Eun Young Sung

  • Citations Per Year
Learn More
The computer-aided design of suitable control strategies for parallel linkage steering of an experimental automated guided vehicle is described. The microprocessor-based steering control system is modeled, and stability characteristics using proportional control are investigated by means of describing functions. Although the approximation is coarse, the(More)
This paper presents a microeconomic model of inter-regional freight transportation based on careful formulation of the cost structure in trucking firms and market equilibrium, which takes into account the feature of transport service as a bundle of multiple characteristics. We estimate the parameters of the model using the micro-data of inter-regional(More)
Reninoma or juxtaglomerular cell tumor (JCT) of the kidney is a rare but curable cause of severe hypertension. We report a case of reninoma in an 18-year-old woman. Interestingly, she initially presented with dilated cardiomyopathy, without any relevant history or signs of hypertension. Malignant hypertension, one of the cardinal signs of JCT, did not(More)
Three potential sources of comprehensible input for second language acquisition are examined: Modified Input, Interactionally Modified Input and Modified Output. To this end, an attempt is made to closely investigate how each type of linguistic environment facilitates learner comprehension, and subsequently, acquisition. Different theoretical claims as well(More)
  • 1