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   118篇
  免费   13篇
  2024年   2篇
  2023年   7篇
  2022年   2篇
  2021年   3篇
  2020年   7篇
  2019年   6篇
  2018年   4篇
  2017年   7篇
  2016年   9篇
  2015年   5篇
  2014年   11篇
  2013年   28篇
  2012年   10篇
  2011年   2篇
  2010年   3篇
  2009年   4篇
  2008年   3篇
  2007年   2篇
  2005年   2篇
  2004年   1篇
  2003年   2篇
  2002年   2篇
  1999年   3篇
  1998年   3篇
  1997年   2篇
  1986年   1篇
排序方式: 共有131条查询结果,搜索用时 15 毫秒
1.
Scientists advise limiting global warming to 1.5°C with substantial actions by 2030. Our viewpoint argues that climate response strategies in Canada have underemphasized and underestimated the potential contribution deep energy retrofits can make to greenhouse gas (GHG) emissions reductions, leading to inadequate responses in the building sector, and that Canada can (and should) be ambitious with building retrofits over the next decade. GHG savings from building retrofits can be realized more quickly than GHG reductions from other sectors, and either deliver net cost savings or are cost‐effective when compared to other mitigation measures. Retrofits can also provide social and economic benefits, such as improved health and comfort, and lower energy costs. This paper reviews energy use and building retrofits in Canada and argues the following should be implemented: (1) focus innovation on deep energy retrofit processes, not singular retrofit actions; (2) maximize both social and environmental benefits; (3) improve data gathering and availability for analysis and delivery; (4) innovate for a process of decisions and to avoid “dropouts” during the retrofit process; and (5) focus innovation on business models that maximize benefits.  相似文献   
2.
A new generation of greenways has emerged in recent years, the most ambitious of which are nationwide, interconnected networks of multi-use, multi-purpose greenways and trails, clustered under a single national vision. However, because these initiatives have been the focus of so few research studies, opportunities to glean lessons from their planning and implementation have been limited. This paper contributes to addressing this knowledge gap by presenting a comparative account of two networks, the Trans Canada Trail in Canada and Sendero de Chile in Chile. Using document analysis and interviews with officials closely involved in their development, the evolution of both networks is documented over time, emphasizing similarities and differences related to their planning and implementation. Both initiatives have faced significant challenges in reaching their connection goals and have availed themselves of a diverse range of opportunities and strategies to advance their agendas. A simple model of a virtuous cycle is proposed to highlight the positive feedback—between political and public support, sustained funding, partnership development, accessibility for urban residents, and connectivity of the network—generated by sustained network expansion over time. It is hoped that the insights offered from this analysis may offer guidance to inform the development of similar scale projects elsewhere.  相似文献   
3.
Critical physical geography (CPG) calls for integrative research on material landscapes and the socio-political dynamics of scientific knowledge production. Network analysis, a rich tradition of tools and approaches for analyzing relational information, has seen little use in the CPG literature to date. This represents a fruitful opportunity, as many of CPG's core interests—knowledge politics, histories of scientific concepts, and ecosocial relations—can be effectively analyzed using network techniques. In this article, I argue for adapting network approaches to CPG. First, I provide an overview of various network concepts, approaches, and their origins. I then discuss bibliometric network techniques for “science mapping” including co-word, co-authorship, and citation analyses. Next, I describe discourse network analysis, a recent mixed-method approach from political science. Finally, I discuss overlaps with emerging approaches from qualitative and visual network analysis. In each section, I provide existing and hypothetical examples, as well as software and visualization techniques, that demonstrate how network approaches could add new insights to CPG and related scholarship. Linking CPG with the diverse traditions of network analysis has the potential to produce new empirical understandings and bring the field into conversation with a growing body of research that spans the social sciences, natural sciences, and humanities.  相似文献   
4.
In the last decade, conversations around queering of GIScience emerged. Drawing on literature from feminist and queer critical GIS, with special attention to the under‐examined political economy of GIS, I suggest that the critical project of queering all of GIS, both GIScience and GISystems, requires not just recognition of the labour and lives of queers and research in geographies of sexualities. Based upon a queer feminist political economic critique and evidenced in my teaching critical GIS at two elite liberal arts colleges, I argue that the “status quo” between ESRI and geography as a field must be interrupted. Extending a critical GIS focus beyond data structures and data ethics, I argue that geographic researchers and instructors have a responsibility in queering our choice and production of software, algorithms, and code alike. I call this production and choice of democratic, accessible, and useful software by, for, and about the needs of its users, good enough software.  相似文献   
5.
6.
This article chronicles and contextualizes the creation of a Tomb of the Unknown Soldier in Canada’s capital. In so doing, it traces the myriad considerations, as well as complexities — political, procedural, and practical — that abounded in bringing this major memorial installation into being, namely the repatriation, from a Commonwealth War Graves Commission cemetery in France, of a Canadian unknown soldier of the Great War and his ceremonial reburial in Ottawa. Moreover, it argues that the Tomb of the Unknown Soldier, situated within an existing monumental space, functions, in the coinage of geographer Owen Dwyer, as an allied symbolic accretion to the National War Memorial.  相似文献   
7.
8.
Erasmus is regarded as a European success story: an example of cross-border cooperation and an opportunity for students to improve their inter-cultural skills and work capacities. This article takes an in-depth look at this success, examining recent trends in Erasmus mobility. Analysis shows that while certain countries have greater numbers of students outgoing than incoming, the converse situation is found in countries such as Portugal. To explain this imbalance, evidence is drawn from a study of Erasmus in Portugal conducted during 2016. While the popularity of the country as a destination is related to low cost of living, friendliness and educational quality, interviews with managers of the Erasmus programme reveal other factors that limit the participation of local students. This includes the low level of Erasmus scholarships for undergraduates from families affected by the economic crisis, with exchange students also increasingly viewed as tourists and consumers as well as learners.  相似文献   
9.
On May 31, 2010, Australia instituted proceedings before the International Court of Justice in the case of Whaling in the Antarctic (Australia v. Japan). Although Australian politicians had for some time threatened such a course of action, the decision to proceed with international litigation took many observers by surprise, most basically because Japan appeared to be in a strong legal position and the risks associated with the case appeared greater than Australia's prospects for success. This article examines the background to the whaling dispute and suggests two ways in which litigation in the World Court may contribute to resolution of the dispute no matter the legal outcome of the case.  相似文献   
10.
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