41 results on '"Planas, Elena"'
Search Results
2. Towards Access Control Models for Conversational User Interfaces
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Planas, Elena, Martínez, Salvador, Brambilla, Marco, Cabot, Jordi, van der Aalst, Wil, Series Editor, Mylopoulos, John, Series Editor, Ram, Sudha, Series Editor, Rosemann, Michael, Series Editor, Szyperski, Clemens, Series Editor, Augusto, Adriano, editor, Gill, Asif, editor, Bork, Dominik, editor, Nurcan, Selmin, editor, Reinhartz-Berger, Iris, editor, and Schmidt, Rainer, editor
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- 2022
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3. Computing Activities at the Spanish Tier-1 and Tier-2s for the ATLAS experiment in the LHC Run 3 period and towards High Luminosity (HL-LHC)
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González de la Hoz Santiago, Acin Vanesa, Accion Esther, Acosta-Silva Carles, Aparisi Javier, Collado Soto Pablo, del Peso Jose, Fernández Casani Álvaro, Flix Jose, García Montoro Carlos, Merino Gonzalo, Pacheco Pages Andreu, Planas Elena, Sánchez Javier, Salt Jose, and Villaplana Perez Miguel
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Physics ,QC1-999 - Abstract
The ATLAS Spanish Tier-1 and Tier-2s have more than 18 years of experience in the deployment and development of LHC computing components and their successful operation. The sites are actively participating in, and in some cases coordinating, R&D computing activities in the LHC Run 3 and developing the computing models needed in the HL-LHC period. In this contribution, we present details on the integration of some components, such as HPC computing resources to execute ATLAS simulation workflows; the development of new techniques to improve efficiency in a cost-effective way; and improvements in Data Organization, Management and Access through storage consolidations, the use of data caches, and improving experiment data catalogues, through contributions such as Event Index. The design and deployment of novel analysis facilities using GPUs together with CPUs and techniques like Machine Learning are also presented. ATLAS Tier-1 and Tier-2 sites in Spain, are, and will be, contributing to significant R&D in computing and evaluating different models for improving performance of computing and data storage capacity in the LHC High Luminosity era.
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- 2024
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4. Analysis of Feature Models Using Alloy: A Survey
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Sree-Kumar, Anjali, Planas, Elena, and Clarisó, Robert
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Computer Science - Software Engineering ,D.2.7 - Abstract
Feature Models (FMs) are a mechanism to model variability among a family of closely related software products, i.e. a software product line (SPL). Analysis of FMs using formal methods can reveal defects in the specification such as inconsistencies that cause the product line to have no valid products. A popular framework used in research for FM analysis is Alloy, a light-weight formal modeling notation equipped with an efficient model finder. Several works in the literature have proposed different strategies to encode and analyze FMs using Alloy. However, there is little discussion on the relative merits of each proposal, making it difficult to select the most suitable encoding for a specific analysis need. In this paper, we describe and compare those strategies according to various criteria such as the expressivity of the FM notation or the efficiency of the analysis. This survey is the first comparative study of research targeted towards using Alloy for FM analysis. This review aims to identify all the best practices on the use of Alloy, as a part of a framework for the automated extraction and analysis of rich FMs from natural language requirement specifications., Comment: In Proceedings FMSPLE 2016, arXiv:1603.08577
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- 2016
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5. Towards Access Control Models for Conversational User Interfaces
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Planas, Elena, primary, Martínez, Salvador, additional, Brambilla, Marco, additional, and Cabot, Jordi, additional
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- 2022
- Full Text
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6. Towards a model-driven approach for multiexperience AI-based user interfaces
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Planas, Elena, Daniel, Gwendal, Brambilla, Marco, and Cabot, Jordi
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- 2021
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7. How are UML class diagrams built in practice? A usability study of two UML tools: Magicdraw and Papyrus
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Planas, Elena and Cabot, Jordi
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- 2020
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8. Model-Driven Analytics for Open Data APIs
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Planas, Elena, Baneres, David, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Pautasso, Cesare, editor, Sánchez-Figueroa, Fernando, editor, Systä, Kari, editor, and Murillo Rodríguez, Juan Manuel, editor
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- 2018
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9. Generative AI in Model-Driven Software Engineering Education: Friend or Foe?
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Morales, Sergio, primary, Planas, Elena, additional, Clarisó, Robert, additional, and Gogolla, Martin, additional
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- 2023
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10. ¿En qué se diferencian las graduadas de los graduados en su trayectoria en el Grado en Ingeniería Informática? El caso de la Universitat Oberta de Catalunya
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Minguillón, Julià, Marco-Galindo, Maria-Jesús, Marco-Simó, Josep Maria, Planas, Elena, Minguillón, Julià, Marco-Galindo, Maria-Jesús, Marco-Simó, Josep Maria, and Planas, Elena
- Abstract
Existen muchos trabajos sobre de la brecha de género en los estudios de informática, pero no tantos sobre el desempeño de las graduadas durante sus estudios. Este artículo explora la trayectoria académica de las graduadas y graduados en Ingeniería Informática de la Universitat Oberta de Catalunya (UOC), analizando las posibles diferencias en lo que concierne a la vía de acceso, al itinerario escogido y a su rendimiento académico. Los resultados muestran diferencias importantes en la vía de acceso, donde las mujeres se incorporan principalmente con una titulación universitaria previa, empezada o finalizada, mientras que los hombres lo hacen también desde ciclos formativos de grado superior. Su trayectoria y rendimiento son similares –ligeramente superior en las mujeres–, pero escogen itinerarios diferentes. No obstante, el género no parece ser el único factor que determina esta elección. Esto permite corroborar algunas de las creencias habituales y contradecir otras, en el contexto de una universidad en línea., There are many papers on the gender gap in computer science studies, but not so many on the performance of female graduates during their degree. This work explores the academic trajectory of Computer Engineering graduates from the Universitat Oberta de Catalunya (UOC), analyzing the possible differences regarding their university entrance, their chosen itinerary and their academic performance. The results show important differences in the entrance to university, as most women access from a previous university degree, started or completed, while men also do so from vocational training cycles. Their trajectory and performance are similar –slightly better in the case of women–, but they choose different elective itineraries. However, gender does not seem to be the only factor determining this choice. This allows us to corroborate some of the common beliefs and contradict others, in the context of an online university.
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- 2023
11. Lightweight and static verification of UML executable models
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Planas, Elena, Cabot, Jordi, and Gómez, Cristina
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- 2016
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12. Model-Driven Analytics for Open Data APIs
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Planas, Elena, primary and Baneres, David, additional
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- 2018
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13. CMS data access and usage studies at PIC Tier-1 and CIEMAT Tier-2
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Delgado Peris Antonio, Flix Molina José, Hernández José M., Pérez-Calero Yzquierdo Antonio, Pérez Dengra Carlos, Planas Elena, Rodríguez Calonge Francisco Javier, and Sikora Anna
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Physics ,QC1-999 - Abstract
The current computing models from LHC experiments indicate that much larger resource increases would be required by the HL-LHC era (2026+) than those that technology evolution at a constant budget could bring. Since worldwide budget for computing is not expected to increase, many research activities have emerged to improve the performance of the LHC processing software applications, as well as to propose more efficient resource deployment scenarios and data management techniques, which might reduce this expected increase of resources. The massively increasing amounts of data to be processed leads to enormous challenges for HEP storage systems, networks and the data distribution to end-users. These challenges are particularly important in scenarios in which the LHC data would be distributed from small numbers of centers holding the experiment’s data. Enabling data locality relative to computing tasks via local caches on sites seems a very promising approach to hide transfer latencies while reducing the deployed storage space and number of replicas overall. However, this highly depends on the workflow I/O characteristics and available network across sites. A crucial assessment of how the experiments are accessing and using the storage services deployed in WLCG sites, to evaluate and simulate the benefits for several of the new emerging proposals within WLCG/HSF. Studies on access and usage of storage, data access and popularity studies for the CMS workflows executed in the Spanish Tier-1 (PIC) and Tier-2 (CIEMAT) sites supporting CMS activities are reviewed in this report, based on local and experiment monitoring data, spanning more than one year. This is of relevance for simulation of data caches for end-user analysis data, as well as identifying potential areas for storage savings.
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- 2020
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14. Alf-Verifier: An Eclipse Plugin for Verifying Alf/UML Executable Models
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Planas, Elena, Sanchez-Mendoza, David, Cabot, Jordi, Gómez, Cristina, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Castano, Silvana, editor, Vassiliadis, Panos, editor, Lakshmanan, Laks V., editor, and Lee, Mong Li, editor
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- 2012
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15. Lightweight Verification of Executable Models
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Planas, Elena, Cabot, Jordi, Gómez, Cristina, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Jeusfeld, Manfred, editor, Delcambre, Lois, editor, and Ling, Tok-Wang, editor
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- 2011
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16. Verifying Action Semantics Specifications in UML Behavioral Models
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Planas, Elena, Cabot, Jordi, Gómez, Cristina, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, van Eck, Pascal, editor, Gordijn, Jaap, editor, and Wieringa, Roel, editor
- Published
- 2009
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17. Un caso de incorporación de la perspectiva de género: de la estrategia institucional a la asignatura final
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Marco-Simó, Josep Maria, Planas, Elena, Huertas Sanchez, Maria Antonia, Marco-Galindo, Maria-Jesús, Santamaría Pérez, Eugènia, Serra, Montse, García García, María José, Marco-Simó, Josep Maria, Planas, Elena, Huertas Sanchez, Maria Antonia, Marco-Galindo, Maria-Jesús, Santamaría Pérez, Eugènia, Serra, Montse, and García García, María José
- Abstract
La Unidad de Igualdad de la Universitat Oberta de Catalunya (UOC) en su último plan de igualdad incluyó, entre otros objetivos, el de asegurar la perspectiva de género en la docencia. La vía propuesta fue la definición de una competencia transversal (Comportamiento ético y global) que debería implantarse en todos los programas. Por su parte, la Facultad de Informática de la misma universidad trabaja en el mismo sentido desde 2019 en su Comisión de Equidad. En este artículo se expone el proceso seguido desde la aparición de este impulso institucional hasta su conceptualización en dicha competencia y su vinculación concreta a un subconjunto de las asignaturas del Grado y del Máster en Ingeniería Informática. Se detallan las fases, las directrices establecidas, la selección de las asignaturas y un ejemplo de implantación en una de ellas. El principal resultado de la experiencia es que este es un proceso viable gracias a unos factores facilitadores ya existentes y a la implicación de los grupos interesados, pero que no está libre de contradicciones ni es todavía maduro en todos los aspectos clave, entre ellos algunos tan relevantes como el de la evaluación de la competencia., The last equality plan of the Gender Unit of the Universitat Oberta de Catalunya includes, among others goals, ensuring a gender perspective in the teaching process. To this aim, a new transversal competency (Global and Ethical Behaviour), that should be included in every official bachelor’s and master’s degree programme, has been defined. For its part, the Computer Science Faculty of the same university, has been working in the same direction since 2019 within its Equality Commission. In this paper, we present the process followed since the emergence of this institutional impulse to its conceptualization as a competence and its specific implementation in a subset the Bachelor's and Master's in Computer Engineering courses. The phases, the established guidelines, the selection of the subjects and an example of implementation in one of them are detailed. The main result of the experience is that this is a viable process thanks to some facilitating factors that already exist and to the involvement of the stakeholders. Even though it is not free from contradictions nor it is yet mature in all the key aspects, including some that are so relevant such as the competence evaluation.
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- 2022
18. An empirical study on the impact of introducing a modeling tool in a Requirement Engineering course
- Author
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Burgueno, Loli, primary, Izquierdo, Javier Luis Canovas, additional, and Planas, Elena, additional
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- 2021
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19. Introducción de una herramienta OCL en la asignatura de Ingeniería de Requisitos
- Author
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Burgueño, Loli, Cánovas Izquierdo, Javier Luis, Planas, Elena, and Cabot, Jordi
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Ingeniería de requisitos ,OCL ,Herramientas - Abstract
En muchas asignaturas de Ingeniería Informática se pide a los alumnos que programen en papel. Entre sus ventajas, esto permite a los alumnos centrarse en la funcionalidad evitando las distracciones causadas por la sintaxis y sin limitar su pensamiento a un lenguaje o paradigma de programación concreto. Aún así, los estudiantes se quejan de no poder probar su código, lo que les impide descubrir errores. En contraposición al estado del arte que ha estudiado este problema para lenguajes de propósito general como Java con estudiantes de cursos iniciales, nosotros nos centramos en lenguajes estándares de la definición de reglas como OCL que se imparten en cursos avanzados. En este artículo presentamos nuestra experiencia tras introducir una herramienta de modelado para la definición de restricciones OCL en una asignatura de Ingeniería de Requisitos. Esta asignatura es optativa y se ofrece en el tercer y cuarto curso del grado de Ingeniería Informática. El estudio que hemos realizado abarca dos cursos académicos, 2019 y 2020, en los cuales hubo 136 y 161 estudiantes matriculados respectivamente. Presentamos los detalles de nuestro experimento, los resultados obtenidos del estudio empírico llevado a cabo y nuestras conclusiones, las cuales respaldan la idoneidad del uso de herramientas. In many Computer Engineering courses, students are asked to program on paper. Among its advantages, this allows students to focus on functionality avoiding the distractions caused by syntax and without limiting their thinking to a specific programming language or paradigm. Still, students complain about not being able to test their code, preventing them from discovering bugs. While the state of the art has studied this problem for general-purpose languages like Java and with students of initial courses, we focus on standard languages for contraint definition like OCL, which are taught in advanced courses. In this article, we present our experience after introducing a modeling tool for the definition of OCL constraints in the Requirements Engineering course. This course is optional and is offered in the third and fourth years of the Computer Engineering degree. The study we have carried out covers two academic years, 2019 and 2020, in which there were 136 and 161 students enrolled, respectively. We present the details of our study, the results obtained from the empirical study carried out and our conclusions, which support the suitability of the use of tools.
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- 2021
20. Validating Feature Models With Respect to Textual Product Line Specifications
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Sree-Kumar, Anjali, primary, Planas, Elena, additional, and Clarisó, Robert, additional
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- 2021
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21. Lightweight Verification of Executable Models
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Planas, Elena, primary, Cabot, Jordi, additional, and Gómez, Cristina, additional
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- 2011
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22. Verifying Action Semantics Specifications in UML Behavioral Models
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Planas, Elena, primary, Cabot, Jordi, additional, and Gómez, Cristina, additional
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- 2009
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23. CMS data access and usage studies at PIC Tier-1 and CIEMAT Tier-2.
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Doglioni, C., Kim, D., Stewart, G.A., Silvestris, L., Jackson, P., Kamleh, W., Delgado Peris, Antonio, Flix Molina, José, Hernández, José M., Pérez-Calero Yzquierdo, Antonio, Pérez Dengra, Carlos, Planas, Elena, Rodríguez Calonge, Francisco Javier, and Sikora, Anna
- Subjects
LARGE Hadron Collider ,INFORMATION retrieval ,COMPUTER access control software ,COMPUTER input-output equipment ,DATA analysis - Abstract
The current computing models from LHC experiments indicate that much larger resource increases would be required by the HL-LHC era (2026+) than those that technology evolution at a constant budget could bring. Since worldwide budget for computing is not expected to increase, many research activities have emerged to improve the performance of the LHC processing software applications, as well as to propose more efficient resource deployment scenarios and data management techniques, which might reduce this expected increase of resources. The massively increasing amounts of data to be processed leads to enormous challenges for HEP storage systems, networks and the data distribution to end-users. These challenges are particularly important in scenarios in which the LHC data would be distributed from small numbers of centers holding the experiment's data. Enabling data locality relative to computing tasks via local caches on sites seems a very promising approach to hide transfer latencies while reducing the deployed storage space and number of replicas overall. However, this highly depends on the workflow I/O characteristics and available network across sites. A crucial assessment of how the experiments are accessing and using the storage services deployed in WLCG sites, to evaluate and simulate the benefits for several of the new emerging proposals within WLCG/HSF. Studies on access and usage of storage, data access and popularity studies for the CMS workflows executed in the Spanish Tier-1 (PIC) and Tier-2 (CIEMAT) sites supporting CMS activities are reviewed in this report, based on local and experiment monitoring data, spanning more than one year. This is of relevance for simulation of data caches for end-user analysis data, as well as identifying potential areas for storage savings. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
24. ¿Realmente la programación puede ser para todos? Análisis de la experiencia dentro de un MOOC
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Bañeres, David, Casado, Carlos, Ornellas, Adriana, Planas, Elena, Prieto, Josep, and Serra, Montse
- Subjects
Pensamiento computacional ,Programación para todos ,MOOC ,Scratch - Abstract
Cuando se analiza la posibilidad de que toda persona pueda aprender a programar surgen diferentes incógnitas sobre cuál es la mejor forma de abordar la cuestión. El lenguaje de programación, la metodología, la tipología de ejercicios, o la duración de un curso son variables que pueden determinar el éxito o el fracaso del mismo. En este artículo se presenta una experiencia docente en la impartición de un MOOC (Massive Open Online Course) para iniciarse en la programación dirigido a todos los públicos. Se describen y discuten el diseño, el desarrollo y los resultados alcanzados con el objetivo de discernir si un curso de estas características puede ser factible para iniciar a cualquier persona en la programación de ordenadores. Many questions appear when the statement “any citizen is able to learn programming language” is analysed. The programming language, the methodology, the type of exercises or the duration of the course are variables that may affect the success or the failure of an introductory course. This paper presents a teaching experience of a MOOC course aiming at introducing programming suitable for all audiences. The design, the execution and the results are described along with a discussion whether this type of course can be feasible as an introductory course to learn language programming. Este trabajo ha sido parcialmente financiado por el Elearn Center de la Universitat Oberta de Catalunya en el programa de ayudas a la promoción y diseño de MOOC.
- Published
- 2018
25. Extracting software product line feature models from natural language specifications
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Sree-Kumar, Anjali, primary, Planas, Elena, additional, and Clarisó, Robert, additional
- Published
- 2018
- Full Text
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26. The LHC Tier-1 at PIC: ten years of operations
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Josep, Flix Molina, primary, Acción, Esther, additional, Acín, Vanessa, additional, Acosta-Silva, Carlos, additional, Bernabeu, Gerard, additional, Casals, Jordi, additional, Caubet, Marc, additional, Cruz, Ricard, additional, Delfino, Manuel, additional, Espinal, Xavier, additional, Hernandez, José María, additional, López, Fernando, additional, Merino, Gonzalo, additional, Pacheco Pages, Andreu, additional, Planas, Elena, additional, Perez-Calero Yzquierdo, Antonio, additional, Porto, Mari Carmen, additional, Rodríguez, Bruno, additional, and Vedaee, Aresh, additional
- Published
- 2017
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27. Potenciando el compromiso social de la universidad mediante las TIC
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Serra, Montse, Planas, Elena, Baneres, David, and Ornellas, Adriana
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Patients ,Informàtica [Àrees temàtiques de la UPC] ,Compromiso social ,Ensamblador ,Actividad lúdico-educativa ,Pacients ,Scratch ,Ensenyament i aprenentatge [Àrees temàtiques de la UPC] ,Formación voluntarios ,Informàtica -- Ensenyament ,Computer science -- Study and teaching ,Hospitalización infantil - Abstract
Una educación de calidad y al alcance de todos es parte del compromiso social que tienen las universidades en el contexto cambiante en que vivimos. Las TIC constituyen un elemento estratégico para que las universidades puedan plantear respuestas a las necesidades de los sectores de la sociedad en riesgo de exclusión y aumentar las oportunidades de desarrollo y acceso al conocimiento de las personas y las comunidades. Desde el año 2013, nuestra universidad viene desarrollando diversas iniciativas con el propósito de acercar las TIC a la sociedad en general y a la educación en particular como una herramienta para el aprendizaje permanente. Uno de estos proyectos tiene como finalidad promover una mejor adaptación de los niños y adolescentes ingresados en diferentes instituciones hospitalarias para favorecer su estancia mediante la realización de un conjunto de actividades lúdicoeducativas basadas en el aprendizaje de la programación de aplicaciones informáticas. Dichas actividades pueden llevarse a cabo dentro del recinto hospitalario o en el mismo domicilio del enfermo. El objetivo del presente artículo es presentar la experiencia desarrollada A quality educational system for all the audiences belongs to the main social commitment that universities have with the current and ever-changing society. The ICT are a strategic key element for the universities in order to promote solutions for sectors of the population which suffer social exclusion and to increase its access to the knowledge. Our university has developed several initiatives with the objective to approach the technology to the general audience. Moreover, these activities promote the lifelong learning using the technology as a tool. One of these projects focuses on encouraging a better adaptation of inpatient young people to facilitate the stay by doing several leisure-educational activities based on learning of a programming language. These activities could be done in the hospital grounds or in the inpatient residence. The aim of this paper is to show the experience of this initiative
- Published
- 2015
28. Designing game-like activities to engage adult learners in higher education
- Author
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Mora, Alberto, primary, Planas, Elena, additional, and Arnedo-Moreno, Joan, additional
- Published
- 2016
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29. Analysis of Feature Models Using Alloy: A Survey
- Author
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Sree-Kumar, Anjali, primary, Planas, Elena, additional, and Clarisó, Robert, additional
- Published
- 2016
- Full Text
- View/download PDF
30. PeLP: Plataforma para el Aprendizaje de Lenguajes de Programación
- Author
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Baró, Xavier, Masip, David, Planas, Elena, and Minguillón, Julià
- Subjects
Aprendizaje en línea ,Informàtica [Àrees temàtiques de la UPC] ,Recursos educativos ,Ensenyament i aprenentatge [Àrees temàtiques de la UPC] ,Lenguajes de programación ,Informàtica -- Ensenyament ,Computer science -- Study and teaching - Abstract
En este artículo se presenta una plataforma para el aprendizaje en línea de lenguajes de programación. Su principal objetivo es ofrecer una retroalimentación inmediata a los estudiantes en sus ejercicios de programación. Además, la plataforma contiene un conjunto de servicios web que permiten la compilación y verificación de código en línea. La plataforma no sólo facilita a los docentes la gestión y corrección de las actividades de los estudiantes y les da un retorno inmediato, sino que abre la puerta a la realización de aplicaciones web que permitan la resolución en línea de ejercicios de programación sin la necesidad de instalar ningún entorno de desarrollo ni depender de ninguna plataforma concreta. Actualmente se está implantando en asignaturas de los Grados en Ingeniería Informática y Tecnologías de la Telecomunicación. SUMMARY -- This paper presents an eLearning platform for programming languages. Its main aim is to provide students with immediate feedback on their programming exercises. In addition, the platform contains a set of web services that allow online compilation and code verification. The platform does not only simplify the management and correction of activities to teachers and gives immediate feedback to students, but also opens the door to the realization of web applications that allow online resolution of programming exercises without installing any development environment and totally platform independent. The platform is currently on implantation process for Computer Science and Telecomunication Degrees.
- Published
- 2013
31. Cámara de presión por TDR para la medida de la curva de retención de agua en muestras inalteradas de suelo
- Author
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Moret-Fernández, David, Vicente, José, Latorre Garcés, Borja, Castañeda del Álamo, Carmen, Paracuellos Planas, Elena, and Lera, F.
- Abstract
6 Pagss. 2 Tabls, 5 Figs., [EN] The water retention curve (θ(ψ)), which defines the relationship between soil volumetric water content (θ) and matric potential (ψ), is of paramount importance in characterizing the hydraulic behavior of soils. We present a design of TDR-pressure cell (TDRCell) for estimating θ(ψ) in undisturbed soil samples. The TDR-Cell consists of a 50-mm-long and 50-mm internal diameter stainless steel cylinder attached to a porous ceramic disc and closed at the ends with two aluminum lids. A 49-mm-long and 3-mm-diameter stainless steel rod, which runs longitudinally through the centre of the cylinder, constitutes the inner rod of a coaxial TDR probe. The TDR-Cell was used to determine the θ(ψ) curves of packed sand and seven undisturbed soil samples from three profiles of agricultural soils. These θ(ψ) curves were subsequently compared to those obtained from the corresponding 2-mm sieved soils using the pressure plate method. An excellent correlation (R2 = 0.988) was found between the θ values measured by TDR on the different undisturbed soils and the corresponding θ obtained from the soil gravimetric water content. A typical bimodal θ(ψ) function was found for most of the undisturbed soil samples. Comparison between the θ(ψ) curves measured with the TDR-Cell and those obtained from the 2-mm sieved soils showed that the pressure plate method overestimates θ at low ψ values., [ES] La curva de retención de agua en el suelo, θ(ψ), definida como la relación entre el contenido volumétrico de agua en el suelo (θ) y el potencial mátrico (ψ), es una propiedad fundamental para caracterizar el comportamiento hidráulico del suelo. Este trabajo presenta un diseño de cámara de presión por TDR (Celda-TDR) para la medida de θ(ψ) en muestras intactas de suelo. Esta cámara consiste en un cilindro de acero inoxidable de 50 mm de longitud y 50 mm diámetro interno, que reposa sobre un disco cerámico y cerrado por los dos extremos con dos tapas de aluminio perforadas. La tapa superior tiene insertada una varilla de acero inoxidable de 49 mm de longitud y 3 mm de diámetro que cruza longitudinalmente el centro del cilindro. Ambos elementos, cilindro y varilla, conforman una sonda coaxial cilíndrica que permite medir la humedad del suelo contenido en la cámara de presión. Se efectuó un primer experimento de laboratorio para comprobar la fiabilidad el método TDR para la medida de θ. Posteriormente se estimó, utilizando la Celda-TDR, la curva de retención de siete muestras de suelo inalterado procedentes de los horizontes genéticos de tres calicatas. Las curvas θ(ψ) obtenidas con la Celda-TDR fueron posteriormente comparadas con las obtenidas sobre las mismas muestras de suelo tamizadas a 2 mm de diámetro utilizando el método clásico de las ollas de presión. La correlación entre θ medida por TDR y el método gravimétrico fue excelente (R2 = 0.988). Las curvas θ(ψ) obtenidas con la Celda-TDR en las muestras de suelo inalterado muestran un claro comportamiento bimodal. Sin embargo, se observaron grandes diferencias entre θ(ψ) medida en las muestras inalteradas de suelo y las obtenidas en el suelo tamizado, dando estas últimas una clara sobreestimación de θ en condiciones próximas a saturación., El presente trabajo ha sido financiado por la Comisión Interministerial de Ciencia y Tecnología (proyectos: AGL2007-66320- CO2-02/AGR) CSIC (Proyectos: PIE-200840I214 and 2008401246) y DGA- Obra social La Caixa (Proyectos: GA-LC-010/2008; GA-LC-006- 2008).
- Published
- 2011
32. Verifying action semantics specifications in UML behavioral models (Extended version)
- Author
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Planas, Elena, Cabot, Jordi, Gómez Seoane, Cristina, Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics, and Universitat Politècnica de Catalunya. inSSIDE - integrated Software, Service, Information and Data Engineering
- Subjects
Formal verification ,Informàtica::Enginyeria del software [Àrees temàtiques de la UPC] ,Formal specification ,Unified Modeling Language - Abstract
MDD and MDA approaches require capturing the behavior of UML models in sufficient detail so that the models can be automatically implemented/executed in the production environment. With this purpose, Action Semantics (AS) were added to the UML specification as the fundamental unit of behavior specification. Actions are the basis for defining the fine-grained behavior of operations, activity diagrams, interaction diagrams and state machines. Unfortunately, current proposals devoted to the verification of behavioral schemas tend to skip the analysis of the actions they may include. The main goal of this paper is to cover this gap by presenting several techniques aimed at verifying AS specifications. Our techniques are based on the static analysis of the dependencies between the different actions included in the behavioral schema. For incorrect specifications, our method returns a meaningful feedback that helps repairing the inconsistency.
- Published
- 2009
33. Designing game-like activities to engage adult learners in higher education.
- Author
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Mora, Alberto, Planas, Elena, and Arnedo-Moreno, Joan
- Published
- 2016
- Full Text
- View/download PDF
34. Medida y evaluación de la salinidad edáfica en Monegros para modulación de las ayudas de la PAC por superficies
- Author
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Paracuellos Planas, Elena, Castañeda del Álamo, Carmen, Herrero Isern, Juan, Castañeda del Álamo, Carmen [0000-0002-7467-4812], and Herrero Isern, Juan [0000-0002-4132-4920]
- Abstract
135 Pags.- 21 Figs.- 18 Tabls. Proyecto dirigido, en la Unidad de Suelos y Riegos del Centro de Investigación y Tecnología Agroalirnentaria (C.I.T.A.), Unidad Asociada a la EEAD-CSIC, por los Drs. Carmen Castañeda del Álamo y Dr. Juan Herrero Isern, investigadores EEAD-CSIC. Creative Commons License Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)., El objetivo general de este trabajo es establecer criterios agronómicos utilizables para regular la actividad agrícola y las ayudas económicas de la UE. De entre los muchos criterios aplicables, el presente trabajo se ha centrado en la salinidad edáfica. Así, a través de índices que recojan las condiciones de salinidad edáfica, se podrían estipular límites para el laboreo en la interfase humedal-cultivo sin desfavorecer los derechos y subsidios económicos del agricultor. Dadas las condiciones especiales de estos humedales y su entorno -tamaño, régimen hídrico, fluctuaciones de humedad y salinidad-, este objetivo general se ha desglosado en los siguientes objetivos concretos: 1.Establecer puntos de muestreo dispuestos en transectos representativos de las áreas seleccionadas, levantando el perfil topográfico de cada transecto. 2.Caracterizar los puntos de muestreo: profundidad del nivel freático, vegetación, y laboreo agrícola en su caso. 3.Obtener la salinidad en los puntos de muestreo mediante métodos clásicos y estimar su influencia en el rendimiento de los cultivos. 4.Estudiar la utilidad del sensor electromagnético (SEM) para reducir el número de muestras de suelo en futuros reconocimientos de estas zonas, calibrando el instrumento con la salinidad obtenida en el punto anterior.
- Published
- 2006
35. CUCKOO: Una plataforma web para la verificación de modelos UML
- Author
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Caballé, Santi, Cabot, Jordi, Clarisó, Robert, Conesa, Jordi, Planas, Elena, Riera Terrén, Daniel, Caballé, Santi, Cabot, Jordi, Clarisó, Robert, Conesa, Jordi, Planas, Elena, and Riera Terrén, Daniel
- Abstract
En este artículo presentamos CUCKOO (QUality cheCKing of Object Oriented designs) una plataforma web para la verificación de diagramas de clases UML. Esta plataforma está orientada a facilitar el aprendizaje de las fases de análisis y diseño dentro de las asignaturas de Ingeniería del Software.
- Published
- 2009
36. Verifying action semantics specifications in UML behavioral models (Extended version)
- Author
-
Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics, Universitat Politècnica de Catalunya. inSSIDE - integrated Software, Service, Information and Data Engineering, Planas, Elena, Cabot, Jordi, Gómez Seoane, Cristina, Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics, Universitat Politècnica de Catalunya. inSSIDE - integrated Software, Service, Information and Data Engineering, Planas, Elena, Cabot, Jordi, and Gómez Seoane, Cristina
- Abstract
MDD and MDA approaches require capturing the behavior of UML models in sufficient detail so that the models can be automatically implemented/executed in the production environment. With this purpose, Action Semantics (AS) were added to the UML specification as the fundamental unit of behavior specification. Actions are the basis for defining the fine-grained behavior of operations, activity diagrams, interaction diagrams and state machines. Unfortunately, current proposals devoted to the verification of behavioral schemas tend to skip the analysis of the actions they may include. The main goal of this paper is to cover this gap by presenting several techniques aimed at verifying AS specifications. Our techniques are based on the static analysis of the dependencies between the different actions included in the behavioral schema. For incorrect specifications, our method returns a meaningful feedback that helps repairing the inconsistency., Postprint (published version)
- Published
- 2009
37. Opinion Mining on Educational Resources at the Open University of Catalonia
- Author
-
Guitart, Isabel, primary, Conesa, Jordi, additional, Villarejo, Luis, additional, Lapedriza, Agata, additional, Masip, David, additional, Perez, Antoni, additional, and Planas, Elena, additional
- Published
- 2013
- Full Text
- View/download PDF
38. Medida y evaluación de la salinidad edáfica en Monegros para modulación de las ayudas de la PAC por superficies
- Author
-
Castañeda del Álamo, Carmen, Herrero Isern, Juan, Castañeda del Álamo, Carmen [0000-0002-7467-4812], Herrero Isern, Juan [0000-0002-4132-4920], Paracuellos Planas, Elena, Castañeda del Álamo, Carmen, Herrero Isern, Juan, Castañeda del Álamo, Carmen [0000-0002-7467-4812], Herrero Isern, Juan [0000-0002-4132-4920], and Paracuellos Planas, Elena
- Abstract
El objetivo general de este trabajo es establecer criterios agronómicos utilizables para regular la actividad agrícola y las ayudas económicas de la UE. De entre los muchos criterios aplicables, el presente trabajo se ha centrado en la salinidad edáfica. Así, a través de índices que recojan las condiciones de salinidad edáfica, se podrían estipular límites para el laboreo en la interfase humedal-cultivo sin desfavorecer los derechos y subsidios económicos del agricultor. Dadas las condiciones especiales de estos humedales y su entorno -tamaño, régimen hídrico, fluctuaciones de humedad y salinidad-, este objetivo general se ha desglosado en los siguientes objetivos concretos: 1.Establecer puntos de muestreo dispuestos en transectos representativos de las áreas seleccionadas, levantando el perfil topográfico de cada transecto. 2.Caracterizar los puntos de muestreo: profundidad del nivel freático, vegetación, y laboreo agrícola en su caso. 3.Obtener la salinidad en los puntos de muestreo mediante métodos clásicos y estimar su influencia en el rendimiento de los cultivos. 4.Estudiar la utilidad del sensor electromagnético (SEM) para reducir el número de muestras de suelo en futuros reconocimientos de estas zonas, calibrando el instrumento con la salinidad obtenida en el punto anterior.
- Published
- 2006
39. Lightweight Executability Analysis of Graph Transformation Rules
- Author
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Planas, Elena, primary, Cabot, Jordi, additional, Gomez, Cristina, additional, Guerra, Esther, additional, and Lara, Juan de, additional
- Published
- 2010
- Full Text
- View/download PDF
40. Estudio Calcográfico de 18 Muestras procedentes de la Perforación N°14, La Mejicana, La Rioja. Desde 109,2m hasta 180m
- Author
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Planas, Elena B. de
- Subjects
La Rioja (Argentina) ,622 (825.3) (047) ,La Mejicana, mina (Chilecito, La Rioja, Argentina) ,yacimiento ,Chilecito (La Rioja, Argentina) ,geología - Abstract
Fil: Planas, E. B. de. Servicio Geológico Nacional; Argentina
- Published
- 1976
41. Lightweight executability analysis of graph transformation rules
- Author
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Esther Guerra, Jordi Cabot, Cristina Gómez, Elena Planas, Juan de Lara, UAM. Departamento de Ingeniería Informática, Herramientas Interactivas Avanzadas (ING EPS-003), Universitat Oberta de Catalunya [Barcelona] (UOC), Modeling Technologies for Software Production, Operation, and Evolution (ATLANMOD), Laboratoire d'Informatique de Nantes Atlantique (LINA), Centre National de la Recherche Scientifique (CNRS)-Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Département informatique - EMN, Mines Nantes (Mines Nantes)-Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Universitat Politècnica de Catalunya [Barcelona] (UPC), Universidad Carlos III de Madrid [Madrid] (UC3M), Universidad Autonoma de Madrid (UAM), Planas, Elena, Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Département informatique - EMN, and Universidad Autónoma de Madrid (UAM)
- Subjects
Theoretical computer science ,Computer science ,[INFO.INFO-SE] Computer Science [cs]/Software Engineering [cs.SE] ,Context (language use) ,02 engineering and technology ,[INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE] ,computer.software_genre ,Domain (software engineering) ,Knowledge-based systems ,Unified Modeling Language ,Domain specific visual languages ,Data integrity ,0202 electrical engineering, electronic engineering, information engineering ,Graph transformation rules ,computer.programming_language ,Informática ,Graph rewriting ,Telecomunicaciones ,Programming language ,020207 software engineering ,Static analysis ,Graph grammars ,020201 artificial intelligence & image processing ,Knowledge based systems ,Model-driven architecture ,computer - Abstract
Proceedings of 2010 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC), Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. E. Planas, J. Cabot, C. Gómez, E. Guerra, and J. de Lara, "Lightweight Executability Analysis of Graph Transformation Rules", 2010 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC), Leganes, Spain, 2010, pp. 127 - 130, Domain Specific Visual Languages (DSVLs) play a cornerstone role in Model-Driven Engineering (MDE), where (domain specific) models are used to automate the production of the final application. Graph Transformation is a formal, visual, rule-based technique, which is increasingly used in MDE to express in-place model transformations like refactorings, animations and simulations. However, there is currently a lack of methods able to perform static analysis of rules, taking into account the DSVL meta-model integrity constraints. In this paper we propose a lightweight, efficient technique that performs static analysis of the weak executability of rules. The method determines if there is some scenario in which the rule can be safely applied, without breaking the meta-model constraints. If no such scenario exists, the method returns meaningful feedback that helps repairing the detected inconsistencies., Work funded by the Spanish Ministry of Science and Innovation through mobility grants JC2009-00015 and PR2009-0019, projects TIN2008-02081 and TIN2008-00444 and the R&D programme of the Madrid Community, project S2009/TIC-1650
- Published
- 2010
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