全文获取类型
收费全文 | 30366篇 |
免费 | 754篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 6100篇 |
工业经济 | 2407篇 |
计划管理 | 5125篇 |
经济学 | 6639篇 |
综合类 | 352篇 |
运输经济 | 185篇 |
旅游经济 | 486篇 |
贸易经济 | 4659篇 |
农业经济 | 1456篇 |
经济概况 | 3631篇 |
信息产业经济 | 1篇 |
邮电经济 | 80篇 |
出版年
2021年 | 177篇 |
2020年 | 329篇 |
2019年 | 440篇 |
2018年 | 567篇 |
2017年 | 608篇 |
2016年 | 557篇 |
2015年 | 389篇 |
2014年 | 628篇 |
2013年 | 3004篇 |
2012年 | 816篇 |
2011年 | 853篇 |
2010年 | 782篇 |
2009年 | 926篇 |
2008年 | 804篇 |
2007年 | 742篇 |
2006年 | 683篇 |
2005年 | 602篇 |
2004年 | 580篇 |
2003年 | 633篇 |
2002年 | 591篇 |
2001年 | 604篇 |
2000年 | 668篇 |
1999年 | 555篇 |
1998年 | 559篇 |
1997年 | 575篇 |
1996年 | 536篇 |
1995年 | 515篇 |
1994年 | 522篇 |
1993年 | 539篇 |
1992年 | 545篇 |
1991年 | 572篇 |
1990年 | 491篇 |
1989年 | 421篇 |
1988年 | 415篇 |
1987年 | 389篇 |
1986年 | 448篇 |
1985年 | 622篇 |
1984年 | 592篇 |
1983年 | 541篇 |
1982年 | 521篇 |
1981年 | 527篇 |
1980年 | 500篇 |
1979年 | 467篇 |
1978年 | 411篇 |
1977年 | 331篇 |
1976年 | 322篇 |
1975年 | 308篇 |
1974年 | 243篇 |
1973年 | 262篇 |
1972年 | 196篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Pavlo R. Blavatskyy 《Economics of Transition》2021,29(2):361-365
We collected 469 frontal face images of Ukrainian cabinet ministers who were in office in 2000–2020. For each image, the minister's body mass index was estimated using a computer vision algorithm. The time series of median estimated body mass index of cabinet ministers co-moves over time with two existing measures of corruption – World Bank worldwide governance indicator Control of Corruption, and the discrepancy between the quantity of luxury wristwatches exported from Switzerland to Ukraine (reported by Swiss statistics) and the corresponding quantity imported by Ukraine from Switzerland (reported by Ukrainian statistics). 相似文献
2.
Peter C. Young 《International Journal of Forecasting》2018,34(2):314-335
The main objective of this paper it to model the dynamic relationship between global averaged measures of Total Radiative Forcing (RTF) and surface temperature, measured by the Global Temperature Anomaly (GTA), and then use this model to forecast the GTA. The analysis utilizes the Data-Based Mechanistic (DBM) approach to the modelling and forecasting where, in this application, the unobserved component model includes a novel hybrid Box-Jenkins stochastic model in which the relationship between RTF and GTA is based on a continuous time transfer function (differential equation) model. This model then provides the basis for short term, inter-annual to decadal, forecasting of the GTA, using a transfer function form of the Kalman Filter, which produces a good prediction of the ‘pause’ or ‘levelling’ in the temperature rise over the period 2000 to 2011. This derives in part from the effects of a quasi-periodic component that is modelled and forecast by a Dynamic Harmonic Regression (DHR) relationship and is shown to be correlated with the Atlantic Multidecadal Oscillation (AMO) index. 相似文献
3.
Aaron H. Anglin Jeremy C. Short Will Drover Regan M. Stevenson Aaron F. McKenny Thomas H. Allison 《Journal of Business Venturing》2018,33(4):470-492
We extend the entrepreneurship literature to include positive psychological capital — an individual or organization's level of psychological resources consisting of hope, optimism, resilience, and confidence — as a salient signal in crowdfunding. We draw from the costless signaling literature to argue that positive psychological capital language usage enhances crowdfunding performance. We examine 1726 crowdfunding campaigns from Kickstarter, finding that entrepreneurs conveying positive psychological capital experience superior fundraising performance. Human capital moderates this relationship while social capital does not, suggesting that costly signals may, at times, enhance the influence of costless signals. Post hoc analyses suggest findings generalize across crowdfunding types, but not to IPOs. 相似文献
4.
5.
AbstractTraditional warranty analysis focuses on the reliability of a product and offers warranty designs that compensate a consumer if the item fails. We introduce the concept of a performance-based warranty (PBW) that guarantees that a product will operate at or above some baseline level of performance, such as a minimum energy efficiency for an appliance. We illustrate how consumer behavior can change in the presence of a PBW and define the parameters for which a manufacturer may increase revenue. Finally, we present an algorithm to solve for the optimal PBW design given a consumer’s belief about the expected performance of the product. 相似文献
6.
7.
Joseph Amankwah-Amoah Zaheer Khan Ellis L.C. Osabutey 《International Business Review》2021,30(3):101802
The emergence of the COVID-19 pandemic has adversely affected the fortunes of multiple companies around the globe. Accordingly, questions are increasingly being asked about how organizations can revitalize during and after a crisis. Yet, we have limited understanding of how organizations renew themselves during crises over time. We explore this question through the lens and examination of two South-Asian airlines: Pakistan International Airlines and Sri Lankan Airlines. The cases offer important insights into the reasons behind underperformance of state-controlled enterprises and renewal activities. We shed light on strategic renewal (SR) in the wake of increasing liberalization and deregulations in the global airline industry. To this end, we propose a four-stage approach towards renewing such underperforming organizations to respond effectively to black swan events and external shocks. 相似文献
8.
This paper studies the expansion of an option price (with bounded Lipschitz payoff) in a stochastic volatility model including a local volatility component. The stochastic volatility is a square root process, which is widely used for modeling the behavior of the variance process (Heston model). The local volatility part is of general form, requiring only appropriate growth and boundedness assumptions. We rigorously establish tight error estimates of our expansions, using Malliavin calculus. The error analysis, which requires a careful treatment because of the lack of weak differentiability of the model, is interesting on its own. Moreover, in the particular case of call–put options, we also provide expansions of the Black–Scholes implied volatility that allow to obtain very simple formulas that are fast to compute compared to the Monte Carlo approach and maintain a very competitive accuracy. 相似文献
9.
Quantitative Marketing and Economics - Little is known about how different types of advertising affect brand attitudes. We investigate the relationships between three brand attitude variables... 相似文献
10.
Teresa C. Lacerda 《Business Horizons》2019,62(2):185-197
An economic recession is a type of crisis originated from external factors that may imperil an organization’s survival depending on the intensity and duration of the crisis. In peripheral European countries, such as Portugal, the recent financial crisis had devastating effects on various business activities. As a result, Portugal represents an important case study in examining how some corporate leaders have handled the economic recession successfully. I interviewed 20 corporate managers to capture their perceptions of the leadership traits and behaviors exhibited by their CEOs in guiding their companies through the recession. In economic recessions, negative constraints do not affect the most effective leaders, who instead erect barriers against the high-pressure conditions to create a supportive, positive work environment. In order to achieve maximum effectiveness, leaders must act as blocking agents against the negative social impacts of the economic crisis, including the fragility of trust in organizational life (i.e., a barrier against distrust), uncertainty of the future (i.e., a barrier against uncertainty), and toxic emotions (i.e., a barrier against toxic emotions). 相似文献