全文获取类型
收费全文 | 1127篇 |
免费 | 45篇 |
专业分类
财政金融 | 203篇 |
工业经济 | 79篇 |
计划管理 | 218篇 |
经济学 | 214篇 |
综合类 | 25篇 |
运输经济 | 22篇 |
旅游经济 | 43篇 |
贸易经济 | 244篇 |
农业经济 | 52篇 |
经济概况 | 58篇 |
邮电经济 | 14篇 |
出版年
2023年 | 16篇 |
2022年 | 12篇 |
2021年 | 7篇 |
2020年 | 41篇 |
2019年 | 40篇 |
2018年 | 37篇 |
2017年 | 42篇 |
2016年 | 41篇 |
2015年 | 25篇 |
2014年 | 37篇 |
2013年 | 164篇 |
2012年 | 39篇 |
2011年 | 38篇 |
2010年 | 34篇 |
2009年 | 38篇 |
2008年 | 52篇 |
2007年 | 32篇 |
2006年 | 35篇 |
2005年 | 24篇 |
2004年 | 23篇 |
2003年 | 30篇 |
2002年 | 27篇 |
2001年 | 26篇 |
2000年 | 25篇 |
1999年 | 16篇 |
1998年 | 21篇 |
1997年 | 13篇 |
1996年 | 15篇 |
1995年 | 9篇 |
1994年 | 13篇 |
1993年 | 21篇 |
1992年 | 12篇 |
1991年 | 12篇 |
1990年 | 8篇 |
1989年 | 10篇 |
1988年 | 7篇 |
1987年 | 5篇 |
1986年 | 6篇 |
1985年 | 12篇 |
1984年 | 17篇 |
1983年 | 7篇 |
1981年 | 8篇 |
1979年 | 8篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1976年 | 5篇 |
1974年 | 5篇 |
1973年 | 4篇 |
1971年 | 4篇 |
1969年 | 4篇 |
排序方式: 共有1172条查询结果,搜索用时 31 毫秒
1.
Objective: This study was to determine if calcium fortification yields a higher price per serving in grocery store products. Researchers compared store brand to national brand grocery products in relation to cost in order to examine if calcium values were similar between store brand and national brand products. Methods: A total of 112 store brand and 211 national brand grocery products were collected from three low (national chain store), middle and high priced (Virginia and North Carolina regional store) grocery venues. Products were compared using price and calcium percentage per serving. ANOVA was used to determine between store brand and national brand for price per serving and calcium content, and between grocery venues. Results: National brand fortified products had a significantly lower mean price per serving when compared to national brand non-fortified products (p = 0.0002). There was no statistical difference between store brand fortified and non-fortified products (p = 0.9256). Low priced store brand products had the lowest mean price per serving ($0.34 ±0.24). Conclusions: This study found store brand products have similar calcium content as national brand products. Product cost was lower at low priced store compared to middle and high priced stores. 相似文献
2.
David J. Evans 《Fiscal Studies》2005,26(2):197-224
In social project appraisal, the policy profile of both distributional welfare weights and the social discount rate has risen considerably in recent years. This fact has important implications for the allocation of funds to social projects and policies in countries, and in unions of countries such as the EU. A key component in the formulae for both welfare weights and the social discount rate is the elasticity of marginal utility of consumption, e. A critical review of existing evidence on e suggests that the UK Treasury's preferred value of unity is too low. New evidence presented in this paper, based on the structure of personal income tax rates, suggests that, on average, for developed countries e is close to 1.4. This particular approach to the estimation of e has previously been under‐utilised by researchers. 相似文献
3.
Mark Evans 《Economics of Planning》1994,27(1):39-60
The purpose of this study is to build on the results recently obtained by Poznanski (1990). First, the estimation technique is generalised by removing both the symmetric restrictions and the effects of autocorrelated errors that are present in simple logistic functions. Secondly, attention is drawn to the existence and consequences of multicollinearity when non linear techniques are applied to a general exponential. Thirdly, an attempt is made to quantify the importance of market structure and time lags in adoption as determinants of diffusion speed. Finally, a comparison between these generalised results and Poznanski's is made.The study concludes that, by generalising the estimation technique, some significant changes take place. Changes occur in the ordering and magnitude of diffusion speeds, especially amongst the developing and centrally planned economies. Changes also occur in the nature of the diffusion process, and in the importance attributed to market structure and diffusion lags in determining the rate of diffusion. It is also shown that, for some countries, multicollinearity imposes constraints on the type of generality that can be obtained. 相似文献
4.
5.
The role of entrepreneurs in stimulating growth in the small business economy has received significant interest in the last three decades. This growing interest is prompted, in part, by the government’s assumption that the establishment and expansion of existing small firms could be greatly enhanced by the promotion of entrepreneurial education programmes in colleges and universities. Whilst there has been significant interest in the role, type and effect of entrepreneurs in the economy, few studies have examined the effect of entrepreneurial programmes on the progression of an idea through to commercialisation. This is because such research, whilst seemingly desirable, is problematic. Evidence can be gleaned through the development of suitable conceptual frameworks and methods, to assess the role and impact of entrepreneurial programmes on the commercialisation of products or processes, and the enhancement of entrepreneurial capabilities. To address this problem, the research will examine different approaches and frameworks that have been developed and applied hitherto. The objective of this will be to highlight the difficulties in assessing the motivations, cognitive and behavioural changes of entrepreneurs. Also, the research will demonstrate the need to undertake adequate controls, which illustrate possible improvement in entrepreneurial capabilities, networks, and credibility in comparison to students that embarked on courses without entrepreneurial elements. The process will confine itself to business development within the higher education (HEI) context. The MSEC has as its remit to provide opportunity, education, awareness and training to foster entrepreneurship within science and engineering departments across four universities in Greater Manchester. This setting will provide a unique situation in which to investigate the development of germinal technology businesses from the inception of an idea to the point of incubation, prototype development and investment. There is a requirement to understand the needs of the virgin entrepreneur, possible obstacles to commercialisation and the process of new venture creation. The methodology to be adopted has been identified, and forges new ground on combining positivist and phenomenological paradigms. The multi–paradigm approach supports the use of critical incident technique to reveal greater insights in to the personal and cognitive development of virginal entrepreneurs, the suitability of enterprise programmes to act as catalysts for venture creation, and their role in supporting technology transfer. The research will not only confine itself to examining undergraduate and postgraduate projects within MSEC’s business creation unit, but will also continue to assess the experience of entrepreneurs’ when they leave the programme. The research also documents the economic contribution of the programme, in terms of generation of new technology–based firms and the impact of entrepreneurs joining established small firms. Ultimately the aim is to build a long–term picture of the role of enterprise programmes in HEIs that will inform policy and practice. 相似文献
6.
Klaus Adam George W. Evans Seppo Honkapohja 《Journal of Economic Dynamics and Control》2006,30(12):2725-2748
Earlier studies of the seigniorage inflation model have found that the high-inflation steady state is not stable under learning. We reconsider this issue and analyze the full set of solutions for the linearized model. Our main focus is on stationary hyperinflationary paths near the high-inflation steady state. These paths are shown to be stable under least-squares learning if agents can utilize contemporaneous data. In an economy with a mixture of agents, some of whom only have access to lagged data, stable hyperinflationary paths emerge only if the proportion of agents with access to contemporaneous data is sufficiently high. 相似文献
7.
8.
9.
Elizabeth Monk-Turner Charlie G. Turner 《American journal of economics and sociology》1994,53(4):433-442
A bstract . South Korean chaebols (large family owned firms) have extensive government ties which provide them with favorable treatment. In turn, the government obtains support from the chaebols. The chaebols have gained economic or excess profits through exploiting monopolistic power in the domestic South Korean product market and through exploiting monopsonistic power in the domestic factor market.
How a monopsonistic firm obtains excess profits is illustrated and related to the behavior of the chaebols as a whole. Major focus is on the labor market. The chaebols have discretionary power over how to exploit their monopsonistic position. The status of women in the South Korean work force in light of this discretionary power is considered. An estimate of the income loss involved is made. 相似文献
How a monopsonistic firm obtains excess profits is illustrated and related to the behavior of the chaebols as a whole. Major focus is on the labor market. The chaebols have discretionary power over how to exploit their monopsonistic position. The status of women in the South Korean work force in light of this discretionary power is considered. An estimate of the income loss involved is made. 相似文献
10.
We present a model featuring irreversible investment, economies of scale, uncertain future demand and capital prices, and
a regulator who sets the firm’s output price according to the cost structure of a hypothetical replacement firm. We show that
a replacement firm has a fundamental cost advantage over the regulated firm: it can better exploit the economies of scale
because it has not had to confront the historical uncertainties faced by the regulated firm. We show that setting prices so
low that a replacement firm is just willing to participate is insufficient to allow the regulated firm to expect to break
even whenever it has to invest. Thus, unless the regulator is willing to incur costly monitoring to ensure the firm invests,
revenue must be allowed in excess of that required for a replacement firm to participate. This contrasts with much of the
existing literature, which argues that the market value of a regulated firm should equal the cost of replacing its existing
assets. We also obtain a closed-form solution for the regulated firm’s output price when this price is set at discrete intervals.
In contrast to rate of return regulation, we find that resetting the regulated price more frequently can increase the risk
faced by the firm’s owners, and that this is reflected in a higher output price and a higher weighted-average cost of capital. 相似文献