A Paradox of Progressive Saturation: The Changing Nature of Improvisation over Time in a Systems Development Project

In this paper, we investigate improvisation in a systems development project in the context of safety-critical, rigid quality-management standards. This study took place in a technology company in the automotive industry over a 31-month period and focused on the development of an innovative information system for automobiles. Our analysis traced different forms of improvised practice over the course of a systems development project at the company along with various triggers of improvisation. We found that, as the project progressed, the latitude to improvise became saturated by the increasing structural influences on improvisation. Yet, paradoxically, these structural influences provoked developers to improvise in ways that were progressively more innovative by drawing on accumulated knowledge; we call this phenomenon a “paradox of progressive saturation”. We identify ten forms of improvisation that unfold across different stages of a systems development project. We offer a conceptualization of the paradox of progressive saturation to represent the changing nature of improvisation over time, which contributes to the literature on improvisation in information systems development

Framework for ad-hoc invention sharing over a campus network

Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2007.Includes bibliographical references (leaves 57-60).In the future, there will be a large number of devices, and most of us will own more than one (some of us already do). Many individual innovators write programs that exploit features on such devices for interesting, non-standard uses. Usually such inventions are lost over time. In this thesis, we propose a framework called UniPlug that encourages rapid and ad-hoc sharing of such inventions. It works by providing distributed repositories to make inventions publicly available, and providing an easy to use client that locates and fetches inventions for devices that a user owns. We begin by introducing the problem and related work. We then formulate the problem technically and design a solution. This is followed by the description of the implementation of a proof of concept. Further, we discuss its applicability to disseminating inventions for medical devices along with an example scenario. We conclude by summarizing this work, and briefly describing our planned future work.by Durga Prasad Pandey.S.M

SAFE-FLOW : a systematic approach for safety analysis of clinical workflows

The increasing use of technology in delivering clinical services brings substantial benefits to the healthcare industry. At the same time, it introduces potential new complications to clinical workflows that generate new risks and hazards with the potential to affect patients’ safety. These workflows are safety critical and can have a damaging impact on all the involved parties if they fail.Due to the large number of processes included in the delivery of a clinical service, it can be difficult to determine the individuals or the processes that are responsible for adverse events. Using methodological approaches and automated tools to carry out an analysis of the workflow can help in determining the origins of potential adverse events and consequently help in avoiding preventable errors. There is a scarcity of studies addressing this problem; this was a partial motivation for this thesis.The main aim of the research is to demonstrate the potential value of computer science based dependability approaches to healthcare and in particular, the appropriateness and benefits of these dependability approaches to overall clinical workflows. A particular focus is to show that model-based safety analysis techniques can be usefully applied to such areas and then to evaluate this application.This thesis develops the SAFE-FLOW approach for safety analysis of clinical workflows in order to establish the relevance of such application. SAFE-FLOW detailed steps and guidelines for its application are explained. Then, SAFE-FLOW is applied to a case study and is systematically evaluated. The proposed evaluation design provides a generic evaluation strategy that can be used to evaluate the adoption of safety analysis methods in healthcare.It is concluded that safety of clinical workflows can be significantly improved by performing safety analysis on workflow models. The evaluation results show that SAFE-FLOW is feasible and it has the potential to provide various benefits; it provides a mechanism for a systematic identification of both adverse events and safeguards, which is helpful in terms of identifying the causes of possible adverse events before they happen and can assist in the design of workflows to avoid such occurrences. The clear definition of the workflow including its processes and tasks provides a valuable opportunity for formulation of safety improvement strategies

Software development and risk management in the safety critical medical device domain

The healthcare sector is one of the fastest growing economic sectors of today. The medical device domain is one part of that sector. An increasing part of functionality in medical devices and systems is implemented in software and many features should not be possible to implement without software. The use of medical software is an inherent risk to the patient and the outcome of a failure can vary from death to almost no effect at all. Risks and risk management is closely connected to medical device domain and it is crucial to all medical device companies to have a good risk management process. It is also stated in law that the companies developing medical devices must have a risk management process. One part of the research in this thesis focuses on the current state of practice in the medical device domain. As a result of this research, the need for high quality software in this domain has been identified and also the needs for new techniques, methods and processes to further improve software quality in the medical device domain. The results have been used to derive a set of requirements on new processes, methods and techniques in the area, to be used by researchers as a guide in the development of more adapted processes, methods and techniques for software development in the medical devices domain. The other part of the research in this thesis focuses on risk and is based on two experiments. A number of decisions regarding risks are taken during software project risk management and it is the people involved that make the decisions. Different people’s opinions about the importance of identified risks are investigated in an experiment and it is concluded that different participants have different opinions about how serious risks are concerning faults remaining after testing are. Probably it is possible to generalise this and conclude that in the software engineering process different people are more or less risk seeking. From the second experiment it could be concluded that multiple roles and thereby different experiences will affect the risk identification process. Involving multiple roles will result in a more complete set of identified risks than if only one role is included