This paper examines some of the problems experienced by IONA Technology’s Orbix Generation 3 maintenance and enhancement team and how the adoption of Extreme Programming has further improved the team’s ability to deliver quality support and enhancements to the products they work on. The issues identified and discussed are common issues for companies moving from the start-up pressures of time to...

This paper is based on Wald Lectures given at the annual meeting of the IMS in Minneapolis during August 2005. It is a survey of the theory of large deviations. 1. Large deviations for sums. The role of " large deviations " is best understood through an example.

In this research we focus on the link between response style behaviour in answering rating data such as Likert scales and the number of response categories that is offered. In a split-ballot experiment two versions of a questionnaire were randomly administered. The questionnaires only differed in the number of response categories, i.e. 5 vs. 6 categories. In both samples a latent-class confirma...

The Customer is the only non-developer role in eXtreme Programming (XP). Initial XP literature [1, 2] provided little guidance concerning this role; however Beck & Fowler did acknowledge the risk associated with the Customer role: All the best talent and technology and process in the world will fail when the customer isn’t up to scratch [1, p.17] Our research [4] is beginning to explore the pra...

User stories form the heart of the Extreme Programming methodology planning game. In its turn, Extreme Programming is one of the supporting pillars of the wider Agile Software Development process. The user stories form a set of central work products that determine the software development processes. In the spirit of Extreme Programming the production of user stories is kept as simple as possibl...

System Metaphor is one of the core practices of the software development process known as “Extreme Programming” (XP). Unfortunately, the System Metaphor practice is poorly understood, and is the practice XP teams most commonly choose to ignore. We provide a simple, structural model of system metaphors, based upon Peircean semiotics, giving a fundamental account of the way metaphors can contribu...

This paper describes the incremental adoption of XP (extreme programming) practices. The relationship of XP to previous work in usability engineering is described. The centrality of user stories is emphasized and illustrated with anecdotes from the development of systems traditionally and with XP.

Background and aims: Internet seems to be increasingly involved a major part of the daily lives of population. In recent years, many reports have confirmed the huge number of internet users worldwide. This article is seeking to explore the factors contributing to the tendency to internet in students of Shahrekord University of Medical Sciences (SKUMS) and aimed to recommend some preventive stra...