3 research outputs found
Adapting to a new role: a study designed to help senior managers adapt to new positions after organisation restructuring
Get PDFThe work on which this thesis is based, studies the implementation phase of the total organisation restructure of the National Health Service in 1974 as experienced by a large group of Senior Pharmaceutical Managers who found it difficult to establish themselves in their new positions. The study starts in 1976 and researches to identify the nature and cause of the difficulties facing the managers. It is concluded that the probable cause is rooted in the sudden destruction of mechanisms developed before 1974 to assist new managers establish themselves in their positions. A solution is designed and tested before being implemented with the Senior Pharmaceutical Managers, By 1977 it had become clear that a similar situation faced other large groups of Senior Managers belonging to the Nursing and Works professions of the Health Service. As a result the project and study is continued to help these two other professions and with apparent equal success until 1985.A number of objectives are met during this study. A system is developed for facilitating role identification and implementation during a period of organisation restructuring as a means to help new managers adapt and become established in equally new positions. In addition this project is an example of the use of collaboration as a method to assist large numbers of senior managers belonging to Health Service professions meet radically new demands of role
Pathway to the Galactic distribution of planets : combined Spitzer and ground-based microlens parallax measurements of 21 single-lens events
Get PDFWe present microlens parallax measurements for 21 (apparently) isolated lenses observed toward the Galactic bulge that were imaged simultaneously from Earth and Spitzer, which was ~1 AU west of Earth in projection. We combine these measurements with a kinematic model of the Galaxy to derive distance estimates for each lens, with error bars that are small compared to the Sun's galactocentric distance. The ensemble therefore yields a well-defined cumulative distribution of lens distances. In principle, it is possible to compare this distribution against a set of planets detected in the same experiment in order to measure the Galactic distribution of planets. Since these Spitzer observations yielded only one planet, this is not yet possible in practice. However, it will become possible as larger samples are accumulated.Peer reviewe
Modelling water quality for water distribution systems
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Maintaining water quality in distribution systems has become a prominent issue in the study of water networks. This thesis concentrates on disinfectant and particle counts as two important indicators of water quality. The models discussed in this work are based on data collected by the author. The experimental set-up and procedure are described and observations of particle counts, particle counter size distributions, monochloramine as disinfectant, temperature, heterotrophic plate counts and epifluorescence microscopy counts are reported. A model of the response of particle counts to an increase in flow is developed. This model is obtained from specification derived from the data and assumptions, and is validated by its interpretability and its fit to data. A local shear-off density and an initial biofilm shedding profile were introduced and thus a linear model for this part of the water quality dynamics could be obtained. A procedure for the identification of the parameters of the local shear-off function and for the determination of the biofilm shedding profile is presented. This profile can be used to provide information about the status of the distribution system in terms of shear-off from the biofilm on the pipe walls. Monochloramine decay dynamics are investigated. The chlorine meter data is preprocessed with the help of titration data to correct meter drift. The data is then used in calibrating two different possible chlorine models: a model with a single decay coefficient and a model with bulk decay coefficient and wall demand (as used in Epanet). Important difficulties in identifying these parameters that come about because of the structure of the models are highlighted. Identified decay coefficients are compared and tested for flow, inlet chlorine and temperature dependence. The merits and limits of the approach to modelling taken in this work and a possible generalisation are discussed. The water industry perspective and an outlook are provided
