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Journal Cover ADCAIJ : Advances in Distributed Computing and Artificial Intelligence Journal
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  This is an Open Access Journal Open Access journal
     ISSN (Print) 2255-2863
     Published by Universidad de Salamanca Homepage  [2 journals]
  • Odor Classification using Agent Technology

    • Authors: Sigeru OMATU, Tatsuyuki WADA, Pablo CHAMOSO
      Abstract: In order to measure and classify odors, Quartz Crystal Microbalance (QCM) can be used. In the present study, seven QCM sensors and three different odors are used. The system has been developed as a virtual organization of agents using an agent platform called PANGEA (Platform for Automatic coNstruction of orGanizations of intElligent Agents). This is a platform for developing open multi-agent systems, specifically those including organizational aspects. The main reason for the use of agents is the scalability of the platform, i.e. the way in which it models the services. The system models functionalities as services inside the agents, or as Service Oriented Approach (SOA) architecture compliant services using Web Services. This way the adaptation of the odor classification systems with new algorithms, tools and classification techniques is allowed.
      PubDate: 2014-03-10
      Issue No: Vol. 1 (2014)
  • Index

    • Authors: Antonio Juan Sánchez
      PubDate: 2014-03-10
      Issue No: Vol. 1 (2014)
  • Control Prosody using Multi-Agent System

    • Authors: Kenji MATSUI, Kenta KIMURA, Alberto PÉREZ
      Abstract: Persons who have undergone a laryngectomy have a few options to partially restore speech but no completely satisfactory device. Even though the use of an electrolarynx (EL) is the easiest way for a patient to produce speech, it does not produce a natural tone and appearance is far from normal. Because of that and the fact that none of them are hands-free, the feasibility of using a motion sensor to replace a conventional EL user interface has been explored. A mobile device motion sensor with multi-agent platform has been used to investigate on/off and pitch frequency control capability. A very small battery operated ARM-based control unit has also been developed to evaluate the motion sensor based user-interface. This control unit is placed on the wrist and the vibration device against the throat using support bandage. Two different conversion methods were used for the forearm tilt angle to pitch frequency conversion: linear mapping method and F0 template-based method A perceptual evaluation has been performed with two well-trained normal speakers and ten subjects. The results of the evaluation study showed that both methods are able to produce better speech quality in terms of the naturalness.
      PubDate: 2014-03-10
      Issue No: Vol. 1 (2014)
  • Online Adapting the Magnitude of Target Birth Intensity in the PHD Filter

    • Authors: Tiancheng LI, Shudong SUN
      Abstract: Capturing new targets that spontaneously appear in the multi-target tracking (MTT) scene requires a formation of TBI (target birth intensity) item in the PHD (probability hypothesis density) equations. That is, in the particle implementation of the PHD filter, a number of new particles with a certain weight mass are added to the underlying particle set during the propagation of the PHD. In general, TBI is assumed to hold for the same magnitude at all scans. This ad-hoc option is simple but is not always desirable. In this paper, a measurement-driven adaptive mechanism is proposed that determines the magnitude of TBI in real time based on the estimated number of new-born targets, which is calculated by employing the newest measurements. Simulation demonstration of the particle PHD filter has been provided.
      PubDate: 2014-03-10
      Issue No: Vol. 1 (2014)
  • AmICog – mobile technologies to assist people with cognitive
           disabilities in the work place

    • Authors: Javier GÓMEZ, Xavier ALAMÁN, Germán MONTORO, Juan C. TORRADO, Adalberto PLAZA
      Abstract: This paper presents the system AmICog, designed specifically to assist people with cognitive disabilities in their workplaces. To do that we employ mobile devices for two different purposes: on the one hand, to show interactive guides adapted to the user, the task and the user’s context. On the other hand, to locate and provide directions in indoors environments.
      PubDate: 2014-03-07
      Issue No: Vol. 1 (2014)
  • Intelligent Devices in Rural Wireless Networks

    • Authors: Daniel FUENTES, Rosalía LAZA, Antonio PEREIRA
      Abstract: The rural wireless networks are increasingly in demand by associations and autarchies to expand Internet access in this type of areas. The problem of such solutions centers not only in network deployment and its maintenance, but also in the equipment installation on clients, which always has big costs. This installation and configuration must be performed by a technician on site, so that the equipment can be integrated in the infrastructure. To try to mitigate this problem, it is presented a solution that allows the clients to install, with transparency, the device at home, reducing not only the cost for the management entity but also for the clients. This way, for info-excluded people or with new technology low experience level, it is the user that integrates himself in the network, making him part of the process, fostering the network usage.
      In this article are specified not only the system architecture but also the way that it works and how it obtains the desirable result. The tests made to the solution show the quickness, reliability and autonomy in the execution of the tasks, making it a benefit for rural wireless networks.
      This solution, by its robustness and simplicity, allowed an uptake to the IT by people who never thought to do it, namely an advanced age group (elderly) who want to join the world of the new technologies
      PubDate: 2014-03-07
      Issue No: Vol. 1 (2014)
  • User-centric cognitive assessment. Evaluation of attention in special
           working centres: from paper to Kinect

    • Authors: Anna VILARO, Pilar ORERO
      Abstract: PROLOG project aims to provide a complementary ICT tool for the assessment of cognitive skills of mentally disabled working people. The project is developed by Centre d’Accessibilitat i Intel·ligència Ambiental de Catalunya (CAiAC), Indra, Fundación Adecco and PRODIS, and is part of Cátedra INDRA de Tecnologías Accesibles.
      The project provides a platform to evaluate, in a quick and personalized way, the attentional performance of users through specific tasks grounded in existing psychological tests. Interaction with the tests is done by Kinect technology. Also a platform execution logs users in different tests over time in order to detect possible cognitive impairments. The platform records the worker’s performance on various tasks and presents the evolution over time in order to detect possible cognitive impairment. This paper details the first phase of the project corresponding to the design of the tests.
      PubDate: 2014-03-06
      Issue No: Vol. 1 (2014)
  • Optimization of the virtual mouse HeadMouse to foster its classroom use by
           children with physical disabilities

    • Authors: Merce TEIXIDO, Tomás PALLEJA, Marcel TRESANCHEZ, Davinia FONT, Javier MORENO, Alicia FERNÁNDEZ, Jordi PALACÍN, Carlos REBATE
      Abstract: This paper presents the optimization of a virtual mouse called HeadMouse in order to foster its classroom use by children with physical disabilities. HeadMouse is an absolute virtual mouse that converts head movements in cursor displacement and facial gestures in click actions. The virtual mouse combines different image processing algorithms: face detection, pattern matching and optical flow in order to emulate the behaviour of a conventional computer mouse. The original implementation of HeadMouse requires large computational power and this paper proposes specific optimizations in order to enable its use by children with disabilities in standard low cost classroom computers.
      PubDate: 2013-12-12
      Issue No: Vol. 1 (2013)
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