Adaptive audio watermarking based on SNR in localized regions

In this paper, a novel localized audio watermarking scheme based on signal to noise ratio （SNR） to determine a scaling parameter a is proposed. The basic idea is to embed watermark in selected high inflexion regions, and the intensity of embedded watermarks are modified by adaptively adjusting a. As these high inflexion local regions usually correspond to music edges like sound of percussion instruments, explosion or transition of mixed music, which represent the music rhythm or tempo and are very important to human auditory perception, the embedded watermark is especially expected to escape the distortions caused by time domain synchronization attacks. Taking advantage of localization and SNR, the method shows strong robustness against common problems in audio signal processing, random cropping, time scale modification, etc.     

吊环十字支撑类动作的“时间”和“角度”状况及对训练的思考——昆明全国体操冠军赛吊环分析

对1995年9月昆明全国体操冠军赛吊环比赛中3个十字支撑动作的“时间”和“角度”状况的观察与统计,分析了吊环十字支撑类动作存在的问题,为进一步探讨发展我国吊环技术水平的途径,提出了训练中提高十字支撑类动作的“时间”和“角度”规格的思路、措施和建议.     

汇编语言写音乐程序

利用汇编语言开发了一个具有一定娱乐性和实用性的音乐程序。     

The effect of the simultaneous Prompting–Constant time delay instructional sequence on the teaching of early academic skills to students with intellectual disabilities

This study investigated the effectiveness of combining simultaneous prompting (SP) and constant time delay (CTD) (hereafter SP–CTD instructional sequence) in teaching early academic skills to five students with intellectual disabilities (ID). A multiple-probe design was used to examine the functional relationship between the SP and CTD instructional sequence and the acquisition of letter–sound correspondences and number recognition. The results showed the effectiveness of the procedure, as all students acquired their target skills in 7–12 sessions, with an average error rate of 8%. Maintenance effects were assessed at 2, 6, and 10 weeks after the intervention to measure participants’ retention of these acquired skills. Three students preserved their skills with 100% accuracy, while two students did so with more than 90% accuracy. The data indicate that instruction consisting of probe trials, 0-s trials, and 5-s trials leads to improvements in early academic skills among students with ID.     

基于短时平均幅度的语音端点检测的改进

介绍了计算机语音处理中端点检测的方法,分析了短时平均幅度的语音端点检测的不足之处,并提出改进方法,最后给出实验结果。     

一类时滞泛函微分方程三个正周期解的存在性

该文利用Leggett-Williams不动点定理讨论了一类时滞泛函微分方程三个正周期解的存在性.     

应用型本科院校C语言教学初探

分析了应用型本科院校当前C语言教学中存在的问题,在此基础上提出了完善语言教学体系,整合语言教学内容,激发语言学习兴趣,重视语言实践环节的教学思路。     

加强环境规划 发展生态城市—济源市城市生态环境建设研究

通过对济源市自然条件，工业结构，城市布局，环境质量现状分析，揭示了城市发展中突出的环境生态问题，建议小城市建设从区域性生态平衡出发，加强环境规划，因地制宜，建立城市生态系统同周围其它区域性生态系统正常联系，发展特色城市。     

基于VB的滑索悬索设计系统

在已建立滑索悬索设计数学模型的基础上，利用Visual Basic6．0配套研制滑索的悬索设计系统．系统界面友好，易于操作，避免烦琐的人工计算过程，可以实现给定参数输人，进行滑速迭代计算、安全性与耐久性检验等，为滑索的悬索设计提供科学依据．     

高职ASP程序设计课程的项目教学法实施

ASP程序设计课程是高职计算机网络技术专业的核心课程。高职ASP程序设计课程采用传统教学模式已无法满足当今社会的需求。本着切实体现“以就业为导向,以能力为本位”的办学理念,在ASP课程的教学改革中引入项目教学法可大大改进教学效果,能更好地适应社会需求。