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   10927篇
  免费   208篇
财政金融   2290篇
工业经济   790篇
计划管理   1730篇
经济学   2329篇
综合类   152篇
运输经济   66篇
旅游经济   198篇
贸易经济   1838篇
农业经济   365篇
经济概况   1371篇
邮电经济   6篇
  2020年   115篇
  2019年   172篇
  2018年   201篇
  2017年   219篇
  2016年   211篇
  2015年   144篇
  2014年   197篇
  2013年   1202篇
  2012年   281篇
  2011年   311篇
  2010年   289篇
  2009年   302篇
  2008年   286篇
  2007年   253篇
  2006年   253篇
  2005年   229篇
  2004年   229篇
  2003年   221篇
  2002年   234篇
  2001年   203篇
  2000年   200篇
  1999年   204篇
  1998年   220篇
  1997年   192篇
  1996年   189篇
  1995年   162篇
  1994年   160篇
  1993年   159篇
  1992年   193篇
  1991年   185篇
  1990年   133篇
  1989年   141篇
  1988年   116篇
  1987年   127篇
  1986年   144篇
  1985年   205篇
  1984年   177篇
  1983年   199篇
  1982年   168篇
  1981年   150篇
  1980年   174篇
  1979年   160篇
  1978年   126篇
  1977年   141篇
  1976年   125篇
  1975年   124篇
  1974年   122篇
  1973年   89篇
  1972年   77篇
  1971年   72篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
Through the development and extension of theories and scholars’ subsequent empirical analyses of significant, theoretically grounded research questions, the knowledge about corporate entrepreneurship (CE) and its successful use continues to advance. Moreover, the literature suggests important relationships between the corporate environment, managers’ entrepreneurial behavior and successful implementation of corporate entrepreneurship actions. In an attempt to test some of those relationships, we describe an empirical study of 523 managers that examines the relationships among the antecedents to managers’ entrepreneurial behavior, a decision to implement entrepreneurial actions, and resulting job satisfaction and reinforcement practices.  相似文献   
994.
Information systems are a kind of service systems and they are throughout every element of a modern industrial and business system, much like blood in our body. Types of information systems are heterogeneous because of extreme uncertainty in changes in modern industrial and business systems. To effectively manage information systems, modelling of the work domain (or domain) of information systems is necessary. In this paper, a domain modelling framework for the service system is proposed and its application to the enterprise information system is outlined. The framework is defined based on application of a general domain modelling tool called function-context-behaviour-principle-state-structure (FCBPSS). The FCBPSS is based on a set of core concepts, namely: function, context, behaviour, principle, state and structure and system decomposition. Different from many other applications of FCBPSS in systems engineering, the FCBPSS is applied to both infrastructure and substance systems, which is novel and effective to modelling of service systems including enterprise information systems. It is to be noted that domain modelling of systems (e.g. enterprise information systems) is a key to integration of heterogeneous systems and to coping with unanticipated situations facing to systems.  相似文献   
995.
996.
The purpose here is to elaborate on the social fabric matrix approach (SFM‐A), and to assess the possibility of integrating it with the social structure of accumulation and the social accounting matrix.The SFM‐A to analysis and policy evaluation allows for cultural values, social beliefs, institutions, attitudes, technology, and the ecological system to be modeled into a system. The guiding goal is to work toward a more complete model of the provisioning process.  相似文献   
997.
This study examines the relevance of financial and non-financial information for the valuation of venture capital (VC) investments. Based on a hand-collected data set on venture-backed start-ups in Germany, we investigate the internal due diligence documents of over 200 investment rounds. We document that balance sheet and income statement items capture as much economic content as verifiable non-financial information (e.g. team experience or the number of patents) while controlling for several deal characteristics (e.g. industry, investment round, or yearly VC fund inflows). In addition, we show that valuations based on accounting and non-accounting information yield a level of valuation accuracy that is comparable to that of publicly traded firms. Further analyses show that the industry-specific total asset multiples outperform the popular revenue multiples but lead to significantly less accurate results than those obtained from the more comprehensive valuation models. Overall, our findings might inform researchers and standard-setters of the usefulness of accounting information for investment companies and provide additional evidence to gauge the overall valuation accuracy in VC settings.  相似文献   
998.
Abstract

Prior research documents that conditional conservatism, measured as the asymmetric timeliness of earnings reflecting bad vs. good news, varies with cross-country differences in institutional regimes. In this paper, we examine the determinants of conditional conservatism and related earnings attributes internationally. First, using panel data, we investigate whether competing earnings attributes such as unconditional conservatism and income smoothing affect conditional conservatism and its international differences. We find that these attributes are predictably correlated with conditional conservatism. Second, we address the question whether income smoothing and conditional conservatism are two fundamentally different earnings attributes. We show theoretically that both attributes yield different earnings distributions and that the motivations for producing earnings which possess these attributes differ. To test these predictions empirically, we calculate firm-specific time-series measures of asymmetric timeliness, using a novel trigonometric measure based on the standard Basu (1997)-type regression. Using this cross-sectional data, we test whether conditional conservatism and income smoothing are different and find them to be only weakly correlated for a broad international sample. Also, we demonstrate that income smoothing explains international differences in conditional conservatism. Finally, we estimate simple determinant models of conditional conservatism and income smoothing, showing that both earnings attributes are driven by different explanatory firm-level factors: Conditional conservatism increases with the importance of debt financing, while income smoothing increases with the importance of dividends. Despite some important limitations, we believe our results to be meaningful because they show that cross-country differences in conditional conservatism are influenced by the effects of other accounting properties, predominantly income smoothing. Especially, legal regime appears to drive income smoothing while losing its explanatory power for conditional conservatism when firm-specific factors are controlled for.  相似文献   
999.
Abstract . It is the purpose of this paper to examine critically the choice of “zero discharge” as me ultimate goal of our federal water pollution policy and to demonstrate that a goal of 90 percent removal of pollutants from effluents of urban areas will be more economically efficient. Our results indicate that in reaching “Zero discharge,” there is a minimal return in water quality for urban areas which are located on large bodies of water. The final conclusion is that the substantial resources, which would be required to surpass the level of 90 percent removal of pollutants, could be employed more effectively in other social programs.  相似文献   
1000.
In this paper some known formulae concerning overflow traffic have been derived in a simpler way than is generally done in literature, i.e. by using simple results obtained from elementary renewal theory.
After the model has been introduced, the distribution of intervals between overflows is calculated by means of a recurrence relation. A generalization of Erlang's formula for the call congestion follows almost immediately. The last section the special case of Poisson input is discussed.  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