全文获取类型
收费全文 | 27653篇 |
免费 | 622篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 5787篇 |
工业经济 | 1988篇 |
计划管理 | 4472篇 |
经济学 | 6170篇 |
综合类 | 650篇 |
运输经济 | 138篇 |
旅游经济 | 415篇 |
贸易经济 | 3993篇 |
农业经济 | 1369篇 |
经济概况 | 3208篇 |
邮电经济 | 86篇 |
出版年
2020年 | 294篇 |
2019年 | 410篇 |
2018年 | 447篇 |
2017年 | 531篇 |
2016年 | 474篇 |
2015年 | 354篇 |
2014年 | 548篇 |
2013年 | 2658篇 |
2012年 | 685篇 |
2011年 | 785篇 |
2010年 | 680篇 |
2009年 | 739篇 |
2008年 | 723篇 |
2007年 | 667篇 |
2006年 | 568篇 |
2005年 | 530篇 |
2004年 | 511篇 |
2003年 | 573篇 |
2002年 | 552篇 |
2001年 | 574篇 |
2000年 | 639篇 |
1999年 | 507篇 |
1998年 | 537篇 |
1997年 | 542篇 |
1996年 | 490篇 |
1995年 | 499篇 |
1994年 | 517篇 |
1993年 | 539篇 |
1992年 | 554篇 |
1991年 | 545篇 |
1990年 | 463篇 |
1989年 | 368篇 |
1988年 | 368篇 |
1987年 | 347篇 |
1986年 | 387篇 |
1985年 | 540篇 |
1984年 | 574篇 |
1983年 | 495篇 |
1982年 | 511篇 |
1981年 | 546篇 |
1980年 | 476篇 |
1979年 | 487篇 |
1978年 | 415篇 |
1977年 | 349篇 |
1976年 | 326篇 |
1975年 | 304篇 |
1974年 | 266篇 |
1973年 | 262篇 |
1972年 | 192篇 |
1971年 | 151篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Jackie Carpenter Lea R. Dopson Nancy Kniatt 《Journal of Teaching in Travel & Tourism》2016,16(1):40-59
The purpose of this study was to develop a systematic process that other educational institutions and programs could follow to establish a consistent and accurate evaluation method for a capstone course. Hospitality industry professionals and hospitality management faculty were interviewed through focus-group discussions, and a post-focus-group survey was conducted to determine a weighted percentage for each of the nine determined content domains. A test blueprint for a hospitality management capstone course was developed to measure programmatic student learning outcomes based on the weighted domains determined through this study. The results provide a usable instrument for hospitality and tourism management programs to enhance their current assessment methodology. 相似文献
992.
993.
994.
This article looks into the ‘fine print’ of boosting for economic forecasting. By using German industrial production for the period from 1996 to 2014 and a data set consisting of 175 monthly indicators, we evaluate which indicators get selected by the boosting algorithm over time and four different forecasting horizons. It turns out that a number of hard indicators like turnovers, as well as a small number of survey results, get selected frequently by the algorithm and are therefore important to forecasting the performance of the German economy. However, there are indicators such as money supply that never get chosen by the boosting approach at all. 相似文献
995.
This paper explores the degree of interdisciplinarity of evolutionary approaches to the study of human behavior, and the implications that any such interdisciplinarity may have for the future of evolutionary psychology (EP) as a field of scholarship. To gauge the extent of interdisciplinarity of EP, the departmental affiliation of first-authors from 1000 journal articles evenly distributed across ten leading peer-reviewed psychology journals was assessed. Findings show that journals that are evolutionary-based have more first-authors from outside of psychology, and also include a wider variety of represented disciplines. These findings are discussed in terms of their influence on the future of EP, as a model for interdisciplinary research. EP's future will be successful if it continues to promote interdisciplinarity as well as recognize the epistemological worth of multiple evolutionary paradigms and frameworks. Evolutionary principles have been successfully applied to a broad range of topics, suggesting there is great utility in evolution serving as a common language for interdisciplinary pursuits within the behavioral and social sciences. As such, academic programs such as Evolutionary Studies (EvoS) programs, whose presence continues to increase across academic institutions worldwide, epitomize the future of successful interdisciplinary scholarly training. 相似文献
996.
This paper considers the relationship between the public equity market and the returns to venture investing using a dataset which is derived from the records of two large limited partners who have been investing in venture capital for almost 30 years. Evidence is found to suggest that market conditions over the investment cycle, and exit conditions at the time of exit in particular, are an important determinant. This paper also investigates whether any other aspects of the venture investment process respond to events in the broader market. While general trends are evident in the venture investment cycle, only the intensity of the investment process is found to respond to events in the public equity market. 相似文献
997.
Tomás Del Barrio Castro Denise R. Osborn 《Oxford bulletin of economics and statistics》2011,73(5):691-704
We analyze the asymptotic distributions associated with the seasonal unit root tests of Hylleberg et al. (1990) for quarterly data when the innovations follow a moving average process. Although both the t‐ and F‐type tests suffer from scale and shift effects compared with the presumed null distributions when a fixed order of autoregressive augmentation is applied, these effects disappear when the order of augmentation is sufficiently large. However, as found by Burridge and Taylor (2001) for the autoregressive case, individual t‐ratio tests at the semi‐annual frequency are not pivotal even with high orders of augmentation, although the corresponding joint F‐type statistic is pivotal. Monte Carlo simulations verify the importance of the order of augmentation for finite samples generated by seasonally integrated moving average processes. 相似文献
998.
Vasilios D. Kosteas 《The World Economy》2017,40(6):1089-1104
Merging industry‐level data on imports into the NLSY79 cohort data, we examine the relationship between rising imports and the amount of time workers in the US manufacturing sector spend in training events. A simple theoretical model shows the effect of foreign competition may depend on the type of training. Controlling for both industry and individual fixed effects, we find that rising imports lead workers to spend less time in training for the purpose of career advancement. There is some evidence this effect is stronger for less educated and lower ability workers. 相似文献
999.
D. Elliott Parris 《Futures》2011,43(6):602-606
Wendell Bell's idealistic vision of the role of the sociologist in creating a brighter future for society and his theoretical framework of the role of intellectual elites in the decisions of nationhood are examined through the personal lens of a former Caribbean student of the West Indies Study Program at UCLA. 相似文献
1000.
We characterize generalized disappointment aversion (GDA) risk preferences that can overweight lower‐tail outcomes relative to expected utility. We show in an endowment economy that recursive utility with GDA risk preferences generates effective risk aversion that is countercyclical. This feature comes from endogenous variation in the probability of disappointment in the representative agent's intertemporal consumption‐saving problem that underlies the asset pricing model. The variation in effective risk aversion produces a large equity premium and a risk‐free rate that is procyclical and has low volatility in an economy with a simple autoregressive endowment‐growth process. 相似文献