PALESTINIAN NATIONAL IDENTITY AND THE ISRAELI LABOR MARKET: Q-ANALYSES

The proposition that geopolitical adjustments in Israel following the 1967 war recreated and fostered the Palestinian national identity is examined and quantified with Q-analysis of the street labor markets for Palestinian workers in Israel. These street labor markets played an important role in creating an interaction and communication network among Palestinians from distant districts, and thus in recreating their national identity. Our Q-analyses show that at least two years before the intifada, a global communication system existed among Palestinian workers through the street labor markets in Israel. Such a global system was a precondition for the outbreak of the intifada.     

浅谈街景工厂在建立北镇市实景三维模型中的应用

通过对北镇市实景三维模型建立的案例分析,介绍了基于RCD30倾斜影像数据在街景工厂下快速制作高质量城市实景三维模型的关键技术。在实际生产中,参考像素工厂使用经验,结合我院生产情况,设置街景工厂中的关键技术参数。总结了提高街景工厂制作实景三维模型效率的经验方法,并提出生产中存在的问题,为实景三维模型更好地建立提供技术参考。     

土地利用对街头抢劫影响的空间分异模式：以H市为例

选取H市中心城区2009年和2010年发生的街头抢劫案件为研究对象,构建地理加权泊松回归GWPR模型,探讨不同性质土地利用对案件影响的空间差异性。研究表明,各类用地与街头抢劫的关系存在显著的空间异质性。其中,位于中心区外围的传统居住区和部分新建社区等居住用地对街头抢劫存在显著的负向影响;商业服务业设施用地对街头抢劫的影响总体上显著性不强,但与其中的商业设施点类型密切相关,独栋高层的商业综合体会使犯罪数量下降,而临街商铺形式的商业设施点则是犯罪高发区域;工业用地仅对老城区的街头抢劫产生正向影响;公园绿地总体上与街头抢劫案件呈负相关性,但城市开敞绿地多的地方案件数量也较多;交通设施用地与街头抢劫的关系则受到交通设施、道路等级、路网形态的影响。最后通过聚类分析发现,土地利用对案件影响的主导因素的空间分异模式与不同的城市功能分区有一定的对应关系,可以对每个功能分区根据其街头抢劫发生的主导因素制定相应的土地利用规划导则。     

Beyond affordable shelters: Subsidized housing and surrounding environments for pedestrian safety

Beyond the provision of affordable housing itself, planners and policymakers have raised concerns as to whether subsidized housing developments provide “suitable living environments” for the nation's poor. Despite numerous concerns regarding unfavorable living environments and the neighborhood context of subsidized housing, we have limited understanding as to whether built environments around subsidized housing ensure pedestrian safety. This study addressed this gap by examining how built environments around Low Income Housing Tax Credit (LIHTC) sites affect pedestrian-vehicle crashes in Austin, Texas. We employed the two-level negative binomial regression to clarify the impacts of street segment-level and neighborhood-level built environments on pedestrian crashes around LIHTC complexes. We found that higher speed roads, traffic-generating land uses, higher transit stop densities, and higher four-or-more-leg intersection densities may hinder pedestrian safety. Conversely, local roads as well as single-family residential parcels and connected sidewalks along street segments may enhance pedestrian safety around LIHTC complexes. Our results may inform planners and policymakers on how to enhance pedestrian safety for subsidized housing by modifying surrounding environments and how to provide better site selection considerations for subsidized housing to ensure pedestrian safety.     

基于街景数据的建成环境与街道活力时空分析——以深圳福田区为例

建成环境对街道活力的影响是国内外城市研究的热点议题。然而,对于建成环境要素的测度与评估多偏重于二维建成环境指标,尚未充分挖掘三维建成环境指标。以深圳市福田区为例,采用街景数据、路网数据、POI数据及移动互联网位置服务数据,建立周末分时段模型,探讨商业街道和生活街道活力的时空间分布特征及建成环境对其产生的影响。结果表明：① 商业街道上居民全天活动的峰值时段为18:00~20:00,生活街道上居民全天活动的峰值时段为11:00~13:00。② 深圳市福田区街道活力总体呈现多中心结构,随时间变化显现出明显的空间差异。③ 不同的建成环境指标对街道活力的作用时段与影响程度存在差异。提高功能混合度有利于提升商业街道凌晨、上午和夜间的活力及生活街道午后和傍晚的活力;过宽的相对步行宽度对生活街道活力提升有抑制作用,更安全的步行环境对商业和生活街道夜间活力提升有促进作用;界面连续程度高的商业街道午后及夜间的活力更强,界面多样性丰富的生活街道白天活力更强。     

“The Corner of Avenue A and Twenty-Third Street”: Geographies of Street Numbering in the United States

The designation of streets by number is one of the hallmarks of North American urbanism, yet very few studies have examined the geographies of street numbering in U.S. cities and towns. This article provides one of the first comprehensive, nationwide assessments of the spatial distribution of street numbering and lettering practices across the United States. Drawing on data collected from Google Maps, census records, state almanacs, and related sources, we analyze the proportion of incorporated places in all fifty U.S. states that have adopted some form of street numbering or lettering; the regional variation in the prevalence of alphanumerical systems of street designation and the relationships between the occurrence of street numbering, population size, and date of incorporation. In doing so, the broader aim of this study is to undertake the empirical groundwork needed to develop a more nuanced critical theory of the social production of calculable space.     

基于神经网络的街道渐进式选取

定义了街道网选取所需的相关参数,训练并获取计算街道相对重要性的神经网络模型,提出了利用该模型进行渐进式街道选取的方法.     

Evolution of the commercial blocks in ancient Beijing city from the street network perspective

The synergistic relationship between urban functions and street networks has always been a focus in the field of urban research and practice. From the perspective of street networks, by adopting space syntax, this study analyzed the deep structural characteristics and potential evolution rules of commercial blocks attached to street networks in different periods, as well as the corresponding economic, political, and cultural characteristics of ancient Beijing city over the past 800 years. By combining these with changes in the street network, we further explained the function mechanism of layout and level adjustment in commercial blocks, and the influence of the street network on commercial blocks in the process of historical change. The main conclusions included the following: (1) The urban centripetal-centrifugal siphon effect: the layout form, topological structure, and traffic mode changes in the street network had corresponding guidance for the layout and hierarchical system of commercial blocks, while the centripetal development of the street network could guide the agglomeration effect of commercial blocks, although centrifugal development caused commercial blocks to display outward evacuation. (2) Stage transformation from mutation node to smooth development: the layout of commercial blocks came to depend on the ability to cross the commuting flow center, which originally relied on the accessibility of transportation nodes as local centers. Changes in traffic modes mainly affected the adjustment of the first-level commercial blocks, which easily led to overall layout mutation. Traffic levels have an obvious positive hierarchical relation with the second- and third-level commercial blocks. (3) The adaptation of traditional commercial blocks to the needs of a modern city: affected by the different emerging times and unevenness of the original commercial foundation, commercial blocks have formed various developmental models that meet the needs of modernization, and reach a balance between cultural continuity and functional adaptation.     

校园能源监管WebGIS的设计与实现

"校园能源监管平台"作为校园能源管理的有效手段,建设形式多以信息管理系统为主,缺乏地理信息直观表达和分析能力。本文将WebGIS引入能源监管平台建设,结合Flex、ASP.NET技术,构建B/S模式的"校园能源监管WebGIS系统"。利用服务接口技术进行系统构架设计,保证对现有能源监管平台改动的最小化,通过二维三维相结合的方式对能源信息进行展示,提高能源信息地理位置的直观性,通过构管线管理和路灯控制等功能模块,有效增强能源地理信息管理和分析能力,为能源监管平台建设提供了一种新思路。     

基于GIS的呼和浩特市区街道信息变迁分析

基于人文地理学、城市地理学理论,运用历史文献和统计分析方法,运用GIS,并参阅呼和浩特市地名志、呼和浩特市新城区志等资料,对近百年来的呼和浩特市街道信息变迁进行分析。研究结果表明,近百年呼和浩特市街道数量明显增多;新建街道主要向东南方向扩展;街道名称的变化反映了不同时期的社会背景。