全文获取类型
收费全文 | 956篇 |
免费 | 22篇 |
专业分类
财政金融 | 191篇 |
工业经济 | 72篇 |
计划管理 | 176篇 |
经济学 | 228篇 |
综合类 | 1篇 |
运输经济 | 4篇 |
旅游经济 | 11篇 |
贸易经济 | 184篇 |
农业经济 | 19篇 |
经济概况 | 71篇 |
邮电经济 | 21篇 |
出版年
2023年 | 8篇 |
2020年 | 14篇 |
2019年 | 18篇 |
2018年 | 25篇 |
2017年 | 14篇 |
2016年 | 27篇 |
2015年 | 19篇 |
2014年 | 21篇 |
2013年 | 83篇 |
2012年 | 27篇 |
2011年 | 31篇 |
2010年 | 36篇 |
2009年 | 39篇 |
2008年 | 43篇 |
2007年 | 19篇 |
2006年 | 16篇 |
2005年 | 24篇 |
2004年 | 25篇 |
2003年 | 23篇 |
2002年 | 25篇 |
2001年 | 14篇 |
2000年 | 24篇 |
1999年 | 16篇 |
1998年 | 16篇 |
1997年 | 11篇 |
1996年 | 14篇 |
1995年 | 16篇 |
1994年 | 10篇 |
1993年 | 17篇 |
1992年 | 8篇 |
1991年 | 9篇 |
1990年 | 13篇 |
1988年 | 11篇 |
1987年 | 8篇 |
1986年 | 8篇 |
1985年 | 23篇 |
1984年 | 15篇 |
1983年 | 16篇 |
1982年 | 13篇 |
1981年 | 18篇 |
1980年 | 12篇 |
1979年 | 7篇 |
1978年 | 10篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1975年 | 13篇 |
1974年 | 16篇 |
1973年 | 10篇 |
1970年 | 8篇 |
1967年 | 8篇 |
排序方式: 共有978条查询结果,搜索用时 15 毫秒
51.
Non-convex Technologies and Cost Functions: Definitions,Duality and Nonparametric Tests of Convexity 总被引:1,自引:0,他引:1
Walter?Briec Kristiaan?KerstensEmail author Philippe Venden?Eeckaut 《Journal of Economics》2004,81(2):155-192
This contribution is the first systematic attempt to develop a series of nonparametric, deterministic technologies and cost
functions without maintaining convexity. Specifically, we introduce returns to scale assumptions into an existing non-convex
technology and, dual to these technologies, define non-convex cost functions that are never lower than their convex counterparts.
Both non-convex technologies and cost functions (total, ray-average and marginal) are characterized by closed form expressions.
Furthermore, a local duality result is established between a local cost function and the input distance function. Finally,
nonparametric goodness-of-fit tests for convexity are developed as a first step towards making it a statistically testable
hypothesis.
An erratum to this article is available at . 相似文献
52.
Horst Brezinski Christiane Krieger Günter Ott Harald Hagemann Walter A. S. Koch Horst Brezinski Paulgeorg Juhl Thomas Eger Ulrich Fehl 《Review of World Economics》1982,118(2):381-405
Ohne Zusammenfassung 相似文献
53.
54.
Walter Wittmann 《Journal of Economics》1965,25(1-2):161-175
Ohne Zusammenfassung 相似文献
55.
Walter Kittel 《Intereconomics》1981,16(3):103-108
The image of the European Communities has lost some of its glamour as should be stated bluntly in any attempt to present a fair view of the state and prospects of the European Economic Community, the European Coal and Steel Community and the European Atomic Energy Community—the three communities which have sprung from the Treaties of Rome and Paris. As their organs have since been merged, they will here be designated “The Community”. Walter Kittel, the Deputy Permanent Representative of the Federal Republic of Germany with the Community, states in the following a personal view. 相似文献
56.
This paper analyzes explicit buy recommendations for stockspublished by German Personal Finance Magazines from 1995 to2003. These recommendations earn significant abnormal returnsof 2.58% within the five days around the publication day. Boththe price-pressure hypothesis and the information hypothesiscan be confirmed by our data. The price-pressure effect is mostevident for small stocks and glamour stocks. However, whereasthe initial price reaction to small stocks is additionally drivenby permanent information value, this does not hold true forglamour stocks. In contrast, value stocks are associated withhigh cumulative abnormal returns that are solely driven by informationvalue. 相似文献
57.
58.
59.
60.
Walter Rehberg Gerald Furian 《International journal of injury control and safety promotion》2013,20(2):65-74
Abstract Unintentional injuries ('accidents’) among elderly people are a significant burden in public health because such accidents happen frequently and because the proportion of older age groups in the population will continue to rise during the coming decades. One aim of this study, which was done in Vienna, the capital of Austria, was to broaden the preventive concept, adding lifestyle and living conditions to already well-known risk factors following the health promotion approach. Furthermore, characteristics that predispose older residents to accidents should be identified in order to design preventive measures for reducing injuries in this age group. 809 interviews with people 60 years of age and over were conducted, concerning accidents, outcomes of accidents, physical fitness, drug intake, type of house or dwelling, equipment in the household incorporating safety features, psychological well-being and social relations. The information collected was used to draw cross-sectional comparisons between participants who reported having experienced at least one accident in the previous 12 months and those who did not. Furthermore, the accident incidents were classified into 2 groups: incidents without injuries and injurious accidents. The latter served as a base for the epidemiology of injuries for people 60 years of age and over within the Vienna community. 20% of all senior citizens suffer at least one unintentional injury every year, in addition to which 8% experience critical incidents (mostly falls) without injury. Most accidents occur at home or involve pedestrians in public traffic areas. Over 90% of all accidents are falls, and 20% result in fractures. The most important risk factors for accidents in the elderly are gender, increasing age, poor physical fitness and low physical activity, the type of household and household equipment, poor psychological well-being, low income and loneliness. The findings regarding falls suggest some possible opportunities for reducing the risk of falls by improving buildings and dwellings of the elderly. A promising attempt at practical implementation of these findings is being conducted by the Vienna-based Austrian Institute for Home and Leisure Safety in cooperation with the Vienna City Council. These two organizations are implementing a long-term program that aims at mobilizing institutions and organizations involved in working with the elderly. 相似文献