Search results for "INTERFACE"
showing 10 items of 2139 documents
Effective reference and current integration for large displacement interface
2016
The most common interface formulations proposed in literature are generally based on the restrictive hypothesis of small strains and small displacements and, even though their application to geometrically nonlinear problems is of paramount interest, only few contributions are available in literature. Motivations are probably due to the difficulties encountered on such formulation, as already mentioned by several authors. A pioneering formulation is the finite displacement three-dimensional interface developed by Ortiz and Pandolfi in [1], where normal and tangential traction components are evaluated with respect to the middle surface in the current configuration, producing a non-symmetric g…
Interface model for the nonlinear analysis of blocky structures of ancient Greek temples
2010
The presence of singularity surfaces with reference to the displacement field is a characteristic of a number of structural systems. Strong discontinuities are present in old masonry structures where dry joints connect the blocks or the mortar ageing suggests to neglect the adhesion properties. These structures cannot be considered a continuum but rather an assembly of blocks. These discontinuous structures could be modelled as an assembly of blocks interacting trough frictional joints whose mechanical behaviour is described by appropriate interface laws. In the present work an interface model present in literature is adopted, the double asperity model, which has been implemented in a stand…
Analyse semio-ergonomique d'interfaces multimédias
2002
Communication affichée; National audience; Cet article présente une démarche visant à combiner les méthodes d'analyses de produits multimédia utilisées dans deux champs différents : la sémiologie et l'ergonomie. Ces méthodes complémentaires donnent des résultat dans trois principales directions d'analyse. La capacité fonctionnelle du produit, sa facilité d'utilisation et son esthétique. Dans ce contexte, des méthodes d'analyse des signes qui composent les message permettent d'évoquer des hypothèses qui sont validées ou non à l'aide des méthodes d'observation en situation.
Editors' Foreword:Interfaces: Crossing Borders: Appropriations and Collaborations
2017
International audience
Sémiotique des interfaces : la promesse du flat design
2015
International audience; Popularisé par l'informatique, le concept d'interface a connu une extension considérable dans le domaine des sciences de la communication où il désigne tout dispositif favorisant l'échange et l'interaction entre différents actants (personnes, systèmes, objets, etc.) ; l'interface 1 n'est rien d'autre, en fait, que la face opérationnelle du canal de Shannon, le passage obligé de tout processus de communication et particulièrement de médiation puisqu'il s'agit alors d'introduire de la continuité entre deux systèmes aux propriétés différentes, de briser cette frontière commune à deux domaines : plus les éléments à apparier sont hétérogènes ou complexes, plus le rôle de …
Photoinduced Electron Transfer in a Porphyrin-Fullerene Dyad at a Liquid Interface
2022
The excited-state properties of an amphiphilic porphyrin–fullerene dyad and of its porphyrin analogue adsorbed at the dodecane/water interface are investigated by using surface second-harmonic generation. Although the porphyrin is formally centrosymmetric, the second-harmonic spectra of both compounds are dominated by the intense Soret band of the porphyrin. Polarization-selective measurements and molecular dynamics simulations suggest an angle of about 45° between the donor–acceptor axis and the interfacial plane, with the porphyrin interacting mostly with the nonpolar phase. Time-resolved measurements reveal a marked concentration dependence of the dynamics of both compounds upon Q-band e…
Progress in Understanding of the Interactions between Functionalized Polyolefins and Organo-Layered Double Hydroxides
2014
The dispersion of organo-layered double hydroxides (O-LDH) in functionalized polyolefins (POs) is investigated. Two different polyethylene matrices (maleic anhydride (MAH) and diethyl maleate functionalized) are tested and a hydrogenated fatty acid modified LDH is used. The attention is focused on evidencing the interaction between the functional groups of the polymer and the O-LDH through FT-IR. Moreover, a combination of solvent fractionation, morphological, and rheological characterizations enables to gain a deeper insight into the structure of these composites. In particular, the formation of bridging bonds between the particles and MAH functionalized macromolecules is assumed, possibly…
Tribological properties of thin films made by atomic layer deposition sliding against silicon
2018
Interfacial phenomena, such as adhesion, friction, and wear, can dominate the performance and reliability of microelectromechanical (MEMS) devices. Here, thin films made by atomic layer deposition (ALD) were tested for their tribological properties. Tribological tests were carried out with silicon counterpart sliding against ALD thin films in order to simulate the contacts occurring in the MEMS devices. The counterpart was sliding in a linear reciprocating motion against the ALD films with the total sliding distances of 5 and 20 m. Al2O3 and TiO2 coatings with different deposition temperatures were investigated in addition to Al2O3-TiO2-nanolaminate, TiN, NbN, TiAlCN, a-C:H [diamondlike car…
How Hand Gestures Contribute to Action Ascription
2019
This article investigates the embodied achievement of intersubjectivity by analyzing depictive gestures that are produced during the final components of the ongoing verbal TCU and extended into the following turn transition space. The depictive gestures in focus elaborate the TCUs by providing additional information on the verbal content of the turn. They may, for example, provide a visual representation of an action that is referred to in the verbal TCU, depict details that are not referred to in talk, or perform bodily enactments that model projected next actions. The analysis demonstrates that timed in this way, the gestures contribute to the multimodal action package that they are part …
Investigating the success of ERP systems in Pakistan : end-users' perspective
2016
The global business environment is changing rapidly, and organisations from developing countries such as Pakistan have to re-engineer their business processes to meet the challenges of increased competition and rising customer expectations. Enterprise resource planning (ERP) systems intend to deliver many benefits, such as business automation, reduced operating costs, accurate demand forecasts, better decision-making and improved customer service. However, organisations adopting ERP systems encounter many types of problems that may lead to failures in processes, expectations and interactions. In order to address these failures, researchers have identified the critical success factors in the…