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Introduction:

List of Papers for 2002:
(in reverse chronological order)

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ESD-WP-2002-08: Global Comparison Aggregation Services
by Hongwei Zhu, Stuart E. Madnick and Michael D. Siegel

Web aggregation has been available regionally for several years, but this service has not been offered globally. As an example, using multiple regional comparison aggregators, we analyze the global prices for a Sony camcorder, which differ by more than three times. We further explain that lack of global comparison aggregation services partially contribute to such huge price dispersion. We also discuss difficulties encountered in the manual integration of global web sources. Motivated by this example, we propose a context mediation architecture for global aggregation to address semantic disparities of global information sources. Global aggregation services can bring efficiency to the global market and can be useful for market research and other business uses.

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ESD-WP-2002-07: The Interplay of Web Aggregation and Regulation
by Hongwei Zhu, Stuart E. Madnick and Michael D. Siegel

The development of web technology has led to the emergence of web aggregation, a service that collects existing web data and turns them into more useful information. We review the development of both comparison and relationship aggregation and discuss their impacts on various stakeholders.

The aggregator's capability of transparently extracting web data has raised challenging issues in database and privacy protection. Consequently, new regulations are introduced or being proposed. We analyze the interactions between aggregation and related policies and provide our insights about the implications of new policies on the development of web aggregation.

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ESD-WP-2002-06: Evaluating Accident Models Using Recent Aerospace Accidents, Part 1: Event-Based Models
by Nancy Leveson

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ESD-WP-2002-05: ESD Internal Conference Extended Abstracts
by The ESD Colloquium Committee

This working paper contains the extended abstracts received to date for the ESD Colloquium to be held on May 29 and 30, 2002. A proceeding of the complete papers are planned to be published in advance of the colloquium.

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ESD-WP-2002-04: Do-It-Right-Fisrt-Time (DRFT) Approach to DSF Restructuring
by Ali A. Yassine, Daniel E. Whitney, Jerry Lavine, and Tony Zambito

In this paper, we argue, using two real-world applications from the automotive industry, that the biggest benefit of a Design Structure Matrix (DSM) model may come not from resequencing and partitioning, but rather from “rewiring” the process/blocks. By “rewiring” we mean redefining relationships among elements and/or inserting new elements into the matrix. This requires intimate understanding of the process and cannot be done with application of context-free partitioning algorithms.

The Do-it-Right-First-Time (DRFT) approach to DSM restructuring is another way to look at a DSM by inspecting the sources of iteration within a block and reversing it through inserting a DRFT activity at the beginning of the block. In other words, we reverse the traditional Design-Build-Test “Cycle” into a DRFT-Design-Build “Sequence”. That is, the "wiring diagram" of a process or system overpowers the behavior of the individual nodes, so changing the system requires changing the wiring.

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ESD-WP-2002-03: Designing a Requirement Driven Product Development Process
by Qi Dong and Daniel E. Whitney

This paper presents a technique to obtain a Design Structure Matrix (DSM) from a Design Matrix (DM). This technique enables us to obtain the design information flow pattern at early stage of the design, and apply the DSM system analysis and management techniques at the time when the most important decisions about the system and the design are made. The validity of this method is proven using a case study on the design integration process of an electrostatic chuck used in semiconductor wafer processing. The algorithm underlying this technique is also proven logically and mathematically to be valid.

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ESD-WP-2002-02: Improving the Software Upgrade Value Stream
by Brian Ippolito and Earll Murman

This paper reports findings from a two-year study to identify Lean practices for deriving software requirements from aerospace system level requirements, with a goal towards improving the software upgrade value stream. The study was undertaken as part of the MIT Lean Aerospace Initiative. Three detailed case studies and 128 surveys collected from ten ÒsuccessfulÓ mission critical aerospace software upgrade programs support seven major findings.

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ESD-WP-2002-01: ESD Terms and Definitions (Version 12)
by the ESD Symposium Committee: Tom Allen and Joel Moses, co-chairs, ESD Symposium Committee, Dan Hastings, Seth Lloyd, John Little, Don McGowan, Chris Magee, Fred Moavenzadeh, Debbie Nightingale, Dan Roos, Dan Whitney

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