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   1503篇
  免费   123篇
  国内免费   5篇
电工技术   4篇
技术理论   1篇
综合类   125篇
化学工业   23篇
金属工艺   4篇
机械仪表   17篇
建筑科学   1114篇
矿业工程   1篇
能源动力   9篇
轻工业   54篇
水利工程   9篇
石油天然气   2篇
无线电   23篇
一般工业技术   84篇
冶金工业   6篇
原子能技术   3篇
自动化技术   152篇
  2023年   31篇
  2022年   44篇
  2021年   39篇
  2020年   57篇
  2019年   17篇
  2018年   24篇
  2017年   23篇
  2016年   85篇
  2015年   61篇
  2014年   117篇
  2013年   111篇
  2012年   144篇
  2011年   125篇
  2010年   84篇
  2009年   86篇
  2008年   87篇
  2007年   92篇
  2006年   86篇
  2005年   58篇
  2004年   45篇
  2003年   40篇
  2002年   28篇
  2001年   22篇
  2000年   15篇
  1999年   27篇
  1998年   19篇
  1997年   6篇
  1996年   4篇
  1995年   5篇
  1993年   3篇
  1992年   2篇
  1991年   3篇
  1990年   8篇
  1989年   7篇
  1988年   5篇
  1987年   6篇
  1986年   2篇
  1985年   9篇
  1984年   3篇
  1983年   1篇
排序方式: 共有1631条查询结果,搜索用时 15 毫秒
1.
贺鼎  卢丽娜  王晶  张杰 《风景园林》2022,29(9):99-106
在国家文化公园建设背景下,国家对于大尺度线性遗产所在区域的保护工作日益重视,但对大尺度线性遗产所在的带状区域景观特征识别的研究尚属空白。以北京长城文化带为研究区域,基于景观特征评估(LCA)理论,借助地理信息系统(GIS)技术,围绕长城防御、屯垦和军情3个历史功能,构建由长城边墙、城堡和烽火台组成的文化遗产要素识别框架,探索大尺度线性遗产区域景观特征识别的技术路径和实现手段。在对自然景观要素和文化遗产要素进行分类、融合的基础上形成31种景观特征类型,针对不同的景观特征类型进行关键特征识别,深入研究自然景观与文化遗产的耦合关系及其形成机制,以期对中国的大尺度线性文化遗产区域总体评估和保护利用提供借鉴与参考。  相似文献   
2.
The Canadian landscape has typically captured a global imaginary of a pristine wild, but how might its urban designed landscapes be distinctly understood? Foregrounded by the landscape transformations accelerated by climate change, the book Innate Terrain: Canadian Landscape Architecture, edited by Professor Alissa North from the University of Toronto, highlights landscape architecture projects situated on the unique Canadian terrain. Providing further provocation on Canadian landscape architecture, Innate Terrain seeks to fill the literary gap on contemporary landscape perspectives, distinguishing Canadian landscape architecture from global practice, and particularly, its well-documented American counterpart. Landscape architecture in the Canadian context has evolved and established its own distinct identity, one imbued with national and local sensitivities. Informed by diverse environmental and cultural contexts, Canadian-designed landscapes reflect and refer to the prevailing ecosystems of Canada’s innate terrain. Contrary to the preceding International Style, landscape architecture projects in Canada have adopted the ethos of Critical Regionalism in the second half of the 20th century. Contemporary Canadian practitioners are designing landscapes that are deeply informed by their surrounding geographical context while emphasizing cultural specificity. Central to this cultural specificity, addressed by a new generation of landscape architects, is the increasing recognition of Indigenous Traditional Knowledge within the discipline. Canadian landscape architects have collaborated with First Nations, Inuit, and Métis communities, including the keepers of this knowledge, to develop land management strategies and design landscape interventions.  相似文献   
3.
梳理了历史文化街区保护与更新的发展演变,阐述了微更新符合中国国情的重要意义。通过借鉴当前历史文化街区保护与微更新的理论与方法,结合蒲圻历史文化街区的实况,提出风格混搭、小微循环、点状针灸、线性触发 4 大策略,并阐述了其景观微更新的措施。  相似文献   
4.
The importance of cultural heritage for supporting the knowledge economy has promoted its digitisation and online publication. Many cultural heritage repositories have published millions of digitised items using semantic web technologies and Linked Data approaches. These repositories frequently use knowledge organisation systems to classify the resources, but the domain heterogeneity makes it difficult to know if they are the most suitable ones. This paper describes the process used to discover and profile the knowledge organisation systems used in the cultural heritage domain. Additionally, for those knowledge organisation systems with a thesaurus-like structure, a detailed quality analysis is performed. The results of this analysis can be used as a key factor for the selection of knowledge organisation systems in classification tasks.  相似文献   
5.
近年来快速城镇化过程中,西北乡 村建设与地域文化发展出现了种种问题。 在乡村振兴战略的背景下,如何在复杂的城 乡系统中找到合适的切入点打通症结,解决 文化、空间、生态多系统的“乡村病”值得深 思。本文针对乡村发展的现实问题,以当地 普遍建设的生土建筑为切入点,以生态宜居 建设与地域文化传承为目标,提出一系列相 关保护与更新策略,并以定西市通渭县为例 探讨。策略包括在提炼当地传统民居生态特 性的基础上,以工程技术手段优化生土建筑 的材料性能与建筑结构,扩大生态与社会可 持续效益;凝练生土建筑文化特性为设计建 设基础,以技术研究、绿色教育与艺术活动 激活文化内生动力,并完善法规规范支持地 域文化传承。实现将生土建筑发展成果有策 略地整合,为西北乡村振兴实践提供参考。  相似文献   
6.
江淮名窑寿州窑,创烧于我国南北朝时期,兴盛于隋唐,衰落于五代宋。在其悠长的发展历程里,寿州窑烧制了许许多多的陶瓷用品,大致可分为饮食器、盛储器、酒具、文具、寝具、玩具、建筑用瓷等,釉色崇尚黄、黑釉,造型浑厚饱满,古朴沉稳,姿态万千,多样的的造型符号传递了当时的社会文化背景、瓷器制作水平和审美文化,为深入研究中国古陶瓷文化提供了珍贵的资料,对当今的文创产品开发也大有裨益。  相似文献   
7.
本文以中国传统村落、安徽省历史 文化名村绩溪县湖村为例,关注如何通过非 物质文化遗产保护与传承来促进传统村落 这一物质文化遗产保护的问题。首先分析了 湖村村落物质空间和非物质文化遗产特色, 接着阐释了非物质文化遗产活化与传统村落 保护与更新的关系,再梳理政府、企业和社 区三个层面村落物质空间及非物质文化遗产 的保护现状及存在问题,提出结合不同类型 非物质文化遗产活化的湖村物质空间发展策 略,最后提炼出构建“人—村—遗”一体化 的发展策略、完善村落非物质文化遗产传承 人制度、加强以生态博物馆理念为核心的村 落内涵建设及建设以特色产业为媒介的多方 参与体系四点建议。  相似文献   
8.
文章从凤阳县明中都皇故城遗址公园的规划设计的意义、理念、原则等方面进行了深入分析,并探讨了有关遗址公园旅游开发与保护的问题,完成了明中都皇故城遗址公园概念性规划设计方案。  相似文献   
9.
The Yaozhou kiln complex is a representative production center of ancient northern China, famous for the celadon production. In this work, bubbles, glassy matrix and residual crystals of celadon glazes produced from the Tang to Yuan Dynasty were analyzed by using optical microscopy, Raman spectroscopy and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). The results revealed that the Song, Jin and Yuan productions present bigger bubble and higher area ratios of the Si-O bending over stretching modes than the Tang and Wudai productions. This is consistent with firings at higher temperatures during Song, Jin and Yuan Dynasties. It is also in agreement with the historical studies, which revealed the change from wood-firing to coal-firing during Song Dynasty. The observation of calcium phosphate in Yaozhou productions indicated that the glaze ash had been used. No iron-based particle was identified by Raman spectroscopy in the glazes of all periods. The green color is certainly due to iron ion dispersed in the glassy matrix. Our study also confirmed no significant change in glaze raw materials used for Yaozhou productions from Tang to Yuan Dynasty.  相似文献   
10.
The extent to which the deliberative scenario brackets socio-economic inequalities (i.e., functioning as an ideal public sphere) has been long-debating. This study empirically addresses this question in the online setting. We test whether offline advantages (i.e., economic and cultural capitals) can be translated into power in online deliberation and how their dynamic relations further influence interlocutors’ deliberation experience (i.e., perceived procedural fairness and validity claim). Power is conceptualized as network power, including prestige (indegree), leadership (outdegree), and brokering power (betweenness). A national sample of Singaporeans participated in a three-week online deliberation, and network power is measured based on the web log. The participants answered a two-wave (i.e., pre- and post-deliberation) survey to indicate individual attributes. Structural equation modeling finds that online deliberation brackets as well as reinforces offline status. Economic capital is suppressed while cultural capital translates into network power, which further influences interlocutors’ evaluation of the deliberation.  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