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   24237篇
  免费   449篇
  国内免费   1篇
财政金融   4593篇
工业经济   1714篇
计划管理   3610篇
经济学   5340篇
综合类   380篇
运输经济   175篇
旅游经济   435篇
贸易经济   3667篇
农业经济   1257篇
经济概况   3459篇
信息产业经济   1篇
邮电经济   56篇
  2021年   136篇
  2020年   250篇
  2019年   413篇
  2018年   498篇
  2017年   503篇
  2016年   520篇
  2015年   289篇
  2014年   534篇
  2013年   2465篇
  2012年   715篇
  2011年   810篇
  2010年   671篇
  2009年   757篇
  2008年   732篇
  2007年   631篇
  2006年   570篇
  2005年   484篇
  2004年   509篇
  2003年   457篇
  2002年   505篇
  2001年   444篇
  2000年   458篇
  1999年   437篇
  1998年   407篇
  1997年   420篇
  1996年   411篇
  1995年   359篇
  1994年   367篇
  1993年   400篇
  1992年   409篇
  1991年   403篇
  1990年   331篇
  1989年   302篇
  1988年   292篇
  1987年   303篇
  1986年   310篇
  1985年   470篇
  1984年   436篇
  1983年   401篇
  1982年   377篇
  1981年   346篇
  1980年   390篇
  1979年   320篇
  1978年   270篇
  1977年   256篇
  1976年   199篇
  1975年   244篇
  1974年   193篇
  1973年   191篇
  1972年   140篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
What changes must economics undergo, if it is to become a moreadequate discipline, furthering of survival and flourishing?This essay argues that a break must be made from contemporarymainstream economics at the level of ontology (i.e., about thenature of reality). Drawing on neglected traditions of pragmatistphilosophy and process metaphysics, some elements of ‘old’institutionalist economics, and late-twentieth century naturalscience, it demonstrates that ample argument exists for a viewof the world as open, evolving and permeated with value. Furthermore,feminist scholarship offers an explanation for why such a worldviewfaces an uphill battle for acceptance.  相似文献   
992.
A decade has now passed since Daly made a plea for an environmental macroeconomics. Despite an expanding literature on "green" national accounting and the efforts of ecological economists to measure the sustainable net benefits of a growing macroeconomy, it is only recently that Daly's plea has been adequately answered. This has been achieved with the incorporation by Heyes of an "environmental equilibrium" or EE curve into the familiar IS–LM model. However, the IS–LM–EE model proposed by Heyes is incomplete. By extending Heyes' model to include the role of technological progress and the need to institute policy instruments to ensure operation on the EE curve, this paper sends out a clear message that environmental concerns should be incorporated into macroeconomic models. They should not be solely confined to microeconomics.  相似文献   
993.
994.
995.
996.
An effective emergency medical service (EMS) response to emergency medical calls during extreme weather events is a critical public service. Nearly all models for allocating EMS resources focus on normal operating conditions. However, public health risks become even more critical during extreme weather events, and hence, EMS systems must consider additional needs that arise during weather events to effectively respond to and treat patients. This paper seeks to characterize how the volume and nature of EMS calls are affected during extreme weather events with a particular focus on emergency preparedness. In contrast to other studies on disaster relief, where the focus is on delivery of temporary commodities, we focus on the delivery of routine emergency services during blizzards and hurricane evacuations. The dependence of emergency service quality on weather conditions is explored through a case study using real-world data from Hanover County, Virginia. The results suggest that whether it is snowing is significant in nearly all of the regression models. Variables associated with increased highway congestion, which become important during hurricane evacuations, are positively correlated with an increased call volume and the likelihood of high-risk calls. The analysis can aid public safety leaders in preparing for extreme weather events.  相似文献   
997.
This paper describes and develops a model for calculating location-based strategic values of foreclosed properties considered for acquisition and redevelopment by community development corporations (CDCs). A property’s strategic value refers to its proximity to site-specific neighborhood amenities and disamenities (e.g. schools, public transit, distressed properties), given the relative importance of that proximity to CDC organizational and community objectives. We operationalize the concept of strategic value, and apply this concept to a salient public sector decision problem. Using data and value assessments from a CDC engaged in foreclosed housing redevelopment, we compute measures of strategic value for a set of acquisition candidates. We show that strategic values can differ in systematic ways depending on the types of amenities and disamenities identified as relevant for CDC acquisition decisions, the relative importance assigned to those amenities and disamenities, and the utility maximization objectives of the CDC. We conclude by proposing a multi-criteria decision model for foreclosed housing acquisition and redevelopment which incorporates a theory of residential housing impacts for which strategic value measures are a special case.  相似文献   
998.
In this study, three different estimators for estimating the proportion of a sensitive attribute in survey sampling are compared at equal protection of the respondents. The three estimators considered are due to Odumade and Singh (2009, Comm. Statist. Theory Methods) , Singh and Sedory (2011, Sociological Methods and Research) and a new estimator obtained by minimizing a chi‐squared distance. A SAS Macro is developed to compare these three estimators using a simulation study at equal protection of the respondents. A set of data from a real face‐to‐face interview was collected using two decks of cards and has been analyzed. The results are discussed.  相似文献   
999.
This research explores the design practice of three prominent New Zealand designers. It seeks to identify the key elements and methodologies they employ and to answer the research question: How do designers design? The need to gain understanding on how designers work, gave me occasion to visit and speak with designers about their approach to design. To look inside a designer’s practice has left me with an overriding impression that these designers know and trust their own way of working, they do not map their thoughts onto a pre-existing process; rather, each new work dictates its own direction. Their understanding has come about through a wealth of design experiences, a way of seeing, and perceptive reflection-in-action.  相似文献   
1000.
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