全文获取类型
收费全文 | 22904篇 |
免费 | 612篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 4564篇 |
工业经济 | 1803篇 |
计划管理 | 3826篇 |
经济学 | 4994篇 |
综合类 | 355篇 |
运输经济 | 140篇 |
旅游经济 | 351篇 |
贸易经济 | 3672篇 |
农业经济 | 981篇 |
经济概况 | 2787篇 |
信息产业经济 | 3篇 |
邮电经济 | 41篇 |
出版年
2021年 | 128篇 |
2020年 | 286篇 |
2019年 | 378篇 |
2018年 | 494篇 |
2017年 | 528篇 |
2016年 | 486篇 |
2015年 | 330篇 |
2014年 | 500篇 |
2013年 | 2379篇 |
2012年 | 638篇 |
2011年 | 721篇 |
2010年 | 663篇 |
2009年 | 708篇 |
2008年 | 653篇 |
2007年 | 596篇 |
2006年 | 522篇 |
2005年 | 429篇 |
2004年 | 444篇 |
2003年 | 452篇 |
2002年 | 410篇 |
2001年 | 460篇 |
2000年 | 486篇 |
1999年 | 456篇 |
1998年 | 450篇 |
1997年 | 449篇 |
1996年 | 378篇 |
1995年 | 386篇 |
1994年 | 380篇 |
1993年 | 390篇 |
1992年 | 439篇 |
1991年 | 425篇 |
1990年 | 342篇 |
1989年 | 319篇 |
1988年 | 274篇 |
1987年 | 276篇 |
1986年 | 288篇 |
1985年 | 400篇 |
1984年 | 395篇 |
1983年 | 401篇 |
1982年 | 343篇 |
1981年 | 354篇 |
1980年 | 299篇 |
1979年 | 319篇 |
1978年 | 279篇 |
1977年 | 244篇 |
1976年 | 237篇 |
1975年 | 233篇 |
1974年 | 198篇 |
1973年 | 178篇 |
1972年 | 132篇 |
排序方式: 共有10000条查询结果,搜索用时 800 毫秒
1.
The Review of Austrian Economics - A key insight in Hayek’s thought is the importance of so-called “local knowledge” in economic activity. In The Fatal Conceit, he states that... 相似文献
2.
We investigate the impact of housing wealth, credit availability and financial distress on college enrolment decisions. We find that housing wealth is negatively related to enrolment in public schools and positively related to enrolment in private schools. This evidence suggests that, on average, students substituted away from private schools towards public institutions during the recent financial crisis. 相似文献
3.
I. E. Ilina E. N. Zharova S. P. Burlankov 《Studies on Russian Economic Development》2018,29(2):207-213
This paper presents an approach to assessing the efficacy of public spending on research and development in state programs. At present, there is a need to develop a unified approach to the analysis and evaluation of the efficacy of such spending from the perspective of participants in state programs (federal executive bodies). The proposed approach does not allow evaluating the efficacy of public spending on the development of research areas assigned to the authors. 相似文献
4.
Without guaranteed compensation, granted by the German Renewable Energy Sources Act (Erneuerbare Energien Gesetz/EEG), biogas plants compete with all other plant types on the market for electrical energy. However, exchange-based electricity products do not currently permit an economically viable operation of biogas plants owing to their cost situation. 相似文献
5.
6.
Objective: This study was to determine if calcium fortification yields a higher price per serving in grocery store products. Researchers compared store brand to national brand grocery products in relation to cost in order to examine if calcium values were similar between store brand and national brand products. Methods: A total of 112 store brand and 211 national brand grocery products were collected from three low (national chain store), middle and high priced (Virginia and North Carolina regional store) grocery venues. Products were compared using price and calcium percentage per serving. ANOVA was used to determine between store brand and national brand for price per serving and calcium content, and between grocery venues. Results: National brand fortified products had a significantly lower mean price per serving when compared to national brand non-fortified products (p = 0.0002). There was no statistical difference between store brand fortified and non-fortified products (p = 0.9256). Low priced store brand products had the lowest mean price per serving ($0.34 ±0.24). Conclusions: This study found store brand products have similar calcium content as national brand products. Product cost was lower at low priced store compared to middle and high priced stores. 相似文献
7.
Hilliard Jitka Jahera John S. Zhang Haoran 《Review of Quantitative Finance and Accounting》2019,53(4):1165-1193
Review of Quantitative Finance and Accounting - We examine how changes in dividend policy in 2008 as the financial crisis was unfolding influenced firm risk-adjusted returns in the following years.... 相似文献
8.
Most development projects encounter a highly uncertain entitlement process that is largely uncontrollable by developers. In this study, entitlement is modeled as a separate stage within a compound real option, where developers begin with minimal control (maximum risk) and each successful stage increases control (decreases risk). We solve the model analytically, provide three‐dimensional numerical comparisons, and empirically test the model's predictions using hand collected rezoning petitions. Our main result refines the classic development option model: developers first invest early (secure entitlements) in order to obtain the option to subsequently delay investment (construct the optimal building at the optimal time). 相似文献
9.
Farasat A. S. Bokhari Franco Mariuzzo Arnold Polanski 《Journal of Economics & Management Strategy》2020,29(3):516-542
During patent litigation, pay‐for‐delay (P4D) deals involve a payment from a patent holder of a branded drug to a generic drug manufacturer to delay entry and withdraw the patent challenge. In return for staying out of the market, the generic firm receives a payment, and/or an authorized licensed entry at a later date, but before the patent expiration. We examine why such deals are stable when there are multiple potential entrants. We combine the first‐mover advantage for the first generic with the ability of the branded manufacturer to launch an authorized generic (AG) to show when P4D deals are an equilibrium outcome. We further show that limiting a branded firm's ability to launch an AG before entry by a successful challenger will deter such deals. However, removing exclusivity period for the first generic challenger will not. 相似文献
10.
Adam S. Hayes 《Applied economics letters》2019,26(7):554-560
This study back-tests a marginal cost of production model proposed to value the digital currency Bitcoin. Results from both conventional regression and vector autoregression (VAR) models show that the marginal cost of production plays an important role in explaining Bitcoin prices, challenging recent allegations that Bitcoins are essentially worthless. Even with markets pricing Bitcoin in the thousands of dollars each, the valuation model seems robust. The data show that a price bubble that began in the Fall of 2017 resolved itself in early 2018, converging with the marginal cost model. This suggests that while bubbles may appear in the Bitcoin market, prices will tend to this bound and not collapse to zero. 相似文献