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   221篇
  免费   11篇
  2023年   1篇
  2022年   2篇
  2021年   3篇
  2020年   4篇
  2019年   8篇
  2018年   14篇
  2017年   15篇
  2016年   17篇
  2015年   4篇
  2014年   1篇
  2013年   50篇
  2012年   10篇
  2011年   9篇
  2010年   6篇
  2009年   16篇
  2008年   13篇
  2007年   8篇
  2006年   12篇
  2005年   8篇
  2004年   8篇
  2003年   6篇
  2002年   5篇
  2001年   3篇
  2000年   4篇
  1999年   2篇
  1997年   1篇
  1994年   1篇
  1988年   1篇
排序方式: 共有232条查询结果,搜索用时 15 毫秒
91.
目前天津经济技术开发区(TEDA)已发展成为天津大都市区的新兴边缘城市。本文以居民问卷调查的第一手资料为基础,分析天津大都市区内各地区居民对TEDA的认知程度与迁居意向以及地域选择性特征,为以TEDA为核心的人口反磁力中心建设为主导的天津大都市区人口调整对策提供科学依据。  相似文献   
92.
刘毅 《中原文物》2012,(3):15-19
明太祖第十四子肃庄王朱楧墓在今甘肃榆中县来紫堡乡黄家庄村,陵园建筑早已无存,其墓室(玄宫)曾被挖开。该墓为青砖拱券结构,共有5个墓室、前后2道石门,是研究明代藩王陵墓制度的重要资料。  相似文献   
93.
Several clay smoking pipes (chibouks) were recovered during the course of two archaeological surveys conducted during the late 1970s and early 1980s in Saudi Arabia. At the time these projects took place, no published clay tobacco pipe typologies existed, forcing the participants to assign a cursory date of ‘Ottoman period’ to the pipes. Since then, considerable archaeological research has been done on the Ottoman clay pipe. The following concerns the refining of the dates of these tobacco pipes in light of new studies.  相似文献   
94.
An earthquake of magnitude 6.2 (M b ) occurred in west-central part of Colombia on January 25, 1999. This earthquake is officially called Quindio Earthquake from the name of the most affected province. The earthquake caused disastrous damage to a large number of buildings resulting in significant casualties. In Armenia City and its neighbouring villages close to the epicentre over 1000 people were killed by the earthquake and the total monetary loss reached US$ 2 billion. Armenia City, which has an approximate population of 280 000 people, apparently suffered the worst in terms of casualties and damage to the buildings.

The present paper focuses on the causes of damage to houses and buildings in Armenia City. First, the evolution of the urban area of the city was investigated using historical features available maps from each era. Then a correlation between buildings damage and topographical features of the city was studied. The effects of geological features and amplification of ground motion were also investigated.  相似文献   
95.
On October 31 and November 1, 2002, two earthquakes of magnitude 5.4 and 5.3 hit the area at the border between the Molise and Puglia regions in Southern Italy. The damage pattern in the epicentral area qualified the quake as an intensity VII MCS event, although providing a notable exception relevant to the small village of San Giuliano di Puglia. Since the first macroseismic survey, it appeared clear that in S. Giuliano the intensity was two degrees higher with respect to three neighbouring villages located within a radius of 3 km. Soon after the quake, our team started a campaign of microtremor HVSR measurements (Horizontal to Vertical Spectral Ratio), then we installed accelerometers and carried out damage and geological surveys. Finally, we performed a geoelectrical tomography and two profiles of Vs velocity with depth using the NASW technique (Noise Analysis of Surface Waves). The preliminary observations indicate that ground motion amplification is present in S. Giuliano within the frequency band that may affect building. A strong velocity contrast 20 m deep causes the predominant peak. More amplification could be due to more complicated, 2D effects. As regards the damage pattern, it divides S. Giuliano in three zones showing different characteristics and seismic behaviour. A building-by-building survey is still under way to better evaluate vulnerability variations in different zones of the village. However, the acquired data so far is sufficient to propose site amplification as a possible cause of the damage enhancement observed in S. Giuliano.  相似文献   
96.
This paper presents the results of an integrated historical and geophysical survey of a medieval town lost through cliff recession and coastal inundation. Key objectives included evaluating historic maps in supporting the relocation and identification of major buildings, and applying integrated multibeam, side‐scan and sub‐bottom profiling to determine the location and extent of archaeological remains. The results demonstrate that cartographic sources from 1587 onwards can be a reliable source of data to guide geophysical survey. Integration of historical mapping with geophysical data enabled identification of the remains of two medieval structures, and the tentative identification of two others. © 2010 The Authors  相似文献   
97.
This article analyses the results of the first exclusive survey of politics and international relations PhD students in Australia. The survey was completed by 186 students from 22 universities. Students were asked 54 questions covering five areas: candidate choices, degree structure, research interests, workload pressures and the role of the Australian Political Studies Association (APSA). Our findings indicate that students base their choice of institution on pre-existing personal relationships rather than university reputation or research expertise; want more coursework and methodological training; believe scholarship-application outcomes are not based on merit; feel they cannot meet the field's workload expectations; and are unaware of APSA. This article raises important questions about the opportunities and support that individual academics, departments and university administrations provide to potential and existing students.

本文分析了澳大利亚首次政治学与国际关系学博士生专门调查的结果。调查涉及22所大学的186位学生。这些学生回答了涵盖五个领域的54个问题,包括博士候选人选择、学位结构、研究兴趣、课业负担以及澳大利亚政治学会的作用。我们的研究发现:学生对院校的选择基于既有的个人关系而非学校的研究声誉;他们希望更多的课业、更多的方法训练;他们认为奖学金申请的结果根据的不是能力表现;他们认为自己达不到所学领域的课业期待;他们不了解澳大利亚政治学会。本文就个体院系管理方提供给在读和潜在学生的机会和支持提出了一些重要的问题。  相似文献   

98.
Abstract

A Conservation Management Plan for Gordion and its Environs has been developed by a multidisciplinary team within a partnership between the University of Pennsylvania (both the School of Design and Museum of Archaeology and Anthropology) and Middle East Technical University (Faculty of Architecture) in Ankara. The project has involved a new approach to the protection of cultural material at the site itself, as well as the survey and documentation of a 140 km2 area, with Gordion as its centre, to include the village of Yass?höyük and five nearby villages, historic sites, höyüks, or settlement mounds, and tumuli, or burial mounds. The project utilized photographs and standardized forms in the documentation of public and private buildings and areas. Based on this survey, the values of the site and its environs were reassessed, and an action plan presented for all project stakeholders. One of the primary stakeholders is the local population, who must be made aware of the damaging effects of deep ploughing to the tumuli.  相似文献   
99.
本文通过对2000年以来长城保护方案及有关批复意见的系统梳理,重点从勘测、勘察、设计定位与保护原则、工程技术手段及设计文本与图纸等方面对目前勘察设计中存在的共性问题进行了系统分析;同时,根据不同结构类型的长城,还对现存主要病害和技术措施进行了抽样分析.在此基础上,本文从保护规划体系、立项审核、保护维修工作原则、勘察设计要求及项目实施与管理等方面提出了建议.  相似文献   
100.
Abstract

The 2003 and 2004 surveys at the Purrón Dam Complex (PDC) demonstrate the value of resurveying previously studied areas. Additional habitation sites, water management features, a cave with pictographs, and a major canal were discovered, increasing the number of recorded sites from eight to 57. From this survey, the collected ceramics and a synthesis of 12 chronometric dates suggest that water management was initiated in the complex by Early Formative times at ca. 1050–1100 b.c., and that the Purrón Dam was completed by the Middle Formative Period (ca. 650–450 b.c.), when settlements were small and decentralized. This challenges previous interpretations that place the PDC florescence during the Early Classic Period (ca. 150 b.c.a.d.250), a period with larger aggregated communities displaying social ranking. The results of our survey have implications for understanding the links between political complexity and agricultural intensification, and support recent ethnographic and archaeological research discrediting the argument that increasing social complexity necessarily leads to the construction of large water management systems.  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