全文获取类型
收费全文 | 5647篇 |
免费 | 157篇 |
专业分类
财政金融 | 1229篇 |
工业经济 | 442篇 |
计划管理 | 907篇 |
经济学 | 1200篇 |
综合类 | 91篇 |
运输经济 | 41篇 |
旅游经济 | 110篇 |
贸易经济 | 986篇 |
农业经济 | 258篇 |
经济概况 | 538篇 |
邮电经济 | 2篇 |
出版年
2023年 | 27篇 |
2021年 | 40篇 |
2020年 | 86篇 |
2019年 | 99篇 |
2018年 | 117篇 |
2017年 | 124篇 |
2016年 | 115篇 |
2015年 | 92篇 |
2014年 | 123篇 |
2013年 | 686篇 |
2012年 | 151篇 |
2011年 | 203篇 |
2010年 | 167篇 |
2009年 | 200篇 |
2008年 | 177篇 |
2007年 | 172篇 |
2006年 | 129篇 |
2005年 | 144篇 |
2004年 | 124篇 |
2003年 | 148篇 |
2002年 | 137篇 |
2001年 | 109篇 |
2000年 | 127篇 |
1999年 | 127篇 |
1998年 | 137篇 |
1997年 | 119篇 |
1996年 | 98篇 |
1995年 | 111篇 |
1994年 | 91篇 |
1993年 | 81篇 |
1992年 | 67篇 |
1991年 | 84篇 |
1990年 | 75篇 |
1989年 | 59篇 |
1988年 | 61篇 |
1987年 | 56篇 |
1986年 | 65篇 |
1985年 | 98篇 |
1984年 | 99篇 |
1983年 | 92篇 |
1982年 | 79篇 |
1981年 | 74篇 |
1980年 | 72篇 |
1979年 | 67篇 |
1978年 | 76篇 |
1977年 | 68篇 |
1976年 | 68篇 |
1975年 | 60篇 |
1974年 | 57篇 |
1973年 | 39篇 |
排序方式: 共有5804条查询结果,搜索用时 15 毫秒
981.
Why do venture capital firms exist? theory and canadian evidence 总被引:4,自引:0,他引:4
This paper investigates the role of venture capitalists. We view their “raison d’être” as their ability to reduce the cost of informational asymmetries. Our theoretical framework focuses on two major forms of asymmetric information: “hidden information” (leading to adverse selection) and “hidden action” (leading to moral hazard). Our theoretical analysis suggests four empirical predictions.1. Venture capitalists operate in environments where their relative efficiency in selecting and monitoring investments gives them a comparative advantage over other investors. This suggests strong industry effects in venture capital investments. Venture capitalists should be prominent in industries where informational concerns are important, such as biotechnology, computer software, etc., rather than in “routine” start-ups such as restaurants, retail outlets, etc. The latter are risky, in that returns show high variance, but they are relatively easy to monitor by conventional financial intermediaries.2. Within the class of projects where venture capitalists have an advantage, they will still prefer projects where monitoring and selection costs are relatively low or where the costs of informational asymmetry are less severe. Thus, within a given industry where venture capitalists would be expected to focus, we would also expect venture capitalists to favor firms with some track records over pure start-ups. To clarify the distinction between point 1 and point 2, note that point 1 states that if we look across investors, we will see that venture capitalists will be more concentrated in areas characterized by significant informational asymmetry. Point 2 says that if we look across investment opportunities, venture capitalists will still favor those situations which provide better information (as will all other investors). Thus venture capitalists perceive informational asymmetries as costly, but they perceive them as less costly than do other investors.3. If informational asymmetries are important, then the ability of the venture capitalist to “exit” may be significantly affected. Ideally, venture capitalists will sell off their share in the venture after it “goes public” on a stock exchange. If, however, venture investments are made in situations where informational asymmetries are important, it may be difficult to sell shares in a public market where most investors are relatively uninformed. This concern invokes two natural reactions. One is that many “exits” would take place through sales to informed investors, such as to other firms in the same industry or to the venture’s own management or owners. A second reaction is that venture capitalists might try to acquire reputations for presenting good quality ventures in public offerings. Therefore, we might expect that the exits that occur in initial public offerings would be drawn from the better-performing ventures.4. Finally, informational asymmetries suggest that owner-managers will perform best when they have a large stake in the venture. Therefore, we can expect entrepreneurial firms in which venture capitalists own a large share to perform less well than other ventures. This is moral hazard problem, as higher values of a venture capitalist’s share reduce the incentives of the entrepreneur to provide effort. Nevertheless, it might still be best in a given situation for the venture capitalist to take on a high ownership share, since this might be the only way of getting sufficient financial capital into the firm. However, we would still expect a negative correlation between the venture capital ownership share and firm performance.Our empirical examination of Canadian venture capital shows that these predictions are consistent with the data. In particular, there are significant industry effects in the data, with venture capitalists having disproportionate representation in industries that are thought to have high levels of informational asymmetry. Secondly, venture capitalists favor later stage investment to start-up investment. Third, most exit is through “insider” sales, particularly management buyouts, acquisitions by third parties, rather than IPOs. However, IPOs have higher returns than other forms of exit. In addition, the data exhibit the negative relationship between the extent of venture capital ownership and firm performance predicted by our analysis. 相似文献
982.
James Carson Cassandra R. Cole Kevin Gatzlaff Patrick F. Maroney Kathleen A. McCullough 《Risk Management & Insurance Review》2010,13(2):303-322
Universities and colleges continue to face constraints related to classroom space and faculty time, thus increasing the need to consider options such as hybrid courses that can leverage available resources. This article discusses the benefits of a hybrid course, as well as its design and implementation at a large, public university. In addition, for universities that use the introduction to risk and insurance course as a significant course for attracting majors, we identify the benefits for students from the use of hybrid courses, such as the variety of materials and activities utilized, as well as the flexibility in scheduling. This information may be useful in marketing the course so that it will be immediately attractive to students. 相似文献
983.
James R. Johnson 《International Journal of Training and Development》1998,2(2):141-150
Accelerating environmental change has allowed theorists and practitioners to envision an organisational entity known as the learning organisation. The phrase ‘learning organisation’ has existed in the literature for several decades. More than other writers, Senge has popularised the term in the 1990s. However, other writers have made significant contributions to this topic. Woolner, for example, developed a model that identified five distinct stages through which organisations progress on the way to becoming learning organisations. A needed link in the literature should portray a model of leadership and the stages of a learning organisation. The model proposed by this author utilises the three leadership behaviours of visioning, empowerment, and leading-learning, and is offered as a catalyst for improved practice as well as food for thought for researchers who aspire to build theoretical relationships between the topics. 相似文献
984.
The transfer component of training evaluation was examined in a study conducted in 1996. ‘Transfer’ is the evidence that what was learned is actually being used on the job for which it was intended. The study, through a survey technique, examined what organisations are doing to evaluate the transfer of training (as described by the Kirkpatrick taxonomy of the four levels of training evaluation). In addition, training and support strategies which are judged to be the most effective in enhancing transfer were identified. 相似文献
985.
Past research suggests that the cultural value orientation, individualism-collectivism, should be considered when developing international advertising campaigns. The present study examines how (in)consistencies in collectivist values (e.g., familial norms and roles) may affect attitudes and behaviors toward advertised products within a collectivist culture, Mexico. The findings suggest advertisements that depict consistencies in local cultural norms and roles are viewed more favorably and purchase intention is higher than for advertisements that depict inconsistencies. The data provide no support for the moderating role of individual-level differences in value orientation (i.e., allocentric versus idiocentric tendencies) on persuasion measures. Interestingly, product category advertised appears to be the best moderator of the relative strength of role and norm effects on ad attitudes and purchase intention. © 1997 John Wiley & Sons, Inc. 相似文献
986.
There is an ongoing debate over the impact of corporate pro-environment actions and strategies (reflected, for example, in pollution prevention and emission reductions, product re-design, materials stewardship) on corporate financial performance in US corporations today. A review of the existing literature in this area yields no consistent pattern of relationships between corporate environmental proactivism and financial performance when historical corporate accounting performance and stock market measures of performance are used. We revisit this relationship using a novel measure of firm performance: security analyst earnings forecasts. Specifically, we demonstrate a significant, negative relationship between environmental proactivism (using Toxic Release Inventory data) and industry analyst 1- and 5-year earnings-per-share performance forecasts for a sample of 523 US firms in 1992. We discuss the implications of these findings and provide suggestions for future research. © 1997 John Wiley & Sons, Ltd and ERP Environment. 相似文献
987.
988.
This article provides a selective review of Milton Friedman's contributions to monetary economics focusing on five areas in particular: the demand for money, the joint historical and empirical work with Anna J. Schwartz, the theoretical and empirical analyses of the Phillips Curve, monetary policy and monetary dynamics. 相似文献
989.
Data from the AICPA (2009b) show that African–Americans comprise only 1% of CPAs and were only 4% of new hires by CPA firms in academic year 2007–2008. The current study uses social cognitive career theory to examine whether this shortage of diversity may be caused by differences between African–American and Caucasian students in factors that lead to career interest in accounting. Students were surveyed on two key personal variables: self-efficacy and outcome expectations. Results suggest that African–American students are more likely than Caucasian students to perceive accounting as providing outcomes that match their values. However, favorable perceptions may be countered by differences in self-efficacy. African–American students value outcomes provided by accounting, but they may have less confidence, compared to Caucasian students, that they can successfully complete the course of action necessary to enter the profession. 相似文献
990.
In a survey of banks founded from 1994–2002, we find over 85% of respondents think their small-business market was underserved,
72% felt the market needed more competition, almost half indicated they were likely to start a bank because takeover activity
displaced them, and 75% entered due to a market merger. Markets of banks started by displaced managers or following a merger
have performance and lending characteristics similar to comparable banks, but larger changes in asset growth rates. Managers
who responded that small-businesses were underserved have higher numbers and amounts of small-business loans 3 years after
entry. Managers responding that entry was due to mergers eliminating community banks have lower ROA, but larger changes in
market ROA. Markets had smaller changes in ROA when entry was to provide competition or when managers thought the small business
market was underserved.
相似文献
James W. WansleyEmail: |