全文获取类型
收费全文 | 20475篇 |
免费 | 519篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 3804篇 |
工业经济 | 1630篇 |
计划管理 | 3369篇 |
经济学 | 4362篇 |
综合类 | 226篇 |
运输经济 | 145篇 |
旅游经济 | 337篇 |
贸易经济 | 3085篇 |
农业经济 | 937篇 |
经济概况 | 3093篇 |
信息产业经济 | 1篇 |
邮电经济 | 6篇 |
出版年
2021年 | 137篇 |
2020年 | 237篇 |
2019年 | 329篇 |
2018年 | 446篇 |
2017年 | 442篇 |
2016年 | 413篇 |
2015年 | 272篇 |
2014年 | 453篇 |
2013年 | 2097篇 |
2012年 | 595篇 |
2011年 | 651篇 |
2010年 | 593篇 |
2009年 | 645篇 |
2008年 | 581篇 |
2007年 | 500篇 |
2006年 | 462篇 |
2005年 | 377篇 |
2004年 | 391篇 |
2003年 | 392篇 |
2002年 | 376篇 |
2001年 | 404篇 |
2000年 | 432篇 |
1999年 | 371篇 |
1998年 | 366篇 |
1997年 | 348篇 |
1996年 | 320篇 |
1995年 | 324篇 |
1994年 | 287篇 |
1993年 | 356篇 |
1992年 | 323篇 |
1991年 | 332篇 |
1990年 | 312篇 |
1989年 | 296篇 |
1988年 | 276篇 |
1987年 | 265篇 |
1986年 | 287篇 |
1985年 | 381篇 |
1984年 | 373篇 |
1983年 | 327篇 |
1982年 | 295篇 |
1981年 | 283篇 |
1980年 | 318篇 |
1979年 | 273篇 |
1978年 | 219篇 |
1977年 | 216篇 |
1976年 | 184篇 |
1975年 | 178篇 |
1974年 | 145篇 |
1973年 | 149篇 |
1972年 | 115篇 |
排序方式: 共有10000条查询结果,搜索用时 359 毫秒
1.
We use a unique firm-level data set including 9000 companies from 26 European Union countries covering four different sectors to take a close look at the relationship between online exports and productivity. The online exporter productivity premium is estimated using different techniques (ordinary least squares, quantile regressions and robust estimation). Results consistently indicate that the estimated online exporter productivity premium is statistically different from zero, positive and significant from an economic point of view. European online exporters, according to these results, are approximately 2% more productive than non-online exporters. Productivity differences between firms could be related to variables that are not included in the empirical model. More research would be needed to address this issue in the future. 相似文献
2.
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
3.
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
4.
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
5.
Stephen G. Dimmock William C. Gerken Zoran Ivković Scott J. Weisbenner 《Journal of Financial Economics》2018,127(1):113-135
Differences in accrued gains and investors’ tax-sensitivity induce variation in a capital gains lock-in effect across mutual funds even for the same stock at the same time. Exploiting this variation, we show this effect influences funds’ governance decisions: higher capital gains decrease the likelihood a fund exits prior to contentious votes and increase the likelihood a fund votes against management. Consistent with tax motivation, these findings are concentrated among funds with tax-sensitive investors. Further, high aggregate capital gains across funds holding a stock predict a higher likelihood management loses a vote and a lower likelihood a contentious vote is proposed. 相似文献
6.
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
7.
Gregory Brown Robert Harris Wendy Hu Tim Jenkinson Steven N. Kaplan David T. Robinson 《Journal of Financial Economics》2021,139(2):561-577
Private equity performance, both for buyouts and venture capital, has been highly cyclical: periods of high fundraising have been followed by periods of low performance. Despite this seemingly predictable variation, we find modest gains, at best, to pursuing realistic, investable strategies that time capital commitments to private equity. This occurs, in part, because investors can only time their commitments to funds; they cannot time when commitments are called or when investments are exited. There is a high degree of time-series correlation in net cash flows even across commitment strategies that allocate capital in a very different manner over time. 相似文献
8.
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
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