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   33467篇
  免费   921篇
  国内免费   628篇
财政金融   2218篇
工业经济   2302篇
计划管理   13738篇
经济学   3015篇
综合类   3925篇
运输经济   415篇
旅游经济   781篇
贸易经济   3883篇
农业经济   2144篇
经济概况   2594篇
信息产业经济   1篇
  2024年   36篇
  2023年   275篇
  2022年   399篇
  2021年   827篇
  2020年   805篇
  2019年   484篇
  2018年   455篇
  2017年   583篇
  2016年   614篇
  2015年   973篇
  2014年   2762篇
  2013年   3152篇
  2012年   2982篇
  2011年   3750篇
  2010年   2848篇
  2009年   2057篇
  2008年   2312篇
  2007年   2080篇
  2006年   2089篇
  2005年   1633篇
  2004年   1187篇
  2003年   863篇
  2002年   557篇
  2001年   440篇
  2000年   317篇
  1999年   168篇
  1998年   98篇
  1997年   70篇
  1996年   56篇
  1995年   34篇
  1994年   23篇
  1993年   17篇
  1992年   7篇
  1991年   9篇
  1990年   6篇
  1989年   5篇
  1988年   7篇
  1987年   3篇
  1986年   1篇
  1985年   7篇
  1984年   7篇
  1983年   8篇
  1982年   3篇
  1981年   1篇
  1980年   5篇
  1978年   1篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Venice is one of the most popular tourist destinations in the world. In Venice, as in other middle-sized heritage European cities, strong tourism pressure is trapping the city in a vicious circle that is eroding the quality of its tourism attractions. This development is related to the growing numbers of excursionists who lack the time to make informed decisions about the quality of goods. Consequently, suppliers reduce the quality of their offerings and instead focus on market share. Consumer-generated media (CGM) may help resist this development by providing excursionists with aggregated, up-to-date information on the quality of tourism offerings as perceived by customers. In this paper, we investigate the efficiency of TripAdvisor in helping tourists to make informed decisions and in increasing the popularity of restaurants offering a higher expected quality. Our findings suggest that, although TripAdvisor's algorithm is designed to reward quality, it does not adequately meet these goals.  相似文献   
992.
由于专业设置和未来就业领域与钱、权、法的密切联系,使得经济管理类院校廉洁文化建设显得尤为重要。当下经济管理类院校的校园廉洁文化建设既面临挑战,又充满机遇。要充分利用经济管理类院校的一系列特点与优势,引领高校廉洁文化建设的新风尚。  相似文献   
993.
任晓博 《价值工程》2015,(6):231-232
本文论述了小浪底管理信息系统的建设原则及目标,详述了P3软件在小浪底管理工作中的具体应用,同时探讨了小浪底管理信息系统的可靠性以及项目风险识别、风险量化、风险控制等内容。  相似文献   
994.
张锋 《价值工程》2015,(7):60-61
进入现代社会,企业之间的竞争日益激烈,而要想在激烈的市场竞争中站稳脚跟,就必须加强企业的人才储备。本文对人才留用机制的建设和人力资源管理方面提出一些意见和建议以供参考。  相似文献   
995.
本文分析了土木工程实训室建设的现状,探讨了"教学做"一体化实训室建设的措施,并预测了"教学做"一体化实训室的实训效果。  相似文献   
996.
水利工程是国民经济建设过程中非常重要的建设内容,能够为人们的生产生活提供极大的便利,这就需要保证水利工程测量工作的准确性。在水利工程测量过程中,常用的测量工具就是全站仪,做好其误差分析与精度控制工作是非常必要的,本文就主要针对此予以简单分析。  相似文献   
997.
The article appraises the outcome of promoting tourism as a strategy for heritage conservation in the case of Murshidabad, an archetypal historic town in decline in India. A relational maturity-based framework has been used to examine the complementarities and conflicts between tourism and heritage conservation in the town. The prevailing nature of tourism conservation relationship in Murshidabad upholds the criticality characteristically observed in developing countries, where governments focus primarily on the revenue generating potential of built-heritage centric tourism ignoring the conservation attention necessary to retain authenticity and meaningful existence of historic structures. The overarching issues emerging from the current level of relational maturity in Murshidabad are identified with suggestions for possible policy implications of the study.  相似文献   
998.
We present the results of flight simulator experiments (60 runs) with randomly selected airline pilots under realistic operational conditions and discuss them in light of current fuel regulations and potential fuel starvation. The experiments were conducted to assess flight crew performance in handling complex technical malfunctions including decision-making in fourth-generation jet aircraft. Our analysis shows that the current fuel requirements of the European Aviation Safety Agency (EASA) are not sufficient to guarantee the safety target of the Advisory Council for Aviation Research and Innovation in Europe (ACARE), which is less than one accident in 10 million flights. To comply with this safety target, we recommend increasing the Final Reserve Fuel from 30 min to 45 min for jet aircraft. The minimum dispatched fuel upon landing should be at least 1 h.  相似文献   
999.
In the Ming and Qing Dynasties (1368–1911), China saw rapid development in industrial and commercial sectors. Over this period, a group of merchants originating from the inland province of Shanxi gradually built a multilevel financial system and became leaders in China’s banking sector. The system of financial institutions they established (pawnshops, seal shops, money shops, loan banks, and draft banks) each had a unique business model, with specific target client group and carefully designed risk management. They were also interconnected to allow for flexible capital flows, contributing to the fast economic growth in this period. Nevertheless, the traditional system also had limitations, leading to its replacement by modern banks eventually.  相似文献   
1000.
This research work analyzes the yields of the exchange rate parities of the American dollar, Canadian dollar, Euro, and Yen; estimates the basic statistics and the α-stables; carries out the Kolmogorov–Smirnov, Anderson–Darling, and Lilliefors goodness of fit tests; estimates the self-similar exponents and carries out the t and F tests, ruling out that the series of parities are multifractal. It also estimates the confidence intervals of the exchange rate parities and concludes that the estimated α-stable distributions are more efficient than the Gaussian distribution to quantify the risks of the market, and that the series are self-similar. Through the ? index, we can infer the risk of the events, indicating that the parities are anti-persistent and thus have short-term memory, mean reversion, and a negative correlation with the high risk in the short and medium term. The estimation and validation of the α-stable distributions and the self-similar exponent are important in the evaluation and creation of innovative investment instruments through financial engineering, risk administration, and the evaluation of derived products.  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