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91.
英语科技论文写作与国际检索系统收录规则 总被引:5,自引:0,他引:5
熊春茹 《南京航空航天大学学报(社会科学版)》2002,4(4):83-86
近年来国际重要检索系统逐渐导入一系列检索系统的收录规则并以此作为论文检索与收录的标准。国内广大英文科技论文作者应从文题、摘要、关键词和参考文献以及论文编排规范等方面入手 ,了解并适应新的收录规则以指导英语科技论文的写作 相似文献
92.
文化现代化是现代化中最艰难的文化转型.新中国60年来,历史的发展赋予中国文化现代化以鲜明的时代特征.思考新中国60年来文化现代化,从文化与经济政治、时代性与民族性、本土化与全球化、一元与多元、文化事业和文化产业、人的发展与社会发展等六对矛盾着手,辨证把握中国文化现代化的特征,有助于我们深化对中国文化现代化的规律性和艰巨性的认识. 相似文献
93.
从1949年新中国成立至今,已经整整印年.新中国60年的历程,就是党领导全国各族人民探索、建立、发展中国特色社会主义的光辉历程.新中国成立60年以来,我们在经济建设、政治建设、文化建设和社会建设等各方面取得了举世瞩目的辉煌成就.总结新中国60年的宝贵经验,有助于我们坚持中国特色社会主义道路,进一步推动中国特色社会主义伟大事业向前发展. 相似文献
94.
For capture–recapture models when covariates are subject to measurement errors and missing data, a set of estimating equations is constructed to estimate population size and relevant parameters. These estimating equations can be solved by an algorithm similar to the EM algorithm. The proposed method is also applicable to the situation when covariates with no measurement errors have missing data. Simulation studies are used to assess the performance of the proposed estimator. The estimator is also applied to a capture–recapture experiment on the bird species Prinia flaviventris in Hong Kong. The Canadian Journal of Statistics 37: 645–658; 2009 © 2009 Statistical Society of Canada 相似文献
95.
We investigate how to combine marginal assessments about the values that random variables assume separately into a model for the values that they assume jointly, when (i) these marginal assessments are modelled by means of coherent lower previsions and (ii) we have the additional assumption that the random variables are forward epistemically irrelevant to each other. We consider and provide arguments for two possible combinations, namely the forward irrelevant natural extension and the forward irrelevant product, and we study the relationships between them. Our treatment also uncovers an interesting connection between the behavioural theory of coherent lower previsions, and Shafer and Vovk's game-theoretic approach to probability theory. 相似文献
96.
In this paper, we consider finite populations and investigate their characterizations by regressions of order statistics under sampling without replacement. We also investigate some asymptotic results when the size of the population goes to infinity. 相似文献
97.
The equality of ordinary least squares estimator (OLSE), best linear unbiased estimator (BLUE) and best linear unbiased predictor (BLUP) in the general linear model with new observations is investigated through matrix rank method, some new necessary and sufficient conditions are given. 相似文献
98.
A supersaturated design is a design whose run size is not enough for estimating all the main effects. It is commonly used in screening experiments, where the goals are to identify sparse and dominant active factors with low cost. In this paper, we study a variable selection method via the Dantzig selector, proposed by Candes and Tao [2007. The Dantzig selector: statistical estimation when p is much larger than n. Annals of Statistics 35, 2313–2351], to screen important effects. A graphical procedure and an automated procedure are suggested to accompany with the method. Simulation shows that this method performs well compared to existing methods in the literature and is more efficient at estimating the model size. 相似文献
99.
Non-central chi-squared distribution plays a vital role in statistical testing procedures. Estimation of the non-centrality parameter provides valuable information for the power calculation of the associated test. We are interested in the statistical inference property of the non-centrality parameter estimate based on one observation (usually a summary statistic) from a truncated chi-squared distribution. This work is motivated by the application of the flexible two-stage design in case–control studies, where the sample size needed for the second stage of a two-stage study can be determined adaptively by the results of the first stage. We first study the moment estimate for the truncated distribution and prove its existence, uniqueness, and inadmissibility and convergence properties. We then define a new class of estimates that includes the moment estimate as a special case. Among this class of estimates, we recommend to use one member that outperforms the moment estimate in a wide range of scenarios. We also present two methods for constructing confidence intervals. Simulation studies are conducted to evaluate the performance of the proposed point and interval estimates. 相似文献
100.
Continuous non-Gaussian stationary processes of the OU-type are becoming increasingly popular given their flexibility in modelling stylized features of financial series such as asymmetry, heavy tails and jumps. The use of non-Gaussian marginal distributions makes likelihood analysis of these processes unfeasible for virtually all cases of interest. This paper exploits the self-decomposability of the marginal laws of OU processes to provide explicit expressions of the characteristic function which can be applied to several models as well as to develop efficient estimation techniques based on the empirical characteristic function. Extensions to OU-based stochastic volatility models are provided. 相似文献