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   2238篇
  免费   100篇
  2338篇
  2025年   1篇
  2024年   1篇
  2023年   4篇
  2022年   3篇
  2021年   41篇
  2020年   62篇
  2019年   194篇
  2018年   143篇
  2017年   124篇
  2016年   136篇
  2015年   128篇
  2014年   122篇
  2013年   270篇
  2012年   162篇
  2011年   150篇
  2010年   119篇
  2009年   72篇
  2008年   104篇
  2007年   96篇
  2006年   67篇
  2005年   61篇
  2004年   53篇
  2003年   64篇
  2002年   39篇
  2001年   45篇
  2000年   54篇
  1999年   11篇
  1998年   1篇
  1997年   3篇
  1996年   4篇
  1987年   1篇
  1985年   1篇
  1983年   1篇
  1982年   1篇
排序方式: 共有2338条查询结果,搜索用时 15 毫秒
1.
At the close of the 18th century, the first purpose-built industrial communities connected to mechanised cotton spinning were created in the Derwent Valley, Derbyshire. Across four sites at Cromford, Belper, Milford and Darley Abbey, three mill-owning families constructed a wide variety of purpose-built accommodation in order to house their growing workforces. This article uses a buildings-led approach to investigate the complex influences acting on the form and design of these houses. Through the analysis of historic building fabric, this research demonstrates that workers’ housing in the Derwent Valley comprised both innovative and traditional influences, reflecting the experimental character of early cotton manufacture. Ultimately, this research suggests that the array of approaches to house-building within the valley were the result of a highly nuanced interaction between the agenda, requirements and expectations of both occupant and patron.  相似文献   
2.
磁州窑的绘画题材皆为人物、花鸟等人们在日常事生活中所喜闻乐见之俗物,笔法以一笔点划的“实笔”为常法,故其产品深受民间昕爱。  相似文献   
3.
The use of a pottery vessel leaves markers on the ceramic wall that can inform archaeologists how the vessel functioned in the past. At present, archaeologists have little information for understanding how use-alteration reflects the complex nature of ceramic function and socioeconomic status. I conducted a 2-year ethnoarchaeological research project among the Gamo people of southwestern Ethiopia, who continue to produce and use pottery on a daily basis. This research indicates that interior surface attrition occurs primarily on pottery vessels used in wealthy households because of fermentation processes from high-status foods. Thus, the Gamo example suggests that there is a relationship between ceramic use-alteration and household socioeconomic status.  相似文献   
4.
王葳 《神州》2013,(34):155-155
在语言学中,针对理解他人和被他人理解,文体或语言表达的风格都扮演着一个非常重要的角色。合理正确的使用各种风格可以使我们的交流更加顺畅。为了能够使我们的写作和语言表达更加清楚,有效力及合理,学习不同的文体风格是非常必要的。  相似文献   
5.
盛菊 《安徽史学》2005,(5):116-120
胡适在撰写年谱的学术活动中,就年谱体例的发展与创新、年谱的功用与价值、年谱与传记的关系等问题,形成了丰富系统的思想,并对年谱体裁的发展产生了重要影响.胡适认为年谱应该揭示谱主学问思想的变迁沿革与发展脉络,总结其学术地位与学术贡献,年谱不仅要记述谱主的成就,也可以进行评判与批评,指出他的错误与短处.胡适总体上是将年谱视为传记之一种,但也注意到年谱在内容、体例、功用等方面与一般传记又有一定的区别.  相似文献   
6.

The ocean's profound inaccessibility makes it impossible to comprehend except through the mediation of technology. The first investigators to explore the great depths were hydrographers whose work was animated by mid‐nineteenth century growth of political, economic, and cultural interest in the oceans. While submarine telegraphy certainly boosted ocean science, interest in this field derived first from commercial concerns related to whaling and shipping as well as the intellectual pursuits of physical geography and questions about the existence of life at great depths. Hydrographers’ developing conception of the oceanic environment never represented a clear translation from technology. Dramatic changes in the understanding of the shape of the deep‐sea floor testified to the complexity of interaction between sounding machines, methods, and interpretations of depth. The shifting image of the sea floor not only reflected increasingly accurate measurements, but also mirrored shifting human motivations for studying this unexplored territory.  相似文献   
7.
Samples of Roman thin‐walled ware from Segesta (northwestern Sicily), dating back to the early Imperial period, were studied by optical microscopy (OM) and Neutron Activation Analysis (NAA). Up to now, this class of Roman fine tableware has only occasionally been evaluated archaeometrically. Nevertheless, numerous production centres are believed to have been simultaneously active in the western Mediterranean area. Petrographic and chemical data seem to be in agreement with the archaeological hypothesis of local manufacture in Segesta for most of the analysed samples, through a comparison with kiln wasters and local raw materials. The effectiveness of thin‐section petrography for determining the provenance of such a tiny tempered class of pottery and the integrated use of two different grouping procedures (petrography and chemistry) were also tested.  相似文献   
8.
The 9th‐century‐AD Belitung wreck was discovered in 1998 in the Java Sea. Construction techniques rapidly confirmed that it was unlike any known Chinese or Southeast Asian vessel. The uncertainty about its origins was resolved in 2008 by timber identifications: it was constructed in the Middle East (probably Oman or Yemen). This paper, on the characterization of a dammar resin lump collected in the vicinity of the wreck, supplies additional evidence confirming the probable re‐stitching of the vessel somewhere in Asia. © 2010 The Authors  相似文献   
9.
This paper explains, with the example of a Roman object (the ‘Mars from Oberweningen’, Switzerland), why neutrons can be used preferentially for the non‐destructive analysis of metallic objects of relatively large size. This method is superior to the conventional X‐ray tomography method due to the higher penetration ability in metals such as copper, tin and even lead. With this method, differing materials can also easily be differentiated. In this way, the inner and outer structures of objects can be observed with the help of tools based on mathematical algorithms. Slices at arbitrary positions and segmentation of different material clusters aid the understanding of manufacturing processes and can describe the present preservation status. This helps in selecting optimal and additional conservation measures in museums for further preservation. Beside the qualitative overview on structure and inner properties of the objects, quantitative information can be derived about material content and composition. This method and the subsequently needed facilities for this method are available at PSI for similar studies on demand.  相似文献   
10.
This paper inquires into whether the three types of arguments usually formulated in the normative literature on the legitimacy of secession – i.e. communitarian, choice, and remedial arguments – are articulated (or not) by separatist parties in Catalonia and Scotland. It concludes that these actors do use such arguments, but they tend to merge them in different combinations making a pluralist case for independence rather than developing monist reasoning as most political philosophers do. Furthermore, it finds a fourth type of argument which is under‐theorised in the relevant literature. This is an instrumental argument whereby independence is depicted not as an end in itself, but as a means to achieve better welfare and governance for the national population. It further proposes a fourfold theoretical scheme that links communitarian and choice arguments to a principled logic based on the belief in the existence of an absolute right to self‐determination and remedial and instrumental arguments to a consequentialist logic that legitimates secession on the condition that it serves the achievement of specific ends.  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