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   23005篇
  免费   625篇
财政金融   4081篇
工业经济   1623篇
计划管理   3967篇
经济学   5489篇
综合类   246篇
运输经济   178篇
旅游经济   342篇
贸易经济   3838篇
农业经济   1149篇
经济概况   2633篇
信息产业经济   3篇
邮电经济   81篇
  2023年   116篇
  2021年   153篇
  2020年   293篇
  2019年   467篇
  2018年   517篇
  2017年   537篇
  2016年   526篇
  2015年   361篇
  2014年   575篇
  2013年   2426篇
  2012年   791篇
  2011年   822篇
  2010年   708篇
  2009年   817篇
  2008年   743篇
  2007年   641篇
  2006年   618篇
  2005年   541篇
  2004年   473篇
  2003年   488篇
  2002年   426篇
  2001年   509篇
  2000年   465篇
  1999年   419篇
  1998年   475篇
  1997年   431篇
  1996年   428篇
  1995年   365篇
  1994年   372篇
  1993年   353篇
  1992年   363篇
  1991年   380篇
  1990年   345篇
  1989年   255篇
  1988年   264篇
  1987年   268篇
  1986年   248篇
  1985年   360篇
  1984年   357篇
  1983年   333篇
  1982年   287篇
  1981年   285篇
  1980年   285篇
  1979年   279篇
  1978年   226篇
  1977年   183篇
  1976年   183篇
  1975年   163篇
  1974年   150篇
  1973年   149篇
排序方式: 共有10000条查询结果,搜索用时 781 毫秒
141.
142.
143.
Statement of Financial Accounting Standards (SFAS) No. 96, “Accounting for Income Taxes,” issued by the Financial Accounting Standards Board (FASB) in December 1987 changed accounting for income tax recognition and accrual. The original deadline for implementation of SFAS No. 96 was December 15, 1988, and earlier adoption was encouraged. This study examines empirically the stock price impact of four pertinent announcement dates regarding SFAS No. 96 for 19 banks that adopted the statement in late 1987 and early 1988. Our results suggest that these early bank adopters have different characteristics from other banks that cause them to benefit from the changes in accounting for deferred taxes and explain their voluntary adoption of the standard.  相似文献   
144.
Asian developing countries have had varying experiences in trade and agricultural development in the 1980s, attributable in part to their differing stages of economic development and structural characteristics. Other important influences relate to the external economic environment and the policy choices made by their governments not only during the period but also in the preceding decade. The achievements of Asian developing countries under the adverse external conditions of the 1980s are discussed in terms of their macrocconomic and agricultural growth, the commodity structure of agricultural growth, their food production and trade, the expansion and diversification of their agricultural exports, and the policy and nonpolicy factors affecting them. Special attention is given to the role of policy reforms implemented in China and the South Asian countries, following similar policy developments in Northeast and Southeast Asia in the 1960s and 1970s, toward greater openness in their trade regime and increased private-sector participation in the economy. These reforms have contributed to the observed acceleration in gup , agricultural, and export growth in the 1980s. However, macroeconomic imbalances have emerged that threaten the sustainability of economic liberalization in those countries. The major challenges for the 1990s also differ among the Asian developing countries. In the industrially advanced Northeast economies of Taiwan and South Korea, the primary need is to ease the transition of the remaining rural population as farm incomes continue to fall and workers move to industrial and service activities. This challenge has to be addressed in the context of growing external pressure to further open their domestic market for agricultural imports. Among the Southeast and South Asian countries, there is a need to reduce the existing policy biases against agriculture, particularly against export crop production. Moreover, China and the South Asian countries face the additional challenges of continuing to deregulate their trade regime and internal markets, and of promoting macroeconomic stability. Despite the external trend recently toward regionalism, Asian developing countries generally seem committed to an open trading system, on which in fact their past impressive economic performance has been predicated. An important challenge for them in the 1990s is to play an active role in arresting and reversing any protectionist tendencies arising from the formation of regional trading blocs and to support multilateral initiatives such as the Uruguay Round that promote global trade liberalization.  相似文献   
145.
Reduced-form price spread models have been recently utilized by Wohlgenant and Mullen, and Thompson and Lyon to evaluate the economic factors affecting the marketing margins for agricultural products. Drawing on Gardner, Heien, Buse and Brandow, Waugh, Tomek and Robinson, and others they specify alternative retail-farm price spread models and attempt to determine which best fit the data in the context of underlying theoretical rationale. This paper continues in the spirit of Wohlgenant and Mullen, and Thompson and Lyon by evaluating alternative specifications of the retail-farm price spread for white maize in South Africa. However, several important differences do remain. Wohlgenant and Mullen analyzed the price spread for beef using annual data, while Thompson and Lyon modeled the price spread for oranges using weekly data. The time period under consideration can be expected to affect the choice of model because fixed markup rules that might be evident using a short-run period of analysis (e.g., Thompson and Lyon) become untenable over the long run with underlying supply and demand shifts. In this paper, monthly data, which may be interpreted as an intermediate-run period, are used along with dichotomous supply-demand shifters. In addition, Brorsen et. al. have shown that price uncertainty affects the price spread in the marketing channels of agricultural commodities. Thus, the analysis in this paper extends the framework of Wohlgenant and Mullen, and Thompson and Lyon to include measures of price risk. Finally, like Brorsen et. al. this study pertains to the grain market, while Wohlgenant and Mullen, and Thompson and Lyon studied the marketing margin for non-storable commodities.  相似文献   
146.
Great variation in nursing resource use is documented within DRGs. Much of this variation may be explained by patient severity of illness. Variance in nursing resource use within DRGs can be reduced by using a severity of illness instrument to score patients.  相似文献   
147.
148.
An extensive set of self-reported survey data exists on illegal drug use. The survey data show that drug use is quite frequent among the younger adult population, relatively infrequent among those of high-school age, and rare among middle-aged and older adults. Drug use varies by occupational category in ways that are difficult to rationalize. This study utilizes a model in which an individual's time is allocated among labor, non-drug consumption, leisure, and drug use, where the individual is cognizant of the effect of drug use on his wages. The study analyzes comparative static results and then uses data from the National Longitudinal Survey of Youth to estimate a probit model of the individual decision to use drugs. The findings of the study are that non-economic factors dominate the decision for both harder drugs and drugs more broadly defined. One must consider this finding tentative, however, since usable drug price data were not available.  相似文献   
149.
150.
Financial Accounting Standard (FAS) 133 requires business entities to document their anticipation of hedge effectiveness in order to qualify for hedge accounting treatment of gains and losses from financial derivatives. In the absence of specific guidelines, the accounting industry has espoused the "80–125" rule for determining hedge effectiveness. But the authors observe that meaningful assessment of anticipated hedge effectiveness must consider two distinct aspects of a firm's hedging strategy: (1) the strength of the hedging relationship, which is determined by the choice of the hedging instrument; and (2) the position taken in the hedging instrument relative to the holdings of the hedged item. They take both aspects of hedging into consideration in developing alternative measures of hedge effectiveness and distinguishing between the potential and attained effectiveness of a particular hedge. This approach enables the user to evaluate the relative merits of alternative hedging strategies to support risk management decisions, and also to document a selected hedging strategy's anticipated effectiveness for purposes of compliance with FAS 133. While the authors endorse a fairly broad interpretation of hedge effectiveness, their approach can also be used in the narrower context of an "80–125" rule.  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