Alkali-metal Na Adsorption and Promoted Oxidation on Si(100)2×1 Surface

The alkali-metal Na adsorption on Si(100)2×1 surface and its promoted oxidation and Si oxidegrowth have been investigated by means of thermal desorption,work function,Auger electronspectroscopy and photoemission electron spectroscopy.The experimental data showed that therewas a new state,interface electron state,near the Fermi level after the deposition of Na atoms.It wasfound that the presence of Na always caused an increase of the oxygen initial uptake whereas thepromotion of Si oxide growth was observed only at the coverage of Na greater than 0.5 ML.A newmechanism of Na-promoted Si oxide growth is suggested in this paper.     

Voigt线型及其精确快速算法

通过把上半复平面分为４个区，并在每一区利用不同近似，建立了一种精确快速计算Ｖｏｉｇｔ函数、修正的Ｖｏｉｇｔ函数和Ｖｏｉｇｔ函数偏导数的算法，其最大相对误差小于５×１０－４．该算法是Ｌｉｎｅ－ｂｙ－Ｌｉｎｅ大气透过率／辐射强度计算及其相关应用的有效算法．     

钢管内径光电检测装置

介绍了一种检测细长钢管内径的光电检测装置。该装置利用线阵ＣＣＤ作传感器，采用８０３１单片机作为主控制。     

抽油机减速器齿轮的失效分析

找出了人字齿轮减速器在工作中右端齿轮出现严重磨损的原因并进行了分析。提出在国内现有制造技术的条件下，对于37kN·m以下的减速器应推广使用斜齿轮传动。     

蒸汽凝结水除油试验研究

介绍了利用类萃取技术进行蒸汽凝结水除油的过程。利用具有亲油功能的HOL-100树脂,经过试验和工业应用证明,萃取除油可以达到1．0mg/L以下,可满足炼油化工装置锅炉用水对含油量的要求。HOL-100树脂具有在高温状态下(120℃)除油的特点。通过标定考核,萃取除油技术是一项节能、节水、环保措施,可在中石油和中石化企业推广应用。     

Feature extraction using recursive cluster-based linear discriminant with application to face recognition.

A novel recursive procedure for extracting discriminant features, termed recursive cluster-based linear discriminant (RCLD), is proposed in this paper. Compared to the traditional Fisher linear discriminant (FLD) and its variations, RCLD has a number of advantages. First of all, it relaxes the constraint on the total number of features that can be extracted. Second, it fully exploits all information available for discrimination. In addition, RCLD is able to cope with multimodal distributions, which overcomes an inherent problem of conventional FLDs, which assumes uni-modal class distributions. Extensive experiments have been carried out on various types of face recognition problems for Yale, Olivetti Research Laboratory, and JAFFE databases to evaluate and compare the performance of the proposed algorithm with other feature extraction methods. The resulting improvement of performances by the new feature extraction scheme is significant.     

新型改性有机硅防水剂合成工艺研究

利用丙烯酸系单体对普通有机硅防水剂进行改性,合成一种新型的改性有机硅防水剂。丙烯酸系单体比例为5%～13%,A、B2种表面活性剂复合使用且m(A)∶m(B)=1∶1时,对有机硅的改性效果最好。     

LNG气化站自控仪表系统设计方案探讨

依据LNG存储和气化工艺以及生产管理对自控仪表系统的要求,介绍LNG气化站自控仪表系统设计过程应进行研究的几个主要环节,并对其设计原则及系统结构进行了概述,以满足供气工况的要求。     

一种改进的基于OOC的MWOOC

从理论上分析了一种基于光正交码（OOC）的多波长光正交码（MWOOC）的性能。给出了一种改进的基于OOC的MWOOC，并且蛤体分析了它的性能。与原MWOOC比较，改进的MWOOC的误码率性能基本相同，但码字数增加很多。     

Modeling Power Supply Noise in Delay Testing

Excessive power supply noise during test can cause overkill. This article discusses two models for supply noise in delay testing and their application to test compaction. The proposed noise models avoid complicated power network analysis, making them much faster than existing power noise analysis tools. can cause performance degradation and