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  • Tradeoff and sensitivity analysis in software architecture evaluation using analytic hierarchy process
    (2005) Zhu, Liming; Aurum, Aybuke; Jeffery, David; Gorton, Ian
    Journal Article
    Software architecture evaluation involves evaluating different architecture design alternatives against multiple quality-attributes. These attributes typically have intrinsic conflicts and must be considered simultaneously in order to reach a final design decision. AHP (Analytic Hierarchy Process), an important decision making technique, has been leveraged to resolve such conflicts. AHP can help provide an overall ranking of design alternatives. However it lacks the capability to explicitly identify the exact tradeoffs being made and the relative size of these tradeoffs. Moreover, the ranking produced can be sensitive such that the smallest change in intermediate priority weights can alter the final order of design alternatives. In this paper, we propose several in-depth analysis techniques applicable to AHP to identify critical tradeoffs and sensitive points in the decision process. We apply our method to an example of a real-world distributed architecture presented in the literature. The results are promising in that they make important decision consequences explicit in terms of key design tradeoffs and the architecture`s capability to handle future quality attribute changes. These expose critical decisions which are otherwise too subtle to be detected in standard AHP results.
  • Empowering the User in Product Design with Virtual Reality
    (2003) Aurum, Aybuke; Demirbilek, Oya
    Conference Paper
  • Virtual Collaborative Design
    (2005) Aurum, Aybuke; Demirbilek, Oya; Dasgupta, Subhasish
    Book Chapter
    Product failure due to consumer separation from the design process can cause customer dissatisfaction and damage to businesses. This article focuses on the concept of virtual collaborative design and analyses the benefits and the barriers to online user collaboration in the early stages of the design process for product development. Furthermore, the article reports findings based on a survey study conducted with four potential stakeholders; representative of consumers, software designers, industrial designers, and manufacturers.
  • Trends and determinants of Australian managed fund transaction costs
    (2003) Parwada, Jerry
    Journal Article
    This study examines how the termination of superannuation investment mandates contributes to the departure of top fund managers in companies delegated the portfolio management role. Terminations of superannuation plan mandates increase the probability of a fund company changing the responsible fund manager. Objective-adjusted returns are also significant managerial turnover considerations. These results illustrate that significant losses of superannuation fund clients act as an external control mechanism in the investment management industry that complements internal managerial performance measures.
  • Effects of Bank Funds Management Activities on the Disintermediation of Bank Deposits
    (2004) Parwada, Jerry; Allen, David
    Journal Article
    This study investigates the alleged disintermediation of banks’ traditional deposit-taking in favour of investment management activities. Using data on Australian bank-affiliated funds and a nine-year record of the parent banks’ liability balances, this study finds that managed funds do not displace bank liabilities. Prudential capital adequacy requirements dissuade banks from using in-house managed investments as indirect conduits for raising funds in the same manner as deposit-taking.
  • Pension plan investment management mandates: An empirical analysis of manager selection
    (2005) Parwada, Jerry; Faff, Robert
    Journal Article
    We examine the impact of several factors on the selection of portfolio managers for Australian pension plan mandates. Performance measures do not affect the probability of a mandate allocation. Pension sponsors tend to choose managers with top-quartile five-year performance who have recently beaten a market benchmark. Management expenses have a negative impact on a manager’s chances. A surprising result is sponsors’ tolerance for high portfolio trading costs. Mandates are spread across manager investment styles. The style and institutional attributes of preferred managers suggest trustees’ reputation and prudential concerns matter, particularly for the aggregate annual mandate allocations.