在UBBE框架下考虑不肯定的上界的估计方法

对目前的ＵＢＢＥ模型进行了适当的推广，使在解决估计问题时可以考虑那些可能是误差上界的数值，并在此基础上提出了一种方法，能够通过对估计精度和可靠性进行合理的权衡确定所需估计值，实际案例研究结果表明所提方法能够较好地解决估计精度和可靠性之间的矛盾。     

Face Recognition Based on Support Vector Machine and Nearest Neighbor Classifier

Support vector machine (SVM), as a novel approach in pattern recognition, has demonstrated a success in face detection and face recognition. In this paper, a face recognition approach based on the SVM classifier with the nearest neighbor classifier (NNC) is proposed. The principal component analysis (PCA) is used to reduce the dimension and extract features. Then one-against-all stratedy is used to train the SVM classifiers. At the testing stage, we propose an al-     

视频汇流环的设计与研究

作者在文献[1]中从理论上阐明了视频汇流环的小型化设计。本文着重介绍视频汇流环的电器设计和它的测试方法。     

基于Windows NT的HRPS-Ⅱ设备的控制系统设计

介绍了华中科技大学开发的HRPS-Ⅱ型选择性激光烧结设备的体系结构，根据选择性激光烧结的工作原理并结合该系统的硬件结构开发了基于NT操作系统下的控制软件．该控制软件是一种分层的结构，各个不同优先级的任务在不同的层面上运行，实时性强的部分运行在硬件中断级别上，对控制软件的关键性技术进行了描述．通过试验运行，该设备成功地加工出了复杂的原型件，证明控制系统开发是成功的．     

板坯结晶器钢水凝固的数值模拟

以实测结晶器铜板温度计算的热流量作边界条件,采用有限元方法,建立了结晶器内凝固传热方程.对凝固传热方程进行了离散化,利用ANSYS商业软件进行求解,得到凝固坯壳的应力、应变情况,从而确定连铸结晶器壁的合理锥度.     

中国青年科技奖设奖20周年成效卓著

1987年,在时任中国科协主席钱学森院士的提议下,中国科协设立"中国科协青年科技奖",以鼓励青年科技工作者奋发进取,促进青年科技人才健康成长。     

数字式温度传感器在冰箱检测系统中的应用

本文介绍了数字式温度传感器的工作原理、性能特征以及如何在冰箱检测系统中引入单总线技术,使用数字式温度传感器更好的实现温度的采集。     

PP K-MEAN CLUSTERING

In this paper, we propose a dimension-reducing, K-mean clustering procedureby Projection Pursuit (PP) technique so as to explore the clustering structure of data inhigh-dimensional space in terms of low-dimensional projective points of data, and we obtainthe a.s. consistence of the estimates of the cluster centers and projection orientations.     

A New Discipline of Science-The Study of Open Complex Giant System and Its Methodology

This paper introduces the conception of open complex giant system and the methodology for dealing with the system, with stress on its profound significance in development of science and technology. The authors conclude that the reductionism underlying the exact science is not suitable to open complex giant system, and the only feasible alternative is the meta-synthetic engineering from the qualitative to the quantitative.     

固体导弹采用导管的分析研究

固体导弹由于测压、安全、关机与点火等的需要,采用的管路系统越来越多、越来越复杂,本文讨论了避免采用管路系统的重要性、可能性与具体方案,提出应严格制定并不断完善研制规范、加强管路系统的地面试验。