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   992篇
  免费   51篇
  国内免费   12篇
财政金融   57篇
工业经济   47篇
计划管理   203篇
经济学   177篇
综合类   144篇
运输经济   19篇
旅游经济   61篇
贸易经济   182篇
农业经济   44篇
经济概况   121篇
  2024年   1篇
  2023年   26篇
  2022年   18篇
  2021年   32篇
  2020年   42篇
  2019年   31篇
  2018年   35篇
  2017年   36篇
  2016年   34篇
  2015年   26篇
  2014年   72篇
  2013年   107篇
  2012年   71篇
  2011年   97篇
  2010年   76篇
  2009年   56篇
  2008年   63篇
  2007年   66篇
  2006年   53篇
  2005年   32篇
  2004年   16篇
  2003年   17篇
  2002年   9篇
  2001年   9篇
  2000年   7篇
  1999年   2篇
  1998年   3篇
  1997年   4篇
  1996年   3篇
  1995年   1篇
  1994年   4篇
  1993年   2篇
  1991年   1篇
  1984年   1篇
  1981年   1篇
  1979年   1篇
排序方式: 共有1055条查询结果,搜索用时 15 毫秒
1.
Artificial intelligence (AI) has captured substantial interest from a wide array of marketing scholars in recent years. Our research contributes to this emerging domain by examining AI technologies in marketing via a global lens. Specifically, our lens focuses on three levels of analysis: country, company, and consumer. Our country-level analysis emphasizes the heterogeneity in economic inequality across countries due to the considerable economic resources necessary for AI adoption. Our company-level analysis focuses on glocalization because while the hardware that underlies these technologies may be global in nature, their application necessitates adaptation to local cultures. Our consumer-level analysis examines consumer ethics and privacy concerns, as AI technologies often collect, store and process a cornucopia of personal data across our globe. Through the prism of these three lenses, we focus on two important dimensions of AI technologies in marketing: (1) human–machine interaction and (2) automated analysis of text, audio, images, and video. We then explore the interaction between these two key dimensions of AI across our three-part global lens to develop a set of research questions for future marketing scholarship in this increasingly important domain.  相似文献   
2.
3.
分析了座舱显示系统发展现状和面临的问题,设计并实现了一种一体化、大屏幕显示的智能化多功能显示器。该型显示器通过FC-AE-ASM(Fibre Channel-Avionics Environment-Anonymous Subscriber Message)网络和高速串行总线高效传输图形数据,解决了图形处理及传输的瓶颈问题;采用ARINC661(座舱显示系统与用户系统的接口)标准,规范了任务处理和显示处理的接口设计标准;支持红外触控以提高人机信息的交互效率;采用工程优化设计以提高显示器抗恶劣环境的能力。应用表明智能多功能显示器运行可靠,相对于传统飞行显示器,在显示处理、数据传输和人机功效等方面具有显著优势。  相似文献   
4.
In this paper, the literature on the interaction between monetary and fiscal policies in a monetary union is surveyed. By adopting the concept of symbiosis as a starting point, the paper highlights the importance of uncertainty, policy makers' preferences and targets. Then, the role of commitment to policy rules and coordination is addressed. The analysis also focuses on the importance of the data considered for the generation of the policy mix. As a final step, the paper discusses the main results in the literature on public debt management in a monetary union. All the reported theoretical results are then adopted to retrieve policy and institutional implications for the European Monetary Union.  相似文献   
5.
ABSTRACT

This study takes a micro standpoint to quantitatively verify the extent to which local interactions affect the expansion of dynamic social networks. By reviewing and synthesizing the theoretical literature in this article, we seek to establish a pragmatic analytical framework to capture the underlying functioning of local interactions. It then aims to produce findings on seven distinct marketing campaigns in which the real-world virtual communities offer intact time-series connections. In our considered cases, the firm-to-consumer interactivity plays a pivotal role in social media marketing while the customer-driven influence advances individual information transmission. The significant positive relationships demonstrate features of interactivity within subgroups including reciprocal edges and directed 3-cliques associated with the evolution of the virtual community by electronic word-of-mouth (WOM) of both firm-to-consumer and consumer-to-consumer interactions. More importantly, the attenuation of local interactions to a large extent leads to the cut-off point of the growth of the dynamic social network.  相似文献   
6.
研究目的:对耕地占补平衡的发展阶段与政策绩效、存在问题与逻辑根源进行分析,对改进方式进行探讨,进而提出管理创新建议,为新时代耕地占补平衡政策实施提供科学依据,为促进城乡融合、扶贫攻坚和乡村振兴提供参考。研究方法:综合分析与系统推理。研究结果:(1)耕地占补平衡存在实质性不平衡、时空性不平衡、政策性弱化等微观、中观及宏观层面问题;(2)在数量方面,通过盘活宅基地增量、存量和完善易地调剂方式,统筹城乡和区域平衡来实现数量占补平衡。(3)在质量方面,通过优化建设用地约束指标、完善耕地质量评价、规范耕作层保护与再利用等促进耕地质量占补平衡。(4)在生态方面,通过完善指标调剂的价格内涵、扩大耕地补偿标准范围、转变耕地补充途径等实现耕地生态占补平衡。研究结论:建议做好顶层设计,抓好规划引领,构建耕地占补平衡与城乡要素流动的平衡机制,建立耕地占补平衡后续生态管护长效机制,提升软硬实力等。  相似文献   
7.
视频用户体验的质量要求给网络传输带来了巨大挑战,未来的虚拟现实/增强现实(Virtual Reality/Augmented Reality,VR/AR) 视频业务则对交互时延提出了更高要求。视频业务识别是网络运营商及视频业务提供商对视频进行优先网络资源分配和自适应速率控制的基本前提。综述了业务识别领域的一般研究方法及其对视频业务的具体应用。首先,总结了每种业务识别方法的工作原理,对比了这些方法应用于视频业务时的优缺点及在准确率和召回率指标上的识别性能;然后,特别介绍了可以提升识别准确率和计算性能的特征选择算法;最后,阐述并分析了高吞吐量网络分类速度不够、无成熟视频业务识别平台和样本分布不均衡等视频业务识别面临的挑战,并针对现有业务识别方法存在的问题,给出了引入移动边缘计算、基于端口的方法串联其他识别方法等可能的解决方案。  相似文献   
8.
We present a simple quantile regression-based forecasting method that was applied in the probabilistic load forecasting framework of the Global Energy Forecasting Competition 2017 (GEFCom2017). The hourly load data are log transformed and split into a long-term trend component and a remainder term. The key forecasting element is the quantile regression approach for the remainder term, which takes into account both weekly and annual seasonalities, such as their interactions. Temperature information is used only for stabilizing the forecast of the long-term trend component. Information on public holidays is ignored. However, the forecasting method still placed second in the open data track and fourth in the definite data track, which is remarkable given the simplicity of the model. The method also outperforms the Vanilla benchmark consistently.  相似文献   
9.
This paper analyses spatial interaction in public spending decisions across 22 Indian states during the period 1980–1981 to 2014–2015. In particular, we estimate interactive hypotheses for different proximities of states using a spatial panel data approach. The empirical results support strong spatial interaction and yardstick competition in public spending. Interactive behavior among the states has been found to be consistent and conditional on per capita income, fiscal transfers, infrastructure, literacy and population density. Interaction arising from yardstick competition significantly affects public spending decisions. The present study realizes the need for a well‐developed and comprehensive network to strengthen the interdependence in public spending among the states for higher welfare gain.  相似文献   
10.
研究目的:基于对国内外大量研究成果的梳理,对城市土地利用与交通相互作用(LUTI)的复杂机理展开系统回顾与述评,并尝试提出未来亟需重点关注的研究领域与方向。研究方法:文献资料法,对比分析法。研究结果:国内外实证研究领域及空间尺度表现出明显分异,部分研究结果亦呈现出差异化特征;国外热衷于引入多学科理论与方法构建LUTI一体化模型,而国内所引入的数学规划模型多停滞在理论分析与模拟层面,应用性相对有限,但近年来国内学者逐渐加强LUTI协调性评价,研究领域呈现出新特征。研究结论:全球可持续发展背景下,LUTI研究为实现城市土地利用与交通的协调发展提供了良好基础,未来应加强对LUTI模型方法与互馈机理的研究,并深入探讨现代交通发展对土地利用的影响机制,环境、社会因素亦应引起重视,国内学界则应注重本土性与应用性研究。  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