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141.
Andrew H. Wilson 《Research Policy》1974,2(4):364-379
As a country with a relatively small international reputation for manufacturing and, apparently, with an even smaller one for technology-based product and process innovation in manufacturing, Canada has a long way to go to develop its manufacturing and innovative activities to the stage reached by most European countries. Recently, however, a number of science and research policy studies have been made to examine problems associated with innovation in manufacturing. This present paper deals with two important elements associated with these studies, namely, the organization of the public sector in Canada and the roles and responsibilities of the public sector agencies with regard to the encouragement of technology-based innovation in manufacturing. As pointed out in the paper, the federal structure and the agencies within it may at present frustrate as well as encourage innovation. However, assuming that the appropriate policy objectives can be articulated and accepted, the removal of the principal public sector frustrations will be dependent upon better divisions of responsibility and labour between the three levels of government. 相似文献
142.
Previous research has found that children engage in Level 2 visual perspective-taking, that is, the understanding that others may see things in a different way, between 4 and 5 years of age (e.g., J. H. Flavell, B. A. Everett, K. Croft, & E. R. Flavell, 1981). This ability was reexamined in 36-month-olds using color filters. In Experiment 1 (N = 24), children had to recognize how an object looked to an adult when she saw it through a color filter. In Experiment 2 (N = 24), a novel production test was applied. Results of both studies show that 36-month-olds know how an object looks to another person. The discussion focuses on the psychological requirements of visual perspective-taking and its relation to other "theory of mind" abilities, such as the distinction between appearance and reality and understanding false belief. 相似文献
143.
A total of 247 American children between 6 and 10 years of age (126 girls and 121 boys) completed Implicit Association Tests and explicit self-report measures assessing the association of (a) me with male (gender identity), (b) male with math (math-gender stereotype), and (c) me with math (math self-concept). Two findings emerged. First, as early as second grade, the children demonstrated the American cultural stereotype that math is for boys on both implicit and explicit measures. Second, elementary school boys identified with math more strongly than did girls on both implicit and self-report measures. The findings suggest that the math-gender stereotype is acquired early and influences emerging math self-concepts prior to ages at which there are actual differences in math achievement. 相似文献
144.
To examine the development of religious identity during the teenage years, adolescents (N = 477) from Latin American, Asian, and European backgrounds completed questionnaires in the 10th, 11th, and 12th grades (10th grade age: M = 15.81, SD = 0.36). Results indicated that religious identity remained stable across high school whereas religious participation declined. Even after controlling for ethnic differences in religious affiliation, socioeconomic background, and generational status, adolescents from Latin American and Asian backgrounds reported higher levels of religious identity and adolescents from Latin American backgrounds reported higher rates of religious participation. Within individual adolescents, changes in religious identity were associated with changes in ethnic and family identities, suggesting important linkages in the development of these social identities during adolescence. 相似文献
145.
Andrew Brantlinger 《Educational Studies in Mathematics》2011,78(3):395-411
This paper presents findings from a comparative analysis of three similar secondary geometry texts, one critical unit, one
standards-based reform unit, and one specialist chapter. I developed the critical unit as I took the tenets of critical mathematics
(CM) and substantiated them in printed curricular materials in which to teach as part of a larger study. The reform and specialist
texts were both sections from commercially available textbooks. The primary goal of the textual analysis was to examine how
the incorporation of critical or political themes into the required secondary mathematics curriculum transformed this curriculum.
Key findings were that the CM text exchanged political for mathematical content and sent class-based messages about students’
academic potential. I conclude by arguing that the CM agenda proposed by advocates in the USA is problematic in terms of promoting
equity in mathematics education. 相似文献
146.
This paper investigates the relationship between non-parental care and toddlers’ behavioral outcomes using data from Australia. In particular, we explore heterogeneity in the relationship using the unique data on quality attributes: carer/child ratio, share of qualified staff, and expert ratings. The results suggest that full-time non-parental care, particularly center care, is negatively associated with toddlers’ behavioral outcomes. The negative association is however mitigated when centers have a larger number of carers per child. The negative association between non-parental care and behavioral outcomes also appears to be larger for children with better-educated parents. 相似文献
147.
Samiyyah Black Carolina Estrada Mirza Carolina de la Fuente Ashley Orozco Andrew Trabazo Sofia de la Vega 《Journalism Practice》2019,13(1):35-51
This article examines talks given by 12 female media professionals at a Southern US university’s center on women in communication between 2013 and 2015 to identify the influence of hegemonic masculinity in industry speak about women and professionalism in the fields of journalism, advertising, and public relations. This paper applies a feminist critique of discussions about “work–life balance,” “leaning in,” “emotion,” and language about the role of technology and innovation in women’s careers, to argue that inherent in these discussions about media professionalism are traits that perpetuate binary notions of feminine–masculine traits of the workplace. As a whole, these messages fail to account for notions of intersectionality and perpetuate inequality and masculine power for future professionals. 相似文献
148.
Commonly used technical anatomy and physiology (A&P) terms are predominantly rooted in Latin and Greek vocabulary, so it is commonly inferred that a solid grounding in Latin and Greek roots of medical terminology will improve student learning in anatomy and related disciplines. This study examines the association of etymological knowledge of A&P terms and A&P course performance among 446 undergraduates in their first semester of the study of human gross anatomy and physiology, with a more detailed analysis of the characteristics of 52 students who filled out surveys about their prior knowledge and experiences related to medicine or anatomy. In both data sets, there was only a weak positive correlation between the performance on a quiz of Latin and Greek medical terms and the students' performance on regular assignments. The presumption that familiarity with Latin and Greek word roots has a strong influence on successful learning of anatomy is not supported by these data. Future research should address whether or not there are particular skills associated with using etymological knowledge in improving A&P course performance. 相似文献
149.
Chao Ai Wei Gao Lijuan Chen Jiawei Guo Xiangdong Kong Andrew Plummer 《Journal of The Franklin Institute》2021,358(1):296-320
The requirement for An electrical grid-connected wind turbine is that the synchronous generator speed is stable within a required speed range for the electrical grid. In this paper, a hydraulic wind turbine (HWT) system is considered, and the working principle and working conditions of the HWT are introduced. A novel speed control method is proposed in this paper, using both a proportional flow control valve and a variable displacement motor, which are adjusted in combination to control the speed of the HWT. By establishing a state space model of the HWT and solving the nonlinear system with a feedback linearization method, a bivariate tracking controller is constructed to realize accurate speed control under fluctuating wind speed and the load disturbance conditions. The effectiveness of the control method is verified by simulation, but experimental results highlight problems with the method. The theoretical controller is simplified to reduce sensitivity to measurement noise and modeling error. The control effect has been improved to some extent, but it is limited. Based on these results, combined with the sliding mode variable structure control method and the feedback linearization method to solve the problem of measurement noise and modeling error, and the effectiveness of the control law is finally verified experimentally. It lays a theoretical foundation for the practical application of HWT. 相似文献
150.