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   81篇
  免费   0篇
  81篇
  2022年   1篇
  2020年   2篇
  2019年   4篇
  2018年   1篇
  2017年   1篇
  2016年   6篇
  2015年   2篇
  2014年   3篇
  2013年   14篇
  2012年   6篇
  2011年   5篇
  2010年   6篇
  2009年   4篇
  2008年   3篇
  2007年   4篇
  2006年   5篇
  2005年   4篇
  2004年   3篇
  2002年   1篇
  2001年   1篇
  2000年   1篇
  1996年   1篇
  1994年   1篇
  1993年   1篇
  1981年   1篇
排序方式: 共有81条查询结果,搜索用时 0 毫秒
11.
The paper reports on an empirical study of the environmental and resource degradation observed in small‐scale handicraft clusters in the Red River Delta of northern Vietnam. Most entrepreneurs in these clusters face important challenges, including depletion of natural resources, linked to acute shortages of capital and land. Such issues are identified as the main cause of overcrowding, poor working conditions and extreme environmental degradation. The study also highlights some industrial ecology practices at the enterprise level, and assesses the role played by the government in providing incentives for enterprises to invest in new technology and pollution control. Drawing from the analysis of a questionnaire survey of 56 handicraft enterprises, the study identifies the major constraints they encounter in adopting new environmentally clean technologies and engaging in environmental management. Shortage of capital and lack of knowledge about the benefits of new technologies were viewed as the most important barriers, followed by shortage of skilled workers, poor market conditions and scarcity of land appropriate for industrial production.  相似文献   
12.
近年来,红色旅游发展为江苏省旅游发展带来了新的机遇,也对市场经济条件下的文物保护事业提出了新的挑战。从分析江苏省红色旅游与文物保护的现状入手,通过问卷调查、现场访谈等方式进行实证研究,提出了红色旅游与文物保护的互动发展模式,并在此基础上提出了具有可操作性的发展对策。  相似文献   
13.
上海青年“红旗读书运动”是全面建设社会主义时期加强青年思想政治教育的一次重要实践,对确立马克思主义在意识形态领域的指导地位具有重要意义。这场读书活动以青年为对象,持续时间长达七年之久,从最初广大青年积极参与,到因国民经济困难而受到影响,再到结合毛泽东著作出版掀起高潮,形成了以党委为核心,共青团、工会等团体密切协作的领导机制,同时建立起多层级的指导委员会,通过思想动员、组织动员以及典型引导的动员机制,加强对青年的思想引领。“红旗读书运动”为党开展思想政治工作积累了丰富经验,对新时代加强青年培养提供了现实启示。  相似文献   
14.
This paper presents results of use-wear study on lithic artifacts from two Later Stone Age sites (Gelalo and Misse) on the Red Sea Coast of Eritrea. The sites produced large quantities of lithic artifacts in association with mollusk shells and ostrich eggshell beads, but it is unclear if all the stone tools were required for bead and mollusk shell processing. The study involved recording of microfracture damage traces in order to infer the use-material and the manner in which the artifacts were used. A large percentage of the analyzed samples from Gelalo and Misse preserve wear patterns suggestive of human use. The diagnostic wear types include: (1) dense step, snap (crushing) and hinge fractures typically confined on the working edges, and (2) feather scars organized in a scalar manner visible on the ventral and dorsal surfaces of the active parts. The observed damage patterns suggest cutting and engraving medium to hard materials. The evidence is incomplete for more generalization about the specific activities carried out at the sites. A brief experimental study involving ostrich eggshell drilling, oak twig sawing and bark scraping, meat slicing, and mollusk shell sawing and drilling was carried out to aid interpretation of wear features observed on the archaeological specimens. Wear traces produced by sawing mollusk shell and oak wood showed close affinity to those observed on the archaeological specimens. The study contributes important information about early Holocene site use on the Red Sea Coast of Eritrea. The close association of used lithic artifacts, symbolic objects (beads) and broken shell remains indicates that the sites were habitation areas.  相似文献   
15.
红岩碑是贵州著名古迹,而数年来考释者频仍不断,众说纷纭,至今无一定论。碑之原迹早已不存,研究者大多是以拓本摩本为据。然而红岩碑传世拓本摩本种类繁多,据统计近30种。而其形状不一,内容各异,让人依违难决。贵州省博物馆收藏有数种红岩碑拓片,应是历史上流传较广且影响较大的本子,本文对它们的历史渊源及有关事实作一些查考,期于研究者慎选工作底本。  相似文献   
16.
17.
    
An archaeological survey of Saudi Arabia's Farasan Islands in May 2010 recorded a broad range of sites that have not previously been documented. The survey concentrated on Greater Farasan and Segid islands, and comprised a rapid recording of sites shown to the authors by representatives of the Saudi Commission for Tourism and Antiquities. The sites were photographed, their positions logged, sketch drawings made of the principal features and surface pottery drawn and photographed. Detailed drawings were made of a stone anchor and a well with possible Ancient South Arabian carved decoration. The sites visited included settlements, wells, cemeteries and a cave. Several sites included the remains of buildings made of massive ashlar blocks, as well as others of rubble‐stone construction. Datable material at the sites points to several periods of occupation, from the early first millennium BC to early modern times. Some locations were characterised by long periods of settlement. Apart from the findings of this survey, most of the sites remain largely uninvestigated, and suggest significant potential for future research into settlement on the archipelago, as well as into past maritime activity and technology in the southern Red Sea region and beyond.  相似文献   
18.
年画是中国特有的民间艺术形式。本研究介绍了传统年画印制所用红蓝色料的发展历史,选取15种中国古代与近现代常用红蓝色料进行红外光谱分析,并归纳总结了标准样品的化学结构与红外谱图特征。在此基础上,利用衰减全反射傅里叶变换红外光谱仪对三幅清末民初时期的传统年画开展无损检测。结果显示三幅年画的红蓝色料均为合成颜料或染料,包括酸性大红G、酸性墨水蓝G、普鲁士蓝等。本研究扩展了红外光谱在书画文物分析检测中的应用范围,为传统年画色料的无损鉴定提供科学依据。  相似文献   
19.
  总被引:1,自引:0,他引:1  
Counties identified as anomalous in the 2004 US presidential election - large metropolitan counties and majority-minority counties that voted Republican and non and small-metropolitan counties that voted Democratic, are the subject of a qualitative analysis to assess why they were exceptions to the conventional wisdom of a Red and Blue America polarized along metropolitan-non-metropolitan and modern versus traditional dimensions. Contacts with professional colleagues, and with media and partisan representatives, and visits to selected counties provided valuable insights and helped us to assess the extent to which the county votes in 2008 reinforced or changed the broad Red and Blue dimensions derived from 2000 to 2004.  相似文献   
20.
    
This paper summarises the methodological approach taken in an interdisciplinary project involving geographers and architects. The project charted the diverse afterlives of the modernist‐inspired, state‐sponsored, residential high‐rise, and did so drawing on two cases: Red Road Estate in Glasgow and Bukit Ho Swee Estate in Singapore. In offering a specific account of, and reflection upon, the methodologies used in the High‐rise Project, we hope to advance the methodological repertoire of human geography generally and contribute further to the new wave of scholarship on geography and architecture.  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