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   1062篇
  免费   52篇
财政金融   157篇
工业经济   57篇
计划管理   191篇
经济学   295篇
综合类   10篇
运输经济   17篇
旅游经济   25篇
贸易经济   271篇
农业经济   19篇
经济概况   69篇
信息产业经济   1篇
邮电经济   2篇
  2024年   8篇
  2023年   22篇
  2022年   8篇
  2021年   23篇
  2020年   36篇
  2019年   37篇
  2018年   91篇
  2017年   82篇
  2016年   80篇
  2015年   49篇
  2014年   55篇
  2013年   165篇
  2012年   58篇
  2011年   48篇
  2010年   51篇
  2009年   53篇
  2008年   41篇
  2007年   28篇
  2006年   18篇
  2005年   14篇
  2004年   20篇
  2003年   17篇
  2002年   14篇
  2001年   11篇
  2000年   9篇
  1999年   9篇
  1998年   5篇
  1997年   7篇
  1996年   5篇
  1995年   8篇
  1994年   6篇
  1992年   4篇
  1989年   2篇
  1988年   2篇
  1987年   2篇
  1986年   2篇
  1985年   1篇
  1984年   3篇
  1983年   2篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1977年   2篇
  1976年   2篇
  1975年   2篇
  1974年   1篇
  1961年   2篇
  1958年   1篇
  1956年   1篇
  1908年   1篇
排序方式: 共有1114条查询结果,搜索用时 15 毫秒
81.
82.
The ease with which 3D CAD models may be modified and reused are two key aspects that improve the design-intent variable and that can significantly shorten the development timelines of a product. A set of rules are gathered from various authors that take different 3D modelling strategies into account. These rules are then applied to CAD strategic-knowledge learning methodology and included in 3D CAD modelling exercises for students following the degree in mechanical engineering at the University of Burgos (Spain). The experiment was conducted in two groups with a total of 75 students. The design-intent rules were introduced in the different exercises that the teacher explained in both the theoretical and the practical classes. In addition, a summary of the different design rules in each of the practical exercises was explained in the practical classes in only one of the groups. The experimental results, reported in this paper, tested the influence of these summaries on overall improvements in 3D modelling and on the design-intent variable, which is subdivided into four sections: skeleton, structures, alterations and constraints. The use of the summaries of the design intent rules led to statistically significant improvements in 3D modelling in the experimental group, in comparison with the group of students to whom those summaries were not explained.  相似文献   
83.
84.
Knowledge is increasingly perceived as a fulcral factor to company competitiveness. As the transfer of knowledge is one of the key functions of knowledge intensive business services (KIBS), this research seeks to analyse how the transfer of knowledge takes place between the higher education sector and KIBS type firms. The empirical results show that cooperation between KIBS and universities occurs irrespective of the typology (whether professional or technological in focus). We also empirically establish how geographic proximity is the factor bearing greatest influence over cooperation while such cooperation proves to have a positive impact on the company capacity to innovate. We furthermore find that this innovation capacity also drives a positive company financial performance.  相似文献   
85.
Research summary: We show that private equity ownership (“PE backing”) of the acquirer is a signal of deal quality in cross‐border takeovers. As such, PE‐backed acquirers experience higher announcement returns in cross‐border takeovers, but only if targets are in poor information environments. We show that PE backing is a positive market signal because of PE firms' experience and networks that result from prior deals in target countries. We document that the market correctly anticipates that operating performance of PE‐backed acquirers increases as a result of cross‐border mergers and acquisitions (M&A). Managerial summary: We study cross‐border acquisitions by acquirers that are partially owned by private equity firms (“PE backing”). Cross‐border acquisitions are challenging as acquirers often have little information about targets. We document that investors react positively to cross‐border deals of PE‐backed acquirers—their stock prices increase upon deal announcements. However, this is only the case if targets are in countries with poor information environments. This is because PE backing allows acquirers to access PE firms' deal experience and networks. This makes it easier to identify and evaluate good targets, making it more (less) likely that a deal eventually creates (destroys) value. Consistent with this, we find that earnings of PE‐backed acquirers increase after buying targets in poor information environments. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
86.
This study investigates the decision-making logics used by new ventures to develop their business models. In particular, they focussed on the logics of effectuation and causation and how their dynamics shape the development of business models over time. They found that the effectual decision-making logic was used dominantly to generate a viable value proposition for a specific customer segment. Causal logic is then used dominantly to define the other business model components in relation to the value proposition and customer segment. When a shortage of resources emerges, causal logic is replaced by an increase in effectual decision-making again. They concluded that before investing significant resources in a business model it was crucial for firms to reduce, as far as possible, technological and market uncertainty through effectual strategies to avoid high re-configuration costs later.  相似文献   
87.
This paper develops two novel methodologies for pricing and hedging European-style barrier option contracts under the jump to default extended constant elasticity of variance (JDCEV) model, namely: a stopping time approach based on the first passage time densities of the underlying asset price process through the barrier levels; and a static hedging portfolio approach in which the barrier option is replicated by a portfolio of plain-vanilla and binary options. In doing so, both valuation methodologies are extended to a more general set-up accommodating endogenous bankruptcy, time-dependent barriers and the commonly observed stylized facts of a positive link between default and equity volatility and of a negative link between volatility and stock price. The two proposed numerical methods are shown to be accurate, easy to implement and efficient under both the JDCEV model and the nested constant elasticity of variance model.  相似文献   
88.
We study the impact of tax and transfer programs on steady-state allocations in a model with search frictions, an operative labor supply margin, and incomplete markets. In a benchmark model that has indivisible labor and incomplete markets but no trading frictions we show that the aggregate effects of taxes are identical to those in the economy with employment lotteries, though individual employment and asset dynamics can be different. The effect of frictions on the response of aggregate hours to a permanent tax change is highly nonlinear. There is considerable scope for substitution between “voluntary” and “frictional” nonemployment in some situations.  相似文献   
89.
Students today see little relevance in learning double-entry bookkeeping and find it difficult to learn how to prepare journal entries correctly. In particular, they struggle with the first stage of the double-entry process: identifying which accounts are to be debited and which are to be credited for each transaction. This paper reports on an attempt to overcome this situation by using the first printed instructional text on the subject (Pacioli, 1494) as the principal textbook on a 20-hour component of the introductory financial accounting course in an undergraduate accounting degree program. Instruction followed the pedagogy presented by Pacioli and only minimal additional costs to faculty were incurred.  相似文献   
90.
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