全文获取类型
收费全文 | 55645篇 |
免费 | 924篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 9748篇 |
工业经济 | 3427篇 |
计划管理 | 8730篇 |
经济学 | 12737篇 |
综合类 | 891篇 |
运输经济 | 354篇 |
旅游经济 | 687篇 |
贸易经济 | 10697篇 |
农业经济 | 2057篇 |
经济概况 | 6540篇 |
信息产业经济 | 45篇 |
邮电经济 | 657篇 |
出版年
2023年 | 263篇 |
2021年 | 313篇 |
2020年 | 552篇 |
2019年 | 807篇 |
2018年 | 3150篇 |
2017年 | 3001篇 |
2016年 | 2167篇 |
2015年 | 728篇 |
2014年 | 1123篇 |
2013年 | 4497篇 |
2012年 | 1730篇 |
2011年 | 3078篇 |
2010年 | 2832篇 |
2009年 | 2662篇 |
2008年 | 2541篇 |
2007年 | 2699篇 |
2006年 | 1026篇 |
2005年 | 1185篇 |
2004年 | 1239篇 |
2003年 | 1262篇 |
2002年 | 1038篇 |
2001年 | 755篇 |
2000年 | 774篇 |
1999年 | 670篇 |
1998年 | 649篇 |
1997年 | 603篇 |
1996年 | 623篇 |
1995年 | 532篇 |
1994年 | 555篇 |
1993年 | 583篇 |
1992年 | 608篇 |
1991年 | 593篇 |
1990年 | 516篇 |
1989年 | 478篇 |
1988年 | 412篇 |
1987年 | 436篇 |
1986年 | 469篇 |
1985年 | 691篇 |
1984年 | 653篇 |
1983年 | 584篇 |
1982年 | 573篇 |
1981年 | 529篇 |
1980年 | 560篇 |
1979年 | 491篇 |
1978年 | 424篇 |
1977年 | 394篇 |
1976年 | 331篇 |
1975年 | 371篇 |
1974年 | 299篇 |
1973年 | 291篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This paper examines the generalization of the regulated production function. It characterizes the set of admissible regulatory
constraints that are compatible with the existence of a regulated production function in a sufficiently weak framework to
encompass the usual rate-of-return constraints à la Averch and Johnson and value constraints. 相似文献
992.
Kurt A. Schwabe Peter W. Schuhmann Roy Boyd Khosrow Doroodian 《Environmental and Resource Economics》2001,19(2):131-147
Increasing deer populations can be controlled through manipulatingharvest limits or season length. While such actions often result in benefitsto hunters, both motorists and the agricultural sector also benefit as alower deer population leads to fewer incidences of harmful human-deerencounters. Traditional recreation demand models are often employed toexamine the welfare implications of changes in daily hunting bag limits.Studies measuring the effects of changes in season length, however, arenoticeably absent from the literature. This study uses a nested randomutility model to examine hunter choice over site and season selection toderive the values of changes in season length. 相似文献
993.
Barbara A. Oakley 《Environmental and Resource Economics》2001,19(4):411-413
Editorial Board
Acknowledgement of external reviewers for 2000 相似文献994.
Sarah Parlane 《Economic Theory》2001,17(3):619-639
This paper characterizes the optimal and efficient mechanisms to allocate simultaneously two substitute tasks to two suppliers.
Two main results emerge from this analysis. First, even under some regularity conditions efficiency and optimality do not
systematically coincide. Efficiency can always be achieved using some second price auctions which are optimal when both suppliers
compete for the same task. When there is competition for different tasks the optimal production is distorted from efficiency
over a nondegenerate interval of types so as to extract the full surplus over that interval. Second, full extraction of the
surplus may still guarantee incentive compatibility.
Received: November 2, 1998; revised version: March 2, 2000 相似文献
995.
Guilmette D Singer K Lundberg GD Callahan D Sefcik AE 《Medical economics》2001,78(13):89-90, 94-6, 99
996.
Kai A. Konrad 《European Economic Review》2002,46(8):1521-1537
In many situations the individuals who can generate some output must enter a contest for appropriating this output. This paper analyses the investment incentives of such agents and the role of incumbency advantages in the contest. Depending on the advantages, an increase in the productivity of the investment can decrease or increase the amount of investment. The results are applied to autocrats’ investment behavior and job specific investment in organizations. 相似文献
997.
Don Goldstein 《Journal of Evolutionary Economics》2002,12(5):495-524
Strategic Environmental Management (SEM) incorporates into firms' core strategies the transformation of products and processes
that they believe an environmentally concerned society will increasingly demand. Significant threads have to do with the discovery
of cost savings and market opportunities from reducing environmental impacts. SEM, like the environmental regulation hypothesis
associated with Michael Porter, implies that society's efforts to reduce external environmental costs often lead to identification
of hitherto-ignored or undeveloped profit possibilities. This would be surprising from the standpoint of neoclassical economic
theory, to the extent that SEM utilizes available information about the potential costs and benefits of projects. Within the
framework of evolutionary, capabilities-based theories of the firm, however, this discovery and its exploitation in SEM make
perfect sense. Capabilities theory would imply that firms' intrinsic path dependence may previously have obscured such opportunities.
This paper examines the theory of SEM, its implications for neoclassical and capabilities theories of the firm, and survey
results drawn from the author's work with member companies in a regional pollution prevention roundtable.
RID="*"
IDI have enjoyed the able and insightful research assistance of Justin Vernon. Cooperation from the companies that participated
in the survey, and financial support from Allegheny College and its Center for Economic and Environmental Development, are
gratefully acknowledged. Reviewers for this journal provided numerous, valuable suggestions. Responsibility for the material
herein remains mine alone. 相似文献
998.
Jonathan J. Velez Lori L. Moore Jacklyn A. Bruce Carrie A. Stephens 《Journal of Leadership Studies》2014,7(4):65-70
The article explores the past, present, and projected future of agricultural leadership education. Beginning with roots in youth leadership development and grounded in land‐grant universities, agricultural leadership education has undergone a shift from working primarily with rural youth to a new focus on also educating undergraduate and graduate students to empower community members and create change. The renewed focus has encouraged recent growth and in the last 10 years, the profession has added three leadership majors, six leadership minors, seven leadership focus areas, seven undergraduate leadership programs, and four graduate leadership programs. Research exploring the student impact of agricultural leadership education revealed that nationwide a total of 7,904 students are exposed to 208 agricultural leadership education courses. As the discipline continues to mature, recommendations are made for continued program development. Discussion highlights prior research examining potential courses to include types of experiences, program objectives, and career connectedness relating to agricultural leadership education. Programs have ample opportunity for future growth and recommendations are made to continue the development of innovative leadership opportunities and consistent pedagogical practices across institutions. 相似文献
999.
Yugu Xiao 《Quality and Quantity》2011,45(2):465-475
Home reversion plans allow homeowners to tap into the value of their house and live in it until their death. The article considers
a contract linking home reversion plan and long-term care insurance, which could better prepare seniors for their retirement
and long-term care needs. Here, we assume the product exposes an insurer to two risks: the uncertainty of nursing care cost
from disable, and the home value decreasing in real estate markets at the time of sale. Because the market is incomplete,
we apply the principle of equivalent utility to price the contract under exponential utility. 相似文献
1000.
William V. Gehrlein 《Quality and Quantity》2011,45(2):365-374
A Pairwise Majority Rule Winner (PMRW) exists for a voting situation if some candidate can defeat each of the remaining candidates
by Pairwise Majority Rule. The PMRW would be very appropriate for selection as the winner of an election, but it is well known
that such a candidate does not always exist. This paper concludes a series of studies regarding the probability that a PMRW
should be expected to exist in three-candidate elections, by introducing the notion of a strong measures of mutually coherent
group preferences. In order for voting situations to be reasonably expected to fail to have a PMRW in a three-candidate election,
voters’ preferences must be generated in an environment that is far removed from the situation in which there is a strong-overall-unifying
candidate. So far removed, that it is extremely unlikely that a PMRW will not exist in voting situations with large electorates
for a small number of candidates. 相似文献