首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5015篇
  免费   1172篇
财政金融   882篇
工业经济   454篇
计划管理   1188篇
经济学   1278篇
综合类   2篇
运输经济   119篇
旅游经济   50篇
贸易经济   1374篇
农业经济   322篇
经济概况   518篇
  2024年   1篇
  2023年   10篇
  2022年   8篇
  2021年   84篇
  2020年   187篇
  2019年   526篇
  2018年   261篇
  2017年   411篇
  2016年   396篇
  2015年   405篇
  2014年   414篇
  2013年   665篇
  2012年   420篇
  2011年   397篇
  2010年   341篇
  2009年   248篇
  2008年   250篇
  2007年   195篇
  2006年   182篇
  2005年   154篇
  2004年   135篇
  2003年   122篇
  2002年   108篇
  2001年   98篇
  2000年   57篇
  1999年   24篇
  1998年   13篇
  1997年   3篇
  1996年   12篇
  1995年   8篇
  1994年   4篇
  1993年   5篇
  1992年   3篇
  1991年   5篇
  1990年   3篇
  1989年   1篇
  1988年   2篇
  1987年   7篇
  1986年   3篇
  1985年   3篇
  1984年   3篇
  1983年   5篇
  1981年   2篇
  1980年   1篇
  1979年   2篇
  1978年   2篇
  1973年   1篇
排序方式: 共有6187条查询结果,搜索用时 15 毫秒
991.
The literature on international business and international entrepreneurship provides multiple explanations for early internationalization. Using fuzzy-set qualitative comparative analysis, this study examines the antecedents of early internationalization for small firms based in a small economy, focusing on entrepreneurs’ attitudes toward the economic opportunities available in their domestic market, the risk of internationalizing, and the profitability of entering foreign markets. Three additional antecedents are examined: unsolicited orders, existence of underutilized capacity, and the behavior of competitors. The study uncovers three distinct combinations of antecedents that are equifinally linked to the early internationalization of small enterprises, and contributes to the literature through a multi-causal, configurational approach.  相似文献   
992.
993.
A substantial proportion of foodborne illness is associated with food prepared in households. The primary understanding of how foods are handled in private homes comes mostly from questionnaire based studies and direct observation. The aim of this survey was to examine consumers' perceptions and knowledge of safe food handling practices in Greece. More specifically, their attitudes, opinions and self‐reported practices were studied. Data were collected from a total of 399 consumers living in Greece by the use of a self‐administered on‐line survey. The questionnaire consisted of four positive and five negative statements according to the 5‐point Likert scale, which grouped into three constructions using principal component analysis in order to investigate food safety perceptions of consumers. Furthermore, the survey included 11 demographic questions, two close‐ended questions (type yes/no) and four questions that are related to self‐reported food‐handling practices. The results showed that the most commonly known bacterium causing food‐related illness according to respondents' knowledge is Salmonella (99.7%), followed by Escherichia coli (73.9%) and Listeria (58.4%). The overall consumers' score concerning food safety was 32.8 ± 5.37 (full score was 45). No significant differences to the mean score of food safety knowledge were found according to gender, age or the incidence of foodborne illness over the past 12 months. Knowledge and awareness of safe food handling practices was enhanced at higher education levels, while homemakers were found to have deficiencies at this level. Information obtained from consumers can be used to shape educational programs and determine where food safety educational efforts would be most effective and the needed content of the messages.  相似文献   
994.
This article investigates market reactions to major United States Department of Agriculture announcements during non-trading and trading hours in the soybean futures market using microstructure data. Following report release, volume increases and remains elevated for up to 15 to 20 minutes. The volume spikes for the non-trading releases relative to the trading releases, but are identical after the first reaction. Report releases during non-trading hours cause a large spike in volatility at the onset of trading which subsides quickly. In contrast, releases during trading hours result in a smaller volatility spike, which extends for 5–6 min at a higher magnitude. Adjusting volatility by normal trading volatility indicates that volatility in trading hour release is higher in both immediate response and persistence. Return correlations provide little evidence to support systematic under- or overreaction in prices regardless of when the report is released reflecting the efficiency of the market.  相似文献   
995.
996.
We systematically investigate the links between the digit ratio (2D:4D)—a biomarker for prenatal testosterone exposure—and two measures of individual risk taking: (i) risk preferences (RP) over lotteries with real monetary incentives and (ii) self‐reported risk attitude (RA). We find that both the right‐hand and the left‐hand digit ratio are significantly associated with RP: Subjects with lower digit ratios tend to choose riskier lotteries. Neither digit ratio, however, is associated with self‐reported RA.  相似文献   
997.
As the world economy has undergone various changes and shocks, the oil market went through significant fluctuations during the period 1994–2015. This study focuses on discussing the possible factors that determine crude oil prices, which include world economic growth, market power of Organization of the Petroleum Exporting Countries (OPEC), non‐OPEC supply and the value of dollar, taking into account the structural changes that influence the study period, which is quarterly data for the period of 1994.Q1–2015.Q3. For time series stationarity tests, Zivot and Andrews (1992) and Perron (1997) unit root test with structural break is used. To test the existence of a long relationship in the presence of structural changes, the Gregory and Hansen (1996a, 1996b) method of co‐integration is used. For long‐run coefficient, we proceed to estimate fully modified least squares. The result shows a significant influence of non‐OPEC supply, the dollar appreciation and world gross domestic product growth, but OPEC did not have a significant effect on the price of oil, which is indicated by the structural break for OPEC capacity utilisation at 2002.Q1, that indicates the starting point of the loss of OPEC power. Establishing the presence of co‐integration, we apply the evaluation of Granger causality for co‐integrated data, using vector error‐correction model.  相似文献   
998.
This paper highlights the effect of firms’ position on firms’ strategies with corporate social responsibility (CSR) practices under three different cases: Cournot competition; Stackelberg competition with the CSR firm taking the leader position and turnover, with the profit maximising (PM) firm playing as the leader. Some interesting conclusions are achieved. First, the CSR firm always produces more than the PM firm. Second, the outputs of both firms (the consumer surplus) under the PM firm's leading position are larger than those under Cournot. Third, the profits of both firms (producer surplus) under the PM firm playing the leading position are less than those under Cournot. Surprisingly, when the PM firm first moves, the PM firm's profits are the lowest while the CSR firm's outputs are the highest in all three cases. Finally, the relationship of social welfare under the three cases is ambiguous.  相似文献   
999.
Research analysing the antecedents of a firm’s absorptive capacity suggests that transformational leadership (TL) is one of its main determinants. However, the few studies focusing on the relationship between these two variables do not explicitly assess why transformational leaders facilitate knowledge acquisition, sharing and retention inside firms. This paper suggests that the reason is that the former contributes to the creation of an organisational context that favours learning processes. We test our research model on a sample of 467 Spanish industrial firms. Findings provide evidence that TL is positively related to the firm’s absorptive capacity and that this relationship is mediated by some organisational learning facilitators: experimentation, risk-taking, interacting with external environment and dialogue.  相似文献   
1000.
This paper examines how Social Security dependent benefits impact the labor supply of married women aged 25–54. Specifically, I investigate whether the decrease in the rate of return to women's work discourages them from participating in the labor force by simulating expected net payroll tax rates and dependent benefits. Dependent benefits may reduce the net return to women's work, as they usually pay the full payroll tax without receiving marginal benefits for additional earnings if they claim benefits based on their husbands' earnings records. The results show that high net payroll tax rates reduce married women's work incentives, particularly those near retirement age. (JEL H24, H55, J22)  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号