首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   675篇
  免费   23篇
财政金融   110篇
工业经济   60篇
计划管理   126篇
经济学   115篇
综合类   22篇
运输经济   5篇
旅游经济   35篇
贸易经济   146篇
农业经济   29篇
经济概况   50篇
  2023年   12篇
  2021年   10篇
  2020年   12篇
  2019年   19篇
  2018年   22篇
  2017年   21篇
  2016年   15篇
  2015年   17篇
  2014年   21篇
  2013年   84篇
  2012年   23篇
  2011年   21篇
  2010年   22篇
  2009年   27篇
  2008年   32篇
  2007年   16篇
  2006年   25篇
  2005年   17篇
  2004年   14篇
  2003年   20篇
  2002年   19篇
  2001年   20篇
  2000年   18篇
  1999年   10篇
  1998年   6篇
  1997年   11篇
  1996年   12篇
  1995年   7篇
  1994年   6篇
  1993年   4篇
  1992年   10篇
  1991年   10篇
  1990年   6篇
  1989年   7篇
  1987年   5篇
  1986年   4篇
  1985年   12篇
  1984年   5篇
  1983年   8篇
  1982年   10篇
  1981年   7篇
  1980年   3篇
  1979年   6篇
  1978年   5篇
  1976年   4篇
  1975年   3篇
  1974年   3篇
  1973年   3篇
  1971年   5篇
  1969年   3篇
排序方式: 共有698条查询结果,搜索用时 0 毫秒
1.
We analyse the long-run and short-run relationship between merchandise export volume and its determinants, foreign income, relative prices and exchange rate volatility, using the techniques of cointegration and error correction. The model was estimated for Irish exports and sectoral exports SITC 0-4 and SITC 5-8 to the EU using quarterly data for the period 1978-1998. The sectoral classification corresponds to the exports of mainly indigenous Irish firms and multinationals, respectively. We find that the exchange rate volatility has no effect on the volume of trade in the short-run but a significant positive effect in the long run. This is true in the aggregate and for our sectoral classifications. We can tentatively conclude that the decline in intra-EU exchange rate volatility associated with the single currency will lead to a long-run fall in Irish exports to the EU.  相似文献   
2.
3.
This study attempts to infuse relationship marketing theory into the study of logistics outsourcing relationships. In particular, the study demonstrates that not all of the partnerships between customers and providers of third‐party logistics services are the same in terms of their level of development. The existence of distinct levels of partnership established previously in the logistics literature is partially supported and a relationship between level of partnership development and the customer perceptions of key relationship marketing elements and outcomes is established. While exploratory in nature, these findings suggest there are benefits for the increased costs of developing closer partnerships.  相似文献   
4.
If the volatility is stochastic, stock price returns and European option prices depend on the time average of the variance, i.e. the integrated variance, not on the path of the volatility. Applying a Bayesian statistical approach, we compute a forward-looking estimate of this variance, an option-implied integrated variance. Simultaneously, we obtain estimates of the correlation coefficient between stock price and volatility shocks, and of the parameters of the volatility process. Due to the convexity of the Black–Scholes formula with respect to the volatility, pricing and hedging with Black–Scholes-type formulas and the implied volatility often lead to inaccuracies if the volatility is stochastic. Theoretically, this problem can be avoided by using Hull–White-type option pricing and hedging formulas and the integrated variance. We use the implied integrated variance and Hull–White-type formulas to hedge European options and certain volatility derivatives.  相似文献   
5.
Water Resources in the Asia-Pacific Region: Managing Scarcity   总被引:1,自引:0,他引:1  
Irrigation, together with improved crop varieties and substantial growth in fertiliser use in the late 1960s through the early 1980s, was a key factor in stimulating strong agricultural growth in much of the Asia-Pacific region. New sources of water are increasingly expensive to exploit, but irrigation continues to be a major catalyst for agricultural growth. In the face of increasing degradation, the maintenance of the water resource base must be a high priority policy objective. This paper reviews the management of water resources in the Asia-Pacific region, for countries with significant irrigated area: Cambodia, China, Indonesia, Korea-DPR, Republic of Korea, Laos, Malaysia, Mongolia, Myanmar, Philippines, Thailand and Vietnam.  相似文献   
6.
Aims: To better understand the impact of the clinical course of multiple sclerosis (MS) and disability on employment, absenteeism, and related factors.

Materials and methods: This study included respondents to the North American Research Committee on Multiple Sclerosis Registry spring 2015 update survey who were US or Canadian residents, aged 18–65 years and reported having relapsing-remitting MS (RRMS), secondary progressive MS (SPMS), or primary progressive MS (PPMS). The RRMS and SPMS participants were combined to form the relapsing-onset MS (RMS) group and compared with the PPMS group regarding employment status, absenteeism, and disability. Multivariable logistic regression was used to examine the relationship between employment-related outcomes and factors that may affect these relationships.

Results: Of the 8004 survey respondents, 5887 (73.6%) were 18–65 years of age. The PPMS group (n?=?344) had a higher proportion of males and older mean age at the time of the survey and at time of diagnosis than the RMS group (n?=?4829). Female sex, age, age at diagnosis, cognitive and hand function impairment, fatigue, higher disability levels, ≥3 comorbidities, and a diagnosis of PPMS were associated with not working. After adjustment for disability, the employed PPMS sub-group reported similar levels of absenteeism to the employed RMS sub-group.

Limitations: Limitations of the study include self-report of information and the possibility that participants may not fully represent the working-age MS population.

Conclusions: In MS, employment status and absenteeism are negatively affected by disability, cognitive impairment, and fatigue. These findings underscore the need for therapies that prevent disability progression and other symptoms that negatively affect productivity in persons with MS to enable them to persist in the workforce.  相似文献   
7.
8.
Drawing on systems theory, we conducted a moderated meta‐analysis of the training and organisational performance relationship using 119 primary studies. We examined the moderating effects of quality versus quantity of training, time, institutional and organisational context factors in the relationship between training and organisational performance. Our findings reveal that training is positively and directly related to organisational performance with no statistically significant difference between measures of training quality and quantity. We found that the relationship was stronger over time and that country performance orientation and country labour cost moderate the training and organisational performance relationship. We found no evidence for the moderating effects of the three organisational context moderators we examined (i.e. industry sector, organisational size and technology intensity). Finally, our results reveal that training type (i.e. general or firm‐specific) does not moderate the training and organisational performance relationship.  相似文献   
9.
The study of welfare participation in the United States prior to the 1996 Welfare Reform Act and afterward has primarily focused on comparing native and immigrant households. Analyses that have gone beyond this broad classification have focused on comparisons across race, with particular focus on Hispanic immigrants. This paper moves away from the existing literature by investigating whether there is a difference in welfare usage among immigrant based on their birthplace. Using a probit model, we investigate this potential difference by testing two related hypotheses. Our results suggest that the probability of welfare usage for immigrants with similar characteristic, differ for some immigrant groups. We also find that for some immigrant groups, citizen and noncitizens differ with respect to welfare usage.  相似文献   
10.
  • The museum sector has undergone considerable change in the last few decades, which has been a result of both internal and external forces. The topic of pricing in museums, however, has attracted little interest from researchers in the field despite the sector's need to understand it better. This study aimed to address this gap in knowledge. Results of a comprehensive literature review on pricing highlight that the topic of pricing in museums is problematic, as a range of issues, social, political and often value-laden, must be considered before pricing decisions can be made. The study highlights that there is diversity in the sector with regard to pricing, but that museums generally adopt a unilateral approach to pricing. Researchers in entrepreneurial marketing have noted that conventional pricing theory is being turned on its head and they argue that deciding what prices to charge represents one of the more entrepreneurial strategies for organisations. This study indicates that, within the context of museums, marketers are failing to recognise and capitalise on such pricing opportunities. Approaches to setting multiple museum pricing strategies, depending on the market context, are proposed in this paper. In this way, knowledge of museum pricing can optimise the organisational outcomes of museums while continuing to meet their social responsibilities.
Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号