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   1800篇
  免费   52篇
  国内免费   22篇
财政金融   63篇
工业经济   43篇
计划管理   363篇
经济学   253篇
综合类   253篇
运输经济   45篇
旅游经济   220篇
贸易经济   237篇
农业经济   113篇
经济概况   284篇
  2024年   2篇
  2023年   25篇
  2022年   33篇
  2021年   39篇
  2020年   72篇
  2019年   48篇
  2018年   39篇
  2017年   63篇
  2016年   60篇
  2015年   65篇
  2014年   131篇
  2013年   241篇
  2012年   149篇
  2011年   171篇
  2010年   138篇
  2009年   111篇
  2008年   123篇
  2007年   95篇
  2006年   91篇
  2005年   64篇
  2004年   32篇
  2003年   22篇
  2002年   12篇
  2001年   9篇
  2000年   11篇
  1999年   6篇
  1998年   5篇
  1997年   2篇
  1996年   4篇
  1995年   1篇
  1993年   2篇
  1984年   4篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1979年   1篇
排序方式: 共有1874条查询结果,搜索用时 0 毫秒
51.
Purpose: Backpacker tourism is flourishing in this century as the high development of Internet technology which enables travellers to search for resources they need easier. The research goal of this study was to exam how virtual skill and collective efficacy affect process innovation capability and subsequent team performance of collaborative design team in a virtual community. Design/methodology/approach: In this study, we formulated the virtual team model from the perspectives of open innovation paradigm and virtual competence, and we collected virtual community participation samples from the online communities. Invitation emails were delivered to numerous trip plan initiators in two well-known online travel communities for filling survey questionnaires for this study. In total, 3000 invitation messages were mailed, of which 373 were returned completed. The model and hypotheses were tested by structural equation modelling. Findings: Virtual competence, including collective efficacy and virtual media skill, is the essential key to facilitate process innovation capability and subsequent team performance success. Besides, knowledge sharing significantly moderates the relationship between process innovation capability and the team performance. Originality/value: Backpackers in the online travel communities have to have not only the willingness to collaborate, but also the abilities of using the correct tool to help with their tasks. When a self-efficacy gets into collective efficacy, it enables the collaborative team to develop with good virtual competencies. Accordingly, trip plan initiator and participants of a virtual team are as expertise contributors between conformity in online communities and online compulsive control tendencies.  相似文献   
52.
为探索春季石家庄市水体浮游植物群落组成与结构特点,及其主要环境影响因素,对水体中浮游植物的种类组成、细胞密度、环境因子等指标进行了调查,分析了其物种优势度、多样性指数,并对各水体的浮游植物组成与环境因子进行了聚类分析和相关性分析。结果发现:在春季的石家庄市水体中,共检出浮游植物7门47属76种,以绿藻门种类最多,约占总数的39.47%,其次为硅藻和蓝藻,裸藻、金藻、黄藻和甲藻种类很少且仅在个别采样点位出现。水体中硅藻细胞密度最高,平均为1.0×10~7 cells/L,占丰度组成的61.84%,其次为绿藻和蓝藻。值得注意的是,岗南水库是所有水体中仅有的金藻丰富型水体,它的金藻细胞密度高达4.5×10~6 cells/L。物种优势度分析和多样性指数分析显示,石家庄市水体中以中度富营养型指示藻类为优势类群,基本处于中度污染水平;水体聚类分析表明,石家庄市水体的浮游植物组成受整体水环境因素影响不明显;而单环境因子数据及其与浮游植物的相关性分析表明,石家庄市水质酸化严重(pH值低于6.0),除科大牧星湖和岗南水库外,多数水体处于劣V类水平,主要超标物为pH值、总磷、总氮和COD,而这可能是导致蓝藻、绿藻等耐污性种类大量繁殖的主要因素。因此,对石家庄市水体中浮游植物群落组成与结构变化的生物学监测,是进行石家庄市地表水水质监测及生态保护的重要途径。  相似文献   
53.
Anxieties over the potential impacts of climate change, often framed in apocalyptic language, are having a profound, but little studied effect on the contemporary Western urbanscape. This article examines the ways in which current theorizations of ‘ecological gentrification’ express only half the process, describing how green space is used for social control, but not how ecology is used as a justification regime for such projects. As urbanites seek out housing and living practices that have a lower environmental impact, urban planners have responded by providing large-scale regeneration of the urbanscape. With the demand for this housing increasing, questions of inequality, displacement and dispossession arise. I ask whether apocalyptic anxiety is being enrolled in the justification regimes of these projects to make them hard to resist at the planning and implementation stages. The article shows that, in capitalizing on collective anxiety surrounding an apocalyptic future, these projects depoliticize subjects by using the empty signifier, ‘Sustainability’, leading them into an immuno-political relationship to the urbanscape. This leaves subjects feeling protected from both responsibility for, and the impacts of, climate change. Ultimately, this has the consequence of gentrification coupled with potentially worsening consumptive practices, rebound effects and the depoliticization of the environmentally conscious urbanite.  相似文献   
54.
新零售模式下社区生鲜“最后500m”的冲刺已成为生鲜农产品快速配送的关键问题。基于目前已有的配送模式:“社区+便利店”模式、第三方配送以及众包模式,通过层次分析法从服务水平、配送成本、客户体验三个方面对三种配送模式进行量化分析,得出每种配送模式在各层次的权重。研究结果表明配送中降低配送成本是关键,减少货物赔损率、提高客户满意度才能实现有效率的配送。  相似文献   
55.
ABSTRACT

While online communities may enhance firm performance, they commonly fail to retain members. To address this challenge, scholars and managers call for the use of gamification. However, despite gamification’s growing use in online communities, insight into its effect on member experience and behaviours remain limited. We hypothesise that gamification affects member-perceived distributive and procedural justice. In experimental studies, we assess the impact of in-gamification perceived justice on member contributions. We find that while high in-gamification perceived procedural justice acts as a necessary prerequisite for member contributions, high distributive justice can reduce game-related uncertainty, thereby rendering gamified practices less fun, particularly for low-engaged community members that tend to value rewards. We add to the literature by (a) pinpointing the core role of perceived justice in the persistence of online communities, and (b) unveiling that high distributive justice can lead gamification to backfire in online communities by affecting member experience and contributions.  相似文献   
56.
Abstract:

This article is a response to two crucial ideas about progressive institutional change: the first is J. Fagg Foster’s principle of “minimal social dislocation,” which asserts that socio-economic changes should be implemented gradually, to avoid unraveling the social fabric of the community; the second is Karl Polanyi’s principles of redistribution of rights and powers by relevant authorities and reciprocity, a symmetrical and highly personalized exchange system, which is likewise a protective mechanism that society employs against anonymity and disintegration brought about by unregulated market. Using lessons learned in the thirty-year transition to market in post-Soviet countries, this article argues that to commence progressive institutional change in the honesty- and transparency-resistant cultures of former Soviet states, impersonal exchange and impartial rule of law must be given far greater weight than personalization of contacts and continuation of cultural traditions.  相似文献   
57.
This study draws on customer-dominant logic and self-expansion theory to examine the drivers of customer engagement behaviors in the context of emerging online interest communities. The engagement behaviors seen in online communities are operationalized into four types: augmenting, co-developing, influencing, and mobilizing. Goal pursuit (gratifying-the-self, enabling-the-self, and enriching-the-self) and emotional attachment to the community are found to be the key antecedent factors of these behaviors. The attainment of gratifying-the-self has a direct influence on these behaviors, whereas the attainment of enabling-the-self and enriching-the-self influences them via emotional attachment to the community.  相似文献   
58.
社区公共物品协同供给系统主体协同关系良性有序,对于促进系统内供给主体的互动关系、强化协同意愿、建构整体合作网络、明晰协同合作路径、保障协同行为高效、提升供给协同效能具有关键支撑作用。运用博弈论理论和方法,探究社区公共物品协同供给系统内“政府-企业-社会组织-居民”多元主体间的供给协同博弈关系,建立“囚徒困境”模型分析系统内供给企业主体间协同关系,提出实现系统内供给企业主体间协同供给达到最佳效果的对策;同时利用静态博弈分析,研究供给企业主体与政府间通过博弈如何实现共赢,进而分析提出如何利用博弈实现供给主体间的协同合作。进一步采用上海、北京的实例阐释社会组织、供给企业与居民之间的协同关系,并提出在系统内各主体间如何进行协同合作。  相似文献   
59.
网络社区环境下企业营销存在的问题是暴力营销帖、营销信息遭质疑、即时沟通有待提高。为有效解决这些问题,企业应实施话题营销策略,提高企业的社区关注度,增加用户对企业的认知度;通过意见领袖评价企业产品的质量特性以及不同产品间的优缺点,对用户消费行为发挥导向作用;配备专门的社区营销人员,及时对社区舆论进行引导,传播产品信息,引导用户的消费观;企业应借助或建立恰当的广告平台,在不同的社区内投放不同的广告,创建新型的广告模式,从而有效提升企业营销效果。  相似文献   
60.
This study explores residents’ attitudes toward future tourism development based on their community well-being (CWB) and community attachment. Focusing on the case of Gamcheon Culture Village in Busan, South Korea, which was developed during an urban regeneration project in 2009, an exploratory factor analysis was conducted. The main findings of this study are: (1) CWB is supported by five variables including income effects, social participation, safety service, infrastructure service, and environmental effect; (2) not only does CWB influence community attachment but attachment also effects residents’ attitudes; and (3) the most effective variable of CWB is income effect, and safety service for community attachment. These results can help to provide effective strategies to encourage residents to have positive attitudes about further tourism development in a community-based tourism destination.  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