The digital classroom: harnessing technology for the future     

Cristina Mendes da Costa 《Interactive Learning Environments》2013,21(2):197-200

  相似文献   

Looking Far And Looking Near: Student Insights On History,Language, And Power     

Gail August  Sabrina Adaba  Cristina Mulas Lopez  Crismell Veras 《Community College Journal of Research & Practice》2013,37(12):930-933

ABSTRACT

Three community college students participated in a collaborative student/professor research project to experiment with new ideas in teaching. Under the direction of the instructor, the students studied the South African riots in Soweto, 1976, and how issues of language and power were connected to this event. This investigative process began with video information to introduce students to the key issues, and was then followed by student research and discussion. The students, who were particularly motivated to understand the conflict by relating it to their own linguistic circumstances, worked individually and together to find articles and video sources to support their personal interests and ideas. By reflecting on their experiences and perceptions about language and communication, students were able to become engaged in an unfamiliar historical topic, discover relevant academic information, evaluate sources, and formulate insightful responses.  相似文献   

A Structural Equation Model at the Individual and Group Level for Assessing Faking-Related Change     

Pere Joan Ferrando  Cristina Anguiano-Carrasco 《Structural equation modeling》2013,20(1):91-109

This article proposes a comprehensive approach based on structural equation modeling for assessing the amount of trait-level change derived from faking-motivating situations. The model is intended for a mixed 2-wave 2-group design, and assesses change at both the group and the individual level. Theoretically the model adopts an integrative approach that relates the 2 main current conceptualizations of faking, and models the amount of trait change as an individual-differences variable. The model and procedures are used in an empirical study based on 512 participants. Some of the results are interesting and warrant further research. Overall, the methodology that is proposed provides new resources for the theoretical and applied assessment of faking. In particular, it provides the practitioner with new tools for clearly assessing faking at the individual level.  相似文献   

Combining IRT and SEM: A Hybrid Model for Fitting Responses and Response Certainties     

Pere J. Ferrando  Cristina Anguiano-Carrasco  Josep Demestre 《Structural equation modeling》2013,20(2):208-225

This article proposes a model-based procedure, intended for personality measures, for exploiting the auxiliary information provided by the certainty with which individuals answer every item (response certainty). This information is used to (a) obtain more accurate estimates of individual trait levels, and (b) provide a more detailed assessment of the consistency with which the individual responds to the test. The basis model consists of 2 submodels: an item response theory submodel for the responses, and a linear-in-the-coefficients submodel that describes the response certainties. The latter is based on the distance-difficulty hypothesis, and is parameterized as a factor-analytic model. Procedures for (a) estimating the structural parameters, (b) assessing model–data fit, (c) estimating the individual parameters, and (d) assessing individual fit are discussed. The proposal was used in an empirical study. Model–data fit was acceptable and estimates were meaningful. Furthermore, the precision of the individual trait estimates and the assessment of the individual consistency improved noticeably.  相似文献   

Municipal elections and cultural expenditure     

Bernardino Benito  Francisco Bastida  Cristina Vicente 《Journal of Cultural Economics》2013,37(1):3-32

The aim of this paper is to analyze the effect of electoral timing on municipal public cultural spending. We use a panel sample of all municipalities from the Spanish Region of Murcia for 1995–2008. Our results reveal that mayors adopt an opportunistic behavior, increasing cultural spending in the election year and reducing it in the second year after the election. We also investigate whether the electoral cycle in cultural spending is influenced by mayors’ ideology, political strength, willingness to run for re-election, and electoral competitiveness. In this regard, our study shows that when mayors expect close elections, political budget cycles’ size is greater. Concerning political leadership, the magnitude of the electoral cycle is influenced by mayors’ political ideology rather than mayors’ political strength and re-election willingness. Additionally, we seek to shed some light on the determinants of public cultural spending. We find that income and upper-level governments’ transfers have a positive impact on cultural spending. Finally, unemployment, young people’s proportion and elderly people’s proportion negatively influence cultural spending.  相似文献   

Granite desalination using electromigration. Influence of type of granite and saline contaminant     

Jorge Feijoo  Xosé Ramón Nóvoa  Teresa Rivas  María Jesús Mosquera  Javier Taboada  Cristina Montojo  Fernando Carrera 《Journal of Cultural Heritage》2013,14(5):365-376

We describe the results of electromigration desalination of two soluble salt-contaminated Galician granites. The efficacy of electromigration, which had not been previously applied to granite, was assessed for two types of granite contaminated with a 20% NaCl solution and seawater. Desalination effectiveness was evaluated as follows: (1) analysis of anode and cathode ion content during testing; (2) analysis of ions at different distances from the electrodes after testing; (3) pH assessment of the stone surfaces; and (4) evaluation of colour changes. Results were very satisfactory; by the end of testing, chloride was reduced by almost 100% in both the NaCl and seawater contaminated samples. Sulfate reduction was also significant, despite this ion's lower mobility. The granite pH values remained close to neutral and colour changes were minimal. The difference in effectiveness of the process for the two types of stone was associated with their dissimilar pore structure.  相似文献   

Cardiorespiratory and perceptual responses of two interval training and a continuous training protocol in healthy young men     

João Pedro Araújo Naves  Ana Cristina Silva Rebelo  Lucas Raphael Bento E Silva  Maria Sebastiana Silva  Rodrigo Ramirez-Campillo  Robinson Ramírez-Vélez 《European Journal of Sport Science》2019,19(5):653-660

High Intensity Interval Training (HIIT) can be performed with different effort to rest time-configurations, and this can largely influence training responses. The purpose of the study was to compare the acute physiological responses of two HIIT and one moderate intensity continuous training (MICT) protocol in young men. A randomised cross-over study with 10 men [age, 28.3?±?5.5years; weight, 77.3?±?9.3?kg; height, 1.8?±?0.1?m; peak oxygen consumption (VO₂peak), 44?±?11?mL.kg^?1.min^?1]. Participants performed a cardiorespiratory test on a treadmill to assess VO₂peak, velocity associated with VO₂peak (vVO₂peak), peak heart rate (HRpeak) and perceived exertion (RPE). Then participants performed three protocols equated by distance: Short HIIT (29 bouts of 30s at vVO₂peak, interspersed by 30s of passive recovery, 29?min in total), Long HIIT (3 bouts of 4?min at 90% of vVO₂peak, interspersed by 3?min of recovery at 60% of vVO₂peak, 21?min in total) and MICT (21?min at 70% of vVO₂peak). The protocols were performed in a randomised order with ≥48 h between them. VO₂, HRpeak and RPE were compared. VO₂peak in Long HIIT was significantly higher than Short HIIT and MICT (43?±?11 vs 32?±?8 and 37?±?8?mL.kg^?1.min^?1, respectively, P?P?P?2, HR and RPE than Short HIIT and MICT, suggesting a higher demand on the cardiorespiratory system. Short HIIT and MICT presented similar physiologic and perceptual responses, despite Short HIIT being performed at higher velocities.  相似文献   

No effect of HMB or α-HICA supplementation on training-induced changes in body composition     

Filipe J. Teixeira  Catarina N. Matias  Cristina P. Monteiro  Maria J. Valamatos  Joana F. Reis  Ana Batista 《European Journal of Sport Science》2019,19(6):802-810

β-hydroxy-β-methylbutyrate (calcium: HMB-Ca and free acid: HMB-FA) and α-hydroxyisocaproic acid (α-HICA) are leucine metabolites that have been proposed to improve body composition and strength when combined with resistance exercise training (RET). In this double-blind randomized controlled pragmatic trial, we evaluated the effects of off-the-shelf supplements: α-HICA, HMB-FA and HMB-Ca, on RET-induced changes in body composition and performance. Forty men were blocked randomized to receive α-HICA (n?=?10, fat-free mass [FFM]?=?62.0?±?7.1?kg), HMB-FA (n?=?11, FFM?=?62.7?±?10.5?kg), HMB-Ca (n?=?9, FFM?=?65.6?±?10.1?kg) or placebo (PLA; n?=?10, FFM?=?64.2?±?5.7?kg). The training protocol consisted of a whole-body resistance training routine, thrice weekly for 8 weeks. Body composition was assessed by dual-energy x-ray absorptiometry (DXA) and total body water (TBW) by whole-body bioimpedance spectroscopy (BIS), both at baseline and at the end of weeks 4 and 8. Time-dependent changes were observed for increase in trunk FFM (p?相似文献   

Performance strategies of US Olympians in practice and competition     

Marcus K. Taylor  Daniel Gould  Cristina Rolo 《High Ability Studies》2008,19(1):19-36

Until recently, no self‐report instruments have examined psychological skills use in both practice and competition. In light of the significant role of practice in sport performance outcomes, a need exists to measure these skills in both domains. This study was designed to investigate differences in performance strategies of US Olympians in both practice and competition. The Test of Performance Strategies was administered to 176 US participants in the 2000 Sydney Olympic Summer Games. Discriminant function analyses demonstrated significant differences between medalists and nonmedalists in both the competition and practice performance strategies. Furthermore, significant gender and age differences were identified for competition strategies only. The 16 subscales of the TOPS, with two exceptions, create an internally stable instrument with moderate predictive ability relative to quality of sport performance, gender, and age in this elite sample of athletes.  相似文献   

“Tell me about”: a logbook of teachers’ changes from face-to-face to distance mathematics education     

Albano  Giovanna  Antonini  Samuele  Coppola  Cristina  Dello Iacono  Umberto  Pierri  Anna 《Educational Studies in Mathematics》2021,108(1-2):15-34

Educational Studies in Mathematics - In 2020, the emergency due to the COVID-19 pandemic brought a drastic and sudden change in teaching practices, from the physical space of the classrooms to the...  相似文献