Younggi Kim

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Since the advent of the IoT era, various IoT devices have proliferated, transforming ordinary spaces into smart spaces such as smart home, smart office, and smart building. To provide user-friendly service to people, the majority of previous studies have focused on activity recognition and prediction in singleuser environments such as ambient assisted(More)
A new optical Doppler lidar receiving system which can measure Doppler-shifted incoherent scattering light has been proposed and tested. This system functions in a manner similar to two edge filters and consists of a single etalon, a polarization beam splitter, and mirrors that can guide scattered light into a single etalon with two different angles. These(More)
Linked Data is expected to play an important role for interoperability at the data level for the future internet. One of the main applications of Linked Data might be semantic query processing. The current method of warehousing based query processing requires the crawling of all data periodically and also frequent crawling of data from distributed datasets(More)
The aim of our study was to develop ursolic acid (UA) prodrugs in order to overcome UA's weakness, which has an extremely low bioavailability. UA-medoxomil (NX-201), one of our UA prodrugs, showed an improved bioavailability about 200times better than UA in rodent model. According to in vivo test performed with PANC-1 xenograft SCID mouse model, tumor(More)
The human activity recognition in the IoT environment plays the central role in the ambient assisted living, where the human activities can be represented as a concatenated event stream generated from various smart objects. From the concatenated event stream, each activity should be distinguished separately for the human activity recognition to provide(More)
The Internet of Things (IoT) idea is having a significant impact on our daily lives these days. As the number of IoT devices is growing fast, many researchers have declared that the usage of IoT and the impact of IoT will make people always use IoT devices whatever they do or wherever they are. At the same time, IoT devices at home are receiving a lot of(More)
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