3,113 research outputs found
OTALEX C: Resultados do Projecto
No full textColeção de artigos de vários autores, com os resultados do projeto OTALEX C
How to Approximate any Objective Function via Quadratic Unconstrained Binary Optimization
No full textQuadratic unconstrained binary optimization (QUBO) has become the standard format for optimization using quantum computers, i.e., for both the quantum approximate optimization algorithm (QAOA) and quantum annealing (QA). We present a toolkit of methods to transform almost arbitrary problems to QUBO by (i) approximating them as a polynomial and then (ii) translating any polynomial to QUBO. We showcase the usage of our approaches on two example problems (ratio cut and logistic regression).Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Quantum Circuit Architectures and Technolog
Destete anticipado y producción de corderos Merinos en pastoreo y confinamiento
No full textEl destete anticipado, a los 2-3 meses de edad de los corderos, es una herramienta que se utiliza, especialmente en las veranadas, para evitar pérdidas de cordero. En este contexto, el engorde de corderos en pastoreo y/o en condiciones de confinamiento, se plantean como alternativas a implementar en dichos sistemas de producción, permitiendo disminuir la carga del campo en el caso de los animales a corral y paralelamente reducir la mortalidad de esta categoría.Instituto de Tecnología de AlimentosFil: Bain, Ingrid. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; ArgentinaFil: Ceballos, Demian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Forestal Esquel; ArgentinaFil: Villa, Martin Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estacion Experimental Agropecuaria Forestal Esquel; ArgentinaFil: Grigioni, Gabriela Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Tecnología de Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Inchausti, C. Balanceados Crecer S.A.; Argentin
Structured Test Development Approach for Computation-in-Memory Architectures
No full textTesting of Computation-in-Memory (CIM) designs based on emerging non-volatile memory technologies, such as resistive RAM (RRAM), is fundamentally different from testing traditional memories. Such designs allow not only for data storage (i.e., memory configuration) but also for the execution of logical and arithmetic operations (i.e., computing configuration). Therefore, not only significant design changes are needed in the memory array and/or in the peripheral circuits, but also new fault models and test approaches are needed. Moreover, RRAM-based CIM makes use of non-linear non-volatile devices making the defect modeling with traditional linear resistor inappropriate for such device defects. Hence, even the way of doing defect modeling has to change. This paper discusses a structured test development approach for RRAM-based CIM and highlights the test challenges and how testing CIM dies is different from the traditional way of testing logic and memory. Methods for defect modeling, fault modeling, and test development will be discussed. The paper demonstrates that unique faults can occur in the CIM die while in the computation configuration and that these faults cannot be detected by just testing the CIM die in the memory configuration. Moreover, it shows that testing the CIM die in the computation configuration reduces the overall test time while improving the outgoing product quality. Finally, the paper presents an outlook on the future of structured CIM test development.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Quantum & Computer EngineeringComputer Engineerin
Improved DQN-Based Computation Offloading Algorithm in MEC Environment
No full textMassive terminal users have brought explosive need of data residing at edge of overall network. Multiple Mobile Edge Computing (MEC) servers are built in/near base station to meet this need. However, optimal distribution of these servers to multiple users in real time is still a problem. Reinforcement Learning (RL) as a framework to solve interaction problem is a promising solution. In order to apply RL based algorithm into a multi-agent environment, we propose an iterative scheme: select individual users with priorities to interact with the environment iteratively one at a time Furthermore, we tried to optimize the overall system performance based on this scheme. Hence, we construct three objective system performance indicators: average processing cost, delay and energy consumption, improve the existing Deep Q-learning Network (DQN) by using the cost as reward function, changing the fixed exploitation rate into dynamic one that associated with reward and episode time. In order to explore the performance potential of the proposed algorithm, we have simulated the proposed algorithm, DQN algorithm and greedy algorithm under different users and data sizes. The results show that the proposed algorithm had reduced at least 12% of system average processing cost comparing to the greedy algorithm. It also outperform the greedy algorithm and DQN algorithm in delay and energy consumption significantly.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Computer Engineerin
Antibacterial activity of water activity, lemon essential oil and leuconostoc mesenteroides on escherichia coli growth in tomato puree at 4 and 30°c
No full textIn a previous work we demonstrated that Leuconostoc mesenteroides ssp. mesenteroides Tsc inhibited the development of the autochthonous microflora on tomato purée. We investigated the antibacterial effect of reduced water activity (0.97), lemon essential oil (150 ppm), L. mesenteroides Tsc and its metabolites, D-lactic (3.5 g/l) and acetic (3.0 g/l) acids, on E. coli ATCC 25922 growth in tomato purée at 4 and 30°C. At 30oC E. coli ATCC 25922 grew about 2 log cycles for 24 h, thereafter followed by complete elimination at day 10. At refrigeration temperature, it did not develop but survived during storage. In culture performed with the Tsc strain or D-lactic and acetic acids the initial population of E. coli began to decrease rapidly, no viable cells being detected at 3-4 days at 30oC. In this condition the reduced aw also showed a significant inhibitory effect. At 4oC, the Tsc strain or its metabolites showed the highest inactivation rates, although to a lower extent than at the higher temperature. In both tested conditions lemon essential oil caused the lowest inactivation rate. In conclusion, the Tsc strain and its metabolites would be more efficient for potential application for the preservation of minimally processed vegetable products.Fil: Sajur, Silvia Analia. Universidad Nacional de Tucuman. Facultad de Bioquimica, Quimica y Farmacia. Instituto de Microbiologia; Argentina;Fil: Ceballos, J.. Universidad Nacional de Tucuman. Facultad de Bioquimica, Quimica y Farmacia; Argentina;Fil: Saguir de Zucal, Fabiana Maria. Universidad Nacional de Tucuman. Facultad de Bioquimica, Quimica y Farmacia. Instituto de Microbiologia
Removing dependencies from large software projects: Are you really sure?
No full textWhen developing and maintaining large software systems, a great deal of effort goes into dependency management. During the whole lifecycle of a software project, the set of dependencies keeps changing to accommodate the addition of new features or changes in the running environment. Package management tools are quite popular to automate this process, making it fairly easy to automate the addition of new dependencies and respective versions. However, over the years, a software project might evolve in a way that no longer needs a particular technology or dependency. But the choice of removing that dependency is far from trivial: one cannot be entirely sure that the dependency is not used in any part of the project. Hence, developers have a hard time confidently removing dependencies and trusting that it will not break the system in production. In this paper, we propose a decision framework to improve the detection of unused dependencies. Our approach builds on top of the existing dependency analysis tool DepClean. We start by improving the support of Java dynamic features in DepClean. We do so by augmenting the analysis with the state-of-the-art call graph generation tool OPAL. Then, we analyze the potentially unused dependencies detected by classifying their logical relationship with the other components to decide on follow-up steps, which we provide in the form of a decision diagram. Results show that developers can focus their efforts on maintaining bloated dependencies by following the recommendations of our decision framework. When applying our approach to a large industrial software project, we can reduce one-third of false positives when compared to the state-of-the-art. We also validate our approach by analyzing dependencies that were removed in the history of open-source projects. Results show consistency between our approach and the decisions taken by open-source developers.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Software EngineeringSoftware Technolog
Resultados do Grupo De Trabalho De Tecnologias Avançadas Idedo Projecto OTALEX C
No full textSe muestran los resultados del Grupo de Trabajo de Tecnologías Avanzadas IDE de
OTALEX-C siendo estos: la generación de datos enlazados de elementos geográficos y cartográficos
del territorio OTALEX-C para la publicación de una Web Semántica y la captura y publicación de datos
medioambientales de la zona del observatorio OTALEX-C a través de servicios estándar de publicación
de observación de medidas de sensores en aplicación del estándar SOS definido por el OGC.
Los objetivos se concretaban en dos actividades. En la actividad ”Web Semántica” ha sido publicado en
el portal Web de OTALEX un nodo de la nube de datos abiertos (Open Data) bajo este paradigma
semántico de Datos Enlazados (Linked Data). La actividad sobre publicación de datos de sensores
ambientales y meteorológicos ha trabajado con fuentes de datos de España y de Portugal. El servidor
de datos de sensores SOS V2.0 está instalado en los servidores del portal OTALEX. Este servidor
incorpora un servicio de publicación de mapas temáticos realizados on-line con los datos capturados.
En la ejecución de esta actividad se ha instalado una estación meteorológica dependiente del proyecto
OTALEX en el CIMAC (Évora-Portugal) como complemento a la investigación en la captura y
tratamiento de datos medioambientales para su publicación
16 anos de cooperação transfronteiriça em matéria de território e SIG
No full textOTALEX C es el Observatorio Territorial y Ambiental Alentejo Extremadura Centro. Tiene
como objetivos la caracterización y el análisis territorial y ambiental del área de estas tres regiones y la
monitorización de las alteraciones y presiones en ambos lados de la frontera Hispano-Portuguesa en
este ámbito, cubriendo cerca de 92.000 km2. De los numerosos resultados alcanzados destacan: la
compatibilización y creación de cartografía conjunta de las tres regiones, la homogeneización de
indicadores, la creación de la primera infraestructura de datos espaciales transfronteriza no piloto,
multilingüe, desarrollada en software open source (IDEOTALEX www.ideotalex.eu), la creación de un
sistema de indicadores territoriales y ambientales para todo el área (SI-OTALEX) y la publicación de
diversos libros de resultados y de los Atlas Alentejo-Extremadura y Alentejo-Centro-Extremadura
Indicadores de dependencia del Noroeste Argentino, 1991
No full textEn las sociedades actuales se observan dos fenómenos: (a) que las personas viven más años que antes y (b) hay un importante crecimiento en el número de personas en edades avanzadas. El primero es inherente a la prolongación de la vida de los individuos, mientras que el segundo corresponde al envejecimiento de las poblaciones. El proceso de envejecimiento de las poblaciones se muestra a través del cambio en su distribución por edades. El grado de envejecimiento varía según el indicador o los indicadores que se consideren, que puede ser la edad media o mediana de la población, la proporción de personas mayores o menores de cierta edad, la relación entre el número de viejos y de niños (o a la inversa), entre otros. En este trabajo se consideran básicamente el comportamiento de tres indicadores de dependencia de la población en las provincias del Noroeste Argentino y se lo compara con el promedio del país; ellos son: (a) relación de dependencia demográfica total, (b) relación de dependencia efectiva y (c) relación de dependencia real. Estas dos últimas relaciones de dependencia son de desarrollo reciente. Es importante realizar el seguimiento de las estructuras por edades de la población del Noroeste ya que en la medida que su cambio den origen a una mayor proporción de personas en edad avanzada, tarde o temprano la región deberá hacer frente a las consecuencias que ello acarrea en los aspectos sociales, económicos, culturales, políticos y éticos.Fil: Ceballos, Maria Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Estudios Sociales. Universidad Nacional de Tucumán. Instituto Superior de Estudios Sociales; ArgentinaFil: Jarma, Nora Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Estudios Sociales. Universidad Nacional de Tucumán. Instituto Superior de Estudios Sociales; Argentin
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