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   135407篇
  免费   3683篇
  国内免费   1篇
财政金融   25541篇
工业经济   11546篇
计划管理   21594篇
经济学   29011篇
综合类   1448篇
运输经济   955篇
旅游经济   2480篇
贸易经济   23335篇
农业经济   6084篇
经济概况   16849篇
信息产业经济   7篇
邮电经济   241篇
  2021年   827篇
  2020年   1626篇
  2019年   2368篇
  2018年   2298篇
  2017年   2483篇
  2016年   2652篇
  2015年   2078篇
  2014年   3393篇
  2013年   15233篇
  2012年   4177篇
  2011年   4086篇
  2010年   3651篇
  2009年   4286篇
  2008年   3851篇
  2007年   3183篇
  2006年   3531篇
  2005年   3530篇
  2004年   3069篇
  2003年   2853篇
  2002年   2822篇
  2001年   2630篇
  2000年   2588篇
  1999年   2449篇
  1998年   2307篇
  1997年   2354篇
  1996年   2196篇
  1995年   2025篇
  1994年   2029篇
  1993年   2006篇
  1992年   2044篇
  1991年   1944篇
  1990年   1818篇
  1989年   1680篇
  1988年   1610篇
  1987年   1609篇
  1986年   1691篇
  1985年   2450篇
  1984年   2332篇
  1983年   2123篇
  1982年   1988篇
  1981年   1924篇
  1980年   1901篇
  1979年   1823篇
  1978年   1630篇
  1977年   1624篇
  1976年   1377篇
  1975年   1271篇
  1974年   1187篇
  1973年   1183篇
  1972年   896篇
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
991.
Prior to the sixteenth century, the Indian Ocean trading network was one of the wealthiest commercial regions in the world. It included states of East Africa, the Arabian peninsula, the Indian subcontinent, Southeast Asia, China and Japan. By circumnavigating Africa, Portugal was the first European nation to gain access to the region. Through the exercise of naval superiority, blockading of strategic shipping lanes, imposition of duties and expulsion of Swahili and Muslim merchants, Portugal exercised a mercantile monopoly which ultimately led to the region’s rapid economic decline. Using rare historical documents from Po rtugal and Africa, this study traces the effects of Portuguese expansion on the economies of East Africa and trade in the Indian Ocean.  相似文献   
992.
The further integration of the European Community (EC) is intended to create one large, integrated market and a semistandardized business environment throughout the member countries. This study investigates the current status of the technology licensing environment in the EC and analyzes the returns that a licensor can achieve by locating a licensee in each of the EC countries. This analysis may be important to any firm which has chosen a licensing strategy as its approach to operating in the EC, because locational choice of licensee can affect a licensor's financial returns.  相似文献   
993.
994.
Practice rights legislation in Canada continues to be contested 50 years after its first enactment. In Ontario, one of the earliest provinces to enact restrictive legislation, the challenges have focused on how the legislation has been implemented rather than on whether or not public accounting should be regulated. To better understand the contested issues in this field, we examine the process undertaken by the Public Accountants Council of Ontario to implement the Public Accountancy Act of 1950. Our analysis is based on the first 15 years of the minutes of the meetings of the Public Accountants Council for Ontario, augmented by other archival sources such as court cases, newspaper clippings, correspondence and reports. Our intent is to document the process and “logic of appropriateness” used by the Council to construct its identity and stake out its “regulatory space” in the face of the ambiguity of the law and pressure from interest groups. We also identify the contradictions that were institutionalized in this field resulting in repeated challenges to the Council. We conclude by relating the historical insights from this analysis to the continuing challenges to practice rights legislation in Ontario.  相似文献   
995.
We examine the spillover wealth effects of the Orange County, California bankruptcy announcement in December 1994 on municipal bonds, municipal bond funds, and bank stocks. This bankruptcy is prominent because of unprecedented losses and because it was caused by a highly leveraged derivatives strategy rather than a shortage of tax revenues and excess spending. We find contagion in the bond market with significantly negative abnormal returns for municipal bond funds without direct exposure to Orange County and for non‐Orange County municipal bonds. In addition, our findings suggest the contagion spills over to the common stocks of investment and commercial banks that deal in or use derivatives; however, the equities of banks unexposed to derivatives are not affected.  相似文献   
996.
This paper addresses Ravi Batra’s (2002 ) criticism of the basic comparative advantage gains‐from‐trade model. While Batra’s criticism is based on the selection view interpretation of real income, the gains from trade can only be properly understood from the options view interpretation of real income. I also show how a recent empirical implementation of the gains‐from‐trade model defies Batra’s claim that “the consumption gain . . . is not subject to measurement” (2002, p. 642).  相似文献   
997.
Term Premia and Interest Rate Forecasts in Affine Models   总被引:24,自引:0,他引:24  
The standard class of affine models produces poor forecasts of future Treasury yields. Better forecasts are generated by assuming that yields follow random walks. The failure of these models is driven by one of their key features: Compensation for risk is a multiple of the variance of the risk. Thus risk compensation cannot vary independently of interest rate volatility. I also describe a broader class of models. These "essentially affine" models retain the tractability of standard models, but allow compensation for interest rate risk to vary independently of interest rate volatility. This additional flexibility proves useful in forecasting future yields.  相似文献   
998.
999.
This paper formulates a new generation of Lowry-style models that combine a multizonal input-output model and an urban land use allocation model. Three different types of models are proposed: 1) an unconstrained model, 2) a primal of a linear programming approach that includes land supply constraints, and 3) a modified dual of the linear programming approach that allocates land based on additional conditions of economic efficiency. The modified dual formulation improves upon the limitations of Lowry models and their derivatives. First, the proposed model has sound theoretical underpinnings that incorporate the production theory of input-output models and the behavioral theory of optimization models. Second, the proposed model allocates land on the basis of economic efficiency by imposing a procedure that equalizes shadow prices. And third, the proposed model is an optimization model that fully accounts for the spatial and sectoral relationships of multiplier effects determining land use demand.  相似文献   
1000.
Indian industry is under pricing pressure after the government cut tariffs in a phased manner as per the WTO agreements. In order to be competitive, the consensus opinion in government, academics and industry is the implementation of a VAT in India. The paper evaluates the welfare implications of a VAT in the static and a sequentially dynamic context after accounting for the political and administrative constraints facing the Indian government in implementing a VAT. Replacing the old indirect tax structure with a VAT is welfare worsening. The increase in final consumer prices on account of reduced tax base leads to higher price of essentials, causing welfare loss. Zero rating v/s exemption plays an important role on welfare, with lower welfare loss if essential commodities are exempt from VAT. Agriculture sector unambiguously plays a crucial role in welfare.  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