论释意理论视角下的同传口译得失

当今社会,经济飞速发展,全球交流与日俱增,口译日益重要。但在现实中,尤其是现场口译,译员会碰到平常演练中不会碰到的各种实际问题,会犯许多错误。本文运用法国释意学派翻译理论来发掘这一问题,以前外交部长答中外记者问的现场口译材料为研究对象,从认知的角度发现错误,分析错误产生的原因,并提出解决问题的办法。     

城市配送服务质量、供应商—顾客关系与顾客满意度关系模型——基于北京市的实证研究

随着城市物流的快速发展,城市配送服务质量日益成为顾客满意度的重要影响因素。为了研究城市配送服务质量(SQ)对供应商--顾客关系(SCR)和顾客满意度(CS)的影响程度,构建了一个概念结构方程,说明了三者之间直接和间接的相互作用,并根据在北京开展的实证研究对该模型进行了验证。结果表明,SQ对SCR和CS有显著而直接的影响,SQ通过SCR还对CS产生间接影响,而SCR与CS之间有显著而直接的相互影响。SQ的五个维度中对SQ影响最显著的维度是响应性,最不显著的维度是有形性。     

基于Globe地图的雷达探测范围计算方法研究

研究了从Globe地图中任意抽取电波传播路径地形剖面的方法,并应用抛物方程模型计算了雷达波在任意地形上的传播损耗,在此基础上计算出单站雷达对特定目标高度的全方位探测范围,克服了目前几何光学法由于不能实现对复杂地形的准确建模而导致计算结果可靠度不高的缺点,为有效预测雷达探测的覆盖区和盲区提供了一条新途径.     

基于保幅延拓算子的共成像点道集敏感性分析

波动方程叠前深度偏移是解决复杂构造成像问题的有效手段。偏移速度分析和AVA/AVO分析都需要在共成像点道集完成,而共成像点道集对偏移速度的敏感性又直接决定了偏移速度分析的可行性,也影响到偏移速度迭代收敛的次数。利用双平方根保幅偏移算子,在波场延拓过程中抽取共成像点道集,保持了振幅的能量特征,有利于AVA/AVO分析。偏移距域和射线参数域共成像点道集对偏移速度较敏感,能够满足偏移速度分析的需要,两者联合应用有利于提高偏移速度分析的精度。     

安全区域内的最优投资决策问题

本文讨论了一类安全区域内的最优证券组合问题, 给出了投资者为了使自己的财富在尽可能短的时间内达到预定的目标财富所应采取的最优控制策略,并且针对具体的目标财富值及金融市场参数进行了数据分析,得出了为获得既定目标财富所需平均时间的最小值.     

Exact Simultaneous Confidence Bands for Quadratic and Cubic Polynomial Regression with Applications in Dose Response Study

Exact simultaneous confidence bands (SCBs) for a polynomial regression model are available only in some special situations. In this paper, simultaneous confidence levels for both hyperbolic and constant width bands for a polynomial function over a given interval are expressed as multidimensional integrals. The dimension of these integrals is equal to the degree of the polynomial. Hence the values can be calculated quickly and accurately via numerical quadrature provided that the degree of the polynomial is small (e.g. 2 or 3). This allows the construction of exact SCBs for quadratic and cubic regression functions over any given interval and for any given design matrix. Quadratic and cubic regressions are frequently used to characterise dose response relationships in addition to many other applications. Comparison between the hyperbolic and constant width bands under both the average width and minimum volume confidence set criteria shows that the constant width band can be much less efficient than the hyperbolic band. For hyperbolic bands, comparison between the exact critical constant and conservative or approximate critical constants indicates that the exact critical constant can be substantially smaller than the conservative or approximate critical constants. Numerical examples from a dose response study are used to illustrate the methods.     

Semiparametric Estimation with Profile Algorithm for Longitudinal Binary Data

This article considers analyzing longitudinal binary data semiparametrically and proposing GEE-Smoothing spline in the estimation of parametric and nonparametric components. The method is an extension of the parametric generalized estimating equation to semiparametric. The nonparametric component is estimated by smoothing spline approach, i.e., natural cubic spline. We use profile algorithm in the estimation of both parametric and nonparametric components. Properties of the estimators are evaluated by simulation.     

Quantile estimation for a selected normal population

In this paper simultaneous redescending M-estimates for scale and regression parameters are properly defined. The breakdown point of this estimates is derived. It is proved that these estimates are asynlptoticaliy normal and their cavariance matrix is obtained. These results show that simultaneous redescending M-estimates may combine high breakdown point and high asymptotic efficiency Under normal errors.     

Location and Scale Parameter Family of Distributions Attaining the Bhattacharyya Bound

It is well known that, under appropriate regularity conditions, the variance of an unbiased estimator of a real-valued function of an unknown parameter can coincide with the Cramér–Rao lower bound only if the family of distributions is a one-parameter exponential family. But it seems that the necessary conditions about the probability distribution for which there exists an unbiased estimator whose variance coincides with the Bhattacharyya lower bound are not completely known. The purpose of this paper is to specify the location, scale, and location-scale parameter family of distributions attaining the general order Bhattacharyya bound in certain class.     

A Fixed Point Approach to Solve the Average Cost Optimality Equation for Semi-Markov Decision Processes with Feller Transition Probabilities

Semi-Markov control processes with Feller (also known as weakly continuous) transition probabilities and unbounded cost functions are considered. We give sufficient conditions for the existence of a lower semicontinuous and continuous solutions to the average cost optimality equation. The proof is based on a fixed point argument.