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981.
"交互性"阅读是一种新的阅读模式.它主要是由自然互动、内在动机、策略运用、冒险尝试等基本特征构成.近几年出版的国内大学英语教材均采用了这种"交互"式的阅读模式,但通过分析其中较有影响的 3套教材后发现阅读活动"交互性"程度差异很大,或是有些要素缺失,或是名不符实,因而有必要进行修正. 相似文献
982.
近几年来,江西软件产业开始进入较快发展阶段,但与全球产业的发展相比,尚存在许多不足。从市场细分、目标市场、市场定位(STP)的角度对软件市场的分析结果来看,江西软件产业市场的发展应实行"三步走,递增发展主线"的市场发展战略。 相似文献
983.
Modeling the demand reduction input-output (I-O) inoperability due to terrorism of interconnected infrastructures. 总被引:1,自引:0,他引:1
Interdependency analysis in the context of this article is a process of assessing and managing risks inherent in a system of interconnected entities (e.g., infrastructures or industry sectors). Invoking the principles of input-output (I-O) and decomposition analysis, the article offers a framework for describing how terrorism-induced perturbations can propagate due to interconnectedness. Data published by the Bureau of Economic Analysis Division of the U.S. Department of Commerce is utilized to present applications to serve as test beds for the proposed framework. Specifically, a case study estimating the economic impact of airline demand perturbations to national-level U.S. sectors is made possible using I-O matrices. A ranking of the affected sectors according to their vulnerability to perturbations originating from a primary sector (e.g., air transportation) can serve as important input to risk management. For example, limited resources can be prioritized for the "top-n" sectors that are perceived to suffer the greatest economic losses due to terrorism. In addition, regional decomposition via location quotients enables the analysis of local-level terrorism events. The Regional I-O Multiplier System II (RIMS II) Division of the U.S. Department of Commerce is the agency responsible for releasing the regional multipliers for various geographical resolutions (economic areas, states, and counties). A regional-level case study demonstrates a process of estimating the economic impact of transportation-related scenarios on industry sectors within Economic Area 010 (the New York metropolitan region and vicinities). 相似文献
984.
周军 《淮海工学院学报(社会科学版)》2004,2(2):58-61
"自我"的问题,在中国文化体系中一直是一个敏感的问题.透过中国传统文化中关于自我观的现象,分析了关于"自我"的理念.提出了"自我观"在中国传统文化中的"道德化"倾向,以及"道德化自我"演变成"泛道德化自我"的极端状态的基本历程.同时,从文化学的角度论述了确立正确的"自我观"所要处理好的三个关系,即德性与才性的关系、个体与社会的关系、科学与人文的关系. 相似文献
985.
中国农村发展水平因子分析 总被引:1,自引:0,他引:1
"三农"问题已成为制约中国经济社会发展的瓶颈性因素,而要有效地解决"三农"问题,首先要对中国不同地区农村发展水平做出相对客观的评价。选取一系列的评价指标,运用多元统计分析中的因子分析方法,30个省区的农村发展水平作整体综合分析,得出各地区农村发展水平的概况,并在此基础上指出了各地区解决农村发展问题的重点。 相似文献
986.
在调整我国刑事庭审的"诱导性规则"里,诱导性询问仅被赋予消极的内涵而遭禁绝,从而直接影响了刑事庭审中司法公正、效率等多元价值的实现.在较为均衡的价值观的指导下,借鉴对抗制国家的立法经验,建立完善的符合我国实际的诱导性规则,是刑事庭审方式改革的当务之急. 相似文献
987.
When estimating the distributions of two random variables, X and Y, investigators often have prior information that Y tends to be bigger than X. To formalize this prior belief, one could potentially assume stochastic ordering between X and Y, which implies Pr(X < or = z) > or = Pr(Y < or = z) for all z in the domain of X and Y. Stochastic ordering is quite restrictive, though, and this article focuses instead on Bayesian estimation of the distribution functions of X and Y under the weaker stochastic precedence constraint, Pr(X < or = Y) > or = 0.5. We consider the case where both X and Y are categorical variables with common support and develop a Gibbs sampling algorithm for posterior computation. The method is then generalized to the case where X and Y are survival times. The proposed approach is illustrated using data on survival after tumor removal for patients with malignant melanoma. 相似文献
988.
Recurrent events are frequently observed in biomedical studies, and often more than one type of event is of interest. Follow-up time may be censored due to loss to follow-up or administrative censoring. We propose a class of semi-parametric marginal means/rates models, with a general relative risk form, for assessing the effect of covariates on the censored event processes of interest. We formulate estimating equations for the model parameters, and examine asymptotic properties of the parameter estimators. Finite sample properties of the regression coefficients are examined through simulations. The proposed methods are applied to a retrospective cohort study of risk factors for preschool asthma. 相似文献
989.
The complex Bingham distribution is relevant for the shape analysis of landmark data in two dimensions. In this paper it is shown that the problem of simulating from this distribution reduces to simulation from a truncated multivariate exponential distribution. Several simulation methods are described and their efficiencies are compared. 相似文献
990.
Regression models for survival data are often specified from the hazard function while classical regression analysis of quantitative outcomes focuses on the mean value (possibly after suitable transformations). Methods for regression analysis of mean survival time and the related quantity, the restricted mean survival time, are reviewed and compared to a method based on pseudo-observations. Both Monte Carlo simulations and two real data sets are studied. It is concluded that while existing methods may be superior for analysis of the mean, pseudo-observations seem well suited when the restricted mean is studied. 相似文献