Search results for "Forming."
showing 10 items of 1704 documents
Numerical analysis for formability boundaries definition in sheet metal forming operations
2008
Formability limits in sheet metal forming have been widely investigated through different approaches. The main aim of such approaches was to develop tools able to prevent or predict fracture occurrence in order to improve production quality. Forming limit diagrams (FLDs) and fracture criteria are probably the most utilised tools in this field; nevertheless, some drawbacks of such tools were demonstrated. In particular, forming limit curves are characterised by ineffective prediction capability if non linear deformation paths are taken into account. Moreover, the importance of stress paths was demonstrated in order to predict fracture, and forming limit stress diagrams are, nowadays, deeply …
Numerical prediction of elastic springback in automotive complex parts
2007
Foreign (In)Direct Investment in Chinese Contemporary Art Game: The Case Studies of Uli Sigg, Guy Ullens and beyond, 1989-2013
2021
The boom in Chinese contemporary art is the result of China’s opening to foreign investment and private entrepreneurship in 1978, and the significant contribution by the transnational art enterprises of long-term patron-investor-collectors, such as Uli Sigg and Guy Ullens, between approximately 1989 and 2013. Through the opportunity offered by the gap between the private market mechanism and national heritage process for the “art game”, these investors used a variation of the controversial “Saatchi model” to generate high ROI. A further effect has been to bring CCA onto the global stage and complete the ecosystem of the art industry, building a foundation for the art economy of post-Mao Chi…
Fast Channel Estimation in the Transformed Spatial Domain for Analog Millimeter Wave Systems
2021
Fast channel estimation in millimeter-wave (mmWave) systems is a fundamental enabler of high-gain beamforming, which boosts coverage and capacity. The channel estimation stage typically involves an initial beam training process where a subset of the possible beam directions at the transmitter and receiver is scanned along a predefined codebook. Unfortunately, the high number of transmit and receive antennas deployed in mmWave systems increase the complexity of the beam selection and channel estimation tasks. In this work, we tackle the channel estimation problem in analog systems from a different perspective than used by previous works. In particular, we propose to move the channel estimati…
Invariant natural killer T cells treated with rapamycin or transforming growth factor-β acquire a regulatory function and suppress T effector lymphoc…
2015
Invariant natural killer T cells treated with rapamycin or transforming growth factor-β acquire a regulatory function and suppress T effector lymphocytes
Re-cyclical Urbanism. Un'agenda progettuale per la metamorfosi circolare
2016
Siamo di fronte alla nascita delle prime forme di un Re-cyclical Urbanism, una “urbanistica re-ciclica” basata sul reciclo di aree, infrastrutture e paesaggi e guidata da processi circolari adattivi e incrementali, di cui è indispensabile indagare indizi e pratiche già in atto per individuare le genealogie, riconoscere le epistemologie, definire i protocolli, ma soprattutto per forgiare i dispositivi progettuali per re-immaginare l’urbanistica nell’era della transizione circolare. Sono numerose le ricerche teoriche ed empiriche che si stanno facendo carico di riaggettivare l’urbanistica (dall’opensource urbanism di Sassen, al landscape urbanism di Waldheim, fino all’ecological di Mostafavi,…
Re-cyclical Urbanism. Visioni. paradigmi e progetti per la metamorfosi circolare
2016
Riciclo, riuso e riattivazione sono le parole chiave della metamorfosi circolare che stiamo attraversando e che si traducono sempre più spesso in progetti ecologici, intelligenti e creativi per le città, le infrastrutture e i paesaggi. Dagli albori di un Neo-antropocene che tenda a ridurre la sua impronta ecologica e ad incrementare l’intelligenza collettiva della noosfera, emergono le visioni e i paradigmi di un Re-cyclical Urbanism, una urbanistica re-ciclica non dissipativa ma generativa, di cui il libro indaga pratiche già in atto per individuare protocolli di pianificazione e per forgiare dispositivi progettuali capaci di agire nella società circolare. Il volume contiene le ricerche e …
Creating Digital Musical Instruments With and for Children: Including Vocal Sketching as a Method for Engaging in Codesign
2020
International audience; A class of master of science students and a group of preschool children codesigned new digital musical instruments based on workshop interviews involving vocal sketching, a method for imitating and portraying sounds. The aim of the study was to explore how the students and children would approach vocal sketching as one of several design methods. The children described musical instruments to the students using vocal sketching and other modalities (verbal, drawing, gestures). The resulting instruments built by the students were showcased at the Swedish Museum of Performing Arts in Stockholm. Although all the children tried vocal sketching during preparatory tasks, few …
Évolution de la durée et du tempo dans les enregistrements du Sacre du printemps d’Igor Stravinski de 1929 à 2019. Une cartographie des styles d’inte…
2022
Le Sacre du printemps constitue une oeuvre clé pour l’histoire de l’enregistrement et pour la musicologie de l’interprétation. Igor Stravinski considérait ses enregistrements comme établissant un modèle d’interprétation faisant autorité, mais c’est un fait connu qu’il ne respecte pas ses propres indications de tempo et fait un usage plus ou moins important du rubato. Ces incertitudes sur les tempi ont créé le doute et ont ouvert un espace de liberté pour les interprètes. Cet article s’est donné pour objectif d’examiner à nouveaux frais l’évolution de l’interprétation du Sacre des points de vue de la durée et du tempo. Le recours à un vaste corpus de 96 versions discographiques enregistrées …
L’anxiété de performance dans l’enseignement musical. Une revue de littérature
2022
How might music teachers help their students cope with the anxiety-provoking aspects of public performance? This article aims to provide some elements to answer this question. It is important to consider that public performance is one of the main aspects of musical practice from the start of the learning process. Given the high prevalence of music performance anxiety—MPA among musicians of all levels and ages, the teacher has an important role. Based on a literature review, the sources of MPA are analyzed and, for each of them, strategies that could be used by a music teacher are indicated. Emphasis is placed on prevention and on the importance of raising music teachers’ awareness of MPA.