신정훈 교수

This paper presents the design and implementation procedures of a control scheme for a high-performance induction motor drive for the traction purpose of full-scale electric vehicles to be series produced. For automotive use, the control scheme is designed with the expectation of possible advances in energy efficiency by adopting maximum-torque-per-ampere control and in robustness by employing extensive compensations for variations in magnetic flux, temperature, and voltage. The control scheme i

BACKGROUND: Chronic ankle instability with generalized joint hypermobility (GJH) is considered a contraindication for the modified Broström procedure. The most widely accepted definition of GJH is a Beighton score of ≥4 on a 9-point scale. However, it is not clear whether this criterion can be applied to determine the GJH that would lead to a poor outcome after a modified Broström procedure. Some of the previous studies that report unfavorable outcomes do not specify the tests or cutoff scores u

The use of fossil fuel in the world has been increasing and it generates lots of greenhouse gases. As a result, environmental pollution brought us a serious weather change. In order to reduce the environmental pollution, we should use renewable energy that does not produce any pollution such as wind data. However, wind data can change much in a short time, which is called ramp event. It can make the demand and response imbalance and also cause damages to the wind turbines. Therefore, we should p

Malignant gastrointestinal neuroectodermal tumor (GNET) is a very rare disease entity, especially in the esophagus. The diagnosis of GNET is based on histologic, immunohistochemical, and genetic findings. The choice of treatment is complete resection, and further treatment options can be considered. Herein, we describe a case of successful surgical treatment of a 23-year-old man with recurrent malignant esophageal GNET.

The strategy of epilepsy surgery is to focus on the different characteristics of each individual, considering the extent of real resection, which is based on the focal ictal onset consistent with neuroimaging, especially in the practical point of view of neurosurgery.

As a medical software industry develops in a variety of its fields, the studies on medical software using 3D a virtual model are also being constantly conducted. In orthodontia, one of the fields where the 3D virtual model can be applied, this 3D virtual model is used to simulate treatments of orthodontic patients through several stages of tooth movement, ranging from initial malocclusion to final malocclusion. And set-up model is made into the most ideal treatment objective. This set-up model f

BACKGROUND: The extracorporeal ventricular assist device (e-VAD) system is designed for left ventricular support using a permanent life support console. This study aimed to determine the impact of temporary e-VAD implantation bridging on posttransplant outcomes. METHODS: We reviewed the clinical records of 6 patients with the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) profile 1, awaiting heart transplantation, who were provided with temporary e-VAD from 2018 t

Background: Sutureless aortic valve replacement (S-AVR) is a surgical alternative to conventional aortic valve replacement (C-AVR), recognized for its efficacy and clinical superiority in the treatment of valvular disease. Its use is gradually increasing not only in single-valve procedures but also in multiple valve surgeries. This study aimed to evaluate our experience with the Perceval S-AVR combined with mitral and tricuspid valve surgery such as multiple valve surgery, focusing on the clinic

Stent thrombosis is a major limitation of stent-assisted coiling, which is an effective method for treating wide-necked aneurysms. Although early in-stent thrombosis has been reported, very late stent thrombosis (VLST) (>1 year) has not been reported following implantation of a single self-expandable stent designed for coiling. Herein, the authors present a case of VLST that occurred 14 months after single stent implantation in a large paraclinoid aneurysm with an ultra-wide neck involving the p

Treatment options for children with end-stage heart failure are limited. We report the first case of a successful pediatric heart transplantation bridged with a durable left ventricular assist device in Korea. A 10-month-old female infant with dilated cardiomyopathy and left ventricular non-compaction was listed for heart transplantation. During the waiting period, the patient's status deteriorated. Therefore, we decided to provide support with a durable left ventricular assist device as a bridg