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   610篇
  免费   36篇
  2024年   3篇
  2023年   10篇
  2022年   9篇
  2021年   9篇
  2020年   34篇
  2019年   20篇
  2018年   28篇
  2017年   27篇
  2016年   22篇
  2015年   16篇
  2014年   13篇
  2013年   90篇
  2012年   36篇
  2011年   36篇
  2010年   34篇
  2009年   43篇
  2008年   39篇
  2007年   32篇
  2006年   36篇
  2005年   19篇
  2004年   15篇
  2003年   18篇
  2002年   10篇
  2001年   11篇
  2000年   6篇
  1999年   4篇
  1998年   3篇
  1997年   4篇
  1996年   4篇
  1995年   3篇
  1994年   3篇
  1993年   1篇
  1992年   2篇
  1991年   1篇
  1990年   3篇
  1981年   1篇
  1979年   1篇
排序方式: 共有646条查询结果,搜索用时 15 毫秒
71.
The Neolithic Revolution, constituting a shift from food acquisition to food production, came to Africa as it did to most of the rest of the world: through processes of transmission rather than through de novo innovation. In contrast with other regions the pastoral management of cattle, sheep and goats was widespread in Africa thousands of years before settled agricultural communities or the use of domesticated plants were in evidence ( 46, 35 and 10). We report here the discovery of haplogroup B in the first genetic analysis of an African archaeological sheep assemblage.  相似文献   
72.
Ancient DNA from a Neolithic legging (1st half of the 3rd millennium BC) found at Lenk, Schnidejoch (2750 m a.sl.) in the Swiss Alps has demonstrated, that modern distribution of genetic variation does not reflect past spatio-temporal signatures. The legging was made from the skin of a domestic goat (Capra hircus), belonging to the caprine haplogroup B1, which is marginal in Europe today, but represents a third highly diverse goat haplogroup entering Europe already in the Neolithic. Population expansion of lineage B therefore happened more than 4500 years ago, but their members were at some point almost completely replaced by goats of today's common A and C haplogroups.  相似文献   
73.
宋代官窑是中国古陶瓷研究中的重要内容之一。长期以来,由于对相关历史文献的理解不同以及考古发掘的局限性,致使在宋代官窑瓷器研究中存在许多悬而未决的问题,诸如何为北宋官窑,北宋朝廷是否在都城汴京设置过官窑,北宋官窑是否就是汝窑,河南汝州张公巷窑是否是北宋官窑,南宋修内司官窑的称谓是否准确,南宋官窑是否只有郊坛下官窑一处,何为文献上所说的内窑,老虎洞窑是修内司官窑还是文献上所说的续窑,等等。本文在对专家学者们对上述问题的看法进行疏理的基础上,指出对宋代官窑瓷器的研究离不开传世宋代官窑瓷器、现代科学技术手段和考古发掘资料,只有将这三者结合起来开展综合研究,才能最终解决上述问题。  相似文献   
74.
In Western and Central Europe, many woods are clearly separated from the surrounding countryside by permanent physical boundaries. While such boundaries are now out of use, in the past they were widespread and important landscape features. This paper argues that many woodland boundaries originate from the Middle Ages and perhaps even more from the Early Modern Period. Their existence was connected to a specific form of woodland management (coppicing) but also to ownership structures and through these to grazing regimes. With their various forms, permanent woodland boundaries served to separate woodland from the surrounding countryside both in a legal and physical sense. There are four basic types of permanent woodland boundaries: woodbanks, walls, stone rows and lynchets, all of which can still be studied in the landscape today. Because of their varied state of preservation and also because of the difficulties in creating relative chronologies, dating woodland boundaries is a very challenging task. However, even a basic typology can provide valuable information for a number of scientific disciplines, including landscape history, historical geography, archaeology and ecology. Permanent woodland boundaries are a part of European cultural heritage. They should be recognised and protected similarly to all other ancient landscape features.  相似文献   
75.
The aim of the paper is to summarise the present state of knowledge concerning bitumen trade in the Near East from the Palaeolithic (70,000 BP) to the Early Islamic period. During the Palaeolithic and Early Neolithic period, bitumen utilisation was mostly concentrated in settlements close to oil seeps. From the Ubaid 3 period, bitumen from the Mosul area became more important and was traded as far as the southern Persian Gulf. The Uruk period is a turning point for Mesopotamian history as settlements evolved into city‐states. These cities had a great need for raw materials, and this marks the beginning of large‐scale exploitation of Hit bitumen. This bitumen was traded at settlements along the Euphrates, where a large trade network was established. Hit bitumen entered the Persian Gulf at the turn of the second millennium (Dilmun period). Bitumen from Iraq (Mosul and Hit) became predominantly used in most settlements along the southern coast of the Gulf. During this period Iranian bitumen was also exported and this supply tended to increase, especially during the Partho‐Sasanian period. Dead Sea bitumen had its own exchange network, which was concentrated across present‐day Israel and Egypt where it was extensively used for mummification.  相似文献   
76.
张衡地动仪的发明、失传与历史继承   总被引:1,自引:0,他引:1  
地动仪的发明和失传存在深厚的社会背景.悬挂物对地震的良好反应是诞生科学思想的物质基础.地动仪是对天然验震器的发展,张衡不仅在利用物体惯性测震上,也在检测和记录地震微弱信号上有技术创新,成功测到公元134年12月13日陇西地震.天诫观念把自然现象与社会问题混为一谈,导致张衡晚年和地动仪的悲剧.仪器可能失传于东汉末年,当时发生了洛阳大火、毁铜铸钱、京师搬迁、人口剧减和灵台被毁等极端严重的社会混乱.张衡的科学思想和实践对现代地震学的起步发挥过思想启迪作用.对地动仪的研究需要开展科学实验,学术观点的统一只能建立在科学实验的基础上.  相似文献   
77.
本文将晚唐至宋代墓葬中的仿木建筑雕饰与隋唐时期的地上建筑——仿木砖塔的装饰相联系,推断宋墓中流行的仿木建筑雕饰最早应是受到地上仿木砖塔建筑装饰的影响。  相似文献   
78.
郭文  黄震方 《人文地理》2013,28(2):117-124
本文以皮埃尔点布迪厄的"场域理论"和列斐伏尔"空间的生产理论"为视角,以深度访谈和参与观察为基础,对周庄古镇从"一元同心并置结构"到"多元同心嵌套结构"转变过程中的多维空间生产进行了分析,结果表明:旅游场域形成之前的空间属于"内源性自生式本体空间",以"物理属性"为主;旅游场域形成后的空间属于"外源性嵌入式构建空间",倾向于"社会属性";旅游开发使物质空间景观化、文化空间多元化和社会空间复杂化,空间的分异和碎化趋向表明古镇社区正由"差序格局"转向"团体格局",进而表现为一种混合性"属地格局"。空间生产的动力机制主要是全球化背景下的地方怀旧情结、空间生产背后的政治力量博弈和空间生产中社区精英示范效应三种原因所致。本文指出在旅游快速发展背景下,古镇空间不是空洞的空间,空间的生产方向应该成为关注的焦点,这对理解古镇旅游空间场域的形成、生产及包容性发展具有重要导向。  相似文献   
79.
本文所选铭文系雅典在公元前5世纪中叶颁布的部分法令,集中反映出作为盟主之邦的雅典在政治、经济及司法等诸多方面对盟邦主权的肆意践踏,是解读该时期雅典历史的重要原始资料。国外古典学界对古希腊传世铭文的释读与研究极为重视,其中较权威的选本为R·梅格斯与D·刘易斯整理的《希腊历史铭文选》,亦是本文所依据的文本。  相似文献   
80.
吐鲁番柏孜克里克石窟出土汉文文书中,有古小学类文本残片三件:80TB1:304,80TB1:002a和80TB1:151,在已公布的成果中,或定名有误,或未能识别.经过比勘和研究,可以确定这些写本分别是玄应<一切经音义>抄录本、可洪<新集藏经音义随函录>摘抄增订本和<切韵>的抄本.  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