全文获取类型
收费全文 | 267篇 |
免费 | 5篇 |
出版年
2023年 | 3篇 |
2022年 | 1篇 |
2020年 | 3篇 |
2019年 | 10篇 |
2018年 | 7篇 |
2017年 | 10篇 |
2016年 | 13篇 |
2015年 | 13篇 |
2014年 | 5篇 |
2013年 | 79篇 |
2012年 | 6篇 |
2011年 | 5篇 |
2010年 | 6篇 |
2009年 | 4篇 |
2008年 | 10篇 |
2007年 | 6篇 |
2006年 | 8篇 |
2005年 | 2篇 |
2004年 | 4篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 5篇 |
1997年 | 4篇 |
1996年 | 6篇 |
1994年 | 8篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 5篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 5篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1971年 | 2篇 |
1970年 | 1篇 |
排序方式: 共有272条查询结果,搜索用时 0 毫秒
71.
Trolander JA 《Journal of urban history》2011,37(6):952-974
Active adult, age-restricted communities are significant to urban history and city planning. As communities that ban the permanent residence of children under the age of nineteen with senior zoning overlays, they are unique experiments in social planning. While they do not originate the concept of the common interest community with its shared amenities, the residential golf course community, or the gated community, Sun Cities and Leisure Worlds do a lot to popularize those physical planning concepts. The first age-restricted community, Youngtown, AZ, opened in 1954. Inspired by amenity-rich trailer courts in Florida, Del Webb added the “active adult” element when he opened Sun City, AZ, in 1960. Two years later, Ross Cortese opened the first of his gated Leisure Worlds. By the twenty-first century, these “lifestyle” communities had proliferated and had expanded their appeal to around 18 percent of retirees, along with influencing the design of intergenerational communities. 相似文献
72.
The emergence of archaeological interest in native copper in the mid-1800s developed in concert with explanations that privileged the Lake Superior area over other potential sources of copper. Most scholars have thus assumed that when copper artifacts first appeared in Northeastern North America, they arrived as finished implements or were locally made from Lake Superior raw materials. Procurement models that point to Lake Superior as the sole source of native copper have been widely accepted in the absence of systematic large-scale testing. This article evaluates the dominant model for native copper procurement and presents trace element data derived from instrumental neutron activation analysis (INAA) to determine whether hunter-gatherers in the Northeast utilized one dominant source of copper or in fact exploited a number of geological deposits. I specifically report on the chemical characterization of copper from 13 discrete geological deposits and 18 archaeological sites dating to the Late Archaic (ca. 5000–3000 B.P.) and Early Woodland (ca. 3000–2000 B.P.) periods to suggest that the dominant model for native copper procurement is oversimplified. 相似文献
73.
74.
Ann E. Bartos 《Gender, place and culture : a journal of feminist geography》2019,26(6):767-777
Over the past few decades, geographies of care have flourished, and have offered important insights into the importance of care in our worlds. This introduction provides a broad review of the literature on care ethics and introduces the key themes evident in this special issue that stretch the empirical and theoretical boundaries of care. In particular, the four papers in this special issue de-emphasize the role of the conventional dyadic care-giving relationships in the home and focus on wider structural power relations within which individual care relations are often formed. Such analysis reveals the workings of hegemonic white masculinity in perpetuating unequal caring and uncaring relations and reminds us that care is not always good or positive; rather care can cause harm and exacerbate violence. While ‘care’ is often seen as the antidote to resolve the vastly uncaring practices and politics evident across time and scale, this special issue acknowledges that more critical engagement with care ethics and the politics of care are necessary to achieve such a goal. 相似文献
75.
Lively debate surrounds the introduction of non-indigenous domestic livestock to southern Africa. Despite disagreements regarding process, the archaeological community agrees, with unusual unanimity, on the broad chronology. Indeed, the certainty with which the timing is known (admittedly within the limits of radiocarbon dating) has been celebrated, because with these underpinning data in hand, issues of process can be explored in a serious and empirically grounded manner. Recently published ancient DNA (aDNA) research in southern Africa now calls into question the reliability of many faunal identifications upon which this debate rests. These data build on earlier ecological data, suggesting that some faunal identifications at sites crucial to the debate may be unreliable. A number of morphologically identified domesticate bones were chosen for aDNA sequencing to explore the relationships among southern Africa’s early domestic stock. Unfortunately, a large proportion yielded DNA sequences indicating a wild origin. This led us to consider the potential scale of the problem and the implications for existing models regarding the introduction of herding to the subcontinent. The issue may originate largely from the optimistic identification of specimens retaining too few key morphological markers. We acknowledge that reconstructions of the past are likely to be biased by discarding potential zooarchaeological data through overly conservative identification. We argue, however, that the potential ramifications of building models on unreliable data are far greater than those of being forced to acknowledge gaps in our data and are calling for further research. 相似文献
76.
77.
78.
79.
80.