产生英语中介语错误的两点原因分析

文章基于非英语专业大学生英语写作中的典型错误语料的定性分析,讨论了汉语空成分结构、主题结构投射对基础阶段二语习得的影响,指出汉语空成分结构、汉语主题突出结构是英语中介语错误的主要原因。强调英语学习阶段增强学生源语言意识,注意输入的质与量及了解英汉语言特征差异,是十分必要的。     

Two Results Useful for Implementing Litterman's Procedure for Interpolating a Time Series

Comparing forecasts with actually observed values is one possible way to check the structural stability of time series. In this study, prediction tests based on this principle are investigated in the context of multiple time series analysis. It is found that the power of tests based on univariate series may exceed that of tests based on multivariate series and vice versa. Therefore, it is proposed to use both kinds of tests in practice. The tests are used to investigate the stability of a system of West German economic data during and after the 1973–1974 and 1979–1980 oil price increases.     

Estimating the point of intersection of two lines under correlation

This paper introduces a new biostatistical approach to the problems of estimating true values and approximating the distribution of true values from unreliable data.We present the basic rationale for the unmixing method and report on a simulation study of its properties in estimating the centiles of a skewed, outlier-prone class of distributions.We also present an application to highly skewed USDA vitamin A intake data, and a pseudo-code version of the unmixing algorithm that we hope will allow other researchers to experiment with it     

梳状音叉MEMS陀螺非随机误差分析

研究了一种典型结构的梳状音叉MEMS陀螺的非随机性误差特性。综合考虑梳状音叉MEMS陀螺质心偏移、硅的非等弹性等因素,分析该陀螺中的非随机性干扰力矩;从二阶欠阻尼控制系统的角度,讨论了干扰力矩在陀螺内调制、解调环节下对输出的影响;推导出开环灵敏度随温度、比力和角速度的变化关系。在一定近似条件下,得到梳状音叉MEMS陀螺非随机性误差模型的形式。     

高中《语文》第一册注解的错误急需改正

中学《语文》课文的注解对帮助学生学习有重要作用,而现在课文的注解竟然多有各种错误.高中《语文》第一册注解的错误竟有18处,急需改正.     

Bias of S 2 in Linear Regressions with Dependent Errors

Bounds are given for the expected value of the estimator of the error variance in linear regressions, when the errors are dependent or heteroscedastic. The bounds are valid irrespective of the covariance structure between the errors. Necessary and sufficient conditions to attain the bounds are supplied.     

Quantifying costs of forecast errors: A case study of the warehouse environment

Our study evaluates the impact of forecast errors on organizational cost by simulating a labor-intensive warehouse environment using realistic cost data from a case study. Unlike past studies that measure forecast error in terms of forecast standard deviation, our study also considers the impact of forecast bias, and the complex interaction between these variables. Two cases of organizational cost curves are considered, with differing and asymmetric structures. Results find forecast bias to have a considerably greater impact on organizational cost than forecast standard deviation. Particularly damaging is a high bias in the presence of high forecast standard deviation. Although biasing the forecast in the least costly direction is shown to yield lower costs, sensitivity analysis shows that increasing bias beyond the optimum point rapidly increases costs. ‘Overshooting’ the optimal amount of bias appears to be more damaging than not biasing the forecast at all. Given that managers often deliberately bias their forecasts, this finding underscores the importance of having a good understanding of organizational cost structures before arbitrarily introducing bias. This finding also suggests that managers should exercise caution when introducing bias, particularly for forecasts that inherently have large errors. These findings have important implications for organizational decision making beyond the simulated warehouse, as high forecast errors are endemic to many labor-intensive organizations.     

试论解放战争时期土改运动中的左倾错误

解放战争时期,各解放区大规模地开展了土地改革运动.在土改运动中,先后出现两次左倾错误.在本文中,作者考察了左倾错误产生的背景,分析了左倾错误的特征、后果及根源.最后,作者介绍了中国共产党纠正左倾错误的努力,并对其意义给予了肯定.     

黄世仲生平诸问题再辨--兼与颜廷亮先生商榷

本文对时人有关黄世仲生平事迹研究中的几个错误进行了辨正,提出了作者自己的看法.     

徐中玉、齐森华主编《大学语文》（第八版）指瑕

徐中玉、齐森华主编的《大学语文》（第八版）在古文的注释和断句等方面仍存在一些问题，这些问题主要是由于不明古汉语语法结构和汉语词汇发展史而造成的。