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   936篇
  免费   8篇
  国内免费   2篇
财政金融   74篇
工业经济   229篇
计划管理   65篇
经济学   132篇
综合类   29篇
运输经济   12篇
旅游经济   14篇
贸易经济   358篇
农业经济   17篇
经济概况   16篇
  2022年   2篇
  2021年   2篇
  2020年   7篇
  2019年   16篇
  2018年   3篇
  2017年   11篇
  2016年   4篇
  2015年   9篇
  2014年   15篇
  2013年   51篇
  2012年   19篇
  2011年   17篇
  2010年   12篇
  2009年   26篇
  2008年   18篇
  2007年   15篇
  2006年   20篇
  2005年   4篇
  2004年   3篇
  2003年   7篇
  2001年   2篇
  2000年   4篇
  1999年   2篇
  1997年   3篇
  1995年   1篇
  1994年   1篇
  1985年   128篇
  1984年   142篇
  1983年   111篇
  1982年   79篇
  1981年   46篇
  1980年   66篇
  1979年   46篇
  1978年   34篇
  1977年   19篇
  1975年   1篇
排序方式: 共有946条查询结果,搜索用时 15 毫秒
81.
Germany and the USA have among the highest motorization rates in the world. Yet Germans make a four times higher share of trips by foot, bike, and public transport and drive for a 25% lower share of trips as Americans. Using two comparable national travel surveys this paper empirically investigates determinants of transport mode choice in Germany and the USA.In both countries higher population density, a greater mix of land-uses, household proximity to public transport, and fewer cars per household are associated with a lower share of trips by automobile. However, considerable differences remain: all groups of society in America are more car-dependent than Germans. Even controlling for dissimilarities in socio-economic factors and land-use, Germans are more likely to walk, cycle, and use public transport. Moreover, Americans living in dense, mixed-use areas, and close to public transport are more likely to drive than Germans living in lower density areas, with more limited mix of land-uses, and farther from public transport. Differences in transport policy that make car travel slower, more expensive, less convenient, and alternatives to the automobile more attractive in Germany may help account for the remaining differences.  相似文献   
82.
Background and aims: IDegLira, a fixed ratio combination of insulin degludec and glucagon-like peptide-1 receptor agonist liraglutide, utilizes the complementary mechanisms of action of these two agents to improve glycemic control with low risk of hypoglycemia and avoidance of weight gain. The aim of the present analysis was to assess the long-term cost-effectiveness of IDegLira vs liraglutide added to basal insulin, for patients with type 2 diabetes not achieving glycemic control on basal insulin in the US setting.

Methods: Projections of lifetime costs and clinical outcomes were made using the IMS CORE Diabetes Model. Treatment effect data for patients receiving IDegLira and liraglutide added to basal insulin were modeled based on the outcomes of a published indirect comparison, as no head-to-head clinical trial data is currently available. Costs were accounted in 2015?US dollars ($) from a healthcare payer perspective.

Results: IDegLira was associated with small improvements in quality-adjusted life expectancy compared with liraglutide added to basal insulin (8.94 vs 8.91 discounted quality-adjusted life years [QALYs]). The key driver of improved clinical outcomes was the greater reduction in glycated hemoglobin associated with IDegLira. IDegLira was associated with mean costs savings of $17,687 over patient lifetimes vs liraglutide added to basal insulin, resulting from lower treatment costs and cost savings as a result of complications avoided.

Conclusions: The present long-term modeling analysis found that IDegLira was dominant vs liraglutide added to basal insulin for patients with type 2 diabetes failing to achieve glycemic control on basal insulin in the US, improving clinical outcomes and reducing direct costs.  相似文献   
83.
The long‐term fracturing of the labour movement has led to increased attention to employee coping practices under new management practices and labour processes. However, the literature caters little for the recent rise of employees taking to social networking sites (SNSs), such as Facebook, to find ways to cope with the pressures of contemporary employment. To explore the self‐organised coping qualities of SNSs, interviews were conducted with front line workers, employed by a large anti‐trade union US retailer, who contribute to a self‐organised Facebook group set up as a place for fellow employees to deal with collective employment‐related problems. The main findings suggest employee self‐organised Facebook groups represent an important development and extension to the coping practices available to individual and groups of employees. The main implication of the findings is that Facebook groups appear to strengthen and widen the options for employee resilience in an age of continuing trade union retreat.  相似文献   
84.
The price-oriented experience curve has been widely utilized as a model to design marketing strategies. Yet, it is cost over which many firms exercise the most control. This article explores the cost-oriented learning curve in conjunction with the product life cycle model as joint strategy constructs. Implications of variations in the learning curve parameters are examined.  相似文献   
85.
The Newly Industrialized and Developing Asian countries represent a substantial and growing market for capital goods and for industrial components. Industrial buyer behavior among firms in these countries is different from that exhibited by firms in the advanced, industrialized countries. Therefore, different marketing strategies are required to penetrate NIC and LDC markets. This article discusses industrial buyer behavior in the NICs and LDCs and makes recommendations for marketing strategies.  相似文献   
86.
87.
This article reports on a survey of the problems faced by industrial distributors. Five major problem categories are identified and managerial implications are derived from the findings.  相似文献   
88.
As local governments and corporations promote ‘climate friendliness’, and a low-carbon lifestyle becomes increasingly desirable, more middle- and upper-income urban residents are choosing to live near public transit, on bike- and pedestrian-friendly streets, and in higher-density mixed-use areas. This rejection of classical forms of suburbanization has, in part, increased property values in neighborhoods offering these amenities, displacing lower-income, often non-white, residents. Increased prevalence of creative and technology workers appears to accelerate this trend. We argue that a significant and understudied socio-environmental contradiction also occurs where the actual environmental outcomes of neighborhood transformation may not be what we expect. New research on greenhouse gas emissions shows that more affluent residents have much larger carbon footprints because of their consumption, even when reductions in transportation or building energy emissions are included. We describe an area in Seattle, Washington, the location of Amazon's headquarters, experiencing this contradiction and show a distinct convergence of city investments in low-carbon infrastructure, significant rises in housing prices and decreases in lower-income and non-white residents. We conclude with a discussion of a range of issues that require more attention by scholars interested in housing justice and/or urban sustainability.  相似文献   
89.
Unsanctioned tent cities are increasing in number in cities throughout the western United States. Scholars explain the phenomenon as homeless people asserting their ‘right to the city’ or as ‘managed marginality’. These explanations capture much of the socio-political relationship between local government and homeless populations, but do not explain the long-term persistence of tent cities and the fluctuating nature of their visibility. A spatial history of informal encampments in Sacramento at three key moments—the founding of the city, the Great Depression and the Great Recession—reveals a long-term ebb and flow of tent cities occupying close-to-the-center, urban vacancies. Urban vacancies arise from the partitioning of the city into specific purposes, places and people, a taken-for-granted perception of how cities should be. The visibility of tent cities disrupts this aesthetic notion of stability and growth as homeless people use the tent to protest their isolation and exclusion.  相似文献   
90.
A recent article [Stevenson and Page, Industrial Marketing Management 8, 94–100 (1979)] addressed the issue of how industrial marketers determine if their firms can use national account marketing. Once that decision is made, a next logical step is to determine which customers should be classified as national accounts. This article discusses appropriate classification criteria that industrial marketers can use to make such decisions. The information presented here is based on a study of national account marketing.  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