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   516篇
  免费   11篇
  2024年   1篇
  2023年   11篇
  2022年   3篇
  2021年   6篇
  2020年   26篇
  2019年   14篇
  2018年   17篇
  2017年   16篇
  2016年   17篇
  2015年   12篇
  2014年   18篇
  2013年   31篇
  2012年   44篇
  2011年   48篇
  2010年   35篇
  2009年   56篇
  2008年   32篇
  2007年   34篇
  2006年   24篇
  2005年   31篇
  2004年   7篇
  2003年   15篇
  2002年   3篇
  2001年   3篇
  2000年   10篇
  1999年   2篇
  1998年   1篇
  1997年   3篇
  1996年   2篇
  1995年   1篇
  1994年   1篇
  1992年   1篇
  1991年   1篇
  1962年   1篇
排序方式: 共有527条查询结果,搜索用时 15 毫秒
111.
This paper analyzes the extent and nature of age-misreporting in the Mosaic data, currently one of the largest historical census microdata infrastructures for continental Europe. We use demographic measures known as the age heaping indexes to explore regional, periodic and sex-specific patterns of age misreporting across 115 Mosaic regional datafiles, from Catalonia to Moscow, during Europe's demographic ancien régime and thereafter. The paper's second significant contribution is the comparison of Mosaic-based results to those derived from two other big census data projects—IPUMS and NAPP. Beyond this exploratory data analysis, we also investigate possible sources of variation in age heaping across Mosaic data by examining how it relates to variability in socioeconomic, institutional, and environmental conditions. Overall, our systematic inquiry into quality of age reporting in Mosaic consolidates the project's potentially transformative role in comparative historical family demography and suggests some avenues for future research.  相似文献   
112.
ABSTRACT

After many years of efforts aimed at reaching a cohesive and inclusive socio-economic development, Poland keeps witnessing some significant disparities in the distribution of wealth. Moreover, these disparities intensified in the course of the post-socialist transition and they have not been diminished by the regional policy of the EU. In this light, urban regeneration appears as an important, emerging sphere of public intervention intended to support the less developed regions. The objective of this study is twofold: first, to characterize the place of urban regeneration in the Polish strategic planning system, and second, to carry out an in-depth analysis of planning strategies and practices of urban regeneration at the regional level and conclude with recommendations for planning. The latter is achieved by examining the Polish experience with urban regeneration practices in the 1999–2015 period using Wielkopolska region as a case study. In order to reach this objective: (a) all strategic documents related to urban regeneration have been collected and analysed, (b) a survey has been conducted in 100 cities and towns of the region and finally (c) 50 interviews have been carried out with various stakeholders involved in the urban regeneration process. The article concludes with recommendations for planning and further urban regeneration projects aiming to alleviate the development disparities between core and non-core regions.  相似文献   
113.
ABSTRACT

We report an archaeobotanical analysis of flotation samples taken from Shirenzigou, an Early Iron Age agro-pastoralist site dated between the fourth and first century BC, located on the northern slope of the Tianshan Mountains in Xinjiang, China. The charred macro-botanical assemblage is dominated by naked barley grains with a few broomcorn and foxtail millet grains. In the context of Trans-Eurasian exchange of cereal crops, southwest Asian crops (wheat and barley) and two Asian millets (broomcorn and foxtail) were introduced to Xinjiang a few centuries to a millennium before Shirenzigou was occupied. The choice of barley cultivation in preference to wheat and millet may have been possibly driven by the relatively extreme local environment and the scheduling requirements of mobile pastoralism. Barley is well suited to this environment, and the choice of naked barley in preference to hulled barley may have been driven by the whole grain tradition prevailing in East Asia.  相似文献   
114.
Samples of dental calculus were taken from 11 human individuals buried at Nemrik 9, a Pre-Pottery Neolithic site in Northern Iraq. All of them represented the time span of ca. 9100–8600 bp. In total, 95 microfossils were retrieved from these samples, including 70 phytoliths, 9 starch granules or clusters of starch, 3 pollens, and 1 xylem fragment. Most microfossils could be attributed to C3 cool season cereals, most likely wheat and barley, which is consistent with previous knowledge about the composition of crops in early farming communities living in the Fertile Crescent. In addition, three phytoliths and one starch granule typical of C4 warm season grasses were recovered including one subangular and faceted starch granule, which might derive from a native grass, but is not diagnostic of any genus. Prior to assigning diagnostic status to this starch, exhaustive reference work on native grass seeds is necessary. The presence of one Phragmites phytolith suggests non-alimentary processing of reeds using teeth or perhaps using the stem of this grass as a toothbrush or toothpick.  相似文献   
115.
116.
Results derived from the analysis of small carnivores from a burial chamber at the Late Neolithic Çatalhöyük (TP Area) shed light on the socioeconomic significance of stone martens (Martes foina), red foxes (Vulpes vulpes), and common weasels (Mustela nivalis). All of these are fur-bearing animals, though only the stone marten remains to show evidence that this animal was exploited for its pelt. The evidence consists of the observed skeletal bias (only the head parts and foot bones were present) and skinning marks. Two of five sets of articulated feet are most likely linked with an almost completely preserved human infant skeleton, one of two well-preserved skeletons that were interred on the burial chamber floor. In contrast to these, other human skeletons were found mostly incompletely preserved, though with evidence of articulation. It seems that the articulated forepaws were deliberately incorporated into the structure, most likely as a part of burial practice and ritual behavior. These distinctive deposits, along with rich grave goods, emphasize the uniqueness in the entire Anatolian Neolithic of the assemblage from the burial chamber, which is decorated by a panel incised with spiral motifs.  相似文献   
117.
118.
The Yuzhen Palace is one of the nine palaces in the Ancient Building Complex built by order of the Yongle Emperor during the Ming dynasty. The buildings were built with dressed black bricks. As a result of the planned national South–North Water Diversion project, the water level in the Danjiangkou Reservoir that surrounds the Yuzhen Palace was expected to rise by approximately 15 m. To avoid submersion of the site, three gates were elevated by 15 m in 2013 and other buildings dismantled, for later reconstruction. The characterization of the construction materials has therefore become of primary importance. Here, we present results on the plasters of the Longhu Hall. The analysis of materials involved a multi‐analytical approach combining optical and electron microscopy with X‐ray and vibrational spectromicroscopies and thermogravimetry. The results indicated the use of two earthen plaster layers and a whitewash finish coating applied over a thin preparatory intermediate layer to improve the adherence of the finish coating to the earthen plaster. Ramie and straw fibres identified in the earthen plasters were added to reduce shrinkage and cracking during drying. The raw materials used and the application technique pointed to a well‐established construction industry using traditional earthen building materials together with lime technology.  相似文献   
119.
The aim of this paper is to apply kernel density estimates (KDEs) to the visualization and interpretation of lead isotope data from bronze assemblages found along the northern border of central China, here designated as the Arc. New lead isotope analyses of 30 leaded tin–bronze artefacts from the Wangdahu cemetery (c.500–300 bc ) in the Ningxia Hui Autonomous Region, north‐west China, provide the basis for the discussion. By using multivariate KDEs and the calculated likelihood of the overlap, the present work shows that the Wangdahu objects feature a unique linear array of isotope ratios, representing an important element of overall bronzes from the Arc in the first millennium bc . This characteristic isotope signature is fundamentally different from that of Dajing ores in north‐east China, as well from that of early Qin bronzes in Shaanxi and Gansu provinces. This suggests that a variety of metal resources were utilized by peoples living in the Arc. The KDE approach thus proves effective at presenting and comparing lead isotope data.  相似文献   
120.
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