Consistently inconsistent: An examination of the variability in the identification of emotional disturbance     

Kristin Scardamalia  Keisha L. Bentley‐Edwards  Kairys Grasty 《Psychology in the schools》2019,56(4):569-581

The federal definition of emotional disturbance (ED) has been heavily criticized as vaguely defined and poorly operationalized yet there has not been a formal analysis of the reliability of the ED criteria. This study examined the reliability of the federal criteria for a special education designation of ED. A total of 179 school psychologists reviewed a mock special education report, made an eligibility determination, and provided information about their eligibility decision. In all, 56 participants found the student met ED eligibility criteria using 16 different combinations of the five criteria. Krippendorff’s α, a statistic preferred for content analysis, was calculated as a measure of criterion reliability. Results indicated extremely poor reliability (α = 0.2011). These findings demonstrate the importance of redefining the existing criteria.  相似文献   

运用SPSS10.0软件进行教育统计分析可靠性的初步研究     

任安忠 《三门峡职业技术学院学报》2002,1(1):38-41

本文简要介绍了在教育科学研究中应用独立样本对总体平均数的差异显著性检验的方法,主要从人工计算和SPSS统计软件两方面对样本的显著性检验的方法进行了比较,从一个侧面探讨了SPSS10.0软件应用于教育科研的可靠性。  相似文献   

Structural Reliability of Broadside of a Bulk Carrier     

黄衍顺  涂跃红王琳 《天津大学学报(英文版)》2005,11(6):417-421

The ultimate bending moment and maximal shear stress of a bulk carrier with two structural forms （single hull and double hull/ are calculated separately by using the combined moment which is determined by stochastic process. Then the assessment of reliability is carried out. The results indicate that by introducing the double-hull structure, the shear stress of side can be decreased to half of that of the primary structure（ 50.7% i. but the effect on longitudinal strength is not obvious. Finally, the effects of different double-side skin widths on ultimate bending moment and the maximal shear stress are investigated, followed by proposals of the selection of the double-side skin width.  相似文献   

高校仪器设备寿命周期与延长寿命周期探讨     

陈新春 《衡阳师范学院学报》1996,(6)

本文结合笔者在教学仪器设备管理和使用维修中的实践经验，就设备自身寿命周期受有形磨损和无形磨损而老化；设备的先进程度，科学技术与生产力的发展速度对设备寿命周期的影响，掌握使用设备时期的规律，提高购置设备的超前意识等进行了讨论。  相似文献   

The stability of kindergarten teachers’ effectiveness: A generalizability study comparing the Framework For Teaching and the Classroom Assessment Scoring System     

Panayota Mantzicopoulos  Brian F. French  Helen Patrick  J. Samuel Watson  Inok Ahn 《Educational Assessment》2018,23(1):24-46

To meet recent accountability mandates, school districts are implementing assessment frameworks to document teachers’ effectiveness. Observational assessments play a key role in this process, albeit without compelling evidence of their psychometric rigor. Using a sample of kindergarten teachers, we employed Generalizability theory to investigate (across teachers, raters, and lessons) the stability of scores obtained with two different observation measures: The CLASS K-3 and the FFT. We conducted a series of Decision studies to document (for both measures’ constituent domains) the number of lessons per teacher and raters per lesson that would justify the use of observation scores for high stakes decisions. Acceptable, stable scores for individual-level decisions about teachers may generally require more raters and lessons than is typically used in practice (1–2 raters and fewer than 3 lessons). The considerable variability of observation-based scores raises concerns about either measure’s appropriateness for making individual or group decisions about teachers’ effectiveness.  相似文献   

项目无回答的成因与降低其水平的途径   总被引：2，自引：0，他引：2  

严洁 《华中师范大学学报(人文社会科学版)》2006,45(6):58-63

本文基于两个全国概率抽样调查的实证数据,采用序列变量逻辑斯蒂回归和稳健回归的分析方法,探讨了在中国社会科学概率抽样调查中影响项目无回答的主要因素,结果发现受访人的受教育水平、城乡、地域属性和年龄是对无回答水平最稳定、最关键的影响因素。在控制了这些人群特征和题目的难度类型之后,测量指标的信度水平对无回答也具有显著的影响。根据分析结果,本文从实践的角度提出了有关降低项目无回答水平的建议。  相似文献   

动态定位中机动和粗差检测延迟的探讨     

宋迎春 李琼吴芋  谢雪梅 《娄底师专学报》2006,(6):1-4

动态定位数据处理中，判定运动载体何时开始机动，测量数据何时出现粗差是一个困难的问题。为了在实时动态定位中尽可能快地检测出运动载体机动和观测数据何时出现粗差，文中提出了一种对机动和粗差检测的新方法。该检测算法是基于机动和粗差检测延迟最小的准则。通过分析，对不同的显著水平和机动幅度存在一个最优窗口长度。  相似文献   

机械零部件的可靠性设计分析     

张小勤  莫才颂 《茂名学院学报》2008,18(1):28-31

可靠性设计已广泛应用于机械零件设计.分析了机械零部件传统设计方法与可靠性设计方法在设计思想、设计原理上的区别,介绍了机械零件强度设计的应力-强度干涉理论,讨论了机械零件强度可靠度计算的一般表达式,并给出了机械零件可靠度设计的工程实例分析.通过实例设计结果的分析比较,说明可靠性设计的可行性与实用性.  相似文献   

试析应用能力考试(B级)中的翻译选择题     

桂俊玲  杜泉贵 《江西电力职业技术学院学报》2006,19(2):57-58

通过对江西省高等学校英语应用能力考试(B级)中61-64题翻译选择题的分析,论述了其信度和效度,提出把翻译选择题改为翻译题不会破坏试卷信效度的平衡,反而有助于学生英语实用能力的提高。  相似文献   

全集成化高可靠电视图象信号发生器的设计     

石英  王振伟 《衡阳师范学院学报》1990,(3)

这种新型电视图象信号发生器完全由集成电路构成。与通常的同类型仪器相比,该仪器性能稳定,可靠性高,无调整,体积小,价格低廉,很适合厂家成批生产,可广泛用于电视教学和家用电器的修理。  相似文献