北京东城余园

余园位于北京东城东厂胡同,原为清代大学士瑞麟的宅园.此园规模很大,建筑密度较小,而且基本上集中于东南一区,西部则为大片空地,体现出文人园疏朗朴素的气质.园中设有八角形西洋式建筑,兼作观景平台;园中假山主要以土山为主,在一些关键部位和重点景区堆叠青石,东部辟有长形水池,通过假山上的蓄水池注水;花木以单株欣赏与成片效果相映衬,辅以紫藤架,景色幽胜.通过文献考证和现场调研,对这座宅第花园的历史沿革、基本布局以及造园手法进行了探讨.     

德国杜伊斯堡市两次规划比较研究——对首钢工业改造的启示

针对20世纪90年代至今德国鲁尔区的杜伊斯堡市在20余年内经历的两次大规模的市内总体规划,从规划背景、规划定位、规划策略及规划效果等层面进行了较深入的比较研究,并借鉴其规划经验,指出对北京首钢工业区改造规划的启示     

鄂西黑色瓦板岩矿床地质特征

本文介绍了鄂西黑色瓦板岩的分布状况、矿床特征,分析了黑色瓦板岩的找矿标志,指出了找矿方向。     

An evaluation of resident exposure to respirable particulate matter and health economic loss in Beijing during Beijing 2008 Olympic Games

Previous epidemiological studies showed that air pollutants, especially respirable particulate matter, including PM₁₀, could impose harmful effects on human health. The assessment of the effects of PM₁₀ on mortality and morbidity makes an important basis for enhancing pollution control efforts, and for protecting public health. In this study, we measured the levels of Beijing residents' exposure to PM₁₀ during three different time periods around the Beijing Olympic Games held in 2008, and calculated the economic cost associated with human health. A comparative analysis of human exposure to PM₁₀ and associated health economics was also made to see the difference between 2005 and 2008. GIS technology was employed to interpolate the distribution of population and PM₁₀ data collected by 27 stations at a scale of 1 km × 1 km. Study results show that Beijing's population is distributed in a highly inhomogeneous manner, with the majority of people dwelling in the city proper. During the Olympic Games, population-weighted PM₁₀ exposure came down by 46% and 19% respectively, compared with the pre-OG and the post-OG periods. Consequently, the economic cost associated with human health during the Games came down by 38% and 16% respectively, compared with the pre-OG and the post-OG periods. Comparative analysis shows that during the Olympic Games, both PM₁₀ and the economic cost associated with health as a proportion of GDP sat at the bottom of the 4-year statistics, indicating that in addition to favorable weather conditions, enhanced traffic and emission control policies and measures have produced a noticeable effect on PM₁₀ reduction.     

论京津冀城市发展立体绿化的必要性

立体绿化是在当前城市土地供应紧张与绿化率普遍偏低的矛盾下催生的一种绿化形式.立体绿化因其占地少、绿化效果明显而备受当代城市的推崇.京津冀作为我国北方一个人口、工业最为密集的城市带,土地紧张的情况更是不言而喻.这些地区如能通过发展立体绿化来增加的城市绿化率,对于改善城市环境质量,打造生态宜居城市,将大有裨益.     

回答一个核心问题,把握十个关系——《北京城市总体规划(2016年—2035年)》的转型探索

分析了北京新版城市总体规划面临的转型发展时代背景,介绍了新版总规的编制重点是系统回答"建设一个什么样的首都,怎样建设首都"这个核心问题.结合新版总规编制实践,分析了北京在优化提升"都"与"城"关系、"舍"与"得"关系、"一核"与"两翼"关系、城市规模与资源环境承载力的关系等10个方面的规划转型探索.     

Contributions of the Usage and Affective Experience of the Residential Environment to Residential Satisfaction

The existing literature has documented that housing conditions, neighborhood characteristics, and socioeconomics are important determinants of residential satisfaction. However, the contribution of the actual usage of the residential environment to residential satisfaction has rarely been studied. To help fill in this gap, this study examines the contribution of the usage of housing and neighborhoods as well as the affective residential experience to residential satisfaction. We apply a subjective well-being framework and consider residential satisfaction and residential affective experience as two constituent components of the residential domain subjective well-being. Data were collected in Beijing from November 2011 to June 2012. The results show that home and neighborhood activities significantly affect residential satisfaction; higher levels of valence and activation of daily activities at home and in the neighborhood lead to more residential satisfaction.     

阿尔金山西部区域化探数据处理方法对比研究

分别采用常规统计法(对数)、EDA法和分形法(含量-频数法和含量-面积法)对阿尔金山西部地区水系沉积物As元素数据进行处理。不同方法所得结果相差较大,其中含量-面积法最大,常规统计法(对数)和EDA法次之,含量-频数法最小。通过对比异常圈定结果及与矿点对比情况认为,常规统计法(对数)确定的异常下限更适合本研究区,其它方法造成异常面积过大或过小,会给异常查证带来困难。因此,在实际工作计算异常下限之前要充分分析其原始数据分布规律,考虑其地球化学数据的分布模式,其次要与实际地质情况相结合,选择较适宜的异常下限计算方法。     

DZ40M钴基合金铝化物涂层的循环氧化

以新型定向凝固钴基高温合金ＤＺ４０Ｍ为基体,研究其低压化学气相沉积铝化物涂层的循环氧化行为,发现该涂层具有较高的抗循环氧化性能,涂层与基体结合良好。涂层退化主要是由外表面氧化膜的愈合消耗Ａｌ源所造成,沉积渗剂中加入Ｔｉ可加速涂层的退化。     

西部煤炭开发引起的主要生态问题及防治对策

文章结合西部地区环境脆弱和干旱、半干旱的特点 ,论述了西部煤炭开发引起的主要生态问题及其影响 ,提出了解决问题的对策和措施