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   184篇
  免费   17篇
  201篇
  2023年   1篇
  2021年   1篇
  2020年   3篇
  2019年   7篇
  2018年   6篇
  2017年   10篇
  2016年   17篇
  2015年   10篇
  2014年   7篇
  2013年   49篇
  2012年   5篇
  2011年   7篇
  2010年   7篇
  2009年   6篇
  2008年   1篇
  2007年   6篇
  2006年   9篇
  2005年   5篇
  2004年   7篇
  2003年   4篇
  2002年   5篇
  2000年   5篇
  1999年   1篇
  1998年   2篇
  1997年   2篇
  1996年   3篇
  1995年   1篇
  1994年   2篇
  1993年   2篇
  1991年   2篇
  1989年   1篇
  1987年   1篇
  1985年   1篇
  1983年   2篇
  1981年   1篇
  1980年   1篇
  1978年   1篇
排序方式: 共有201条查询结果,搜索用时 0 毫秒
11.
Mapungubwe (AD 1220–1290) is generally regarded as the first urban centre in southern Africa, functioning as the seat of power for an extensive but short-lived polity. More than 80 years of excavations here, and at its nearby predecessor K2 (c. AD 1000–1220), resulted in a substantial assemblage of material remains from elite and commoner contexts. This assemblage includes a large collection of worked bone objects, such as needles, awls, tubes and objects of personal adornment. Of particular interest are the bone arrowheads and link-shafts, of which a significant number of specimens were found complete and intact. Such quantities of well-preserved worked bone objects are unique in the archaeological record of the region. The worked bone assemblages from these two sites provide a rare opportunity to study multiple components of the production process as well as the use context of bone objects. In this paper, we characterise the K2 and Mapungubwe worked bone industries through various morphological, technological, use-trace and contextual approaches and discuss the significance of these aspects in terms of raw material selection and manufacture and archaeological use context. In particular, this study shows the complexity of these worked bone industries over time.  相似文献   
12.
Drawing on a detailed analysis of the historical and current development of lighting in Copenhagen’s Tivoli Gardens, this article addresses how this site of extraordinarily diverse illumination exemplifies a carefully orchestrated balance between (1) muted and more vivid forms of lighting, (2) curation of historical styles and promotion of contemporary innovations in illumination and (3) artistic luminaires and those more aligned with popular tastes. Through these themes, we argue that the current strategies towards urban lighting that predominantly promote energy conservation, security, commercial imperatives and place-branding may be supplemented by place-specific design strategies that implement multiplicity, connect past and present, and accommodate diverse desires, dreams and realities. These attributes contribute to the ongoing emergence of what we call a ‘lumitopia’, a space in which an intensified attention to illumination is integral to the particularity of a place or landscape. In the case of Tivoli, this offers a lens to manage nocturnal space so that it becomes more aesthetically complex, inclusive and convivial.  相似文献   
13.
A high-resolution chronostratigraphy has been established for an eroding Atlantic round house at Sloc Sàbhaidh (North Uist, Scotland), combining detailed OSL profiling and dating of sediments encompassing the main bracketing events associated with the monument, radiocarbon AMS dates on bone recovered from excavated features and fills within it, and TL dates on pottery and burnt clay. Concordant OSL and radiocarbon evidence place construction of the wheelhouse in the first to second centuries AD, contemporary with dates from the primary occupation. Beneath the wheelhouse, clay deposits containing burnt material, attest to cultural activity in vicinity to the monument in the preceding second to first centuries BC. At a later date, the southern wall collapsed, was rebuilt, and the interior spaces to the monument re-structured. The chronology for the later horizons identified from the sediment luminescence dates extends to the second half of the first millennium AD, which goes beyond the range of the radiocarbon dates obtained. The data from ceramics encompass both periods. The juxtaposition of the dating evidence is discussed relative to short and longer chronologies for this Iron Age monument. Corollaries of this research are the implications that based on the long chronology, some of the ecofacts (bone) appear to be residual, and that the temporal duration of Hebridean Coarse Ware may extend into the second half of the first millennium AD.  相似文献   
14.
15.
The reformed planning system introduced in England in 2004 weakens the position of counties and unitary authorities. Regional bodies and central government have a larger say on the future shape of localities under these arrangements. In particular sub-regional strategies have a much bigger role within the new Regional Spatial Strategies. This paper examines the prospects for the influence of this new tier of planning, based on government guidance about sub-regional planning and on the evidence on emerging practice, particularly in the southern regions of England. The balance of influence of different actors is changing, both between government tiers and in wider governance relations. The prospects for integrated action in spatial terms are changing, as are the relationships to implementation.  相似文献   
16.
This paper reports on the findings of focus group discussions designed to explore the learning and skills-based needs of out-of-school youth in the Philippines, particularly addressing their reasons for leaving school, their current activities and employment, how they acquire skills and knowledge, what they want to learn about, their use of Information and Communication Technologies, and their future employment plans. It was undertaken in the context of the development of a programme of e-learning through ICT Centres to be delivered in support of the country's 5 million out-of-school youth.  相似文献   
17.
18.
Harvesting different species as foods or raw materials calls for differing skills depending on the species being harvested and the circumstances under which they are being taken. In some situations and for some species, the tactics used are mainly behavioral—that is, people adjust, or adapt, their own actions to fit the behavior and circumstances of the species they are taking. Under other circumstances and for other species, the skills and tactics used may call for greater environmental preparation or manipulation. Therefore, instead of trying to distinguish people today and in the past as either foragers or farmers, it makes sense to define human subsistence behavior as an interactive matrix of species and harvesting tactics, that is, as a provisions spreadsheet.  相似文献   
19.
Ecosystem services are part of a growing trend within environment and development to analyse environmental change within the context of socially valued outcomes. Yet, ecosystem services‐based policies and analyses are increasingly criticized for failing to connect with, or even for restricting, development outcomes. This article seeks to connect environmental analysis with development outcomes better by applying the capability approach of Amartya Sen and others. It demonstrates how scientific analysis of ecosystem services sometimes conflates pathways of ecosystem management with development outcomes, but that it can be reconfigured to include more diverse values and objectives. The article argues that ecosystem services should be identified more as ‘functionings’ (in the Senian sense of valued development outcomes) rather than ‘functions’ (in the sense of biophysical, apolitical ecosystem properties) in order to indicate that ‘services’ always reflect social values, and that values and scientific explanations of underlying biophysical properties evolve together. Environmental science for socially valued outcomes such as ecosystem services is therefore an important site of political inclusion and exclusion. The article illustrates this analysis with examples of ecosystem‐based adaptation to climate change from the World Bank and government of Bangladesh, and in contrast to differing approaches from the field of sustainability science.  相似文献   
20.
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