPL Editions), focuses on Cagli’s American exile.
While examining Cagli in the context of the artistic and intellectual migration from Europe to the US, Bedarida provides valuable new insight into the specific plight of this Italian Jewish artist, once championed by Fascism and into the complexities of the use of art for cultural diplomacy.
The author combines biography, cultural history, and critical analysis in exploring a decisive period in the life and work of a painter whose complex personality and non-signature style, defy classifications. The book also provides thought-provoking and nuanced arguments on the ideologically based ostracism that Cagli encountered upon returning to Italy in the immediate aftermath of the war. Because of his past as a former regime-endorsed artist, his recent American success, his participation in the liberation of Europe from Nazi-Fascism with the American army, and Jewish exile, Cagli simply did not fit into any of the faction of Italy’s post-war heated cultural disputes.
Based on extensive original research and written with brio, Bedarida’s book is an essential contribution to a growing field of studies that examine how, by welcoming artist and intellectuals in flight from Nazi-Fascism, the United States had been given what Will Norman has called “custodianship for a civilization.
Proceedings of the LREC 2020 workshop on Resources and Techniques for User and Author Profiling in Abusive Language (ResT-UP 2020)
No full textThis volume documents the Proceedings of the 1st Workshop on Resources and Techniques for User and Author Profiling in Abusive Language (ResT-UP), held online on 12 May 2020 as part of the LREC 2020 conference (International Conference on Language Resources and Evaluation).
The workshop aimed at bringing together researchers and scholars working on author profiling and automatic detection of abusive language on the Web, e.g., cyberbullying or hate speech, with a twofold objective: improving the existing LRs, e.g., datasets, corpora, lexicons, and sharing ideas on stylometry techniques and features needed for profile information extraction and classification. ResT-UP targeted Profiling scholars and research groups, experts in Statistic and Stylistic Analysis of texts as well as computational linguists who investigate author profile and personality both in short texts (social media posts, blog texts and email) and in long texts (such as pamphlets, (fake) news and political documents). ReST-UP represented an opportunity to share profiling experiments with the scientific community and to show automatic detection techniques of abusive language on the Web. Despite the cancellation of LREC 2020 due to the COVID-19 international emergency, ResT-UP was organized online on Microsoft Teams on May 12th 2020 and the programme included three oral presentations and featured an invited talk by Paolo Rosso. ResT-UP was attended by about fifty representatives of academic and industrial organisations
Improving front crawl with continuous short-delayed video feedback
No full textCoaches use several methods to analyze elite athletes' performances and define the most suitable training practices. Quantitative (competition performance, biomechanics, psychological and physiological parameters) and qualitative (technical execution) assessments serve this purpose. Video-based approaches allow quantitative and qualitative evaluations but are specifically instrumental in examining the swimmer's technique, a crucial component permanently addressed throughout the swimmer's competitive activity. Therefore, coaches frequently use video analysis, even if it implies time-consuming efforts to shoot, digitalize, and process their swimmer's video recordings. However, by doing this, coaches can detect all technical issues, especially from underwater views, and provide adequate corrections to swimmers (Mooney et al., 2016).
In physical education, practical mobile devices allow boost instructions simply by video captures or thanks to dedicated apps for video analysis (Laughlin et al., 2019), often free. Apps are generally easy to use with aerial recordings, but unfortunately, they do not entirely respond to the swimming needs that should profit from additional underwater visions. Action sports cameras are fit for underwater motion analysis (Bernardina et al., 2016). Still, they cannot provide real-time streaming due to signal loss when immersed, reducing their practicality for underwater video shooting to satisfy immediate didactic purposes. Nevertheless, with alternative underwater cameras and open-source software such as Kinovea, performers can receive immediate video feedback only with a few seconds delay.
The visual information the performers receive can effectively support verbal feedback coaches or teachers commonly provide during training or education (Guadagnoli et al., 2002). Hence, the benefits from video-based provisions are not confined to elite athletes. For example, video supports have been used successfully in swim teaching (Scurati et al., 2019; Syahrastani, 2014) to complete ordinary educational methods such as verbal instructions, teacher demonstrations, and drawings. Furthermore, by video-based solutions to watch previously executed actions, the performers can receive additional feedback enriching individuals' sensory perceptions (SteMarie, 2013). Coaches and teachers are facilitated in guiding swimmers' attention, focusing on the more accurate and efficient technical execution of the stroke.
This study with young competitive swimmers aimed to investigate the effects on the front crawl performance and technique of supplementation of different forms of video feedback (immediate, postponed, none) by employing relatively practical video devices during swim training
Assessing Rolling Abilities in Primary School Children : Physical Education Specialists vs. Generalists
No full textTeaching physical education requires competencies to conduct the classes and to assess the motor skills of practitioners. Specialists (physical education professionals) and generalists (primary school teachers) differently experienced motor tasks during their academic education. This study aimed to compare the teachers' ability in assessing the children's forward and backward rolls from the analysis of the reliability of an evaluation grid of rolling abilities (Information Scale for Agility on the Soil, InfoSAS), which was investigated in a first study with teachers. A second study in young children explored the responsiveness of the InfoSAS to discriminate by skill level or by training effects. When administered by specialists, the InfoSAS resulted in being reliable (forward: p = 0.087 and p = 0.908; backward: p = 0.926 and p = 0.910; intra- and inter-rater reliability, respectively) and responsive in detecting differences due to expertise (gymnasts vs. primary school children; forward: p = 0.003, backward: p = 0.016) or improvements after specific training in rolling (pre- vs. post-children's training; forward: p = 0.005, backward: p = 0.001). The results support the conclusion that specialists exhibit higher competence than generalists, which allows proper application of the InfoSAS, possibly because of the practice of skills and reflective teaching styles in physical activity they experienced, along with their academic education in sport sciences
A blind method for the estimation of the Hurst exponent in time series: Theory and application
No full textSlavo, romanzo, germanico. A proposito di alcune somiglianze e differenze nello sviluppo fonologico
No full textRaffaele Caldarelli
Slavic, Romance,Germanic: about some Similarities and Differences in Phonological Development
In this paper the author aims at drawing a sketch of some aspects of the early Slavic phonological development, in terms of syllable structure, vocal quantity etc. The natural theory of syllabifi cation is taken into account as well as other factors. He tries also to shed some light on several controversial questions by a brief attempt at making a typological comparison between some aspects of phonological development in Slavic, Romance and Germanic languages. In this frame he discusses mainly some features of syllable structure in Romance and Germanic languages
Per una temporalità circadiana. «Tre romanzi di una giornata» (1982) di Raffaele La Capria
No full textIn this paper, the author offers a Ricœurian reading of the ‘circadian novel’, taking Raffaele La Capria’s Tre romanzi di una giornata as his case study. After discussing current scholarship on the ‘temporal turn’ and the so called ‘one-day novel’, the author investigates the temporal structures of La Capria’s works through three temporal elements: differential, mundane, and mimetic. The author argues that these three elements, functioning both with and against each other, express the central concern of the circadian novel, namely the ‘fullness of time’
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