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Given the significant negative impacts of peer victimization on youth development, studies have sought to understand what buffers against these consequences. To that end, the present study examined whether teacher attachment and perceptions of school safety moderated the associations between different forms of victimization and school absences over the course of an academic year among a sample of 272 high school students. Findings indicated that teacher attachment moderated the associations between relational and cyber victimization and absences, while perceived school safety moderated associations between relational victimization and absences. However, findings pertaining to cyber victimization were not as anticipated. Implications for prevention and intervention efforts in high schools are discussed. 相似文献
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Phagocytosis and exocytosis are two cellular processes involving membrane dynamics. While it is easy to understand the purpose of these processes, it can be extremely difficult for students to comprehend the actual mechanisms. As membrane dynamics play a significant role in many cellular processes ranging from cell signaling to cell division to organelle renewal and maintenance, we felt that we needed to do a better job of teaching these types of processes. Thus, we developed a classroom-based protocol to simultaneously study phagocytosis and exocytosis in Tetrahymena pyriformis. In this paper, we present our results demonstrating that our undergraduate classroom experiment delivers results comparable with those acquired in a professional research laboratory. In addition, students performing the experiment do learn the mechanisms of phagocytosis and exocytosis. Finally, we demonstrate a mathematical exercise to help the students apply their data to the cell. Ultimately, this assay sets the stage for future inquiry-based experiments, in which the students develop their own experimental questions and delve deeper into the mechanisms of phagocytosis and exocytosis. 相似文献
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AbstractThis column examines the potential applications of the ACRL Information Literacy Framework within special libraries. The authors address the current literature related to the ACRL Framework in special libraries and present two case studies detailing its usage in instruction and outreach initiatives. The first case study relates to an instruction session for interns at Mt. Cuba Center. The second case study relates to teaching users to edit Wikipedia at the New York Botanical Garden. Suggestions for how to integrate the ACRL Framework into future projects as well as suggestions for how information literacy can take on a greater role within the special libraries field are included in the conclusion. 相似文献
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广枣提取液对小鼠免疫功能和运动耐力的影响 总被引：11，自引：0，他引：11
观察了广枣提取液对小鼠免疫功能、运动耐力的影响。结果表明：广枣提取液可明显增加小鼠耐缺氧时间，延长小鼠负重游泳时间，降低运动后小鼠血乳酸水平，显著提高其心肌组织中SOD活力；同时明显增加小鼠脾脏／体重、胸腺／体重比值，增强小鼠对巨噬细胞的吞噬能力．提高小鼠的细胞免疫、体液免疫功能。提示广枣提取液具有显著促进小鼠免疫功能及显著提高小鼠运动耐力的功效。 相似文献
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Anne Williford Paula J. Fite Debbie Isen Jonathan Poquiz 《Psychology in the schools》2019,56(8):1301-1317
The purpose of the present study is to examine whether physical and relational victimization negatively impacts indicators of school climate–students’ perceptions of school safety, their attachment to school, and their help‐seeking behavior–and whether gender moderates these associations. Using a sample of 361 third through fifth‐grade students recruited from six public elementary schools, results reveal that relational and physical victimization were both uniquely associated with lower levels of school safety and school attachment, with stronger associations between school attachment and relational victimization. However, only physical victimization was negatively associated with help‐seeking, suggesting that physical victimization is more influential on help seeking as compared with relational victimization. Gender moderated the relationships between victimization and school attachment and help‐seeking with differences by form noted. No gender differences were evident in associations between the forms of peer victimization and school safety. Implications for prevention and intervention in schools are discussed. 相似文献
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Fueled by a belief that early intervention can prevent a host of educational woes, efforts to provide universal, publicly
funded preschool have the potential to radically change the way we think about our commitments and responsibilities in education.
We call for the implementation of innovative, universal preschool programs that attend to developmental characteristics of
learners, cultural and linguistic diversity, ecosystemic context, and the new mandates on teacher training. Universal preschool
has the potential to go far beyond mere “day-care,” as it has the potential to establish the foundation for a lifelong love
of learning and optimal social/emotional development. We also advocate for high-quality teacher training to populate preschools
with high-quality teachers. If universal preschool is carefully planned and provided, K-12 education stands to benefit substantially. 相似文献
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