Households and the labour market for local areas
AbstractThe latest annual Statistical Bulletin on 'Work and worklessness among households' was published by the Office
for National Statistics on 26 August 2009. It gives information about working-age households, and about the adults and
children living in them, by household economic activity status. It includes estimates of workless working-age
households, and the adults and children living in them, by household type, region, and ethnicity. This article, using the
Annual Population Survey, considers more detailed geographical breakdowns of the same information. Detailed tables
reporting the sub-regional data can be found in an online version of this article which is available at: www.statistics.
gov.uk/articles/nojournal/householdslabourmarket-local-areas.pdf.
Quality measures
of household
labour market
indicators
AbstractThis article considers the reliability of
the two main survey sources for key
household labour market indicators, using
standard errors to inform users on the
accuracy of regular household analysis.
It shows the level of detail that provides
reliable analysis for different geographies.
It will also consider when to use the
Annual Population Survey (APS) instead
of the Labour Force Survey (LFS, see ONS
2009a).
Evaluation of buckling load and dynamic performance of steel shear wall retrofitted with strips made of shape memory alloy
One of the most imperfections of the steel shear wall is out of plane displacements that cause severe damage in both structural and non-structural elements. In this paper, the effects of shape-memory alloys on steel shear walls are investigated. First, a numerical analysis using the finite element method in ABAQUS software has been carried out according to an experimental test. The results of the numerical analysis have been verified with experimental results. Next, shape-memory alloy fibers have been added vertically and horizontally to various parts of the steel shear wall. The results show that retrofitting with the shape-memory alloy reduces the out-of-plane displacement of the steel shear wall under both cyclic and seismic loadings. Besides, the buckling load in the steel shear wall increases when it is retrofitted with the shape-memory alloy. Also, the total out-of-plane movement (accumulated absolute displacements) of the steel shear wall and non-structural damage are controlled by the characteristic of a shape-memory alloy material called “super-elastic”.