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81.
为情而造文与为文而造情在《文心雕龙·情采》篇中以一组对立的概念出现,关于为情而造文历来受到研究者们的肯定与重视,但为文而造情一直遭到尖锐的批判,只有个别学者加以研究与肯定。关于两者的比较研究目前尚未开展,对二者进行比较研究,有助于探索文学本位,正确对待儒家传统文化。  相似文献   
82.
We give an upper bound for the expected value of the largest order statistic of a simple random sample of size n from a discrete distribution on N points. We also characterize the distributions that attain such bound. In the particular case n=2, we obtain a characterization of the discrete uniform distribution. © 1998 Elsevier Science B.V. All rights reserved.  相似文献   
83.
This research presents the development of behavioral scoring models to predict future customer purchases in an online ordering application. Internet retailing lowers many barriers for customers switching between retailers for repeat purchases; thus, retaining existing customers is a key challenge for achieving profitability. Survey data were collected from 1,089 online customers of two companies. The subjective survey data were then used to predict purchases over the ensuing 12 months based on data from the company databases. The analysis illustrates the general applicability of predictive models of future customer purchases while also demonstrating the need to develop specific models tailored for an individual company's operating and marketing environment. The models provide insight on how companies can target marketing dollars more effectively and allocate investment across multiple operational areas for maximum return. The research answers a call for rigorous research in the area of predictive marketing, an area in which many companies are excelling but where there is a scarcity of detailed knowledge regarding application of such models.  相似文献   
84.
在马克思的社会发展理论中,包含着一个关于社会进步与社会秩序及其相互关系的深刻的理论说明:(1)社会进步的路径有其规律可循,同时社会进步的具体展开过程又是开放性的。(2)人的尺度、物的尺度和人与物相统一的尺度是衡量社会进步的三个基本尺度;在不同的历史时期,衡量社会进步由其主导性尺度,同时尺度又是多样性的;不同种类、层级的进步尺度之间既可能是和谐兼顾的,又可能是矛盾冲突的,而且和谐兼顾与矛盾冲突往往相互交织。(3)社会进步的人的尺度与物的尺度之间的复杂关系,折射出社会进步与社会秩序之间的复杂关系;社会进步对社会秩序的作用具有内在的不确定性,既有积极的重塑作用,又有消极的破坏作用,而且积极作用和消极作用往往相互交织。(4)不但社会进步的物的尺度与人的尺度存在复杂的关系,对这两个评价尺度的评价也是一个十分复杂的问题,对于尺度本身的评价,既要处理好现实评价与理想评价的关系,又要处理好道德评价与历史评价的关系。这个理论说明对于我们认识中国模式的内在生成逻辑具有重要启发意义。  相似文献   
85.
李敢 《北方论丛》2011,(1):143-147
立足于为"十二五"规划建言献策,经由社会学结构功能论去论析为更好地理解与解决现时中国经济发展模式中的深层次矛盾与问题(如内需不足和社会分化),筑建社会学取向下以公民权利和政府责任臻善为愿景的社会建设路径是必要的,同时以经济社会学"交易秩序"理论为基本分析工具去论析实施此转变的缘由及其可能路径。  相似文献   
86.
奥巴马政府的行政改革是从“缩小国家秘密”开始的,2009年底奥巴马总统颁布第13526号行政命令,开启了美国保密行政管理改革的新篇章。奥巴马政府的改革不仅是为了实现竞选承诺,而且是迫于国内体制改革的压力,尤其是保密管理中累积的诸多问题,已严重影响了整个行政系统的工作效率。因此,奥巴马政府提出了全新的保密管理理念和改革举措,并在一年的新政中取得可喜成绩,这些全新的理念和举措对我国的保密管理体制改革有很强的启示意义。  相似文献   
87.
For attribute data with (very) small failure rates often control charts are used which decide whether to stop or to continue each time r failures have occurred, for some r?1. Because of the small probabilities involved, such charts are very sensitive to estimation effects. This is true in particular if the underlying failure rate varies and hence the distributions involved are not geometric. Such a situation calls for a nonparametric approach, but this may require far more Phase I observations than are typically available in practice. In the present paper it is shown how this obstacle can be effectively overcome by looking not at the sum but rather at the maximum of each group of size r.  相似文献   
88.
Baker (2008 Baker, R. (2008). An order-statistics-based method for constructing multivariate distributions with fixed marginals. J. Multivariate Anal. 99: 23122327.[Crossref], [Web of Science ®] [Google Scholar]) introduced a new class of bivariate distributions based on distributions of order statistics from two independent samples of size n. Lin and Huang (2010 Lin, G.D., Huang, J.S. (2010). A note on the maximum correlation for Baker’s bivariate distributions with fixed marginals. J. Multivariate Anal. 101: 22272233.[Crossref], [Web of Science ®] [Google Scholar]) discovered an important property of Baker’s distribution and showed that the Pearson’s correlation coefficient for this distribution converges to maximum attainable value, i.e., the correlation coefficient of the Fréchet upper bound, as n increases to infinity. Bairamov and Bayramoglu (2013 Bairamov, I., Bayramoglu, K. (2013). From Huang-Kotz distribution to Baker’s distribution. J. Multivariate Anal. 113: 106115.[Crossref], [Web of Science ®] [Google Scholar]) investigated a new class of bivariate distributions constructed by using Baker’s model and distributions of order statistics from dependent random variables, allowing higher correlation than that of Baker’s distribution. In this article, a new class of Baker’s type bivariate distributions with high correlation are constructed based on distributions of order statistics by using an arbitrary continuous copula instead of the product copula.  相似文献   
89.
The problem of predicting times to failure of units from the Exponential Distribution which are censored under a simple step-stress model is considered in this article. We discuss two types of censoring—regular and progressive Type I—and two kinds of predictors—the maximum likelihood predictors (MLP) and the conditional median predictors (CMP) for each type of censoring. Numerical examples are used to illustrate the prediction methods. Using simulation studies, mean squared prediction error (MSPE) and prediction intervals are generated for these examples. MLP and the CMP are then compared with respect to MSPE and the prediction interval.  相似文献   
90.
The aim of this article is to establish the optimal control of a periodic-review inventory system with two suppliers. One of them delivers orders immediately, the other one is unreliable delivering the orders immediately only with probability p ∈ (0, 1). Two cases are considered. In the first case, it is possible to order any inventory amount from each of suppliers. In the second case, the system budget is restricted.  相似文献   
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