全文获取类型
收费全文 | 15372篇 |
免费 | 322篇 |
专业分类
财政金融 | 2945篇 |
工业经济 | 1297篇 |
计划管理 | 2569篇 |
经济学 | 3252篇 |
综合类 | 159篇 |
运输经济 | 120篇 |
旅游经济 | 270篇 |
贸易经济 | 2287篇 |
农业经济 | 712篇 |
经济概况 | 2079篇 |
信息产业经济 | 1篇 |
邮电经济 | 3篇 |
出版年
2021年 | 106篇 |
2020年 | 170篇 |
2019年 | 223篇 |
2018年 | 328篇 |
2017年 | 309篇 |
2016年 | 292篇 |
2015年 | 201篇 |
2014年 | 337篇 |
2013年 | 1617篇 |
2012年 | 452篇 |
2011年 | 456篇 |
2010年 | 440篇 |
2009年 | 511篇 |
2008年 | 439篇 |
2007年 | 373篇 |
2006年 | 350篇 |
2005年 | 287篇 |
2004年 | 304篇 |
2003年 | 302篇 |
2002年 | 288篇 |
2001年 | 291篇 |
2000年 | 328篇 |
1999年 | 287篇 |
1998年 | 265篇 |
1997年 | 276篇 |
1996年 | 255篇 |
1995年 | 234篇 |
1994年 | 230篇 |
1993年 | 270篇 |
1992年 | 245篇 |
1991年 | 251篇 |
1990年 | 237篇 |
1989年 | 220篇 |
1988年 | 208篇 |
1987年 | 187篇 |
1986年 | 216篇 |
1985年 | 293篇 |
1984年 | 269篇 |
1983年 | 270篇 |
1982年 | 225篇 |
1981年 | 222篇 |
1980年 | 241篇 |
1979年 | 201篇 |
1978年 | 172篇 |
1977年 | 165篇 |
1976年 | 144篇 |
1975年 | 131篇 |
1974年 | 111篇 |
1973年 | 111篇 |
1972年 | 84篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
Clarence C. Morrison 《Atlantic Economic Journal》1995,23(3):189-202
This paper implements numerically a general equilibrium model in which all private producers are price makers and the government
utilizes tax revenues to provide a public good. After deriving the partial equilibrium condition for an excise tax to increase
price by more than the tax (for a monopoly firm), numerical examples are given, demonstrating this phenomenon for both partial
and general equilibrium. In the general equilibrium context, optimal excise taxation and optimal flat-rate income taxation
are compared. In the excise tax regime, prices increase by more than the taxes. In the income tax regime, prices actually
decline relative to the no-tax regime. In all of the examples given, flat-rate income taxation is superior to excise taxation
in terms of welfare.
The author has benefitted from exceptionally helpful comments received from J. Ronnie Davis, John D. Wilson, Ralph W. Pfouts,
and Amy Crews. He has also benefitted from conversations with Franz Gehrels, David E. Wildasin, Herbert J. Kiesling, and Harold
York. The usual disclaimer applies. 相似文献
12.
Search and Liquidity in Single-Family Housing 总被引:5,自引:0,他引:5
A two-stage least squares model of housing prices is estimated with data collected from 3358 single-family home transactions. The results provide evidence for an optimal marketing period and indicate that a liquidity premium is priced in single-family home sales. Consistent with the hypothesis derived from economic search models, the model shows higher selling prices for houses having longer expected marketing periods. The model also shows a price premium for houses that sell faster than expectations. This effect supports the concept that liquidity is a value-enhancing characteristic. 相似文献
13.
An examination of the ethical perceptions of business students using Macobby's head/heart traits and a comparison to earlier studies of managers, accountants, and business students is made. The data were collected at three universities that are similar in size, enrollment and degree programs within the College of Business. Results indicate that present day business students are no less ethically inclined than are their business counterparts in previous eras. In general head traits dominated over heart traits, an indication that business schools continued to do a good job emphasizing and developing analytical skills but a poor job of developing the qualities of the heart that are generally associated with ethical behavior. The implications of these findings are discussed. 相似文献
14.
Models for which the MLE and the conditional MLE coincide 总被引:1,自引:0,他引:1
The MLE, CMLE and MMLE coincide in a linear regression model with fixed individual effects. In this case, there is no incidental parameters problem and the MLE is consistent. The equivalence of these estimators is important because CMLE=MLE implies both the consistency of the MLE and the efficiency of the CMLE. In general, we cannot expect to find a CMLE or MMLE, since there may be no fixed-dimension sufficient statistic for the effects, nor an appropriate transformation of the data whose distribution does not depend on the effects. However, we show that the MLE, CMLE and MMLE do coincide in systems of seemingly unrelated regressions and in systems of simultaneous equations. We establish this result for systems in which (exogenous) variables in addition to (or other than) the intercept may have coefficients which vary over individuals, provided that the set of such variables is the same in every equation.The financial support of the National Science Foundation is gratefully acknowledged. 相似文献
15.
16.
Trade negotiations between Canada and the United States are to begin in the near future. For there to be an ongoing free movement of commodities the question of nontariff barriers must be addressed in the negotiations. Livestock commodities are particularly prone to nontariff barriers due to the public health aspects of domestic regulations and the perishability of the products. Potential nontariff barriers in livestock and meat products are identified and the problems of normal negotiation procedures outlined. A proposal for an arbitration mechanism for the settlement of disputes is developed. It's essential elements are pre-approval of changes to regulations, extremely short arbitration periods and decentralized adjudication.
Les négociations de commerce entre le Canada et les États-Unis commenceront bientôt. Pour avoir un mouvement continuel des denrées, la question des barrières nontarifaires doit être adressée dans les négotiations. Les denrées bestiaux sont particulièrement portées aux barrières nontarifaires à cause des aspects de la santé publique dans les régulations domestiques et la nature périssable des produits. On identifie les barrières nontarifaires potentielles en des produits bestiaux et de viande. On indique aussi les problèmes avec les processus de négotiation normale. Une proposition pour un mécanisme d'arbitrage pour la résolution des disputes est developpée. Les elements essentiels de cette proposition sont l'approbation en avance des changements aux régulations, les périodes d'arbitration très courtes et les prononcements de jugements décentralisés. 相似文献
Les négociations de commerce entre le Canada et les États-Unis commenceront bientôt. Pour avoir un mouvement continuel des denrées, la question des barrières nontarifaires doit être adressée dans les négotiations. Les denrées bestiaux sont particulièrement portées aux barrières nontarifaires à cause des aspects de la santé publique dans les régulations domestiques et la nature périssable des produits. On identifie les barrières nontarifaires potentielles en des produits bestiaux et de viande. On indique aussi les problèmes avec les processus de négotiation normale. Une proposition pour un mécanisme d'arbitrage pour la résolution des disputes est developpée. Les elements essentiels de cette proposition sont l'approbation en avance des changements aux régulations, les périodes d'arbitration très courtes et les prononcements de jugements décentralisés. 相似文献
17.
18.
C. A. Carter R. M. A. Loyns Z. F. Ahmadi-Esfahani 《Revue canadienne d'agroeconomie》1986,34(3):361-377
Canada's wheat grading system is largely based on visual criteria and it is based on relatively high quality standards. A strict varieties licensing system exists to maintain the integrity of the grade standards. One of the consequences of the licensing system is that higher yielding, lower or different quality wheats have not been grown in Canada until recently. The basic objective of this paper is to examine some of the consequences of the regulatory strategy of limiting wheat production to the traditional high quality wheats. This question is analyzed in the context of important changes in the international grain markets. Using a partial equilibrium trade model this paper estimates that if higher yielding wheats were permitted to be grown, annual producer gains would be 5 to 17 percent of current net farm income.
Le classement des blés au Canada est basé sur des critères visuels qui sont de hautes qualités. Le système actuel d'homologation des variétés est tel que l'intégrité de ce système est maintenue. En conséquent, ce système n'a pas encouragé la cultivation des blés de hauts rendements ou des varietés différentes que tout récemment. L'objectif principal de cette étude est d'examiner quelques unes des conséquences de la stratégic de la réglementation visant à limiter la production du blé aux variétés de hautes qualités. Cette question est adressée dans le contexte des changements importants qui ont eu lieu dans le marché international des grains. A l'aide d'un modèle d'équilibre partiel des échanges, la présente étude démontre gu'en permettant la production des blés de hauts rendements, le gain annuel aux producteurs serait de 5 à 17 pourcent du revenue agricole net. 相似文献
Le classement des blés au Canada est basé sur des critères visuels qui sont de hautes qualités. Le système actuel d'homologation des variétés est tel que l'intégrité de ce système est maintenue. En conséquent, ce système n'a pas encouragé la cultivation des blés de hauts rendements ou des varietés différentes que tout récemment. L'objectif principal de cette étude est d'examiner quelques unes des conséquences de la stratégic de la réglementation visant à limiter la production du blé aux variétés de hautes qualités. Cette question est adressée dans le contexte des changements importants qui ont eu lieu dans le marché international des grains. A l'aide d'un modèle d'équilibre partiel des échanges, la présente étude démontre gu'en permettant la production des blés de hauts rendements, le gain annuel aux producteurs serait de 5 à 17 pourcent du revenue agricole net. 相似文献
19.
Vulnerability and industrial hazards in industrializing countries: an integrative approach 总被引:1,自引:0,他引:1
The extra vulnerability of industrializing countries to environmental problems and industrial accidents cannot be understood or solved by a ‘normal’ scientific analysis. Aspects of the social and institutional context must be included, through analyses based on post-normal science. The standard two-dimensional classification of PNS is modified to have axes ‘social ‘and institutional vulnerabilities’ and ‘complexity of technological hazards’. The analysis is mainly applied to the case of the relatively rare accidents with catastrophic potential. In these, the deaths per accident in India, Mexico and Brazil are much greater than in the industrialized countries. This discrepancy arises partly from location of such plants near residential communities for marginalized workers and their families. Other socio-political factors are relevant, as the role of these countries in the global production system, the enforcement of safety and planning laws, quality of housing, and lifestyle of residents. Reducing the vulnerability of industrializing countries will therefore require major social policies and a comprehension of the limits of the normal scientific and economic approaches to such problems. 相似文献
20.
Much of the discussion about banking and commerce in America has failed to make several crucial distinctions and has not accounted for many arrangements that have promoted the mixing of these activities. We investigate the history of banking and commerce in the United States, looking both at bank control of commercial firms and commercial firms' control of banks. We trace how these controls have changed with shifting definitions of "bank" and changing methods of "control." Despite the regulations prohibiting some arrangements that promote financial control, we find evidence of extensive linkages between banking and commerce in the United States. These linkages usually build on devices that are very close substitutes to the arrangements prohibited by law. Altogether, our findings question the often made claim that traditionally banking in the United States has been separated from commerce. Furthermore, given that research on Japan and Germany has shown that the mixing of banking and commerce matters for a variety of issues, our evidence also raises some questions on similar research in the United States which makes the simplifying assumption that these industries are separated. 相似文献