Outside the library: Early career researchers and use of alternative information sources in pandemic times     

Eti Herman  David Nicholas  David Clark  Chérifa Boukacem-Zeghmouri  Blanca Rodríguez-Bravo  Abdullah Abrizah  David Sims  Anthony Watkinson  Jie Xu  Galina Serbina  Marzena Świgoń  Hamid R. Jamali  Carol Tenopir  Suzie Allard 《Learned Publishing》2023,36(2):141-155

Presents findings from a study into the attitudes and practices of pandemic-era early career researchers (ECRs) in regard to obtaining access to the formally published scholarly literature, which focused on alternative providers, notably ResearchGate and Sci-Hub. The study is a part of the Harbingers project that has been exploring the work lives and scholarly communication practices of ECRs in pre-pandemic times and during the pandemic, and utilizes data from two rounds of interviews with around 170 ECRs from the sciences and social sciences in eight countries. Findings show that alternative providers, as represented by ResearchGate and Sci-Hub, have become established and appear to be gaining ground. However, there are considerable country- and discipline-associated differences. ECRs' country-specific level of usage of the alternative providers is partly traceable to the adequacy of library provisions, although there are other factors at play in shaping ECRs' attitudes and practices, most notably convenience and time saving, as well as the fact that these platforms have become embedded in the scholarly dashboard. There is a dearth of evidence of the impact of the pandemic on ECRs' ways of obtaining scholarly papers.  相似文献   

Secondary School Students’ Errors in the Translation of Algebraic Statements     

Marta Molina  Susana Rodríguez-Domingo  María Consuelo Cañadas  Encarnación Castro 《International Journal of Science and Mathematics Education》2017,15(6):1137-1156

In this article, we present the results of a research study that explores secondary students’ capacity to perform translations of algebraic statements between the verbal and symbolic representation systems through the lens of errors. We classify and compare the errors made by 2 groups of students: 1 at the beginning of their studies in school algebra and another 1 completing their studies on algebra in compulsory education. This comparison allows us to detect errors which require specific attention in instruction due to its persistence and to identify errors that disappear as students advance in their study of algebra. The results and conclusions have a pedagogic value to inform instruction and also lead to backed conjectures and research questions to push forward research on student’s translation capacity and students’ knowledge of algebraic symbolism.  相似文献   

Chemical,Physicochemical, Nutritional,Microbiological, Sensory and Rehydration Characteristics of Instant Whole Beans (Phaseolus vulgaris)     

José Armando Ulloa  Silvia Jazmin Ibarra-Zavala  Silvia Patricia Ramírez-Salas  Petra Rosas-Ulloa  José Carmen Ramírez-Ramírez  Blanca Estela Ulloa-Rangel 《Food Technology and Biotechnology》2015,53(1):48-56

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Unravelling knowledge creation and management in educational organisations: barriers and enablers     

David?Rodríguez-GómezEmail author  Joaquín?Gairín 《知识管理研究与实践》2015,13(2):149-159

Knowledge Creation and Management (KCM) is one of the main strategies for fostering improvement in any kind of organisation, including educational organisations, on which this paper is focused. While KCM is being widely studied, little attention has been given to KCM in organisations supplying education, training and/or assessment services to learners (i.e., primary and secondary schools or higher education institutions, among others). From an educational management approach, the aim of this paper is to describe and analyse the factors that foster or inhibit KCM processes conducted within educational organisations. Professionals (n=84), moderators and managers or institutional leaders of four selected cases were surveyed and interviewed. Results show the importance of the main organisational and procedural factors (i.e., organisational values and goals, leadership, structure, culture, dynamics, Information and Communications Technologies, KCM processes and people) to improve KCM results in educational organisations.  相似文献   

Reference values and improvement of aerodynamic drag in professional cyclists   总被引：4，自引：1，他引：3  

García-López J  Rodríguez-Marroyo JA  Juneau CE  Peleteiro J  Martínez AC  Villa JG 《Journal of sports sciences》2008,26(3):277-286

The aims of this study were to measure the aerodynamic drag in professional cyclists, to obtain aerodynamic drag reference values in static and effort positions, to improve the cyclists' aerodynamic drag by modifying their position and cycle equipment, and to evaluate the advantages and disadvantages of these modifications. The study was performed in a wind tunnel with five professional cyclists. Four positions were assessed with a time-trial bike and one position with a standard racing bike. In all positions, aerodynamic drag and kinematic variables were recorded. The drag area for the time-trial bike was 31% higher in the effort than static position, and lower than for the standard racing bike. Changes in the cyclists' position decreased the aerodynamic drag by 14%. The aero-helmet was not favourable for all cyclists. The reliability of aerodynamic drag measures in the wind tunnel was high (r > 0.96, coefficient of variation < 2%). In conclusion, we measured and improved the aerodynamic drag in professional cyclists. Our results were better than those of other researchers who did not assess aerodynamic drag during effort at race pace and who employed different wheels. The efficiency of the aero-helmet, and the validity, reliability, and sensitivity of the wind tunnel and aerodynamic field testing were addressed.  相似文献   

A fuzzy bicriteria approach for journal deselection in a hospital library     

María Luisa Lpez-Avello  María Victoria Rodríguez-Uría  Blanca Prez-Gladish  Amelia Bilbao-Terol  Mar Arenas-Parra 《Library Collections, Acquisitions, and Technical Services》2007,31(3-4):138-160

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Gender and socioeconomic status differences in university students’ perception of social support     

Carolina?TinajeroEmail author  Zeltia?Martínez-López  Ma?Soledad?Rodríguez  Ma?Adelina?Guisande  Ma?Fernanda?Páramo 《European Journal of Psychology of Education - EJPE》2015,30(2):227-244

Perceived social support has been shown to be one of the most important protective factors for emerging adult students during their transition to university. However, the relationships between perceived social support and dimensions of gender and family background, which have been shown to affect adjustment to college life, remain unexplored. The current study analyzes the effect of gender, parents’ education, and family income level on social support perceived by Spanish university students. The sample consisted of 575 women and 280 men, of average age 18.02 years (SD?=?0.52) enrolled in the first year of degree courses at the University of Santiago de Compostela (Spain). Three measures were used to assess various facets of perceived social support, namely perceived acceptance, social provisions, and support availability and satisfaction. Gender differences were identified for several perceived social support dimensions; women reported a wider social network, which should cover more diverse needs of social support. In addition, differences related to mother’s education and family income level emerged for the availability of support and perceived acceptance. The results highlight the different role of gender and family background in several dimensions of perceived social support during the transition to emerging adulthood.  相似文献   

Attitude and commitment to school of successful secondary school students / Actitud y compromiso hacia la escuela en estudiantes de secundaria considerados de éxito escolar     

Nieves Blanco  Carmen Rodríguez-Martínez 《Infancia y Aprendizaje》2015,38(3):542-568

In this article, we analyse the attitude toward school that successful students of post-compulsory education possess. We understand school success as a concept that takes into account academic results, but also includes the desire to continue studying, while often overcoming difficulties at school. The data were taken from a sample of 26 students (12 girls and 14 boys) enrolled in Baccalaureate studies and vocational training. It was collected from detailed interviews, context questionnaires and the photolanguage technique. The results show that students are clearly committed to education, which takes the form of positive attitudes toward schoolwork and tasks (perseverance, effort, respect for the rules) and to the development of a defined life project and a high-level of satisfaction with their education. Baccalaureate students, particularly girls, more clearly express these traits.  相似文献   

Children’s and adolescents’ thoughts on pollution: cognitive abilities required to understand environmental systems     

Manuel Rodríguez  Raquel Kohen  Juan Delval 《Environmental Education Research》2015,21(1):76-91

Pollution phenomena are complex systems in which different parts are integrated by means of causal and temporal relationships. To understand pollution, children must develop some cognitive abilities related to system thinking and temporal and causal inferential reasoning. These cognitive abilities constrain and guide how children understand pollution processes. Hence, ascertaining whether changes among children’s ideas of pollution are related to system thinking and inferential reasoning abilities could be useful in improving environmental education. Eighty participants between 9 and 16 years old were interviewed to evaluate how children explain different aspects of pollution-related systems. From the explanations found in these interviews, three progressive epistemic structures were reconstructed. The three epistemic structures differ in the type of causal and temporal relationship established by the participants and in the mechanisms that the participants used to relate the pollutant to its effects.  相似文献   

Secure chaotic communication based on extreme multistability     

AN Pisarchik  R Jaimes-Reátegui  C Rodríguez-Flores  JH García-López  G Huerta-Cuellar  FJ Martín-Pasquín 《Journal of The Franklin Institute》2021,358(4):2561-2575

Extreme multistability is the coexistence of a large number of attractors which can be reached by varying initial conditions. In this paper we show how this fascinating phenomenon can be used for secure communication. The main advantage of the communication system based on extreme multistability over a conventional chaos-based communication system is its exceptionally high security. The proposed system consists of two identical six-order oscillators; one in the transmitter and another one in the receiver, each exhibiting the coexistence of a large number of chaotic attractors. The oscillators are synchronized using a private channel through one of the system variables, while the information is transmitted via a public channel through another variable. The information is encrypted by varying the initial condition of one of the state variables in the transmitter using a chaotic map, adhering message packages in a staggered form to the coexisting attractors within the same time series of another state variable, which leads to switching among the coexisting chaotic attractors. To ensure communication security, the duration of the packages is shorter than synchronization time, so that synchronization attacks are ineffective.  相似文献