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   1573篇
  免费   63篇
财政金融   346篇
工业经济   75篇
计划管理   292篇
经济学   383篇
综合类   14篇
运输经济   13篇
旅游经济   39篇
贸易经济   241篇
农业经济   100篇
经济概况   131篇
邮电经济   2篇
  2023年   8篇
  2021年   12篇
  2020年   29篇
  2019年   25篇
  2018年   26篇
  2017年   50篇
  2016年   53篇
  2015年   34篇
  2014年   44篇
  2013年   213篇
  2012年   61篇
  2011年   53篇
  2010年   51篇
  2009年   63篇
  2008年   63篇
  2007年   56篇
  2006年   56篇
  2005年   49篇
  2004年   43篇
  2003年   53篇
  2002年   54篇
  2001年   41篇
  2000年   21篇
  1999年   35篇
  1998年   32篇
  1997年   27篇
  1996年   21篇
  1995年   24篇
  1994年   19篇
  1993年   17篇
  1992年   16篇
  1991年   15篇
  1990年   13篇
  1989年   14篇
  1988年   16篇
  1987年   17篇
  1986年   10篇
  1985年   23篇
  1984年   20篇
  1983年   23篇
  1982年   17篇
  1981年   15篇
  1980年   12篇
  1979年   17篇
  1978年   15篇
  1977年   14篇
  1976年   10篇
  1975年   6篇
  1974年   9篇
  1967年   4篇
排序方式: 共有1636条查询结果,搜索用时 31 毫秒
1.
We respond to the new article by Hayo, Neumeier, and Westphal (HNW), which is a critique of our 2006 article. The principal contribution of that article wa  相似文献   
2.
We investigate the impact of direct payments on agricultural commercialisation in Kosovo. Kosovo is one of the poorest countries in Europe but, with European assistance, provides substantial funds to support agriculture, made up of many small and often semi‐subsistence farms. Thus, the effect of this support is a central policy issue. Identifying the effect of direct payments on market participation faces endogeneity issues arising from the possible simultaneous determination of participation in support programmes and market participation. In order to achieve proper identification of the endogenous direct payments, we use a strategy of targeted identification search that employs several different methodological approaches. We find that direct payments for fruit and vegetables, and those for cereals and oilseeds have a positive effect on market participation. However, we cannot identify any definite effect of livestock payments.  相似文献   
3.

How does social distancing affect the reach of an epidemic in social networks? We present Monte Carlo simulation results of a susceptible–infected–removed with social distancing model. The key feature of the model is that individuals are limited in the number of acquaintances that they can interact with, thereby constraining disease transmission to an infectious subnetwork of the original social network. While increased social distancing typically reduces the spread of an infectious disease, the magnitude varies greatly depending on the topology of the network, indicating the need for policies that are network dependent. Our results also reveal the importance of coordinating policies at the ‘global’ level. In particular, the public health benefits from social distancing to a group (e.g. a country) may be completely undone if that group maintains connections with outside groups that are not following suit.

  相似文献   
4.
5.
What drove the precocious industrialisation in Britain was not demand for machines but rather (as Joel Mokyr and his co-authors have argued) the supply of useful knowledge and the skills needed to put it into practice. They were the force behind early innovation. But they did not act alone. They were reinforced by British institutions, which gave the British economy a century's head start over the rest of Europe and likely too over the rich parts of Asia. The institutions included a uniform fiscal and legal system; an effective means of training apprentices, who had escaped from local guild control; and a parliament that could raise taxes and exercise eminent domain but was at the same time a credible protector of private property. Among other things, these institutions facilitated the transportation of goods such as coal and they were backed up by policies that worked in favour of manufacturing. Together, the institutions and policies generated agglomeration effects that encouraged innovation. The agglomeration effects were more pronounced in western Europe than anywhere else in Eurasia and more developed in Britain than anywhere else.  相似文献   
6.
Aims: The EINSTEIN-Extension trial (EINSTEIN-EXT) found that continued treatment with rivaroxaban for an additional 6 or 12 months (vs placebo) after 6–12 months of initial anticoagulation significantly reduced the risk of recurrent venous thromboembolism (VTE) with a small non-significant increased risk of major bleeding (none fatal or in critical site). This study aimed to compare total healthcare cost between rivaroxaban and placebo, based on the EINSTEIN-EXT event rates.

Methods: Total healthcare cost was calculated as the sum of treatment and clinical event costs from a US managed care perspective. Treatment duration and event rates were obtained from the EINSTEIN-EXT study. Adjustment on treatment duration was made by assuming a 10% non-adherence rate. Drug costs were based on wholesale acquisition costs. Cost estimates for clinical events (i.e. recurrent deep vein thrombosis [DVT], recurrent pulmonary embolism, major bleeding, clinically relevant non-major bleeding) were determined from the literature. Results were examined over a ±20% range of each cost component and over 95% confidence intervals (CIs) of event rate differences in deterministic (one-way) and probabilistic sensitivity analyses (PSA).

Results: Total healthcare cost was $1,454 lower for rivaroxaban-treated (vs placebo-treated) patients in the base-case, with a lower clinical event cost fully offsetting drug cost. The cost savings of recurrent DVT alone (–$3,102) was greater than drug cost ($2,723). Total healthcare cost remained lower for rivaroxaban in the majority (73%) of PSA (cost difference [95% CI]?=?–$1,454 [–$2,396, $1,231]).

Limitations: This study was conducted over the 1-year observation period of the EINSTEIN-EXT trial, which limited “real-world” applicability and examination of long-term economic impact. Assumptions on drug and clinical event costs were US-based and, thus, not applicable to other healthcare systems.

Conclusions: Total healthcare costs were estimated to be lower for patients continuing rivaroxaban therapy compared to those receiving placebo in VTE patients who had completed 6–12 months of VTE treatment.  相似文献   
7.
We investigate the impact of macroprudential policy on Irish households' perception of savings adequacy, with a particular focus on households intending to purchase a home. These measures tighten loan-to-value ratios and raise the entry cost for home purchase. We find that the measures have had a significant impact on savings constraints. Indeed, constrained potential buyers, who are planning to purchase, but not presently saving to buy a home, are the group most affected as the macroprudential rules increase the downpayment size required. Heterogeneous effects across households indicate younger, private renting households, and those with relatively uncertain cash flows.  相似文献   
8.
This article looks at successive attempts to create new spatial imaginaries around three estuary‐based city regions in England: the London–Thames Gateway, the Atlantic Gateway/Mersey Belt (Manchester and Liverpool), and Hull and the Humber ports. We develop a framework of analysis for new planning and regeneration spaces that takes forward debates on relational and territorial geographies, spatial imaginaries and the creation of new regional identities as governance objects. Specifically, we adopt a long‐term and comparative perspective that allows an examination of how successive efforts at regional building are both path‐dependent and context‐specific, as new approaches reflect emerging ideas about how best to construct successful regions in a changing global economy.  相似文献   
9.
10.
Integrating theories and findings from various disciplines, we develop a decision utility model to explain how anticipated discrete emotions mediate investment decisions. We illustrate the model with the anticipated discrete emotions of a hypothetical Ponzi scheme investor and suggest practical measures to manage financial risks, emotionally.  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