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   278篇
  免费   9篇
  287篇
  2023年   1篇
  2021年   2篇
  2020年   6篇
  2019年   12篇
  2018年   14篇
  2017年   19篇
  2016年   17篇
  2015年   4篇
  2014年   13篇
  2013年   78篇
  2012年   7篇
  2011年   5篇
  2010年   10篇
  2009年   13篇
  2008年   10篇
  2007年   4篇
  2006年   6篇
  2005年   4篇
  2004年   10篇
  2003年   2篇
  2002年   5篇
  2001年   5篇
  2000年   6篇
  1999年   4篇
  1998年   2篇
  1997年   1篇
  1996年   2篇
  1995年   1篇
  1994年   3篇
  1992年   3篇
  1990年   1篇
  1989年   3篇
  1988年   1篇
  1987年   4篇
  1986年   1篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1980年   2篇
  1978年   1篇
  1976年   1篇
  1973年   1篇
排序方式: 共有287条查询结果,搜索用时 0 毫秒
51.
52.
Catharine Macaulay's discussion of freedom of the will in her Treatise on the Immutability of Moral Truth has received little attention, and what discussion there is attributes a number of different, incompatible views to her. In this paper the account of the nature of freedom of the will that she develops is related to her political aspirations, and the metaphysical position that she adopts is compared to those of John Locke, Samuel Clarke, Joseph Priestley, William Godwin, and others. It is argued that although Macaulay's position is ultimately ambiguous, she is most plausibly interpreted as following Locke's discussion of free will in his Essay Concerning Human Understanding and of inheriting, from him, the ambiguity that we find in her account.  相似文献   
53.
54.
This study provides a unique method of inquiry for archaeological investigation with an aim to assess the intensity and effects of Neolithic and Bronze Age farming practices at Lough Dargan, northwest Ireland, through a multi-proxy analysis of a lake sediment core. Chironomid (non-biting midge fly) subfossils and lake sediment geochemistry (δ13C, δ15N and C:N ratios) were used to assess changes in limnological conditions through time. The limnological data were compared with macroscopic charcoal concentration and pollen data to examine the potential influence that early farmers had on a freshwater lake system within a prehistorically active catchment. Results from the chironomid analysis show that the first substantial period of agricultural activity in the early Neolithic (c. 3730–3190 BC) resulted in a temporary shift to more eutrophic lake conditions. There is evidence of animal husbandry with substantial levels of animal waste reaching the lake, leaving an imprint in the geochemical record of increased δ15N values and decreased δ13C values and C:N ratios during this time. The chironomid community reverted back to its pre-impacted state c. 3190 BC in response to a period of reduced farming (c. 3390–3000 BC) which eventually led to a distinct lull in activity, with possible cessation of farming from 3000 to 2700 BC. A return to eutrophic conditions coincided with the gradual return of agriculture, with more permanently altered lake conditions dominating from 2400 BC, even during a 250-year period of reduced human activity commencing at c. 1440 BC. Increased sedimentation rate, along with increases in δ13C, δ15N and C:N, the presence of chironomid taxa indicative of erosion, more eutrophic lake conditions and high concentrations of macroscopic charcoal all point to more intensive land use practices during the Bronze Age. Palaeolimnological data exhibited an immediate response to intensified farming during this time, and were especially responsive to pastoral farming due either to scale of activity or proximity to the lakeside. The success of this study demonstrates the effectiveness of palaeolimnological analysis in the investigation of prehistoric farming. This approach will help inform Neolithic and Bronze Age land-use practice and human–environment relations in the region, and highlights the potential for chironomid-based archaeological research.  相似文献   
55.
Abstract

Transylvania, situated beneath the Carpathian mountains, is one of the travel frontiers of Europe and the most romantic province of Romania. To most of its visitors, Transylvania is associated with haunted castles and vampires, thanks to the literary character Dracula. Even though Bran Castle appears to form the perfect home for a vampire count, this heritage destination is surrounded by debate because of the conflicting marketing strategies adopted by various organisations for the specific purpose of increasing the profits made from tourism. This paper explores issues of marketing, policies for interpretation and the understanding of heritage sites within a formerly socialist society in transition to a market economy. It analyses potential promotional, advertising and interpretive strategies which could be applied to Bran Castle, and offers solutions to produce a better understanding of the role of heritage tourism in a transitional economy.  相似文献   
56.
57.
Paying for water: water pricing and equity in England and Wales   总被引:2,自引:0,他引:2  
Over the past three decades, the business of water supply in England and Wales has been gradually transforming from the supply of a service to citizens, to the sale of a commodity to customers. The paper provides a genealogy of concepts of efficiency and equity in water regulation over the past thirty years, prior to evaluating the implications for water consumers of one aspect of this process – the shift away from policies prioritizing inter- and intra-regional equalization (implying a principle of social equity) towards policies prioritizing economic efficiency (implying a principle of economic equity) in water charging. In closing, alternatives to the current arrangements for domestic consumers are proposed.  相似文献   
58.
59.
This paper presents a vision and a pathway for the future of archaeological practice, in which several fields that are currently considered distinct, including community-based collaborative archaeology, indigenous archaeology, and applied archaeology, could become the norm. Inspired by personal encounters with some exceptionally open and collaborative archaeology projects, as well as by recent advances in archaeological science, which are starting to make it more portable, this paper sets out an agenda for a more open approach to archaeological practice. It advocates a method of producing knowledge about the past that does not privilege one investigator over another, but gives everyone who is interested and wants to participate an opportunity to do. Specific methodological challenges that are discussed include the need to ‘flip’ the public outreach element of research designs, to embed open participation from the outset by nurturing relationships of mutual respect and trust, and to take advantage of, and improve, the portability of archaeological science, so that it can be done in and by local communities. It is argued here that the opening of archaeological research, including the archaeological sciences, to a wider range of participants, is the most ethical approach to archaeological practice in a pan-disciplinary research environment.  相似文献   
60.
Archeological excavations of Amerindian sites on Dos Mosquises Island, Los Roques Archipelago, Venezuela, uncovered a wide range of evidence reflecting seasonal exploitation of local resources and multiple ritual depositions of large quantities of ceramic figurines, lithics, and faunal remains. Zooarchaeological analysis revealed the presence of modified and unmodified bones and teeth from numerous imported mammal species. Local geographic and environmental conditions preclude permanent establishment of terrestrial mammal populations and as such, there are no native mammalian taxa on the island itself or the surrounding oceanic archipelago. The presence of these faunal remains on Dos Mosquises can be attributed to the intentional movement of animal resources from the mainland to Los Roques by indigenous groups in the Late Ceramic Age (~AD 1200–1500). Despite attributions to a mainland source region, little else is known about the origins of these unique specimens. Here, we apply strontium (87Sr/86Sr), oxygen (δ18O), and carbon (δ13C) isotope analyses of tooth enamel from various archeologically recovered taxa including deer, peccary, tapir, ocelot, margay, opossum, fox, and weasel to investigate their geographic origins via comparisons with macro-regional models of precipitation δ18O and bioavailable 87Sr/86Sr. The 87Sr/86Sr results are highly variable both for the overall assemblage and between specimens within the same taxa, indicating origins from different geochemical environments of mainland South America. The combined archeological and isotopic evidence are consistent with origins within the late pre-colonial Valencioid Sphere of Interaction which encompassed the Lake Valencia Basin, surrounding regions, and several offshore island groups including Los Roques archipelago.  相似文献   
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