关于分块乘法的初等变换及其应用举例     

徐运动 《鄂州大学学报》2004,11(4):47-48

该文阐述了分块乘法和初等变换相结合在矩阵计算中的广泛应用.  相似文献   

不完备信息系统的矩阵约简算法     

桑妍丽  梁吉业  庞天杰 《长治学院学报》2005,22(2):19-20

粗糙集理论是用来解决不确定性的新的数学工具，而知识约简是粗糙集理论中一个重要的研究课题。J．W．Guan等提出了信息系统下的矩阵算法。章则是进一步讨论不完备信息表下的矩阵约简算法，实例表明该算法是有效的，具有一定的应用价值。  相似文献   

Developing local oral reading fluency cut scores for predicting high‐stakes test performance          下载免费PDF全文

Sally L. Grapin  John H. Kranzler  Nancy Waldron  Diana Joyce‐Beaulieu  James Algina 《Psychology in the schools》2017,54(9):932-946

This study evaluated the classification accuracy of a second grade oral reading fluency curriculum‐based measure (R‐CBM) in predicting third grade state test performance. It also compared the long‐term classification accuracy of local and publisher‐recommended R‐CBM cut scores. Participants were 266 students who were divided into a calibration sample (n = 170) and two cross‐validation samples (n = 46; n = 50), respectively. Using calibration sample data, local fall, winter, and spring R‐CBM cut scores for predicting students’ state test performance were developed using three methods: discriminant analysis (DA), logistic regression (LR), and receiver operating characteristic curve analysis (ROC). The classification accuracy of local and publisher‐recommended cut scores was evaluated across subsamples. Only DA and ROC produced cut scores that maintained adequate sensitivity (≥.70) across cohorts; however, LR and publisher‐recommended scores had higher levels of specificity and overall correct classification. Implications for developing local cut scores are discussed.  相似文献   

浅谈对《MATLAB程序设计》课程基础教学内容的思考     

李豪 《教育教学论坛》2019,(18):264-266

本文简要介绍了MATLAB软件和《MATLAB程序设计》课程,结合笔者的教学实践,对程序设计的重要性给出了自己的认识,最后从四个方面对《MATLAB程序设计》课程的基础教学内容进行了探讨,并且给出了自己提高学生程序设计的途径。  相似文献   

Pauli矩阵的若干性质及应用     

李武明 《通化师范学院学报》2003,24(6):7-9

以Pauli矩阵为工具，讨论Clifford代数、Dirac代数及量子逻辑门的有关性质  相似文献   

Validation of a self-perceived media competence instrument for pre-service teachers / Validación de un instrumento de autopercepción de competencia mediática para docentes en formación     

Julio-César Mateus  Wilson Hernández-Breña  Mònica Figueras-Maz 《Cultura y Educación》2019,31(2):436-464

Abstract

Key to guaranteeing the fundamental human rights of freedom of expression and information is the development of media competence, particularly in schools. Training teachers in the area of media competence is particularly important for developing these skills in the broader citizenry. In order to provide educators and educational policymakers with a useful diagnostic tool, we have designed a self-perception questionnaire. The questionnaire was applied to a sample of Peruvian education students (N = 501). On the one hand, the results confirm the construct’s coherence, validity and instrumental reliability. On the other hand, they allow us to propose a theoretically based update to the way in which this construct is interpreted and applied, confirming the multidimensionality of media competence. Finally, we use this empirical evidence to discuss the integral, transversal and ecological status of media competence.  相似文献   

用微分代数方法求解半定规划     

李智勇  张圣贵 《莆田学院学报》2005,12(5):14-18,22

探讨先用大M法转化原半定规划问题,然后用微分代数方法求解,数值实验结果表明,用微分代数方法求解半定规划是切实可行的。  相似文献   

矩阵乘法的来源和意义     

李长明 《贵州教育学院学报》2002,13(4):13-15

本文依据矩阵的乘法规则探寻出它的实际意义 ,再联系理论上的价值 ,揭示了矩阵乘法的必要性  相似文献   

实正定矩阵的若干判定方法     

倪凌炜 《湖州师范学院学报》2004,26(2):125-128

运用高等代数中一系列矩阵论的相关知识，给出了实对称正定矩阵的若干判定方法，对一般实矩阵正定的性质和判定作了初步的讨论和研究，得到了一般实正定矩阵的几个重要性质和判定定理。  相似文献   

Assessing postgraduate student perceptions and measures of learning in a peer review feedback process     

Genevieve Simpson  Julian Clifton 《Assessment & Evaluation in Higher Education》2016,41(4):501-514

Peer review feedback, developed to assist students with increasing the quality of group reports and developing peer review skills, was added to a master’s level Climate Change Policy and Planning unit. A pre- and post-survey was conducted to determine whether students found the process a valuable learning opportunity: 87% of students responding to the post-review survey indicated they saw benefit in both developing and receiving peer review feedback. Peer review design minimising the potential for plagiarism resulted in low levels of student concern surrounding plagiarism. Marks allocated by students were valid (consistent with the lecturer) and were generally reliable; however, distribution of marks had a higher variance where group report quality was low. Training on completing the peer review template could result in more reliable feedback. Consistent with the literature, the feedback developed during the peer review process focused on style and presentation preferentially to content. Seven out of eight group reports improved between report submissions, with all groups responding to peer review feedback. Peer review feedback and changes made to group reports indicated students had limited capacity to judge the quality of referencing and critical analysis.  相似文献