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   1233篇
  免费   25篇
  2024年   1篇
  2023年   6篇
  2022年   5篇
  2021年   13篇
  2020年   30篇
  2019年   12篇
  2018年   21篇
  2017年   23篇
  2016年   19篇
  2015年   36篇
  2014年   16篇
  2013年   66篇
  2012年   86篇
  2011年   111篇
  2010年   112篇
  2009年   122篇
  2008年   92篇
  2007年   90篇
  2006年   93篇
  2005年   88篇
  2004年   17篇
  2003年   46篇
  2002年   34篇
  2001年   29篇
  2000年   31篇
  1999年   16篇
  1998年   7篇
  1997年   6篇
  1996年   10篇
  1995年   3篇
  1994年   2篇
  1993年   7篇
  1992年   4篇
  1991年   2篇
  1990年   1篇
  1989年   1篇
排序方式: 共有1258条查询结果,搜索用时 15 毫秒
1.
刘冠英 《丝绸之路》2009,(12):121-123
图形创意引发了设计基础教育的变革,作为现代教育训练的课题,可培养学生通过联想、想象和一些表现手法来观察和发现生活中的创意元素。  相似文献   
2.
刘扬 《丝绸之路》2009,(24):43-45
旅游能否成为一门独立学科,关键取决于能否形成一套完善的学科基础理论和方法论。本文分析了中外旅游研究方法的进展情况,对理论实证方法的优越性进行了阐释,将其在国内外旅游研究中不同应用程度作以比较,进而总结出国内旅游研究方法的方向。  相似文献   
3.
本文通过 X 射线衍射(XRD)、差热分析(DTA)、发射光谱分析(ESA)、扫描电镜(SEM)和能量色散 X 射线分析(EDAX)的方法,对古耀州青瓷所用原料及其矿物组成,古瓷器的烧成温度和显微结构进行了分析研究。得出耀瓷乃是使用当地高岭石和伊利石粘土矿物为原料烧制而成,烧成温度在1200℃以上的结论.  相似文献   
4.
刘影 《文献》2021,(1):26-31
国家图书馆藏甲骨共有35651片,是目前我国乃至世界上收藏甲骨最多的单位,对这批甲骨进行整理包括很多方面的工作。本文对国家图书馆所藏甲骨碎片进行复原,并在此基础上进行相关问题的讨论:包括"告日"的问题,以及"■"字的释读问题。  相似文献   
5.
科举是建文历史的重要内容,也是其"文治"的具体表现。然而,《明实录》书写的建文朝科举,既缺乏三级科举考试的正面记载,又大体上掩盖了附传传主建文年间科举中式的信息。本不属于政治敏感性问题的科举史事,因其体现了建文帝泽被天下士子的恩典、妨碍了朱棣"文治"的弘扬,遭到了《明实录》的排斥。这表明实录对建文历史的讳饰,不只限于政治敏感性问题,而是一切有利于建文帝形象的史事。值得注意的是,史官在实录编修中采用春秋笔法披露了建文朝科举的蛛丝马迹,使得相关史事并没有在"国史"话语体系中完全被湮没。这反映出史官与君主在建文历史的认识、评价方面,存在一定的差异,此种现象并非晚明才出现,而是明初已露端倪。  相似文献   
6.
In archaeology, strontium isotope analysis is developing into an efficient scientific technique for tracing the movement of prehistoric humans and animals. Determining the local bioavailable 87Sr/86Sr ratio range is the key to distinguishing whether the human or animal is indigenous to the local area. It has been shown that the 87Sr/86Sr ratio in the enamel of pigs can be an excellent sample to determine the range of local strontium isotope ratio at the site. However, pigs may not be all local at the site, and there is no special study on whether pigs’ different ages and tooth types impact the local strontium isotope characteristics. In this paper, the tooth enamel of 19 pigs from the Zaoshugounao site for strontium isotope ratio (87Sr/86Sr) by multicollector–inductively coupled plasma mass spectrometry. There were no significant differences in 87Sr/86Sr ratios of local pigs at different months and different molar types, which did not affect the determination of the local strontium isotope standard. Based on the local strontium isotope ratio range (0.711056–0.711476), we found that five pigs were non-local. The Jing and Wei river basins (in Guanzhong basin) and northern Shaanxi are likely sources of non-pigs.  相似文献   
7.
ABSTRACT. We reexamine the price structures and their welfare implications in three pricing regimes (mill, uniform and discriminatory) for a monopoly. We show that spatial price discrimination could provide the highest social welfare and, when consumers tastes are heterogeneous enough, also the highest consumer surplus. The superiority of spatial price discrimination is partially due to the larger output produced and partially due to differential treatment for consumers with heterogeneous tastes.  相似文献   
8.
This paper examines the diversity of uses of Adam Smith’s ideas in nineteenth-century American debates about the tariff. Legislative debates about American trade policy ran almost uninterrupted from the 1820s to the end of the century; as a result, they provide an abundance of examples of the ways in which legislators marshaled economic ideas to shape political discourse and influence policy. Smith’s causal ideas about free trade and its effects were referenced in policymaking, and Smith’s intellectual authority was often invoked as a legitimating device for partisan ideology. These uses, I argue, contributed to the sloganizing of Smith as the ‘apostle of free trade’ and his enduring popularity as a political icon in American politics.  相似文献   
9.
Yu Liu 《European Legacy》2018,23(6):674-691
Sir William Chambers was one of the most important English architects in the eighteenth-century, but both in his day and later his international recognition was closely connected with his admiration for and promotion of Chinese art, particularly Chinese landscaping. Between 1757 and 1773, Chambers published three treatises praising the ingenious mixture of nature and art in a Chinese pleasure ground, criticizing the then influential English gardener Lancelot (Capability) Brown, and trying to goad English garden design into the direction of China. He did not achieve his purposes mainly because he mixed what he knew as genuine about the Chinese gardening art with what he fantasized about it. While recent scholarship has focused on his fantasy, this article examines what Chambers knew or imagined about Chinese landscaping, what he and his detractors were for and against, and how the fiasco of his 1772 and 1773 treatises, which he brought upon himself, nevertheless helped to usher in a new phase in the English reception of Chinese landscaping ideas.  相似文献   
10.
A lack of clear political commitment together with confusing rules and enforcement often characterize the institutional context of policy implementation and regulatory compliance in developing countries. By connecting such contextual features to existing models of policy implementation and regulatory compliance, we examine how regulatory factors are related to basic and proactive corporate environmental management practices in the Pearl River Delta region in China. Drawing on data derived from both a survey and in‐depth interviews, we show that a perception of clear political commitment to environmental protection across multiple government levels and units is positively associated with business efforts in basic environmental practices, regardless of the specific enforcement intensity. Nevertheless, a perception of clear political commitment is not related to proactive environmental practices. Conversely, a perception of policy ambiguity, in the form of confusing regulatory standards and enforcement, is negatively associated with corporate efforts in both basic and proactive environmental practices; yet, intensive inspections mitigate these negative associations with policy ambiguity.  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