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   425篇
  免费   18篇
财政金融   57篇
工业经济   8篇
计划管理   72篇
经济学   107篇
综合类   4篇
运输经济   12篇
旅游经济   11篇
贸易经济   118篇
农业经济   16篇
经济概况   29篇
邮电经济   9篇
  2023年   7篇
  2022年   4篇
  2021年   10篇
  2020年   17篇
  2019年   24篇
  2018年   32篇
  2017年   20篇
  2016年   22篇
  2015年   11篇
  2014年   26篇
  2013年   54篇
  2012年   18篇
  2011年   24篇
  2010年   31篇
  2009年   27篇
  2008年   20篇
  2007年   14篇
  2006年   7篇
  2005年   9篇
  2004年   9篇
  2003年   4篇
  2002年   8篇
  2001年   2篇
  2000年   8篇
  1999年   6篇
  1998年   4篇
  1997年   3篇
  1996年   5篇
  1995年   2篇
  1994年   1篇
  1993年   2篇
  1992年   1篇
  1991年   2篇
  1990年   3篇
  1986年   1篇
  1984年   1篇
  1980年   1篇
  1979年   3篇
排序方式: 共有443条查询结果,搜索用时 31 毫秒
1.
The electric bike (e-bike) is emerging as a new sustainable transport mode in Norway and has the potential to lead to increased cycling among the population. However, little is known about psychosocial determinants of e-bike use. The aim of the study was to examine the role of normative and environmental beliefs, the perceived attributes of e-bikes, and innovativeness and demographical factors related to e-bike use in a Norwegian sample. An online survey was used to collect data from 910 respondents, including both e-bike users (252) and non-users (658). The respondents were recruited via a commercial panel (response rate 42.04%) and a Facebook post. A structural equation modeling analysis was used to analyze the data. The structural model had a good fit to the data. The results showed that attitudes towards e-bike use followed by innovativeness were the most important predictors of e-bike use. The normative processes measured within the Norm Activation Model activated positive attitudes towards e-bike use, which in turn predicted e-bike use. There was a negative relationship between e-bike and conventional bike use, while a positive relationship was found between car and e-bike use. The results are discussed with regard to their implications for interventions aiming to promote e-bike use.  相似文献   
2.
We explore the effects of the COVID-19 crisis and the associated restrictions to economic activity on paid and unpaid work for men and women in the United Kingdom. Using data from the COVID-19 supplement of Understanding Society, we find evidence that labour market outcomes of men and women were roughly equally affected at the extensive margin, as measured by the incidence of job loss or furloughing. But, if anything, women suffered smaller losses at the intensive margin, experiencing slightly smaller changes in hours and earnings. Within the household, women provided on average a larger share of increased childcare needs, but in an important share of households fathers became the primary childcare providers. These distributional consequences of the pandemic may be important to understand its inequality legacy over the longer term.  相似文献   
3.
Review of World Economics - The past 20 years in Europe have seen large swings in real and financial markets, and sudden stops of capital flows have exposed the fault lines of the European...  相似文献   
4.
Management Review Quarterly - As recent years have seen a growing interest in integrating consumer and sensory science, this paper aims at presenting a systematic literature review of empirical...  相似文献   
5.
Kemfert  Claudia 《Intereconomics》2021,56(1):20-22
Intereconomics - The new transatlantic partnership can be the cornerstone of this change: real climate protection without false truths and hidden smoke bombs, but a shift to a full supply of...  相似文献   
6.
The concepts of isotropy/anisotropy and separability/non‐separability of a covariance function are strictly related. If a covariance function is separable, it cannot be isotropic or geometrically anisotropic, except for the Gaussian covariance function, which is the only model both separable and isotropic. In this paper, some interesting results concerning the Gaussian covariance model and its properties related to isotropy and separability are given, and moreover, some examples are provided. Finally, a discussion on asymmetric models, with Gaussian marginals, is furnished and the strictly positive definiteness condition is discussed.  相似文献   
7.
Sahm  Claudia 《Intereconomics》2021,56(4):185-190
Intereconomics - Cutbacks in government spending slowed the recovery and led to lasting damage to workers and economic growth.  相似文献   
8.
9.

Background

Arterial hypertension is a widely spread disease which can lead to serious adverse events. On the one hand, an optimal therapy should be provided, and on the other hand it is of major importance to search actively for opportunities to further improve usual care.

Objectives

The objective is to conduct a literature review about “Improvement of health care by telemonitoring in patients with arterial hypertension”. Moreover, potential target groups for telemonitoring and the cost-effectiveness of telemonitoring are discussed.

Methods

Firstly, it was searched for relevant reviews with help of predefined search terms and in- and exclusion criteria (2005–2015). Subsequently, the second step consisted of a literature search for RCTs (2013–2015). The final studies (12 reviews/6 RCTs) were systematically analyzed and summarized in a qualitative way.

Results

It is clear that blood pressure telemonitoring is able to lower blood pressure additionally to usual care. With regards to emerging costs, telemonitoring is initially associated with higher costs. When long-term effects are taken into account, telemonitoring can be classified as cost-effective (1 study). Furthermore, specific patient subgroups (such as patients with uncontrolled hypertension) can particularly benefit from telemonitoring.

Conclusions

It is clear that telemonitoring results in an additional reduction of blood pressure compared to usual care. High risk groups can particularly benefit from telemonitoring. Future telemedical studies should focus more on health economic aspects as the current evidence is limited.
  相似文献   
10.
This article analyzes the content and evolution of research based on the Global Entrepreneurship Monitor (GEM) project. We conducted a rigorous search of articles published in journals within the Thomson Reuters’ Social Sciences Citation Index® through an exploratory analysis focused on articles using GEM data. The main findings of this study reveal that the institutional approach is the most commonly used conceptual framework. Also, although there are still few academic publications using GEM data, the number of articles is increasing, as are opportunities for future research.  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