Comparative study of AR versus video tutorials for minor maintenance operations

[EN] Augmented Reality (AR) has become a mainstream technology in the development of solutions for repair and maintenance operations. Although most of the AR solutions are still limited to specific contexts in industry, some consumer electronics companies have started to offer pre-packaged AR solutions as alternative to video-based tutorials (VT) for minor maintenance operations. In this paper, we present a comparative study of the acquired knowledge and user perception achieved with AR and VT solutions in some maintenance tasks of IT equipment. The results indicate that both systems help users to acquire knowledge in various aspects of equipment maintenance. Although no statistically significant differences were found between AR and VT solutions, users scored higher on the AR version in all cases. Moreover, the users explicitly preferred the AR version when evaluating three different usability and satisfaction criteria. For the AR version, a strong and significant correlation was found between the satisfaction and the achieved knowledge. Since the AR solution achieved similar learning results with higher usability scores than the video-based tutorials, these results suggest that AR solutions are the most effective approach to substitute the typical paper-based instructions in consumer electronics.This work has been supported by Spanish MINECO and EU ERDF programs under grant RTI2018-098156-B-C55.Morillo, P.; García García, I.; Orduña, JM.; Fernández, M.; Juan, M. (2020). Comparative study of AR versus video tutorials for minor maintenance operations. Multimedia Tools and Applications. 79(11-12):7073-7100. https://doi.org/10.1007/s11042-019-08437-9S707371007911-12Ahn J, Williamson J, Gartrell M, Han R, Lv Q, Mishra S (2015) Supporting healthy grocery shopping via mobile augmented reality. 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Introducción de metodologías de aprendizaje basado en problemas mediante tecnologías multimedia

La propuesta de trabajar por competencias en lugar de hacerlo como se hacía tradicionalmente, por objetivos, ha hecho proliferar las propuestas y alternativas metodológicas para favorecer un cambio en la Educación Superior. Una de estas metodologías es el aprendizaje basado en problemas (ABP). El ABP es una metodología de aprendizaje en la cual el punto de partida es un problema construido por el profesor que permite al estudiante identificar necesidades para comprender mejor ese problema, identificar principios que sustentan el conocimiento y cumplir objetivos de aprendizaje relacionados con cada porción del contenido de la materia. En el caso de las tecnologías de la información y las comunicaciones es especialmente relevante, ya que permite desarrollar simultáneamente conocimientos teóricos y estrategias para resolver problemas prácticos en pequeños grupos, similares a los que se encuentran en la práctica profesional. La organización en grupos de trabajo permite además la creación de contenido de carácter longitudinal y transversal al grupo. El contenido transversal permite el uso de técnicas de aprendizaje colaborativo, que se pueden combinar con tecnologías multimedia en la web 2.0 para facilitar su difusión entre grupos y a la comunidad en general. En este artículo se describe la experiencia docente en la asignatura de Arquitectura de Redes de Computadores impartida en los grados de Ingeniería Informática, Ingeniería Electrónica e Ingeniería Electrónica de Telecomunicaciones de la Universitat de Valencia. En ella, los alumnos de los tres grados han sido expuestos a la metodología de ABP y de aprendizaje colaborativo basado en tecnologías multimedia. Los contenidos de los grados se han adaptado adecuadamente de forma transversal permitiendo desarrollar los contenidos teórico prácticos. Los resultados de esta experiencia docente han sido publicados en la web, así como los materiales generados por los grupos de alumnos. Todo el proceso ha sido supervisado por los profesores de la asignatura, obteniendo una retroalimentación continua acerca de su trabajo por medio de comentarios y evaluaciones realizados tanto por parte de los profesores como por alumnos externos al grupo de trabajo.The introduction of skills-based learning instead of the more traditional goal-based learning has given rise to novel teaching proposals and methodological alterna tives that favor a change in the context of the European Higher Education Area. One of these methods is problem/project-based learning (PBL). PBL is a learning methodology in which the starting point is a problem constructed by the teacher, which allows students to identify needs to better understand the problem/situation, identify principles underpinning knowledge and meet learning objectives related to each content part. In the case of Information and Communications technologies it is especially relevant, since it allows the concurrent development of theoretical knowledge and strategies for solving problems in small groups, similar to those found in practice. This methodolgy can also be combined with the collaborative learning and the use of multimedia and web technologies for presenting the work done. It improves both the degree of motivation of the students and the degree of disseminations of the works. In this paper, we describe the teaching experience in the course of Computer Networks Architecture taught in undergraduate degrees of Computer Engineering, Telematics Engineering and Telecommunications Electronic Engineering from the University of Valencia. The students have been divided into working groups, and they have developed digital objects of learning that have been freely disseminated through Internet. This methodology has provided the students not only with collaborative learning within each group, but also with inter-group collaborative learning. Each group obtained feedback from the comments and evaluations of other students and the course teachers.Universidad de Granada: Departamento de Arquitectura y Tecnología de Computadores; Vicerrectorado para la Garantía de la Calidad

Nature s Top 100 Re-Revisited

"This is the peer reviewed version of the following article: Martín-Martín, A., Ayllon, J. M., López-Cózar, E. D., & Orduna-Malea, E. (2015). Nature's top 100 Re-revisited. JASIST, 66(12), 2714., which has been published in final form at http://doi.org/10.1002/asi.23570. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."To mark the 50th anniversary of the Science Citation Index, Nature published a list of the 100 most-cited papers of all time. It also included an alternative ranking from data provided by Google Scholar, which, as this letter illustrates, contains certain inconsistencies. This does not, however, diminish the usefulness of Google Scholar, not only in identifying the most-cited articles of all time, but also in reflecting the impact of other document types (especially books), thus redefining the concept of academic impact. Keywords:Martín-Martín, A.; Ayllón, JM.; Delgado López-Cózar, E.; Orduña Malea, E. (2015). Nature s Top 100 Re-Revisited. Journal of the American Society for Information Science and Technology. 66(12):2714-2714. doi:10.1002/asi.23570271427146612Bornmann , L. Nature's top 100 revisited. Journal of the Association for Information Science and Technology http://www.lutz-bornmann.de/icons/top_100.pdfGarfield , E. 2005 The agony and the ecstasy-the history and meaning of the Journal Impact Factor http://www.garfield.library.upenn.edu/papers/jifchicago2005.pdfMartin-Martin , A. Orduna-Malea , E. Ayllon , J.M. Delgado Lopez-Cozar , E. 2014 Does Google Scholar contain all highly cited documents (1950-2013)? http://arxiv.org/abs/1410.8464Van Noorden, R., Maher, B., & Nuzzo, R. (2014). The top 100 papers. Nature, 514(7524), 550-553. doi:10.1038/514550

The lost academic home: institutional affiliation links in Google Scholar Citations

This article is (c) Emerald Group Publishing and permission has been granted for this version to appear here (please insert the web address here). Emerald does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Emerald Group Publishing Limited[EN] Purpose - Google Scholar Citations (GSC) provides an institutional affiliation link which groups together authors who belong to the same institution. The purpose of this paper is to ascertain whether this feature is able to identify and normalize all the institutions entered by the authors, and whether it is able to assign all researchers to their own institution correctly. Design/methodology/approach - Systematic queries to GSC's internal search box were performed under two different forms (institution name and institutional e-mail web domain) in September 2015. The whole Spanish academic system (82 institutions) was used as a test. Additionally, specific searches to companies (Google) and world-class universities were performed to identify and classify potential errors in the functioning of the feature. Findings - Although the affiliation tool works well for most institutions, it is unable to detect all existing institutions in the database, and it is not always able to create a unique standardized entry for each institution. Additionally, it also fails to group all the authors who belong to the same institution. A wide variety of errors have been identified and classified. Research limitations/implications - Even though the analyzed sample is good enough to empirically answer the research questions initially proposed, a more comprehensive study should be performed to calibrate the real volume of the errors. Practical implications - The discovered affiliation link errors prevent institutions from being able to access the profiles of all their respective authors using the institutions lists offered by GSC. Additionally, it introduces a shortcoming in the navigation features of Google Scholar which may impair web user experience. Social implications - Some institutions (mainly universities) are under-represented in the affiliation feature provided by GSC. This fact might jeopardize the visibility of institutions as well as the use of this feature in bibliometric or webometric analyses. Originality/value - This work proves inconsistencies in the affiliation feature provided by GSC. A whole national university system is systematically analyzed and several queries have been used to reveal errors in its functioning. The completeness of the errors identified and the empirical data examined are the most exhaustive to date regarding this topic. Finally, some recommendations about how to correctly fill in the affiliation data (both for authors and institutions) and how to improve this feature are provided as well.Orduña Malea, E.; Ayllón, JM.; Martín-Martín, A.; Delgado-López-Cózar, E. (2017). The lost academic home: institutional affiliation links in Google Scholar Citations. Online Information Review. 41(6):762-781. doi:10.1108/OIR-10-2016-0302S76278141

The silent fading of an academic search engine: the case of Microsoft Academic Search

Purpose - The purpose of this paper is to describe the obsolescence process of Microsoft Academic Search (MAS) as well as the effects of this decline in the coverage of disciplines and journals, and their influence in the representativeness of organizations. Design/methodology/approach - The total number of records and those belonging to the most reputable journals (1,762) and organizations (346) according to the Field Rating indicator in each of the 15 fields and 204 sub-fields of MAS, have been collected and statistically analysed in March 2014, by means of an automated querying process via http, covering academic publications from 1700 to present. Findings - MAS has no longer been updated since 2013, although this phenomenon began to be glimpsed in 2011, when its coverage plummeted. Throughout 2014, indexing of new records is still ongoing, but at a minimum rate, without following any apparent pattern. Research limitations/implications - There are also retrospective records being indexed at present. In this sense, this research provides a picture of what MAS offered during March 2014 being queried directly via http. Practical implications - The unnoticed obsolescence of MAS affects to the quality of the service offered to its users (both those who engage in scientific information seeking and also those who use it for quantitative purposes). Social implications - The predominance of Google Scholar (GS) as monopoly in the academic search engines market as well as the prevalence of an open construction model (GS) vs a closed model (MAS). Originality/value - A complete longitudinal analysis of disciplines, journals and organizations on MAS has been performed for the first time identifying an unnoticed obsolescence. Any public explanation or disclaimer note has been announced from the responsible company, something incomprehensible given its implications for the reliability and validity of bibliometric data provided on disciplines, journals, authors and congress as well as their fair representation on the academic search engine.This research was funded under Project HAR2011-30383-C02-02 from Direccion General de Investigacion y Gestion del Plan Nacional de I+D+I (Ministry of Economy and Competitiveness) and Project APOSTD/2013/002 from the Regional Ministry of Education, Culture and Sport (Generalitat Valenciana) in Spain.Orduña Malea, E.; Martín-Martín, A.; Ayllón, JM.; Delgado-López-Cózar, E. (2014). The silent fading of an academic search engine: the case of Microsoft Academic Search. Online Information Review. 38(7):936-953. https://doi.org/10.1108/OIR-07-2014-0169S936953387Beel, J. , Gipp, B. and Wilde, E. (2010), “Academic search engine optimization (ASEO)”, Journal of Scholarly Publishing, Vol. 41 No. 2, pp. 176-190.Butler, D. (2011), “Computing giants launch free science metrics: new Google and Microsoft services promise to democratize citation data”, Nature, Vol. 476 No. 7358, p.Carlson, S. (2006), “Challenging Google, Microsoft unveils a search tool for scholarly articles”, Chronicle of Higher Education, Vol. 52 No. 33, p.Delgado-López-Cózar, E., & Cabezas-Clavijo, Á. (2013). Ranking journals: could Google Scholar Metrics be an alternative to Journal Citation Reports and Scimago Journal Rank? Learned Publishing, 26(2), 101-113. doi:10.1087/20130206Delgado López-Cózar, E., Robinson-García, N., & Torres-Salinas, D. (2013). The Google scholar experiment: How to index false papers and manipulate bibliometric indicators. Journal of the Association for Information Science and Technology, 65(3), 446-454. doi:10.1002/asi.23056Haley, M. R. (2014). Ranking top economics and finance journals using Microsoft academic search versus Google scholar: How does the new publish or perish option compare? Journal of the Association for Information Science and Technology, 65(5), 1079-1084. doi:10.1002/asi.23080Haustein, S., Peters, I., Bar-Ilan, J., Priem, J., Shema, H., & Terliesner, J. (2014). Coverage and adoption of altmetrics sources in the bibliometric community. Scientometrics, 101(2), 1145-1163. doi:10.1007/s11192-013-1221-3Jacsó, P. (2005), “As we may search – comparison of major features of the Web of Science, Scopus, and Google Scholar”, Current Science, Vol. 89 No. 9, pp. 1537-1547.Jacsó, P. (2008). Google Scholar revisited. Online Information Review, 32(1), 102-114. doi:10.1108/14684520810866010Jacsó, P. (2011). The pros and cons of Microsoft Academic Search from a bibliometric perspective. Online Information Review, 35(6), 983-997. doi:10.1108/14684521111210788Jacsó, P. (2012). Google Scholar Metrics for Publications. Online Information Review, 36(4), 604-619. doi:10.1108/14684521211254121Khabsa, M. and Giles, C.L. (2014), “The number of scholarly documents on the public web”, PloS One, Vol. 9 No. 5, p.Labbé, C. (2010), “Ike Antkare one of the greatest stars in the scientific firmament”, ISSI Newsletter, Vol. 6 No. 1, pp. 48-52.Orduña-Malea, E., & Delgado López-Cózar, E. (2013). Google Scholar Metrics evolution: an analysis according to languages. Scientometrics, 98(3), 2353-2367. doi:10.1007/s11192-013-1164-8Ortega, J. L. (2014). Influence of co-authorship networks in the research impact: Ego network analyses from Microsoft Academic Search. Journal of Informetrics, 8(3), 728-737. doi:10.1016/j.joi.2014.07.001Ortega, J. L., & Aguillo, I. F. (2013). Institutional and country collaboration in an online service of scientific profiles: Google Scholar Citations. Journal of Informetrics, 7(2), 394-403. doi:10.1016/j.joi.2012.12.007Ortega, J. L., & Aguillo, I. F. (2014). Microsoft academic search and Google scholar citations: Comparative analysis of author profiles. Journal of the Association for Information Science and Technology, 65(6), 1149-1156. doi:10.1002/asi.23036Van Noorden, R. (2014). Online collaboration: Scientists and the social network. Nature, 512(7513), 126-129. doi:10.1038/512126

Proceedings Scholar Metrics: H Index of proceedings on Computer Science, Electrical & Electronic Engineering, and Communications according to Google Scholar Metrics (2011-2015)

The objective of this report is to present a list of proceedings (conferences, workshops, symposia, meetings) in the areas of Computer Science, Electrical & Electronic Engineering, and Communications covered by Google Scholar Metrics and ranked according to their h-index. Google Scholar Metrics only displays publications that have published at least 100 papers and have received at least one citation in the last five years (2010-2014). The searches were conducted between the 7th and 12th of December, 2016. A total of 1634 proceedings have been identified.Martín-Martín, A.; Ayllón, JM.; Orduña Malea, E.; Delgado López-Cózar, E. (2016). Proceedings Scholar Metrics: H Index of proceedings on Computer Science, Electrical & Electronic Engineering, and Communications according to Google Scholar Metrics (2011-2015). http://hdl.handle.net/10251/11237

Reliability and validity of the Severe Impairment Battery, short form (SIB-s), in patients with dementia in Spain

Las personas con demencia progresiva evolucionan hacia un estado donde los tests neuropsicológicos tradicionales dejan de ser eficaces. La batería de evaluación del deterioro grave, en su forma completa (SIB) y abreviada (SIB-s), se desarrolló para evaluar el estado cognitivo de pacientes con demencia avanzada. Objetivo. Evaluar los atributos psicométricos de la SIB-s en población española. Pacientes y métodos. Estudio transversal de 127 pacientes con demencia (86,6%, mujeres; edad media: 82,6 ± 7,5 años) evaluados con la SIB-s y las siguientes medidas: escala de deterioro global, miniexamen cognitivo (MEC), miniexamen del estado mental grave (sMMSE), índice de Barthel y escala del estado funcional. Resultados. La puntuación media total de la SIB-s fue de 19,1 ± 15,34 (rango: 0-48). Efectos suelo y techo < 20%. El análisis factorial identificó un único factor que explica el 68% de la varianza total de la escala. La consistencia interna fue alta (α de Cronbach: 0,96). La correlación ítem-total corregida osciló entre 0,27 y 0,83, y la homogeneidad de los ítems fue de 0,43. La fiabilidad test-retest e interevaluador fue satisfactoria (coeficiente de correlación intraclase: 0,96 y 0,95, respectivamente), así como la validez de constructo convergente con otras medidas cognitivas (MEC: 0,83; sMMSE: 0,9). La SIB-s mostró una correlación moderada con escalas cognitivas de dependencia funcional (índice de Barthel: 0,48; FAST: –0,74). El error estándar de la medida fue de 3,07 para el total de la escala. Conclusiones. La SIB-s es un instrumento fiable y válido, relativamente breve, para evaluar a pacientes con demencia avanzada en la población española.People with progressive dementia evolve into a state where traditional neuropsychological tests are not effective. Severe Impairment Battery (SIB) and short form (SIB-s) were developed for evaluating the cognitive status in patients with severe dementia. Aim. To evaluate the psychometric attributes of the SIB-s in patients with severe dementia. Patients and methods. 127 institutionalized patients (female: 86.6%; mean age: 82.6 ± 7.5 years-old) with dementia were assessed with the SIB-s, the Global Deterioration Scale (GDS), Mini-Mental State Examination (MMSE), Severe MiniMental State Examination (sMMSE), Barthel Index and FAST. Results. SIB-s acceptability, reliability, validity and precision were analyzed. The mean total score for scale was 19.1 ± 15.34 (range: 0-48). Floor effect was 18.1%, only marginally higher than the desirable 15%. Factor analysis identified a single factor explaining 68% of the total variance of the scale. Cronbach’s α coefficient was 0.96 and the item-total corrected correlation ranged from 0.27 to 0.83. The item homogeneity value was 0.43. Test-retest and inter-rater reliability for the total score was satisfactory (ICC: 0.96 and 0.95, respectively). The SIB-s showed moderate correlation with functional dependency scales (Barthel Index: 0.48, FAST: –0.74). Standard error of measurement was 3.07 for the total score. Conclusions. The SIB-s is a reliable and valid instrument for evaluating patients with severe dementia in the Spanish population of relatively brief instruments

A new parallel pipeline for DNA methylation analysis of long reads datasets.

BACKGROUND: DNA methylation is an important mechanism of epigenetic regulation in development and disease. New generation sequencers allow genome-wide measurements of the methylation status by reading short stretches of the DNA sequence (Methyl-seq). Several software tools for methylation analysis have been proposed over recent years. However, the current trend is that the new sequencers and the ones expected for an upcoming future yield sequences of increasing length, making these software tools inefficient and obsolete. RESULTS: In this paper, we propose a new software based on a strategy for methylation analysis of Methyl-seq sequencing data that requires much shorter execution times while yielding a better level of sensitivity, particularly for datasets composed of long reads. This strategy can be exported to other methylation, DNA and RNA analysis tools. CONCLUSIONS: The developed software tool achieves execution times one order of magnitude shorter than the existing tools, while yielding equal sensitivity for short reads and even better sensitivity for long reads

Índice H de las Revistas Científicas Españolas según Google Scholar Metrics (2010-2014)

Se presentan rankings por campos científicos y disciplinas de las revistas científicas españolas que figuran en Google Scholar Metrics (GSM). Se ordenan de acuerdo con el índice h que es el indicador bibliométrico adoptado por Google. Se pretende con este trabajo comprobar la amplitud en la cobertura que posee Google Scholar Metrics de las revistas científicas españolas. Los dos criterios utilizados por Google Scholar Metrics para incluir revistas en su producto son: contar con 100 trabajos publicados y poseer al menos una cita. Las búsquedas bibliográficas se efectuaron entre el 8 y el 10 de julio de 2015. Se han identificado 1069 revistas, de las que 560 son de Ciencias Sociales, 248 de Arte y Humanidades, 142 de Ciencias de la Salud y 119 de Ciencias Naturales e Ingenierías.Ayllón, JM.; Martín-Martín, A.; Orduña Malea, E.; Delgado López-Cózar, E. (2015). Índice H de las Revistas Científicas Españolas según Google Scholar Metrics (2010-2014). http://hdl.handle.net/10251/11238

Índice H de las Revistas Científicas Españolas según Google Scholar Metrics (2011-2015)

Se presentan rankings por campos científicos y disciplinas de las revistas científicas españolas que figuran en Google Scholar Metrics (GSM). Se ordenan de acuerdo con el índice h que es el indicador bibliométrico adoptado por Google. Se pretende con este trabajo comprobar la amplitud en la cobertura que posee Google Scholar Metrics de las revistas científicas españolas. Los dos criterios utilizados por Google Scholar Metrics para incluir revistas en su producto son: contar con 100 trabajos publicados y poseer al menos una cita. Las búsquedas bibliográficas se efectuaron entre el 18 y el 21 de julio de 2016. Se han identificado 1299 revistas, de las que 645 son de Ciencias Sociales, 337 de Arte y Humanidades, 177 de Ciencias de la Salud y 140 de Ciencias Naturales e Ingenierías.Ayllón, JM.; Martín-Martín, A.; Orduña Malea, E.; Delgado López-Cózar, E. (2016). Índice H de las Revistas Científicas Españolas según Google Scholar Metrics (2011-2015). http://hdl.handle.net/10251/11237