基于谐波消除PWM的RMOS逆变器的研制

根据规则采样ＰＷＭ的谐波消除原理，提出了一种适于单片机实现的三相ＰＷＭ算法，并用新型功率器件ＲＭＯＳ研制出谐波消除ＰＷＭ逆变器，通过仿真分析和实际运行验证了ＰＷＭ中的谐波消除效果。     

直流磁控溅射铂电阻薄膜

根据薄膜理论和通过成膜工艺实验，研究了影响铂薄膜电阻温度系数的主要因素。１）对铂靶材料的纯度要求高，含杂质极少；２）淀积薄膜要有一定厚度，通常近于１μｍ才能有较大的α；３）成膜以后，需经过高温热处理，减少缺陷，结晶化改善。通过大量实验，使用高铝陶瓷基片或微晶玻璃基片，溅射铂薄膜的厚度为８００ｎｍ，高温热处理１ｈ，可以获得电阻温度系数为３．８５０×１０－３／℃的铂电阻薄膜。     

A linear model-based test for the heterogeneity of conditional correlations

Current methods of testing the equality of conditional correlations of bivariate data on a third variable of interest (covariate) are limited due to discretizing of the covariate when it is continuous. In this study, we propose a linear model approach for estimation and hypothesis testing of the Pearson correlation coefficient, where the correlation itself can be modeled as a function of continuous covariates. The restricted maximum likelihood method is applied for parameter estimation, and the corrected likelihood ratio test is performed for hypothesis testing. This approach allows for flexible and robust inference and prediction of the conditional correlations based on the linear model. Simulation studies show that the proposed method is statistically more powerful and more flexible in accommodating complex covariate patterns than the existing methods. In addition, we illustrate the approach by analyzing the correlation between the physical component summary and the mental component summary of the MOS SF-36 form across a fair number of covariates in the national survey data.     

1300V/20A绝缘栅双极晶体管IGBT

基于理论概括与实验研究,已经在N~-/N~+/P~+外延基片上获得了1300V/20A高性能IGBT;并进而指出了实现该器件互相关联的关键技术。它们分别是:优质厚层低缺陷密度异型硅外延材料的工艺制备,器件纵横向几何结构及工作参数的准确量化,和通过叠加组合形成的复合高压终端结构。     

Joan Acker's influence on Management and Organization Studies: Review,analysis and directions for the future

This paper pays tribute to Joan Acker by discussing how her ideas have been utilized in Management and Organization Studies (MOS). Through a systematic review of journal articles citing Acker's scholarship from 2000 to 2017 (September), we show how recent scholarship has used Acker to advance discussions in the field and examine how her work was received, and which promises made by her work are still to be met. We identify avenues to carry her legacy forward with a view to realizing the transformative goal she posed as central to meaningful change in social, political and economic life through scholarship in the field of gender and organizations.     

超大规模集成电路的栅氧化技术

本文探索了一种能用于大规模 MOS 集成电路的栅氧化技术—补充后的两步 TCE法。笔者采用该法,在一般工厂的工艺条件下,制得了90%以上的 MOS 电容,击穿电场大于6MV/cm,可动电荷密度约为10~(10)cm~(-2),固定电荷密度约为10~(11)cm~(-2)的优质超薄氧化层。