Catholic University of Asuncion

Asunción, Paraguay

Catholic University of Asuncion

Asunción, Paraguay
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Ruffinelli D.,Catholic University of Asuncion | Baran B.,Catholic University of Asuncion | Baran B.,National University of Asunción
Quantum Information Processing | Year: 2017

Several current implementations of quantum circuits rely on the linear nearest neighbor restriction, which only allows interaction between adjacent qubits. Most methods that address the process of converting a generic circuit to an equivalent circuit which satisfies this restriction, minimize the number of additional SWAP gates required by this process. Moreover, most methods which address this problem are designed for 1D circuits. Considering the new and promising proposals for 2D quantum circuits, what we propose is a new perspective on this problem, namely that it can be seen as a multiobjective optimization problem. To test our hypothesis, we developed a multiobjective evolutionary algorithm that solves this problem by considering two objectives: minimizing the size of the 2D grid where the circuit is placed, and minimizing the number of additional SWAP gates. Of the methods designed for 2D circuits, only one considers different grid sizes which are much larger than strictly necessary. Consequently, our algorithm makes considerations which other methods do not make, since it naturally finds the grid which requires fewer SWAP gates for the circuit conversion, whether it is one-dimensional or two-dimensional. Our experimental results indicate that allowing a larger grid size results in fewer additional SWAP gates in about 73% of the tested circuits. Additionally, the average improvement we found when using larger grid sizes is about 30%, while the best improvement over using the smallest possible grid is 63.8%. © 2017, Springer Science+Business Media, LLC.


Guevara J.,Catholic University of Asuncion | Barrero F.,University of Seville | Vargas E.,Catholic University of Asuncion | Becerra J.,University of Seville | Toral S.,University of Seville
IET Intelligent Transport Systems | Year: 2012

The Intelligent Transportation Systems (ITS) concept has been recently introduced to define modern embedded systems with enhanced digital connectivity, combining people, vehicles and public infrastructure. The smart transducer concept has been also established by the IEEE 1451 Standard to simplify the scalability of networked electronic equipments. Both of them, smart transducers and ITS, have become a reality in the last decade. This study describes the design and implementation of an environmental wireless sensor network that characterises air quality in Asuncion, Paraguay. Mobile sensor devices in public transport vehicles provide an effective mechanism to develop an efficient solution for this characterisation. The development of the sensor network is presented and experimental results obtained for the characterisation of the proposed environmental monitoring system are provided. © 2012 The Institution of Engineering and Technology.


Guevara J.,Catholic University of Asuncion | Vargas E.,Catholic University of Asuncion | Barrero F.,University of Seville | Toral S.,University of Seville
IEEE Conference on Intelligent Transportation Systems, Proceedings, ITSC | Year: 2010

The widespread use of electronic equipments and their integration into the vehicular system have become a necessity in the automobile industry. The Smart Transducer concept -along with IEEE Standard 1451- improves the scalability of these networked electronic devices into a vehicular system. This paper describes the design and implementation of a real-time environmental wireless sensor network that characterizes air quality in Asuncion, Paraguay. Mobile sensor devices in public transport vehicles provide an effective mechanism to develop an efficient solution for this characterization. The development of the sensor network is presented, and experimental results obtained for the characterization of the proposed environmental monitoring system are provided. ©2010 IEEE.


Emmett S.D.,Johns Hopkins University | Tucci D.L.,Duke University | Bento R.F.,University of Sao Paulo | Garcia J.M.,Santa Fe of Bogota Foundation | And 14 more authors.
Otology and Neurotology | Year: 2016

Hypothesis: Cochlear implantation (CI) and deaf education are cost effective management strategies of childhood profound sensorineural hearing loss in Latin America. Background: CI has been widely established as cost effective in North America and Europe and is considered standard of care in those regions, yet cost effectiveness in other economic environments has not been explored. With 80% of the global hearing loss burden existing in low- and middle-income countries, developing cost effective management strategies in these settings is essential. This analysis represents the continuation of a global assessment of CI and deaf education cost effectiveness. Methods: Brazil, Colombia, Ecuador, Guatemala, Paraguay, Trinidad and Tobago, and Venezuela participated in the study. A Disability Adjusted Life Years model was applied with 3% discounting and 10-year length of analysis. Experts from each country supplied cost estimates from known costs and published data. Sensitivity analysis was performed to evaluate the effect of device cost, professional salaries, annual number of implants, and probability of device failure. Cost effectiveness was determined using the World Health Organization standard of cost effectiveness ratio/gross domestic product per capita (CER/GDP)<3. Results: Deaf education was very cost effective in all countries (CER/GDP 0.07-0.93). CI was cost effective in all countries (CER/GDP 0.69-2.96), with borderline cost effectiveness in the Guatemalan sensitivity analysis (Max CER/GDP 3.21). Conclusion: Both cochlear implantation and deaf education are widely cost effective in Latin America. In the lower-middle income economy of Guatemala, implant cost may have a larger impact. GDP is less influential in the middle- and high-income economies included in this study. Copyright © 2016 Otology & Neurotology, Inc.


Barrero F.,University of Seville | Guevara J.A.,Catholic University of Asuncion | Vargas E.,Catholic University of Asuncion | Toral S.,University of Seville | Vargas M.,University of Seville
Computer Standards and Interfaces | Year: 2014

Intelligent transportation systems (ITS) are rapidly gaining in importance due to the development of information technologies, electronic equipments and wireless sensor networks, being identified as one of the most important technologies for the 21st century. The smart transducer concept and the IEEE 1451 standard improve the scalability of electronic devices and diminish the cost of networked transducers. This paper analyzes the use of the IEEE 1451 standard in the ITS area. A framework based on the architecture of model objects is defined to tie the IEEE 1451 standard into the description of the essential sharable elements of the sensor network. Two real developments are shown as case examples. © 2012 Elsevier B.V.


Guevara J.A.,Catholic University of Asuncion | Vargas E.A.,Catholic University of Asuncion | Fatecha A.F.,Catholic University of Asuncion | Barrero F.,University of Seville
IEEE Sensors Journal | Year: 2015

Ubiquitous and plug-and-play are fundamental characteristics for the development of wireless sensor networks (WSNs). The ISO/IEC/IEEE 21451 family of standards has recently awakened its interest in this development, making easier the introduction of both characteristics in the design of wireless sensor nodes. Dynamic reconfigurability is also an exciting topic that is gathering interest for the development of embedded systems and smart sensor nodes in the last few years. The use of dynamic reconfiguration increases the scalability and heterogeneity capabilities of the sensor network. However, the ISO/IEC/IEEE 21451 standards do not handle dynamically reconfigurable nodes and previously proposed frameworks do not include this capability into novel wireless sensor nodes. In this paper, an ISO/IEC/IEEE 21451 transducer electronic data sheet (TEDS) architecture for the management of reconfigurable WSNs nodes is proposed. To test the node architecture and validate its capability, the proposed TEDS was implemented for an environmental sensor network. © 2014 IEEE.


Galeano D.,Catholic University of Asuncion | Brunetti F.,Catholic University of Asuncion | Brunetti F.,Bioengineering Group | Torricelli D.,Bioengineering Group | And 2 more authors.
NEUROTECHNIX 2013 - Proceedings of the International Congress on Neurotechnology, Electronics and Informatics | Year: 2013

This paper presents a low cost system for the assessment, diagnosis and training of balance based on static posturography and functional electrical stimulation (FES). This system includes low cost technology as the Wii Fit Balance Board and the Kinect. The posturography is a complementary tool to clinical diagnosis, and allows to find sensory systems and inputs degraded by different pathologies. The presented system also allows to explore new rehabilitation techniques based on functional electrical stimulation. Precisely, this paper describes the implementation of a novel balance and posture control rehabilitation approach based on muscle synergies.


Brunetti F.,Bioengineering Group | Brunetti F.,Catholic University of Asuncion | Garay A.,Catholic University of Asuncion | Moreno J.C.,Bioengineering Group | Pons J.L.,Bioengineering Group
IEEE International Conference on Rehabilitation Robotics | Year: 2011

This paper presents the development of a novel functional electrical stimulation (FES) system. New approaches in emerging rehabilitation robotics propose the use of residual muscular activity or limbs movements during the rehabilitation process of neuromotor. More ambitious projects propose the use of FES systems to restore or compensate motor capabilities by controlling existing muscles or subject limbs. These emerging approaches require more sophisticated FES devices in terms of channels, signals controls and portability. In the framework of HYPER project, such devices are being developed to support the main objective of the project: the development of neurorobots and neuroprosthetics to restore functional motor capabilities in patients who suffered cerebrovascular accidents or spinal cord injury. The presented portable FES system includes novel elec-trostimulator circuits and improved channel switching capacities to enable emerging approaches in rehabilitation robotics. © 2011 IEEE.


Gonzalez M.,Catholic University of Asuncion | Cernuzzi L.,Catholic University of Asuncion | Pastor O.,Polytechnic University of Valencia
International Journal of Web Engineering and Technology | Year: 2016

This study presents MoWebA, a navigational role-centric model driven development (MDD) proposal for web applications development. The approach was conceived considering a previous study of web methods and analysing some open issues. This article presents the fundamentals of the proposal; the methodological aspects for modelling and transformation processes; and the defined notations/techniques for modelling and transformation tasks, including their abstract and concrete syntax definitions. We include a summary of the validation experiences and main results, and a comparison against other related proposals, in order to highlight the main contributions of MoWebA. Copyright © 2016 Inderscience Enterprises Ltd.

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