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   1436篇
  免费   52篇
财政金融   233篇
工业经济   109篇
计划管理   234篇
经济学   353篇
综合类   7篇
运输经济   19篇
旅游经济   35篇
贸易经济   302篇
农业经济   52篇
经济概况   131篇
邮电经济   13篇
  2023年   12篇
  2022年   12篇
  2021年   22篇
  2020年   30篇
  2019年   45篇
  2018年   58篇
  2017年   64篇
  2016年   46篇
  2015年   23篇
  2014年   51篇
  2013年   222篇
  2012年   60篇
  2011年   65篇
  2010年   59篇
  2009年   55篇
  2008年   69篇
  2007年   52篇
  2006年   42篇
  2005年   46篇
  2004年   37篇
  2003年   42篇
  2002年   26篇
  2001年   36篇
  2000年   28篇
  1999年   29篇
  1998年   33篇
  1997年   31篇
  1996年   24篇
  1995年   14篇
  1994年   17篇
  1993年   10篇
  1992年   8篇
  1991年   10篇
  1990年   10篇
  1989年   7篇
  1987年   7篇
  1986年   7篇
  1985年   12篇
  1984年   12篇
  1983年   6篇
  1981年   3篇
  1980年   10篇
  1979年   4篇
  1978年   5篇
  1977年   2篇
  1976年   2篇
  1967年   2篇
  1965年   2篇
  1937年   3篇
  1890年   3篇
排序方式: 共有1488条查询结果,搜索用时 15 毫秒
61.
Abstract.  This paper provides a model of involuntary unemployment by combining the insights of the sticky wage theory and the efficiency wage theory. It implies that employed workers tend to supply more effort in response to economic downturns. Thus, a negative shock to an economy has intriguing impacts on the unemployment. The model also shows that a negative demand shock may have a relatively small effect on output since changes in work effort serve to partially mitigate the effects of the shock. Moreover, it yields some implications that complement the existing 'work sharing' literature.  相似文献   
62.
We examine how offering digital content affects demand for print magazines. Using a searchable website archive, we measure the digital content offered by a sample of US consumer magazines from 1996 to 2001. We find strong evidence that digital content cannibalizes print sales. On average, a magazine’s print circulation declines about 3–4% when it offers a website. However, the effect varies with the type of digital content offered. Offering digital access to the entire contents of the current print magazine reduces print sales by about 9%. We find no evidence that digital content complements print magazines. These results are robust to including controls for unobserved magazine, category, and time effects, as well as controls for the impact of contemporaneous price changes and other factors.  相似文献   
63.
Contemporary economic theory is considered in terms of the science/ideologydistinction. Marx's critique of Hegel is then used to derivea demarcation criterion that sharply separates scientific knowledgefrom ideology. This critique interprets Hegelian methodologyas fundamentally ideological because it understands realityin terms of abstract thought and then hypostatises that thoughtas reality. This process is more generally treated in termsof Marx's theory of value and money, in which money really doesdo what Hegelian logic purports to do. The consequences of consideringMarxian theory in this way provide some purchase on the logicand limitations of contemporary economic theory.  相似文献   
64.
This article empirically analyses the link between innovation and performance using a sample of large Australian firms, with a specific aim of developing benchmarking tools. Innovation is measured by firms' investment in R&D and applications for patents, trademarks and designs. An innovation index is constructed to provide one method of benchmarking. The index incorporates a firm's innovative activities into a single figure after accounting for firm size. The index provides a ranking of the most innovative firms in Australia. A second method of benchmarking uses a stochastic production frontier. This type of analysis identifies the firms which are located closest to a ‘best practice innovation frontier’.  相似文献   
65.
66.
Aims: To estimate the cost to hospitals of materials (i.e. medications, equipment, and supplies) required to administer common interventions for post-surgical analgesia after total knee arthroplasty (TKA), including single-injection peripheral nerve block (sPNB), continuous peripheral nerve block (cPNB), periarticular infiltration of multi-drug cocktails, continuous epidural analgesia, intravenous patient-controlled analgesia (IV PCA), and local infiltration of bupivacaine liposome injectable suspension (BLIS).

Materials and methods: This analysis was conducted using a mixed methods approach combining published literature, publicly available data sources, and administrative data, to first identify the materials required to administer these interventions, and then estimate the cost to the hospital of those materials. Medication costs were estimated primarily using the Wholesale Acquisition Costs (WAC), the cost of reusable equipment was obtained from published sources, and costs for disposable supplies were obtained from the US Government Services Administration (GSA) database. Where uncertainty existed about the technique used when administering these interventions, costs were calculated for multiple scenarios reflecting different assumptions.

Results: The total cost of materials (i.e. medications, equipment, and supplies) required to provide post-surgical analgesia was $41.88 for sPNB with bupivacaine; $756.57 for cFNB with ropivacaine; $16.38 for periarticular infiltration with bupivacaine, morphine, methylprednisolone, and cefuroxime; $453.84 for continuous epidural analgesia with fentanyl and ropivacaine; $178.94 for IV PCA with morphine; and $319.00 for BLIS.

Limitations: This analysis did not consider the cost of healthcare providers required to administer these interventions. In addition, this analysis focused on the cost of materials and, therefore, did not consider aspects of relative efficacy or safety, or how the choice of intervention for post-surgical analgesia might impact outcomes such as length of stay, re-admissions, discharge status, adverse events, or total hospitalization costs.

Conclusions: This study provided an estimate of the costs to hospitals for materials required to administer commonly used interventions for post-surgical analgesia after TKA.  相似文献   
67.
Simon Dalby 《Geopolitics》2018,23(3):718-742
ABSTRACT

The human control of fire is a relatively neglected part of the discussion of the contemporary transformation of the planet. Thinking about it in terms of geopolitics is a way to link climate adaptation, extinction and the possibilities of extending traditional analyses of political ecology to the global scale. Such thinking is explicitly rejected as the appropriate premises for foreign policy action by the Trump administration which poses American greatness in terms of traditional understandings of firepower. This clash of geopolitical cultures is now key to global politics, where dramatic landscape transformation, related species extinctions as well as climate change results directly and indirectly from human control of combustion. Firepower is a matter of military technology as well as, in the form of fossil fuel combustion, the essential energy source that fuels the global economy. Focusing on combustion as a key geophysical force in contemporary geopolitics offers useful insights into the Anthropocene discussion and, in particular, the two planetary boundaries of climate change and biodiversity loss, which are key to contemporary efforts at global environmental governance.  相似文献   
68.
Where investments are irreversible and the future is uncertain, people in two countries can make investment decisions that turn out to be mutually inconsistent. I argue that this intertemporal coordination failure explains international business cycles in a two-currency-area setting with a floating foreign exchange rate. The sequence of events starts with an expansionary domestic monetary shock, which decreases the domestic real interest rate. Facing low transactions costs, people spend the new money relatively early in the foreign exchange market and in the foreign market for loanable funds. Domestic monetary expansion thereby changes the relative prices of domestic and foreign goods and also of goods of earlier and later stages of production. The relative price changes lead to intertemporal and international coordination failures once the monetary expansion ends and relative prices change. Domestic monetary policy thereby causes the comovement across different currency areas we observe of business cycles.  相似文献   
69.
Hayek’s business cycle theory portrays monetary expansion and monetary contraction with counterintuitive asymmetry. On the one hand, it suggests that they both change relative prices and cause costly reallocations of production factors. At the same time, the theory predicts that while a monetary contraction causes the economic crisis, the monetary expansion comes with the boom. I argue that what I call intertemporal capital substitution in industries close to final consumption explains why there is a boom in spite of the costly reallocations. More specifically, monetary expansion only gradually increases the demand for nonspecific factors of production by industries that are temporally remote from final consumption. Responding to the expected higher cost of nonspecific factors, consumer-goods industries temporarily increase output and depreciate specific durable production factors faster than they planned.  相似文献   
70.
This study examines leader?Cmember exchange (LMX) as a mediator of the relationship between benevolent leadership and follower task performance and extra-role performance. Using a sample of 223 leader?Cmember dyads in a nonprofit organization in the People??s Republic of China, results indicate that benevolent leadership and LMX are positively related to follower task performance and organizational citizenship behavior towards the organization (OCBO). Findings also support that LMX partially mediates the relationship between benevolent leadership and follower task performance as well as fully mediates the relationship between benevolent leadership and OCBO. Implications for the theory and practice of leadership in Asia are 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