评定波纹度的一个新参数——波形系数

本文从波纹度对轴承振动影响的角度,提出了一个能够用来评定波纹度波形特征的新参数:波形系数Sc,并对其含义和计算方法作了详尽的讨论。     

分层选择题:学生学业成就诊断性评价新方法

分层选择题是一种新的选择题形式,其选项的设计与学生的认知发展模型相联系,每个选项能够反映学生理解能力的发展水平.相比传统的选择题形式,分层选择题能够帮助教师和教育研究者更好地对学生的学业水平进行诊断性评价.     

A New Statistic for Detection of Aberrant Answer Changes

As noted by Fremer and Olson, analysis of answer changes is often used to investigate testing irregularities because the analysis is readily performed and has proven its value in practice. Researchers such as Belov, Sinharay and Johnson, van der Linden and Jeon, van der Linden and Lewis, and Wollack, Cohen, and Eckerly have suggested several statistics for detection of aberrant answer changes. This article suggests a new statistic that is based on the likelihood ratio test. An advantage of the new statistic is that it follows the standard normal distribution under the null hypothesis of no aberrant answer changes. It is demonstrated in a detailed simulation study that the Type I error rate of the new statistic is very close to the nominal level and the power of the new statistic is satisfactory in comparison to those of several existing statistics for detecting aberrant answer changes. The new statistic and several existing statistics were shown to provide useful information for a real data set. Given the increasing interest in analysis of answer changes, the new statistic promises to be useful to measurement practitioners.     

New Ways to Evaluate Goodness of Fit: A Note on Using Equivalence Testing to Assess Structural Equation Models

Structural equation models are typically evaluated on the basis of goodness-of-fit indexes. Despite their popularity, agreeing what value these indexes should attain to confidently decide between the acceptance and rejection of a model has been greatly debated. A recently proposed approach by means of equivalence testing has been recommended as a superior way to evaluate the goodness of fit of models. The approach has also been proposed as providing a necessary vehicle that can be used to advance the inferential nature of structural equation modeling as a confirmatory tool. The purpose of this article is to introduce readers to key ideas in equivalence testing and illustrate its use for conducting model–data fit assessments. Two confirmatory factor analysis models in which a priori specified latent variable models with known structure and tested against data are used as examples. It is advocated that whenever the goodness of fit of a model is to be assessed researchers should always examine the resulting values obtained via the equivalence testing approach.     

教材语言调查统计方法的新发展——基于基础教育新课标人教版、苏教版、北师大版、语文版的比较

对于任何一门科学而言,其成熟的主要标志是研究方法的科学化、系统化.在教材语言研究的过程中,开始我们多使用频次、文本数和分布率、累计频率等统计方法.由于教材语言具有基础性、有限性和有序性的特点,我们进一步提出教材语言统计的新方法,即复现调查法、使用度调查和频率差等教材语言统计方法.调查方法的发展和演进,有助于我们对教材语言的特点、性质和面貌有更进一步的认识.     

安徽省城市化进程的实证分析

首先阐述了城市化发展及对城市化进程的影响因素的研究情况,对安徽省的城市化发展进程进行了分析,利用具体数据建立模型对安徽省城市化水平与经济增长的关系进行了实证分析,最后就加快安徽城市化进程提出了相应的政策建议。     

大学生创造性素质评价的初步研究

开展创造性素质评价是促进大学生创造性素质形成和发展的重要举措，也是高校创造性教育研究的重要课题。本从介绍创造性的基本内涵与评价方法、技术入手，对大学生创造性素质评价标准体系作了初步分析和勾勒，提出了开展大学生创造性素质评价的基本策略。     

论衡量城市建设文化品位的尺度

城市建设的化内涵包括城市建设中人的活动成果和活动方式及其所蕴涵，所显示的观念和思维方式。衡量城市建设化品位的主要尺度包括；环境的保护和生态建设，物保护与城市建设发展矛盾的解决，城市建设所体现的人特色，城市建设与自然条件的协调统一，城市交通系统的建设和管理，景观审美准则。     

依恋测量方法简评

依恋研究主要有三种研究方法:陌生情景法、成人依恋访谈法和问卷法,上述研究方法有着不同的测量学基础——类型和维度。依恋研究方法的发展趋势是类型和维度的整合,同时应关注测量对象的特定化问题。     

Curriculum Mapping: A Method to Assess and Refine Undergraduate Degree Programs

Over the past several decades, there has been increasing interest in program‐ and university‐level assessment and aligning learning outcomes to program content. Curriculum mapping is a tool that creates a visual map of all courses in the curriculum and how they relate to curriculum learning outcomes. Assessment tools/activities are often included in the curriculum map. The School of Food Science, a joint program between the Washington State Univ. and the Univ. of Idaho, recently completed a curriculum mapping and assessment exercise. The goal of this exercise was to determine the alignment of the undergraduate curriculum with program learning outcomes and the degree of student mastery of these outcomes. Curriculum learning outcomes were revised from existing learning outcomes to better align with university learning outcomes and the IFT Core Competencies. All undergraduate courses were mapped to the IFT Core Competencies, and several competencies were assessed to determine student mastery. The mapping and assessment activities revealed potential gaps and redundancies in course content, as well as student ability to meet standards for competency. The results of the mapping and assessment exercises will be used to refine the content delivered to undergraduate students in the School of Food Science, with the overall goal of increasing the quality of the education provided to these students and helping them to be more prepared for a successful career in food science.     

Nietzsche: A Philosopher of Fitness

Research on the complex issues that underpin Talent Identification and Development (TID) appears to be divided into five key constructs: sport specialization and selection, practice, athlete development, junior and adult success, and the role of stakeholders in the sport system. Analysis of each construct indicates that differences exist between research theory and reality in terms of outcomes for practice in athlete development, although the reasons for this are unclear. These differences may, however, indicate reasons for the lack of adult success in young athletes identified as ‘talented.’ Further, analysis of the stakeholders construct also indicates both a lack of coherence in the understanding of TID systems and processes between key stakeholders in the TID process and a lack of research into the importance of such coherence in developing young athletes.     

批改高校学生作业的两种方法

由于高校教师用于批改学生作业的时间相对较少,整体批改和分题批改各有优缺点,而将二者结合不失为较全面地掌握学生状况、较客观地评价学生成就的方法之一。     

Using Social Media to Assess Conceptualizations of Sexuality

There is currently no validated model explaining the variability of sexual expression. This has created a scenario where sexuality, as a construct, is purely intuitive. Sexuality educators have frequently presented the Circles of Sexuality, a model that contends that sexuality is a combination of intimacy, sensuality, sexual health/behaviors, sexual identity, and sexualization. Adapting photovoice methodology and using the social media site Tumblr, the current analysis used this model to assess the social conceptualization of sexuality. Results indicate that the circles are unequally represented, with intimacy underrepresented and sexual identity overrepresented. Implications for sexuality educators, clinicians, and researchers are discussed.     

数理统计方法在组合证券投资中的一则注记

应用数理统计方法进行组合证券投资决策,以降低风险获得最高收益。     

苏州市健身俱乐部会员群体健身活动现状调查

健身俱乐部进入中国以来,为人们提供了新的健身方式,且在全民健身的开展中发挥重要作用.本研究通过对苏州市健身俱乐部40名会员健身活动现状进行了深入的调查,并针对其基本情况、健身动机、健身的频率、时长及负荷、准备活动及整理活动等方面进行分析,得出结论与建议,为进一步规范苏州市健身俱乐部市场、提升苏州居民的健身水平提供参考.     

A New Statistic for Selecting the Smoothing Parameter for Polynomial Loglinear Equating Under the Random Groups Design

Smoothing is designed to yield smoother equating results that can reduce random equating error without introducing very much systematic error. The main objective of this study is to propose a new statistic and to compare its performance to the performance of the Akaike information criterion and likelihood ratio chi-square difference statistics in selecting the smoothing parameter for polynomial loglinear equating under the random groups design. These model selection statistics were compared for four sample sizes (500, 1,000, 2,000, and 3,000) and eight simulated equating conditions, including both conditions where equating is not needed and conditions where equating is needed. The results suggest that all model selection statistics tend to improve the equating accuracy by reducing the total equating error. The new statistic tended to have less overall error than the other two methods.