The impact of immediate test score reporting on university students' achievement emotions in the context of computer-based multiple-choice exams

Test-taking is an emotion-laden event for many students. Typically, negative emotions are highest at the start of an examination and are replaced by positive emotions as the exam progresses. The impact of computer-based testing and immediate score reporting on students' emotions has not been examined. In Study 1, we evaluated university students’ emotions at the end of a computer-based exam and found positive emotions more strongly endorsed than negative. In Study 2, we replicated this finding and used a quasi-experimental pre-post design to examine how emotions changed in response to real examination scores. Exam scores presented immediately had significant positive effects on relief, pride, and hope and negative effects on anxiety and shame even after controlling for the corresponding emotion at the end of the exam. The one exception was anger, which was not impacted by examination score. No interaction effects were found.     

MIMO离散非线性系统的自适应Backstepping控制

研究MIMO离散非线性系统的自适应Backstepping控制,对包含两个三阶子系统的MIMO系统推出稳定的自适应控制器设计,并利用关键性引理和投影算法的性质证明了闭环系统的所有信号有界和保证跟踪性能.     

一个基于两个数学难题的签名方案的改进

对邵祖华等提出的基于两个数学难题的签名方案进行了改进，改进后的方案更具有安全性。     

可传递关系的算法实现

可传递二元关系的判定是离散数学中的一个难点．对于某个关系来说,判定它是否可传递的方法有许多．本文给出了判断可传递二元关系的一个充要条件,以及在计算机上实现的具体算法．     

一种基于任意长离散余弦变换的并行递归算法

基于Clenshaw递归公式以及离散余弦自身的对称性提出任意长离散余弦变换(DCT)的一种并行递归快速算法,给出了算法的滤波器实现结构;与现有的其它递归算法进行了计算复杂度的比较分析,结果表明我们的算法运算量大大减少且计算的滤波器结构使算法非常适合大规模集成电路(VLSI)的实现.     

Using a discrete choice experiment to estimate spectators’ willingness to pay for professional baseball park sportscape

The physical environment of sport facilities, referred to as the sportscape, has a substantial influence on the extent to which sport fans attend sporting events and revisit the facilities. Accordingly, professional franchises make efforts to construct new stadiums with different sportscape elements, which serve as important factors that determine spectators’ levels of attendance satisfaction. With a sample of South Korean baseball fans, the authors examine which sportscape components of professional ballparks are considered most important by spectators, as well as how baseball attendees indicate their willingness to pay for particular sportscape attributes. Based on a discrete choice experimental approach, results indicate that spectators place the greatest importance on fast access to ballparks largely dependent upon the location. Results also suggest that respondents are willing to pay KR₩4102 for one more subway line. Different strategies for developing successful sportscape components are discussed.     

Broadway productions and the value of a Tony Award

This article investigates the effect of a Tony nomination or win on the demand facing a Broadway production using a panel of weekly revenues for Broadway productions from 1996 to 2007. Our results indicate that the effect of a nomination or win is positive in the week of the announcement and gradually increases in successive weeks, presumably due to publicity and word-of-mouth. Winners experience an increase in demand as late as 1 year later when awards are publicized for the following season. Moreover, nominees that do not win the award are penalized heavily in the weeks following the Award announcements. We find that winning a Tony Award increases a production’s revenues by 12% in the week immediately following the Awards.

离散数学的教学改革实践研究

离散数学是一门综合性、应用性较强的计算机科学基础课程。为了让学生更好的掌握该课程的知识内容、提高学习兴趣和实践应用能力,本文通过分析国内外离散数学的教学改革现状,并结合本校的教学实践经验,对离散数学的教材、教学模式、学科结合三方面的教学改革实践进行了研究和总结。     

Transform domain technique for windowing the DCT and DST

In this paper, an algorithm is developed to apply Hann, Hamming, Blackman and related windows directly in the transform domain for the discrete cosine transform and discrete sine transform. These algorithms are useful in applications where windowing is required in order to minimize edge effects caused by implicit symmetries in the transform domain that are not replicated in the real-world data. Examples of such applications include data communication, adaptive system identification and filtering, real-time analysis of financial market data, etc. Software implementations in C language are also given.     

母函数及其在程序中的应用

母函数在组合数学中占有重要的地位,介绍了母函数定义及相关性质及其构造方法,通过实例详细介绍了具体的求解过程,并给出了核心程序。