全文获取类型
收费全文 | 23308篇 |
免费 | 460篇 |
专业分类
财政金融 | 4525篇 |
工业经济 | 1948篇 |
计划管理 | 3691篇 |
经济学 | 5150篇 |
综合类 | 609篇 |
运输经济 | 151篇 |
旅游经济 | 416篇 |
贸易经济 | 3628篇 |
农业经济 | 1173篇 |
经济概况 | 2462篇 |
信息产业经济 | 2篇 |
邮电经济 | 13篇 |
出版年
2021年 | 116篇 |
2020年 | 263篇 |
2019年 | 355篇 |
2018年 | 386篇 |
2017年 | 440篇 |
2016年 | 415篇 |
2015年 | 301篇 |
2014年 | 453篇 |
2013年 | 2637篇 |
2012年 | 584篇 |
2011年 | 771篇 |
2010年 | 599篇 |
2009年 | 658篇 |
2008年 | 688篇 |
2007年 | 615篇 |
2006年 | 549篇 |
2005年 | 519篇 |
2004年 | 508篇 |
2003年 | 550篇 |
2002年 | 546篇 |
2001年 | 526篇 |
2000年 | 533篇 |
1999年 | 449篇 |
1998年 | 475篇 |
1997年 | 478篇 |
1996年 | 425篇 |
1995年 | 380篇 |
1994年 | 372篇 |
1993年 | 446篇 |
1992年 | 401篇 |
1991年 | 383篇 |
1990年 | 341篇 |
1989年 | 293篇 |
1988年 | 281篇 |
1987年 | 263篇 |
1986年 | 287篇 |
1985年 | 411篇 |
1984年 | 474篇 |
1983年 | 391篇 |
1982年 | 390篇 |
1981年 | 396篇 |
1980年 | 369篇 |
1979年 | 389篇 |
1978年 | 301篇 |
1977年 | 283篇 |
1976年 | 263篇 |
1975年 | 201篇 |
1974年 | 228篇 |
1973年 | 174篇 |
1972年 | 116篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
Proches Ngatuni John Capstaff Andrew Marshall 《Journal of Business Finance & Accounting》2007,34(1-2):33-64
Abstract: This study finds evidence of significant long-term underperformance following rights issues made during 1986-95 in the UK. The findings are resilient to a number of methodological controls. In contrast, our results for a smaller sample of open offers made during 1991-95 show strong positive performance over a 5-year post-issue period, implying that firms making open offers had better growth prospects than firms making rights issues. During 1986-90, a period when open offers were rarely used, firms appeared to be making rights issues to exploit overvaluation. However, this was not evident for rights issues made during 1991-95, a period when open offers were more commonly used. 相似文献
82.
Jonathan D. Linton Author Vitae 《Technological Forecasting and Social Change》2008,75(5):583-594
Many see Nanotechnology as the technology that will underlie the next Schumpeterian wave creating new opportunities for wealth and job creation. Further it is a process based or materials technology. Yet all currently used models of innovation are based on assembled products or service products and these simply do not recognize the differences in materials products nor the “enabling” nature of Nanotechnologies. If nanotechnology is poised to become the economic engine of this millennium and if current models of innovation, which are utilized, by policy makers and firm based strategist alike are based on technology product paradigms that are dissimilar to the realities of nanotechnology and other process-based technologies then there is cause for concern.Here the authors provide a model and supporting cases demonstrating a new process or materials based innovation model that is based on the tight coupling between product and process innovation of not only Nanotechnology-based products but other process-based products. This is an important finding, because it identifies and remedies a gap in the literature associated with earlier process and product innovation models. For process-based products like materials, food, chemicals and nanotechnologies any change to the manufacturing processes results in significant changes in end product features. The implications of this model to practice are considered. 相似文献
83.
Small accounting practices (SAP), most of which are sole principals, are an important part of the accounting profession and the Australian economy. This exploratory study identifies issues and challenges experienced by small accounting principals in Far North Queensland, Australia. The findings generally correspond with previous research, ranking staffing and keeping up to date through professional development as key areas of concern, and also highlighting the expectation gap between SAP principals and their clients. Stress emerged as a major concern for principals, and new areas of possible conflict of interests were uncovered. A number of potential areas for future research, including comparative studies in city and suburban areas, have been identified. 相似文献
84.
Andrew Prevost Ramesh P. Rao & John D. Wagster 《Journal of Business Finance & Accounting》2002,29(7&8):1079-1104
On April 1, 1988, New Zealand stopped the double taxation of dividends by implementing a full dividend imputation program. Because many believed that the tax advantage of debt had led to more highly leveraged firms subject to greater financial risk than was socially optimal, it was hoped the removal of incentives to finance with debt would result in a more efficient allocation of capital. The empirical results suggest that the shareholder wealth gain from dividend imputation was more than offset in firms with large debt levels. Moreover, an examination of debt ratios indicates debt levels declined in the post–imputation period. 相似文献
85.
86.
Milton D. Rosenau 《Journal of Product Innovation Management》1994,11(1):89-92
The first review is of a business novel that contains important lessons about teams and teamwork. The enjoyable story is based on the product development activities of a fictitious Fungible Company, and is an absorbing book to read. The second review covers a book on Total Quality Management (TQM). As our reviewer points out, this book deals with both the philosophy and tools, covering all aspects of TQM.
Finally, we inaugurate a new feature, Brief Notes. From time to time, we will provide short comments about books that may have a specialized or some limited value to practitioners. 相似文献
Finally, we inaugurate a new feature, Brief Notes. From time to time, we will provide short comments about books that may have a specialized or some limited value to practitioners. 相似文献
87.
Traditional methods of estimating market volatility use daily return observations from a stock index to calculate monthly variance. We break with tradition and estimate stock market volatility using the daily, cross-sectional standard deviation of returns for all firms trading on the New York Stock Exchange and the American Stock Exchange. We find a significantly positive relation between risk and return. Market volatility is estimated to be about half the volatility level previously reported. The intraday, cross-sectional market volatility measure provides findings consistent with risk-return theory. 相似文献
88.
Dynamic futures‐hedging ratios are estimated across seven markets using generalized models of the variance/covariance structure. The hedging performances of the resultant dynamic strategies are then compared with static and naïve strategies, both in‐ and out‐of‐sample. Bayesian‐adjusted hedge ratios also are employed as error purgers. The empirical results indicate that the generalized dynamic models are well specified and that their use in determining optimal hedge ratios can lead to improvements in hedging performance as measured by the volatilities of the returns on the optimally hedged position. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:241–260, 2003 相似文献
89.
In this article, we examine the impact of 21 different types of scheduled macroeconomic news announcements on S&P 100 stock‐index option volume and implied volatility. We find that there is a 2‐h delay after the announcement before volume increases. However, there is an immediate increase in volatility, which slowly dissipates over several hours. Further analysis shows that most of the high volume and volatility after announcements come from the announcements that are considered bad news. That is, bad news creates high volatility and high volume, whereas good news elicits lower volume and is not associated with higher volatility. These results are not consistent with the predictions of any one model. We also find that the announcements that cause the largest reaction in the equity option market are Consumer Credit, Consumer Spending, Factory Inventories, NAPM, and Non‐Farm Payrolls. Six other announcements elicit a mild response. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:315–345, 2003 相似文献
90.
The primary purpose of this research was to investigate the effect of investment in information technology in a supply chain. The results of that investigation are presented by focusing on an empirically tested supply chain relationship model containing both behavioral and operational constructs. The four behavioral constructs represented in the model are relationship trust, relationship commitment, relationship dependence, and long‐term relationship orientation. The four operational constructs represented in the model are retailer investment in interorganizational information technology, perceived supplier investment in interorganizational information technology, logistics efficiency, and logistics effectiveness. Among other findings, the results of the investigation found that perceived supplier investment in interorganizational information technology has a significant and positive effect on logistics efficiency. 相似文献