Seung Han Yoo
Korea University
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Publication
Featured researches published by Seung Han Yoo.
Mathematical Social Sciences | 2013
Seung Han Yoo
This paper explores ‘competitive equilibrium under uncertainty’ by Radner (1968). We provide a simple proof for the existence of a Walrasian equilibrium and characterize the maximal number of markets in the extended Arrow–Debreu economy.
International Journal of Game Theory | 2012
Mukul Majumdar; Seung Han Yoo
This paper analyzes “influence peddling” in a model that portrays interactions involving human capital transfer and collusion-building, in which each government official regulates multiple firms simultaneously. We show that there exists a collusion maximizing equilibrium between a sequence of “qualified” regulators and a firm such that the qualified bureaucrat manipulates regulation rates for two firms by regulating the colluding firm leniently for the maximized sum of their payoffs, but regulating the non-colluding firm stringently for the signaling in order to “compensate” for the lenient regulatory stance taken toward the colluding firm.
Annals of Rehabilitation Medicine | 2013
Seung Han Yoo; Hee Kyu Kwon; Sang Heon Lee; Seok Jun Lee; Kang Wook Ha; Hyeong Suk Yun
A 22-year-old woman visited our clinic with a history of radiofrequency volumetric reduction for bilateral masseter muscles at a local medical clinic. Six days after the radiofrequency procedure, she noticed a facial asymmetry during smiling. Physical examination revealed immobility of the mouth drawing upward and laterally on the left. Routine nerve conduction studies and needle electromyography (EMG) in facial muscles did not suggest electrodiagnostic abnormalities. We assumed that the cause of facial asymmetry could be due to an injury of zygomaticus muscles, however, since defining the muscles through surface anatomy was difficult and it was not possible to identify the muscles with conventional electromyographic methods. Sono-guided needle EMG for zygomaticus muscle revealed spontaneous activities at rest and small amplitude motor unit potentials with reduced recruitment patterns on volition. Sono-guided needle EMG may be an optimal approach in focal facial nerve branch injury for the specific localization of the injury lesion.
Pain Medicine | 2012
Young Ki Hong; Richard Derby; Lee Wolfer; Sang Un Kim; Bong Su Kang; Nack Hwan Kim; Seung Han Yoo; Seok Jun Lee; Sang Heon Lee
Emory Economics | 2014
Sue H. Mialon; Seung Han Yoo
Journal of Economic Behavior and Organization | 2017
Sue H. Mialon; Seung Han Yoo
Archive | 2015
Gea Myoung Lee; Seung Han Yoo
Archive | 2014
Mukul Majumdar; Seung Han Yoo
Journal of Economic Dynamics and Control | 2014
Seung Han Yoo
Archive | 2013
Seung Han Yoo