Investigating the Links Between Students’ Learning Engagement and Modeling Competence in Computer-Supported Modeling-Based Activities     

Wang  Ya-Joe  Lee  Silvia Wen-Yu  Liu  Chen-Chung  Lin  Pai-Chuan  Wen  Cai-Ting 《Journal of Science Education and Technology》2021,30(6):751-765

Journal of Science Education and Technology - The purpose of this study was to understand how students engage in computer-supported modeling-based activities (CSMBAs), and the relationship between...  相似文献   

Effect of Chitosan Nanoparticles Incorporating Antioxidants from Salvia hispanica L. on the Amaranth Flour Films     

Gema Morales-Oln  María Antonieta Ríos-Corripio  Aleida Selene Hernndez-Czares  Placido Zaca-Morn  Silvia Luna-Surez  Marlon Rojas-Lpez 《Food Technology and Biotechnology》2022,60(1):52

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Using Megaplanning in CSO Projects— Bringing Social Sectors Together for Measurable and Sustainable Social Impact     

Silvia Uranga  Mariana C. Lucellas 《Performance Improvement Quarterly》2005,18(3):111-116

ABSTRACT Civil Society Organizations (CSO) can improve their effectiveness and add measurable value to society by using a megaplanning approach as the guiding criteria for their organizational planning. This article shows how Asociación Conciencia, a leading Argentinean CSO, has used megaplanning to clarify its vision, mission, align its goals and programs and update its mission and programs over more than twenty years of critical social changes in Argentina.  相似文献   

Event,currere, and the ignorant schoolmaster     

Morelli  Silvia 《Prospects》2021,51(1-3):149-160

PROSPECTS - The Covid-19 pandemic has transformed the higher education systems in ways that make visible problems that already existed but that previously were not fully noticed. The pandemic can...  相似文献   

Time-course of running treadmill adaptation in novice treadmill runners     

Laura Simoni  Guido Pasquini  Silvia Pancani  Federica Vannetti  Claudio Macchi  Silvia Pogliaghi 《Journal of sports sciences》2020,38(20):2321-2328

ABSTRACT

Studies on running biomechanics and energetics are usually conducted on a treadmill. To ensure that locomotion on a treadmill is comparable to locomotion overground, participants need to be expert in the use of the device. This study aimed to identify the number and duration of sessions needed to obtain stable measurements for spatiotemporal and metabolic parameters in unexperienced treadmill runners. Fourteen male recreational runners performed three 15-min treadmill running trials in different days at a submaximal speed. Spatiotemporal and metabolic parameters were registered at minutes: 5, 10, 15 and their within-trial and between-trial changes were analysed using a two-way repeated measures ANOVA and Bonferroni post-hoc test. Within-trial differences were found in step frequency (decreased over time), Step Length and Contact Time (increased), reaching stability at different time points. Ventilator parameters increased, reaching stability after 5–10 min, while heart rate increased progressively over time. The only between-trial differences were an increase in step length and a decrease in step frequency at min 1, between trials 1 and 3. In conclusion, at least three running trials of 15 min are required to familiarize with the device. The last 5 min of the third trial can be regarded as stable measurements.  相似文献   

Study and Conservation of the St. Nicola's Basilica Mosaics (Bari,Italy) by Photogrammetric Survey: Mapping of Polychrome Marbles,Decorative Patterns and Past Restorations     

Giovanna Fioretti  Pasquale Acquafredda  Silvia Calò  Mariagrazia Cinelli  Germano Germanò  Alessandro Laera 《文物保护研究》2020,65(3):160-171

ABSTRACT

This present work focuses on the mapping of marbles, decorative patterns and area of the mosaics of the St. Nicola’s Basilica in Bari (Italy) by their photogrammetric survey. The extraordinary importance of these mosaics is due to the stylistic uniqueness and the undisputed workmanship and to the employed materials for tesserae. These mosaics include the white and polychrome marbles, used in the Roman age and reused in medieval artistic production, and imitation stones used as substitutes during the past restorations. The digital survey was realised by the photogrammetric reconstruction of mosaics collecting a photo dataset, after the mosaics redrawing by an image processing software and finally implemented it with lithological identification marbles. It allowed to obtain a punctual mapping of materials, through which to identify original areas and restoration areas, decorative patterns, recurring geometries. The research carried out, supported by the photogrammetric reconstruction as established method for high resolution digital reproduction and mapping, not only ensures the conservation and improvement of the enjoyment of the mosaic floors of the St. Nicola’s Basilica, but allows to conduct studies on materials, decorative patterns and restoration areas directly on the digitized product.  相似文献   

Effects of hyperoxia during recovery from 5×30-s bouts of maximal-intensity exercise     

Sperlich B  Zinner C  Krueger M  Wegrzyk J  Achtzehn S  Holmberg HC 《Journal of sports sciences》2012,30(9):851-858

We test the hypothesis that breathing oxygen-enriched air (F(I)O(2) = 100%) maintains exercise performance and reduces fatigue during intervals of maximal-intensity cycling. Ten well-trained male cyclists (age 25 ± 3 years; peak oxygen uptake 64.8 ± 6.2 ml · kg(-1) · min(-1); mean ± s) were exposed to either hyperoxic or normoxic air during the 6-min intervals between five 30-s sessions of cycling at maximal intensity. The concentrations of lactate and hydrogen ions [H(+)], pH, base excess, oxygen partial pressure, and oxygen saturation in the blood were assessed before and after these sprints. The peak (P = 0.62) and mean power outputs (P = 0.83) with hyperoxic and normoxic air did not differ. The partial pressure of oxygen was 4.2-fold higher after inhaling hyperoxic air, whereas lactate concentration, pH, [H(+)], and base excess (P ≥ 0.17) were not influenced. Perceived exertion towards the end of the 6-min periods after the fourth and fifth sprints (P < 0.05) was lower with hyperoxia than normoxia (P < 0.05). These findings demonstrate that the peak and mean power outputs of athletes performing intervals of maximal-intensity cycling are not improved by inhalation of oxygen-enriched air during recovery.  相似文献   

Emotional education program for adolescents (PREDEMA): evaluation from the perspective of students and effects on socio-affective competences / Programa de educación emocional para adolescentes (PREDEMA): valoración desde la perspectiva de los participantes y sus efectos en las competencias socio-afectivas     

Silvia Postigo-Zegarra  Konstanze Schoeps  Inmaculada Montoya-Castilla 《Infancia y Aprendizaje》2019,42(2):303-336

The literature reveals multiple benefits of emotional education in adolescents’ development. This study examines the effects perceived by participants in the Emotional Education Programme for Adolescents (PREDEMA), which is based on the ability model of emotional intelligence and assumes a dialogical paradigm geared at meaningful learning. A total of 293 students aged 11 to 15 participated in the programme. A mixed methodology was used to evaluate the intervention, analysing participants’ perceived learning and exploring their subjective experience in depth. The results indicate significant learning in all four emotional competences described by the emotional intelligence model, as well as in related areas. The contribution of the qualitative methodology in combination with quantitative analysis is discussed to explore the effects of emotional education programmes that promote adolescents’ emotional awareness.  相似文献   

Understanding parental views of adolescent sexuality and sex education in Ecuador: a qualitative study     

Elena Jerves  Silvia López  Cecilia Castro  William Ortiz  María Palacios  Peter Rober 《Sex education》2014,14(1):14-27

Parents' contribution to sex education is increasingly receiving research attention. This growing interest stems from recognition of the influence that parental attitudes may have both on young people's sexual attitudes and behaviour, and on school-based sex education. Studies regarding parental attitudes towards sexuality are, however, still rare. The two main objectives of this study were to explore parental views about sexuality and to understand parental attitudes towards sex education. Four focus group discussions were conducted with parents from high schools in Cuenca, Ecuador. Data were analysed using thematic analysis. The study revealed that parents held a restricted view about sex education, grounded in traditional religious ideas about sexuality, which led parents to understand it as a morally and physically dangerous activity. Although parents expressed a willingness to make good quality sex education available to their children, they reported having insufficient personal resources to fulfil that objective. The results of this study provide important information about the need to develop and adapt sex education to each specific cultural context, thereby confirming the importance of knowing about the cultural traditions and religious beliefs that may form obstacles to effective sex education for young people in Ecuador.  相似文献   

Item Response Theory analysis and Differential Item Functioning across age,gender and country of a short form of the Advanced Progressive Matrices     

Francesca Chiesi  Matteo Ciancaleoni  Silvia Galli  Kinga Morsanyi  Caterina Primi 《Learning and individual differences》2012,22(3):390-396

Item Response Theory (IRT) models were applied to investigate the psychometric properties of the Arthur and Day's Advanced Progressive Matrices-Short Form (APM-SF; 1994) [Arthur and Day (1994). Development of a short form for the Raven Advanced Progressive Matrices test. Educational and Psychological Measurement, 54, 395–403] in order to test if the scale is a reliable and valid tool to assess general fluid ability in a short time frame. The APM-SF was administered to 2264 high-school and university students. Once attested the one-factor structure of the scale, unidimensional IRT analyses for dichotomous data were applied to investigate the increases in item difficulty levels, Test Information Function, and Differential Item Functioning across age, gender, and country (comparing Italian and British respondents). Additionally, validity measures were reported. Findings attest that the Arthur and Day's APM-SF is a sound instrument for assessing fluid ability within a short time frame.  相似文献