Recursos de colección

Archivo Digital UPM (107.543 recursos)

This is an institutional repository providing access to the research output of the institution. Primarily contains thesis.

Tipo de documento = Ponencia en Congreso o Jornada

Mostrando recursos 1 - 20 de 7.885

  1. Fast facial expression recognition for emotion awareness disposal

    Eckert, Martina; Gil Gaitán, Almudena; Zapatero Olmedillo, Diego; Meneses Chaus, Juan Manuel; Martínez Ortega, José Fernán
    This paper presents a simple and fast expression recognition algorithm aimed at running in a secondary plane to provide emotion awareness for primary applications as e.g. exergames, in real time. The algorithm is based on the extraction of 19 facial landmarks which are used to detect some of the Action Units (AUs) defined in the Facial Action Coding System (FACS) and a newly created one. In addition, the new concept of Combined Action Units (CAUs) is presented. Those are grouped AUs which are detected as a unit. The applied emotion classification is based on logical rules, no learning is involved....

  2. A modular middleware approach for exergaming

    Eckert, Martina; Gómez Martinho, Ignacio; Meneses Chaus, Juan Manuel; Martínez Ortega, José Fernán
    This paper presents the design of a new exergaming environment consisting of a modular middleware tool aimed at serving for intelligent adventure games. The middleware provides a modular and user-adaptive interface for data exchange between different devices (to date it supports a motion capture camera, a mobile phone, and a VR headset) and Blender. The target group is formed by young people between ages 6 to 26 with different physical diseases (muscular dystrophy, cerebral palsy, accidents, etc.). The gaming environment focuses especially on user awareness, immersion, and adaptability to special needs.

  3. MoKey - A motion based keyboard interpreter

    Eckert, Martina; López García, Marcos; Lázaro Basanta, Carlos; Meneses Chaus, Juan Manuel; Martínez Ortega, José Fernán
    In this paper the authors present a new middleware for mapping gestures, obtained by a motion sensing camera device, to key events which are consumed by a standard off-the-shelf application. The aim is twofold: accessibility for users which are not able to use the keyboard because of physical impairments and the use of standard games for doing physical exercises. Hereby, special attention is laid on the adaptability to user requirements and easiness of configuration for the user himself and non-expert assistants. The actual state of our system is compared to similar proposals in terms of usability and performance, finally future...

  4. A multi functional plug-in for exergames

    Eckert, Martina; Gómez Martinho, Ignacio; Meneses Chaus, Juan Manuel; Martínez Ortega, José Fernán
    This paper describes the development of a software complement for Blender (a freely available animation software) which allows to insert motion data obtained from a motion capture camera device. The main target is to provide Blender with a tool to develop exergames, i.e. serious games for performing physical exercises, which are fully adaptive to the user?s needs and capabilities, especially addressing chronical patients or handicapped. The plugin incorporates both: motion control and recording, allowing to store user movements. Transmission is realized via the OSC (Open Sound Control) protocol. The tool is still under development, here a first version is presented...

  5. Non-cooperative target identification based on singular value decomposition

    Hernán Vega, Olga; López Rodríguez, Patricia; Escot Bocanegra, David; Fernández Recio, Raúl; Bravo Muñoz, Ignacio
    Non-Cooperative Target Identification based on High Resolution Range Profiles is a key research domain in the Defense industry. In this paper a method based on the application of Singular Value Decomposition to a matrix of range profiles is defined. The decomposition is applied to reduce dimensionality and to accomplish recognition in the transformed domain. So as to confirm the feasibility of the methodology, identification experiments of profiles coming from electromagnetic simulations are conducted, revealing promising results.

  6. Integración del laboratorio remoto eLab3D en títulos de grado de Ingeniería

    López Gregorio, Sergio; Carpeño Ruiz, Antonio; Arriaga García de Andoain, Jesús María
    La evolución de los laboratorios remotos ha sufrido un punto de inflexión al incorporarse en su diseño tecnologías basadas en entornos virtuales de aprendizaje. Los nuevos laboratorios remotos que han surgido ofrecen prestaciones educativas que permiten la adquisición de competencias prácticas similares a las que se alcanzan en los laboratorios presenciales. Este trabajo ofrece una aportación orientada a demostrar que es factible integrar el uso de estos nuevos recursos en los estudios de grado del área de la ingeniería electrónica. Se ha utilizado el laboratorio remoto eLab3D que permite realizar experimentos reales en el ámbito de la electrónica utilizando Internet....

  7. Language learning through cultural exchanges on site

    Fernández Pérez, María Trinidad; Santiago López, Joaquín
    The Spanish educational system has been engaged in a far-fetching language program that promotes a bilingual training for a high number of students in most primary and secondary state schools. At tertiary level, most universities in Spain, among them the Universidad Politécnica de Madrid-Spain (UPM, require a B2 certificate (CEFR) to enroll in the compulsory subject “English for Professional and Academic Communication” . Even though students are supposed to have achieved a B2 level on completing their secondary education, experience over the last years shows that they are far from this high-intermediate level. Fully aware of this problem the UPM is...

  8. Performance comparison of SVD- and GMD-assisted MIMO systems

    Ahrens, Andreas; Benavente Peces, César; Aboltins, Arturs
    Singular-value decomposition (SVD)-based multiple-input multiple-output (MIMO) systems have attracted a lot of attention in the wireless community where the whole MIMO channel is decomposed into a number of unequally weighted independent single-input single-output (SISO) channels. The unequal weighting of the SISO channels has led to intensive research on bit- and power allocation even in MIMO channel situations with poor scattering conditions identified as the antenna correlation effect. In this situation, the unequal weighting of the SISO channels becomes even much stronger. In comparison to the SVD-assisted MIMO transmission, geometric mean decomposition (GMD)-based MIMO systems are able to compensate for the...

  9. A Cooperative Decison Support System for Children's Neurodevelopment Monitoring.

    Martín Ruiz, María Luisa; Valero Duboy, Miguel Ángel; Gómez Oliva, Ana; Torcal Loriente, Carmen
    Decision Support Systems can enhance e-Health monitoring and IoT scenarios on the early detection of neurodevelopmental disorders in children. Thus, Ambient Intelligence could support innovative application domains like motor or cognitive impairments? detection at the home environment. The paper describes the design of an innovative cooperative system (Galatea) that supports the refinement process of a Knowledge Base expressed as an OWL ontology. The ontology supports decision-making process and is the core of: (1) a Web-Based Smart System aimed to enhance the screening of language disorders at medical centers and schools by fostering the identification of a developmental disorders before 4...

  10. Learning English is fun! Increasing motivation through video games

    Osma Ruiz, Víctor José; Saenz Lechón, Nicolás; Gutiérrez Arriola, Juana María; Argüelles Álvarez, Irina; Fraile Muñoz, Rubén; Marcano Ganzo, Roberto
    In this paper we present a study made with 16 university students with different levels of proficiency in English, who were divided into two groups: those with a basic level (B1 or lower) and those who had an advanced one (B2 or higher). These two groups had the opportunity to get to know and interact with a serious game developed in the ?Universidad Politécnica de Madrid? with the aim of helping in the teaching-learning process of English as a foreign language. Before and after the interaction, all students were interviewed on various aspects related to the English learning process. Although...

  11. Shape memory alloy-based high phase order motor

    Rossi, Claudio; Yuan, Zongjian; Zhang, Chao; Barrientos Cruz, Antonio; Coral Cuellar, William
    In this paper, we present our current work in the design and characterisation of a new shape memory alloy (SMA)-based High Phase Order Motor (HPOM). The motor can be used either in stepping mode or in servo mode of operation. Each phase of the motor consists of an SMA wire with a spring. The principle of operation of the HPOM is presented. In its operation the motor resembles a stepper motor though the actuation principles are different and hence has been characterised similar to a stepper motor.This motor can be actuated in either direction depending on which SMA is actuated,...

  12. Virtual-work-based optimization design on compliant transmission mechanism for flapping-wing aerial vehicles

    Zhang, Chao; Rossi, Claudio; He, Wei; Colorado Montaño, Julián
    This paper presents a method for analyzing and optimizing the design of a compliant transmission mechanism for a flapping-wing aerial vehicle. Its purpose is of minimizing the peak input torque required from a driving motor. In order to maintain the stability of flight, minimizing the peak input torque is necessary. To this purpose, first, a pseudo-rigid-body model was built and a kinematic analysis of the model was carried out. Next, the aerodynamic torque generated by flapping wings was calculated. Then, the input torque required to keep the flight of the vehicle was solved by using the principle of virtual work....

  13. Nueva técnica de modulación de excitación para sistemas EER

    Tena Ramos, David; Ortega González, Francisco Javier; Patiño Gómez, Moises; Pardo Martín, José Manuel
    This paper shows a novel drive modulation technique applied to a high power, high efficiency, linear Envelope Elimination and Restoration (EER) amplifier for L-Band. It comprises a mixed-mode suboptimum Class-E / Class-A wideband RF amplifier based on a dual GaN HEMT for RF carrier amplification and a high efficiency, high switching frequency, multi-phase, buck power converter based on Silicon LDMOS transistors to work as a modulator (or envelope amplifier). The linearity and power gain for this EER amplifier is improved by means of a new digital drive modulation technique and digital predistortion (DPD) to achieve linearity performances equivalent or better...

  14. Firefighter and victims protecting solution based on wireless body area network nodes

    Sanchez Alcón, Jose Antonio; Castillejo Parrilla, Pedro; Martinez Ortega, Jose Fernan; Lopez Santidrian, M. Lourdes
    Interconnectivity between Web systems and sensor networks is used to provide smart services for the Internet of Things. These services are based on data collection and processing to obtain useful information about the supervised environment. With this information it is possible to provide smart services, but some of them must be considered as protected by the legislation regarding privacy of personal data. In order to face this issue, security and privacy mechanisms must be used. So as to deal with the limited resources in sensor networks, these mechanisms must be as lightweight as possible to preserve the enough Quality of...

  15. Communication range dynamics using an energy saving self-adaptive transmission power controller in a wireless sensor network

    Lucas Martínez, Néstor; Martinez Ortega, José Fernán; Hernandez Diaz, Vicente; Toro Matamoros, Raúl del
    The deployment of the nodes in a Wireless Sensors and Actuators Network (WSAN) is typically restricted by the sensing and acting coverage. This implies that the locations of the nodes may be, and usually are, not optimal from the point of view of the radio communication. And also when the transmission power is tuned for those locations, there are other unpredictable factors that can cause connectivity failures, like interferences, signal fading due to passing objects, and of course, radio irregularities. A control based self-adaptive system is a typical solution to improve the energy consumption while keeping a good connectivity. In...

  16. Diseño de un regulador no lineal por bloques para el sistema glucosa-insulina utilizando redes neuronales de alto orden

    Orozco López, Onofré; Rodríguez Herrero, Agustín; Castañeda Hernández, Carlos Eduardo; García Sáez, Gema; Hernando Pérez, María Elena
    En este trabajo se propone un algoritmo de control en lazo cerrado para el control automático de la diabetes tipo 1 basado en la identificación de sistemas no lineales con redes neuronales artificiales y mediante la regulación basada en la forma controlable no lineal por bloques. Como paciente virtual se utiliza el modelo de Hovorka al que se conecta el algoritmo de control utilizando prealimentación procedente de la terapia prescrita con insulina y un módulo de seguridad para evitar las hipoglucemias. El identificador neuronal es entrenado en línea con un filtro de Kalman extendido con una función de activación definida...

  17. Using end-to-end data encryption to secure SIP device configuration

    Chen, Xudong; Fan, Wenjun
    Security between the endpoints is an important requirement for network transmission. One existing solution of End-to-End security is based on the certificate of the third-party enterprise such as the authorization from ISP. And the other methods usually established a virtual private tunnel between the two endpoints. Considering the SIP device configuration basically used tftp protocol to transmit the configuration file, we proposed a free End-to-End security scheme using Application Gateway and data encryption to secure this transmission process. In this paper, Application Gateway used FastCGI programming to protect the HTTP server from attacking. On the other hand, the file encryption...

  18. Three-state disk model for high quality and energy efficient streaming media servers

    Du, Zhihui; Fan, Wenjun; Chai, Yunpeng
    Energy conservation and emission reduction is an increasingly prominent and global issue in green computing. Among the various components of a streaming media server, the storage system is the biggest power consumer. In this paper, a Three-State Disk Model (3SDM) is proposed to conserve energy for streaming media servers without losing quality. According to the load threshold, the disks are dynamically divided into three states: overload, normal and standby. With the requests arriving and departing, the disk state transition among these three states. The purpose of 3SDM is to skew the load among the disks to achieve high quality and energy efficiency...

  19. Variabilidade espacial da profundidade de sementeira de uma cultura de milho semeada em sementeira direta no Alentejo

    Conceiçao, Luis Alcino; Barreiro Elorza, Pilar; Dias, Susana; Garrido Izard, Miguel; Valero Ubierna, Constantino
    No decorrer dos anos de 2010, 2011 e 2012 realizaram-se 3 ensaios não controlados em 3 explorações agrícolas do Alentejo com o objetivo de estudar a variabilidade espacial da profundidade de sementeira em culturas de milho feitas segundo a técnica de sementeira direta e utilizando-se semeadores de sementeira direta ditos convencionais, isto é sem dispositivos de controlo dinâmico de profundidade.

  20. Crop row detection in maize for developing navigation algorithms under changing plant growth stages

    Reiser, David; Garrido Izard, Miguel; Vázquez Arellano, Manuel; Griepentrog, Hans W.; Paraforos, Dimitris S.
    To develop robust algorithms for agricultural navigation, different growth stages of the plants have to be considered. For fast validation and repeatable testing of algorithms, a dataset was recorded by a 4 wheeled robot, equipped with a frame of different sensors and was guided through maize rows. The robot position was simultaneously tracked by a total station, to get precise reference of the sensor data. The plant position and parameters were measured for comparing the sensor values. A horizontal laser scanner and corresponding total station data was recorded for 7 times over a period of 6 weeks. It was used...

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