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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 ...
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 ...
Optical router for optical fiber sensor networks based on a liquid crystal cell
(09/04/2003)
Optical fiber sensor networks are evolving rapidly. They are used because of the inert nature of optical fibers allowing no electromagnetic interference and safe applications in inflammable atmospheres; other relevant ...
SiC: An agent based architecture for preventing and detecting attacks to ubiquitous databases
(2009-07-01)
One of the main attacks to ubiquitous databases is the structure query language (SQL) injection attack, which causes severe damages both in the commercial aspect and in the user’s confidence. This chapter proposes the SiC ...
A Multiagent Solution to Adaptively Classify SOAP Message and Protect against DoS Attack
(11/09/2009)
SOAP messages use XML code, which makes them vulnerable to denial of service (DoS) attacks and puts the availability of web services at risk. This article presents an adaptive solution for dealing with DoS attacks in web ...
A Proposal for Mobile Diabetes Self-control: Towards a Patient Monitoring Framework
(06/10/2009)
In this paper, we present a proposal for Patients’ Mobile Monitoring. This framework enables the definition and generation of profiles, modules and communication structures between each of the measuring devices and the ...
An Adaptive Multi-agent Solution to Detect DoS Attack in SOAP Messages
(2009-07-01)
A SOAP message can be affected by a DoS attack if the incoming message has been either created or modified maliciously. The specifications of existing security standards do not focus on this type of attack. This article ...