全文获取类型
收费全文 | 3365篇 |
免费 | 103篇 |
专业分类
财政金融 | 444篇 |
工业经济 | 131篇 |
计划管理 | 558篇 |
经济学 | 713篇 |
综合类 | 14篇 |
运输经济 | 24篇 |
旅游经济 | 33篇 |
贸易经济 | 1045篇 |
农业经济 | 57篇 |
经济概况 | 222篇 |
邮电经济 | 227篇 |
出版年
2023年 | 30篇 |
2022年 | 28篇 |
2021年 | 48篇 |
2020年 | 64篇 |
2019年 | 68篇 |
2018年 | 179篇 |
2017年 | 172篇 |
2016年 | 173篇 |
2015年 | 124篇 |
2014年 | 160篇 |
2013年 | 461篇 |
2012年 | 136篇 |
2011年 | 162篇 |
2010年 | 188篇 |
2009年 | 151篇 |
2008年 | 147篇 |
2007年 | 106篇 |
2006年 | 69篇 |
2005年 | 68篇 |
2004年 | 49篇 |
2003年 | 60篇 |
2002年 | 73篇 |
2001年 | 49篇 |
2000年 | 61篇 |
1999年 | 37篇 |
1998年 | 33篇 |
1997年 | 19篇 |
1996年 | 25篇 |
1995年 | 15篇 |
1994年 | 25篇 |
1993年 | 20篇 |
1992年 | 14篇 |
1991年 | 21篇 |
1990年 | 20篇 |
1989年 | 20篇 |
1986年 | 14篇 |
1985年 | 18篇 |
1984年 | 16篇 |
1983年 | 24篇 |
1982年 | 22篇 |
1981年 | 20篇 |
1980年 | 15篇 |
1979年 | 19篇 |
1978年 | 13篇 |
1977年 | 16篇 |
1976年 | 19篇 |
1975年 | 17篇 |
1974年 | 13篇 |
1972年 | 11篇 |
1971年 | 13篇 |
排序方式: 共有3468条查询结果,搜索用时 15 毫秒
91.
Daniel Scott Stefan Gössling C. Michael Hall Paul Peeters 《Journal of Sustainable Tourism》2016,24(1):52-72
Global leaders agree on the need to substantially decarbonize the global economy by 2050. This paper compares potential costs associated with different policy pathways to achieve tourism sector emission reduction ambitions (?50% by 2035) and transform the sector to be part of the mid-century decarbonized economy (?70% by 2050). Investment in emissions abatement within the tourism sector, combined with strategic external carbon offsets, was found to be approximately 5% more cost effective over the period 2015–2050 than exclusive reliance on offsetting. The cost to achieve the ?50% target through abatement and strategic offsetting, while significant, represents less than 0.1% of the estimated global tourism economy in 2020 and 3.6% in 2050. Distributed equally among all tourists (international and domestic), the cost of a low-carbon tourism sector is estimated at US$11 per trip, equivalent to many current travel fees or taxes. Exclusive reliance on offsetting would expose the sector to extensive and continued carbon liability costs beyond mid-century and could be perceived as climate inaction, increasing reputational risks and the potential for less efficient regulatory interventions that could hinder sustainable tourism development. Effective tourism sector leadership is needed to develop a strategic tourism policy framework and emission measurement and reporting system. 相似文献
92.
Stefan Gössling 《Journal of Sustainable Tourism》2018,26(2):292-306
Learning is often a central element of tourism. Tourists can learn actively, i.e. with a specific purpose, as well as passively through the comparison of values, norms and customs. It has been argued that travel supports active learning that has positive outcomes for sustainability, for instance, in the context of conservation. Yet, the complexity of active and passive learning processes and their outcomes for environmental sustainability and sustainable lifestyles remain insufficiently understood. Against this background, the paper discusses selected learning outcomes for transportation (air travel), accommodation (hotels) and activities (theme park visits). Findings suggest that “desirable” learning (defined as pro-sustainable development learning) in tourism may be very limited, while in particular, passive learning processes which redefine social norms frequently have outcomes that are largely detrimental to sustainable lifestyles. They include forms of moral licensing, the diffusion of responsibilities as well as the attenuation of the negative consequences of travel. Given the economic, social and cultural importance of tourism vís-a-vís its global implications for environmental sustainability, learning outcomes in tourism deserve to be studied in greater detail, while strategies need to be devised to enhance sustainable learning effects. 相似文献
93.
94.
Agriculture has played a central role in Africa's long‐term economic development. Previous research has argued that the low productivity of African economies has posed significant challenges to African efforts to produce an agricultural surplus or to develop commercial agriculture. Low agricultural productivity has also served as a key explanation for the transatlantic slave trade, on the basis that it was more profitable to export humans overseas than to grow and export produce. However, the field has suffered from a lack of comparable empirical evidence. This article contributes to this field by presenting quantitative data on historical land and labour productivity in Africa, from a case study of the agricultural productivity of Senegambia in the early nineteenth century. Focusing on five key crops, our results suggest that both land and labour productivity was lower in Senegambia than it was in all other parts of the world for which we have found comparable data. This article thus lends support to claims that stress ecological factors as one of the main determinants of Africa's historical development. 相似文献
95.
96.
Saskia Böcking 《Publizistik》2007,52(4):485-501
Parents’ influence on and monitoring of children’s television use has been investigated intensely. In recent years international research has identified different environmental and family factors which influence active mediation, restrictive mediation, and co-viewing. However, there has been no systematic simultaneous comparison of the impact of these factors in German-speaking Switzerland. Therefore the present study analyzes the impacts of parental attitudes as well as family and environmental factors on parental mediation of children’s TV use simultaneously. 252 parents of children aged 3 to 14 answered questions concerning the impact factors, their mediation behaviour as well as children’s media use. Results confirm findings from international research: Most important for parental mediation styles are parental attitudes and the family communication style as well as children’s age. Structural and other sociodemographical factors seem to be less important. 相似文献
97.
98.
Vivek K. Velamuri Anne-Katrin Neyer Kathrin M. Möslein 《Journal für Betriebswirtschaft》2011,61(1):3-35
This systematic review analyses literature on the work of hybrid value creation, i.e. the process of generating additional value by innovatively combining products (tangible component) and services (intangible component). A state of the art report on hybrid value creation is delivered by first systematically identifying and then analyzing 169 publications focusing on hybrid value creation. The identified publications are clustered into eight categories based on their links and interactions and thus a mapping of this evolving field is suggested. A discussion and reflection of the findings with respect to the pervasiveness of literature and the research methodologies used is provided. The paper concludes by identifying some dominant strategic gaps in the overall research landscape and provides directions for future research. 相似文献
99.
Sönke Häseler 《能源经济杂志》2014,38(3):151-162
To continue balancing supply and demand for power is a growing challenge on Germany’s path to producing 80?% of its electricity from renewable sources by 2050. Large-scale investment into a range of technologies will be required to provide the flexibility necessary for balancing. This paper introduces a simple analytical framework to evaluate the German legislator’s numerous efforts to address this challenge. It then proceeds to make two proposals as to how flexibility can be sourced more cheaply. Priority should be given to measures that enable the existing power markets to generate stronger rewards for flexibility. We thus call for financial incentives for variable electricity tariffs to elicit more consumer response and for investment subsidies instead of feed-in tariffs for more demand-oriented renewable power generation. If additional explicit incentives for flexibility are necessary, they can be provided through a market for flexibility. 相似文献
100.
Based on a longitudinal case study of four interorganizational product development collaborations, this paper identifies a lure to cross‐functional integration that has hereto been neglected. In particular, findings suggest that when the buyer firm separates the Research and Development (R&D) Department from the Procurement Department, the two departments play a good cop–bad cop strategy toward the supplier. Thereby, they are able to foster a high level of goodwill trust between R&D personnel of the collaborating firms, while procurement personnel maintain a high level of formal control. Using an intricate sample design with polar cases, the study shows that cross‐functional integration of the two departments hampers interorganizational goodwill trust at the benefit of formal control. The findings offer a way forward for managers seeking to reap the benefits of collaboration, while limiting their exposure to the associated risks. 相似文献