Search results for "Day"
showing 10 items of 753 documents
El boletín Faraday (1928-29) y las relaciones entre historia y didáctica de las ciencias
2021
Faraday ha sido considerada una de las primeras publicaciones especializadas en didáctica e historia de la ciencia en España. Sin embargo, hasta la fecha su recuperación y estudio se revelaba pendiente. A través del análisis inédito de esta publicación de principios del siglo xx, se abordan las relaciones entre historia y didáctica de las ciencias desde una mirada diacrónica. Dicho análisis ha puesto de manifiesto cómo la didáctica de las ciencias contribuyó a impulsar la forja disciplinar de la historia de la ciencia y cómo esta última nutrió a la didáctica de las ciencias de un amplio sustrato metodológico y epistemológico. Este análisis también ha ofrecido varios elementos de reflexión p…
Topological magneto-optical effects and their quantization in noncoplanar antiferromagnets
2018
Reflecting the fundamental interactions of polarized light with magnetic matter, magneto-optical effects are well known since more than a century. The emergence of these phenomena is commonly attributed to the interplay between exchange splitting and spin-orbit coupling in the electronic structure of magnets. Using theoretical arguments, we demonstrate that topological magneto-optical effects can arise in noncoplanar antiferromagnets due to the finite scalar spin chirality, without any reference to exchange splitting or spin-orbit coupling. We propose spectral integrals of certain magneto-optical quantities that uncover the unique topological nature of the discovered effect. We also find th…
Hydraulic kinetics of the graft union in different Olea europaea L. scion/rootstock combinations
2007
The hydraulic resistance of young olive trees grafted on rootstocks with contrasting size-controlling potential was measured 30, 90, 360 and 480 days after grafting. Olive (Olea europaea L.) clones inducing plant vigorous growth (Leccino ‘Minerva’, LM) or dwarfing (Leccino ‘Dwarf’, LD) were studied in different scion/rootstock combinations (LD/LD, LD/LM, LM/LD, LM/LM). Plants growing on LD root systems developed lower leaf surface areas (about 50% less) than plants grafted on LM rootstocks. Graft union represented the largest fraction (up to 85%) of whole-plant hydraulic resistance 30 days after grafting, and still represented an important fraction of it 2 months later (40–55%). Four-hundre…
¿Qué sabe el alumnado de secundaria sobre la Unión Europea? Implicaciones para el aprendizaje
2017
El desarrollo de la Dimensión Europea en la Educación es un objetivo vinculado a la construcción de la identidad europea y al ejercicio de una ciudadanía activa crítica y responsable. El artículo analiza el conocimiento de los estudiantes de Educación Secundaria Obligatoria sobre la Unión Europea. En el estudio participaron 705 alumnos de cinco centros de educación secundaria obligatoria de cuatro comunidades autónomas españolas. Se diseñó una prueba de veinticuatro ítems sobre: a) las instituciones europeas, b) la historia de la cooperación europea, c) la ciudadanía Europea, d) Europa en la vida cotidiana, e) la identidad social y cultural, y f) derechos humanos y responsabilidades. Los re…
Characterizing cognitive problem-solving strategies in patients’ everyday life: The case of patients with Type 1 diabetes
2021
Introduction:Numerous quantitative studies have shown the importance of executive functions (planning, attention, inhibition, and short-term memory) for diabetes treatment compliance. Those studies also point to the paucity of data on action strategies employed by persons with diabetes. The aim of this study is to characterize the action strategies used in six situations typically encountered by persons with Type 1 diabetes (no comorbidities).Methods:This qualitative multiple-case study concerns adult patients with no comorbidities. Eighteen patients were presented with six clinical vignettes portraying emblematic situations and then interviewed. After categorization, the 108 situations wer…
Implicit Learning of Regularities in Western Tonal Music by Self-Organization
2001
Western tonal music is a highly structured system whose regularities are implicitly learned in everyday life. A hierarchical self-organizing network simulates learning of tonal regularities by mere exposure to musical material. The trained network provides a parsimonious account of empirical findings on perceived tone, chord and key relationships and suggests activation as a unifying mechanism underlying a range of cognitive tasks.
SINGLE FACTOR STOCHASTIC MODELS WITH SEASONALITY APPLIED TO UNDERLYING WEATHER DERIVATIVES VARIABLES
2003
This paper estimates single factor stochastic models describing daily air temperature behaviour. We modify classical financial models to reflect temperature seasonality and fit them to a time series representing temperatures in Spain. The estimated models are used in Montecarlo simulations to obtain heating and cooling degree-days, which are used as an underlying reference in weather derivatives. The final goal of this work is to obtain an insight into weather derivative valuation, and so making it easier to manage economic activity risks closely related to temperature (i.e. oil, gas and electricity prices and volumes). En este trabajo se estiman modelos estocásticos unifactoriales que desc…
A framework for IoT service experiment platforms in smart-city environments
2016
Cities provide an excellent platform for gathering and detection of massive amount of data from cities and citizens. Emergence of new digital technologies inspires not only city governments but also city residents, researchers, companies and other stakeholders in discovering and creating new innovative solutions to solve urban challenges and improve peoples´ everyday life. Developing novel Internet of Things (IoT) solutions for cities and citizens requires facilities where IoT applications and services can be tested and experimented. The challenge for many smart-city test and experimentation platforms (TEPs), like living labs, has been the lack of sustainable value creation model. This has …
Human Factors Affecting the Patient’s Acceptance of Wireless Biomedical Sensors
2008
In monitoring arrhythmia, the quality of medical data from the ECG sensors may be enhanced by being based on everyday life situations. Hence, the development of wireless biomedical sensors is of growing interest, both to diagnose the heart patient, as well as to adjust the regimen. However, human factors such as emotional barriers and stigmatization, may affect the patient’s behavior while wearing the equipment, which in turn may influence quality of data. The study of human factors and patient acceptance is important both in relation to the development of such equipment, as well as in evaluating the quality of data gathered from the individual patient. In this paper, we highlight some impo…
Leisure, Social Capital and Life Turns in Deviant Youth
2017
The production of social capital in a specific area of everyday life such as leisure time and the different socio-cultural contexts it is experienced in is a very interesting research issue, especially in the light of certain pecific meanings of the notion of social capital, such as Bourdieu's or, more recently, Putnam's. Nonetheless, this research issue is scarcely taken into consideration in Italy. Albeit inexaustively, this paper intends to introduce this issue starting from a brief review on the generation of social capital in youth's leisure time contexts. In the first paragraph I problematize the notion of social capital as referred to leisure time "contexts" as well as analyze either…