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   3831篇
  免费   157篇
  国内免费   1篇
财政金融   619篇
工业经济   276篇
计划管理   729篇
经济学   867篇
综合类   49篇
运输经济   33篇
旅游经济   30篇
贸易经济   684篇
农业经济   129篇
经济概况   546篇
邮电经济   27篇
  2023年   23篇
  2022年   25篇
  2021年   43篇
  2020年   76篇
  2019年   106篇
  2018年   120篇
  2017年   124篇
  2016年   135篇
  2015年   74篇
  2014年   131篇
  2013年   492篇
  2012年   169篇
  2011年   159篇
  2010年   164篇
  2009年   171篇
  2008年   167篇
  2007年   152篇
  2006年   143篇
  2005年   121篇
  2004年   103篇
  2003年   105篇
  2002年   100篇
  2001年   71篇
  2000年   59篇
  1999年   59篇
  1998年   49篇
  1997年   53篇
  1996年   43篇
  1995年   32篇
  1994年   30篇
  1993年   41篇
  1992年   35篇
  1991年   36篇
  1990年   25篇
  1989年   24篇
  1988年   21篇
  1987年   21篇
  1986年   17篇
  1985年   29篇
  1984年   35篇
  1983年   22篇
  1982年   29篇
  1981年   32篇
  1980年   20篇
  1979年   27篇
  1978年   18篇
  1977年   36篇
  1976年   13篇
  1975年   13篇
  1973年   15篇
排序方式: 共有3989条查询结果,搜索用时 31 毫秒
181.
Previous studies have indicated that travel satisfaction - the experienced emotions during, and cognitive evaluation of, a trip - can be affected by travel mode choice and other trip characteristics. However, as satisfactory trips might improve a person's attitude towards the used mode, persons may be more likely to use that same mode for future trips of the same kind. Hence, a cyclical process between travel mode choice and travel satisfaction might occur. In this paper we begin to analyse this process—using a structural equation modelling approach on cross-sectional data—for people who engage in walking and cycling for leisure trips in the Belgian city of Ghent. The focus on walking and cycling reflects recent studies indicating that active travel is often associated with the highest levels of travel satisfaction. Results of this exploratory analysis offer tentative support for the idea of a cyclical process: the evaluation of walking and cycling trips positively affects the respondents' attitude towards the respective mode, which in turn has a positive effect on choosing that mode.  相似文献   
182.
As has been seen in other contexts, workers in similar occupations earned much higher wages in Canada than Europe during the 1920s. This observation and related aspects of immigration are addressed with a life-cycle model of the migration decision. The characteristics of immigrants from five European countries: Ireland, Italy, the Netherlands, Poland, and Sweden, are explored in a way that sheds light not just on those population flows but on the process of immigration generally. We draw on passenger manifests from immigrant ships for information on the individual migrants. Simulations, based partly on the these manifests, reveal that the costs of migration, borrowing constraints, concern for status, and country-specific taste preferences account for key immigrant characteristics, and help explain the large wage differentials that persisted despite Canada’s relatively open immigration policy.  相似文献   
183.
The authors examine antecedents and consequences of environmental stewardship in frontline business-to-business teams. On the basis of data from members of 34 teams organized into regional networks, they demonstrate the differential impact of team environmental stewardship on customer satisfaction ratings and sales. Furthermore, the results reveal lagged individual-level effects of autonomy and supervisory support on environmental stewardship, as well as lagged group-level effects of past performance. Finally, dispersion models of team stewardship differentially moderate antecedent–stewardship relationships. Whereas within-team consensus strengthens the impact of past satisfaction ratings on subsequent stewardship, between-team consensus weakens the negative impact of past sales.  相似文献   
184.
一个地区的资源禀赋影响该地区承接产业转移的能力。对中国中部地区的湖南、湖北、江西、山西、安徽、河南(这六个省简称为“中部六省”)的资源禀赋进行分析,测算作为产业接收地的中部六省承接产业转移的能力,要测算的能力包括在投资环境、自然资源、交通便捷、技术创新、劳动力成本等五个要素上表现出的单项能力及其综合能力。从产业集聚指数视角,分析上海、江苏、浙江、福建、广东(这五个省市简称为“沪苏浙闽粤五省市)当前产业发展格局,得出这五个省市那些具有产业转移趋势的产业分布范围。通过建构产业吸引力指数,分别计算中部六省和沪苏浙闽粤五省市之间的产业吸引力。从工业细分行业方面,横向对比分析中部六省在对沪苏浙闽粤五省市产业转移的承接当中,确定产业接收范围,以及接收的产业将如何分布。着重以湖南省为典型案例,分析该省在承接产业转移当中存在的主要问题,测算该省在承接来自于沪苏浙闽粤五省市的产业转移当中,能够承接的产业领域和产业分布范围,并从招商环境、产业集群、企业自主创新、产业承接政策等方面,对该省承接产业转移提出对策与建议。  相似文献   
185.
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   
186.
论旅游学研究的对象和任务   总被引:1,自引:0,他引:1  
从旅游学产生的历史和旅游学理论体系的内容两个角度对旅游学的研究对象进行了分析研究,认为旅游学的研究对象就是旅游活动和旅游业,其中又以旅游的三要素——旅游主体、旅游客体、旅游媒体及其相互关系为核心。其任务是找出对旅游活动和旅游业发展的规律性认识,对旅游实践活动起到理论上的指导作用  相似文献   
187.
This paper proposes a system of tradable Water Saving Certificates to improve the efficiency of water allocation between Drinking Water Utilities at river basin level. A market institutional set‐up, inspired from recent policy developments in the energy sector, is proposed. An original analytical price‐endogenous model is developed to simulate trade intensity, equilibrium price and efficiency gains in this urban water market. The economic model is implemented in a French case study using mathematical programming. It is used for conducting an ex‐ante evaluation of trade possibilities and efficiency gains, considering different spatial restrictions aimed at controlling environmental externalities. Our modelling exercise provides evidence of the benefits of the proposed Water Saving Certificate scheme.  相似文献   
188.
This paper investigates conflicts following a new product development (NPD) failure. Conducted in a Chinese business setting, the study examines whether voice behaviour and learning from failure mediate the relationship between task- and emotional conflict emerging from NPD failure. Our findings indicate that voice behaviour and learning from failure are necessary to effectively reduce task and emotional conflict and thus to enhance future NPD. Specifically, it is revealed that emotional conflict leads to a reduced level; and that voice behaviour and learning from failure are significant mediators that influences the relationships between emotional and task conflicts with it.  相似文献   
189.
Aflatoxins are a common health hazard in tropical countries, especially in rural areas. New methods to reduce aflatoxin levels in food staples, as well as cheaper test methods, are being developed, but consumers’ willingness to pay (WTP) for these improvements is unknown. A survey was conducted with a representative sample of rural consumers (1,344 in total, 63% women) in all major maize‐production zones of Kenya. The survey included an experimental auction with maize products of different qualities. The results showed that many rural consumers were aware of aflatoxins, but few understood their health risks. Respondents were willing to pay a premium for maize tested for aflatoxins and labeled, but asked a high discount for maize that was visibly contaminated with moldy grain. The premium was higher for respondents with education and in regions with aflatoxicosis outbreaks. Knowledge of aflatoxins substantially reduced the overall WTP, but did not increase the WTP for tested maize. Welfare analysis indicates that mandatory testing would result in substantial benefits if the cost of testing can be lowered to below the premium.  相似文献   
190.
It is well known that the price of a food in general and fish in particular is a function of a number of attributes such as species, product form, processing form and size. However, limited attention has been given to the influence of private labels, production method, eco‐labels and promotions. We use a unique dataset which identifies these attributes in the German seafood market. We estimate a hedonic price function, and our results highlight the importance of brand and labels for seafood prices in Germany. Our results also suggest that private label products are discounted by 20%, while branded products achieve substantial price premiums, as do fish products from aquaculture.  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