Deok-Ki Kim

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Context-aware applications in mobile devices use various sensors for inferring context to provide high-quality services. However, mobile devices have limited battery life and sensors consume much power. There have been many approaches for energy efficient sensor usage, but specified sensor operations considering context-aware application give more chance to(More)
In recent years, a large portion of smartphone applications (Apps) has targeted context-aware services. They aim to perceive users’ real-time context like his/her location, actions, or even emotion, and to provide various customized services based on the inferred context. However, context-awareness in mobile environments has some challenging issues due to(More)
Background: This study was undertaken to analyze the distribution and ecological characteristics of invasive alien plant species on Jeju Island, and to provide basic data for their management and control. Results: A field research was conducted at 436 locations on Jeju Island. The field research identified nine species of invasive alien species growing on(More)
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