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   31137篇
  免费   573篇
  国内免费   618篇
财政金融   2179篇
工业经济   1950篇
计划管理   11912篇
经济学   2895篇
综合类   3675篇
运输经济   408篇
旅游经济   993篇
贸易经济   3789篇
农业经济   2048篇
经济概况   2478篇
信息产业经济   1篇
  2024年   43篇
  2023年   263篇
  2022年   326篇
  2021年   764篇
  2020年   769篇
  2019年   465篇
  2018年   450篇
  2017年   574篇
  2016年   596篇
  2015年   827篇
  2014年   2459篇
  2013年   2972篇
  2012年   2673篇
  2011年   3367篇
  2010年   2530篇
  2009年   1904篇
  2008年   2186篇
  2007年   1966篇
  2006年   1978篇
  2005年   1542篇
  2004年   1121篇
  2003年   822篇
  2002年   524篇
  2001年   417篇
  2000年   299篇
  1999年   154篇
  1998年   91篇
  1997年   65篇
  1996年   51篇
  1995年   29篇
  1994年   19篇
  1993年   16篇
  1992年   7篇
  1991年   9篇
  1990年   3篇
  1989年   4篇
  1988年   7篇
  1987年   3篇
  1986年   1篇
  1985年   7篇
  1984年   7篇
  1983年   7篇
  1982年   3篇
  1981年   1篇
  1980年   5篇
  1978年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
With continually increasing demand for food accompanied by the constraints of climate change and the availability and quality of soil and water, the world’s farmers are challenged to produce more food per hectare with less water, and with fewer agrochemical inputs if possible. The ideas and methods of the system of rice intensification which is improving irrigated rice production are now being extended/adapted to many other crops: wheat, maize, finger millet, sugarcane, tef, mustard, legumes, vegetables, and even spices. Promoting better root growth and enhancing the soil’s fertility with organic materials are being found effective means for raising the yields of many crop plants with less water, less fertilizer, reduced seeds, fewer agrochemicals, and greater climate resilience. In this article, we review what is becoming known about various farmer-centred innovations for agroecological crop management that can contribute to agricultural sustainability. These changes represent the emerging system of crop intensification, which is being increasingly applied in Asian, African, and Latin American countries. More research will be needed to verify the efficacy and impact of these innovations and to clarify their conditions and limits. But as no negative effects for human or environmental health have been identified, making these agronomic options more widely known should prompt more investigation and, to the extent justified by results, utilization of these methodologies.  相似文献   
992.
研究目的:立足新时代党和国家机构改革背景,分析自然资源管理改革目标定位和面临挑战,明确未来自然资源管理改革价值导向与战略选择。研究方法:文献研究法,综合分析法。研究结果:自然资源管理改革的目标定位是实现"五统一",即统一调查评价、统一确权登记、统一"多规合一"和用途管制、统一资产管理和统一督查监管。针对当前自然资源管理理论储备不足、开发利用伦理缺乏科学引导、开发和保护矛盾冲突长期存在、新管理体制效能有待实践检验等挑战,自然资源管理改革亟需注重"公平效率"、强调"永续利用"、融合"三资一体"、构建"有效市场",切实重塑自然资源管理新格局。研究结论:新时代自然资源管理改革应该以权籍为基础,完善自然资源市场体系;以规划为龙头,构建国土空间规划体系;以"三线"为底线,推进全域国土空间用途管制;以整治为抓手,推进"山水林田湖草"生命共同体综合治理;以法制为保障,构建自然资源管理法律体系,从而塑造"三体系一管制一治理"的自然资源管理新格局。  相似文献   
993.
物流成本:价格上涨的重要推手   总被引:1,自引:1,他引:0  
物流成本是物流活动中所消耗的物化劳动和活劳动的货币表现,作为商品价值的重要组成部分,其上升必然推高商品价格,成为商品价格上涨的重要推手。它的上升主要会通过运输费用、经管费用、税费和制度性成本等路径推动商品价格上涨。要保持市场价格的基本稳定,必须通过改革公路收费、改进物流管理、培育物流企业、优化物流模式等措施,多管齐下遏制物流成本上升。  相似文献   
994.
ABSTRACT

Chinese domestic brands have developed rapidly in recent years, and yet few of them have entered global competition as product or service brands brands with exceptions such as Huawei. In addition, the evolution of Chinese brands has hardly been understood or introduced properly by international business educators. In this article, we identify the development patterns of Chinese domestic brands by using a local hotel brand as an example. Particularly, we examine and discuss how a Chinese brand can be established with specific positioning, brand image, and product offering, as well as how the brand can grow by vertical and horizontal extensions based on balancing market opportunities and the brand’s own capabilities. Moreover, we expect this research to facilitate the understanding of Chinese brands among international business education.  相似文献   
995.
The management of its people defines the way in which an organisation develops the capabilities to successfully compete in the market environment. Since the 1950s, approaches to staff management have evolved from traditional bureaucratic foundations to strategic planning exercises. This article uses a case study approach to investigate the way in which the process of organisational learning evolved in the development of personnel management practices. It suggests that although old and new practices were often overlaid on each other, ‘bridges’ developed which allowed the progressive development of new managerial processes.  相似文献   
996.
Many fundraising charities invest heavily in content marketing, often using consultants to direct their content-marketing efforts. Thus it is vital to establish whether certain key aims of content marketing suggested by literature in the field actually match the aspects of content marketing deemed most important by charity donors. This paper examines the significance attached by samples of charities, donors, and content-marketing consultancies to four possible major objectives of content marketing—the attainment of high–search-engine-results-page rankings, image enhancement through impression management, the stimulation of public perceptions of organizational transparency, and the creation of messages that “go viral.” Several major differences in perceptions emerged among the three groups, with substantial implications for how fundraising charities should manage their content-marketing programs and activities. Charity managements need to consider carefully and critically the possible returns on large-scale expenditures intended to pursue the putative aims of content marketing that are routinely advocated by practitioner and academic literature.  相似文献   
997.
The capability of website quality management to drive tourism customer e-loyalty is the key factor to achieve superior performance of destination marketing organization (DMO) website operations. The quality management approaches that revolve around website design quality and online relationship quality have drawn intensive attention from e-loyalty researchers in recent years. Thorough empirical investigation, however, still lacks in incorporating the integrative impact generated by the two approaches into DMO website quality management. The current study introduces and validates a theoretical framework based on such impact. As the research result reveals, six facets predict tourism customer e-loyalty directly: informational usefulness, navigational effectiveness, aesthetic appeal, entertainment, social presence, and self-concept congruity embedded in the functional, emotional, and symbolic dimensions of website design quality. Online relationship quality, comprised of relationship satisfaction and relationship trust, plays a partial mediator role in amplifying the e-loyalty driving effect of website design quality in the DMO website context.  相似文献   
998.
This article aims to investigate and examine Customer Interaction Management Capabilities (CIMaC) as mediator in the relation of Market Intelligence Quality (MIQ) and Customer-Centric Commitment (CCC) with New Product Performance (NPP). A Structural Equation Model (SEM) is used to test the empirical research design, using the data retrieved from micro-retail owners in Central Java, Indonesia. A Confirmatory Factor Model is used to test the multi-dimensionality of a theoretical construct (construct validity test). The findings show that only MIQ influences NPP, while CCC does not. However, CIMaC genuinely mediate the relationship between MIQ and CCC with NPP. By investigating the literature of various market learning, CRM, NPD, and entrepreneurship, this study offers a unique analysis about the market intelligence quality, customer-centric commitment and its impacts on customer interaction management capability, and the new product performance. Conceptual discussion and empiric results explore the previous research about market orientation culture on micro businesses.  相似文献   
999.
This paper examines the qualitative, quantitative, and geographical evolution (1987–2012) of the Blue Flag campaign and accreditation process in Spain, a leading coastal tourism destination heading the list of awards. The standard Blue Flag criteria for crowded, developed beaches are now adapting to new demands for natural beaches, but they still fail to capture essential sustainable tourism features, such as limiting user numbers, or preserving and restoring sand ecosystems. Given these shortcomings, some destinations are moving to alternative awards with a higher environmental commitment, such as EMS, ISO14001, and Eco-Management and Audit Schemes (EMAS). A cluster analysis of Blue Flag data for 983 beaches in Spain over 26 years revealed different behaviour patterns: established tourist areas that have always opted for the Blue Flag programme; tourist areas that adopted the Blue Flag early on but replaced it with ISO14001 and EMAS; recently developed destinations applying for the award to boost their tourism promotion; and tourist areas with no well-defined policy that have opted intermittently for Blue Flag. These profiles illustrate the different policies of Spain's Autonomous Regions, and they are useful for tourism managers to verify whether their destination's behaviour pattern contributes to sustainable tourism and matches strategic policies they have designed for them.  相似文献   
1000.
Global leaders agree on the need to substantially decarbonize the global economy by 2050. This paper compares potential costs associated with different policy pathways to achieve tourism sector emission reduction ambitions (?50% by 2035) and transform the sector to be part of the mid-century decarbonized economy (?70% by 2050). Investment in emissions abatement within the tourism sector, combined with strategic external carbon offsets, was found to be approximately 5% more cost effective over the period 2015–2050 than exclusive reliance on offsetting. The cost to achieve the ?50% target through abatement and strategic offsetting, while significant, represents less than 0.1% of the estimated global tourism economy in 2020 and 3.6% in 2050. Distributed equally among all tourists (international and domestic), the cost of a low-carbon tourism sector is estimated at US$11 per trip, equivalent to many current travel fees or taxes. Exclusive reliance on offsetting would expose the sector to extensive and continued carbon liability costs beyond mid-century and could be perceived as climate inaction, increasing reputational risks and the potential for less efficient regulatory interventions that could hinder sustainable tourism development. Effective tourism sector leadership is needed to develop a strategic tourism policy framework and emission measurement and reporting system.  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