The Practices and Process of Neighborhood: the (Re)Production of Riverwest,Milwaukee, Wisconsin     

《Urban geography》2013,34(5):473-495

This article examines the practices and process that (re)produce neighborhoods. I argue that the practices producing neighborhoods in the 1970s inform the practices (re)producing neighborhoods today. Drawing upon Lefebvre's concepts of social space and spatial practice, Bourdieu's concepts of practice and habitus, and Pred's concept of place as a historically contingent process, I examine the (re)production of Milwaukee's Riverwest neighborhood as a process. Practices of institution building and protest were central to the production of this relatively socially inclusive and activist neighborhood. Over the past 30 years, through what could be defined as the habitus of place, the process of neighborhood (re)production continued many of the practices first established in the 1970s, as new practices addressed social and cultural changes. A focus on practices and process draws our attention to the (re)production of a relatively stable, consistent, long-term neighborhood identity.  相似文献   

Robust Change Vector Analysis (RCVA) for multi-sensor very high resolution optical satellite data     

《International Journal of Applied Earth Observation and Geoinformation》2016

The analysis of rapid land cover/land use changes by means of remote sensing is often based on data acquired under varying and occasionally unfavorable conditions. In addition, such analyses frequently use data acquired by different sensor systems. These acquisitions often differ with respect to sun position and sensor viewing geometry which lead to characteristic effects in each image. These differences may have a negative impact on reliable change detection. Here, we propose an approach called Robust Change Vector Analysis (RCVA), aiming to mitigate these effects. RCVA is an improvement of the widely-used Change Vector Analysis (CVA), developed to account for pixel neighborhood effects. We used a RapidEye and Kompsat-2 cross-sensor change detection test to demonstrate the efficiency of RCVA. Our analysis showed that RCVA results in fewer false negatives as well as false positives when compared to CVA under similar test conditions. We conclude that RCVA is a powerful technique which can be utilized to reduce spurious changes in bi-temporal change detection analyses based on high- or very-high spatial resolution imagery.  相似文献   

新疆及邻区地震构造图简介   总被引：3，自引：0，他引：3  

沈军  柏美祥  石广岭 《内陆地震》2011,25(2):97-108

简要介绍了新编新疆及邻区地震构造图的主要内容.本图在1:1 000 000新疆地震构造图的基础上,修改扩编而成.比例尺为1:2 500000,采用李廷栋主编的1:2 500000中国西部及邻区地质构造图为底图.编制过程中吸收了大量相关研究成果,查阅相关文献,结合遥感资料的重新判读和解译.建立了图内近300条活动断裂及1...  相似文献   

二维多途径多普勒雷达退速度模糊算法的改进及效果分析     

杨明  王改利  刘黎平  仰美霖  陈正旭 《气象》2013,39(5):616-622

对Zhang Jian提出的二维多途径自动退速度模糊方法进行了改进。原方法从弱风切变区确定一系列参考径向,使用这些参考径向对其相邻库进行逐库连续性检测和模糊订正。由于中小尺度系统的扰动和弧立回波区的影响,有时很难获得比较准确的供参考的相邻库,这将对进一步的退速度模糊过程产生很大的影响。针对这个问题,在连续性检测的过程中,先确定疑似速度模糊边界,然后识别出速度模糊边界和速度模糊区域。在模糊订正的过程中,采用扩展邻域的方法,扩大参考库的范围进行模糊订正。为了检验改进方法的性能,采用大量的雷达体扫个例进行试验。结果表明,该文的改进方法能够较准确地识别出速度模糊的边界和区域,同时具有较好的退速度模糊效果。  相似文献   

国际体系的社会演化：中心、周边、亚周边分析模式     

王志琛 《世界地理研究》2022,31(1):76-84

等级制的国际体系是地理政治体系,由中心、周边、亚周边和边缘四部分组成,它们各自发挥区别而又相互联系的作用,共同推动国际体系的运转和社会演化。中心国家是体系的建立者和维护者,面对中心国家的选择压力,自主性对亚周边国家非常重要,可以提高这些国家改革和革命发生的概率。周边国家通过顺从体系领导者实现发展,而亚周边国家在不顺从的同时,希望借助体系实现发展,于是国际体系出现了两种演化方式：伸缩演化指周边取代衰落的中心或中心分解成多个政治社会实体,其中之一成为新中心的演化方式;螺旋演化指亚周边不断通过制度变革,促进经济发展和实力增长,最后成功取代中心的演化方式。  相似文献   

GIS SUPPORTED HEDONIC MODEL FOR ASSESSING PROPERTY VALUE IN WEST OAKLAND, CALIFORNIA     

ZHOU De-min XU Jian-chun GONG Hui-li 《中国地理科学(英文版)》2006,16(1):70-78

1INTRODUCTIONOakland,locatedat37°47′43″N, 122°13′41″W, isa cityon the east side of San Francisco Bay in Northern Cali-fornia in the United States. As of 2000, the city had anarea of 202.4km2with a total population of 399 484,making it the third largest city in the San Francisco BayArea after San Jose and San Francisco. The city of Oak-land stretches from San Francisco Bay up into the EastBay Hills (from the "flatlands" West Oakland, NorthOakland up into the foothill distr…  相似文献   

Information from the Kinematics of F and G Stars in the Solar Neighborhood     

Yu-Qin Chen  Gang Zhao  Jian-Rong ShiNational Astronomical Observatories  Chinese Academy of Sciences  Beijing 《中国天文和天体物理学报》2002,2(5):419-428

We have calculated the orbital parameters for 90 stars in Chen et al. and updated the kinematic data for stars in Edvardsson et al. by using the accurate Hipparcos parallaxes and proper motions, and recalculated the \\\\\\\\\\\\-element abundances in Edvardsson et al. in a way consistent with Chen et al. The two sets of data are combined in a study of stellar populations and characteristics of F & G stars in the solar neighborhood. We confirm the result of Chen et al. that a distinguishable group of stars may belong to the thick disk rather than the thin disk. The ages for the stars are determined using the theoretical isochrones of VandenBerg et al. The age-metallicity relation is investigated for different subgroups according to distance from the sun and galactic orbital parameters. It is found that a mixing of stars with different orbital parameters significantly affect the age-metallicity relation for the disk. Stars with orbits confined to the solar circle all have metallicities [Fe/H] > -0.3 irresp  相似文献   

中国大城市保障房居民情绪幸福感影响因素 ——以广州市为例   总被引：1，自引：0，他引：1  

刘晔  潘卓林  冯嘉旋  陈宏胜  刘于琪 《热带地理》2019,39(2):180-187

采用在广州市13个保障房社区收集的一手数据，运用多元线性回归模型和中介效应分析技术，分析了保障房社区居民情绪幸福感影响因素。结果表明：社区建成环境（住房条件、社区建设）和社区社会环境（社区社会网络和社区凝聚力）与情绪幸福感水平显著相关，但没有证据表明社区内的保障房比重与情绪幸福感相关。此外，居民的人口与社会经济特征与其情绪幸福感显著相关。身体健康水平与情绪幸福感水平显著相关，且对于婚姻状况和住房条件与情绪幸福感的关系而言起到中介效应。因此，保障房的规划和建设要兼顾社会环境建设和物质环境建设，以提升保障房社区居民的幸福感和生活体验。  相似文献   

社区主客观特征对社区满意度的影响机理——以上海市郊区为例   总被引：3，自引：4，他引：3  

申悦  傅行行 《地理科学进展》2019,38(5):686-697

在以人为本发展理念的指导下,城市研究与规划越来越关注城市生活空间的构建与居民生活质量的提升,社区满意度研究的重要性不断增加。在郊区快速发展和社区生活圈构建的背景下,论文基于对上海市郊区居民活动日志调查的一手数据,在Campbell模型的基础上建立理论模型,从客观和主观相结合的视角出发,聚焦社区客观建成环境、社区主观感知特征和社区满意度三者之间的影响机理,并利用结构方程模型开展实证研究。研究结果表明：居民的社区感知情况对社区满意度有直接性和决定性的影响,居民对社区的健康、便利、安全和美观情况的感知对社区满意度都存在显著的正影响;社区的密度、可达性、设施等客观建成环境通过影响社区感知特征而间接地影响社区满意度;居民的社会经济属性对社区感知特征和社区满意度的影响甚微,影响郊区居民社区满意度的主要因素是社区特征。  相似文献   

降水邻域集合概率方法尺度敏感性试验     

刘雪晴  陈静  陈法敬  夏宇  范宇恩  徐致真 《大气科学》2020,44(2):282-296

降水邻域集合概率法是处理高分辨率降水集合预报不确定性的一种新方法。利用2017年5~7月GRAPES(Global and Regional Assimilation and Prediction Enhanced System)区域集合预报系统24 h降水预报资料,进行GRAPES降水邻域集合概率方法试验,并针对邻域概率法的等权重和邻域尺度问题,设计了邻域格点权重修正邻域方案以及二分类权重修正邻域方案,进行降水的集合概率法、等权重邻域集合概率方法、权重修正邻域集合概率方法和二分类权重修正邻域集合概率方法等四种方法的格点相关及敏感性试验,并利用多种概率预报检验评分评估上述四种方法的预报效果。试验结果表明:(1)尽管采用邻域计算方案的三种邻域集合概率方法的降水概率预报评分各有优劣,如等权重邻域集合概率法的相对作用特征曲线面积评分略优,而权重修正邻域集合概率法和二分类权重修正邻域集合概率法的降水概率预报可靠性更高,但采用了邻域计算方案的降水概率预报评分均优于传统的集合概率方法;(2)降水邻域集合概率方法的预报技巧对邻域尺度很敏感,统计评分最优的邻域半径为5~8倍模式水平格距;(3)引入了权重修正的两个邻域集合概率预报方法在24 h降水量超过10 mm时改进较明显,能够提供更加客观的概率预报结果。总体上看,降水邻域集合概率方法具有较好的应用前景,恰当的邻域概率方法及邻域半径可以获得更合理的降水概率预报结果。  相似文献