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161.
刘清荣 《集美大学学报(哲学社会科学版)》2002,5(3):66-70
数字并不只限于计数方面 ,而是承载着许多的文化信息。通过对比研究揭示数字在中外不同文化中的象征意义 ,有助于从一个侧面了解中外文化之异同 相似文献
162.
Deli Li 《Revue canadienne de statistique》1996,24(3):279-292
Let {X, Xn; n ≥ 1} be a sequence of real-valued iid random variables, 0 < r < 2 and p > 0. Let D = { A = (ank; 1 ≤ k ≤ n, n ≥ 1); ank, ? R and supn, k |an,k| < ∞}. Set Sn( A ) = ∑nk=1an, kXk for A ? D and n ≥ 1. This paper is devoted to determining conditions whereby E{supn ≥ 1, |Sn( A )|/n1/r}p < ∞ or E{supn ≥ 2 |Sn( A )|/2n log n)1/2}p < ∞ for every A ? D. This generalizes some earlier results, including those of Burkholder (1962), Choi and Sung (1987), Davis (1971), Gut (1979), Klass (1974), Siegmund (1969) and Teicher (1971). 相似文献
163.
杨富强 《北华大学学报(社会科学版)》1996,(5)
本文引入数码列的G-S系数的概念,给出了一般数码列的G-S系数N_(k-1),单调数码列的G-S系数N_(K~2-1)等结果. 相似文献
164.
Peter Selman 《Journal of Population Research》2006,23(2):183-204
The implications of developments in intercountry adoption worldwide in the early years of the twenty-first century are explored,
based on analysis of data from 20 receiving countries. Between 1998 and 2004, intercountry adoption increased by 42 per cent.
Problems in data collection and analysis are examined, as is the reliability of estimates of numbers of children sent by countries
of origin when derived from data provided by receiving countries. Also considered are various measures of standardization
which can be used to facilitate comparison between countries and show trends over time. The potential for more detailed comparative
analysis is explored. 相似文献
165.
166.
Process capability indices are numerical tools that quantify how well a process can meet customer requirements, specifications or engineering tolerances. Fuzzy logic is incorporated to deal imprecise, incomplete data along with uncertainty. This paper develops two fuzzy methods for measuring the process capability in simple linear profiles for the circumstances in which lower and upper specification limits are imprecise. To guide practitioners, numerical example is provided. 相似文献
167.
Cheikh Tidiane Seck 《统计学通讯:理论与方法》2013,42(20):3697-3704
We consider in this note the weak convergence, in the frame of the empirical processes theory, of the nonweighted poverty measures viewed as stochastic processes defined on some space of bounded functions and indexed by real numbers or monotone functions. The results include the asymptotic behavior of the Foster–Greer–Thorbecke process of poverty indices. We use them to follow up the poverty evolution in poor countries between two periods with appropriate curves. 相似文献
168.
刘健 《苏州科技学院学报(社会科学版)》1998,(4)
应用 Wolstenholme 不等式的代数形式,建立了涉及三角形内部任一点的几个二次型不等式,提出了这类不等式的几个猜想。 相似文献
169.
We give new formula for moments of k-th record values in terms of Stirling numbers of the first kind. In particular, the formulae allow to derive the explicit formulae for moments of k-th lower record values from exponential distribution which have not been known yet. Moreover, some interesting identities involving harmonic numbers are also obtained as corollaries to presented results. 相似文献
170.
Marco Martini 《Statistical Methods and Applications》1992,1(3):359-376
Summary This paper describes an axiomatic approach to index number theory. A general bilaeral formula which generates a set of indices
of prices and quantities is proposed. This formula is written as a geometric mean, weighted with logarithmic means of relative
values, and includes all of those indices and related cofactors which satisfy the following axiomatic properties: strong identity,
commensurability, linear homogeneity and associativity (or monotonicity). Moreover, two subsets of indices are identified:
the first subset includes those which can be expressed either as geometric means or as expenditure ratios; the corresponding
bounds are given by the Laspeyres' and Paasche's indices. The second subset also satisfies the desired properties of base
and factor reversibility; in this case the bounds are given by Sato Vartia's and Fisher's indices. In addition it is shown
that the intersection between the two subsets identifies a new bilateral ideal index which satisfies the axiomatic and reversibility
properties (base and factor) and may also be written as an expenditure ratio. All other formulas, which do not belong to the
family of the proposed indices, violate some of the axiomatic properties. For multilateral comparisons, a mixed system of
direct and indirect indices which satisfies the transitivity condition is proposed. 相似文献