Using State Assessments for Predicting Student Success in Dual‐Enrollment College Classes     

Neal M. Kingston  Gretchen Anderson 《Educational Measurement》2013,32(3):3-10

Scores on state standards‐based assessments are readily available and may be an appropriate alternative to traditional placement tests for assigning or accepting students into particular courses. Many community colleges do not require test scores for admissions purposes but do require some kind of placement scores for first‐year English and math courses. In this study, we examine the efficacy of using the reading and math portions of the Kansas State Assessment (KSA) for predicting the success of high school students taking College Algebra and College English I at a Kansas community college. Results showed that in this sample KSA scores predicted as well or better than more traditional placement tests and with no extra cost to the institution.  相似文献   

A hybrid system of pedagogical pattern recommendations based on singular value decomposition and variable data attributes     

Carlos Cobos  Orlando Rodriguez  Jarvein Rivera  John Betancourt  Martha Mendoza  Elizabeth León  Enrique Herrera-Viedma 《Information processing & management》2013

To carry out effective teaching/learning processes, lecturers in a variety of educational institutions frequently need support. They therefore resort to advice from more experienced lecturers, to formal training processes such as specializations, master or doctoral degrees, or to self-training. High costs in time and money are invariably involved in the processes of formal training, while self-training and advice each bring their own specific risks (e.g. of following new trends that are not fully evaluated or the risk of applying techniques that are inappropriate in specific contexts).This paper presents a system that allows lecturers to define their best teaching strategies for use in the context of a specific class. The context is defined by: the specific characteristics of the subject being treated, the specific objectives that are expected to be achieved in the classroom session, the profile of the students on the course, the dominant characteristics of the teacher, and the classroom environment for each session, among others. The system presented is the Recommendation System of Pedagogical Patterns (RSPP). To construct the RSPP, an ontology representing the pedagogical patterns and their interaction with the fundamentals of the educational process was defined. A web information system was also defined to record information on courses, students, lecturers, etc.; an option based on a unified hybrid model (for content and collaborative filtering) of recommendations for pedagogical patterns was further added to the system. RSPP features a minable view, a tabular structure that summarizes and organizes the information registered in the rest of the system as well as facilitating the task of recommendation. The data recorded in the minable view is taken to a latent space, where noise is reduced and the essence of the information contained in the structure is distilled. This process makes use of Singular Value Decomposition (SVD), commonly used by information retrieval and recommendation systems. Satisfactory results both in the accuracy of the recommendations and in the use of the general application open the door for further research and expand the role of recommender systems in educational teacher support processes.  相似文献   

Normalization effect of sports training on blood pressure in hypertensives     

Pavle Mikulić  Tomislav Smoljanović  Ivan Bojanić  Jo Hannafin  Zbreveeljko Pedisbreveić 《Journal of sports sciences》2013,31(4):361-366

Abstract

In this study, we assessed the extent to which 2000-m rowing ergometer performance predicted final rankings at the World Junior Rowing Championship in a sample of 398 junior rowers competing in 13 events. The rowers' ergometer performance times were examined using a questionnaire, and in all 13 events they correlated (P ≤ 0.039) with the final rankings at the Championship. The strongest correlations were observed for ergometer performance times in junior women's single sculls (r = 0.92; P < 0.001), followed by junior men's single sculls (r = 0.80; P < 0.001) and junior women's double sculls (r = 0.79; P < 0.001). The observed correlations were higher for smaller boats – singles, doubles, and pairs (r = 0.64–0.92; P ≤ 0.025) – than for larger boats – quads, fours, and eights (r = 0.31–0.70; P ≤ 0.039). Linear regression analyses were used to construct regression equations to predict final rankings based on 2000-m rowing ergometer performance times for each event. Although correlations in 10 of the 13 events were above r = 0.5, the large standard errors of the estimate impaired the prediction of rankings in all of the studied events. Using these equations, the most probable rowing ergometer performance times required for a particular ranking in a given rowing event might easily be calculated.  相似文献   

福建省入境旅游规模时空差异及灰色模型预测分析     

徐熙侠  颜醒华 《昆明大学学报》2012,4(1):49-54,73

任何经济现象的空间分布都不是绝对平衡的。由于受经济发展水平、基础设施、服务设施、城市职能、旅游资源分布差异等的影响,入境旅游空间分布也存在差异。文章运用标准差、变异系数、基尼系数和赫芬达尔指数,分析福建入境旅游规模空间分布的差异程度,剖析其存在差异的原因,并构建福建省入境旅游规模的灰色预测GM（1,1）模型,对未来6年进行预测。研究得出：福建入境旅游规模的空间差异很大,集中化程度高,主要集中在厦门、泉州和福州三地。福建入境旅游规模基本上以每年12%的速度增长,入境旅游规模不断增大。  相似文献   

工程车辆驾驶室声学特性预测研究     

陈道齐 《福建工程学院学报》2012,(3):250-254

建立某型工程车辆驾驶室的结构有限元模型、空腔声学有限元模型。对驾驶室结构和室内空腔声场进行模态分析,得到结构振动特性和声学特性。计算分析驾驶室声-结构耦合模型在特定频率激励下的噪声分布情况,同时考虑吸声材料对驾驶员耳旁声压级值的影响,总结出在新车型开发阶段进行车内噪声预测和控制研究的有效方法。  相似文献   

伦敦奥运会女子竞技体操比赛前景分析     

吕玉萍 《武汉体育学院学报》2012,46(4):65-70,96

以参加伦敦奥运周期的3届世锦赛决赛的运动员为研究对象,对伦敦奥运会女子竞技体操比赛前景进行研究.结果表明:动作难度是获胜的基础,现场发挥是获胜的关键.团体决赛将呈俄美中“三足鼎立”之势,俄美稍具优势;个人全能的竞争主要在俄罗斯的穆斯塔菲娜与以美国威伯为领军的团队之间进行;俄罗斯队在高低杠、美国队在跳马、中国队在平衡木项目上稍占上风,欧洲、美国、中国和澳大利亚等国,都有自由体操高手,冠军归属将取决于临场的状态和发挥水平.中国队当前最紧迫的任务是努力提高跳马的难度,改进高低杠的编排,力争在伦敦奥运会上再创佳绩.  相似文献   

基于模糊预测技术的生产柔性组织方法     

成海毅  王鹏  杨晓段 《科教文汇》2012,(16):102-103

本文提出采用模糊指数平滑预测技术对产品需求进行预测,应用模糊线性规划建模求解生产组织计划柔性地适用产品市场需求变化。此方法客观地反映了产品需求演变过程的复杂性和生产组织计划的合理性。  相似文献   

基于状态趋势预测方法的城市机动车保有量预测     

徐亚丹 《科技通报》2012,28(9):11-14

将2000-2010年的杭州市机动车保有量的时间序列用非线性回归拟合得到趋势曲线方程,并以趋势曲线为基准划分2个状态区间,再用马尔可夫转移概率来刻画系统的数值波动规律。通过对杭州市2010年机动车保有量预测值与实际值进行比较,可知该模型预测精度较好。并基于该模型用状态趋势预测方法对2011年杭州市机动车保有量进行预测。  相似文献   

最小二乘法线损率预测技术研究     

陈宗梅 《科技通报》2012,28(6):109-111

为了提高预测精度,提出了一种改进的最小二乘法线损预测技术。算法首次将核偏最小二乘回归算法应用于线损率预测。实验表明,提出的方法能够较好地克服变量相关性和非线性因素对预测模型的不利影响。  相似文献   

房地产销售价格指数的神经网络预测     

张喆  姚亚辉 《中国科技信息》2012,(19):114-115

房地产销售价格指数是指导业界活动和市场研究的有效工具,但是预测的准确程度一直是人们倍加关注的。人工神经网络是一门新兴交叉学科,近年来被越来越多的应用到了实际问题的预测中,显示出其广阔的应用前景,特别是人工神经网络具有预测非线性系统未来行为的巨大潜力。因此,本文提出了用人工神经网络对房地产销售价格指数进行预测的方法,首先将输入数据进行预处理,再利用多层前馈神经网络BP算法来研究人工神经网络在房地产销售价格指数预测中的应用问题,最后得出神经网络方法预测精度较高的结论。  相似文献