深基坑开挖对其邻近CFG桩复合地基铁路影响的数值模拟

实现了CFG桩加固铁路路基和基坑开挖双排桩支护的有限元数值模型,在考虑地下水的情况下,采用不同的列车动态荷载值,改变开挖位置距复合地基之间的距离与基坑开挖深度的比值I／H,对邻近某城际铁路客运站双排桩支护的大型深基坑进行了有限元数值计算和分析。结果表明：小增量的改变列车动态当量荷载对路基沉降和基坑侧壁水平位移的影响不大,I／H比值控制在0．4—0．6时,以墙体水平位移和铁路路基沉降为约束条件的结果较为理想。     

湛江某围堰海堤变形监测实施研究

以湛江某围堰海堤变形监测为例,尝试了多种位移监测方法并比较其利弊,以求达到高精度位移监测的目的,为项目实施效果提供技术保障。     

Displacement Effects of Active Labour Market Policy: The Youth Labour Market in Finland

In 1994 the number of workers participating in active labour market programmes in Finland was 299,000. On average there where 125,000 workers in these programmes at any one time, the average length of participation in a programme being about 5 months. In relation to the 2.5 million-strong Finnish labour force, these figures are proportionally large. In 1994 the total expenditure on unemployment amounted to 6.7 per cent of GNP of which the share spent on active labour market programmes was about 25 per cent. The study investigates the displacement effects of active labour market programmes in the youth labour market in Finland. The two age groups analysed are 15-19-year-olds and 20-24-year-olds. The results, based on a VAR analysis of quarterly data from the period 1981.1-1995.2, suggest that the displacement effects of job-creation programmes may be substantial. The study cannot, however, provide any robust estimates of the likely size of such displacement effects on youth employment in Finland. This revised version was published online in July 2006 with corrections to the Cover Date.     

冷弯型钢结构住宅的抗震设计方法研究

根据冷弯型钢结构房屋的受力特征,将其性能划分为正常使用、可修和不倒塌三个水平,结构的目标位移根据其性能水平确定,并采用层间位移角予以量化;根据弹塑性动力时程分析结果,假定冷弯型钢结构房屋的位移模式为倒三角形式。借鉴线弹性单自由度体系的位移反应谱计算方法,提出冷弯型钢结构房屋的弹性和弹塑性位移反应谱的求解方法。     

Direct Displacement Effects of Labour Market Programmes*

Using a panel of 250 Swedish municipalities over the period 1987–1996, we examine the direct displacement effects of active labour market programmes (ALMPs). Compared to earlier studies on this topic, we have more and better data. Based on our GMM estimations, we find that there are direct displacement effects from subsidised employment (in the order of approximately 65%), but that there seem to be no (significant) displacement effects from training. This result seems to be robust to several alternative specifications.     

China''''s Auto Production,Sales Grow A Bit Slower in 2007

Auto production and sales remained stable in China last year,yet with growth a bit slower on lukewarm demand for vehicles of low engine displacement,sources from the Ministry of Commerce.     

‘Gentrification Without Displacement' and the Consequent Loss of Place: The Effects of Class Transition on Low‐income Residents of Secure Housing in Gentrifying Areas

The increasingly disputed concept of gentrification‐induced displacement is combining with the argument that the poor benefit from social mix to produce a theoretical case for ‘positive gentrification'. The notion that new middle‐class residents not only attract more investment but bring opportunities for ‘upward social mobility' to low‐income people who manage to stay in gentrifying areas has become policy orthodoxy. While there are scholarly challenges to the extent of these benefits, the disadvantages of imposed social mix on low‐income communities even where they are not physically displaced remain under‐researched. This article helps to fill this gap by reporting on research into the experience of long‐term low‐income residents of gentrifying neighbourhoods who managed to stay put. The research explores notions of social mix, place and displacement among residents of secure community housing in Melbourne, Australia (the equivalent of small‐scale social housing in Europe and North America) with the object of establishing whether the absence of physical displacement is sufficient to ameliorate gentrification's negative impacts. The findings demonstrate that transformations in shops and meeting places, and in the nature of local social structure and government interventions, cause a sense of loss of place even without physical displacement.