Modelling the construction projects using plans of work

An overview of organization in the construction industry is identified from plans of work published in the UK. This provides a basis for identifying the essential steps through which any construction project must pass. It is shown that all construction projects pass through a set of stages of work, consisting of inception, feasibility, scheme design, detail design, contract formation, construction and commissioning. Although there may be changes to the sequence and importance of these stages, their identification helps in making judgements about organizational structure on construction projects.

The radial width of a coronal mass ejection between 0.1 and 0.4 AU estimated from the heliospheric imager on STEREO

On 15-17 February 2008, a CME with an approximately circular cross section was tracked through successive images obtained by the Heliospheric Imager (HI) instrument onboard the STEREO-A spacecraft. Reasoning that an idealised flux rope is cylindrical in shape with a circular cross-section, best fit circles are used to determine the radial width of the CME. As part of the process the radial velocity and longitude of propagation are determined by fits to elongation-time maps as 252±5 km/s and 70±5° respectively. With the longitude known, the radial size is calculated from the images, taking projection effects into account. The radial width of the CME, S (AU), obeys a power law with heliocentric distance, R, as the CME travels between 0.1 and 0.4 AU, such that S=0.26 R0.6±0.1. The exponent value obtained is compared to published studies based on statistical surveys of in situ spacecraft observations of ICMEs between 0.3 and 1.0 AU, and general agreement is found. This paper demonstrates the new opportunities provided by HI to track the radial width of CMEs through the previously unobservable zone between the LASCO field of view and Helios in situ measurements.

An inspector's-eye view - The prospective enforcement of work-related fatality cases

This paper concerns the prospective implementation of the proposed 'corporate killing' offence. These proposals suggested that the Health and Safety Executive (HSE)-the body currently responsible for regulating work-related health and safety issues-should handle cases in which a 'corporate killing' charge is a possibility. Relatively little attention has been paid to this issue of implementation. An empirical investigation was undertaken to assess the compatibility of the HSE's methodology and enforcement philosophy with the new offence. It was found that inspectors categorize themselves as enforcers of criminal law, see enforcement action as valuable and support the new offence, but disagree over its use. They also broadly supported the HSE taking responsibility for the new offence. This suggests that 'corporate killing' may not necessarily be incompatible with the HSE's modus operandi, and there may be positive reasons forgiving the HSE this responsibility.

A comparison of two editions of the RIBA plan of work

The RIBA Plan of Work describes the way a construction process should be organized. Although not officially approved by the RIBA council, a new plan of work was published in 2000 with the intention of replacing the RIBA Plan of Work, so it is useful to analyse both in terms of the organizational structure they impose upon construction projects. Using analytical principles from organizational theory, both plans are analysed by converting them into organizational matrices and assessing their relative complexities, the load on participants, decentralization of responsibility, number of interfaces and the extent to which they provide for co-ordination and control. This demonstrates first, that the analysis of organizational structure is an appropriate approach for undertaking comparisons of such documents; and second, that while both plans of work are of roughly equal complexity, the new one is more demanding on the participants; produces a higher number of interfaces between processes, and provides for more co-ordination than the old one. Neither plan deals with controlling the output of individuals, leaving it as an internal matter for each participating organization.

Communication and social regulation. the criminalization of work-related death

This paper addresses the movement towards criminalization as a tool for the regulation of work-related deaths in the United Kingdom and elsewhere in the last 20 years. This can be seen as reflecting dissatisfaction with the relevant law, although it is best understood in symbolic terms as a response to a disjunction between the instrumental nature and communicative aspirations of regulatory law. This paper uses empirical data gathered from interviews with members of the public to explore the role that such an offence might play. The findings demonstrate that the failures of regulatory law give rise to a desire for criminalization as a means of framing work-related safety events in normative terms.

Is DARTEL-based voxel-based morphometry affected by width of smoothing kernel and group size? A study using simulated atrophy

Purpose: To quantify to what extent the new registration method, DARTEL (Diffeomorphic Anatomical Registration Through Exponentiated Lie Algebra), may reduce the smoothing kernel width required and investigate the minimum group size necessary for voxel-based morphometry (VBM) studies. Materials and Methods: A simulated atrophy approach was employed to explore the role of smoothing kernel, group size, and their interactions on VBM detection accuracy. Group sizes of 10, 15, 25, and 50 were compared for kernels between 0–12 mm. Results: A smoothing kernel of 6 mm achieved the highest atrophy detection accuracy for groups with 50 participants and 8–10 mm for the groups of 25 at P < 0.05 with familywise correction. The results further demonstrated that a group size of 25 was the lower limit when two different groups of participants were compared, whereas a group size of 15 was the minimum for longitudinal comparisons but at P < 0.05 with false discovery rate correction. Conclusion: Our data confirmed DARTEL-based VBM generally benefits from smaller kernels and different kernels perform best for different group sizes with a tendency of smaller kernels for larger groups. Importantly, the kernel selection was also affected by the threshold applied. This highlighted that the choice of kernel in relation to group size should be considered with care.

On the speed of the eddy-driven jet and the width of the Hadley cell in the Southern Hemisphere

A strong correlation between the speed of the eddy-driven jet and the width of the Hadley cell is found to exist in the Southern Hemisphere, both in reanalysis data and in twenty-first-century integrations from the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report multimodel archive. Analysis of the space–time spectra of eddy momentum flux reveals that variations in eddy-driven jet speed are related to changes in the mean phase speed of midlatitude eddies. An increase in eddy phase speeds induces a poleward shift of the critical latitudes and a poleward expansion of the region of subtropical wave breaking. The associated changes in eddy momentum flux convergence are balanced by anomalous meridional winds consistent with a wider Hadley cell. At the same time, faster eddies are also associated with a strengthened poleward eddy momentum flux, sustaining a stronger westerly jet in midlatitudes. The proposed mechanism is consistent with the seasonal dependence of the interannual variability of the Hadley cell width and appears to explain at least part of the projected twenty-first-century trends.