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   1823篇
  免费   169篇
  国内免费   21篇
财政金融   61篇
工业经济   66篇
计划管理   537篇
经济学   429篇
综合类   194篇
运输经济   20篇
旅游经济   55篇
贸易经济   225篇
农业经济   291篇
经济概况   135篇
  2024年   15篇
  2023年   52篇
  2022年   90篇
  2021年   73篇
  2020年   143篇
  2019年   83篇
  2018年   68篇
  2017年   50篇
  2016年   44篇
  2015年   59篇
  2014年   115篇
  2013年   131篇
  2012年   147篇
  2011年   204篇
  2010年   119篇
  2009年   107篇
  2008年   103篇
  2007年   79篇
  2006年   86篇
  2005年   62篇
  2004年   38篇
  2003年   30篇
  2002年   18篇
  2001年   22篇
  2000年   9篇
  1999年   9篇
  1998年   8篇
  1997年   7篇
  1996年   9篇
  1995年   8篇
  1994年   3篇
  1993年   3篇
  1992年   1篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1988年   1篇
  1987年   1篇
  1986年   2篇
  1984年   2篇
  1982年   7篇
排序方式: 共有2013条查询结果,搜索用时 140 毫秒
61.
With increasing global competition in service sectors, innovative technologies have radically changed the tourism industry, and to be successful innovative products/services must have clear, significant points of difference that are related to needs in the market place. Furthermore, changes in consumer perceptions that emanate from an innovation are central to its effective product and service design. Although for most of us space travel is still a faraway dream, it is in fact a future probability that will increasingly attract travellers who seek new vacation experiences, and as a result, sustain academic interest. Thus, in initiating space tourism for the purposes of recreation, leisure and knowledge enhancement, a preliminary estimation of potential global demand characteristics that are specific to consumer innovators for space travel needs to be undertaken prior to promotion of research and development. In this context, this paper investigates both consumer attitudes towards space travel by analysing the components of motivated consumer innovativeness and the interest that potential consumers have in developing space tourism technology innovations within Taiwan. Consumer innovativeness is complex and comprised four innovativeness types, namely, social, functional, hedonic and cognitive. As product/service innovation development has been relatively unexplored in the mature industry of tourism, many business managers would welcome an understanding of which vacation travellers are most likely to be the earliest buyers of such an exciting new product. With data collected from a sample of 354 Taiwanese, this research uses mediated regression to examine the influence of the four types of consumer innovativeness on consumer's attitudes and acceptance of a space tourism technology innovation, and the mediating role perceived novelty plays in the relationship. The findings indicate that only hedonic and social innovativeness are associated with improved consumer attitude and that novelty partially mediates the relationship for those two types of consumer innovativeness. The implications for theory and practice are discussed. Limitations and directions for future research are also addressed.  相似文献   
62.
进行汕头市国土空间多功能利用效益评价,为汕头市科学利用土地,进行国土规划、提高国土利用效率奠定前提和基础。以可持续发展为目的,结合汕头市自然社会发展特点及国土空间利用现状,从社会、经济、资源与生态环境4个功能为切入点,建立4个功能层10个准则层27个指标的国土空间多功能利用效益评价指标体系,并采用熵值法对各功能进行评分。研究结果显示:汕头市国土空间经济功能评分最高,为汕头市国土空间主导功能,其次是经济、资源、环境功能,但社会、文化等功能较弱,各功能缺乏平衡。15年来,汕头市国土空间评价总体评分不断提高,表明国土利用效益在持续提高,但各功能发展不均衡以及人地矛盾依然突出,需要不断加强和完善国土空间规划。  相似文献   
63.
随着中国经济快速发展和人口集聚,建设用地需求快速增加,土地供需矛盾日益突出,资源保护和管理的压力逐渐加大。中国经济已步入新常态,经济结构转型倒逼土地供应结构优化调整。发达国家城镇化发展阶段起步较早,在土地节约集约利用与管理方面积累了宝贵经验。结合中国城市土地利用现状,借鉴美国、英国、德国等发达国家土地利用与管理经验,可从盘活存量土地、提高土地供给精准度、建立多元化供地机制三方面实现土地节约集约利用及有效管理,促进供给侧结构性改革。  相似文献   
64.
南京市休闲农业空间差异及其社会经济影响因素分析   总被引:1,自引:0,他引:1  
[目的]休闲农业在促进产业融合、带动过农业、农村发展方面发挥着重要作用,分析其空间分布特征及其社会经济影响因素,为休闲农业的健康可持续发展提供一定参考。[方法]文章以南京市为例,通过文献查阅法了解南京市休闲农业的资料、相关研究成果,结合实地调查法确保南京市休闲农业景点的真实性,采用空间结构分析法分析休闲农业空间分布差异,相关分析法分析其影响因素。[结果]南京市6个区的最临近指数均小于1,空间分布呈凝聚型,其中浦口区的分布密度最大,为0.035个/千km~2。休闲农业分布与地区GDP、农业产值、旅游发展水平显著相关,与产业结构、城镇和农村居民消费水平相关,但不显著,说明目前南京市第一、二、三产业融合有待进一步加强,休闲农业产品仍有提升空间。[结论]南京市休闲农业发展受社会经济发展的影响,因此需要基于休闲农业资源,差异化发展,同时协调发展休闲农业服务供应链,促进产业融合,完善休闲农业相关政策,耦合侧供给改革共同发展。  相似文献   
65.
The new information and communication technologies have made it possible to view films in different spaces. Using the symbolic interactionist framework as a frame of analysis, we interpret the meaning of the two experiences of viewing technology-mediated films in the home and in the cinema. We conducted field research during the first half of 2009, digitally recording 16 interviews with research participants living in Barcelona (Spain). The interviews were transcribed verbatim with the help of voice-recognition software. Reports from our research participants indicate that individuals considered only the cinema experience to be a true leisure activity, while the home experience was interpreted as a routine recreational activity. Therefore, the meanings of the film-viewing activity were associated with the symbolic properties of the frames of interpretation. Finally, we discuss the implications of these findings for the home as a unified centre where shared meanings are co-produced by family members.  相似文献   
66.
自然生态空间用途管制理论分析及管制策略研究   总被引:4,自引:0,他引:4  
研究目的:深入探讨自然生态空间用途管制作用机理及管制策略,助力完善国土空间用途管制制度。研究方法:文献分析法、归纳演绎法。研究结果:(1)模型能够较好反映自然生态空间与城镇空间和农业空间的联动效应;(2)阐明了自然生态空间用途管制行为主体、空间利用行为主体、空间利用行为以及用途管制客体之间的关系及管制作用机理;(3)明确"生态底线"导向的直接用途管制与"精明增长"导向的间接用途管制方式并行的管制策略。研究结论:建议完善国土空间规划体系,建立自然生态空间管制实施机制,加强自然生态空间用途管制要与其他自然资源管理改革制度的统一设计,强化实施自然生态空间管控质量监测评估。  相似文献   
67.
研究目的:从多元农业经营主体这一本源入手,运用共生理论,构建"以人为本、互利互惠"的生产空间重构路径,旨为其开展重构提供一新思路。研究方法:参与式农户调查,共生理论量化方法。研究结果:2010-2015年大柱村形成三对稳定的农业经营共生体,其共生关系均处于非对称互惠共生阶段;共生界面是影响农业经营主体共生关系变化的关键因素,其中劳动力、农业基础设施、惠农政策是大柱村主要共生界面阻尼介质。研究结论:多元农业经营主体是生产空间重构的本源,共生界面是关键,共生效益是目标,构建"强化主体共生能力—夯实共生界面—保障共生利益"的生产空间重构路径,能确保村域内"资源共享、义务共担、环境共建"的实现。  相似文献   
68.
69.
Research Summary: Research exploring investor reactions to sustainability has substantial empirical limitations, which we address with a large‐scale longitudinal financial event study of the first global sustainability index, DJSI World. We examine investor reactions to firms from 27 countries over 17 years that are added, deleted, or continue on the index. We find that once relevant controls and comparisons to observationally equivalent firms beyond the index are included, DJSI events have only limited significance and/or materiality. Nonetheless, investors' valuation of sustainability around the world has evolved over time, involving diminishing reactions to U.S. firms and increasing benefits, particularly of continuation on the index, over time. The study highlights the importance of careful analysis and longitudinal global samples in making inferences about the financial effects of social performance. Managerial Summary: The debate about how investors perceive corporate social responsibility (CSR) predates Milton Friedman's famous statement that the only social responsibility of business is to increase profits. Although extensive research has studied whether sustainability contributes to financial performance, we have yet to understand whether investors believe it pays off. This financial event study of reactions to the addition, continuation, and deletion from DJSI World, the first global sustainability index, shows that investors care little about DJSI announcements. Nonetheless, there is some evidence that global assessments of sustainability are converging and that investors may increasingly be valuing continuation on the DJSI, suggesting that firms may gain at least limited benefits from reliable sustainability activities.  相似文献   
70.
徐小虎 《价值工程》2014,(24):113-115
本文以某大空间飞机修理厂房为研究对象,采用Airpak软件对其原始分层空调设计方案气流组织进行模拟,并对方案可行性进行评价。  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