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In this paper we propose the system that measures the thickness of train brakes automatically. The system consists of two modules: image acquisition and analysis module that measures the thickness of brakes with digitized images. In order to measure the thickness of brake shoes, the candidate curves of brake were searched and fitted with 2d curve fitting(More)
This study comprehensively assesses the immediate effects of extreme weather conditions and high ambient air pollution on population health. For Germany and the years 1999 to 2008, we link the universe of all 170 million hospital admissions and all 8 million deaths with weather and pollution data reported at the day-county level. Extreme heat significantly(More)
Impact of the 2008 Global Recession on air quality over the United States: Implications for surface ozone levels from changes in NO x emissions" (2016). NASA Publications. 232. Abstract Satellite and ground observations detected large variability in nitrogen oxides (NO x) during the 2008 economic recession, but the impact of the recession on air quality has(More)
An automated vision system that accurately measures the thickness of a brake shoe for rolling stock is proposed. Images of the brake shoes are captured automatically while rolling stock is passing by an inspection station. Toward this goal, location of the brake shoe in the image has to be determined first because they are not the same in the captured(More)
This study investigates the impact of and behavioral responses to cost sharing in Korea's National Cancer Screening Program, which provides free stomach and breast cancer screenings to those with an income below a certain cutoff. Free cancer screening substantially increases the screening take up rate, yielding more cancer detections. However, the increase(More)
In this paper we propose the method that extracts the semantic keyword from digital images automatically using color and texture features. The image semantic keyword is widely used in research area like image retrieval, categorization, annotation, management. The method consists of two steps: feature extraction and classification module. In order to extract(More)
Long-term fire records are important to understanding the trend of biomass burning and its interactions with air quality and climate at regional and global scales. Traditionally, such data have been compiled from ground surveys or satellite remote sensing. To obtain aerosol information during a fire event to use in analyzing air quality, we propose a new(More)