全文获取类型
| 收费全文 | 3131篇 |
| 免费 | 50篇 |
专业分类
| 财政金融 | 657篇 |
| 工业经济 | 153篇 |
| 计划管理 | 472篇 |
| 经济学 | 724篇 |
| 综合类 | 103篇 |
| 运输经济 | 7篇 |
| 旅游经济 | 19篇 |
| 贸易经济 | 336篇 |
| 农业经济 | 423篇 |
| 经济概况 | 287篇 |
出版年
| 2025年 | 2篇 |
| 2024年 | 5篇 |
| 2023年 | 34篇 |
| 2022年 | 31篇 |
| 2021年 | 41篇 |
| 2020年 | 116篇 |
| 2019年 | 141篇 |
| 2018年 | 94篇 |
| 2017年 | 114篇 |
| 2016年 | 112篇 |
| 2015年 | 116篇 |
| 2014年 | 188篇 |
| 2013年 | 298篇 |
| 2012年 | 250篇 |
| 2011年 | 291篇 |
| 2010年 | 237篇 |
| 2009年 | 193篇 |
| 2008年 | 203篇 |
| 2007年 | 195篇 |
| 2006年 | 147篇 |
| 2005年 | 109篇 |
| 2004年 | 50篇 |
| 2003年 | 48篇 |
| 2002年 | 48篇 |
| 2001年 | 16篇 |
| 2000年 | 15篇 |
| 1999年 | 10篇 |
| 1998年 | 12篇 |
| 1997年 | 6篇 |
| 1996年 | 10篇 |
| 1995年 | 7篇 |
| 1994年 | 5篇 |
| 1993年 | 2篇 |
| 1992年 | 1篇 |
| 1991年 | 1篇 |
| 1985年 | 7篇 |
| 1984年 | 7篇 |
| 1983年 | 8篇 |
| 1982年 | 3篇 |
| 1981年 | 3篇 |
| 1979年 | 2篇 |
| 1978年 | 2篇 |
| 1977年 | 1篇 |
排序方式： 共有3181条查询结果，搜索用时 15 毫秒
161.
Probir Banerjee Louis C. K. Ma 《Journal of Organizational Computing & Electronic Commerce》2013,23(2):93-110
Prior research mentions that there may be technology assimilation gaps in that a technology may be cumulatively assimilated over a period of time depending on knowledge and experience from initial usage. Thus, stages of partial assimilation are indicated that, if not accounted for, could lead to erroneous understanding of technology adoption and diffusion. However, the phenomenon has not received serious academic attention, and there is still a lack of understanding as to when and why partial assimilation may occur, its consequences to organizations, and remedial steps that could be taken to minimize it. We investigate these issues in the context of assimilation of third-party business-to-business (B2B) e-market by four small firms. Our findings reveal that partial assimilation occurred because of different perceptions of benefit and risk of the two different features of the B2B e-market—the informational (buyer/supplier and product information) and the transactional (auction, request for quote, price negotiation, message archiving, payment systems), arising from different moderating impacts of the organizational (relational norms and the type of business handled) and environmental (perceptions of competitive pressure and institutional norms of technology usage and work practices) contexts of deployment and usage of the two features. The consequences of partial assimilation were mixed; while it was found to be detrimental to firms with low relational norms with their clients, it proved to be gainful for firms with high relational norms. Theoretical and practical implications of the findings are discussed. 相似文献
162.
163.
Hsin-Lu Chang Robert F. Easley Michael J. Shaw 《Journal of Organizational Computing & Electronic Commerce》2013,23(4):237-264
Companies that seek to exploit the cost advantages of business-to-business (B2B) e-Commerce face a variety of strategic options. By analyzing the demand and cost functions for sellers, intermediaries, and buyers, this research develops an economic framework that clarifies the relative advantages of four common B2B e-Commerce channels: private exchange, web-based procurement, public aggregation, and public exchange. This research focuses on addressing two important questions: (1) How does a buyer select a suitable B2B e-Commerce channel (or an e-Marketplace structure) given a variety of market conditions, different levels of product substitution, and a range of purchasing patterns? (2) How does a buyer successfully manage a B2B e-Commerce channel for gaining the highest transaction-level buyer surplus? The analytic and numeric results of our study show that a company's product offerings, the market conditions it faces, and the purchase patterns it implements are all important determinants in the selection of B2B e-Commerce setting. For custom products, private networks (such as the private exchange or web-based procurement models) are more attractive than the public aggregation or exchange models. However, taking market conditions and purchasing behavior into consideration, the web-based procurement model is more suitable for spot purchasing, while the public exchange model is more suitable for systematic purchasing and fragmented markets. On the other hand, the aggregation model is preferable in concentrated markets while the exchange model is more suitable in fragmented markets. These results provide important implications for industrial development of B2B e-Commerce. 相似文献
164.
The relationship between market orientation (MO) and one of its most important consequences – firm performance – has received considerable attention in marketing research. Performance has been largely judged through financial or objective measures. This paper connects assimilation of MO in firms with corporate brand performance since academics have not used judgmental or market-based measures in assessing performance. We have introduced customer-based corporate brand equity to obtain a rounded idea of firm performance. This is achieved through a dyadic study, instead of self-assessment, wherein the marketing chiefs of B2B firms and their respective organisational customers are surveyed to gauge the effects of incorporating MO. We have shown that corporate brand performance is enhanced significantly in the presence of organisational innovativeness. From a practitioner’s perspective, the study details the organisational actions to be taken to assimilate MO and how those can be exploited to enhance corporate brand performance. 相似文献
165.
This paper develops a model of differentiated consumers to examine the consumption effects of genetic modification (GM) under alternative labelling regimes and segregation enforcement scenarios. Analytical results show that if consumers perceive GM products as being different than their traditional counterparts, GM affects consumer welfare and, thus, consumption decisions. When the existence of market imperfections in one or more stages of the supply chain prevents the transmission of cost savings associated with the new technology to consumers, GM results in welfare losses for consumers. The analysis shows that the relative welfare ranking of the ‘no labelling’ and ‘mandatory labelling’ regimes depends on: (i) the level of consumer aversion to GM products; (ii) the size of marketing and segregation costs under mandatory labelling; (iii) the share of the GM product in total production; and (iv) the extent to which GM products are incorrectly labelled as non‐GM products. 相似文献
166.
我国现代农业教育发端于19世纪末到20世纪初，经历刚刚过去的百年发展，已经初步形成了具有中国特色的农业教育体系。回顾20世纪的发展轨迹，有筚路蓝缕的艰辛，有曲折动荡的苦涩。也有辉煌成就的慰藉。本文以20世纪中国农业教育的思想变革和学制发展为主线，尝试将百年农业教育划分为四个历史发展时期，并研究分析了不同历史时期的发展状况和发展特征。 相似文献
167.
This paper identifies three scientific research programs in agricultural economics. The farm management approach (1870-1933), the farm problem approach (1933-1982) and the domestic and global welfare approach (1982-). In respect to agricultural policy research two competitive research programs developed out of the farm crisis of the 1920s. One program argued for government intervention in agriculture. The other argued for stability in the general economy. The former program degenerated during the 1970s because of countervailing empirical evidence and a change in the understanding of positive economics. The latter program stayed progressive by adding the international dimension and by applying welfare economic analysis. Two other important factors influenced the development of agricultural policy. First, the unique institutional set up of the land grant system in which agricultural economics was founded as an applied science with a bias to help farmers. Second, the convergence of agricultural economics towards general economics that shifted the approach from applied to basic. 相似文献
168.
Erik J. O’Donoghue Michael J. Roberts Nigel Key 《Journal of Agricultural Economics》2009,60(1):80-104
We estimate how much United States farms changed enterprise diversification in response to a marked increase in crop insurance coverage brought about by the 1994 Federal Crop Insurance Reform Act, which substantially increased insurance subsidies. The analysis exploits farm‐level panel census data to compare farm‐specific changes in enterprise diversification over time. By examining diversification decisions of the same farms over time, we control for time‐invariant unobserved individual heterogeneity. We then use pooled cross‐sectional data from the United States Department of Agriculture (USDA) Agricultural Resource Management Survey to estimate the relationship between farm diversification and average returns. We find that the insurance subsidies caused a modest increase in enterprise specialisation and production efficiency. Estimated efficiency gains are far less than the subsidies. 相似文献
169.
Marian Rizov 《Agricultural Economics》2005,33(2):215-227
There are large differences across transition countries with respect to agricultural‐sector performance and corresponding scope of farm restructuring and shift to individual farming. In this article we analyze the impact of individualization on productivity growth within an augmented neoclassical growth model framework. This approach allows us to circumvent criticisms on the grounds of lack of theoretical and objective criteria for inclusion of explanatory variables. Furthermore, in the empirical analysis using a panel data covering 15 transition countries over the period 1990–2001 and applying a generalized method of moments with instrumental variable estimator we are able to control for the impact of various factors and the potential endogeneity of variables. Our estimation results are robust and support the view that the shift to individual farming, as well as the overall economic reforms, has positively contributed to the productivity growth in agriculture during the first decade of transition. 相似文献
170.
Genetically modified (GM) crops are popular in many regions of the world, but their deployment in Africa is hindered by safety concerns and regulatory issues, although the continent is in dire need of boosting its food production. Although consumers' acceptance of GM food has been analyzed in many continents, no such studies have been conducted in Africa. Therefore, a survey of 604 consumers was conducted in Nairobi, Kenya, in 2003, to gauge consumers' awareness of GM crops, their willingness to pay (WTP) for GM food, and the factors that influence their WTP. Consumers' knowledge of GM crops was limited and only 38% of the 604 respondents were aware of GM crops. People in higher education and income groups were more aware than others. Regardless, people were generally appreciative of the technology, and a large majority (68%) would be willing to buy GM maize meal at the same price as their favorite brand. Consumers were, however, concerned about possible side effects, especially on the environment and biodiversity. WTP was estimated using a double‐bounded dichotomous choice model, and the mean WTP was found to be 13.8% higher than the average price of non‐GM maize meal. Perceptions of health risk, and ethical and equity concerns had a negative influence on the likelihood of purchasing GM maize meal, whereas trust in government to ensure food quality had a positive influence on WTP. People with at least some secondary education and those in the high‐income category were more likely to purchase GM maize meal at the same price. The study concludes that, because awareness is still low, appropriate communications are needed to involve the consumer in the debate. Consumers' acceptance in this study was high, but the research needs to be expanded to rural areas, where most consumers live, and other survey methods need to be explored. 相似文献