全文获取类型
收费全文 | 1320篇 |
免费 | 42篇 |
国内免费 | 5篇 |
专业分类
管理学 | 96篇 |
民族学 | 3篇 |
人才学 | 1篇 |
人口学 | 28篇 |
丛书文集 | 281篇 |
理论方法论 | 22篇 |
综合类 | 674篇 |
社会学 | 13篇 |
统计学 | 249篇 |
出版年
2023年 | 5篇 |
2022年 | 8篇 |
2021年 | 4篇 |
2020年 | 40篇 |
2019年 | 13篇 |
2018年 | 15篇 |
2017年 | 29篇 |
2016年 | 15篇 |
2015年 | 25篇 |
2014年 | 163篇 |
2013年 | 237篇 |
2012年 | 79篇 |
2011年 | 43篇 |
2010年 | 54篇 |
2009年 | 45篇 |
2008年 | 48篇 |
2007年 | 49篇 |
2006年 | 54篇 |
2005年 | 49篇 |
2004年 | 50篇 |
2003年 | 45篇 |
2002年 | 69篇 |
2001年 | 40篇 |
2000年 | 23篇 |
1999年 | 27篇 |
1998年 | 10篇 |
1997年 | 19篇 |
1996年 | 18篇 |
1995年 | 31篇 |
1994年 | 16篇 |
1993年 | 12篇 |
1992年 | 15篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 3篇 |
1988年 | 3篇 |
1984年 | 3篇 |
排序方式: 共有1367条查询结果,搜索用时 15 毫秒
71.
The performance of step-wise group screening In terms of the expected number of runs and the expected number of incorrect decisions, Is considered. A method for obtaining optimal step-wise designs Is presented, for the cases in which the direction of each defective factor is assumed to be known a-priori and the observations are subject to error. 相似文献
72.
Edwin L. Crow 《统计学通讯:模拟与计算》2013,42(3):749-769
The ranking of paired contestants (players) after a series of contests is difficult when every player does not play every other player. In the 1975 JASA Mark Thompson presented a maximum likelihood solution based on the assumption that the probability of any one player defeating any other is a function only of the difference in their ranks. Here the linear approximation to that likelihood is shown to lead to a nonparametric measure of the efficacy of the ranking, called the net difference in ranks (NDR) , which is the sum of the differences in ranks of the paired players in the observed contests that agree with the ranking minus the sum of the differences in ranks in the observed contests that disagree with the ranking (upsets) . The subject is part of a large literature that has been consolidated by H.A. David in The Method of Paired Comparisons (1963, 1988). The method was introduced by the psychophysicist Fechner in 1860 and has been widely applied to sensory testing, 相似文献
73.
Lot resubmissions are allowed in situations where the original inspection results are suspected or when the supplier is allowed to opt for resampling as per the provisions of the contract etc. This paper examines the situation of resampling of lots and derives the performance measures of a resampling scheme having a single sampling plan for inspection. The usefulness and limitations of resampling of resubmitted lots are also discussed 相似文献
74.
75.
孙玉冰 《青海民族学院学报(社会科学版)》2010,36(1):93-95,103
数字作为一种语言符号,通常用于记录、计算,然而置之于中国传统文化中,其所蕴涵的意义便超"凡"入"圣"。古人视其为"先天地而己存,后天地而己立",从而建构了一系列相关的文化语汇。透过数字本身来观察这一独特的文化现象,它所折射与反映的不仅是先民的宇宙意识,而且作为一种集体潜意识的约定俗成,它又成为华夏民族根文化的组成部分。 相似文献
76.
Lattice paths are enumerated as walks on a lattice under the Delannoy criterion of vertical, horizontal and upward diagonal steps. Delannoy recursions are generalized for arbitrary weights in each of these directions, where the row elements of the Delannoy triangles correspond to lattice paths for all walks at a given length. 相似文献
77.
Joseph M. Hilbe 《The American statistician》2013,67(3):255-265
The importance of random number generators has increased over the years. This follows from the fact that contemporary research methods rely more and more on simulation and the increased importance of encryption technology. The output of a random number generator is created by either an algorithm or a physical device. The most popular method for random number generation is through the use of an algorithm. This article presents a new category of physical random bit generator that is packaged by several manufacturers. A statistical analysis of the output from the generators is given. 相似文献
78.
Ulrich Gehmann 《Culture and Organization》2013,19(2):105-119
This article outlines some basic characteristics of modern myths that fundamentally differ from the traditional myths on which most myth research is based, namely: their relation to time, and their relation to themselves. The article also takes a closer look at the implications these differences have for our present state of Being. The aim is not to offer yet another variation on the academic discussion of myths, but rather to provide a starting point for further discussion about the peculiarities and impacts pertaining to modern myths. 相似文献
79.
基于区间数大小不能直接判定的灰矩阵博弈的策略优超及其最优解研究 总被引:4,自引:0,他引:4
对于区间灰数大小不能直接判定的灰矩阵博弈G(⊗)={S1,S2,A(⊗)}问题,其策略优超和纯策略求解问题的关键在于A(⊗)中区间灰数大小判定准则的设定与判定方法的设计。本文运用灰色系统思想和系统工程的理论,揭示了人们在灰信息条件下的博弈心理与博弈决策规则,根据区间灰数势关系的判定规则,提出了灰数势意义下的策略优超法则,定义了纯策略解。最后,以商业银行贷款动态损失准备金计提为案例,对其灰势意义下的策略优超和纯策略解问题进行了研究。 相似文献
80.
刘瑞金 《山东理工大学学报(社会科学版)》1994,(2)
本文借助自由粒子的量子能态分布理论,利用3n维空间球体模型,实现了对理想气体(N,V,E)系统微态数的计算,在此基础上,给出了理想气体热力学量的统计结果。 相似文献