全文获取类型
收费全文 | 5718篇 |
免费 | 90篇 |
专业分类
财政金融 | 1234篇 |
工业经济 | 441篇 |
计划管理 | 914篇 |
经济学 | 1194篇 |
综合类 | 91篇 |
运输经济 | 42篇 |
旅游经济 | 110篇 |
贸易经济 | 985篇 |
农业经济 | 261篇 |
经济概况 | 534篇 |
邮电经济 | 2篇 |
出版年
2023年 | 27篇 |
2021年 | 42篇 |
2020年 | 92篇 |
2019年 | 101篇 |
2018年 | 117篇 |
2017年 | 124篇 |
2016年 | 124篇 |
2015年 | 90篇 |
2014年 | 122篇 |
2013年 | 682篇 |
2012年 | 149篇 |
2011年 | 202篇 |
2010年 | 167篇 |
2009年 | 199篇 |
2008年 | 176篇 |
2007年 | 171篇 |
2006年 | 129篇 |
2005年 | 142篇 |
2004年 | 124篇 |
2003年 | 148篇 |
2002年 | 136篇 |
2001年 | 109篇 |
2000年 | 127篇 |
1999年 | 126篇 |
1998年 | 137篇 |
1997年 | 118篇 |
1996年 | 98篇 |
1995年 | 111篇 |
1994年 | 90篇 |
1993年 | 80篇 |
1992年 | 67篇 |
1991年 | 83篇 |
1990年 | 74篇 |
1989年 | 58篇 |
1988年 | 60篇 |
1987年 | 56篇 |
1986年 | 65篇 |
1985年 | 97篇 |
1984年 | 98篇 |
1983年 | 92篇 |
1982年 | 78篇 |
1981年 | 73篇 |
1980年 | 72篇 |
1979年 | 67篇 |
1978年 | 75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5808条查询结果,搜索用时 15 毫秒
61.
Since th problems of inflexible technologies are well known, we may ask why they are selected. The case study here agree with others in a wider research programme in that there was a great deal of pain surrounding the inflexible innovation of high rise system built flats; there were technical alternatives which were more flexible; the technology was supported by a centralized bureaucracy whose perception of risk was distored; and there were organizaional alternatives which were less centralized. Lessons are drawn about the problems of developing inflexible technology and the degreee of organizational centralization appropriate for technological innovation. These are restated in terms of incrementalism. A good technology is one which can be developed incrementally, by a relatively decentralized organization. 相似文献
62.
63.
64.
65.
This study addresses the trade‐off between nutrition and taste in expenditure on breakfast cereal, milk, bread, and soft drinks. Within each category, products have similar cost and convenience, but have markedly different flavor and nutritional content. Using annual expenditure data for a large sample of households participating in the ACNielsen Homescan system, we regress a measure of “healthiness” on household demographics and market prices, and find that households with college‐educated heads and higher incomes made significantly healthier choices in all four categories. These effects are puzzling in that the nutritional differences between products were well known to consumers, and there are no cost or convenience differences between them. The presence of children was associated with less healthy choices, especially for cereal and bread, while older households made healthier choices in all categories except milk. 相似文献
66.
Community Supported Agriculture (CSA) programmes have recently received attention for their potential to influence food lifestyle behaviours and health outcomes, though studies have mostly drawn from small samples (n?25). Therefore, we designed a survey to test whether CSA participation links to changes in food lifestyle behaviours and health outcomes, and assess if the magnitude of changes varies based on respondent characteristics. A detailed survey was distributed to existing shareholders from three midsized CSAs near Lexington, Kentucky, and produced 151 usable responses. Through 20 paired questions, respondents reported on their food lifestyle behaviours and health outcomes both prior to joining a CSA and then after CSA participation. Paired two-sided t-tests assess if paired means are statistically different, and multiple regressions of paired differences on socioeconomic factors, self-reported health, and years of CSA enrolment estimate the effect of respondent characteristics on behaviour change. The results strongly suggest that CSAs have the potential to positively impact shareholders’ food lifestyle behaviours and health outcomes, and that those reporting ‘poor health’ prior to CSA enrolment exhibited the most change overall. These results should be taken as an initial, yet promising, analysis of the impact of CSA participation on shareholder food lifestyle behaviours and health outcomes. 相似文献
67.
Much has been made of dysfunctional executive behavior in recent years. As such, the purpose of this article is to assist organizations in the design of executive work. To better construct a work environment that diminishes self-serving and unethical behavior, we propose that organizations structure an executive's work around three factors: the accountability environment, managerial discretion, and relationship composition. These factors are used to describe how organizations can better design executives’ work so as to promote more desirable executive behavior. We describe how these factors should be calibrated, as well as how they affect each other. 相似文献
68.
69.
Perceptions and Willingness to Adopt Hazard Analysis Critical Control Point Practices among Goat Producers 总被引:1,自引:0,他引:1
The major food safety issue confronting federal policymakers is to ensure that consumers can purchase foods acceptably free of microbial contaminants and hazardous chemicals. While these concerns are not new, added dimensions to the problem continually challenge regulators. In most cases, control at the farm level may provide the most cost-effective means of eliminating the pathogens or problems of animal origin. Focusing on the goat industry, this research examines whether goat producers are willing to voluntarily adopt Hazard Analysis Critical Control Point (HACCP) practices. Results reveal a diversified set of preferences, with more than half of the respondents indicating willingness to adopt HACCP practices. 相似文献
70.