Building community bonds,bridges, and linkages to promote the career readiness of high school students in the United States     

Victor M. Hernandez-Gantes  Sasha Keighobadi  Edward C. Fletcher Jr. 《Journal of Education & Work》2018,31(2):190-203

The career readiness of high school students has been a longstanding issue that has received renewed attention in recent years. To document an approach to promoting career readiness in the United States, we conducted an exploratory case study of a distinguished information technology career academy. Using the premises of capital building as a frame of reference, we found a community who viewed career readiness as a form of investment in human capital development. As such, a network of business partners collaborated with academy staff in providing school- and work-based learning opportunities for academy students. This approach was complemented by an emphasis on the development of social capital with social bonds, bridges, and linkages in place to sustain the network identity and development.  相似文献   

Relative Age Effect,Biological Maturation,and Coaches’ Efficacy Expectations in Young Male Soccer Players     

Iván Peña-González  Jaime Fernández-Fernández  Manuel Moya-Ramón  Eduardo Cervelló 《Research quarterly for exercise and sport》2018,89(3):373-379

Purpose: The talent identification and selection process in young male soccer players is mainly focused on anthropometrics and physical performance, but social factors are also considered in this process. The purpose of this study was to test the existence of the relative age effect and its possible influence on anthropometrics and physical performance and to analyze coaches’ efficacy expectations. Method: Data for 564 young male soccer players (M_age = 13.7 ± 1.5 years; M_weight = 53.7 ± 11.6 kg; M_height = 160.2 ± 11.6 cm) included their birth quartile, maturity status, anthropometrics, a physical test battery, and coaches’ efficacy expectations. Results: Early-born players were overrepresented (p < .05). Early-born players were not statistically taller, heavier, or better at physical performance (p > .05) when maturation and chronological age were controlled as confounding factors. However, coaches expected more from early-born players (p < .05), and the inferential analysis showed likely to very likely worthwhile differences between the coaches’ expectations for players born in the first quartile of the year and those born in the fourth quartile of the year. Conclusions: Anthropometrical and physical performance variables were not affected by birth quartile, and coaches’ efficacy expectations were related to the relative age effect.  相似文献   

Aerobic training but no resistance training increases SIRT3 in skeletal muscle of sedentary obese male adolescents     

Katya Vargas-Ortiz  Victoriano Pérez-Vázquez  Arturo Figueroa  Francisco J. Díaz  Paulina G. Montaño-Ascencio 《European Journal of Sport Science》2018,18(2):226-234

In recent years, prevalence of obesity in children and adolescents has increased. A strategy for prevention and management of obesity is aerobic training (AT) due to its effectiveness to decrease fat mass. AT increases the content of SIRT3, a mitochondrial protein that increases the expression of PGC-1α and NFR1, thereby enhances mitochondrial function and metabolic health. Resistance training (RT) provides metabolic benefits but its effect on SIRT3 content is unknown. To compare the effect of AT and RT on SIRT3, PGC-1α and NRF-1 protein levels in skeletal muscle of sedentary obese adolescents. Twenty-seven sedentary obese male adolescents (age: 16.7?±?0.9 years; BMI: 33.7?±?4.3?kg/m²) completed a 1-month control period prior to randomization to one of two supervised exercise protocols: AT (3 days/week, 40 min/day, 70–80% peak heart rate) or RT (3 days/week, 11 exercises, 2 sets/exercise, 12 repetitions/set) for 12 weeks. Biopsies were obtained from the vastus lateralis muscle before and after 12 weeks to analyse SIRT3, PGC-1α and NRF-1 proteins content. Peak oxygen consumption (VO_2peak) and anthropometric variables were evaluated before and after training. AT increased SIRT3 content, which was associated with improvements in PGC-1α content and body fat percentage. RT did not affect SIRT3 or PGC-1α. VO_2peak increased only in AT. The increase in muscle mitochondrial SIRT3 was observed only following AT. In contrast, RT increased muscle mass without improving SIRT3 in obese male adolescents.  相似文献   

Caffeine ingestion changes time-motion and technical-tactical aspects in simulated boxing matches: A randomized double-blind PLA-controlled crossover study     

Victor Silveira Coswig  Paulo Gentil  Francine Irigon  Fabrício Boscolo Del Vecchio 《European Journal of Sport Science》2018,18(7):975-983

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Evidence-based biomedical research in Sub-Saharan Africa: how library and information science professionals contribute to systematic reviews and meta-analyses     

Toluwase Victor Asubiaro  Elueze Isioma 《Journal of the Medical Library Association》2022,110(1):72

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Getting Better Faster: Accelerating Learning and Improvement     

Victor R. Dingus  Russell Justice 《Performance Improvement Quarterly》1993,6(3):28-34

Acquiring process knowledge and skills and transferring technology into and across the organization creates a distinctive competitive advantage. A world-class methodology that accelerates improvement is presented. This methodology is proven effective in manufacturing and service industries, various government agencies and educational institutions. The process of planning and accelerating improvement using an integrated, self-evident set of principles distinguishes between mediocrity and excellence. This approach through systematic application results in more depth and breadth of process learning and facilitates greater acceptance of new thinking and using the latest technology. Our findings through this approach demonstrate that a pathway to continuous improvement can be achieved; thus, unbounded performance levels exist. Since improvement is always a people business, the model also enables each person to attain a greater sense of accomplishment, to acquire skills and knowledge that serve our lives and achieve our goals with a greater sense of confidence and hope.  相似文献   

Cross‐time attitudes,concept formation,and achievement in college freshman physics     

Victor L. Willson  Cheryl Ackerman  Cesar Malave 《科学教学研究杂志》2000,37(10):1112-1120

The relationships among science and engineering attitude, physics conceptual understanding, and physics achievement were explored for a population of college freshman engineering students over two semesters. Gender and SAT‐Quantitative measures were included as exogenous variables in a longitudinal path analysis. Attitude was theorized to predict achievement contemporaneously and at the next time point, while conceptual understanding was theorized to predict physics achievement contemporaneously and at the next time point. Each at one time was theorized to predict scores at the next time. A sample of 200 freshman engineering students participating in an integrated curriculum were assessed in September, December, and April (with a loss of 64 students) with the Force Concepts Inventory (FCI), Mechanics Baseline Test (MBT), and a locally developed attitude measure. The observed model indicated that the FCI predicted attitude at time 1 with no other paths between them, that FCI at time 1 predicted MBT at time 1 and time 2, FCI at time 2 predicted MBT at time 3, and MBT at time 1 predicted FCI at time 2. Gender and SAT‐Quantitative scores were predictive only of FCI and MBT at time 1. Results supported an interactive model of conceptual understanding and achievement, with attitude largely irrelevant to the process for this population. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 1112–1120, 2000  相似文献   

Guest editorial: Global science literacy: An earth system view     

Victor J. Mayer 《科学教学研究杂志》1997,34(2):101-105

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Assessing the effectiveness of the Eureka Program     

Cristina Bayona-Sáez  Teresa García-Marco 《Research Policy》2010,39(10):1375-1386

The aim of this paper is to test whether participation in a European public initiative to support market-oriented R&D, such as the Eureka Program, has a positive impact on the performance of participating firms and, if so, how long it is before the impact becomes apparent. These issues are explored using a dynamic panel data model covering the period 1994–2003, for a sample of 866 European firms, 284 of which completed a Eureka project during the period of analysis. The results show how the completion of a Eureka project has a positive influence over firm performance measured as return over assets (ROA), although the effect does not manifest itself until a year after project completion. Nevertheless, when the sample is divided by sector, it is obtained that, while manufacturing firms follow the general pattern of a positive effect appearing a year after project completion, the effect in non-manufacturing firms is already apparent during the year of completion.  相似文献   

A polymeric micro-optical interface for flow monitoring in biomicrofluidics     

Francesca Sapuppo  Andreu Llobera  Florinda Schembri  Marcos Intaglietta  Victor J. Cadarso    Maide Bucolo 《Biomicrofluidics》2010,4(2)

We describe design and miniaturization of a polymeric optical interface for flow monitoring in biomicrofluidics applications based on polydimethylsiloxane technology, providing optical transparency and compatibility with biological tissues. Design and ray tracing simulation are presented as well as device realization and optical analysis of flow dynamics in microscopic blood vessels. Optics characterization of this polymeric microinterface in dynamic experimental conditions provides a proof of concept for the application of the device to two-phase flow monitoring in both in vitro experiments and in vivo microcirculation investigations. This technology supports the study of in vitro and in vivo microfluidic systems. It yields simultaneous optical measurements, allowing for continuous monitoring of flow. This development, integrating a well-known and widely used optical flow monitoring systems, provides a disposable interface between live mammalian tissues and microfluidic devices making them accessible to detection∕processing technology, in support or replacing standard intravital microscopy.  相似文献