全文获取类型
收费全文 | 20763篇 |
免费 | 532篇 |
国内免费 | 49篇 |
专业分类
财政金融 | 2648篇 |
工业经济 | 1193篇 |
计划管理 | 2912篇 |
经济学 | 3684篇 |
综合类 | 654篇 |
运输经济 | 115篇 |
旅游经济 | 165篇 |
贸易经济 | 2229篇 |
农业经济 | 862篇 |
经济概况 | 2284篇 |
水利工程 | 4498篇 |
信息产业经济 | 4篇 |
邮电经济 | 96篇 |
出版年
2022年 | 147篇 |
2021年 | 228篇 |
2020年 | 303篇 |
2019年 | 347篇 |
2018年 | 397篇 |
2017年 | 472篇 |
2016年 | 445篇 |
2015年 | 332篇 |
2014年 | 546篇 |
2013年 | 1491篇 |
2012年 | 908篇 |
2011年 | 1136篇 |
2010年 | 924篇 |
2009年 | 893篇 |
2008年 | 885篇 |
2007年 | 903篇 |
2006年 | 888篇 |
2005年 | 901篇 |
2004年 | 587篇 |
2003年 | 436篇 |
2002年 | 349篇 |
2001年 | 355篇 |
2000年 | 343篇 |
1999年 | 329篇 |
1998年 | 299篇 |
1997年 | 322篇 |
1996年 | 252篇 |
1995年 | 228篇 |
1994年 | 219篇 |
1993年 | 270篇 |
1992年 | 292篇 |
1991年 | 233篇 |
1990年 | 222篇 |
1989年 | 214篇 |
1988年 | 201篇 |
1987年 | 205篇 |
1986年 | 202篇 |
1985年 | 228篇 |
1984年 | 228篇 |
1983年 | 213篇 |
1982年 | 205篇 |
1981年 | 214篇 |
1980年 | 211篇 |
1979年 | 226篇 |
1978年 | 184篇 |
1977年 | 175篇 |
1976年 | 164篇 |
1975年 | 125篇 |
1974年 | 141篇 |
1973年 | 129篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
I. E. Ilina E. N. Zharova S. P. Burlankov 《Studies on Russian Economic Development》2018,29(2):207-213
This paper presents an approach to assessing the efficacy of public spending on research and development in state programs. At present, there is a need to develop a unified approach to the analysis and evaluation of the efficacy of such spending from the perspective of participants in state programs (federal executive bodies). The proposed approach does not allow evaluating the efficacy of public spending on the development of research areas assigned to the authors. 相似文献
2.
Alan P. Ker 《Revue canadienne d'agroeconomie》2021,69(1):17-17
President Biden was sworn in on January 20, 2021 after a 4‐year term by President Trump. Certainly, Trump's norm breaking presidency impacted Canada in significant ways and the agricultural sector was no exception. In this issue, we have a set of four short articles discussing the possible implications on Canadian agriculture of transitioning from a Trump to Biden presidency. Issues related to Canada‐U.S. agricultural trade, political norms and uncertainty, U.S. domestic support, participation in trade agreements, and U.S.‐China relations are all considered. 相似文献
3.
H.J. Christian van der Krift Josette M.P. Gevers Arjan J. van Weele 《Journal of Purchasing & Supply Management》2021,27(3):100698
Despite the importance of good collaborative relationships in interorganisational projects, clients and contractors often develop adversarial relationships due to perceptual distance about key project issues. In this case study research, we investigated how perceptual distance emerges and changes over time, and how the collaborative relationship between client and contractor develops alongside these dynamics. In this exploration, we built upon agency theory and stewardship theory as complementary perspectives for understanding client-contractor collaborative relationships. We gathered quantitative and qualitative data in two projects, conducting three assessments in about one year. We found that perceptual distance increased and decreased over time, and that a reduction was typically associated with the collaborative relationship being characterized by stewardship rather than agency. These findings suggest that a regular assessment and evaluation of partners’ perceptions of critical project issues is warranted to timely detect and counteract perceptual distance. Moreover, partners would best adopt a stewardship orientation to reduce perceptual distance, although this may take considerable effort given the distributive nature of many pre-project negotiations. 相似文献
4.
Rodríguez-Pérez Ángel Mariano Pérez-Calañas Cinta Pulido-Calvo Inmaculada 《Water Resources Management》2021,35(6):1977-1990
Water Resources Management - This paper aims to evaluate the possibility of using non-utilized hydraulic energy in urban water distribution systems. For this purpose, the viability and possible... 相似文献
5.
Vishal P. Baloria Kenneth J. Klassen Christine I. Wiedman 《Contemporary Accounting Research》2019,36(2):904-933
Demand for disclosures on environmental, social, and governance (ESG) issues has increased dramatically. Using corporate political spending disclosures as our setting, we conduct a detailed inquiry of 541 political spending‐related shareholder proposals from 2004 to 2012 to highlight the role of shareholder activism as a mechanism to motivate ESG disclosure. Unlike earlier studies, we examine both proposals that went to a vote and proposals that were withdrawn by the activist, allowing us to assess more comprehensively the success of shareholder activism. We find that 20 percent of firms targeted by disclosure proposals begin disclosing in the subsequent year, although implementation rates vary by proposal type—8 percent for proposals subject to a vote versus 56 percent for proposals withdrawn. The sponsor is also important: unions and public pension funds are less likely than other activists to target firms with agency problems and are less successful in having proposals withdrawn, and the implementations they obtain are viewed more negatively by the broader investor base. Our findings highlight shareholder proposals as one mechanism through which investors can successfully express their preferences for corporate disclosure policies. Given activists' long‐standing interest in environmental and social disclosure policies, we believe our findings generalize to a broader set of ESG disclosures. 相似文献
6.
7.
I. P. Ivanchenko A. N. Prokopenko 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2020,53(6):671-680
Equipment of the Krasnoyarsk HPP is considered as an example to analyze the dependence of crack formation in runner blades on the operating conditions of t 相似文献
8.
Judy Z. Stephenson 《The Economic history review》2020,73(2):409-430
This article provides new information and data on the work and pay of skilled and semi-skilled men on a large London construction project in the early 1700s. It offers firm-level evidence on the employment relation in the construction industry at the time and sheds some light on the number of days worked per year and per week, showing that employment was more irregular and seasonal than current estimates of income infer. The patterns are considered in the context of new debates about industriousness and economic growth. 相似文献
9.
10.
An inventory analysis of rural pollution loads in China. 总被引:1,自引:0,他引:1
Rural pollution has attracted increasing attention over the past decade for its important consequences on surface and groundwater quality. This is particularly so in China due to the wide and effective control of industrial and municipal wastewater discharges over the past decade. Based on the discussion of rural activities in China, this paper develops a new method of inventory analysis through the definition of elementary unit (EU). This inventory analysis approach is then applied to estimate the total rural pollution loads of COD, TN and TP, as well as their spatial distributions in China. Further analysis is also conducted to investigate the correlations between rural pollution loads and agricultural production outputs, as well as population. It is found that China's agriculture is developing largely at the cost of environment quality, and a high population, as well as the increasing demand for agricultural products, is one of the dominant driving forces. The constructed EKC, which describes the relationship between rural pollution loads and agricultural income, also reveals that current agricultural development in China is mostly far from de-locked from the environmental problem. 相似文献