Mapping Access and Opportunity for Students with Disabilities: Urban K–8 Schools as Pockets of Privilege

Abstract

Using a DisCrit intersectional lens and statistical and spatial methods, we trace how the creation of K-8 schools functioned to create pockets of privilege in one urban U.S. school district. K-8 schools were both whiter and wealthier than district averages, serving as “enclave” schools. Although far fewer students with disabilities were served in K-8 schools compared to traditional elementary and middle schools, those attending K-8 schools were more likely to be educated in inclusive settings.     

基于Web标准的CSS在Dreamweaver8中的使用

首先通过分析Web标准的内涵,指出使用CSS样式表格式化网页的重要性。为满足不断增长的喜欢使用Dreamweaver8软件设计网页的设计人员的需求,文章介绍了在DW8中使用CSS格式化网页的方法。     

基于AVR单片机的电阻分选仪

通用型电阻分选仪是电阻生产厂家的电阻生产线及相关用户对电阻进行范围筛选的关键仪表,是电阻质量检测的关键仪器.本设计选用可在线编程的AVR单片机ATmega8,它内带模拟比较器,I/O口可作A/D转换用.仪器采用恒流源电路,保证输出电流的恒定.采用3 1/2位LED数字显示器,读数直观清晰;上下限可自由设定;使用方便,实现了自动化、智能化.该产品性能稳定,反应速度快,功耗小,输出电流恒定,适用范围广.     

Dissensus,Street Art and School Change

This article draws upon Rancière’s concepts of the ‘distribution of the sensible’ and ‘dissensus’ in order to explore some of the tensions and processes at work in a multi‐year school change project that sought to transform a school through the ‘urban arts’. Building on student interest in extracurricular Hip‐Hop and street art programming, the school tried to integrate the urban arts across the curriculum through a partnership with local arts organisations and university researchers. While there were a number of project successes, the project also faced significant resistance, which in Rancière’s terms might be inevitable since the project tried to transform the dominant ways of doing and making in the school, displacing those who no longer saw themselves reflected. We understand the tensions in light of the disruptive power of street art and Hip‐Hop culture, but also as manifestations of antiblackness in education. Using data from a three‐year critical ethnography, we share a series of narrative vignettes which unpack the role of the visual arts in challenging the distribution of the sensible at the school, and offer insight into how teachers might have been better invited in as participants in dissensus.     

5,7-二氯-8-羟基喹啉固-液萃取法分离铈和铽的研究

以切片石蜡(PC)为稀释剂,5,7-二氯-8-羟基喹啉(HQ)为萃取剂,研究了铈(Ce4 )和铽(Tb3 )的固-液萃取性能.探讨了PC用量、酸度、HQ浓度对萃取分离的影响,斜率比法确定了PC中萃合物组成.     

七、八元瓜环与结晶猩红色主客体包结作用的研究

利用紫外可见吸收光谱详细考察了七、八元瓜环（Q[7]，Q[8]）与偶氮染料类客体结晶猩红色的相互作用以及包结配合物受体系pH值影响的情况。实验结果表明，Q川与结晶猩红色在作用的pH范围均是以1：1方式相互作用。Q[8]与结晶猩红色相互作用受到体系pH的影响：在“高”或“低”pH条件下。瓜环与客体不发生明显的相互作用；在“较高”和“较低”的pH范围。瓜环与结晶猩红色发生相互作用。主客体存在1：1和1：2两种作用模式的竞争；而在介于“较高”与“较低”的pH范围，Q[8]与客体发生相互作用，形成1：2的包结配合物。不同的瓜环-客体体系，不同作用阶段的pH范围各不相同。本文利用比较简单的实验方法。测定了相应的pH范围，并结合瓜环及客体的结构特征，对体系主客体在不同的pH值区域表现出的不同作用模式进行了初步探讨。     

社会经济调查中的样本轮换问题研究

在分析社会经济调查中样本轮换的原因后，对样本轮换率的确定方法进行了探讨，并在吸收前人优秀成果的基础上，提出了确定样本轮换率的两种方法：通过估计相关系数或根据设计效果系数来确定样本轮换率。子样本轮换是最好的样本轮换方法，美国每月零售贸易额调查的混合两水平样本轮换模式和现期人中调查的4—8—4模式是月度经常性抽样调查中两种比较理想的样本轮换模式。     

对中共八大关于国内主要矛盾判断的再认识

中共八大虽然对国内主要矛盾做出了新的判断,但由于在八大召开前,中共中央政治局、八大政治报告起草委员会没有讨论这一问题,刘少奇在《中国共产党中央委员会向第八次全国代表大会的政治报告》中也没有涉及这一理论问题,中国社会主要矛盾的内容是在八大闭幕前三天突然提出并匆忙写进《中国共产党第八次全国代表大会关于政治报告的决议》中去的。没有充分的研究讨论,导致了八大对中国国内主要矛盾论述比较粗略,文字表述不够准确科学。会后毛泽东对八大关于国内主要矛盾的论断持否定、怀疑态度并最终改变八大对国内主要矛盾的判断。由此可见,八大关于国内社会主要矛盾的结论不是中国共产党第一代领导集体的成熟一致的看法。     

基于GIS技术建立航道维护管理系统

本文探讨基于CIS技术、OA技术，和Internet／Intranet技术建立现代化航道维护管理系统的方法、功能模块划分，系统建立体系结构，系统支撑环境。通过Oracle8i和MapXtremeNT可以实现同时存储和管理大容量的空间数据和属性数据，并通过IE发布图形和事务信息，实现航道维护与管理工作的外业和室内办公一体化网络管理系统。对于提高航道维护与管理工作效率，提高应急事件的反应速度，具有极其重要的意义。     

Air Toxics Under the Big Sky: examining the effectiveness of authentic scientific research on high school students’ science skills and interest

Air Toxics Under the Big Sky is an environmental science outreach/education program that incorporates the Next Generation Science Standards (NGSS) 8 Practices with the goal of promoting knowledge and understanding of authentic scientific research in high school classrooms through air quality research. This research explored: (1) how the program affects student understanding of scientific inquiry and research and (2) how the open-inquiry learning opportunities provided by the program increase student interest in science as a career path. Treatment students received instruction related to air pollution (airborne particulate matter), associated health concerns, and training on how to operate air quality testing equipment. They then participated in a yearlong scientific research project in which they developed and tested hypotheses through research of their own design regarding the sources and concentrations of air pollution in their homes and communities. Results from an external evaluation revealed that treatment students developed a deeper understanding of scientific research than did comparison students, as measured by their ability to generate good hypotheses and research designs, and equally expressed an increased interest in pursuing a career in science. These results emphasize the value of and need for authentic science learning opportunities in the modern science classroom.