曲面斜截体椭圆投影成圆的几何条件及其应用

鉴于曲面回转体斜截后生成的椭圆交线，不利于作图和应用，提出转化其投影成圆的几何条件，从而为求诸如贯穿点和相贯线等，从方法上提供新的尝试。     

月季的切花保鲜配方的研究

以“深圳红”月季切花为实验材料，研究不同保鲜处理在常温瓶插期间对月季切花观赏品质以及瓶插寿命的影响，月季切花采后常温瓶插期间脯氨酸含量的变化。结果表明，不同保鲜处理对月季的保鲜作用存在较明显差异，自来水瓶插的效果最差，瓶插平均观赏寿命只有5天，可利鲜对月季切花的保鲜效果最好，瓶插平均观赏寿命为10天，能有效提高月季切花的吸水能力，且能明显提高月季切花的观赏价值。     

切花百合采后衰老研究进展

文章综述了切花百合的采后品质以及衰老生理的近期研究成果,阐述了切花百合衰老与水分平衡、呼吸作用、碳水化合物、蛋白质、膜稳定性、内源激素、外部环境因子的关系.文章认为：在切花百合采后保持适当的水分平衡,降低呼吸代谢,减少碳水化合物的消耗,在保鲜液中加入一定的糖、杀菌剂、乙烯抑制剂等都可以减缓其衰老,延长切花百合的瓶插寿命.     

An Investigation of Undefined Cut Scores With the Hofstee Standard‐Setting Method

This article provides an overview of the Hofstee standard‐setting method and illustrates several situations where the Hofstee method will produce undefined cut scores. The situations where the cut scores will be undefined involve cases where the line segment derived from the Hofstee ratings does not intersect the score distribution curve based on actual exam performance data. Data from 15 standard settings performed by a credentialing organization are used to investigate how common undefined cut scores are with the Hofstee method and to compare cut scores derived from the Hofstee method with those from the Beuk method. Results suggest that when Hofstee cut scores exist that the Hofstee and Beuk methods often yield fairly similar results. However, it is shown that undefined Hofstee cut scores did occur in a few situations. When Hofstee cut scores are undefined, it is suggested that one extend the Hofstee line segment so that it intersects the score distribution curve to estimate cut scores. Analyses show that extending the line segment to estimate cut scores often yields similar results to the Beuk method. The article concludes with a discussion of what these results may imply for people who want to employ the Hofstee method.     

《说文解字》少数字今读与反切规律音相异撷例研究

徐鉉為《說文解字》所注的音即大徐反切,是研究中古語音的重要材料。本文通過仔細研究發現了少數字今讀與反切規律音相異的狀況。本文从《说文解字》"少数字"中选取了五个例字,进行了具体分析并试着指出发生这种相异现象的原因。这种现象的研究有助於對古漢語材料進行注釋,也有助於現代字書辭典的編纂修訂。     

望闻问切与毕业班班主任工作浅谈

＂望、闻、问、切＂是中医诊断的传统的方法,又称为＂四诊＂。本文将试从＂望、闻、问、切＂的角度,就毕业班班主任如何开展工作浅谈一二。     

二重积分的一个可积条件及性质

本文主要研究了矩形区域上二重积分的一个可积条件及性质．     

硬盘还原卡新功能在公共计算机实验室中的应用

本文讨论了硬盘还原卡的原理和新功能在公共计算机实验室中的应用。随着学校公共计算机实验室新的问题的产生,还原卡的功能也在逐步加强。利用断点续传、差异拷贝技术、硬盘IDE通道保护技术可以帮助管理员从繁琐的维护任务中摆脱出来,从而节省大量时间,有效地提高了工作效率。     

The Cauchy-Schwarz divergence and Parzen windowing: Connections to graph theory and Mercer kernels

This paper contributes a tutorial level discussion of some interesting properties of the recent Cauchy-Schwarz (CS) divergence measure between probability density functions. This measure brings together elements from several different machine learning fields, namely information theory, graph theory and Mercer kernel and spectral theory. These connections are revealed when estimating the CS divergence non-parametrically using the Parzen window technique for density estimation. An important consequence of these connections is that they enhance our understanding of the different machine learning schemes relative to each other.     

一种基于模糊划分的知识发现

借助截集和覆盖的思想,并利用包含度理论定义了覆盖因子,刻画了条件属性包含于决策属性的程度,也即决策属性对条件属性的依赖程度,对模糊信息系统进行知识发现。就医疗诊断系统进行规则提取并进而得出了较客观的诊断。