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51.
A recent study illustrated that the educational attainment of Latina/o students has been dismal during the past decade and that many Latinas/os continue to “fall through the cracks” of the educational pipeline. Through storytelling, I juxtapose my educational trajectory as a high school graduate with that of my third-oldest brother, who “fell through the cracks” of the educational pipeline as an underclassman in high school. I provide examples of how being reprimanded for minimal misconduct negatively impacted my older brother’s overall school experiences, which ultimately prevented him from finishing high school despite his potential to succeed.  相似文献   
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The need for this study lies in the assumption that an in-depth examination of the map site of a firm that has a well-developed website can provide patterns about its corporate strategy through all the elements surrounding the organisation, and even a primary source for benchmarking. This technique has made it possible to identify the key issues in the strategic management of the most excellent large Spanish firms and also to describe trends in this sense. The methodology used consisted in a content analysis of the web pages of the Ibex35 companies of the Spanish Stock Market. Rather than focusing on the breakdown of businesses developed by each corporation, it was thought more appropriate to assess their respective corporate principles, as this would allow a better identification of the underlying managerial, organisational and strategic realities of these organisations. As a conclusion we can say that thanks to this technique, it has been possible to identify the key issues in the strategic management of the most excellent large Spanish firms. Additionally, it is shown how this way of working can be generalised to any group of enterprises.  相似文献   
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选择 9只 6 - 10月龄的健康雄性白山羊 ,经粪便检查和DotBLISA检测 ,确认无肝片吸虫感染 ,随机分成感染组 (n =5 )和对照组 (n =4 ) ,试验组每只一次口服接种 15 0个肝片吸虫囊蚴。每周定时从颈静脉采集感染前 0周和感染后 14周血液一次 ,分离血清 ,测定血清中的钾、钙、钠、镁、磷、氯等无机盐的含量 ,旨在研究感染肝片吸虫对山羊机体无机盐含量的影响。结果表明感染后山羊血清中的钾、钠、钙、镁、磷、氯的含量均成波动变化 ,说明肝片吸虫感染后机体无机盐含量发生了不同程度的变化 ,这与虫体感染后机体的代谢发生改变有关。  相似文献   
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For a group of goldfish trained in a runway under conditions of highly massed practice, reduction in magnitude of reward produced a gradual decline in performance to the level of a small-reward control group but no suggestion of negative successive contrast. These results are consistent with the suggestion that reward plays a somewhat different role in the learning of fish and rats. They also serve to extend the range of conditions under which the stimulus aftereffects of reward come to control the instrumental behavior of fish.  相似文献   
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Research Findings: The purpose of this study was to examine within-group individual differences in the code-related and oral language abilities of an economically stressed Spanish-speaking English language learner (ELL) preschool sample and to evaluate the predictive relationship of these differences to later listening comprehension. Latent class analysis was used to identify similarities in both the latent and outcome variables to form classes of students with similar profiles on the measured variables. Our 1st finding confirmed the existence of 4 distinct psychometrically validated profiles: (a) Low English Language, Average Spanish Language, Mixed Spanish Code-Related (prevalence 19.4%); (b) Average English Language, Strengths in Spanish Language and Spanish Code-Related (24.2%); (c) Mixed English and Spanish Language, Low Spanish Code-Related (prevalence 34%); and (d) High English Language, Average Spanish Language, Mixed Spanish Code-Related (prevalence 22%). The resulting profiles demonstrated that English and Spanish code- and language-related domains of emergent literacy developed unevenly across the Spanish-speaking ELL preschoolers. Relative strengths and weaknesses in code- and language-related skills were also found to be meaningfully related to end-of-year listening comprehension—a precursor to reading comprehension. Finally, profiles yielded meaningful variability along sociodemographic variables. Practice or Policy: Implications, limitations, and directions for future research are discussed.  相似文献   
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Case studies were conducted to investigate the conceptions of mathematics and mathematics teaching held by three junior high school teachers. Examination of the relationship between conceptions and practice showed that the teachers' beliefs, views, and preferences about mathematics and its teaching played a significant, albeit subtle, role in shaping their instructional behavior. Differences among the teachers in their conceptions and practices are explained followed by a discussion of properties of their conceptual systems.This paper is based on the author's doctoral dissertation which was directed by Professor Thomas J. Cooney of the University of Georgia and was partly supported by a grant from San Diego State University. I wish to express my appreciation to the teachers who participated in the study and their administrators.  相似文献   
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