Roger D. H. Warburton

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The Putnam model can be used to predict and manage software development projects. It is a management tool that takes, as input, easily obtained manpower data and produces cost and schedule estimates. This paper examines data from two real-time software projects and analyzes the applicability of the Putnam model. We propose a variation ation of the model(More)
Publishers page: Please note: Changes made as a result of publishing processes such as copy-editing, formatting and page numbers may not be reflected in this version. For the definitive version of this publication, please refer to the published source. You are advised to consult the publisher's version if you wish to cite this paper. (2004), " Further(More)
BACKGROUND Cerebellar ataxias are the result of diverse disease processes that can be genetic or acquired. Establishing a diagnosis requires a methodical approach with expert clinical evaluation and investigations. We describe the causes of ataxia in 1500 patients with cerebellar ataxia. METHODS All patients were referred to the Sheffield Ataxia Centre,(More)
We are interested in evaluating the effects of software tools and methods on cost and errors over the life-cycle of a software project. The adopted approach is to perform controlled experiments. The experiments are designed to be conducted for selected variables using standard experimental design strategies. We discuss the use of the fractional factorial(More)