Dependability assessment of by-wire control systems using fault injection

This paper is focused on the validation by means of physical fault injection at pin-level of a time-triggered communication controller: the TTP/C versions C1 and C2. The controller is a commercial off-the-shelf product used in the design of by-wire systems. Drive-by-wire and fly-by-wire active safety controls aim to prevent accidents. They are considered to be of critical importance because a serious situation may directly affect user safety. Therefore, dependability assessment is vital in their design. This work was funded by the European project `Fault Injection for TTA¿ and it is divided into two parts. In the first part, there is a verification of the dependability specifications of the TTP communication protocol, based on TTA, in the presence of faults directly induced in communication lines. The second part contains a validation and improvement proposal for the architecture in case of data errors. Such errors are due to faults that occurred during writing (or reading) actions on memory or during data storage.Blanc Clavero, S.; Bonastre Pina, AM.; Gil, P. (2009). Dependability assessment of by-wire control systems using fault injection. Journal of Systems Architecture. 55(2):102-113. doi:10.1016/j.sysarc.2008.09.003S10211355

El carcinoma endometrioide de ovario y tumores afines

Depto. de Salud Pública y Materno - InfantilFac. de MedicinaTRUEProQuestpu

La WIKI en el Aprendizaje de los Estudiantes Universitarios de Ingenierías

[EN] This paper presents an innovation research on promoting self-learning and collaborative writing in engineering university courses. The work is focused on the development of a course Wiki as the leitmotiv of the students activity. Students produce self-contained and reusable Wiki pages within the course framework attending to a suitable work planning. Additionally to help the student on the achievement of curricula, the Wiki is also available to the whole group in the form of self-study material adapted to the students group. Wikis provide teachers with potentially significant opportunities for creating socially engaged tasks that require active student participation and collaboration. Wikis allow students to carry out a collaborative writing stimulating reflection, knowledge sharing, and critical thinking. However, despite the potential capabilities of wikis, there is a need for a systematic process to the construction of this virtual writing space and the use of this tool for upper expectations in a deep real learning approach. The paper also reports on the evaluation of the approach by means of quantitative data collection.Blanc Clavero, S.; Yuste Pérez, P. (2014). La WIKI en el Aprendizaje de los Estudiantes Universitarios de Ingenierías. En Strategies for education in a new context: INNODOCT'14 : International Conference on Innovation, Documentation and Teaching Technologies, held on-line in Valencia, Spain, on 8-9 May, 2014. https://riunet.upv.es/handle/10251/40350. Editorial Universitat Politècnica de València. 791-802. http://hdl.handle.net/10251/82186S79180

Enhancement of fault injection techniques based on the modification of VHDL code

Deep submicrometer devices are expected to be increasingly sensitive to physical faults. For this reason, fault-tolerance mechanisms are more and more required in VLSI circuits. So, validating their dependability is a prior concern in the design process. Fault injection techniques based on the use of hardware description languages offer important advantages with regard to other techniques. First, as this type of techniques can be applied during the design phase of the system, they permit reducing the time-to-market. Second, they present high controllability and reachability. Among the different techniques, those based on the use of saboteurs and mutants are especially attractive due to their high fault modeling capability. However, implementing automatically these techniques in a fault injection tool is difficult. Especially complex are the insertion of saboteurs and the generation of mutants. In this paper, we present new proposals to implement saboteurs and mutants for models in VHDL which are easy-to-automate, and whose philosophy can be generalized to other hardware description languages.Baraza Calvo, JC.; Gracia-Morán, J.; Blanc Clavero, S.; Gil Tomás, DA.; Gil Vicente, PJ. (2008). Enhancement of fault injection techniques based on the modification of VHDL code. IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 16(6):693-706. doi:10.1109/TVLSI.2008.2000254S69370616

An Acoustic Modem Featuring a Multi-Receiver and Ultra-Low Power

[EN] Wireless technology for underwater communication possesses a wide range of potential application, but it is still a relatively unexplored area in many aspects concerning modems physical design. A step towards future deployment of underwater networks is the reduction of power consumption. Therefore, asynchronous wakeup systems need to be integrated within the physical layer design while avoiding the use of additional transducers. This paper offers a practical and generic solution to adapt data reception and transmission together with asynchronous wakeup sub-systems in acoustic underwater modem architectures using a low power and low cost solution. The proposal has been implemented in a real prototype with success.The translation of this paper was funded by the Universitat Politècnica de València, Spain.The authors gratefully acknowledge financial support from the CICYT. ANDREA: Automated Inspection and Remote Performance of Marine Fish Farms (CTM2011-29691-C02-01) and RIDeWAN: Research on Improvement of the Dependability of WSN-based Applications by Developing a Hybrid Monitoring Platform. (TIN2011-28435-C03-01).Sánchez Matías, AM.; Blanc Clavero, S.; Yuste Pérez, P.; Perles Ivars, A.; Serrano Martín, JJ. (2015). An Acoustic Modem Featuring a Multi-Receiver and Ultra-Low Power. Circuits and Systems. 6(1):1-12. https://doi.org/10.4236/cs.2015.61001S1126

Advanced Acoustic Wake-Up System for Underwater Sensor Networks

[EN] This paper presents a low-cost and low-power consumption asynchronous Wake-Up (WU) development to Underwater Wireless Sensor Networks (UWSN). An asynchronous WU offers important advantages for energyaware network polices, however it needs some specific hardware, an optimal configuration of system facilities and the interconnection with a core control unit. This proposed WU implementation has been specifically designed to be used in acoustic underwater modems, able to react to external acoustic stimuli. Both the modem and the Wake-Up system use a unique piezoelectric transducer dissipating, to our knowledge, the lowest power published until now. Moreover, the system is able to detect both simple tones and predefined bit patterns, being able to wake up a network node UWSN individually or even to different nodes at the same time.This work was supported in part by the Spanish Government: Project funds of SABINA CTM2011-29691-C02-01 (SENSORIZACIÓN AMBIENTAL SUBACUÁTICA PARA LA INSPECCIÓN Y MONITORIZACIÓN DE EXPLOTACIONES DE ACUICULTURA MARIAN) AND RIDEWAN TIN2011-28435-C03-01 (INVESTIGACIÓN EN LA MEJORA DE LA CONFIABILIDAD DE APLICACIONES BASADAS EN WSN MEDIANTE EL DESARROLLO DE UNA PLATAFORMA HIBRIDA DE MONITORIZACIÓN)Sánchez Matías, AM.; Blanc Clavero, S.; Yuste Pérez, P.; Piqueras Gozalbes, IR.; Serrano Martín, JJ. (2012). Advanced Acoustic Wake-Up System for Underwater Sensor Networks. Communications in information science and management engineering. 2(2):1-10. http://hdl.handle.net/10251/36744S1102

Estudio del comportamiento en fases tempranas de somaclones seleccionados de bajo porte en el híbrido de plátano FHIA-21

Banana and plantain (Musa spp.) represent a main crop and a tropical food product on a world level. The present study was carried out in the acclimatization phase with the objective of proving the effectiveness of the selection realized for the height of the plant on plant material that was treated with physical mutagens agent (gamma radiation Co60 source) to induce variability. The treatments used were five (5) somaclons selected previously in the fields with low height, which were multiplied in vitro and were adapted during 45 days, evaluating in this moment various qualitative and quantitative characters. These studies permit the height of the plant as well as the length and width of the leaf to be used as plant selection markers of low height in the early phase in the plantain hybrid FHIA-21.Key words: early detection, musa spp, black sigatokaEl banano y el plátano (Musa spp) representan el principal cultivo y producto alimentario tropical a escala mundial. El presente estudio se llevó a cabo en la fase de aclimatización con el objetivo de recomprobar la efectividad de la selección realizada para la altura de la planta, en material vegetal que había sido tratado con agentes mutagénicos físicos (radiaciones gamma fuente Co 60), para inducir la variabilidad. Los tratamientos empleados fueron cinco somaclones seleccionados previamente en el campo con bajo porte, los que se multiplicaron in vitro y se adaptaron durante cuarenticinco días, evaluándose en este momento, varios caracteres cualitativos y cuantitativos. Estos estudios permitieron utilizar como marcadores de selección de plantas de porte bajo, del híbrido FHIA-21 en fases tempranas, la altura de la planta, así como el largo y el ancho de la hoja.Palabras clave: detección temprana, musa spp, sigatoka negr