Ara es mostren els items 3829-3848 de 86042

  • Active control of aircraft fly-over sound transmission through an open window 

    Pàmies Gómez, Teresa; Romeu Garbí, Jordi; Genesca Francitorra, Meritxell; Arcos Villamarín, Robert (2014-04-13)
    Article
    Accés restringit per política de l'editorial
    This paper presents an experimental work on active control of sound transmission through a restricted opening bottom hinged window. The main goal of the work is to demonstrate the feasibility of the active technique to ...
  • Active control of hysteretic base-isolated structures via delayed signals 

    Acho Zuppa, Leonardo; Luo, Ningsu; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2010)
    Comunicació de congrés
    Accés obert
  • Active control of sound transmission through an aperture in a thin wall 

    Magnusson Morer, Ingrid; Pàmies Gómez, Teresa; Romeu Garbí, Jordi (2014)
    Text en actes de congrés
    Accés obert
    The reduction on sound transmission through an aperture by active means is theoretically investigated. The primary field is composed by a plane wave that arrives at a rectangular aperture placed in an infinite rigid thin ...
  • Active Control of Surface Plasmon Waveguides with a Phase Change Material 

    Rudé, Miquel; Simpson, Robert E.; Quidant, Romain; Pruneri, Valerio; Renger, Jan (2015-05-25)
    Article
    Accés obert
    The ability to manipulate light propagation at the nanoscale is of vital importance for future integrated photonic circuits. In this work we exploit the high contrast in the optical properties of the phase change material ...
  • Active control of surface plasmons in hybrid nanostructures 

    Randhawa, Sukanya (Universitat Politècnica de Catalunya, 2012-12-04)
    Tesi
    Accés obert
    Plasmonics nanostructures are becoming remarkably important as tools towards manipulating photons at the nanoscale. They are poised to revolutionize a wide range of applications ranging from integrated optical circuits, ...
  • Active control of the surface potential of nanostructured layers 

    Domínguez Pumar, Manuel; Kowalski, Lukasz; Llobet, E.; Calavia, Raül (2016-01-21)
    Article
    Accés obert
    The objective of this letter is to show the first results obtained with a control designed to keep the average surface potential of a nanostructured layerconstant. This condition is equivalent to keeping constant the ...
  • Active control of vibrations on flat plates for loudspeakers 

    Minguell Armengol, Joel (Universitat Politècnica de Catalunya / École Nationale Supérieure de Techniques Avancées, 2009)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    Dans la recherche de nouveaux modes de diffusion sonore, on peut être amené à utiliser des structures diverses, allant du cone utilisé dans les haut-parleurs classiques à d'autres formes plus spécifiques. Ce stage propose ...
  • Active current control in wind power plants during grid faults 

    Martínez Navarro, Jorge; Kjaer, P. C.; Rodríguez Cortés, Pedro; Teodorescu, Remus (2010-11)
    Article
    Accés restringit per política de l'editorial
    Modern wind power plants are required and designed to ride through faults in electrical networks, subject to fault clearing. Wind turbine fault current contribution is required from most countries with a high amount of ...
  • Active damping based on Ackermann's formula for a three-phase voltage source inverter with LCL filter 

    Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Morales López, Javier; Momeneh, Arash; Miret Tomàs, Jaume; Torres Martínez, Javier (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents an active damping method in natural frame for a three-phase voltage source inverter with LCL filter. The proposed method is based on the pole placement technique via Ackermann's formula. This approach ...
  • Active damping control for a three phase grid-connected inverter using sliding mode control 

    Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Camacho Santiago, Antonio; Matas Alcalá, José; Castilla Fernández, Miguel; Miret Tomàs, Jaume (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper proposes a ne w active damping method based on virtual resistors for three-phase grid connected voltage source inverters (VSI) with LCL filter. The use of this filters is a standard solution to provide the ...
  • Active flow control on laminar flow over a backward facing step 

    Mushyam, Aditya; Bergadà Granyó, Josep Maria (Institute of Physics (IOP), 2015-09-21)
    Article
    Accés obert
    In the present study, two dimensional flow over a backward-facing step in laminar flow regime with application of active flow control (AFC) technique is analysed. The aim of the present work is to gauge the effectiveness ...
  • Active inductor-based tunable impedance matching network for RF power amplifier application 

    Saberkari, Alireza; Ziabakhsh, Saman; Martínez García, Herminio; Alarcón Cot, Eduardo José (2015-08)
    Article
    Accés obert
    This paper presents the use of a new structure of active inductor named cascoded flipped-active inductor (CASFAI) in a T-type high-pass tunable output matching network of a class-E RF power amplifier (RFPA) to control the ...
  • Active learning and autonomous learning: an educational experience 

    Gómez Soberón, José Manuel Vicente; Gómez Soberón, M. Consolació; Gómez Soberón, Alberto (Active Learning for Engineering Education (ALE), 2009)
    Text en actes de congrés
    Accés obert
    The obtained experience in the active and the autonomous learning tasks execution in the teaching of the subject: Reinforced Concrete Structures and Devices Construction, of the career of Technical Architecture by the ...
  • Active learning in learning communities: toward an autonomous and shared learning 

    Parada, Natalia; Gutierrez, Angel (Active Learning for Engineering Education (ALE), 2009)
    Text en actes de congrés
    Accés obert
    Starting with our work on organizational redesign in different Colombian organizations, we have advanced in the concepts of Learning Communities, Shared and Permanent Learning, Flexible Organizational Structure, Participative ...
  • Active learning in Operations Management: interactive multimedia software for teaching JIT/Lean Production 

    Medina López, Carmen; Alfalla Luque, Rafaela; Arenas Márquez, Francisco (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2011-04)
    Article
    Accés obert
    Purpose: Information & Communication Technologies (ICT) can be a fundamental aid for the design of new teaching methods that better adapt to the framework of the European Higher Education Area. In this context, this study ...
  • Active learning of manipulation sequences 

    Martínez Martínez, David; Alenyà Ribas, Guillem; Jimenez Schlegl, Pablo; Torras, Carme; Rossmann, Jürgen; Wantia, Nils; Eren Erdal, Aksoy; Haller, Simon; Piater, Justus (2014)
    Text en actes de congrés
    Accés obert
    We describe a system allowing a robot to learn goal-directed manipulation sequences such as steps of an assembly task. Learning is based on a free mix of exploration and instruction by an external teacher, and may be active ...
  • Active learning strategies applied to experimental research works conducted by foreign students in food engineering studies 

    Achaerandio Puente, María Isabel; Carbó Moliner, Rosa (Active Learning for Engineering Education (ALE), 2009)
    Text en actes de congrés
    Accés obert
    Foreign students that come for a short stay usually need a cultural adaptation process due mainly to lacks in language skills and cultural differences. These facts involve that some alternative methods have to be developed ...
  • Active measurement of memory resource consumption 

    Casas, Marc; Bronevetsky, Greg (IEEE, 2014)
    Text en actes de congrés
    Accés obert
    Hierarchical memory is a cornerstone of modern hardware design because it provides high memory performance and capacity at a low cost. However, the use of multiple levels of memory and complex cache management policies ...
  • Active Measurement of the Impact of Network Switch Utilization on Application Performance 

    Casas, Marc; Bronevetsky, Greg (IEEE, 2014)
    Text en actes de congrés
    Accés obert
    Inter-node networks are a key capability of High-Performance Computing (HPC) systems that differentiates them from less capable classes of machines. However, in spite of their very high performance, the increasing ...
  • Active microwave computed brain tomography: The response to a challenge 

    Broquetas Ibars, Antoni; Jofre Roca, Lluís (1991-02)
    Article
    Accés restringit per política de l'editorial
    The potential application of active microwave techniques to brain imaging is studied by numerical simulations and experimentally using a recently developed cylindrical microwave scanner. The potential advantages and ...