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BACKGROUND Taking proper protective action upon receiving tornado warnings is critical to reducing casualties. With more warning information sources becoming available, how the number of such information sources affects decision making should be quantitatively investigated. PURPOSE To examine how the number of warning information sources affected(More)
In recent years, there has been a concerted effort for greater job safety in all industries. Personnel protective equipment (PPE) has been developed to help mitigate the risk of injury to humans that might be exposed to hazardous situations. The human head is the most vulnerable to impact as a moderate magnitude can cause serious injury or death. That is(More)
BACKGROUND Tornadoes, with warnings usually issued just minutes before their touchdowns, pose great threats to properties and people's physical and mental health. Few studies have empirically investigated the association of family emergency preparedness planning and observed protective behaviors in the context of tornadoes. PURPOSE The purpose of this(More)
While remote detection of oil spills is well-studied, very little success has been reported in estimation of thickness and aging of oil slicks. In this case study, spectral signatures (350 nm - 2400 nm) of oil samples of 5 different thicknesses on saltwater were measured regularly for 2 months. Changes in spectral behaviors were observed over time. Based on(More)
This paper addresses an ab-initio field investigation around using low-cost portable radars to capture coherent Doppler signatures of wind turbines for structural health monitoring (SHM) applications. A handheld low-cost K-band radar sensor is employed to point at the blades of a turbine, and their Doppler signatures from different angles and distances are(More)
This study examines how multi-level factors affected individuals' relocation decisions after EF4 and EF5 (Enhanced Fujita Tornado Intensity Scale) tornadoes struck the United States in 2013. A telephone survey was conducted with 536 respondents, including oversampled older adults, one year after these two disaster events. Respondents' addresses were used to(More)
Satellite hyperspectral imagery has been widely used in geological and agricultural studies. However, its use for an urban environment is limited due to low spatial resolution. Few methods in the literature attempt to use both spectral and spatial information in hyperspectral imagery. In this paper, a new method of performing spectral correlation and(More)