全文获取类型
收费全文 | 437篇 |
免费 | 5篇 |
专业分类
442篇 |
出版年
2023年 | 3篇 |
2020年 | 9篇 |
2019年 | 12篇 |
2018年 | 10篇 |
2017年 | 17篇 |
2016年 | 18篇 |
2015年 | 18篇 |
2014年 | 10篇 |
2013年 | 108篇 |
2012年 | 8篇 |
2011年 | 11篇 |
2010年 | 13篇 |
2009年 | 10篇 |
2008年 | 15篇 |
2007年 | 9篇 |
2006年 | 12篇 |
2004年 | 8篇 |
2003年 | 8篇 |
2002年 | 10篇 |
2001年 | 7篇 |
2000年 | 7篇 |
1999年 | 3篇 |
1998年 | 7篇 |
1997年 | 5篇 |
1996年 | 7篇 |
1994年 | 8篇 |
1992年 | 4篇 |
1991年 | 5篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 6篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1982年 | 5篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1973年 | 2篇 |
1972年 | 4篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1948年 | 4篇 |
1947年 | 2篇 |
排序方式: 共有442条查询结果,搜索用时 0 毫秒
31.
While food allergy prevalence has been studied at the national level, we know little of food allergy prevalence or perceptions of prevalence/management at the local level. This paper uses Waterloo Region as a case study to 1) document self-reported individual and household food allergy and sensitivity prevalence at the local level; 2) investigate perceptions of food allergy prevalence; and 3) explore perceived confidence in anaphylaxis management. Survey data were collected from January to March 2019. Respondents (n = 500) self-reported individual and household food allergy and sensitivity, estimated the percentage of Canadians with food allergy, and were queried about their knowledge of food allergy management. Prevalence estimates were weighted to the structure of the 2016 Canadian Census, and univariate and bivariate analysis were conducted. Prevalence of self-reported food allergy was 12.1% (95%CI, 8.8%-15.3%), and prevalence of self-reported food sensitivity was 26.3% (95%CI, 21.9%-30.7%). When asked to estimate the percentage of Canadians with food allergy, the mean perceived percentage was 35.1% (SD = 22.96). Self-reported prevalence of food allergy appears higher in Waterloo Region, and the estimated percentage of Canadians with food allergy is inflated. Understanding prevalence and perceptions at the local level is important for targeted allocation of public health resources to ensure safe spaces for individuals with food allergy. 相似文献
32.
33.
34.
Kevin Ward 《Geography Compass》2007,1(3):657-672
This article reviews the trans‐nationalisation of Business Improvement Districts. It outlines the geographical and ideological origins of this much‐heralded approach to downtown governance, and the means through which it has found itself in such diverse settings as Cape Town in South Africa, Kruševac in Serbia and Liverpool in the UK. Analysing the emergence of Business Improvement Districts in terms of the external edges of the state and its internal architecture, on the one hand, and, on the other, in the context of discussions around urban liveability, this article reviews work across geography, planning, political science and sociology. It concludes by arguing that Business Improvement Districts are both interesting in their own right, for what they reveal about contemporary trans‐national trends in urban governance, and for what they what they have to say about wider processes of neoliberal urbanisation. 相似文献
35.
When the Jesuit missionaries began to work in China, they attracted the attention of the Chinese by introducing European knowledge. This is the context in which Jesuits such as Matteo Ricci, Giulio Aleni, Francesco Sambiasi and Ferdinand Verbiest made their Chinese‐language world maps. Sambiasi was a man of many talents. He was a tactful diplomat and a learned scientist. His world map shows him to be a skilful adapter of earlier knowledge, which he passed on to future generations. The six known copies of his map are in two versions, printed from two sets of wood blocks (c. 1639). A text at the top of one version explains why the world must be seen as a sphere, which demonstrates how these maps were meant to convince the Chinese public of European scientific findings. 相似文献
36.
While screen production is notoriously centralised, it is still found outside major media cities where the central problem for actors in these subordinate media cities is how to create sustainable levels of screen production capabilities in circumstances of increasing centralisation and globalisation in media production and its design. This article discusses how the screen production sectors of two subordinate media cities, Brisbane and the Gold Coast, are organised. Each city represents a different pathway for the sustainability of a media sector. The Gold Coast is a production location for globally and nationally dispersed high-budget feature film and TV drama production; while Brisbane is mostly a ‘national production’ location for domestically oriented news, documentary, infotainment and sports programming with a focus on lower budgeted feature filmmaking and occasionally, television drama. These different city pathways are the product of the creative resources and infrastructure evident in each city. 相似文献
37.
When the talks for a Trans-Pacific Partnership (TPP) were launched in 2010, there appeared to be a coincidence of interests between the American and Australian governments in negotiating a high-quality, ‘21st-century’ trade arrangement that would multilateralise the bilateral and minilateral trade agreements that have proliferated in the Asia-Pacific region in the last 15 years. As the negotiations progressed, however, a divergence between American and Australian interests became apparent. Protectionist interests in the United States have prevented the administration from improving on market access agreements in the current preferential trade agreements with TPP partners, thereby undermining the multilateralisation objective. Some of the elements of the US template for 21st-century trade agreements, notably enhanced protection for intellectual property, and the inclusion of investor–state dispute resolution, clash with Australian trade priorities. Moreover, the central role of the TPP in the US ‘pivot to Asia’ has led to perceptions that it is part of a strategy to encircle China: consequently the TPP may force Australia to make the very choice between China and the United States that the government wishes to avoid.
当2010年启动跨太平洋伙伴关系时,在谈判高质量、“21世纪”的贸易安排时美国和澳大利亚政府的利益似乎走到了一起。这种贸易安排会使过去十五年里亚太地区繁荣的双边及微关系多边化。在谈判进行的过程中,美澳之间的分歧却变得明朗了。美国的保护主义利益集团阻碍政府在现行的与亚太伙伴的最惠贸易协定中改善贸易准入协定,因此损害了多边化的目标。美国21世纪贸易协议的模式,明显加强了知识产权的保护,而且包含了投资者—国家争端解决的内容,与澳大利亚贸易优先的考虑发生了冲突。但亚太伙伴关系在美国重心移往亚洲的计划中至关重要,让人觉得就是包围中国战略的一部分。因此亚太伙伴关系会迫使澳大利亚在中美之间做澳政府并不愿意做的选择。 相似文献
38.
39.
Lisa Ann Richey 《Development and change》2012,43(4):823-845
Global health interventions to provide antiretroviral (ARV) drug treatment for people living with HIV/AIDS in developing countries have linked global and local actors in unprecedented ways. These uneven relationships have been described as creating new forms of citizenship that challenge the liberal understanding of rights and responsibilities bestowed by the state. A comparative case study based on fieldwork from South Africa and Uganda suggests different theoretical understandings of the link between technologies of AIDS treatment and relationships of belonging. Yet, ethnographic data from local clinics in both countries point to similarities that exist across AIDS interventions, and to the importance of counsellors in negotiating the rules of ARVs. Neither patients living with HIV nor the local providers of their AIDS treatment are ‘bare life’ subjects to be acted upon by a global development intervention. As ARV technologies are increasingly prescribed in developing country clinics, diverse social relationships are taught and negotiated as part of the pedagogy of biopolitics. The following discussion demonstrates how local counsellors and clients negotiate the rules of AIDS treatment together for mutual benefit. The article concludes that AIDS treatment creates relationships of therapeutic citizenship and clientship in ways that constrain the possibilities of citizenship and development. 相似文献
40.
Sally Ann Peberdy 《Tijdschrift voor economische en sociale geografie = Journal of economic and social geography = Revue de géographie économique et humaine = Zeitschrift für ?konomische und soziale Geographie = Revista de geografía económica y social》2000,91(4):361-378
Based on research conducted in 1999/2000, this paper examines the vibrant informal sector cross‐border trade between South Africa and Mozambique. It provides an overview of the small and medium entrepreneurs involved in this trade as well as the kinds and volumes of goods that they carry across the border. It suggests that the use of the term ‘informal’ to describe this trade may be misleading as it obscures the multiple linkages between the formal and informal sectors in both countries. Furthermore, it implies a degree of illegality and non‐regulation which are not always present. The paper concludes by questioning the policy and regulatory frameworks within which these small, medium and micro enterprises (SMMEs) operate. 相似文献