AutoCAD VBA的二次开发实现地籍图的自动修正

农村宅基地使用权的测绘工作中,根据影像图绘制成的地籍图,房屋边界点与实测点之间存在偏差,需大量修正。因而,本文基于AutoCAD平台,采用VBA进行程序设计。确定图形中房屋边界点与实测点位置对应关系,并重新绘制房屋,实现房屋边界点到实测点的自动归位以及房屋属性的自动添加,最终实现地籍图的自动修正。程序可完成90%以上的修正工作,大大减少了内业工作量,且修正后的地籍图符合项目要求。     

Post-Bam earthquake: recovery and reconstruction

This paper gives a brief explanation of the earthquake in Bam. It also reports on the rescue and relief operations, including the construction of emergency shelters and temporary housing, and on the country’s plan for the reconstruction of the city, which includes debris removal, the rebuilding of rural and urban residential and commercial units, the reconstruction of state and public buildings and public facilities such as schools, rural and urban water aqueducts and grids, the construction of a sewage system, power network and telecommunication system, the provision of water to orchards and farmlands, the renovation of industries and the revival of the cultural heritage, particularly the historical Bam citadel, among others. We also report briefly on the effect of the Bam earthquake on the Iran Earthquake Risk Reduction Strategy and actions.

Effects of accessibility and environmental health risk on housing prices: a case of Salt Lake County,Utah

While transportation infrastructure can increase housing price by improving accessibility to opportunities, it generates environmental health risks, such as noise and air pollution, which may have negative effects on housing price. However, the combined effects of accessibility and environmental health risk on housing price have not been well examined in the literature, especially in the auto-oriented urban context of the United States. In this study, we use assessed housing value data and the hedonic model to examine the single-family housing market's reaction to accessibility and environment health risks in Salt Lake County, a growing metropolitan area in Utah experiencing significant air pollution. Three regression models are employed with the consideration of spatial effects: ordinary least squares (OLS), spatial lag regression (SLR), and hierarchical linear modeling (HLM, or multilevel modeling/MLM). By controlling for the influences of structural attributes and socioeconomic conditions, we find that the negative impacts (traffic noise and air pollution) of transportation systems on single-family housing prices are greater than the positive impact (accessibility). Single-family residents in Salt Lake County are willing to pay more to reduce environmental health risks than to get better accessibility. These findings are different from what have been found in some dense and compact urban areas in the literature. These findings suggest that people's willingness to pay for minimizing environmental health risks varies across different urban contexts.     

Homeownership and housing consumption change in Urban China: Guangzhou under market transition

ABSTRACT

Homeownership attainment is often seen as the first step in climbing the housing ladder and the building of wealth through acquisition of housing equity. While a number of authors have examined the issue of homeownership switch in China under market transition, the present paper is probably the first study on the extent of housing improvement in conjunction with and after the attainment of homeownership. Based on a household survey conducted in 2010, the study shows that ownership attainment in Guangzhou is generally accompanied by marked housing improvements, and subsequent moves bring further but percentage-wise much smaller improvements. While institution-related factors such as nature of work unit and occupational status might continue to be important, their effects on housing improvements are likely to be felt mainly through the income variable. But hukou status remains significant. More specifically, former peasants on the urban–rural fringe with claim to landownership rights have benefited most from the market-oriented land and housing reform.     

基于住宅价格视角的居住分异耦合机制与时空特征——以南京为例

城市住宅价格空间分异,是居住空间资源非均衡配置的市场化表达,映射出不同阶层社会群体对城市住宅的选择倾向与需求差异,与居住空间分异在机制和格局上存在一定耦合关联。以南京主城区商品房社区为研究对象,构建起住宅价格特征变量指标体系,采用地理加权回归模型,分析导致房价空间差异的主要因素、组合关系及时空演变特征。研究发现：社区服务档次、学区资源、环境区位、景观稀缺等能够体现居住群体经济实力、生活方式与文化品位的因素,是影响房价分异的主导要素并随时间不断强化;南京房价总体上呈现“圈层+扇形+飞地”的空间结构,高房价主要分布在城市中心、名校学区、高档封闭社区和山水景观别墅区;房价分异与居住分异在作用机制和空间格局上表现出显著的关联耦合特征。城市房价空间分异不止于表达,同时也是推动居住空间分异与再分化的重要驱动机制,并能够预判未来一段时期内城市居住空间分异格局演变的基本走势,可以为城市社会空间研究提供具有前瞻性的观察视角和分析工具。     

广州市家庭收入与住房特征对应关系的区位差异性

以广州市中心区(天河区)和郊区(南沙区)为研究案例,依托2010年中国(广东)家庭动态跟踪调查数据,基于家庭户住房的邻里特征、建筑特征、区位特征、家庭收入等13个指标构建路径分析模型,研究广州市居民家庭收入与住房特征的映射关系和影响方向。在此基础上,采用多群组路径分析方法研究区位因素对“收入→住房特征”的影响程度及其差异性。最后利用方差方程和均值方程,分析不同区位条件下(中心区和郊区)的住房特征差异。结果表明：① 家庭收入更显著地决定住房特征,对邻里特征的影响并不显著;② 区位对“收入→住房邻里特征”的关系具有显著调节作用,而对“收入→住房建筑特征”的调节作用较弱;③ 在中心城区和郊区的内部,家庭收入更显著地影响住房建筑特征,而对邻里特征基本无显著影响;④ 郊区家庭收入对公共交通时间便利性、住房面积、厕所设施水平、拥有住房数量、住房综合条件等几个主要住房特征指标的影响程度大于中心城区;⑤ 中心城区住房的邻里特征明显优于郊区,但建筑特征明显差于郊区。显示出广州市住房邻里特征与建筑特征在不同区位条件下的“互换特征”。     

广州市居民住房条件的空间分异格局与形成机制

以广州都市区1 361个社区的第六次人口普查住房数据为基础,从住房的建成年代、建筑结构、户均建筑面积、住房生活设施4个方面构建居民住房条件评价体系,分析其空间分异格局与形成机制。结果表明：① 广州市居民住房条件由中心向外围逐渐提升,具有“圈层基础上的多核心”式空间分异结构;② 户均建筑面积和建成年代是决定其住房条件差异的2项重要指标,旧城的住房条件异质性最高;③ 城市发展的历史进程、互换效应和过滤效应、高房价和高地价影响和强化了住房条件分异格局,制度性因素、政府决策和市场力量同时起到了引导和推动作用。     

基于家庭区位需求的城市住房价格模拟分析

目前关于城市住房价格异质性和影响因素研究多侧重于空间位置分析,从城市系统角度刻画住房价格分异现象有待进一步探索。根据“土地利用—交通相互作用理论”,城市空间的发展过程是各类活动通过交通相互作用的过程,本文构建了交通可达性模型,综合全市经济活动空间分布和交通网络评价城市区位条件,并以北京为例,从就业、教育、消费、医疗服务等各方面评价了城市区位条件,在此基础上依据家庭成员结构,模拟分析了家庭区位需求对住房价格的影响。案例研究表明,本模型对房价的模拟可以在全市范围内达到很好的效果;家庭的区位选择决定着住房价格的空间格局;各类活动中就业对北京市房价分布影响最为显著,其次是消费、教育,而医疗服务对住房价格影响相对较弱。此外,本文所提出的模型系统阐述了城市经济活动分布格局对住房价格的影响,经济活动分布发生变化时模拟结果随之变化,因此,本模型可以进一步拓展用于“以业带人”政策实验,模拟分析疏散各类经济活动后住房价格的变化,也为城市房价及土地市场分析研究提供模型方法上的参考。     

Transnationalism-integration nexus: Examining the relationship between transnational housing investment and homeownership status in Canada

The housing outcomes of immigrants in Canada vary mainly along ethnicity. However, many other factors including place of birth, length of stay in Canada, labour market outcomes, and discrimination among others also play a role. Although general patterns are observable at broad ethnic group levels, vast intra-group differences exist—with housing outcomes potentially being influenced by specific group behaviours such as transnational (housing) activities. This study investigates the relationship between homeownership in Canada and Ghanaian immigrant transnational housing investment. Logistic regression models are fitted on survey data collected among Ghanaian immigrants resident in the Greater Toronto Area. The results show an association between homeownership status in Canada and transnational housing investment. Interestingly, we found that immigrants with on-going housing projects in Ghana were more likely to own a house in Canada. Theoretically the findings demonstrate the importance of including a transnational perspective in immigrant housing integration research. The findings show that it is possible to simultaneously engage in transnational activities and remain integrated in the society of destination areas. This has wider implications for the transnationalism-integration debate within immigrant receiving nations across the world. Recognition of transnationalism as a possible conduit for enhancing integration in destination societies should result in eschewing alarmist perspectives which have been relied on to formulate anti-immigration policies.     

惠民县农村宅基地管理中存在的问题及对策

农村宅基地问题是农村工作的焦点。该文结合惠民县农村宅基地的实际情况,阐述了惠民县农村宅基地的使用现状,分析了农村宅基地管理中存在的主要问题,并提出了加强农村宅基地管理的几点对策。