The geographic concentration of housing vouchers,Blacks, and poverty over time: a study of Cincinnati,Ohio, USA

Using data from the US Department of Housing and Urban Development (HUD) concerning Housing Choice Voucher (HCV, formerly called Section 8) recipients, the authors provide a spatial analysis in Cincinnati, Ohio, USA. ‘Hot spot’ analysis is utilized to detect areas with significant densities of voucher recipients compared with the surrounding environs. Results show that the implementation of Cincinnati's HCV program between 2000 and 2005 in conjunction with public housing transformation has not led to a greater dispersion of voucher recipients and either poverty or racial deconcentration. Many HCV households remain concentrated in hot spots. The implications for US low-income housing policy are discussed.     

Andalusia,Spain: An Assessment of Coastal Scenery

The 1101 km length of the Andalusian coast (Spain) was assessed for coastal scenery at 45 specific locations. Selected areas covered resort (3), urban (19), village (8), rural (10) and remote (5) bathing areas. Scenery was analyzed for physical and human parameters via 26 selected parameters. These parameters were obtained by interviews of >500 people on European beaches. Each parameter was assessed via a one-to-five-point attribute scale, which essentially ranged from presence/absence or poor quality (1), to excellent/outstanding (5). Results were subsequently weighted by interviewing >600 bathing area users (not all 26 parameters have equal weight) and subjected to fuzzy logic mathematics in order to reduce recorder subjectivity. High weighted averages for attributes 4 and 5 (excellent/outstanding) reflected high scenic quality, vice versa for attributes 1 and 2. Sites were classified into five classes ranging from Class 1 sites having top grade scenery to Class 5, poor scenery. Seven sites each were found in Classes 1 and 2; 10 sites each in Classes 3 and 5; 11 sites in Class 4. The finest coastal scenery was found in remote areas whilst urban areas scored mainly as Class 3 or 4. Three out of the ten rural sites had Class 3 and 4 values assigned them whereas the rest scored as Class 1 and 2; village sites invariably had scores within Class 3 and 4. Of the three resort sites investigated, one scored as a Class 1 site, the others as Class 3.     

景区详细规划内容深度分析

目前,<风景名胜区规划规范>对景区详细规划的内容深度和做法仍缺乏科学的界定,导致规划阶段划分模糊,对各规划阶段内容深度的规定不严密,用地分类不细致、兼容性差,且缺乏控制指标体系.景区详细规划的内容深度应达到"城市规划序列中的控制性详细规划"的内容深度,并需要引入城市规划中的"指标控制体系".     

3700系统地层倾角井下电子仪维修方法探讨--故障点迅速定位法

故障点迅速定位法形成的基础是将组成倾角仪的三支仪器作为一个完整的单片机控制系统对待,通过对CLS3700系统的地层倾角井下仪器单片机控制系统框图的分析,结合维修工作中的几个典型事例,对如何利用故障点迅速定位法快速排除故障进行了论述。     

黄山可持续发展生态境域的保护及存在问题

论述黄山风景名胜区是可持续发展的生态境域,简要介绍其功能,着重强调黄山风景名胜区资源保护的战略,并提出存在的几个问题。     

How does the representation rate of features in a landscape affect visual preferences? A case study from a post-mining landscape

Previous studies of visual preferences for landscapes have been dominated by papers monitoring the presence of individual landscape features or their physical attributes. The objective of our study has been to evaluate how the representation rate of these features affects visual preferences for a landscape. We have studied a post-mining landscape that provides component physical features of a diverse and contrasting character. On the basis of an analysis of surface images, in combination with a questionnaire survey, our study has determined that the representation rate of most evaluated features affects the aesthetic value of the entire landscape scene. It has been established that certain groups of features in a post-mining landscape evoke various preferential tendencies among the public. The aesthetic value of a landscape decreased with increasing representation of surface quarries and urban structures, while increased representation of water and of rural structures resulted in an increasing aesthetic value. Woody vegetation and arable land were most preferred when they were represented non-dominantly, while mining infrastructure features were evaluated most negatively when they were non-dominant features of the landscape. Our findings thus point to the importance of the representation rate of features in the landscape as one of the key factors influencing the visual perception of the entire landscape scene.     

PBX炸药细观结构冲击点火的二维数值模拟

为了研究冲击加载下非均质炸药的点火机理,对PBX炸药细观结构在冲击加载下的响应过程进行了二维数值模拟.首先对炸药颗粒的压制过程进行数值模拟,获得PBX炸药的细观结构模型.然后对炸药冲击点火进行数值模拟计算,考虑了热力耦合作用和炸药自热反应,分析了炸药颗粒尺寸、密度和黏结剂对炸药冲击点火的影响.结果表明,冲击作用下PBX...     

景观水体表观污染成因分析

景观水体的表观污染已经成为一个普遍面临的水环境污染问题,探寻其产生的原因具有非常重要的意义。文章在前人研究成果的基础上,从化学、物理、生态等方面对表观污染成因进行分析。目的是为了更好地维持景观水体生态平衡,控制水体污染,预防水体表观污染的发生提供参考。     

浅谈建设美丽旅游景区与旅游产业转型升级问题与措施

分析旅游产业转型升级,自身升级是重点,旅游产品升级是根本,旅游品牌是旅游景区和城市无形资产浓缩,以厦门市北辰山省级风景区创建国家4A级景区为案例,浅谈建设美丽旅游景区与旅游产业转型升级问题和措施,应注重发展模式,注重规划设计,注重优化建设,创新施工管理,根据国家工程建设及4A级景区规范标准,合理规划设计,结合景区实际,创新景区建设施工管理,完善基础配套设施,打造独具特色国家核心品牌,提升旅游品质,最大限度满足旅游需要,提升城市品牌,推进旅游战略新兴产业升级发展,促进经济社会转型升级,建设美丽厦门,直至美丽中国。     

山地绿道浅析——以福州鼓山绿道网规划为例

近年来福建省大力发展绿道网规划,积极推动单车生态旅游及相关产业发展,为绿道周边居民提供多样化的生活方式。山地绿道不同于城市绿道,山地环境的特殊性使其在规划中应着重于地形、空间、坡度、材质及生态保护等各方面的考虑。鼓山绿道网规划以风景区资源为背景,着重处理选线、景观节点、生态材质及与绿化之间的关系,通过规划突出福州城中山岳型国家级风景名胜区特色,展示闽都特色的山水文化。