全文获取类型
收费全文 | 12428篇 |
免费 | 448篇 |
专业分类
财政金融 | 2562篇 |
工业经济 | 1212篇 |
计划管理 | 2222篇 |
经济学 | 2584篇 |
综合类 | 112篇 |
运输经济 | 174篇 |
旅游经济 | 308篇 |
贸易经济 | 2072篇 |
农业经济 | 658篇 |
经济概况 | 966篇 |
信息产业经济 | 1篇 |
邮电经济 | 5篇 |
出版年
2023年 | 71篇 |
2021年 | 91篇 |
2020年 | 202篇 |
2019年 | 293篇 |
2018年 | 304篇 |
2017年 | 319篇 |
2016年 | 285篇 |
2015年 | 223篇 |
2014年 | 329篇 |
2013年 | 1492篇 |
2012年 | 403篇 |
2011年 | 433篇 |
2010年 | 392篇 |
2009年 | 490篇 |
2008年 | 486篇 |
2007年 | 413篇 |
2006年 | 420篇 |
2005年 | 373篇 |
2004年 | 354篇 |
2003年 | 380篇 |
2002年 | 334篇 |
2001年 | 296篇 |
2000年 | 293篇 |
1999年 | 288篇 |
1998年 | 260篇 |
1997年 | 261篇 |
1996年 | 212篇 |
1995年 | 212篇 |
1994年 | 196篇 |
1993年 | 180篇 |
1992年 | 164篇 |
1991年 | 166篇 |
1990年 | 137篇 |
1989年 | 129篇 |
1988年 | 123篇 |
1987年 | 130篇 |
1986年 | 95篇 |
1985年 | 164篇 |
1984年 | 182篇 |
1983年 | 179篇 |
1982年 | 147篇 |
1981年 | 116篇 |
1980年 | 127篇 |
1979年 | 107篇 |
1978年 | 91篇 |
1977年 | 84篇 |
1976年 | 75篇 |
1975年 | 44篇 |
1974年 | 67篇 |
1973年 | 60篇 |
排序方式: 共有10000条查询结果,搜索用时 265 毫秒
81.
The purpose of this research was to investigate the effects that user task load level has on the relationship between an individual's trust in and subsequent use of a system's automation. Military decision-makers trust and use information system automation to make many tactical judgments and decisions. In situations of information uncertainty (information warfare environments), decision-makers must remain aware of information reliability issues and temperate their use of system automation if necessary. An individual's task load may have an effect on his use of a system's automation in environments of information uncertainty.It was hypothesized that user task load will have a moderating effect on the positive relationship between system automation trust and use of system automation. Specifically, in situations of information uncertainty (low trust), high task load will have a negative effect on the relationship. To test this hypothesis, an experiment in a simulated command and control micro-world was conducted in which system automation trust and individual task load were manipulated. The findings from the experiment support the positive relationship between automation trust and automation use found in previous research and suggest that task load does have a negative effect on the positive relationship between automation trust and automation use. Experiment participant who incurred a higher task load exhibited an over-reliance on their automated information systems to assist them in their decision-making activities. Such an over-reliance can lead to vulnerabilities of deception and suggests the need for automated deception detection capabilities. 相似文献
82.
83.
84.
Richard Nehring Charles Barnard David Banker Vince Breneman 《American journal of agricultural economics》2006,88(4):930-946
This article determines the relative technical efficiency of rural- and urban-influenced crop/livestock enterprises in the Corn Belt. Farmers in urban-influenced locations are less technically efficient than farmers in rural locations. During 1998–2000, stochastic production frontier procedures indicate that a 10% increase in urban influence leads to a close to 4% decrease in technical efficiency. The most successful urban-influenced farms have controlled costs as effectively as rural farms. They have tended to de-emphasize that nondairy livestock activities—particularly beef and hogs—do not rely extensively on off-farm income, and have relatively large, less residential/lifestyle operations compared to less successful urban-influenced farmers. However, our statistical analysis clearly bears out the refrain in popular literature that urban proximity raises the cost for, and decreases the viability of, traditional farms. 相似文献
85.
We use line integral theory to lay out in a more general theoretical framework the conditions under which it is possible to measure with market data the welfare effects of a change in a nonmarket good. We present in detail a numerical method of measuring the value of nonmarket goods using market data, under either weak neutrality or weak complementarity. Our numerical method is more flexible than the existing analytical method because it can be used with any well-behaved Marshallian demand function, and can be used even when the willig condition does not hold. 相似文献
86.
Noreen Heraty David G. Collings 《International Journal of Training and Development》2006,10(2):164-174
This paper explores the landscape of training and development in the Republic of Ireland, a country with an impressive economic record in recent years. Both the Irish economic context and business context are explored. The national system for training and development and the surrounding policy and strategy context are set down. Survey data are drawn upon to examine the nature of training and development at organizational level. Here influence on training and development, levels of expenditure, the number of days per employee category and the dominant methods employed training and development are all discussed. Finally the academic study of training and development in the Republic of Ireland is examined. 相似文献
87.
A number of bargaining experiments have raised the of what is fair or just may be sufficiently powerful to generate bel and systematically from the predictions of standard bargaining experiment designed to test whether the relative impact of different certain changes in the bargaining environment. 相似文献
88.
89.
90.