全文获取类型
收费全文 | 26515篇 |
免费 | 514篇 |
专业分类
财政金融 | 5020篇 |
工业经济 | 2222篇 |
计划管理 | 4273篇 |
经济学 | 5694篇 |
综合类 | 317篇 |
运输经济 | 187篇 |
旅游经济 | 407篇 |
贸易经济 | 3960篇 |
农业经济 | 1335篇 |
经济概况 | 3596篇 |
信息产业经济 | 3篇 |
邮电经济 | 15篇 |
出版年
2020年 | 272篇 |
2019年 | 355篇 |
2018年 | 486篇 |
2017年 | 483篇 |
2016年 | 450篇 |
2015年 | 315篇 |
2014年 | 483篇 |
2013年 | 2631篇 |
2012年 | 683篇 |
2011年 | 741篇 |
2010年 | 693篇 |
2009年 | 818篇 |
2008年 | 714篇 |
2007年 | 598篇 |
2006年 | 565篇 |
2005年 | 543篇 |
2004年 | 508篇 |
2003年 | 536篇 |
2002年 | 470篇 |
2001年 | 503篇 |
2000年 | 543篇 |
1999年 | 506篇 |
1998年 | 474篇 |
1997年 | 489篇 |
1996年 | 490篇 |
1995年 | 445篇 |
1994年 | 438篇 |
1993年 | 441篇 |
1992年 | 440篇 |
1991年 | 455篇 |
1990年 | 420篇 |
1989年 | 362篇 |
1988年 | 356篇 |
1987年 | 305篇 |
1986年 | 383篇 |
1985年 | 525篇 |
1984年 | 498篇 |
1983年 | 491篇 |
1982年 | 425篇 |
1981年 | 430篇 |
1980年 | 415篇 |
1979年 | 405篇 |
1978年 | 343篇 |
1977年 | 314篇 |
1976年 | 269篇 |
1975年 | 251篇 |
1974年 | 231篇 |
1973年 | 199篇 |
1972年 | 181篇 |
1971年 | 163篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
The present survey was voluntarily and anonymously completed by 2,196 students enrolled in business courses at the University of Southern Mississippi. The intent of the survey was to determine whether or not age or gender played a role in a person's perception of proper ethical conduct.The findings suggests that gender is a significant factor in the determination of ethical conduct and that females are more ethical than males in their perception of business ethical situations.Students were divided into groups according to age as follows: under 21 years, 22–30 years, 31–40 years, and 40 plus years. The results of this survey also suggest that age is a determining factor in making ethical decisions. The statistics suggest that those students falling in the 40 plus years age group were the most ethical, followed in order by the 31–40 group, the 22–30 group and those of 21 years of age and under.Durwood Ruegger is currently an Associate Professor of Finance and General Business at the University of Southern Mississippi. Prior to joining the University, he was a practicing attorney and former municipal judge. His publications have appeared in theJournal of Health and Human Resources Administration, Labor Law Journal, Business Insights, andThe Practical Real Estate Lawyer.Ernest W. King is an Assistant Professor of Finance and General Business at the University of Southern Mississippi. He is a member of the Florida and Washington, D.C. Bars. His publications have appeared inBusiness Insights, Nursing Administration Quarterly, and theCPCU Journal. 相似文献
22.
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
23.
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
24.
25.
26.
27.
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
28.
29.
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
30.
Clive W. J. Granger 《Oxford bulletin of economics and statistics》2003,65(Z1):689-701
The paper asks the question – as time series analysis moves from consideration of conditional mean values and variances to unconditional distributions, do some of the familiar concepts devised for the first two moments continue to be helpful in the more general area? Most seem to generalize fairly easy, such as the concepts of breaks, seasonality, trends and regime switching. Forecasting is more difficult, as forecasts become distributions, as do forecast errors. Persistence can be defined and also common factors by using the idea of a copula. Aggregation is more difficult but causality and controllability can be defined. The study of the time series of quantiles becomes more relevant. 相似文献