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   4191篇
  免费   76篇
财政金融   906篇
工业经济   361篇
计划管理   649篇
经济学   881篇
综合类   82篇
运输经济   38篇
旅游经济   75篇
贸易经济   720篇
农业经济   195篇
经济概况   360篇
  2021年   17篇
  2020年   37篇
  2019年   65篇
  2018年   67篇
  2017年   77篇
  2016年   61篇
  2015年   49篇
  2014年   92篇
  2013年   504篇
  2012年   118篇
  2011年   106篇
  2010年   95篇
  2009年   117篇
  2008年   115篇
  2007年   116篇
  2006年   115篇
  2005年   105篇
  2004年   89篇
  2003年   109篇
  2002年   104篇
  2001年   93篇
  2000年   90篇
  1999年   97篇
  1998年   81篇
  1997年   71篇
  1996年   73篇
  1995年   63篇
  1994年   69篇
  1993年   53篇
  1992年   69篇
  1991年   65篇
  1990年   64篇
  1989年   64篇
  1988年   46篇
  1987年   57篇
  1986年   52篇
  1985年   94篇
  1984年   77篇
  1983年   77篇
  1982年   96篇
  1981年   79篇
  1980年   73篇
  1979年   62篇
  1978年   74篇
  1977年   62篇
  1976年   57篇
  1975年   49篇
  1974年   43篇
  1973年   38篇
  1971年   21篇
排序方式: 共有4267条查询结果,搜索用时 15 毫秒
101.
The key task in the next stage of spectrum management is to adapt regulation to the prospect of widespread sharing, on a much more sophisticated basis than sharing is used today. There is a role for the regulator to take steps to expand the area of choice within which public and private sector users can operate. This is best done in general by enhancing the flexibility of usage rights, which itself is best achieved by enhancing the freedom to trade them in the dimensions of time, space, level of interference and priority of access, by subdividing, re-aggregating, etc. However, there are considerable transactions cost impediments to trading where unlicensed users are involved. This creates a role for the regulator pro-actively to investigate different allocations, to make provisions for the most promising to occur and to incorporate both in refarming exercises and in primary assignments based on auctions configurations of usage rights, which might favour promising avenues of shared spectrum use.  相似文献   
102.
Green marketing and green supply chain have been drawing the attention of both academics and practitioners in the recent decade. However, no holistic framework has been developed on how to build green industrial brands and industrial corporate brands. Whether or not sustainable/green supply chains can be integrated with green industrial marketing in building greener organizations and industrial brands is still unclear. In addition, little is known on the factors on green new industrial product development or how green new industrial products are adopted by organizations. Furthermore, we know little of whether and how green supply chain enables green new industrial product development. This special issue aims at reflecting the most recent advances on green industrial marketing, green/sustainable supply chains and their interplay in green industrial branding, and to explore future research directions. The guest editors hope that the solicited papers can provide insights on the impacts of sustainable or green supply chains on marketing theory in industrial and business-to-business markets.  相似文献   
103.
This paper addresses two findings from the empirical literature testing uncovered interest parity (UIP): (i) more favorable results when interest differentials (IDs) are large and (ii) instability across samples. Simulations demonstrate that explanations of the results using large IDs based on the hypothesis of a “zone of speculative inactivity” are inconsistent with empirical evidence. Furthermore, it is shown that, if agents forecast IDs based on long-run values, coefficient estimates will be unstable if rates of decay in IDs vary significantly and, for ex post UIP to hold, IDs must decay in absolute value. This is consistent with OECD country data.  相似文献   
104.
We examine how different methods of reparations payments to African‐Americans affect both the black and nonblack populations of the United States using the framework of the transfer‐problem from international trade theory as a theoretical foundation. We find that reparations payments that provide incentives for blacks to use the payment toward purchases of goods and services produced by nonblacks might expand the income gap. Also a reparations payment in the absence of productive capacity owned by blacks is found to have no final positive impact on black income. These results indicate that a reparations payment strategy must be carefully and cautiously conceived in order to achieve the desired effects.  相似文献   
105.
Separate research streams have identified relationships between IJV autonomy and IJV effectiveness, and between functional/dysfunctional parent-company differentiation and IJV effectiveness. This study attempts to integrate these two literature streams by examining how these two sets of independent variables interact in terms of predicting IJV effectiveness. Results partially support our hypotheses that the autonomy-effectiveness relationship is less positive with greater functional differentiation and more positive with greater dysfunctional differentiation. The results provide strong support for our hypotheses that activities closer to the local operating environment will influence these relationships such that autonomy becomes more important to effectiveness when an activity has strong local ties.  相似文献   
106.
Undergraduate Coursework in Economics: A Survey Perspective   总被引:1,自引:0,他引:1  
Survey results from a large sample of economics departments describe offerings for principles courses, coursework requirements for economics majors, and program augmentations such as capstone courses, senior seminars, and honors programs. Findings are reported for all institutions, and institutions are subdivided into six different categories based on public or private control and the highest economics degree offered. The coursework required for the economics major typically consists of ten courses, five in a required core and five electives. The most conspicuous curriculum change over the past 30 years is the rise of econometrics as a required course, now mandatory at about half of major programs. The authors estimate that about 40 percent of students who matriculate as first-year undergraduates take at least one economics course before they leave.  相似文献   
107.
Hatfield and Milgrom [Hatfield, John William, Milgrom, Paul R., 2005. Matching with contracts. Amer. Econ. Rev. 95, 913–935] present a unified model of matching with contracts, which includes the standard two-sided matching and some package auction models as special cases. They show that the doctor-optimal stable mechanism is strategy-proof for doctors if hospitals' preferences satisfy substitutes and the law of aggregate demand. We show that the doctor-optimal stable mechanism is group strategy-proof for doctors under these same conditions. That is, no group of doctors can make each of its members strictly better off by jointly misreporting their preferences. We derive as a corollary of this result that no individually rational allocation is preferred by all the doctors to the doctor-optimal stable allocation.  相似文献   
108.
We present a dynamic model of the indigenous natural gas industry in the UK. The model has been built using a system dynamics approach. Using the model several scenarios have been analyzed. We found that management of the supply-side policy alone cannot substantially postpone the discovery, production and consumption peak. We also found that the dynamics of the main variables, namely, exploration, production and consumption, are sensitive to initial demand conditions. Postponing the onset of gas price increases can therefore be achieved more effectively through efforts to reduce demand growth. One might expect that a low taxation policy would encourage more exploration and production of gas and thereby stimulate higher consumption rates. Instead, there was no overall net effect on production and consumption in the long term. The depletion effect on cost of exploration acts as counterbalance to low taxation policy. Depletion effect causes cost and thus price to rise further which depress consumption rate. The advances in exploration and production technology can delay the peak of exploration, production and consumption. Technological improvements mean lower cost of exploration and production which pressure down the long-term pattern of price dynamics.  相似文献   
109.
A research agenda for improving national Ecological Footprint accounts   总被引:3,自引:0,他引:3  
Nation-level Ecological Footprint accounts are currently produced for more than 150 nations, with multiple calculations available for some nations. The data sets that result from these national assessments typically serve as the basis for Footprint calculations at smaller scales, including those for regions, cities, businesses, and individuals. Global Footprint Network's National Footprint Accounts, supported and used by more than 70 major organizations worldwide, contain the most widely used national accounting methodology today. The National Footprint Accounts calculations are undergoing continuous improvement as better data becomes available and new methodologies are developed. In this paper, a community of active Ecological Footprint practitioners and users propose key research priorities for improving national Ecological Footprint accounting. For each of the proposed improvements, we briefly review relevant literature, summarize the current state of debate, and suggest approaches for further development. The research agenda will serve as a reference for a large scale, international research program devoted to furthering the development of national Ecological Footprint accounting methodology.  相似文献   
110.
There exist legal channels for informational lobbying of US policymakers by foreign principals. Foreign governments and private sector principals frequently and intensively use this institutional channel to lobby on trade and tourism issues. This paper empirically studies whether such lobbying effectively achieves its goal of trade promotion in the context of Caribbean tourism, and suggests the potential for using foreign lobbying as a vehicle for development. Panel data are used to explore and quantify the association between foreign lobbying by Caribbean principals and US tourist arrivals to Caribbean destinations. A variety of sensitivity analyses support the finding of a strong association. The policy implications are obvious and potentially important for developing countries.  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