全文获取类型
收费全文 | 17961篇 |
免费 | 29篇 |
专业分类
财政金融 | 2815篇 |
工业经济 | 844篇 |
计划管理 | 2818篇 |
经济学 | 4132篇 |
综合类 | 484篇 |
运输经济 | 8篇 |
旅游经济 | 6篇 |
贸易经济 | 4720篇 |
农业经济 | 51篇 |
经济概况 | 1470篇 |
信息产业经济 | 44篇 |
邮电经济 | 598篇 |
出版年
2021年 | 11篇 |
2020年 | 18篇 |
2019年 | 20篇 |
2018年 | 2317篇 |
2017年 | 2069篇 |
2016年 | 1230篇 |
2015年 | 100篇 |
2014年 | 122篇 |
2013年 | 215篇 |
2012年 | 467篇 |
2011年 | 1984篇 |
2010年 | 1852篇 |
2009年 | 1562篇 |
2008年 | 1544篇 |
2007年 | 1901篇 |
2006年 | 99篇 |
2005年 | 413篇 |
2004年 | 501篇 |
2003年 | 592篇 |
2002年 | 292篇 |
2001年 | 85篇 |
2000年 | 70篇 |
1999年 | 23篇 |
1998年 | 37篇 |
1997年 | 21篇 |
1996年 | 41篇 |
1995年 | 12篇 |
1994年 | 10篇 |
1993年 | 17篇 |
1992年 | 13篇 |
1990年 | 9篇 |
1989年 | 10篇 |
1988年 | 14篇 |
1987年 | 14篇 |
1986年 | 34篇 |
1985年 | 25篇 |
1984年 | 22篇 |
1983年 | 15篇 |
1982年 | 10篇 |
1981年 | 10篇 |
1980年 | 11篇 |
1978年 | 13篇 |
1977年 | 9篇 |
1976年 | 8篇 |
1975年 | 12篇 |
1974年 | 9篇 |
1973年 | 10篇 |
1972年 | 15篇 |
1970年 | 8篇 |
1969年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
We study the local turnpike property for two classes of infinite-horizon discrete-time deterministic maximization problems
which have common applications, e.g., optimal growth theory. We follow a functional-analytic approach and rely on an implicit
function theorem for the space of the sequences which converge to zero. We shall assume the existence of an optimal path which
is not necessarily a steady-state. Relying on material developped in Blot and Crettez (Decis Econo Finance 27:1–34, 2004),
“On the smoothness of optimal paths” Decis Econ Finance, 21:1–34, 2004), we provide conditions under which a variation in
the initial conditions (i.e., capital stock and discount rate) yields an optimal solution which converges toward a reference
solution when time becomes infinite. We also provide new results on bounded solutions of difference equations.
We gratefully thank the editor, Silvano Holzer, and two anonymous referees for remarks and advices on a previous version of
this paper. 相似文献
112.
In this paper, progressive stress accelerated life tests are considered when the lifetime of a product under use condition
follows a finite mixture of distributions. The experiment is performed when each of the components in the mixture follows
a general class of distributions which includes, among others, the Weibull, compound Weibull, power function, Gompertz and
compound Gompertz distributions. It is assumed that the scale parameter of each component satisfies the inverse power low,
the progressive stress is directly proportional to time and the cumulative exposure model for the effect of changing stress
holds. Based on type-I censoring, the maximum likelihood estimates (MLEs) of the parameters under consideration are obtained.
A special attention is paid to a mixture of two Rayleigh components. Simulation results are carried out to study the precision
of the MLEs and to obtain confidence intervals for the parameters involved. 相似文献
113.
Die Notwendigkeit zur wertorientierten Führung und Steuerung von Unternehmungen gewinnt durch die zunehmende Professionalisierung
der Kapitalmarktteilnehmer, die Basel-II-Richtlinien für Banken sowie die Neuregelung zum Goodwill Impairment weiter an Dynamik.
Innerhalb der Wertkonzepte nehmen Kapitalkosten als zentraler „value driver“ eine herausragende Bedeutung ein. Vor diesem
Hintergrund werden die unterschiedlichen Verfahren zur Ermittlung von Kapitalkosten, darunter auch das erst kürzlich vorgestellte
Market-derived Capital Pricing Model, diskutiert und mittels eines zu entwickelnden Kriterienrasters systematisch miteinander
verglichen. Schlie?lich entwickelt der Beitrag aus den Erkenntnissen des Verfahrensvergleichs sowie einer Expertenbefragung
praktische Anwendungsempfehlungen. 相似文献
114.
In this paper characterizations of negative multinomial distributions based on conditional distributions have been studied. 相似文献
115.
We characterize the equilibrium of the all-pay auction with general convex cost of effort and sequential effort choices. We
consider a set of n players who are arbitrarily partitioned into a group of players who choose their efforts ‘early’ and a group of players who
choose ‘late’. Only the player with the lowest cost of effort has a positive payoff in any equilibrium. This payoff depends
on his own timing vis-a-vis the timing of others. We also show that the choice of timing can be endogenized, in which case
the strongest player typically chooses ‘late’, whereas all other players are indifferent with respect to their choice of timing.
In the most prominent equilibrium the player with the lowest cost of effort wins the auction at zero aggregate cost.
We thank Dan Kovenock and Luis C. Corchón for discussion and helpful comments. The usual caveat applies. Wolfgang Leininger
likes to express his gratitude to Wissenschaftszentrum Berlin (WZB) for its generous hospitality and financial support. 相似文献
116.
This empirical note extends the recent work by Holmes (2006) in examining the long-run relationship between private and public
savings in the U.S. over the post-World War II period. Standard Engle-Granger cointegration tests fail to reject the null
hypothesis of no cointegration; however, once allowance is made for an endogenous break in the cointegrating relationship,
the weak form of the Ricardian equivalence proposition is supported. 相似文献
117.
Sophie Manigart Veroniek Collewaert Mike Wright Sarika Pruthi Andy Lockett Hans Bruining Ulrich Hommel Hans Landstrom 《The International Entrepreneurship and Management Journal》2007,3(1):109-125
We examine the neglected area of internationalisation by VCs. Using a representative sample of 195 VCs, we show that the decision
of a European VC firm to invest internationally is driven by its human resources. Having more VC executives in general and
more VC executives with previous international experience in specific, results in a higher probability of investing internationally.
In contrast, more VC executives with experience in the VC industry or with an engineering background lead to a higher probability
of remaining domestic. 相似文献
118.
The literature on US state government fiscal performance has examined the role of institutional factors such as budget rules
and divided government, but has largely ignored the impact of party alternation. This paper primarily focuses on whether party
alternation in the governor’s office affects fiscal performance. Our hypothesis is that frequent party changes create a political
environment that impacts fiscal performance. To further assess the impact of party alternation on fiscal performance, we consider
our primary hypothesis in conjunction with the degree of division that exists between the governor’s office and the legislature.
Using panel data from 37 states between 1971 and 2000 we test the hypothesis that frequent party alternation can be expected
to affect fiscal performance and find strong support for the hypothesis.
An earlier version of this paper was presented at the 2005 Public Choice Society Meetings. The authors would like to thank
the conference participants, William Shughart, Charles Register, Jocelyn Evans, John D. Jackson, Amihai Glazer, and two anonymous
referees for their comments. We would also like to thank Craig R. Stiller for his help in the collection of data. Any remaining
errors remain the responsibility of the authors. 相似文献
119.
This paper has three goals. First, we demonstrate that standard arguments and methods from production and duality analysis
can be used to provide a comprehensive and general treatment of the value of information for a risk-averse firm with expected-utility
(linear-in-probabilities) preferences and a general stochastic technology. Second, we place bounds on the value of information
for a risk-averse firm and relate these bounds to characteristics of the technology and the producer’s preferences. The third
and final goal is to derive the implications that information differences can have for measured efficiency differences and
to relate the bounds on the value of information to those measured differences.
相似文献
120.
J. Castellano-Paulis A. Hernández-Mendo Verónica Morales-Sánchez M. T. Anguera-Argilaga 《Quality and Quantity》2007,41(1):93-104
We present a probabilistic model based on the one developed by Hernández Mendo and Anguera (Revista de Psicologíca Social,
16(1), 71–93, 2001). Here we have tried to break down the interaction contexts that the opposing teams are able to generate
and transform during the game. We are aware that a given player or team does not produce consistent behaviour in similar situations.
However, a degree of uncertainty is assumed to exist regarding whether the results obtained are a specific function of the
analysis used. In order to carry out this research a category system which optimized that used in the previous model was developed.
This system should enable the interaction between teams to be observed within the actual play of a soccer game. A lag sequential
analysis was performed on the basis of a coding of the behavioural flow. After describing the behavioural patterns obtained
a probabilistic model of the development of play in soccer is proposed. 相似文献