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   306篇
  免费   7篇
  2023年   3篇
  2022年   6篇
  2021年   2篇
  2020年   4篇
  2019年   10篇
  2018年   17篇
  2017年   20篇
  2016年   17篇
  2015年   9篇
  2014年   10篇
  2013年   38篇
  2012年   12篇
  2011年   22篇
  2010年   17篇
  2009年   20篇
  2008年   13篇
  2007年   28篇
  2006年   15篇
  2005年   11篇
  2004年   9篇
  2003年   6篇
  2002年   7篇
  2001年   4篇
  2000年   8篇
  1998年   1篇
  1997年   1篇
  1996年   1篇
  1992年   1篇
  1985年   1篇
排序方式: 共有313条查询结果,搜索用时 15 毫秒
11.
A new lithic tool type was discovered at the Pacific Nicaraguan archaeological site of Santa Isabel (AD 800–1350) and named raspadita (small scraper). Thousands of these small tools (1–2 cm in length) were found. They have a rounded proximal edge and a pointed distal end. In this study, the raspaditas are proved to be a coherent tool class with minimal variation in size, shape, material type and usewear. They were manufactured from white chert bladelet cores using soft hammer percussion and pressure flaking unifacial retouch. Usewear points to a composite tool form and a scraping function for the raspaditas. Scanning electron microscopy determined a ventral leading, dorsal following, unidirectional scraping motion for the raspadita proximal end. The material that was scraped has still to be definitely determined but phytoliths visible in the SEM images suggest that the composite tool was used for plant processing.  相似文献   
12.
156项工程与新中国工业城市发展(1949~1957年)   总被引:1,自引:0,他引:1  
“一五”时期,以156项工程为契机,新中国开始了全面的社会主义工业化建设。这些大型经济建设项目的启动,不仅改变了中国城市发展的道路、方向,而且为中国城市的快速发展提供了强劲的动力,从而推动了中国城市进入以重工业优先发展战略为导向的新阶段。在这一发展模式的作用下,中国城市的发展呈现出城市职能的经济化、城市化发展的高速化、大中城市优先发展以及区域城市发展均衡化等新特点,这种城市发展的变化既彻底改变了旧中国城市的半殖民地半封建性质,又为后来中国城市的发展奠定了全新的基础。  相似文献   
13.
袁书琪  刘丽 《旅游科学》2007,21(4):8-11
海峡西岸旅游产业在全国和亚太地区占有重要地位,旅游产业结构布局的调整有重大意义.当前海峡西岸旅游产业偏重观光游览,旅游投入偏少;偏重自然景观,旅游文化发掘不够;偏重旅行消费,旅游六要素不完备;偏重旅游旺季,时间上经营不平衡;偏重低级竞争,市场无序现象还比较严重.旅游产业布局存在旅游集散地与目的地错位、星散布局缺乏整合、重复布局分散客流、单体布局缺乏联系等问题.海峡西岸旅游产业结构布局调整应集中精力抓准重点,延长产业链,设计旅游精品,调整布局构建多级布局体系.  相似文献   
14.
This article continues research into social mobility in England in the nineteenth century by examining the links with different occupational structures, socio-economic and industry/occupation, for a specific location. This allows an examination of the impact of the characteristics of these structures on occupational and thence on social mobility. Occupational mobility has long been recognised as a major determinant of social mobility and has been the subject of a number of papers, usually to determine how much a specific variable affects the level and type of mobility observed. Rarely do these analyses consider the location’s occupational structure, and its changes, as a determinant of the level of mobility. This paper finds that much of the variability of occupational mobility of a locality is determined by the characteristics of the different industries and occupations in that location. Industries and occupations provide a context within which other factors, such as literacy, operate.  相似文献   
15.
In 2008 a new notebook manufacturing cluster was established in Chongqing in western China. By 2013 it accounted for some 25% of world output by volume. Chongqing’s ability to attract this manufacturing supply chain was driven by several factors that permitted strategic coupling: the existence of complex networks of cooperation and economies external to the firm but internal to contemporary global production networks; changed conditions in southeast and east China; and the creation by Chongqing Municipal People’s Government with central state support of hard and soft infrastructures and externalities that drove down logistic and production costs and permitted constant product innovation.  相似文献   
16.
ABSTRACT

Recent scholarly work has enhanced our understanding of how new path development activities are enabled or constrained by ‘regional environments’, made up of pre-existing industrial structures, knowledge organizations, support structures and institutional configurations. This paper moves beyond overly static views on regional environments. We develop a dynamic perspective by analysing conceptually and empirically how a constraining environment can be transformed into one that enables the development of new growth paths. The paper offers a typology of various modes of change, including layering, adaptation and novel application that are used by key actors to ‘manipulate’ the regional support structures to facilitate new regional industrial path development. The conceptual framework is applied to a case study of the digital games industry in the region of Scania, southern Sweden. Our findings suggest that the creation of a more enabling environment for the growth of the digital games industry has been the outcome of multi-scalar processes and combinations of various modes of change employed by a few key individuals operating in the newly emerging path.  相似文献   
17.
The paper discusses notions and experiences of authenticity of place in relation to intangible cultural heritage. Drawing on qualitative informant interviews with representatives of traditional and new businesses in the Jewellery Quarter in Birmingham (UK), it analyses authenticity of place with regard to three key dimensions: the experience of origins, the experience of continuity and the experience of potentiality and actuality. Findings suggest that intangible cultural heritage activates and facilitates experiences of authenticity, often related to people’s individual identity constructs and associated benefits or detriments. Some heritage concepts have evolved from their narrowly defined historic context and inform experiences of authenticity in the present.  相似文献   
18.
In the 1950s, the Ministry of Health, supported by interested groups outside government, recognised the political importance of productive efficiency. For leadership, organisational models and techniques the Ministry looked to the movement for industrial productivity. The NHS was receptive, but private-sector approaches were modified and dampened as they were imported. NHS management was to be the provider of technical expertise, but the deployment of this expertise was limited by clinical autonomy and de-coupling from financial incentives. This article casts new light on the history of productivity policy, NHS management and the moving frontier between state and civil society.  相似文献   
19.
In spite of being a national form of music-making, the brass band movement is accepted — almost without question in the popular imagination — as working class and northern. Hence, in 1974, Peter Hennessy described a band contest at the Albert Hall: ‘A roll call of the bands is like an evocation of industrial history. From Wingates Temperance and Black Dyke Mills to more modern conglomerates .... Grown men, old bandsmen say, have been known to cry at the beauty of it all …. Of all the manifestations of working-class culture, nothing is more certain than a brass band to bring on an attack of the George Orwells. Even the most hardened bourgeois cannot resist romanticising the proletariat a little when faced with one.(The Times, 11 Oct. 1974) This stereotype, which emerged in the nineteenth century, generated the following questions about northern identity: what elements in the brass band movement created this reportage of northern bandsmen and how did bands, which thrived in large numbers in the Southern Pennines, emerge as a musical and cultural metonym of the industrial landscape? This article explores notions of music-making and the creation of a musical space, place and region through the reporting of brass bands c. 1840–1914.  相似文献   
20.
Classification of artifacts has long marked a significant edge between theory and practice in archaeology. While considering classification to be a necessary methodological device, most practitioners also recognize that it carries with it built-in assumptions. This essay approaches the issue by way of a specific stone tool type from Old World sites: the burin. By asking “what is a burin?” the study shows the need to reconsider typologies to reflect changes in research questions and progress in dating methods, especially when working with museum collections and secondary data between regions and across national traditions, and the need to study whole collections from the perspective of technological choices.  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