Code-switching 101: Black women counselor educators’ personal and professional identity development     

Loni Crumb  Angie D. Cartwright  Dominique S. Hammonds  Janeé Avent Harris 《Counselor Education & Supervision》2023,62(3):233-247

The perceptions of personal and professional identity development from four Black women counselor educators were examined through a collaborative autoethnography methodology. Themes identified include (a) intentionality of code-switching, (b) inextricable identities, (c) fight for and with authenticity, and (d) mutual development of personal and professional identities.  相似文献   

“Things your history teacher won't teach you: Science edition”: Black women science teachers as anti-racist teachers     

Alexis D. Riley  Felicia Moore Mensah 《科学教学研究杂志》2024,61(4):809-840

Marginalized communities cannot and do not have decontextualized experiences with how socioscientific issues, such as exposure to COVID-19 as frontline essential workers, high Black infant mortality rates, air pollution leading to respiratory problems, and other issues, affect their communities. As PreK-12 science teachers and teacher educators strive to dismantle oppressive practices in their classrooms and curriculum, it would be helpful to learn from Black women science teachers who have been engaging in anti-racist practices before the racial awakenings of Summer 2020. In this study, three different virtual focus groups, or Sista Circles, were conducted with 18 Black women secondary science teachers. Ranging from 1 to 22 years of experience, Black women teachers across the country and international participants in Canada and Qatar participated in the Sista Circles. From intersectional qualitative analysis and narrative inquiry, the findings of the study reveal that Black women science teachers enact anti-racist science teaching by bringing something new to the community; using NGSS standards within the context of the community; teaching at the intersection of history, culture, and science learning and teaching; and building critical consciousness in the science classroom. Furthermore, the findings of the study have implications for the use of anti-racist frameworks within the context of science education that were authentically the practices of the Black women in the study. This study offers insights into how the critical consciousness of Black women teachers can be represented in the science classroom even in times of nonsupport from peers and administration. The power and necessity of Black women teachers are paramount in science classrooms specifically because of the neutral, apolitical ways science teaching has been approached in the past. The narratives and stories shared here exemplify how Black women science teachers transform science teaching and learning by displaying various acts of Criticality.  相似文献   

Isolation,resilience, and faith: Experiences of Black Christian students in biology graduate programs     

Angela N. Google  Chloe D. Bowen  Sara E. Brownell  M. Elizabeth Barnes 《科学教学研究杂志》2024,61(3):591-624

To increase participation of students of color in science graduate programs, research has focused on illuminating student experiences to inform ways to improve them. In biology, Black students are vastly underrepresented, and while religion has been shown to be a particularly important form of cultural wealth for Black students, Christianity is stigmatized in biology. Very few studies have explored the intersection of race/ethnicity and Christianity for Black students in biology where there is high documented tension between religion and science. Since graduate school is important for socialization and Black students are likely to experience stigmatization of their racial and religious identity, it is important to understand their experiences and how we might be able to improve them. Thus, we interviewed 13 Black Christian students enrolled in biology graduate programs and explored their experiences using the theoretical lens of stigmatized identities. Through thematic content analysis, we revealed that students negotiated experiences of cultural isolation, devaluation of intelligence, and acts of bias like other racially minoritized students in science. However, by examining these experiences at the intersection of race/ethnicity and religion, we shed light on interactions students have had with faculty and peers within the biology community that cultivated perceptions of mistrust, conflict, and stigma. Our study also revealed ways in which students' religious/spiritual capital has positively supported their navigation through biology graduate school. These results contribute to a deeper understanding of why Black Christian graduate students are more likely to leave or not pursue advanced degrees in biology with implications for research and practice that help facilitate their success.  相似文献   

基于P-范分布下的三维激光点位误差分布检验     

刘土生 《科技广场》2014,(10)

目前,在对三维激光点位误差模型进行推导的过程中,都是假设三维激光点位误差是服从正态分布的,而由于三维激光点位误差源与传统测量仪器中的误差源不同,同时外界环境对激光点位误差的影响也不相同,因此,不能直接断定点位误差服从正态分布,需要对其理论分析及数据统计分析验证。针对三维激光点位误差分布状况,本文对激光点位误差模型进行了推导,并通过大量数据统计分析验证了激光点位误差服从的分布状况。  相似文献   

基于Android的测土配方施肥查询系统     

宋超  王鲁 《科技广场》2014,(10)

本文详细介绍了基于Android的测土配方施肥查询系统的总体设计及详细设计。该系统基于Android移动操作系统,采用克里格插值方法对山东省章丘市土壤养分信息进行数据处理,通过Web Service提供数据查询服务,采用C/S三层体系结构,借助于GPS和GPRS技术,实现了手机所定位地块的土壤养分信息移动查询,并采用目标产量法向用户提供合理施肥建议。用户可以通过该系统方便快捷地获取准确的土壤养分信息以及合理的施肥建议,这对于测土配方施肥技术的推广有积极作用。  相似文献   

港珠澳大桥青州航道桥钢锚箱整体组装技术研究     

安雪松 《中国科技纵横》2014,(4):125-127

根据港珠澳大桥青州航道桥钢锚箱的结构特点,介绍其在车间整体组装过程中采取的技术方案,以控制钢锚箱整体组装精度,使钢锚箱成品各部尺寸满足规定要求。  相似文献   

基于信道化接收机的Link-16信号盒维数检测算法研究     

刘博文  杨建波  刘鹏  韩啸 《环球赛鸽科技》2014,(27)

针对美军及北约部队常用的数据链Link-16的性能特点,结合装备应用实际,提出了基于信道化接收机利用分形盒维数对Link-16信号进行检测的算法。首先建立了信道化接收机的模型,并利用仿真软件进行了蒙特卡洛实验,得到了多个虚警概率下的Link-16信号检测概率。在虚警概率为0.1、信噪比为-3dB时,检测概率在60%以上;在相同虚警概率时,在低信噪比环境下,盒维数检测的性能要优于能量检测。  相似文献   

“Big Blade”赛艇双桨桨叶性能的试验研究   总被引：3，自引：1，他引：2  

郑伟涛  韩久瑞  黄谦  葛新发 《武汉体育学院学报》1999,(2)

本文对赛艇刚性“BigBlade”双桨桨叶在循环水槽中进行了试验研究。试验在桨叶的不同攻角、斜角、转角以及不同深度下进行。试验表明：以上参数对桨叶的流体动力性能有较大的影响，桨叶的浸水深度应保持在一定的范围，而转角和斜角应尽量的小。这些结果为教练员运动员进行科学训练提供了理论依据，不同的运动员应根据实际情况调整桨架，保持桨叶的合适深度。  相似文献   

Sanitizing the Struggle: Barack Obama,Selma, and Civil Rights Memory     

Theon E. Hill 《Communication quarterly》2017,65(3):354-376

In this article, I examine Barack Obama’s use of collective memory during his 2007 campaign speech in Selma, Alabama. Specifically, I argue that Obama appeals to collective memory to challenge the Black community’s relationship to the past. He reframed the memory of the Civil Rights Movement in a manner favorable to his political aspirations. While this frame was politically expedient, it weakened Black political agency. It robbed the Black community of crucial rhetorical resources used to challenge structural inequalities in society. This article offers insight into the complex relationship between metaphor and collective memory. Specifically, I interrogate the role of metaphor as a crucial site where public memory is formed, disrupted, and rearticulated. Furthermore, I consider the implications of his use of memory for the future of the Black freedom struggle.  相似文献   

精心设计小桥涵创建节约型山区高速公路     

旷斌 《中国科技信息》2006,(17):113-115

小桥涵是山区高速公路构造物的重要组成部分之一。因地形地貌等的差异常常需要修建大量的小桥涵，对小桥涵进行精心勘察设计，将会有效地降低山区高速公路的工程造价。现就小桥涵的结构类型、布设位置和洞口类型的选择进行经验性总结归纳，并以车行箱涵为例进行分析探讨。  相似文献