基于USB2.0的实时视频图像采集系统设计

介绍了基于usb2．0协议的实时视频图像采集系统。给出了该系统的硬件组成原理及软件设计方法。主要介绍了采样控制器的设计。这种设计具有功能集成度高，实现方便的优点。具有较高的实用推广价值。     

Bayes决策法在股票价格预测中的应用

对股票价格的预测直接影响到投资者的投资决策，关系到投资者的切身经济利益，因而对预测的准确性要求较高．本文根据Bayes决策理论，尝试建立Bayes模型，并通过具体的实例分析，证明该模型具有较高的实用价格．     

论解读教育-兼论导致我国大陆"零诺贝尔奖"的主要原因不在教育

解读教育不仅要注意教育“事实” ,而且要把解读者与教育联系起来 ,从两者整体关系上深刻理解教育。而一旦尊重教育事实 ,人们就不难得出我国大陆“零诺贝尔奖”的主要原因不在教育的结论。在这个基础上 ,解读者设身处地观察教育 ,与教育工作者将心比心 ,必然感到用“零诺贝尔奖”非难我国教育 ,会伤害广大教育工作者感情 ,掩盖真正的矛盾 ,不利于我国教育发展。     

柳州方言单字音声调声学实验研究

采用实验语音学的方法研究柳州方言单字音声调的音高特征,用Lz-score的方法对原始基频数据进行标准化处理,再根据五度标调法的原则确定各声调的调值,并将实验结果和传统方言学的研究结果进行比较分析发现:基频曲线调型走势是相同的,但具体调值略有不同。     

C0—Semigroup Method of the Density Evolution Equation for M／M／∞ Model

In this paper,the existence,uniqueness,and asymptotic behavior of the solution of the density evolution equation for M/M/∞ model was studied by the semigroup theory of linear operators.     

校园网络计费系统的研究与开发

基于数据链路层的流量计费系统在selectI/O复用技术的支持下能达到很好的效果，再加上稳定可袁的数据库技术和www方式的用户界面，使得整个系统运行准确、可急、方便。     

Backward wellposedness of nonuniform Timoshenko beam equation

In this paper, we consider the Timoshenko equation of a nonuniform beam, with clamped boundary condition at one end and with feedback controls at the other end. It is proved that the system is backward wellposedness when the feedback controls are weak enough. Project supported partially by the National Key Project of China and the Natural Science Foundation of China (No. 69874034).     

积和式的性质与应用

积和式的计算是组合矩阵理论中一个相当困难的问题,给出了积和式的一些基本性质,并进一步讨论了某些特殊矩阵的积和式的计算.     

换个角度看《中图法》中的“0”

《中图法》加"0",已经是图书馆界研究成果颇多的一个论题,《中图法》加"0"和其本身的编制原则有很大关系,目的是为了保证《中图法》编制的逻辑性和系统性,从这个角度出发,对《中图法》中加"0"进行分析,力求从大思路角度下把握"0"标引的规则。     

Student incentives and preferential treatment in college admissions

We consider a framework in which the optimal admissions policy of a purely academic-quality oriented college implements preferential treatment in favor of the student from the deprived socioeconomic background which maximizes the competition between candidates. We find that the exact form of the preferential treatment admissions policy matters for student incentives and hence for student-body diversity in equilibrium. Preferential treatment policy in college admissions often takes, or is perceived to take, an additive form where the score of the applicant from the deprived background is augmented by a fixed number of points. Such a preferential treatment policy fails to incentivize students from the deprived background. Despite the affirmative action, the level of preferential treatment that achieves academic excellence leaves student-body diversity unchanged compared with a background-blind admissions policy and leads to a higher intergroup score gap.