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   1514篇
  免费   73篇
  国内免费   1篇
财政金融   260篇
工业经济   100篇
计划管理   271篇
经济学   445篇
综合类   9篇
运输经济   16篇
旅游经济   17篇
贸易经济   316篇
农业经济   52篇
经济概况   95篇
邮电经济   7篇
  2024年   2篇
  2023年   27篇
  2022年   13篇
  2021年   42篇
  2020年   57篇
  2019年   87篇
  2018年   79篇
  2017年   75篇
  2016年   73篇
  2015年   47篇
  2014年   80篇
  2013年   184篇
  2012年   91篇
  2011年   77篇
  2010年   74篇
  2009年   78篇
  2008年   82篇
  2007年   39篇
  2006年   35篇
  2005年   23篇
  2004年   32篇
  2003年   40篇
  2002年   29篇
  2001年   29篇
  2000年   14篇
  1999年   21篇
  1998年   15篇
  1997年   8篇
  1996年   21篇
  1995年   18篇
  1994年   8篇
  1993年   5篇
  1992年   6篇
  1991年   6篇
  1990年   5篇
  1989年   5篇
  1988年   4篇
  1987年   2篇
  1986年   3篇
  1985年   7篇
  1984年   6篇
  1983年   2篇
  1982年   9篇
  1981年   4篇
  1980年   5篇
  1979年   6篇
  1978年   3篇
  1977年   2篇
  1976年   2篇
  1975年   2篇
排序方式: 共有1588条查询结果,搜索用时 595 毫秒
51.
52.
Gastronomic events are an important part of the “Made in Italy” and a vital tool for rural development. The aim of the study is to identify the complexity of the factors that determine the success of a food event. The authors, after state-of-the-art analysis of the event marketing, formulate the hypothesis of a causal model and form a data collection during the “open oil mills” in the Umbria region. Through in-depth interviews the participants were asked to express themselves about the importance and interest attributed to some aspects directly related to the theme of the event, and finally to indicate the degree of satisfaction and the likelihood of some of their future behavior. Statistical analysis based on structural equation models allowed the authors to highlight which aspects are significant in order to confirm the assumptions made. Results provide guidance for management decisions and organization of food and wine.  相似文献   
53.
Social cooperatives represent the most notable form of non‐profit organizations operating in Italy in the social services field, the birth and development of which has been strongly linked to, and conditioned by, the needs and resources of territories and communities. This paper intends to demonstrate how certain socio‐economic factors, recognized in economic literature as antecedents of the development of social enterprises, may account for the spread of social cooperatives in different Italian regions. Furthermore, the research results demonstrate an inter‐regional differentiation of the shape social cooperation has entered into in Italy.  相似文献   
54.
This paper presents two views of the European sovereign debt crisis. The first is that countries in the South of the Eurozone were fiscally irresponsible and failed to implement pro-competitive supply side policies. The second view holds that the crisis reflects a deep divide between the external surpluses of the North and external deficits of the South. Basic stylized facts cast doubt on the explanation based on the first thesis alone. A relatively simple model shows how poor fundamentals can create a debt problem independently of fiscal responsibility. The empirical analysis of the determinants of government bond yield spreads relative to Germany suggests that both views in fact provide useful insights into the roots of the current sovereign crisis. However, differences in growth and competitiveness and capital flows between North and South have assumed a much more dominant role since the onset of the global crisis.  相似文献   
55.
ABSTRACT: The Europeanization of public services is frequently considered to have created pressure for Member States to progressively converge towards a new dominant organizational model, based on deregulation, de‐integration and privatization. However, while in some sectors European directives played a crucial role in boosting a common evolutionary path, in other cases, mainly related to local public services, this influence remained feeble and more uncertain. The empirical insight on EU Local Public Transport Services carried out in this paper aims at investigating if and to what extent this new dominant paradigm actually emerges, or if and to what extent more fragmented and heterogeneous outcomes prevail. The main outcome is that the public role in Local Public Transport is still widespread and that a major theoretical and analytical focus should be directed to the ability of the principal‐competent public administration to play its role in an effective and sound manner, while often too much attention is paid to the characteristics of the agent‐operator (public‐private, big or small, foreign or national, etc.).  相似文献   
56.
Since health tourism is one of the most popular and most dynamically developing products of modern tourism, this paper aims at studying the characteristic features of health tourism destinations from a regional and spatial perspective. Accordingly, the authors would like to introduce a new approach of spatial and product analysis of tourism where the market and spatial relations and relevance of health tourism were analysed through the example of Hungary. Although the classic medical tourism centres were established on natural medical water basis, by today, due to product diversification, continuous innovation and the involvement of medical services into health tourism, the geographical embeddedness seems to disappear, thus basically restructuring the market. The methodological novelty of the research is that exceeding the classic supply–demand algorithm, we compiled a complex viewpoint system adequate to the specialities of the given product characteristics. In our study, the authors intend to survey the special characteristics of health tourism focusing on medical destinations through Hungarian examples since the country's leading position in the global market is well recognized, including medical services. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
57.
Setting the right approach for new product development (NPD) in the presence of uncertainty remains an ongoing debate in innovation management. Stage-gate systems (SGS) and agile methodology (AM) are the dominant approaches. Recently, hybrid approaches (combining SGS and AM) have been proposed. Although these hybrid approaches represent a significant development in NPD, combining them without considering their design principles might lead to contradictory and competing conceptual formulations, thus increasing the difficulty of comparison among studies. Moreover, scholars and practitioners may struggle to understand when, why and how a certain configuration of the NPD process provides the right response to different manifestations of uncertainty. The current literature faces problems regarding the clarity of design principles (e.g. flexibility and adaptability), and this has led to research gaps concerning the uncertainty contingency and outcomes of hybrid approaches. This study combines bibliometric and content analyses to identify four design parameters and principles of NPD hybrid approaches: flexibility, adaptability, velocity and integration. Our findings might help advance the development and comparison of different hybrid approaches.  相似文献   
58.
In this paper we propose two efficient techniques which allow one to compute the price of American basket options. In particular, we consider a basket of assets that follow a multi-dimensional Black–Scholes dynamics. The proposed techniques, called GPR Tree (GRP-Tree) and GPR Exact Integration (GPR-EI), are both based on Machine Learning, exploited together with binomial trees or with a closed form formula for integration. Moreover, these two methods solve the backward dynamic programing problem considering a Bermudan approximation of the American option. On the exercise dates, the value of the option is first computed as the maximum between the exercise value and the continuation value and then approximated by means of Gaussian Process Regression. The two methods mainly differ in the approach used to compute the continuation value: a single step of the binomial tree or integration according to the probability density of the process. Numerical results show that these two methods are accurate and reliable in handling American options on very large baskets of assets. Moreover we also consider the rough Bergomi model, which provides stochastic volatility with memory. Despite that this model is only bidimensional, the whole history of the process impacts on the price, and how to handle all this information is not obvious at all. To this aim, we present how to adapt the GPR-Tree and GPR-EI methods and we focus on pricing American options in this non-Markovian framework.  相似文献   
59.
60.
We investigate the impact of news in the ECB and FED monetary policy announcements on daily changes in Euro interest rates. We document significant impacts of ECB announcements throughout the period but only until mid 2004 of FED announcements.  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