全文获取类型
收费全文 | 74103篇 |
免费 | 1445篇 |
国内免费 | 2篇 |
专业分类
财政金融 | 13377篇 |
工业经济 | 4959篇 |
计划管理 | 11938篇 |
经济学 | 16758篇 |
综合类 | 1085篇 |
运输经济 | 384篇 |
旅游经济 | 976篇 |
贸易经济 | 13560篇 |
农业经济 | 2715篇 |
经济概况 | 8954篇 |
信息产业经济 | 45篇 |
邮电经济 | 799篇 |
出版年
2021年 | 374篇 |
2020年 | 633篇 |
2019年 | 904篇 |
2018年 | 3274篇 |
2017年 | 3088篇 |
2016年 | 2329篇 |
2015年 | 905篇 |
2014年 | 1408篇 |
2013年 | 6015篇 |
2012年 | 2107篇 |
2011年 | 3575篇 |
2010年 | 3215篇 |
2009年 | 3144篇 |
2008年 | 3124篇 |
2007年 | 3228篇 |
2006年 | 1478篇 |
2005年 | 1616篇 |
2004年 | 1709篇 |
2003年 | 1745篇 |
2002年 | 1449篇 |
2001年 | 1236篇 |
2000年 | 1229篇 |
1999年 | 1045篇 |
1998年 | 1034篇 |
1997年 | 1027篇 |
1996年 | 1023篇 |
1995年 | 903篇 |
1994年 | 943篇 |
1993年 | 982篇 |
1992年 | 979篇 |
1991年 | 989篇 |
1990年 | 858篇 |
1989年 | 757篇 |
1988年 | 721篇 |
1987年 | 722篇 |
1986年 | 769篇 |
1985年 | 1101篇 |
1984年 | 1034篇 |
1983年 | 1005篇 |
1982年 | 915篇 |
1981年 | 860篇 |
1980年 | 880篇 |
1979年 | 840篇 |
1978年 | 710篇 |
1977年 | 647篇 |
1976年 | 542篇 |
1975年 | 541篇 |
1974年 | 484篇 |
1973年 | 451篇 |
1972年 | 343篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
A growing literature finds evidence that flood risk salience varies over time, spiking directly following a flood and then falling off individuals' cognitive radar in the following years. In this article, we provide new evidence of salience exploiting a hurricane cluster impacting Florida that was preceded and followed by periods of unusual calm. Utilizing residential property sales across the state from 2002 through 2012, our main estimate finds a salience impact of ?8%, on average. The salience effect persists when we base estimation only on spatial variation in prices to limit confounding from other simultaneous changes due to shifting hedonic equilibria over time. These effects range from housing prices decreases of 5.4–12.3% depending on the year of sale. Understanding flood risk salience has important implications for flood insurance and disaster policy, the benefits transfer literature, and, more broadly, our understanding of natural disaster resilience. JEL Classification: Q51, Q54, R21 相似文献
62.
Fabian Hollstein Marcel Prokopczuk Björn Tharann Chardin Wese Simen 《European Journal of Finance》2019,25(10):937-965
We comprehensively analyze the predictive power of several option-implied variables for monthly S&P 500 excess returns and realized variance. The correlation risk premium (CRP) and the variance risk premium (VRP) emerge as strong predictors of both excess returns and realized variance. This is true both in- and out-of-sample. Our results also reveal that statistical evidence of predictability does not necessarily lead to economic gains. However, a timing strategy based on the CRP leads to utility gains of more than 5.03% per annum. Forecast combinations provide stable forecasts for both excess returns and realized variance, and add economic value. 相似文献
63.
Christopher J. Cronin 《International Economic Review》2019,60(1):187-218
This study quantifies the moral hazard effect of health insurance on medical expenditure by estimating a dynamic model of within‐year medical care consumption that allows for insurance selection, endogenous health transitions, and individual uncertainty about medical care prices in an environment where insurance has nonlinear cost‐sharing features. The results suggest that moral hazard accounts for 53.1%, on average, of total annual medical expenditure when insured. This estimate is significantly different, and generally larger, than that produced by an alternative model that is representative of the annual medical care decision‐making models commonly found in the literature. 相似文献
64.
Steven B. Caudill Franklin G. Mixon Megan E. Richards 《Managerial and Decision Economics》2019,40(1):37-50
This paper analyzes hospital characteristics that are associated with higher average costs and charges for venipuncture, computed tomography procedures (computerized axial tomography [CAT] scans), and electrocardiograms (EKG). Using data from a Medicare database, our results indicate that higher wages, larger hospital sizes, and greater service quality are associated with higher procedure costs, whereas system membership is generally associated with lower procedure costs. Blinder‐type decompositions, which are the main focus of this study, suggest (a) that venipuncture costs are about 17% to 19% lower at proprietary hospitals than at nonprofit or government hospitals, (b) CAT scan costs are about 6% to 12% lower at nonprofit hospitals than at proprietary and government hospitals, and (c) that EKG costs are about 3% lower at proprietary hospitals than at nonprofit or government hospitals. Lastly, large portions of each of these differences are found to be due to both differences in mean values of the hospitals' characteristics by ownership type and differences in the mechanism by which the hospitals' characteristics are transmitted to procedure costs. 相似文献
65.
Daniel Hernndez‐Hernndez Harold A. Moreno‐Franco Jos‐Luis Prez 《Mathematical Finance》2019,29(4):1039-1065
We study the optimal execution problem with multiplicative price impact in algorithmic trading, when an agent holds an initial position of shares of a financial asset. The interselling decision times are modeled by the arrival times of a Poisson process. The criterion to be optimized consists in maximizing the expected net present value of the gains of the agent, and it is proved that an optimal strategy has a barrier form, depending only on the number of shares left and the level of the asset price. 相似文献
66.
Daniel A. Pellathy Diane A. Mollenkopf Theodore P. Stank Chad W. Autry 《Journal of Business Logistics》2019,40(2):81-104
The centrality of cross‐functional integration (CFI) to supply chain theory and practice has long been recognized. Yet researchers continue to struggle with consistently defining or measuring the CFI construct, thus limiting the utility of CFI research. This research develops (1) a comprehensive definition of CFI that synthesizes previous supply chain research and (2) a valid set of scale items that measure the conceptual domain outlined by this definition. The goal is to build a common foundation for extending knowledge on CFI's antecedents and consequences, and ultimately to improve scholars’ ability to guide a broader practitioner community still struggling to achieve integration in their organizations. 相似文献
67.
68.
Alex Coad Jacob Rubæk Holm Jackie Krafft Francesco Quatraro 《Journal of Evolutionary Economics》2018,28(1):1-11
Amid increasing interest in firm age and its effects on firm performance, this special issue offers an exhaustive review of the literature and a novel collection of evidence on the effects of firm age on performance, including a special focus of interest on innovation performance, financial performance, exports, survival and growth. This editorial positions the theme in the extant literature, and provides key definitions and challenges ahead in the field of evolutionary economics. It introduces the collection of articles composing the special issue. The papers offer a diversity of country contexts, as well as analytical approaches and methods. They include an exhaustive review of the literature on age and firms’ performance, and present original empirical studies focusing on the effects of age on firms’ economic outcomes on the one hand, and on innovation outcomes on the other hand. While most of the papers use econometric analysis, the level of analysis ranges from firm to individual. 相似文献
69.
70.