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51.
Charter schools that target underserved communities, including Latinxs, have proliferated in the U.S., claiming a unique, more autonomous and successful alternative to traditional public schools, often with a promise of increased postsecondary access and preparation. However, there is conflicting evidence regarding their effectiveness on academic outcomes, prompting additional research on charter schools. This study examined the college access and preparation experiences of 14 Latinxs attending college preparatory charter schools within one school system in Texas. Findings highlight how schools assisted students in preparing for college, but challenges in accessing college knowledge and assistance still existed, particularly for undocumented students. 相似文献
52.
Barbara K. McKenzie James E. Witte Anthony J. Guarino Maria Martinez Witte 《Innovative Higher Education》2002,27(1):65-73
Two hundred students majoring in education responded to the Validation of Effective Behaviors of Distance Instructors Inventory (McKenzie, Kirby, & Mims, 1997). The 41 items measured two dimensions: frequency and importance of effective behaviors in delivering distance instruction. A two-way within-subjects ANOVA was conducted. Of the 41 items, 14 were rated higher in importance than in frequency. The 14 items were then analyzed using Principal Component Analysis with Varimax rotation, which yielded two factors: Effective Learning Methods and Student Guidance. This study suggests that the behaviors of Interactive Television (ITV) instructors may be lacking in these two important factors. 相似文献
53.
Cañĩzares-Esguerra J 《Isis; an international review devoted to the history of science and its cultural influences》2005,96(1):64-70
The Portuguese and Spanish empires were both global and long lasting. This essay focuses on colonial Spanish America, particularly on the practices of natural history. It also suggests that chivalric-epic ideologies permeated early modem epistemologies, including those of the French and the British. The essay criticizes the application of nineteenth-century models of empire to the understanding of the early modern composite monarchies in the New World. Finally, it explores the ways metropolitan natural philosophy was transformed in the New World kingdoms to bolster patriotic identities. 相似文献
54.
Kay Martinez 《Asia-Pacific Journal of Teacher Education》1998,26(2):97-106
The paper argues for fresh recognition of the complexities faced by preservice teachers, particularly during the practicum, where they are expected to bring their stockpile of diverse, and sometimes conflicting, knowledges about effective teaching to immediate use with classroom learners. The paper abo draws on insights from postmodern theorising on the privileging of knowledges. While the major focus of the paper is on issues surrounding multiplicity of knowledges about effective classroom teaching, it is also recognised that much of learning to teach occurs in affective, ethical and interpersonal ways as well as cognitive. Several suggestions are made to assist preservice teachers negotiate the complexities of the process of becoming teachers. It is argued that the practicum in preservice teacher education can be seen as a rich site for further exploration of this process—and should be resourced commensurately. Such explorations have the potential to illuminate the ways in which preservice teachers mesh knowledges about effective teaching with their own personal values and beliefs within the specific contexts of their classrooms. Associated with the recognition of the complexities of the processes involved, is a call for university and school based teacher educators to model, with respect to their programmes and practices, the same level of critical reflection they advocate for student teachers. 相似文献
55.
56.
郭俊克 《天津大学学报(英文版)》2009,15(2):79-94
Bridge pressure flow scour at clear water threshold condition is studied theoretically and experimentally. The flume experiments reveal that the measured scour profiles under a bridge are more or less 2-dimensional; all the measured scour profiles can be described by two similarity equations, where the horizontal distance is scaled by the deck width while the local scour by the maximum scour depth; the maximum scour position is located just under the bridge about 15% deck width from the downstream deck edge; the scour begins at about one deck width upstream the bridge while the deposition occurs at about 2.5 deck widths downstream the bridge; and the maximum scour depth decreases with increas-ing sediment size, but increases with deck inundation. The theoretical analysis shows that: bridge scour can be divided into three cases, i.e. downstream unsubmerged, partially submerged, and totally submerged. For downstream unsubmerged flows, the maximum bridge scour depth is an open-channel problem where the conventional methods in terms of critical velocity or bed shear stress can be applied; for partially and totally submerged flows, the equilibrium maximum scour depth can be described by a scour and an inundation similarity number, which has been confirmed by experiments with two decks and two sediment sizes. For application, a design and field evaluation procedure with examples is presented, including the maximum scour depth and scour profile. 相似文献
57.
Alejandro J. Gallard Martinez 《Cultural Studies of Science Education》2009,4(3):733-738
Teaching is a very complex endeavor. Embedded within this complex environment are issues of power, culture, ethnicity, and race. When teachers and students come together, in the classroom, some of these issues become visible and others remain invisible. Attempting to make influences on teaching and learning visible is one of the steps toward developing a practice framed by conscientização. Ms. Cook, the teacher of this story, is empowering herself and her students; through critical reflection that serves to deneutralize educational acts by recognizing they are embedded in issues of culture, ethnicity, politics, power, and, race. Classroom based research must be more inclusive and indeed cognizant of the mediating macrostructures that teachers deal with everyday. For example, Goldberg and Muir Welsh describe some of the students as being Latinos. In doing so, they adopts a third person as opposed to a first person view of these students. A first person view can acknowledge a dialectical relationship between race and ethnicity. 相似文献
58.
Juan J. Pulido David Sánchez-Oliva Francisco M. Leo Jorge Sánchez-Cano Tomás García-Calvo 《Measurement in physical education and exercise science》2018,22(1):25-37
Purpose: The objectives were to develop and validate the Coaches’ Interpersonal Style Questionnaire. The Coaches’ Interpersonal Style Questionnaire analyzes the interpersonal style adopted by coaches when implementing their strategy of supporting or thwarting athletes’ basic psychological needs. Method: In Study 1, an exploratory factor analysis was performed with 265 Spanish male athletes, between 11- and 17-years-old, to confirm the internal structure of the questionnaire. Study 2 was conducted with 430 athletes, also between 11- and 17-years-old. Both confirmatory factor analysis and exploratory structural equation modeling were used to test a set of alternative models to find the best measurement model. Results: The hierarchical exploratory structural equation modeling model showed the best fit to the data and acceptable standardized factor loadings. Concurrent validity was revealed through correlational analysis of the basic psychological need satisfaction and frustration. Conclusion: This study provides a multi-dimensional questionnaire to assess coaches’ interpersonal style perceived by athletes. 相似文献
59.
Associations Between Sexting Behaviors and Sexual Behaviors Among Mobile Phone‐Owning Teens in Los Angeles 下载免费PDF全文
Eric Rice Jaih Craddock Mary Hemler Joshua Rusow Aaron Plant Jorge Montoya Timothy Kordic 《Child development》2018,89(1):110-117
The implications of teen sexting for healthy development continue to concern parents, academics, and the general public. Using a probability sample of high school students (N = 1,208) aged 12–18, the prevalence of sexting, associations with sexting, and associations between sexing and sexual activity were assessed. Seventeen percent both sent and received sexts, and 24% only received sexts. Sending and receiving sexts were positively associated with each other and both behaviors were associated with having peers who sext. Lifetime reports of sexual intercourse, anal sex, oral sex, and recent unprotected sex were positively associated with reports of texting 300 or more times per day, only receiving sexts, and both sending and receiving sexts. 相似文献
60.
Associations Among Infant Iron Deficiency,Childhood Emotion and Attention Regulation,and Adolescent Problem Behaviors 下载免费PDF全文
Patricia East Erin Delker Betsy Lozoff Jorge Delva Marcela Castillo Sheila Gahagan 《Child development》2018,89(2):593-608
This study examined whether iron deficiency (ID) in infancy contributes to problem behaviors in adolescence through its influence on poor regulatory abilities in childhood. Chilean infants (N = 1,116) were studied when there was no national program for iron fortification (1991–1996), resulting in high rates of ID (28%) and iron‐deficiency anemia (IDA, 17%). Infants (54% male) were studied at childhood (Mage = 10 years) and adolescence (Mage = 14 years). IDA in infancy was related to excessive alcohol use and risky sexual behavior in adolescence through its effect on poor emotion regulation in childhood. Attentional control deficits at age 10 were also related to both infant IDA and heightened risk taking in adolescence. Findings elucidate how poor childhood regulatory abilities associated with infant IDA compromise adjustment in adolescence. 相似文献