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Demultiplexers for ultranarrow channel spacing based on Mach-Zehnders and ring resonators
(09/01/2004)
Novel demultiplexer configurations based on concatenated Mach-Zehnders and a ring resonator are presented. These new devices exhibit high channel isolation, flexibility, no loss, and megahertz-adjustable full width at half ...
On the Design and Development of Climbing and Walking Robots for the Maritime Industries
(2005-06-27)
Modern robotic systems are increasingly powerful in terms of sensor fusion and mobility. Present technological progress allows advanced robots to cope progressively much better also with complex environments such as those ...
Estimation Aveugle Itérative par Filtrage H∞ des Décalages Doppler d’un Système OFDMA Entrelacé en Liaison Montante
(2009-07-01)
Il s'agit d'estimer et de compenser de multiples décalages Doppler dans un contexte multi-(porteuses, utilisateurs) OFDMA en liaison montante. Pour cela, nous proposons une architecture de réception itérative capable ...
Novel tunable optical filter employing a fiber loop mirror for synthesis applications in WDM
(11/12/2001)
A novel optical filter employing a fiber loop mirror within an amplified ring resonator is presented. The fiber loop mirror allows tuning by changing the coupling factor of a coupler. The device can be used as a building ...
Services through NFC technology in AmI Environment
(11/24/2008)
The use of Near Field Communications technology in AmI environments is a further step in achieving our particular proposal of the vision of Ubiquitous Computing and Ambient Intelligence. This work explores the single use ...
An Attack Detection Mechanism Based on a Distributed Hierarchical Multi-agent Architecture for Protecting Databases
(2009-07-01)
This paper presents an innovative approach to detect and classify SQL injection attacks. The existing approaches are centralized while this proposal is based on a distributed hierarchical architecture to provide a robust ...
Synthesis of Optical Filters Using Sagnac Interferometer in Ring Resonator
(11/12/2007)
We propose a new synthesis method for the implementation of infinite impulse response filters, using a Sagnac interferometer within a ring resonator. This structure permits the synthesis of second-order optical functions ...
Estudio experimental de la ductibilidad de soportes de hormigón convencional sometidos a compresión y carga lateral cíclica
(2009-12)
Los soportes de hormigón armado que forman parte de una estructura sismorresistentes en lugares donde existen mayores riesgos de sismo, deben diseñarse con el objetivo de asegurar un adecuado comportamiento en cuanto a ...
A survey and field study on the present state and changes for quality management in Japanesse manufacturing companies
(2009-04-15)
The level of quality management has recently been said to be deteriorating among top-rated, Japanese manufacturers. The manufacturers seem to have shifted their priorities from achieving high quality to responding to rapid ...
Seismic Design of Multi-story Buildings with Metallic Structural Fuses
(2006-06-28)
Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for ...