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81.
Stephen W. Kalule Duncan Ongeng Gabriel Karubanga 《The Journal of Agricultural Education and Extension》2019,25(3):211-225
Purpose: This study elucidates on how faculty supervision support to students during farm placements and other facilitating conditions influence farmer learning in the student-centred university outreach.Methodology/Design/Approach: Cross-sectional data were collected from a sample of 283 farmers who had previously hosted students of Gulu University in the student-to-farmer university outreach. Structural equation modelling was used to analyse how faculty supervision support to students in combination with other facilitating conditions affect the formation of intentions for learning and actual farmer learning behaviour.Findings: Faculty supervision support in the student-to-farmer outreach was found to significantly influence formation of intentions for learning (β?=?0.380; t?=?5.263; P?.01) and actual farmer learning behaviour (β?=?0.182; t?=?2.081; P?.05).Practical implications: Faculty supervision support to students is critical to fostering lasting learning relationships in university outreach. Thus, it needs to be a part of the transformation agenda of the higher education sector for improved community linkages and innovation.Theoretical implications: Empirical data obtained from the context of student-centred university outreach is used to extend the model of facilitating conditions.Originality/Value: The study addresses how faculty supervision support together with farmers’ perception of student attitudes and the value of the learning content influence farmers’ learning behaviour during university outreach. 相似文献
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84.
Preventing teen Pregnancy and Academic Failure: Experimental Evaluation of a Developmentally Based Approach 总被引:4,自引:0,他引:4
Joseph P. Allen Susan Philliber Scott Herrling Gabriel P. Kuperminc 《Child development》1997,68(4):729-742
A true experimental evaluation was conducted of a national volunteer service program, Teen Outreach, that was designed to prevent adolescent problem behaviors by enhancing normative processes of social development in high school students. This evaluation addressed 2 problem behaviors in adolescence—teenage pregnancy and school failure—for which experimental evidence about successful preventive programs has been largely lacking. High school students (N=695) in 25 sites nationwide were randomly assigned to either a Teen Outreach or Control group and were assessed at both program entry and at program exit 9 months later. Rates of pregnancy, school failure, and academic suspension at exit were substantially lower in the Teen Outreach group, even after accounting for student sociodemographic characteristics and entry differences between groups. Results are interpreted as suggesting the potential value both of the Teen Outreach Program specifically and also more generally of interventions that seek to prevent problem behaviors by addressing broad developmental tasks of adolescence rather than by focusing upon individual problem behaviors or micro skills. 相似文献
85.
In three experiments, rats were given concurrent exposure to a compound flavor (AX) and to one of the elements of the compound
(X). The perceptual effectiveness of A was then assessed by a test involving generalization of a conditioned aversion. Comparison
was made with a preexposure procedure in which the compound and the common element were presented on separate trials, either
in alternation or in separate blocks of trials. The effectiveness of the unique cue was less after blocked preexposure than
after either of the other procedures; concurrent preexposure did not produce a greater effect than did alternating preexposure.
These results challenge the suggestion that concurrent preexposure engages a special comparison process that will facilitate
this form of perceptual learning. 相似文献
86.
Gabriel Pablo Axarlian 《Journal of Media Economics》2017,30(3):121-142
Home entertainment markets have seen dramatic declines in revenues over the last 10 years due to the digital revolution, making new adaptation strategies of crucial importance to maintaining existing profitability. Recently, the film industry has worked with related firms to develop a standardized ecosystem for the sale and access to digital versions of their films. This system, known as UltraViolet, embodies infinite durability; the perpetual access to a purchased film across computing platforms and time. The author makes use of exogenous variation in the implementation of this system to study the effect the introduction of this new feature has had on the decision to buy or rent. His findings show that the inclusion of infinite durability creates enough value to spur increased purchasing behavior. Also, the inclusion of infinite durability creates a high degree of substitutability amongst products that include it in purchase markets. Lastly, the author found evidence that the lack of inclusion of infinite durability will spur consumers to rent rather than buy. 相似文献
87.
Laura Garcia-Cervantes Gabriel Rodríguez-Romo Irene Esteban-Cornejo Verónica Cabanas-Sanchez Álvaro Delgado-Alfonso José Castro-Piñero 《Journal of sports sciences》2016,34(15):1423-1429
The aims of the present study were to assess the association of environmental perception with objective and self-reported physical activity (PA) and the relation between environmental perception and meeting PA recommendations on children and adolescents. A sample of 1520 youth (770 boys) aged 8–18 years (12.1 ± 2.5 years) from the UP&;DOWN study were included in the data analyses. Environmental perception was assessed with the short adapted version of the ALPHA environmental questionnaire. PA was objectively (accelerometers) and self-reported measured (PA Questionnaire for Children, Patient-centered Assessment and Counseling for Exercise Questionnaire and Finnish PA Index). Linear regression models were used to assess the association of environmental perception with PA. Bivariate logistic regression models were used to assess differences between environmental perception and meeting PA recommendations. Environmental perception was positively associated with both objective and self-reported PA. Some differences were found in the association of environmental perception and PA between sex- and age-specific groups. Youth who perceived a more favourable environment were more likely to meet PA recommendations (at least 60 min · day?1 of moderate to vigorous PA (MVPA)). Results suggest that environmental perceptions of children and adolescents may play an important role in achieving higher levels of PA. 相似文献
88.
Gabriel J. Pruna William P. McCormack Adam R. Jajtner Jeremy R. Townsend Jonathan D. Bohner 《European Journal of Sport Science》2016,16(1):72-79
The purpose of this study was to examine the effect of the L-Alanyl-L-Glutamine dipeptide (AG) on cognitive function and reaction time (RT) following endurance exercise. Twelve male endurance athletes (23.5 ± 3.7 y; 175.5 ± 5.4 cm; 70.7 ± 7.6 kg) performed four trials, each consisting of running on a treadmill at 70% of VO2max for 1h, then at 90% of VO2max until exhaustion. One trial consisted of no hydration (DHY), another required ingestion of only a sports electrolyte drink (ED) and two trials required ingestion of a low dose (LD; 300 mg·500 ml?1) and high dose (HD) of AG (1 g·500ml?1) added to the ED. Cognitive function and reaction tests were administered pre- and post-exercise. Magnitude based inferences were used to analyze ? cognitive function and ? reaction test data. Results indicated that DHY had a possible negative effect on number of hits in a 60-sec reaction test compared to LD and HD, while ED appeared to have a negative effect compared to HD. Analysis of lower body quickness indicated that LD and HD were likely improved in comparison to DHY. Performance on the serial subtraction test appeared to be possibly better in ED than DHY, while other comparisons between groups regarding cognitive function were unclear. In conclusion, rehydrating with AG during submaximal exercise may maintain or enhance subsequent RT in upper and lower body activities compared to DHY. These same effects were not apparent when participants consumed ED. 相似文献
89.
AbstractHigh school underrepresented minority students in the US are at an increased risk of dropping out of the STEM pipeline. Based on expectancy-value theory, we examined if Latino students’ perception of support from parents, siblings/cousins, teachers, and friends in 10th grade predicted their science ability self-concepts and values, which in turn predicted their classroom engagement. Survey data were collected from 104 Latino high school students and their science teachers. The findings suggest that adolescents’ perceptions of overall support and home-based support predicted adolescents’ science ability self-concepts at 10th grade while controlling for their 9th grade self-concepts. Although adolescents reported high support from teachers, teacher or school-based support alone was not a strong correlate of their motivational beliefs. Perceived support was indirectly related to classroom engagement through adolescents’ ability self-concepts. Feeling supported across home and school may be necessary to sustain adolescents’ science motivational beliefs and, in turn, their science classroom engagement. 相似文献
90.
Gabriel Hervas José Luis Medina María Paz Sandín 《Journal of Research on Technology in Education》2020,52(4):461-473
AbstractLesson study (LS) is a process through which teachers design, teach and discuss a lesson collaborating with colleagues. Sometimes, it includes video recording the lesson so teachers can use videos to later discuss the lesson and its improvement, however, there is little research addressing the consequences of doing it. This article investigates participants’ perceptions and use of video within LS. Results show that participants perceived video in LS as viable and with potential to stimulate reflection and to improve lessons, but also evince that video affects the outcomes, management and sustainability of LS. We analyze and discuss its potential and the challenges it poses, suggesting ideas for its implementation. 相似文献