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Another important lesson that authorities had to learn was that of vulnerability assessment. In other words, it is important that authorities are able to properly assess the damage that hurricanes are likely to produce (Risk Management Solutions, 2005). The authorities' reaction to the damage produced by Katrina has revealed the fact that there were important differences between the modeled and the incurred damages. These differences are determined by several factors. Some of the most important factors that determine such differences in assessments are represented by footprint aspects, data quality, vulnerability, demand surge, damages that are not included in the assessment, replacement cost value, and others.
There are several improvements that have been made regarding authorities' response to natural disasters. Standby recycling contracts represent such an improvement. These contracts mostly refer to recycling activities like market identification and facilitation, but they can be expanded to other activities that are required by disaster management. Such activities include law enforcement, evacuation activities, and others.
In addition to this, the readiness of authorities' response in situations of natural disasters also depends
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GSM Association (2005) the Role of Mobiles in Disasters and Emergencies, Retrieved July 30, 2012, https://docs.google.com/viewer?a=v&q=cache:4iJ5YMea5RsJ:www.enlightenmenteconomics.com/about-diane/assets/disasterreport
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Healey, J (2006) Natural Disasters, Sydney: The Spinney Press