Search results for "Ink"

Estudio de la relación entre la creencia en las pseudociencias y la alfabetización científica del alumnado de Bachillerato

2021

La presencia de ideas pseudocientíficas en el alumnado y el bajo nivel de alfabetización científica ponen en relieve un problema de insuficiencia en las metodologías de enseñanza de las ciencias. El objetivo de este estudio es analizar la relación entre el nivel de alfabetización científica y el grado de creencia en pseudociencia en el alumnado preuniversitario como una forma de evaluar la preparación científica que han recibido durante la secundaria. Para ello se pasó un cuestionario a 90 estudiantes del bachillerato Científico-tecnológico y Humanidades y Ciencias Sociales en el que se evalúan el grado de acuerdo entre diversas afirmaciones pseudocientíficas y el nivel de alfabetización ci…

Design and Characterization of Effective Ag, Pt and AgPt Nanoparticles to H₂O₂ Electrosensing from Scrapped Printed Electrodes.

2019

The use of disposable screen-printed electrodes (SPEs) has extraordinarily grown in the last years. In this paper, conductive inks from scrapped SPEs were removed by acid leaching, providing high value feedstocks suitable for the electrochemical deposition of Ag, Pt and Ag core-Pt shell-like bimetallic (AgPt) nanoparticles, onto screen-printed carbon electrodes (ML@SPCEs, M = Ag, Pt or AgPt, L = metal nanoparticles from leaching solutions). ML@SPCEs were characterized by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The results were compared to those obtained when metal nanoparticles were synthesised using standard solutions of metal salts (MS@…

The use of very high resolution images for studying Posidonia oceanica reefs

2020

Posidonia oceanica is an endemic Mediterranean seagrass that forms wide and dense meadows from the surface up to about 40 m depth. This species can develop a biogenic structure called matte, a typical terraced formation built up by itself, consisting of intertwined rhizomes, roots and sediment, which may allow shoots to reach the sea surface forming reefs (récif barrière), considered natural monuments. Posidonia oceanica reefs are particularly exposed to the ongoing increase in temperature and in storm frequency and intensity due to climate change, with negative repercussions on their conservation. Much more attention must be paid to the implementation of monitoring tools able to detect ear…

The Associations between Physical Activity and Body-Esteem in 15-Year-Old Adolescents : A Cross-Sectional Study from Finland

2021

Purpose: Physical activity promotes a positive physical self-image, but less is known about whether the positive effect covers the general self-evaluation of adolescent appearance. This study aimed to further explore the associations between physical activity and body-esteem in Finnish adolescents, via a country-representative cross-sectional study design. Methods: The data for the study were drawn from the Finnish component of the Health Behaviour in School-aged Children (HBSC) study (2014), using surveys from 15-year-old adolescents (n=1956, mean age 15.8 years) from 122 schools. Self-evaluations of body or appearance were measured by the Body-Esteem Scale for Adolescents and Adults (BESA…

Dynamic assessment of word derivational knowledge: Tracing the development of a learner

2016

The present paper reports on a case study that explored the applicability of dynamic assessment (DA) for promoting learners’ word derivational knowledge in English as a second or a foreign language (L2). One learner’s performance on tasks assessing his word derivational knowledge was measured four times. The first two measurements were conducted before and after three weekly human-mediated DA sessions and the last two, which took place a year and a half later, before and after three weekly computerised DA sessions. Think aloud protocols and interviews were used to trace changes in the learner’s use of strategies and knowledge sources. The results revealed that following the dynamic assessme…

Trait Self-Control, Social Cognition Constructs, and Intentions: Correlational Evidence for Mediation and Moderation Effects in Diverse Health Behavi…

2019

Background: We examined effects of trait self‐control, constructs from social cognition theories, and intentions on health behaviours. Trait self‐control was expected to predict health behaviour indirectly through theory constructs and intentions. Trait self‐control was also predicted to moderate the intention–behaviour relationship. Methods: Proposed effects were tested in six datasets for ten health‐related behaviours from studies adopting prospective designs. Participants (N = 3,249) completed measures of constructs from social cognition theories and self‐control at an initial time point and self‐reported their behaviour at follow‐up. Results: Results revealed indirect effects of self‐co…

The Dynamic Relationship between Response Processes and Self-Regulation in Critical Thinking Assessments

2021

Our aim was to explore higher education students’ response and self-regulatory processes plus the relationship between these, as evidenced in two types of performance-based critical thinking tasks included in the Collegiate Learning Assessment (CLA+) International instrument. The data collection consisted of 20 cognitive laboratories. The data were analyzed using a qualitative approach. The tasks were found to trigger different response and self-regulatory processes. Overall, the performance task evoked more holistic processes than the selected-response questions, in which students’ processes were more question-oriented. The results also indicated the entanglement of students’ response and …

Toward a stage theory of adaptive social media use : explaining change in facebook use

2018

Existing research on information technology (IT) use has shown that post- adoptive technology use is not a stable but a dynamic phenomenon in which users apply various adaptation behaviors. Users reshape the technology (IT adaptation), adjust their work routines (task adaptation), and change their own behavior (user adaptation) according to the changes induced by IT. Today, people use increasingly social media and other IT for personal purposes. Facebook (FB) is a good example of personal IT that people voluntarily use for years and has become an integral part of people’s everyday lives. Despite extensive research on IT use and IT/user adaptation, we know little about the dynamics of post-a…

Fitness in male black grouse (Tetrao tetrix) : effects of life histories and sexual selection on male lifetime mating success

2013

SingleChannelNet : A model for automatic sleep stage classification with raw single-channel EEG

2022

In diagnosing sleep disorders, sleep stage classification is a very essential yet time-consuming process. Various existing state-of-the-art approaches rely on hand-crafted features and multi-modality polysomnography (PSG) data, where prior knowledge is compulsory and high computation cost can be expected. Besides, it is a big challenge to handle the task with raw single-channel electroencephalogram (EEG). To overcome these shortcomings, this paper proposes an end-to-end framework with a deep neural network, namely SingleChannelNet, for automatic sleep stage classification based on raw single-channel EEG. The proposed model utilizes a 90s epoch as the textual input and employs two multi-conv…