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   4184篇
  免费   192篇
  国内免费   25篇
财政金融   129篇
工业经济   204篇
计划管理   1361篇
经济学   509篇
综合类   326篇
运输经济   174篇
旅游经济   227篇
贸易经济   336篇
农业经济   871篇
经济概况   264篇
  2024年   11篇
  2023年   38篇
  2022年   57篇
  2021年   91篇
  2020年   178篇
  2019年   94篇
  2018年   65篇
  2017年   120篇
  2016年   119篇
  2015年   127篇
  2014年   254篇
  2013年   350篇
  2012年   366篇
  2011年   450篇
  2010年   340篇
  2009年   245篇
  2008年   264篇
  2007年   244篇
  2006年   271篇
  2005年   204篇
  2004年   134篇
  2003年   101篇
  2002年   69篇
  2001年   53篇
  2000年   23篇
  1999年   18篇
  1998年   5篇
  1997年   18篇
  1996年   7篇
  1995年   1篇
  1993年   9篇
  1992年   6篇
  1991年   4篇
  1990年   2篇
  1988年   2篇
  1987年   2篇
  1986年   5篇
  1985年   7篇
  1984年   13篇
  1983年   4篇
  1982年   17篇
  1981年   1篇
  1980年   6篇
  1979年   5篇
  1978年   1篇
排序方式: 共有4401条查询结果,搜索用时 140 毫秒
41.
Digital transformation is rapidly changing the competitive landscape and the war on talent for today’s organizations. As part of this economy, organizations and their HR units must continuously reevaluate leadership structures and practices that exploit core competencies while allowing for innovation (i.e., leadership ambidexterity) and incorporate big data with predictive analytics. In this vein, understanding how HR executives can create better solutions around this problem remains sparse. Specifically, what frameworks can HR executives apply to identify potential alignment failures in leadership succession planning in light of newer emerging markets? What internal decision-making traps need to be recognized? Finally, what specific forms of data and evidence must test these plans for relevance and recharge and renew the talent-to-strategy pipeline? In this article, we examine these questions by reviewing the gaps in the literature and identifying through our four-step model how organizations can incorporate ambidexterity-building as a leadership succession planning practice.  相似文献   
42.
针对联合侦察筹划中任务规划阶段机动侦察平台阵位与路线确定困难的问题,提出了一种基于粒子群优化-稀疏A星(Particle Swarm Optimization—Sparse A-star,PSO-SAS)算法的规划方法。该方法综合考虑侦察装备机动性能以及敌火力威胁、地形等因素,在侦察阵位规划上,建立了阵位综合评估模型,并利用粒子群算法进行阵位寻优;在路线规划上,采用稀疏A*算法进行航迹规划,通过将机动性能、安全距离、路程等约束引入搜索过程,缩短最优路线的计算时间。仿真试验验证了所提方法生成的侦察阵位和路线能够满足侦察任务要求。  相似文献   
43.
In this paper we examine the question of whether and how municipal landscape plans exert a positive influence on and/or correlate with selected aspects of the landscape. To this end, a representative sample of municipal landscape plans in Germany and a statistical-quantitative evaluation approach are used to uncover correlations between planning and landscape development. As a result, we can show that municipalities which draw up a landscape plan have a higher proportion of natural areas and a lower hemeroby index, i.e. a lower level of human influence. The model also reveals a significant relationship between the quality of the landscape plan as well as its duration of impact and the density of landscape structural elements. It is also determined that municipal landscape plans help protect grassland areas. The indicator-based method provides impulses for the international discussion on the evaluation of plans.  相似文献   
44.
张支南  浦正宁  李明 《技术经济》2020,39(5):116-124
为考察全球价值链分工的宏观经济效应,本文基于2000—2014年全球102个经济体相关数据,探究了全球价值链贸易对国际经济周期协同性的影响。结果表明,全球价值链贸易深化了国际垂直型分工,显著提升了国际经济周期的协同性;无论是制造业还是服务业价值链贸易,对国际经济周期协同性都具有显著正向影响,侧面反映出服务业也在越来越深入地融入全球分工体系;价值链贸易对国际经济周期协同性的影响效应主要体现于发展中与发达经济体之间,发达经济体之间的经济周期协同性受其影响并不明显。  相似文献   
45.
This article explores the potential of the SDG framework for interdisciplinary research. The aim is to illustrate the process of creating a shared platform of operation by the clarifying the positive and negative interactions between societal demands for land use on a national and local level. The research question is answered by making use of the systemic approach introduced by Niklas Luhmann including his arguments about autopoietic communication systems reproducing themselves. An interdisciplinary research group is firstly applying the SDG framework to the demands for sustainable land use by activating the land consolidation in Denmark. By doing so a ‘national framework’ anchored in the SDG framework is created. Secondly, the national framework is applied to a multifunctional land consolidation project in a Danish case area. The findings from the mapping of interactions between societal demands on a concrete case area revealed that some indicators and societal demands are more prone to conflicts than others but also on the local level there may be variations. Thus, a localised and contextualised SDG framework has shown useful insight for future projects on sustainable land use including land consolidation projects. The paper concludes that the SDG framework may be used for facilitating interdisciplinary research, however there is also a need for guidelines and examples on how to integrate the framework in academia. The paper offers a suggestion for integrating the Agenda2030 and the SDG framework in projects about sustainable land use.  相似文献   
46.
City governments are embracing data-driven and algorithmic planning to tackle urban problems. Data-driven analytics have an unprecedented capacity to call urban futures into being. At the same time, they can depoliticize planning decisions. I argue that this shift calls urban studies scholars to investigate geographies of algorithmic violence—a repetitive and standardized form of violence that contributes to the racialization of space and spatialization of poverty. This article examines this broader phenomenon through the case of a proprietary market value assessment that is being used to guide development in cities across the United States. The assessment employs an algorithm that helps city officials make critical decisions about which neighborhoods to target for investment, disinvestment and public service upgrades or disconnections. I argue that the racial, infrastructural, and epistemological violence associated with this evaluation can potentially lead to a new kind of municipal redlining. The article brings insights from critical race theory into conversation with critical scholarship on algorithms by analyzing how algorithmic violence works through data-driven planning technologies to depoliticize and leverage power while further entrenching racism and inequality.  相似文献   
47.
This article examines the processes of urban commoning and its co-produced features of urbanity, making the claim that, through these processes, informality becomes translated into institutionalized city planning. Commoning is analysed through a comparative study that utilizes contingent features of urbanity and three modalities accommodating the informality–formality meshwork during urban change. The article contributes to research on urban transformations by integrating commons, informality dynamics and the constitution of state institutions. This focus is elaborated with reference to collective gardening practices in the context of two of the less studied European cities, Narva in Estonia and Tampere in Finland. The results of the study indicate that urban commoning takes place through delegating a public mandate and enacting uncertainty, two processes that informalize city government practices. Particular differences appeared in regard to the institutional porosity that enables unregulated spaces of collective gardening to be mobilized as part of urban politics. We argue that networked movements appear as an essential part of the urban logic of action producing meaningful connections in an informal–formal meshwork and bringing together multiple sites in the commoning process.  相似文献   
48.
Creative cities and culture-led development discourses have come under increasing scrutiny as elite-centric economic development agendas tend to trump ‘civic creativity’ ideals as imagined by Charles Landry. In South Africa, culture-led development and cultural policy tends to primarily mimic that of the global North, largely focusing on culture as a catalyst for economic and property development. Public art commissioning processes tend to focus on decorative projects as part of urban upgrading, which are often associated with ensuing gentrification and displacement of the urban poor. In contrast to focusing on these kinds of regeneration strategies, this article investigates Dlala Indima, a hip-hop-led graffiti project in a rural township in the Eastern Cape of South Africa. This article situates graffiti as a critical social and spatial practice to argue that this case challenges normative cultural planning paradigms. Dlala Indima's work is an alternative approach to cultural development by and for young people who are usually marginalized by the mainstream practice of culture-led economic development. The project challenges dominant creative cities and culture-led development discourses in three ways: first, it challenges the normative processes of regeneration; secondly, it grounds participatory practice; and finally, it shifts participation from ‘tyranny to transformation’ through the ubuntu of hip-hop, the notion of ubuntu being based on the communitarian notion of ‘ubuntu, ngubuntu ngabantu’—‘I am because you are’.  相似文献   
49.
赵峰  王泽  李轶 《物流科技》2020,(1):30-34,44
在烟草商业企业中,物流是其重要的环节,是连接客户与烟草企业间的纽带,其卷烟配送线路设计的合理与否直接影响到卷烟的配送效率和配送成本,就如何合理的规划线路成为卷烟配送的关键问题。文章以Q烟草公司为例,运用先分组后路线的两阶段法对问题进行求解,先利用K-means聚类算法对区域进行划分,再考虑工作量均衡的条件下引入遗传算法对区域进一步调整,最后利用混合遗传算法对各配送区域进行线路优化,通过实例从线路数、车辆数、空载率、配送里程及总成本等指标上可以看出两阶段法的配送效果更优。  相似文献   
50.
我国现行军人养老保险是军队统筹,且保障范围狭窄、制度衔接不畅、实际养老待遇较低、财政负担过重、基金管理效率低下;为实现养老保险制度全民统筹和切实保障军人的养老权益,应构建社会统筹与个人账户相结合、辅以年金账户的新型军人养老保险制度。军人养老保险制度的转轨成本来源于当前军人养老保险制度下隐性债务的显性化,采用系统动力学模型对军人养老保险制度的转轨成本进行模拟测算,结果表明:截至2090年底转轨成本将全部显性化,“老人”和“中人”的转轨成本都呈先增后减的趋势,2035—2065年的转轨成本最高;借助社会统筹账户资金积累的缓冲和人口年龄与人口结构的变化,能够分散制度转轨带来的财务支付风险,改革不会对政府财政带来巨大压力。因此,应坚持养老保险社会统筹的改革方向,积极推进军人养老保险制度改革。  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