莆仙话中“山、宕、臻、通”古韵混读现象试析     

蔡国妹 《闽江学院学报》2000,(5)

莆仙人讲普通话时合 (撮 )口鼻韵母混读现象极其严重 ,当前已成为全省推广普通话的难点之一。这种混读的韵母主要来源于古韵 (《广韵》)的山、宕、臻、通四撮的合口舒声韵。本文试就此作些分析 ,并力求给予合理的解释 ,提出可行的建议 ,以期对莆仙人学习普通话有所裨益  相似文献   

竞技健美操成套动作的创编   总被引：12，自引：0，他引：12  

周燕 《体育学刊》2003,10(6):83-84

健美操成套动作内容的创编必须符合规则要求的同时突出个性，音乐、动作(操化、难度、连接与过渡等)风格必须统一，主题突出，多样性和主题完美结合，具有明显的健美操项目特征，并紧密地结合成为一个整体。  相似文献   

Delphi数据集过滤技术及其应用     

刘传领  李娜 《商丘职业技术学院学报》2004,3(6):44-45,51

数据库的筛选是管理信息系统中极为重要的一项功能，论述了Delphi中基于BDE的数据集的过滤方法，并给出了一些应用实例。  相似文献   

Examining Scientific Vocabulary: Mapping Controlled Vocabularies with Free Text Keywords     

Hollie White 《Cataloging & classification quarterly》2013,51(6):655-674

Scientific repositories create a new environment for studying traditional information science issues. The interaction between indexing terms provided by users and controlled vocabularies continues to be an area of debate and study. This article reports and analyzes findings from a study that mapped the relationships between free text keywords and controlled vocabulary terms used in the sciences. Based on this study's findings recommendations are made about which vocabularies may be better to use in scientific data repositories.  相似文献   

Public Transit and School Choice in Philadelphia: Exploring Spatial Equity and Social Exclusion     

Michael R. Scott  David T. Marshall 《Journal of School Choice》2019,13(2):177-197

This article explores the importance of considering transportation mode when calculating commute time for a child’s school choice options. While proponents of school choice argue that students can attend any school that will provide them the best education, several have argued that commute time is as important for families as a school’s characteristics. However, research to date models commute time using either distance as a proxy or minutes driving. In Philadelphia, a context where most people use public transportation to work and school, the authors argue that commute time to school must be calculated using this mode of transit. Using geospatial network analyses, the authors create choice sets for each neighborhood public high school. They first calculate the commute time between each zoned public high school and each public high school choice in the city by driving and by using public transportation. These two sets of commute times are then evaluated for the differences. The authors then calculate choice sets based on the average commute time in the city based on both modes of transportation. Finally, they compare the choice sets for each service area for spatial equity of public school quality. Findings indicate that the commute times between driving and public transportation are statistically different. Furthermore, public school choice sets within Philadelphia are spatially equitable, although the overall school quality needs improvement. The article concludes with policy implications and recommendations for future research.  相似文献   

时滞相关Logistic函数浮点数据模糊加密稀疏集构造   总被引：1，自引：0，他引：1  

李晓靖 《科技通报》2015,(2):98-100

提出一种基于时滞相关Logistic函数线性调频采样的浮点数据模糊加密算法优化技术,给出时滞相关Logistic函数及相关定义,研究了浮点数据的模糊编码算法,设计实时交互网络的浮点数据模糊加密方案,实现密钥稀疏集构造,采用基于稀疏矩阵的存储格式下的时滞相关Logistic函数浮点数据加密运算,构造密钥稀疏集,优化了算法性能。仿真结果表明,算法数据加密和解密性能较好,具有较高的数据吞吐量,能实现对大数据库的数据加密,提高了密文的不可预测性。  相似文献   

基于 Hausdorff 距离的分形研究     

王春梅 《滨州学院学报》2015,(2):73-76

把 Hausdorff 距离应用到分形研究中,并编程完成了任意两个广义 MJ集间Hausdorff 距离的计算,通过 Hausdorff 距离的值可以得到广义 MJ集间的匹配程度。为进一步研究广义 MJ集提供了一种新方法。  相似文献   

基于Vague集的模糊多属性决策方法     

张运良 《西安文理学院学报》2010,13(3):7-11

提出基于Vague集理论来处理模糊多属性决策问题的一些方法.对Chen和Tan（Fuzzy setsand Systems 67（1994））163-172）、Hong和Choi（Fuzzy sets and Systems 114（2000）103-113）等两篇论文中所提出的记分函数和精确函数进行分析验证和改进,并给出了处理模糊多属性决策问题的新方法.结果表明：新方法能够使得决策排序是严格有序的,避免了排序中不易决策的问题.  相似文献   

基于粗集理论的教学质量评价模型     

王宁  郭志林 《德州学院学报》2010,26(4):8-12

利用属性重要性等概念,提出了一种基于粗糙集理论的属性权重确定方法,将主观权重和客观权重结合起来,建立了一种基于粗糙集理论的教学质量综合评判模型,使权重确定更加合理,评判结果更加科学、客观,最后通过实例验证了该方法的实用性和可行性.  相似文献   

完全分配格中标准极大（小）集的一个刻画     

赵海信  毕文凤  李令强  孟广武 《临沂师范学院学报》2010,32(6):28-30

定义了偏序集L上的一个新关系〉,对任意完备格L引入了标准极大集的概念.当L为完全分配格时,利用L上的关系〉（way below关系〈〈）给出了标准极大（小）集的一个刻画.  相似文献