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   5169篇
  免费   323篇
  国内免费   88篇
财政金融   155篇
工业经济   450篇
计划管理   1225篇
经济学   899篇
综合类   634篇
运输经济   27篇
旅游经济   34篇
贸易经济   680篇
农业经济   867篇
经济概况   609篇
  2024年   3篇
  2023年   76篇
  2022年   84篇
  2021年   144篇
  2020年   166篇
  2019年   119篇
  2018年   104篇
  2017年   121篇
  2016年   124篇
  2015年   156篇
  2014年   380篇
  2013年   392篇
  2012年   432篇
  2011年   522篇
  2010年   382篇
  2009年   329篇
  2008年   357篇
  2007年   333篇
  2006年   308篇
  2005年   241篇
  2004年   174篇
  2003年   149篇
  2002年   99篇
  2001年   113篇
  2000年   84篇
  1999年   50篇
  1998年   30篇
  1997年   21篇
  1996年   16篇
  1995年   10篇
  1994年   14篇
  1993年   10篇
  1992年   6篇
  1991年   3篇
  1990年   2篇
  1989年   1篇
  1988年   1篇
  1987年   3篇
  1986年   2篇
  1985年   8篇
  1984年   6篇
  1983年   1篇
  1982年   2篇
  1981年   1篇
  1980年   1篇
排序方式: 共有5580条查询结果,搜索用时 15 毫秒
1.
Nowadays, industrial firms are very much careful to build a green environment by reducing carbon emissions. The government imposes some rules and regulations to provide a better eco-friendly environment. In this study, the cap-and-trade mechanism has been considered in a production model to control the carbon emissions rate. The manufacturers invest in advanced green technology to reduce per unit emissions. As online and offline selling is crucial to any industry for increasing customer demand, the manufacturers sell their products by dual-channel and advertise their products by online channel to make more popular of their products. Keeping these in mind, a sustainable flexible production model with single-type substitutable product production is considered here by imposing a cap-and-tax policy, investing in green technology, and advertising for products. This model is divided into two cases: with and without investment in green technology. The demand of each manufacturer depends upon an online selling price, an offline selling price, and an online advertisement of the product. A classical optimization technique helps to get the optimum strategies for the online selling price, offline selling price, advertisement investment, green technology, cycle time, and production rate. From the numerical study, it is proved that the industry gets 6.97% more profit in the case of green technology investment and the proposed study gives 5.74% more profit than the traditional production system. Sensitivity analysis and managerial insights are performed.  相似文献   
2.
朱军  张文忠 《科技和产业》2020,20(10):127-130
在职业人才培养改革进入不断深化的阶段下,高职院校如何与行业领先企业合作共建产业学院,实现互惠共赢、可持续发展已成为当下高职教育发展亟待解决的重点与难点。基于对目前高职产业学院现行问题的剖析,以协同创新视角提出了产业学院组织效能提升的关键要素,并在此基础上探索了产业学院实现协同创新的建设路径,为进一步推动高职院校产教融合提供了新的研究思路。  相似文献   
3.
ABSTRACT

China’s opening-up in the past four decades has gone through three waves: the extensive margin of opening-up (1978–2001), the intensive margin of opening-up (2001–2017), and all-around opening-up (since 2017). This paper explores these three stages of the country’s economic reform. China’s gains from trade have been inspired by different economic factors. Before the turn of the century, the large trade volume was due to the realization of comparative advantage based on the country’s factor endowment. However, after its accession to the World Trade Organization, China’s gains from trade have been due, in large part, to the realization of economic scale effects associated with the larger market.  相似文献   
4.
This article investigates the patterns of vertical specialization in trade among China, Japan and Korea, and the effects of real exchange rate fluctuations under a multistage production process. By extending the models of Yi (2003, 2010), we derive two distinct features of vertical specialization and test them using Time-Varying Parameter (TVP) VAR. We find that a positive shock to China’s final good consumption increases the intermediate goods trade between Korea and China, with expanding magnitude over time. In addition, the positive effect of a real exchange rate depreciation on intermediate goods trade is strengthened through the competitiveness-enhancing channel, with this effect being more pronouncing in Korea-China trade than in Korea-Japan trade.  相似文献   
5.
Abstract

The relationship between feminism and PCS is complex and an exemplar of the politics of knowledge production. We begin this paper by detailing the evolving relationship between feminism and PCS, and identify two key ways that feminist sport scholars have responded to PCS. Whereas one group has rejected PCS outright, another is reappropriating PCS for their own purposes. Aligning with the latter, in the remainder of the paper we offer one of many possible imaginings of a feminist interpretation of the PCS assemblage. More specifically, we briefly outline how a feminist engagement with some of the key tenets of PCS facilitated new understandings of New Zealand women’s embodied experiences of netball, includingMāori women.In so doing, we reveal what a FPCS approach might look like in practice and highlight ways that feminist scholars have, and can continue to, contribute to the PCS agenda through embodied, theoretical, reflexive, political, contextual and culturally-specific research.  相似文献   
6.
Food waste has drawn increasing public attention, and the high levels of estimated waste are largely considered to be a failure of our current food system. Recently, economists have begun to weigh in, showing food waste can emerge as the result of a complex equilibrium affected by consumers’ preferences for convenience; expectations about future food prices and availability; food safety concerns; producers’ costs of holding inventory, transportation, and storage; government regulation; and technology. If food waste is a form of inefficiency, there are either strong economic motivations to reduce waste, or unmeasured costs or preferences affecting waste decisions. If consumers have behavioral biases, suffer from information asymmetries, or do not pay the full cost of their waste, there may be a role for government intervention to reduce waste, but most empirical models in the literature have not articulated or quantified the extent of the deadweight loss from the market failures in relation to food waste. In some cases, waste reduction efforts could harm producers if overall demand for food is reduced or harm consumers if overconsumption is encouraged, quality or safety degrades, or supply disruptions occur. Technological innovations, which lower the cost of storage or extend shelf life have the potential to improve both consumer and producer welfare.  相似文献   
7.
[目的]我国农地流转市场发展迅速,农村土地呈现集中趋势。准确把握农村土地流动方向,探析农地流转对农业生产效率及农民收入的影响,对保障农地流转市场健康发展,实现农业现代化的关键,具有重要的现实意义。[方法]基于文献研究法对相关研究进行梳理和总结。[结果](1)有效的农地流转市场使土地从低效率生产者流转至高效率生产者,从高收入农户流转至收入两端的农户,并有提高农业生产效率和增加农民收入的作用。转入户中存在显著的异质性差异,一部分是缺乏资金和人力资本的小规模农户,另一部分则是具有丰富资金和人力资本的大规模农户。(2)农业比较收益劣势易造成农地流转市场扭曲,改变土地流动方向,导致农业生产效率下降,并加剧农民收入的不平等。[结论]有效的农地流转市场有助于提高农业生产效率并增加农户收入。然而,农业较低的比较收益及政府的过度干预易造成农地流转市场扭曲,农业生产效率提升潜力难以发挥,增收效应减弱,农村收入差距加大。建议政府对农地流转进行有序引导,并注重劳动力市场及信贷市场的配套完善。  相似文献   
8.
9.
应用双指耦合结构和枝节加载谐振器(Stub-loaded Resonator,SLR)实现了一款基于阶梯阻抗谐振器(Stepped Impedance Resonator,SIR)的滤波器。该滤波器具有3个通带,带外抑制较好,工作频段提高。通过调整阻抗比可调节第二、三通带的谐振频率;SLR结构能够增加通带数量;SLR结构和双指耦合结构均能改善滤波器的S参数。HFSS软件仿真表明,3个通带的中心频率分别为3.5 GHz、6.6 GHz、9.2 GHz,对应的分数带宽分别为5.7%、3%、2%,S11分别为-18 dB、-22 dB、-24 dB,通带内的S21分别为-1.8 dB、-1 dB、-1 dB。电路的测量结果与仿真结果较为吻合。该滤波器在5G通信的低频段具有应用前景。  相似文献   
10.
Negative consumer behavior is an important research topic as it explores consumer behaviors that threaten a brand's image and financial stability. However, prior research offers conflicting findings on whether a strong consumer‐brand relationship hurts or protects a brand after a market disruption or a brand transgression. To provide clarity on this issue, this work argues that disrupting the consumer‐activity relationship motivates consumers to reaffirm and protect their identity, thereby leading to negative consumer behavior. The data reveal that, after a brand‐initiated market disruption, consumers with high activity identity fusion are more likely to spread negative word‐of‐mouth, boycott the brand, and avoid repurchasing the brand in the future. Moreover, the data suggest that high brand identity fusion protects the brand during market disruptions; therefore, prior conflicting results may be due to the fact that the consumer‐activity relationship was not accounted for. Theoretically, this work establishes that consumers' relationship with their consumption activities has significant impacts on consumer behavior. Brand managers and marketers are urged to develop strategies that focus on strengthening the consumer‐brand relationship and not the consumer‐activity relationship.  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