高考英语书面表达的特点及应试策略

近几年的高考,英语书面表达越来越趋向于由控制型向开放型过渡,重视创设情景。开放型试题扩大了学生自由发挥的空间,有利于考查学生的观察力、想象力以及遣词造句和组句成篇的能力。通过分析近五年书面表达的命题特点,对学生如何应试和老师的教学提出几点建议。     

语文教育审美能力略论

语文教育审美能力,是指从事语文教育活动的审美主体即师生(施教主体和受教主体),按照审美意识即审美观念(审美观点、审美情趣、审美标准、审美理想等)和审美心理(审美感知、审美理解、审美情感、审美想象等),对审美客体即文本(文章、文学等)所蕴涵的审美因素即审美形态(自然美、社会美、艺术美、科学美等)和审美范畴(优柔美、崇高美、悲剧美、喜剧美等),在审美时所必需的审美能力即审美感受能力、审美鉴赏能力和审美创造能力。     

远场涡流检测技术研究的发展及现状

综述了远场涡流检测技术领域的发展状况,着重介绍了新型、高效远场涡流探头的性能及发展趋势.     

Autoregressive distributed lag models and cointegration

Summary This paper considers cointegration analysis within an autoregressive distributed lag (ADL) framework. First, different reparameterizations and interpretations are reviewed. Then we show that the estimation of a cointegrating vector from an ADL specification is equivalent to that from an error-correction (EC) model. Therefore, asymptotic normality available in the ADL model under exogeneity carries over to the EC estimator. Next, we review cointegration tests based on EC regressions. Special attention is paid to the effect of linear time trends in case of regressions without detrending. Finally, the relevance of our asymptotic results in finite samples is investigated by means of computer experiments. In particular, it turns out that the conditional EC model is superior to the unconditional one. We thank Vladimir Kuzin for excellent research assistance and Surayyo Kabilova for skillful word processing. Moreover, we are grateful to an anonymous referee for clarifying comments.     

论语言测试的可靠性和有效性

语言测试研究是应用语言学的一个分支。分析语言测试中的两个重要原则问题——测试的可靠性和有效性以及影响测试的可靠性和有效性的各种因素 ,可以探讨语言测试可靠性的测定方法和有效性的标准     

The Cusum Test for Parameter Change in Time Series Models

Abstract.  In this paper, we consider the problem of testing for parameter changes in time series models based on a cusum test. Although the test procedure is well established for the mean and variance in time series models, a general parameter case has not been discussed in the literature. Therefore, here we develop a cusum test for parameter change in a more general framework. As an example, we consider the change of the parameters in a random coeefficient autoregressive (1) model and that of the autocovariances of a linear process. Simulation results are reported for illustration.     

Conditional inference under simultaneous stochastic ordering constraints

Testing for stochastic ordering is of considerable importance when increasing does of a treatment are being compared, but in applications involving multivariate responses has received much less attention. We propose a permutation test for testing against multivariate stochastic ordering. This test is distribution-free and no assumption is made about the dependence relations among variables. A comparative simulation study shows that the proposed solution exhibits a good overall performance when compared with existing tests that can be used for the same problem.     

Nonparametric test for checking lack of fit of the quantité regression model under random censoring

The author proposes a nonparametric test for checking the lack of fit of the quantile function of survival time given the covariates; she assumes that survival time is subjected to random right censoring. Her test statistic is a kemel‐based smoothing estimator of a moment condition. The test statistic is asymptotically Gaussian under the null hypothesis. The author investigates its behavior under local alternative sequences. She assesses its finite‐sample power through simulations and illustrates its use with the Stanford heart transplant data.     

A Multinomial‐Dirichlet Model for Analysis of Competing Hypotheses

Analysis of competing hypothesis, a method for evaluating explanations of observed evidence, is used in numerous fields, including counterterrorism, psychology, and intelligence analysis. We propose a Bayesian extension of the methodology, posing the problem in terms of a multinomial‐Dirichlet hierarchical model. The yet‐to‐be observed true hypothesis is regarded as a multinomial random variable and the evaluation of the evidence is treated as a structured elicitation of a prior distribution on the probabilities of the hypotheses. This model provides the user with measures of uncertainty for the probabilities of the hypotheses. We discuss inference, such as point and interval estimates of hypothesis probabilities, ratios of hypothesis probabilities, and Bayes factors. A simple example involving the stadium relocation of the San Diego Chargers is used to illustrate the method. We also present several extensions of the model that enable it to handle special types of evidence, including evidence that is irrelevant to one or more hypotheses, evidence against hypotheses, and evidence that is subject to deception.     

自实时读写的E~2PROM系统设计

本文给出了一个能实现对E~2PROM自实时读写的专用智能系统,它将E~2PROM空间作为数据存贮区,从而使系统能在断电状态保持实时参数或者初始化结果。 面向实际应用,这一工作的意义十分明显。