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   589篇
  免费   33篇
财政金融   68篇
工业经济   38篇
计划管理   116篇
经济学   148篇
综合类   13篇
运输经济   11篇
旅游经济   37篇
贸易经济   114篇
农业经济   30篇
经济概况   46篇
邮电经济   1篇
  2023年   4篇
  2022年   7篇
  2021年   7篇
  2020年   8篇
  2019年   17篇
  2018年   20篇
  2017年   27篇
  2016年   24篇
  2015年   16篇
  2014年   16篇
  2013年   77篇
  2012年   28篇
  2011年   42篇
  2010年   26篇
  2009年   22篇
  2008年   24篇
  2007年   17篇
  2006年   17篇
  2005年   13篇
  2004年   21篇
  2003年   13篇
  2002年   22篇
  2001年   15篇
  2000年   14篇
  1999年   14篇
  1998年   16篇
  1997年   7篇
  1996年   6篇
  1995年   5篇
  1994年   3篇
  1993年   8篇
  1992年   4篇
  1991年   7篇
  1990年   7篇
  1989年   5篇
  1988年   3篇
  1987年   3篇
  1986年   2篇
  1985年   5篇
  1984年   9篇
  1983年   5篇
  1982年   5篇
  1981年   1篇
  1980年   2篇
  1978年   3篇
  1977年   3篇
  1975年   1篇
  1974年   1篇
排序方式: 共有622条查询结果,搜索用时 15 毫秒
81.
This paper is concerned with the structure and time-consistency of optimal fiscal and monetary policy in an economy without capital. In a dynamic context, optimal taxation means distributing tax distortions over time in a welfare-maximizing way. For a barter economy, our main finding is that with debt commitments of sufficiently rich maturity structure, an optimal policy, if one exists, is time-consistent. In a monetary economy, the idea of optimal taxation must be broadened to include an ‘inflation tax’, and we find that time-consistency does not carry over. An optimal ‘inflation tax’ requires commitment by ‘rules’ in a sense that has no counterpart in the dynamic theory of ordinary excise taxes. The reason time-consistency fails in a monetary economy is that nominal assets should, from a welfare-maximizing point of view, always be taxed away via an immediate inflation in a kind of ‘capital levy’. This emerges as a new possibility when money is introduced into an economy without capital.  相似文献   
82.
Integrated employee benefit decision making helps employees use their benefits more wisely and identify opportunities to balance their immediate benefits needs (such as health care) and future benefits needs (such as retirement). This article discusses how employers can overcome employees' behavioral barriers to making integrated employee benefit decisions by changing the ways benefits are communicated and employees are presented with action decisions. Undertaking these steps allows employers to not only improve their employees' overall financial perspectives, but also furthers plan sponsors' goals of actively promoting personal responsibility with respect to retirement funding and changing employee behavior with respect to controlling health care costs.  相似文献   
83.
84.
Counternarcotics interdiction efforts have traditionally relied on historically determined sorting criteria or “best guess” to find and classify suspected smuggling traffic. We present a more quantitative approach which incorporates customized database applications, graphics software and statistical modeling techniques to develop forecasting and classification models. Preliminary results show that statistical methodology can improve interdiction rates and reduce forecast error. The idea of predictive modeling is thus gaining support in the counterdrug community. The problem is divided into sea, air and land forecasting, only part of which will be addressed here. The maritime problem is solved using multiple regression in lieu of multivariate time series. This model predicts illegal boat counts by behavior and geographic region. We developed support software to present the forecasts and to automate the process of performing periodic model updates. During the period, the model was in use at. Coast Guard Headquarters. Because of deterrence provided by improved intervention, the vessel seizure rate declined from 1 every 36 hours to 1 every 6 months. Due in part to the success of the sea model, the maritime movement of marijuana has ceased to be a major threat. The air problem is more complex, and required us to locally design data collection and display software. Intelligence analysts are using a customized relational database application with a map overlay to perform visual pattern recognition of smuggling routes. We are solving the modeling portion of the air problem using multiple regression for regional forecasts of traffic density, and discriminant analysis to develop tactical models that classify “good guys” and “bad guys”. The air models are still under development, but we discuss some modeling considerations and preliminary results. The land problem is even more difficult, and data collection is still in progress.  相似文献   
85.
With a combined career of over 60 years in oncology nursing, the authors reflect on the critical elements in the question, "How can we afford to die?" Three high-profile patient scenarios in three different decades promised to improve use of advance directives but did not. Recent societal events, including the debates about health care reform, have brought attention again to end-of-life issues and care. Quickly approaching a "perfect storm" of an aging population, an inefficient and costly illness-oriented health care system, and health care profession shortages, the United States will not be able to afford delivering futile interventions. Nurses, who are consistently seen as the most trusted professionals, must take action in strategies the authors present.  相似文献   
86.
87.
The possible contribution of local sales chains to the reduction of energy consumption has been hotly debated in recent years. Some authors establish a link between the reduction of distances traveled by food and lower energy consumption due to transportation, while others hold that local supply chains have a poor energy performance. This article engages this debate by comparing the rates of energy consumption attributable to different modes of distribution of fruits and vegetables in a region of France.  相似文献   
88.
89.
Lucas L  Steinberg A 《Benefits quarterly》2006,22(4):13-4, 16-23
Recognizing that 401(k) plans are emerging as many employees' sole source of employer-sponsored retirement income, plan sponsors are increasingly adding paternalistic plan features to increase the amount--and effectiveness--of dollars invested in 401(k) accounts. The authors describe the results of a study they prepared for Hewitt Associates that assesses retirement income adequacy for individuals represented in a plan participant database of 1.8 million individuals. The study includes analysis of retirement income adequacy for the aggregate population as well as the results for different subgroups, reflecting factors such as whether individuals actively contribute; the impact of different levels of retiree medical coverage; and the presence of a defined benefit pension. Finally, the authors discuss how plan sponsors can bolster the adequacy of retirement income from 401(k) plans, depending on employer objectives.  相似文献   
90.
Ecosystem transformation and climate change evolve over long time scales. The effects of the economic decisions on the natural environment are also of a long-run character because they relate to investment decisions and capital stocks. At the same time, the economy is short-sighted and subject to different kinds of market failures. The time it takes to notice the changes and adequately address the associated problems affects the dynamics and inertia of the process. We discuss some recent contributions and new research questions that deal with time and timing in environmental and resource economics.  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