全文获取类型
收费全文 | 23092篇 |
免费 | 456篇 |
专业分类
财政金融 | 4565篇 |
工业经济 | 1862篇 |
计划管理 | 3801篇 |
经济学 | 4928篇 |
综合类 | 259篇 |
运输经济 | 168篇 |
旅游经济 | 422篇 |
贸易经济 | 3516篇 |
农业经济 | 992篇 |
经济概况 | 3025篇 |
信息产业经济 | 1篇 |
邮电经济 | 9篇 |
出版年
2021年 | 143篇 |
2020年 | 239篇 |
2019年 | 334篇 |
2018年 | 465篇 |
2017年 | 452篇 |
2016年 | 426篇 |
2015年 | 301篇 |
2014年 | 470篇 |
2013年 | 2466篇 |
2012年 | 654篇 |
2011年 | 680篇 |
2010年 | 644篇 |
2009年 | 731篇 |
2008年 | 645篇 |
2007年 | 534篇 |
2006年 | 523篇 |
2005年 | 437篇 |
2004年 | 461篇 |
2003年 | 453篇 |
2002年 | 455篇 |
2001年 | 441篇 |
2000年 | 458篇 |
1999年 | 427篇 |
1998年 | 413篇 |
1997年 | 422篇 |
1996年 | 382篇 |
1995年 | 339篇 |
1994年 | 336篇 |
1993年 | 395篇 |
1992年 | 385篇 |
1991年 | 394篇 |
1990年 | 330篇 |
1989年 | 315篇 |
1988年 | 298篇 |
1987年 | 287篇 |
1986年 | 318篇 |
1985年 | 435篇 |
1984年 | 396篇 |
1983年 | 412篇 |
1982年 | 345篇 |
1981年 | 335篇 |
1980年 | 369篇 |
1979年 | 319篇 |
1978年 | 259篇 |
1977年 | 270篇 |
1976年 | 237篇 |
1975年 | 219篇 |
1974年 | 196篇 |
1973年 | 179篇 |
1972年 | 136篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
112.
C. P. Harris 《The Economic record》1962,38(82):183-197
113.
Robert Wilson criticizes applied game theory's reliance on common-knowledge assumptions. In reaction to Wilson's critique, the recent literature of mechanism design has adopted the goal of finding detail-free mechanisms in order to eliminate this reliance. In practice this has meant restricting attention to simple mechanisms such as dominant-strategy mechanisms. However, there has been little theoretical foundation for this approach. In particular it is not clear the search for an optimal mechanism that does not rely on common-knowledge assumption would lead to simpler mechanisms rather than more complicated ones. This paper tries to fill the void. In the context of an expected revenue maximizing auctioneer, we investigate some foundations for using simple, dominant-strategy auctions. 相似文献
114.
Charles D. DeLorme Jr . David R. Kamerschen David C. Redman 《American journal of economics and sociology》1992,51(4):421-421
Abstract . Rent seeking involves the wasteful expenses incurred to secure, acquire, or maintain a monopoly position. Rent avoiding involves the expenditures undertaken to avoid the imposition of rent-seeking costs. Each represents a social cost of Tullock rectangle loss in addition to the dead-weight or Harberger triangle loss that combined to form the Harberger-Tullock trapezoid social cost. The first Food Stamp Program in the United States came about through the rent-seeking and/or rent-avoiding efforts of farmers, grocers, bankers, and other economic agents and did not lead to the promotion of social welfare. The evidence of these self-interested efforts was gleaned from articles in the New York Times and government documents. The first Food Stamp Program also fits the economic theory of regulation developed by Stigler, Jordan, Peltzman and others, and it involved imposed costs on economic agents as the program evolved. 相似文献
115.
B.F. Schriever 《Statistica Neerlandica》1987,41(2):99-109
For some non–parametric testing problems (one–sided two–sample problem, k –sample trend problem, testing independence against positive dependence) a partial ordering, denoted by ≥, over the alternatives is defined. This partial ordering expresses the strength of the deviation from the null–hypothesis. All familiar rank tests turn out to become more powerful under "increasing" alternatives; that is, all familiar rank statistics preserve the ordering stochastically in samples whenever it is present between underlying distributions. As a tool, the sample equivalence of ≥ is introduced as a partial ordering over pairs of permutations. Functions, defined on pairs of permutations, which preserve this ordering are studied. 相似文献
116.
We present general results for finding or boundingt
maxB
, the maximum number of arbitrary whole blocks of observations which can be removed from a block design, and still leave all of the elementary treatment contrasts estimable. The block sizes may be larger than the number of treatments. The results are applied to BBDs, reinforced BIBDs and BBDs, BTIBDs, and a series of variance balanced incomplete block designs with two block sizes. Also given for most of these designs, are results fort
max, the maximum number of arbitrary, scattered observations that can become unavailable, and still leave all of the elementary treatment contrasts estimable.The work was undertaken while Dr. Whittinghill was visiting Ohio State University, and supported by a grant from the Natural Sciences Division, Colby College, Waterville, Maine. 相似文献
117.
The problem of comparing the precisions of two instruments using repeated measurements can be cast as an extension of the Pitman-Morgan problem of testing equality of variances of a bivariate normal distribution. Hawkins (1981) decomposes the hypothesis of equal variances in this model into two subhypotheses for which simple tests exist. For the overall hypothesis he proposes to combine the tests of the subhypotheses using Fisher's method and empirically compares the component tests and their combination with the likelihood ratio test. In this paper an attempt is made to resolve some discrepancies and puzzling conclusions in Hawkins's study and to propose simple modifications.
The new tests are compared to the tests discussed by Hawkins and to each other both in terms of the finite sample power (estimated by Monte Carlo simulation) and theoretically in terms of asymptotic relative efficiencies. 相似文献
The new tests are compared to the tests discussed by Hawkins and to each other both in terms of the finite sample power (estimated by Monte Carlo simulation) and theoretically in terms of asymptotic relative efficiencies. 相似文献
118.
119.
120.