Sunghee Lee

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BACKGROUND Low response rates among surgeons can threaten the validity of surveys. Internet technologies may reduce the time, effort, and financial resources needed to conduct surveys. OBJECTIVE We investigated whether using Web-based technology could increase the response rates to an international survey. METHODS We solicited opinions from the 442(More)
To be able to deploy the mobile IPTV service, energy efficiency is an important design consideration due to the limited battery lifetime of mobile devices. Moreover, the Scalable Video Coding (SVC) scheme, which allows for data rate adaptation without re-encoding, should also be considered for supporting a variety of mobile devices. This paper proposes a(More)
BACKGROUND Low response rates among surgeons can threaten the validity of surveys. Internet technologies may reduce the time, effort, and financial resources needed to conduct surveys. OBJECTIVE We investigated whether using Web-based technology could increase the response rates to an international survey. METHODS We solicited opinions from the 442(More)
Currently, there is a lack of tools or techniques which can clearly handle the complexity related to intercomponent communication while developing Android applications. We propose a conceptual model which represents the inter-component communication at a higher abstraction level. We also propose a technique to derive test case from the model. The model can(More)
OBJECTIVES Subjective life expectancy (SLE) has been suggested as a predictor of mortality and mortality-related behaviors. Although critical for culturally diverse societies, these findings do not consider cross-cultural methodological comparability. Culture-specific reporting heterogeneity is a well-known phenomenon introducing biases, and research on(More)
In this paper, a novel caudal fin for actuating a robotic fish is presented. The proposed caudal fin waves in a vertical direction with a specific spatial shape, which is determined by a so-called shape factor. For a specific shape factor, a traveling wave with a vertical phase difference is formed on a caudal fin during fin motion. It will be shown by the(More)
This paper investigates how a pair of signals about the type of the agent can be compared in the classical principal agent model with adverse selection. Signal comparison in this model has two distinctive features that make it dicult to directly apply the results from decision theory: timing of the game and the number of incentive compatibility constraint.(More)