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   135319篇
  免费   3783篇
  国内免费   2篇
财政金融   25818篇
工业经济   11294篇
计划管理   21709篇
经济学   29238篇
综合类   1467篇
运输经济   961篇
旅游经济   2488篇
贸易经济   22803篇
农业经济   6134篇
经济概况   16944篇
信息产业经济   8篇
邮电经济   240篇
  2021年   829篇
  2020年   1613篇
  2019年   2381篇
  2018年   2372篇
  2017年   2534篇
  2016年   2725篇
  2015年   2077篇
  2014年   3387篇
  2013年   15235篇
  2012年   4204篇
  2011年   4223篇
  2010年   3749篇
  2009年   4350篇
  2008年   3935篇
  2007年   3286篇
  2006年   3584篇
  2005年   3573篇
  2004年   3134篇
  2003年   2895篇
  2002年   2866篇
  2001年   2627篇
  2000年   2569篇
  1999年   2465篇
  1998年   2299篇
  1997年   2356篇
  1996年   2225篇
  1995年   2016篇
  1994年   2029篇
  1993年   2023篇
  1992年   2076篇
  1991年   1963篇
  1990年   1835篇
  1989年   1617篇
  1988年   1516篇
  1987年   1530篇
  1986年   1617篇
  1985年   2379篇
  1984年   2248篇
  1983年   2057篇
  1982年   1912篇
  1981年   1900篇
  1980年   1875篇
  1979年   1773篇
  1978年   1613篇
  1977年   1594篇
  1976年   1359篇
  1975年   1250篇
  1974年   1162篇
  1973年   1149篇
  1972年   863篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
151.
152.
153.
In the UK, 1950-75 was a lively period in the long-running debates between proponents of absorption and marginal costing. In the nexus of competing interests, management accountants advocated and defended rival costing systems with much vigour and passion. Expressed in the language of the times, these debates were 'battles' in the costing 'war'. We focus on these battles, analysing the various forces that operated upon the combatants, and locate them in the wider costing war. We conclude that no final resolution of the conflict was achieved in the twentieth century, nor is one likely in the foreseeable future.  相似文献   
154.
This article tests three common budgetary decision–making theories in the US states. Pooled time series cross–section analysis is used from 1960 to 1996 to test the garbage can theory and incrementalism, and from 1989 to 1996 to test various theories of rational budgeting. The results demonstrate that there was some support for all three theories in terms of their impact on reducing state budget outputs. Rational budgeting reduces expenditures in aggregate, incrementalism has relatively low explanatory power below the aggregates, and garbage can budgeting is more prevalent in functional areas than for government as a whole. These findings imply that the future research agenda on budgetary decision–making theories should focus more on a system–wide approach, which takes into account many of the characteristics of all three rival models of decision–making, rather than exclusively focusing on each one singly.  相似文献   
155.
156.
The effects of competitive interactions on investment decisionsand on the dynamics of the price of a nonstorable commodityare studied in a model of incremental investment with time tobuild and operating flexibility. I find that an increase inuncertainty may encourage firms to increase their capacity.Furthermore, I show that it may be optimal to invest in additionalcapacity during periods in which part of the operational capacityis not being utilized. The impact of competition on the propertiesof the endogenous output price is dramatic. For example, I findthat price volatility may be increasing in the number of competitorsin the industry.  相似文献   
157.
The paper examines the relationship between transitory terms‐of‐trade shocks and private saving. Using a model allowing for nonseparability between the consumption of tradables and nontradables, the paper estimates the intertemporal elasticity of substitution while accounting for the intratemporal elasticity of substitution between the consumption of tradables and nontradables. Empirical analysis of data for five industrial countries indicates that in response to transitory terms‐of‐trade shocks, intertemporal substitution of consumption and intratemporal substitution of consumption between tradables and nontradables both have large effects on private saving.  相似文献   
158.
The American Psychological Association Task Force recommended that researchers always report and interpret effect sizes for quantitative data. However, no such recommendation was made for qualitative data. Thus, the first objective of the present paper is to provide a rationale for reporting and interpreting effect sizes in qualitative research. Arguments are presented that effect sizes enhance the process of verstehen/hermeneutics advocated by interpretive researchers. The second objective of this paper is to provide a typology of effect sizes in qualitative research. Examples are given illustrating various applications of effect sizes. For instance, when conducting typological analyses, qualitative analysts only identify emergent themes; yet, these themes can be quantitized to ascertain the hierarchical structure of emergent themes. The final objective is to illustrate how inferential statistics can be utilized in qualitative data analyses. This can be accomplished by treating words arising from individuals, or observations emerging from a particular setting, as sample units of data that represent the total number of words/observations existing from that sample member/context. Heuristic examples are provided to demonstrate how inferential statistics can be used to provide more complex levels of verstehen than is presently undertaken in qualitative research.  相似文献   
159.
160.
We consider the problem of estimating a probability density function based on data that are corrupted by noise from a uniform distribution. The (nonparametric) maximum likelihood estimator for the corresponding distribution function is well defined. For the density function this is not the case. We study two nonparametric estimators for this density. The first is a type of kernel density estimate based on the empirical distribution function of the observable data. The second is a kernel density estimate based on the MLE of the distribution function of the unobservable (uncorrupted) data.  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