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Hybrid Strategy (hybrid + strategy)
Selected AbstractsThe value of assessing weights in multi-criteria portfolio decision analysisJOURNAL OF MULTI CRITERIA DECISION ANALYSIS, Issue 5-6 2008Jeffrey M. KeislerArticle first published online: 28 SEP 200 Abstract Analytic efforts in support of portfolio decisions can be applied with varying levels of intensity. To gain insight about how to match the effort to the situation, we simulate a portfolio of potential projects and compare portfolio performance under a range of analytic strategies. Each project is scored with respect to several attributes in a linear additive value model. Projects are ranked in order of value per unit cost and funded until the budget is exhausted. Assuming these weights and scores are correct, and the funding decisions made this way are optimal, this process is a gold standard against which to compare other decision processes. In particular, a baseline process would fund projects essentially at random, and we may estimate the value added by various decision processes above this worst case as a percentage of the increase arising from the optimal process. We consider several stylized decision rules and combinations of them: using equal weights, picking one attribute at random, assessing weights from a single randomly selected stakeholder. Simulation results are then used to identify which conditions tend to make which types of analytic strategies valuable, and to identify useful hybrid strategies. Copyright © 2009 John Wiley & Sons, Ltd. [source] Deep Start: a hybrid strategy for automated performance problem searchesCONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 11-12 2003Philip C. Roth Abstract To attack the problem of scalability of performance diagnosis tools with respect to application code size, we have developed the Deep Start search strategy,a new technique that uses stack sampling to augment an automated search for application performance problems. Our hybrid approach locates performance problems more quickly and finds performance problems hidden from a more straightforward search strategy. The Deep Start strategy uses stack samples collected as a by-product of normal search instrumentation to select deep starters, functions that are likely to be application bottlenecks. With priorities and careful control of the search refinement, our strategy gives preference to experiments on the deep starters and their callees. This approach enables the Deep Start strategy to find application bottlenecks more efficiently and more effectively than a more straightforward search strategy. We implemented the Deep Start search strategy in the Performance Consultant, Paradyn's automated bottleneck detection component. In our tests, Deep Start found half of our test applications' known bottlenecks between 32% and 59% faster than the Performance Consultant's current search strategy, and finished finding bottlenecks between 10% and 61% faster. In addition to improving the search time, Deep Start often found more bottlenecks than the call graph search strategy. Copyright © 2003 John Wiley & Sons, Ltd. [source] An Examination of the Effects of Accountability when Auditors are Uncertain about the Views of Superior PartnersINTERNATIONAL JOURNAL OF AUDITING, Issue 2 2001Steven E. Kaplan This experiment focused on the effect of accountability on senior audit managers' reporting decisions related to ambiguous scenarios, where the auditors could only speculate on the views of superior auditors on specific reporting issues. It examines the potential effect of accountability on the relationship between judgments an auditor would make versus the judgments the auditor perceives superior partners would make. In particular, accountable auditors were predicted to engage in a hybrid strategy of processing information with more effort and of complying more with views they perceived to be held by the superiors. Consistent with the acceptability heuristic, the results indicate that accountability is associated with greater agreement between self-judgments and judgments the auditor perceives superiors would make. However, contrary to Tetlock's (1992) theory but consistent with some prior research (Johnson and Kaplan, 1991; Hoffman and Patton, 1997), the accountability treatment did not significantly affect the auditors' processing of information. [source] Competitive affinity capillary electrophoresis assay based on a "hybrid" pre-incubation/on-capillary mixing format using an enantioselective aptamer as affinity ligandJOURNAL OF SEPARATION SCIENCE, JSS, Issue 12 2008Josephine Ruta Abstract In this paper, we describe an aptamer-based competitive affinity CE (ACE) assay involving (i) the pre-incubation of the target (D-arginine) and the specific ligand (anti-D-arginine-L-RNA aptamer) before (ii) the competition with the labeled target (dansylated D-arginine) through an on-capillary mixing strategy. The effects of some critical operating parameters such as the applied voltage and the sample-aptamer mixture plug length on the assay sensitivity were investigated. The ACE assay appeared particularly dependent on the plug length of the pre-incubated sample-aptamer solution. It was shown that this "hybrid" strategy significantly improved the assay sensitivity relative to that obtained with a "full" on-capillary mixing approach. [source] Government intervention in the economy: a comparative analysis of Singapore and Hong KongPUBLIC ADMINISTRATION & DEVELOPMENT, Issue 5 2000Newman M. K. LamArticle first published online: 5 FEB 200 Singapore and Hong Kong are very different and yet very similar in many respects. A study of their current profiles and historical development indicates that the two have achieved comparable economic successes through different development strategies. After World War II, Singapore gained political independence while Hong Kong achieved economic restructuring. The Singapore government adopted an interventionist approach to develop its economy, while the Hong Kong government followed the laissez-faire principle. However, as the two were maturing socially and economically in the last few decades, both governments found the necessity to adopt a hybrid strategy of mixing economic interventions with the free-market approach. An examination of public finance and economic policies since the onset of the Asian economic turmoil shows that the two have become increasingly similar in their economic approaches, with heavy emphasis on stabilizing the economy and stimulating business activities through government initiatives. Based on their projected economic, social and political development, the Hong Kong government is expected to become more interventionist while its Singapore counterpart is expected to go in the opposite direction. The economic development strategies of the two governments, coming from two extremes, will become more alike in the foreseeable future, for reasons of political feasibility in the former. Copyright © 2000 John Wiley & Sons, Ltd. [source] | ||||||||||