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   90篇
  免费   5篇
  2020年   1篇
  2019年   9篇
  2018年   6篇
  2017年   8篇
  2016年   5篇
  2015年   5篇
  2014年   8篇
  2013年   13篇
  2012年   5篇
  2011年   2篇
  2010年   3篇
  2009年   4篇
  2008年   5篇
  2007年   1篇
  2005年   2篇
  2004年   1篇
  2003年   1篇
  2002年   2篇
  2001年   6篇
  1998年   4篇
  1997年   2篇
  1996年   1篇
  1994年   1篇
排序方式: 共有95条查询结果,搜索用时 15 毫秒
11.
12.
13.
14.
The Jebel al‐Ma'taradh and its surroundings contain exceptional deposits of lithic raw materials, including flint and chert, but especially chalcedony, agate, carnelian, and chrysoprase. These deposits were intensively exploited during the Neolithic, and some of the artefacts produced entered the trade network that included settlements on the coast and inland, sometimes as far as 300 km. During earlier periods, probably as early as the Pleistocene, only flint was used. Between the sixth and the fourth millennia, carnelian and agate were exploited to make beads, which are found in the necropolises and settlements of the UAE.  相似文献   
15.
An increasing number of subnational government bodies mandate municipalities to establish a vision for their future development with a local plan. Outside the U.S., few studies have assessed whether these mandates succeed at increasing formal quality, policy focus and implementation of local plans. In addition, the reasons that prompt governments to impose mandates remain unclear. To tackle these issues, we used a multi-method approach combining interviews, plan content analysis and questionnaires to compare mandated and voluntary planning in Switzerland. Our analysis reveals that mandates only have limited impact on local plans. In particular, they do not produce higher quality plans than voluntary planning and do not improve implementation of policies. Our results may imply that (a) planning mandates from subnational governments are ineffective in general or (b) Swiss mandates in particular entail too few requirements and enforcement mechanisms to show a clear effect. Further studies could explore this issue empirically by comparing the characteristics of different planning mandates and assessing their effect on the quality and implementation of local plans. Alternatively, future research efforts could also examine how to find a compromise between mandated and voluntary planning in order to increase local commitment towards plan making.  相似文献   
16.
The Red Sea and surrounding area formed through dynamic uplift and rifting of Afro-Arabia, and associated volcanism (both oceanic and continental in character). As a result, volcanic landforms and products are widespread and play a vital role in the natural and cultural landscapes of humans occupying the highlands and lowlands on both sides of the Red Sea. Archaeologists have suggested for some time that Afro-Arabian trade in obsidian had its roots in the prehistoric period and that the region was very likely the source of an abundance of obsidian artefacts found as far afield as Egypt, the Persian Gulf and Mesopotamia, and which do not match the well-known Anatolian, Transcaucasian or Mediterranean sources. Nonetheless, the southern Red Sea is one of the few obsidian-rich regions exploited in antiquity that has been barely investigated. In this paper, we highlight new geochemical analyses (carried out by LA-ICP-MS) of obsidian sources in Southern Arabia and beyond, that enhance our knowledge of obsidian exploitation from as early as the Neolithic period, and which enable us to evaluate the role that highland Yemen obsidian sources played in prehistoric long-distance trade. In addition, we present new evidence for explosive volcanic eruptions that likely affected the highland populations of Yemen in the 4th millennium BC.  相似文献   
17.
18.
Four propositions relative to the laws of nature in the classical period must be noted. 1. Certain regularities in phenomena had been discovered. 2. A concept of law had emerged. 3. Classical science is characterized by the introduction of the notion of the legality of nature. 4. New uses of the word «law» had appeared in scientific texts. This article is devoted to the analysis of only this last proposition, that is to say to a terminological problem. First we will describe the semantic uses of the word «law» that may have contributed to the constitution of its classical meaning: its specific usage, disciplinary usage, usage in physics, in mathematics, in metaphysics. Second we will analyze the various moments of the diffusion of the word in the sciences in the xviith century. The general thesis defended in the end is that if the term «law» had indeed been used in science with no reference to a law-giving God prior to the xviith century, only this reference, that is, the coming together of its physical and its metaphysical usage, allowed its generalization in the period between the xviith and xviiith centuries.  相似文献   
19.
20.
Le Morne Brabant is an important mountain landscape in the living memory, colonial history, and national identity of Mauritius. This paper presents a kind of salvage project to understand Makak, an elusive, “mythic” settlement along Le Morne’s northern coast. This detailed analysis brings together wide-ranging oral, written, and material evidence to show that Makak is an informal place name for an area first settled by French colonists in the 1700s, then by several prominent “Free Colored” families in the 1800s, and finally depopulated as residents were forcibly removed in the 1940s. The investigation suggests that Makak is a serial settlement, which seemingly was not eking by at the edge of the Indian Ocean, but thrived as a multicultural community, tapped into global trade networks. The project thus provides a new way of framing Le Morne’s history and heritage, while also providing a potential research model for the nascent field of Mauritian historical archaeology.  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