Showing papers by "Raymond A. Patterson published in 2010"
TL;DR: This paper proposes a decision-support system for disaster response and recovery using hybrid meta-heuristics, which aims to address the challenges of timely and appropriate task assignment and sequencing in the face of operational constraints.
Abstract: Disaster response and recovery are crucial phases of disaster management. Decision-support systems used in disaster management must cope with the complexity and uncertainty involved with the scheduling and assignment of differentially-skilled personnel and assets to specific tasks. Operational constraints—such as workload and labor requirements, precedence constraints, resource availability, and critical deadlines among others—make timely and appropriate task assignment and sequencing difficult. Failure to assign personnel in an efficient and effective manner may result in unnecessary fatalities and significant additional loss of property as well as damaging the reputation of the disaster management organizations. Therefore, this paper proposes a decision-support system for disaster response and recovery using hybrid meta-heuristics.
112 citations
01 Jan 2010
TL;DR: It is demonstrated that optimal IT security spending, expected firm profits and willingness of firms to cooperate with competitors to improve security are highly dependent on the nature of customer response to adverse events, especially whether customer responseto adverse security events in the competitor increases or decreases firm demand.
Abstract: Traditionally, IT security investment decisions are made in isolation. However, as firms that compete for customers in an industry are closely interlinked, a macro perspective is needed in analyzing these decisions. We utilize the notions of direct- and cross-risk elasticity to describe the customer response to adverse IT security events in the firm and competitor, respectively, thus allowing us to analyze optimal security investment decisions. Examining both symmetric and asymmetric duopoly cases using a continuous-time Markov chain (CTMC) model, we demonstrate that optimal IT security spending, expected firm profits and willingness of firms to cooperate on security improvements are highly dependent on the nature of customer response to adverse events. We also examine the investment problem when security attacks on different firms are correlated.
14 citations
01 Mar 2010-Canadian Journal of Administrative Sciences-revue Canadienne Des Sciences De L Administration
4 citations
Posted Content•
TL;DR: This paper developed a theoretical model that explains how three factors interact to determine the quality of Wikipedia articles, including the diversity in members' knowledge bases, task-related conflicts that occur during the collaborative authoring process, and the different roles members play in Wikipedia.
Abstract: The success of Wikipedia demonstrates that self-organizing production communities can produce high-quality information-based products. Research on Wikipedia has proceeded largely atheoretically, focusing on (1) the diversity in members’ knowledge bases as a determinant of Wikipedia’s content quality, (2) the task-related conflicts that occur during the collaborative authoring process, and (3) the different roles members play in Wikipedia. We develop a theoretical model that explains how these three factors interact to determine the quality of Wikipedia articles. The results from the empirical study of 96 Wikipedia articles suggest that (1) diversity should be encouraged, as the creative abrasion that is generated when cognitively diverse members engage in task-related conflict leads to higher-quality articles, (2) task conflict should be managed, as conflict -- notwithstanding its contribution to creative abrasion -- can negatively affect group output, and (3) groups should maintain a balance of both administrative- and content-oriented members, as both contribute to the collaborative process.
2 citations