Defining the markets : an exploration of marketing managers' cognitive frameworks

School of Managemen

Lepton Flavor Violation in Little Higgs Models

We report on our study of the LFV processes \mu \to e\gamma, \mu\to eee and \mu \to e conversion in the context of Little Higgs models. Specifically we examine the Littlest Higgs with T-parity (LHT) and the Simplest Little Higgs (SLH) as examples of a Product group and Simple group Little Higgs models respectively. The necessary Feynman rules for both models are obtained in the 't Hooft Feynman Gauge up to order v^2/f^2 and predictions for the branching ratios and conversion rates of the LFV processes are calculated to leading order (one-loop level). Comparison with current experimental constraints show that there is some tension and, in order to be within the limits, one requires a higher breaking scale f, alignment of the heavy and light lepton sectors or almost degenerate heavy lepton masses. These constraints are more demanding in the SLH than in the LHT case.Comment: 6 pages, 3 figures, to appear in Proceedings of the XXXIII Intl. Conf. of Theoretical Physics, "Matter to the Deepest", Ustron, Poland, September 11-16, 2009; v2: comments and references adde

A configurational approach to the dynamics of firm level knowledge

Whilst there has been exponential growth in the work on the nature of organisational knowledge, relatively little progress has been made in terms of understanding the way in which knowledge specifically impacts on the firm. The aim of this paper is to further this understanding by developing a series of configurations representing some of the potential ways that knowledge is composed in organisations, with those components being tacit, explicit, architectural, component, individual and collective knowledge

Educational Attainment, Labour Market Conditions and Unobserved Heterogeneity: The Timing of First and Higher-Order Births in Britain

This paper analyses the effects of women’s education and aggregate unemployment rates on fertility in Britain. We combine micro-data on two cohorts who had different experience of education with macro-data on labour market conditions and examine how these factors impacted on the timing of births in Britain. We present results from hazard models estimated separately for each of two cohorts. The models analyse the timing of the first and second births, focusing on the associations of birth hazards with education level and a time-varying unemployment covariate. In addition we include in the models a range of other factors which may influence fertility behaviour and we utilise a method of controlling for unobserved heterogeneity in a robust fashion

Modelling the physics of high speed product-weighing

Compac Sorting Equipment Auckland (Compac) manufactures and exports high-speed, accurate sorting systems for fruit and vegetables. Their sizers operate at between 10-15 pieces of fruit per second per lane. They weigh each piece of fruit individually, using a pair of cantilever loadcells, in less than 1/10 of a second. Compac wanted a mathematical model of the weighing process, that will help them to accurately weigh heavier fruit (more than 250g) at higher speeds (in less than a tenth of a second). They also asked for help with easing back on the size and stability of the weighing assembly, which would reduce the physical size and manufacturing cost of the overall system

Internal ballistics model update for ASRM dome

A previous report (no. 5-32279, contract NAS8-36955, DO 51) describes the measures taken to adapt the NASA Complex Burning Region Model and code so that is was applicable to the Advanced Solid Rocket Motor as envisioned at that time. The code so modified was called the CBRM-A. CBRM-A could calculate the port volume and burning area for the star, transition, and cylindrically perforated regions of the motor. Described here is a subsequent effort to add computation of port volume and burning area for the Advanced Solid Rocket Motor head dome. Sample output, input, and overview of the models are included. The software was configured in two forms - a stand alone head dome code and a code integrating the head dome solution with the CBRM-A

Bone fracture incidence, measurement and adaptation: An exploration through the continuum from incidence to measurement and adaptation

This research encompasses four studies exploring bone adaptation, fracture incidence, and preventative measures to decrease fracture risk and increase bone health. Study one was a clinical audit exploring incidence rates for appendicular fractures in children in Western Australia over ten years. Diagnostic and remedial approaches were explored in studies two, three and four by examining the between-day reliability of upper limb scans; reliability of the osteogenic index (OI) for upper-body strength and power exercises; and the diagnostic value or utility of using pQCT in disease profiling, respectively. Fracture rates in the limbs of children were found to be increasing each year, particularly in the forearm, and regardless of gender, between 2005 and 2015, similar to international trend data. pQCT was established as a reliable tool for quantifying upper limb diaphyseal measurements. The OI had varying reliability depending on the equation used, exercise type and exercise intensity when measured using accelerometers at multiple locations. Lastly, paediatric populations with low motor competence and/or neuromuscular disorders were disease profiles which had a measurably negative influence on bone when compared to unaffected controls. The increase in fracture incidence in Western Australia is a concerning trend for bone health in children and adolescents that requires lifestyle and population-based interventions to arrest this incremental problem. pQCT may be a valuable tool for disease profiling with area measurements for bone and some muscle variables more reliable than volumetric measurements in the upper limbs. The OI is a more reliable tool when measuring strength exercises than power exercises; and individuals with a greater risk of weaker bones should apply more daily load to increase their overall bone health. Interventions should be put into place to rehabilitate individuals with already weaker bones, such as targeted and well-designed exercise programs supported by good nutritional practices

Improving driver behaviour by design: a cognitive work analysis methodology

Within the European Community both the environmental and safety costs of road transport are unacceptably high. ‘Foot-LITE’ is a UK project which aims to encourage drivers to adopt ‘greener’ and safer driving practices, with real-time and retrospective feedback being given both in-vehicle and off-line. This paper describes the early concept development of Foot-LITE, for which a Cognitive Work Analysis (CWA) was conducted. In this paper, we present the results of the first phase of CWA – the Work Domain Analysis, as well as some concept interface designs based on the WDA to illustrate its application. In summary, the CWA establishes a common framework for the project, and will ultimately contribute to the design of the in-vehicle interfac